SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Kvarnström Niclas) "

Sökning: WFRF:(Kvarnström Niclas)

  • Resultat 1-38 av 38
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Akouri, Randa R., et al. (författare)
  • First live birth after uterus transplantation in the Middle East
  • 2020
  • Ingår i: Middle East Fertility Society Journal. - : Springer Science and Business Media LLC. - 1110-5690 .- 2090-3251. ; 25:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Background The first live birth after uterus transplantation took place in Sweden in 2014. It was the first ever cure for absolute uterine factor infertility. We report the surgery, assisted reproduction, and pregnancy behind the first live birth after uterus transplantation in the Middle East, North Africa, and Turkey (MENAT) region. A 24-year old woman with congenital absence of the uterus underwent transplantation of the uterus donated by her 50-year-old multiparous mother. In vitro fertilization was performed to cryopreserve embryos. Both graft retrieval and transplantation were performed by laparotomy. Donor surgery included isolation of the uterus, together with major uterine arteries and veins on segments of the internal iliac vessels bilaterally, the round ligaments, and the sacrouterine ligaments, as well as with bladder peritoneum. Recipient surgery included preparation of the vaginal vault, end-to-side anastomosis to the external iliac arteries and veins on each side, and then fixation of the uterus. Results One in vitro fertilization cycle prior to transplantation resulted in 11 cryopreserved embryos. Surgical time of the donor was 608 min, and blood loss was 900 mL. Cold ischemia time was 85 min. Recipient surgical time was 363 min, and blood loss was 700 mL. Anastomosis time was 105 min. Hospital stay was 7 days for both patients. Ten months after the transplantation, one previously cryopreserved blastocyst was transferred which resulted in viable pregnancy, which proceeded normally (except for one episode of minor vaginal bleeding in the 1st trimester) until cesarean section at 35 + 1 weeks due to premature contractions and shortened cervix. A healthy girl (Apgar 9-10-10) weighing 2620 g was born in January 2020, and her development has been normal during the first 6 months. Conclusions This is the first report of a healthy live birth after uterus transplantation in the MENAT region. We hope that this will motivate further progress and additional clinical trials in this area in the Middle East Region, where the first uterus transplantation attempt ever, however unsuccessful, was performed already three decades ago.
  •  
2.
  • Ayoubi, Jean Marc, et al. (författare)
  • Case Report: Post-Partum SARS-CoV-2 Infection After the First French Uterus Transplantation
  • 2022
  • Ingår i: Frontiers in Surgery. - : Frontiers Media SA. - 2296-875X. ; 9
  • Tidskriftsartikel (refereegranskat)abstract
    • Absolute uterus factor infertility, whether congenital or acquired, renders the woman unable to carry a child. Although uterus transplantation (UTx) is being increasingly performed as a non-vital procedure to address this unfortunate condition, the immunosuppression required presents risks that are further compounded by pregnancy and during the puerperium period. These vulnerabilities require avoidance of SARS-CoV-2 infection in pregnant UTx recipients especially during the third trimester, as accumulating evidence reveals increased risks of morbidity and mortality. Here we describe a successful UTx case with delivery of a healthy child, but in which both mother and neonate developed asymptomatic SARS-CoV-2 infection seven days after RNA vaccination, on day 35 post-partum. Although the patient was successfully treated with a combination therapy comprised of two monoclonal antibodies, this case highlights the challenges associated with performing UTx in the era of Covid-19. More broadly, the risks of performing non-vital organ transplantation during a pandemic should be discussed among team members and prospective patients, weighing the risks against the benefits in improving the quality of life, which were considerable for our patient who achieved motherhood with the birth of a healthy child.
  •  
3.
  • Ayoubi, J. M., et al. (författare)
  • Evolving clinical challenges in uterus transplantation
  • 2022
  • Ingår i: Reproductive BioMedicine Online. - : Elsevier BV. - 1472-6483. ; 45:5, s. 947-960
  • Forskningsöversikt (refereegranskat)abstract
    • Before the first live birth following uterus transplantation (UTx) in 2014, the 1–2% of women with an absent or non-functional uterus had no hope of childbearing. With 64 cases of UTx and 34 births reported in the scientific literature, this emerging technology has the potential for translation into mainstream clinical practice. However, limitations currently include donor availability, recipient suitability, surgical challenges regarding success and complications, and recipient management after UTx and during pregnancy. This review considers these challenges and ways to overcome them so that UTx could become part of the reproductive specialist's armamentarium when counselling patients with uterine factor infertility.
  •  
4.
  • Ayoubi, J. M., et al. (författare)
  • Laparotomy or minimal invasive surgery in uterus transplantation: a comparison
  • 2019
  • Ingår i: Fertility and Sterility. - : Elsevier BV. - 0015-0282. ; 112:1, s. 11-18
  • Tidskriftsartikel (refereegranskat)abstract
    • Uterus transplantation (UTx) is the first available treatment for absolute uterine factor infertility, a condition due to absence of the uterus or presence of a non-functional uterus. The proof-of-concept of UTx as an infertility treatment for this group of patients occurred in 2014 in Sweden by the first birth after human UTx. That and subsequent cases of the Swedish trial were live-donor UTx procedures with laparotomy of both donor and recipient. Although results of the initial Swedish clinical UTx trial were very favorable in terms of take-home-baby rate, the drawback was the long duration (>10 h) of donor surgeries and associated long recovery periods. There exist three later publications, with uterus procurements from live donors by laparotomy with a range of surgical durations of 5.3 hours to 13 hours. Our collaborative Swedish-French team has initiated efforts to introduce minimal invasive surgery in one trial in Sweden and one in France. The principle of these UTx trials is to use modern concepts of robotic-assisted laparoscopy primarily in the live donor. There also exists a small number of published UTx procedures with donor surgery by partial conventional laparoscopy and one published case with total robotic-assisted laparoscopy procedure. This review discusses open versus minimal invasive surgery in relation to the accumulated knowledge in the field. Moreover, we propose some future directions for the development of this surgery in UTx. © 2019
  •  
5.
  • Brucker, S. Y., et al. (författare)
  • Experiences of a multistep process with medical and psychological interventions for patients with congenital uterine aplasia to achieve motherhood: the Gothenburg-Tubingen collaboration
  • 2019
  • Ingår i: Facts Views and Vision in Obgyn. - 2032-0418. ; 11:2, s. 121-126
  • Tidskriftsartikel (refereegranskat)abstract
    • Congenital uterine aplasia, also known as Mayer-Rokitansky-Kuster-Hauser syndrome (MRKHS) is a condition associated to a non-functional uterus in the presence of functional ovaries. In a setting where surrogacy is illegal (or not accepted) and adoption is the only alternative, neovaginoplasty and subsequent uterus transplantation (UTx) can provide a route to motherhood for women with MRKHS. This review article describes a multistep process by which patients with MRKHS can achieve motherhood with their own biological child. This process involving a careful clinical diagnosis, psychological counselling, assessment of eligibility for neovagina creation and UTx, the surgical treatment, fertility treatment, and long-term follow-up was developed at the Tubingen University Hospital and in close collaboration with Sahlgrenska Academy, University of Gothenburg, Sweden, where the basic experimental and clinical groundwork for UTx was laid and the first-ever UTx procedure was performed.
  •  
6.
  • Brucker, S. Y., et al. (författare)
  • Living-Donor Uterus Transplantation: Pre-, Intra-, and Postoperative Parameters Relevant to Surgical Success, Pregnancy, and Obstetrics with Live Births
  • 2020
  • Ingår i: Journal of Clinical Medicine. - : MDPI AG. - 2077-0383. ; 9:8
  • Tidskriftsartikel (refereegranskat)abstract
    • Uterus transplantation (UTx) can provide a route to motherhood for women with Mayer-Rokitansky-Kuster-Hauser syndrome (MRKHS), a congenital disorder characterized by uterovaginal aplasia, but with functional ovaries. Based on our four successful living-donor transplantations and two resulting births, this analysis presents parameters relevant to standardizing recipient/donor selection, UTx surgery, and postoperative treatment, and their implementation in routine settings. We descriptively analyzed prospectively collected observational data from our four uterus recipients, all with MRKHS, their living donors, and the two newborns born to two recipients, including 1-year postnatal follow-ups. Analysis included only living-donor/recipient pairs with completed donor/recipient surgery. Two recipients, both requiring ovarian restimulation under immunosuppression after missed pregnancy loss in one case and no pregnancy in the other, each delivered a healthy boy by cesarean section. We conclude that parameters crucial to successful transplantation, pregnancy, and childbirth include careful selection of donor/recipient pairs, donor organ quality, meticulous surgical technique, a multidisciplinary team approach, and comprehensive follow-up. Surgery duration and blood vessel selection await further optimization, as do the choice and duration of immunosuppression, which are crucial to timing the first embryo transfer. Data need to be collected in an international registry due to the low prevalence of MRKHS.
  •  
7.
  • Brucker, S. Y., et al. (författare)
  • Selecting living donors for uterus transplantation: lessons learned from two transplantations resulting in menstrual functionality and another attempt, aborted after organ retrieval
  • 2018
  • Ingår i: Archives of Gynecology and Obstetrics. - : Springer Science and Business Media LLC. - 0932-0067 .- 1432-0711. ; 297:3, s. 675-684
  • Tidskriftsartikel (refereegranskat)abstract
    • To contribute to establishing donor selection criteria based on our experience with two successful living-donor human uterus transplantations (UTx) and an aborted attempt. This interventional study included three patients with uterine agenesis, aged 23, 34, and 23 years, scheduled for UTx, and their uterus-donating mothers, aged 46, 61, and 46 years, respectively. Interventions included preoperative investigations, donor surgery, back-table preparation, and recipient surgery. Preoperative imaging, surgical data, histopathology, menstrual pattern, and uterine blood flow were the main outcome measures. In the first case (46-year-old mother/23-year-old daughter), donor/recipient surgery took 12.12/5.95 h. Regular spontaneous menstruations started 6-week post-transplantation, continuing at 24-28-day intervals throughout the 6-month observation period. Repeated follow-up cervical biopsies showed no signs of rejection. In the second case (61-year-old donor), surgery lasted 13.10 h; attempts to flush the retrieved uterus failed due to extreme resistance of the left uterine artery (UA) and inability to perfuse the right UA. Transplantation was aborted to avoid graft vessel thrombosis or insufficient blood flow during potential pregnancy. Histopathology revealed intimal fibrosis and initial sclerosis (right UA), extensive intimal fibrosis (parametric arterial segments), and subtotal arterial stenosis (myometrial vascular network). In the third case (46-year-old mother/23-year-old daughter), donor/recipient surgery took 9.05/4.52 h. Menstruations started 6-week post-transplantation. Repeated cervical biopsies showed no signs of rejection during the initial 12-week follow-up period. Meticulous preoperative evaluation of potential living uterus donors is essential. This may include selective contrast-enhanced UA angiograms and limitation of donor age, at least in donors with risk factors for atherosclerosis.
  •  
8.
  • Brännström, Mats, 1958, et al. (författare)
  • Evolution of surgical steps in robotics-assisted donor surgery for uterus transplantation: results of the eight cases in the Swedish trial.
  • 2020
  • Ingår i: Fertility and sterility. - : Elsevier BV. - 1556-5653 .- 0015-0282. ; 114:5, s. 1097-1107
  • Tidskriftsartikel (refereegranskat)abstract
    • To perform a stepwise development of the surgical method for robotics-assisted laparoscopy in donor hysterectomy for uterus transplantation (UTx), a unique treatment for absolute uterine-factor infertility.Prospective observational study.University hospital.Eight donors, aged 38-62 years, underwent surgery for retrieval of the uterus and vasculature.Robotics-assisted laparoscopy was performed in donors for 6-7 h with video recording. Conversion to laparotomy was performed for last parts of retrieval surgery.Description, evaluation, and timing of 12 specific surgical steps, as well as surgical outcomes and complications.There was a progression during the course of eight surgeries. In the initial two cases, seven and six items were completed with robotics compared with all 12 items in the last three procedures. The passive surgical time decreased from ∼20% in the first four cases to ∼8% in the last three procedures. The estimated median (range) blood loss, total surgical time, and length of hospital stay were, respectively, 125 mL (100-600), 11.25 h (10-13), and 5.5 days (5-6). Two reversible complications occurred: One patient acquired pressure alopecia, and one developed pyelonephritis.The study demonstrates a clear evolution of a strategy toward fully robotic donor surgery in UTx. This is likely to become the main approach in donor surgery of live UTx donors.NCT02987023.
  •  
9.
  • Brännström, Mats, 1958, et al. (författare)
  • Global results of human uterus transplantation and strategies for pre-transplantation screening of donors
  • 2019
  • Ingår i: Fertility and Sterility. - : Elsevier BV. - 0015-0282. ; 112:1, s. 3-10
  • Tidskriftsartikel (refereegranskat)abstract
    • Absolute uterine factor infertility, due to absence or non-function of the uterus, is one of the few major subgroups of infertility that has remained without any treatment. Uterus transplantation has now been proposed as treatment for this type of infertility. The first attempt of human uterus transplantation was in 2000. This was a live donor case, but due to suboptimal surgical solutions it resulted in a necrotic uterus being removed after 99 days. This first human case, although a failure, inspired several research groups around the globe to initiate animal-based studies to investigate uterus transplantation in relation to surgery, immunosuppression, rejection and pregnancy outcome. The research was carried out in several animal species and advanced the field substantially. In 2011, the second uterus transplantation attempt was performed, and this involved a deceased donor procedure. Although the case was surgically successful, with resumed menstruations, clinical pregnancy with live birth could not be achieved. The first clinical trial of uterus transplantation was initiated in Sweden in 2013 and involved nine live donor procedures. The world's first live birth was reported from that trial in September 2014 and this was followed by two more births within that trial in November 2014. Births after uterus transplantation has since been reported from Sweden and other centers in Europe, North America, Latin America, and Asia. Thirty human uterus transplantation procedures have been reported in the scientific literature so far but by our personal knowledge the double number of procedures have been performed. The published cases will be reviewed in detail, and we will also describe the pregnancies of the live births that have been published. A small number of graft failures have occurred. These may in part be linked to suboptimal selection of donors, specifically concerning the quality of the uterine arteries. Consequently, we will also address the issue of strategies for pre-surgical screening of donors. © 2019
  •  
10.
  • Brännström, Mats, 1958, et al. (författare)
  • Live birth after robotic-assisted live donor uterus transplantation.
  • 2020
  • Ingår i: Acta obstetricia et gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 99:9, s. 1222-1229
  • Tidskriftsartikel (refereegranskat)abstract
    • The proof-of-concept of uterus transplantation, as a treatment for absolute uterine factor infertility, came with the first live birth after uterus transplantation, which took place in Sweden in 2014. This was after a live donor procedure, with laparotomy in both donor and recipient. In our second, ongoing trial we introduced a robotic-assisted laparoscopic surgery of the donor to develop minimal invasive surgery for this procedure. Here, we report the surgery and pregnancy behind the first live birth from that trial.In the present study, within a prospective observational study, a 62-year-old mother was the uterus donor and her 33-year-old daughter with uterine absence as part of the Mayer-Rokitansky-Küster-Hauser syndrome, was the recipient. Donor surgery was mainly done by robotic-assisted laparoscopy, involving dissections of the utero-vaginal fossa, arteries and ureters. The last part of surgery was by laparotomy. Recipient laparotomy included vascular anastomoses to the external iliac vessels. Data relating to in vitro fertilization, surgery, follow up, obstetrics and postnatal growth are presented.Three in vitro fertilization cycles prior to transplantation gave 12 cryopreserved embryos. The surgical time of the donor in the robot was 360minutes, according to protocol. The durations for robotic surgery for dissections of the utero-vaginal fossa, arteries and ureters were 30, 160 and 84minutes, respectively. The remainder of donor surgery was by laparotomy. Recipient surgery included preparations of the vaginal vault, three end-to-side anastomoses (one arterial, two venous) on each side to the external iliacs and fixation of the uterus. Ten months after transplantation, one blastocyst was transferred and resulted in pregnancy, which proceeded uneventfully until elective cesarean section in week 36+1 . A healthy boy (Apgar 9-10-10) was delivered. Follow up of child has been uneventful for 12months.This is the first report of a live birth after use of robotic-assisted laparoscopy in uterus transplantation and is thereby a proof-of-concept of use of minimal invasive surgery in this new type of transplantation.
  •  
11.
  • Brännström, Mats, 1958, et al. (författare)
  • Livebirth after uterus transplantation.
  • 2015
  • Ingår i: Lancet. - 1474-547X. ; 385:9968, s. 607-616
  • Tidskriftsartikel (refereegranskat)abstract
    • Uterus transplantation is the first available treatment for absolute uterine infertility, which is caused by absence of the uterus or the presence of a non-functional uterus. Eleven human uterus transplantation attempts have been done worldwide but no livebirth has yet been reported.
  •  
12.
  • Brännström, Mats, 1958, et al. (författare)
  • Novel approaches in uterus transplantation
  • 2020
  • Ingår i: Current Opinion in Organ Transplantation. - : Ovid Technologies (Wolters Kluwer Health). - 1087-2418 .- 1531-7013. ; 25:6, s. 584-593
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose of review Uterus transplantation (UTx) is the first existing infertility treatment for women with no uterus and for women with a present nonfunctional uterus, which is unable to carry a pregnancy. This type of transplantation is a novel addition within the field of vascularized composite allografts and is the first ephemeral kind of transplantation, with the graft intended for only a restricted number of years, until the desired numbers of children have been born and with subsequent graft removal. The proof-of-concept of UTx, as an infertility treatment for women with uterine factor infertility, came with the report of the first live birth after UTx, occurring in Sweden in 2014. This UTx live birth has been followed by around 30 births, taking place in four continents. Despite the initial clinical success, UTx should still be regarded as an experimental procedure, at a developmental phase. The clinical UTx activities at several centers around the globe take place within scientific clinical trials and aim to advance UTx further. This review describes certain developmental areas around UTx. These relate to surgery, donor selection, assisted reproduction, and inclusion of new recipient groups. Recent findings Successful UTx procedures, with live births, have been reported both after live and deceased donor transplantation. There exist developments in the areas of robotic surgery for live donor hysterectomy, of alternate vascular connections to the graft, modifications of inclusion criteria/investigations of donors, assisted reproduction in conjunction with UTx, as well as discussions concerning expanding the pool of eligible recipients. Uterus transplantation has repeatedly proven to be a feasible infertility treatment for women with absolute uterine factor infertility. Ongoing studies aim to increase safety and efficiency of the procedure as well as to better define suitable donors and recipients.
  •  
13.
  • Brännström, Mats, 1958, et al. (författare)
  • One uterus bridging three generations: first live birth after mother-to-daughter uterus transplantation
  • 2016
  • Ingår i: Fertility and Sterility. - : Elsevier BV. - 0015-0282 .- 1556-5653. ; 106:2, s. 261-266
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To determine whether a uterus from the mother of a woman with absolute uterine factor infertility can be transplanted to daughter and carry a pregnancy with delivery of a healthy child. Patient(s): Twenty eight-year-old woman with uterine agenesis, her male partner, and her 50-year-old mother. Intervention(s): In vitro fertilization with embryo cryopreservation before live donor uterus transplantation (UTx). Induction immunosuppression. Embryo transfer 12 months after UTx, pregnancy controls, delivery, and hysterectomy. Main Outcome Measure(s): Results of IVF-ET, parameters of pregnancy/birth, and surgical data of transplantation/cesarean section/hysterectomy. Result(s): Two IVF cycles before UTx resulted in 10 cryopreserved embryos. Donor surgery included hysterectomy with vascular pedicles of uterine vessels and proximal vessels up to and including parts of internal iliacs. Recipient surgery was by bilateral vascular connections to external iliacs, vaginal-vaginal anastomosis, and uterine fixation. Pregnancy occurred at the first single ET, and the pregnancy proceeded uneventfully until gestational week 34, when the patient developed cholestasis with intense pruritus. Cesarean section was performed at 34+6, with delivery of a healthy boy (weight 2,335 g). Hysterectomy was performed 3.5 months after delivery. The weight of the healthy child at 12 months was 9.3 kg. Grandmother (uterus donor) and mother are in good health 3 years after UTx. Conclusion(s): This is the first report of a live birth after mother-to-daughter UTx, and it also represents the second birth ever after human UTx. (C) 2016 by American Society for Reproductive Medicine.
  •  
14.
  • Brännström, Mats, 1958, et al. (författare)
  • Outcome of Recipient Surgery and 6-Month Follow-Up of the Swedish Live Donor Robotic Uterus Transplantation Trial.
  • 2020
  • Ingår i: Journal of clinical medicine. - : MDPI AG. - 2077-0383. ; 9:8
  • Tidskriftsartikel (refereegranskat)abstract
    • Uterus transplantation has proved to be a feasible treatment for uterine factor infertility. Herein, we report on recipient outcome in the robotic uterus transplantation trial of 2017-2019. The eight recipients had congenital uterine aplasia. The donors were six mothers, one sister, and one family friend. Donor surgery was by robotic-assisted laparoscopy. Recipient surgery was by laparotomy and vascular anastomoses to the external iliacs. The duration (median (ranges)) of recipient surgery, blood loss, measured (left/right) uterine artery blood flow after reperfusion, and length of hospital stay were 5.15 h (4.5-6.6), 300 mL (150-600), 43.5 mL/min (20-125)/37.5 mL/min (10-98), and 6 days (5-9), respectively. Postoperative uterine perfusion evaluated by color Doppler showed open anastomoses but restricted blood distribution in two cases. Repeated cervical biopsies in these two cases initially showed ischemia and, later, necrosis. Endometrial growth was not seen, and hysterectomy was later performed, with pathology showing partly viable myometrium and fibrosis but necrosis towards the cavity. The other six patients acquired regular menstrual cyclicity. Surgery was performed in two patients to correct vaginal stenosis. Reversible rejection episodes were seen in two patients. In conclusion, the rate of viable uterine grafts during the initial 6-months of the present study (75%) leaves room for improvement in the inclusion/exclusion criteria of donors and in surgical techniques. Initial low blood flow may indicate subsequent graft failure.
  •  
15.
  • Brännström, Mats, 1958, et al. (författare)
  • Reproductive, obstetric, and long-term health outcome after uterus transplantation: results of the first clinical trial
  • 2022
  • Ingår i: Fertility and Sterility. - : Elsevier BV. - 0015-0282 .- 1556-5653. ; 118:3, s. 576-585
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To evaluate reproductive, obstetric, and long-term health of the first completed study of uterus transplantation (UTx). Design: Prospective. Setting: University hospital. Patient(s): Nine live donor UTx procedures were conducted and seven were successful. Donors, recipients, and children born were observed. Intervention(s): In vitro fertilization was performed with embryo transfer (ET) of day 2 or day 5 embryos in natural cycles. Pregnancies and growth trajectory of the children born were observed. Health-related quality of life, psychosocial outcome, and medical health of donors and recipients were evaluated by questionnaires. Main Outcome Measure(s): The results of in vitro fertilization, pregnancies, growth of children, and long-term health of patients were reported. Result(s): Six women delivered nine infants, with three women giving birth twice (cumulative birth rates of 86% and 67% in surgically successful and performed transplants, respectively). The overall clinical pregnancy rate (CPR) and live birth rate (LBR) per ET were 32.6% and 19.6%, respectively. For day 2 embryos, the CPR and LBR per ET were 12.5% and 8.6%, respectively. For day 5 embryos, the CPR and LBR per ET were 81.8% and 45.4%, respectively. Fetal growth and blood flow were normal in all pregnancies. Time of delivery (median in full pregnancy weeks + days [ranges]) by cesarean section and weight deviations was 35 + 3 (31 + 6 to 38 + 0) and -1% (-13% to 23%), respectively. Three women developed preeclampsia and four neonates acquired respiratory distress syndrome. All children were healthy and followed a normal growth trajectory. Measures of long-term health in both donors and recipients were noted to be favorable. When UTx resulted in a birth, scores for anxiety, depression, and relationship satisfaction were reassuring for both the donors and recipients. Conclusion(s): The results of this first complete UTx trial show that this is an effective infertility treatment, resulting in births of healthy children and associated with only minor psychological and medical long-term effects for donors and recipients. Clinical Trial Registration Number: NCT02987023.
  •  
16.
  • Brännström, Mats, 1958, et al. (författare)
  • The first clinical uterus transplantation trial: a six-month report.
  • 2014
  • Ingår i: Fertility and sterility. - : Elsevier BV. - 1556-5653 .- 0015-0282. ; 101:5, s. 1228-1236
  • Tidskriftsartikel (refereegranskat)abstract
    • To report the 6-month results of the first clinical uterus transplantation (UTx) trial. This type of transplantation may become a treatment of absolute uterine-factor infertility (AUFI).
  •  
17.
  • Castellón, L. A. R., et al. (författare)
  • The history behind successful uterine transplantation in humans
  • 2017
  • Ingår i: Jornal Brasileiro de Reproducao Assistida. - : GN1 Genesis Network. - 1517-5693. ; 21:2, s. 126-134
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper aimed to describe the basic aspects of uterine transplant (UTx) research in humans, including preliminary experiences in rodents and domestic species. Studies in rats, domestic species, and non-human primates validated and optimized the UTx procedure in terms of its surgical aspects, immunosuppression, rejection diagnosis, peculiarities of pregnancy in immunosuppressed patients, and patients with special uterine conditions. In animal species, the first live birth from UTx was achieved in a syngeneic mouse model in 2003. Twenty-five UTx procedures have been performed in humans. The first two cases were unsuccessful, but established the need for rigorous research to improve success rates. As a result of a controlled clinical study under a strictly designed research protocol, nine subsequent UTx procedures have resulted in six healthy live births, the first of them in 2014. Further failed UTx procedures have been performed in China, Czech Republic, Brazil, Germany, and the United States, most of which using living donors. Albeit still an experimental procedure in, UTx is the first potential alternative for the treatment of absolute uterine factor infertility (AUFI). © 2017, Sociedade Brasileira de Reproducao Assistida. All rights reserved.
  •  
18.
  • Dahm-Kähler, Pernilla, 1964, et al. (författare)
  • Indications and surgical technique for hysterectomy after uterus transplantation
  • 2020
  • Ingår i: Uterus Transplantation. Brännström, M. (red.). - Cham : Springer. - 9783319941622 ; , s. 209-214
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • A uterine allograft should at some stage be removed, even after proved functionality, in terms of harbouring a pregnancy with live birth. Thus, uterus transplantation is the first type of allogeneic organ transplantation that is ephemeral, with the graft not intended for life-long use. There are several situations when removal of an allogenic transplant is indicated, including early post-operative graft failure, severe and therapy-resistant rejection of the graft, severe non-uterine-specific complications/side-effects of immunosuppression, severe somatic illness, cases when the uterus has delivered the desired number of babies, and failure to successful pregnancy, usually after large number of implantation failures/miscarriages. Any hysterectomy should be performed by a gynaecologist together with a transplant surgeon that has participated in uterus transplantation surgery, so that the understanding of the specific and altered anatomy is secured. © Springer Nature Switzerland AG 2020.
  •  
19.
  • Dahm-Kähler, Pernilla, 1964, et al. (författare)
  • Robotic live donor hysterectomy
  • 2021
  • Ingår i: Current Opinion in Organ Transplantation. - : Ovid Technologies (Wolters Kluwer Health). - 1087-2418 .- 1531-7013. ; 26:6, s. 640-645
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose of review Donor hysterectomy for live donor uterus transplantation was from the start performed by laparotomy, but minimal invasive surgery has entered the scene. In particular robotic-assisted laparoscopy is used since robotics is advantageous in the complex donor hysterectomy surgery in narrow space. This review covers the development and benefits of robotics and the published robotic donor hysterectomy experiences. Recent findings Robotic donor hysterectomy publications are scarce with eight cases in Sweden, five in USA, and one each in China and Spain. Robotics have been performed for either the entire donor hysterectomy or with conversion to laparotomy for the last steps of the surgical procedure. The total operative times are in line with open surgery, although a decrease is expected in the future. The estimated blood loss and hospital stays are less than at open surgery. The complication panorama includes hydronephrosis, ureteric fistula and pressure alopecia. Live births with healthy babies have been reported. In uterus transplantation, robotic live donor hysterectomy has proven to be feasible, safe and associated with successful live births. The robotic donor hysterectomy is a low-volume procedure and an international registry to gather collective information is crucial for further evaluation and development.
  •  
20.
  • Dahm-Kähler, Pernilla, 1964, et al. (författare)
  • Uterus transplantation for fertility preservation in patients with gynecologic cancer
  • 2021
  • Ingår i: International Journal of Gynecological Cancer. - : BMJ. - 1048-891X .- 1525-1438. ; 31:3, s. 371-378
  • Tidskriftsartikel (refereegranskat)abstract
    • Cervical and endometrial cancer may impact women interested in future fertility in approximately 5-25% of cases. The recommended treatment for patients with early stage disease is hysterectomy and/or radiation leading to infertility. This is referred to as absolute uterine factor infertility. Such infertility was considered untreatable until 2014, when the first child was born after uterus transplantation. Thereafter, multiple births have been reported, mainly from women with Mayer-Rokitansky-Küster-Hauser syndrome, with congenital uterine absence, although also from a patient with iatrogenic uterine factor infertility caused by radical hysterectomy secondary to an early stage cervical cancer 7 years before uterus transplantation. A live birth after uterus transplantation may be considered promising for many who may not otherwise have this option. Uterus transplantation is a complex process including careful patient selection in both recipients and donors, in vitro fertilization, and complex surgery in the organ procurement procedure including harvesting the vessel pedicles with the thin-walled veins. Thereafter, the transplantation surgery with anastomosis to ensure optimal blood inflow and outflow of the transplanted organ. Knowledge regarding immunosuppression and pregnancy is essential. Lastly there is the hysterectomy component as the uterus must be removed. Multidisciplinary teams working closely are essential to achieve successful uterus transplantation and, ultimately, delivery of a healthy child. Both the living and deceased donor concept may be considered and we address both the advantages and disadvantages. This review summarizes the animal research thus far published on uterus transplantation, the suggested recipient selections including former gynecologic cancer patients, the living and deceased donor uterus transplantation concepts with reported results, and updated fertility outcomes. © IGCS and ESGO 2021. Re-use permitted under CC BY. Published by BMJ.
  •  
21.
  • Deans, R., et al. (författare)
  • The first Australian uterus transplantation procedure: A result of a long-term Australian-Swedish research collaboration
  • 2023
  • Ingår i: Australian & New Zealand Journal of Obstetrics & Gynaecology. - 0004-8666.
  • Tidskriftsartikel (refereegranskat)abstract
    • AimsThe aim is to report the results of Australia's first uterus transplantation (UTx). MethodsFollowing long-standing collaboration between the Swedish and Australian teams, Human Research Ethics approval was obtained to perform six UTx procedures in a collaborative multi-site research study (Western Sydney Local District Health 2019/ETH13038), including Royal Hospital for Women, Prince of Wales Hospital, and Westmead Hospital in New Souh Wales. Surgeries were approved in both the live donor (LD) and deceased donor models in collaboration with the inaugural Swedish UTx team. ResultsThis is the first UTx procedure to occur in Australia, involving a mother donating her uterus to her daughter. The total operative time for the donor was 9 h 54 min. Concurrently, recipient surgery was synchronised to minimise graft ischaemic time, and the total operative time for the recipient was 6 h 12 min. Surgery was by laparotomy in the LD and recipient. The total warm ischaemic time of the graft was 1 h 53 min, and the cold ischaemic time was 2 h 17 min (total ischaemic time 4 h 10 min). The patient's first menstruation occurred 33 days after the UTx procedure. ConclusionTwenty-five years of Swedish and Australian collaboration has led to Australia's first successfully performed UTx surgery at The Royal Hospital for Women, Sydney, Australia.
  •  
22.
  • Elebring, Erik, 1990, et al. (författare)
  • Cold-perfusion decellularization of whole-organ porcine pancreas supports human fetal pancreatic cell attachment and expression of endocrine and exocrine markers
  • 2017
  • Ingår i: Journal of Tissue Engineering. - : SAGE Publications. - 2041-7314. ; 8
  • Tidskriftsartikel (refereegranskat)abstract
    • Despite progress in the field of decellularization and recellularization, the outcome for pancreas has not been adequate. This might be due to the challenging dual nature of pancreas with both endocrine and exocrine tissues. We aimed to develop a novel and efficient cold-perfusion method for decellularization of porcine pancreas and recellularize acellular scaffolds with human fetal pancreatic stem cells. Decellularization of whole porcine pancreas at 4 degrees C with sodium deoxycholate, Triton X-100 and DNase efficiently removed cellular material, while preserving the extracellular matrix structure. Furthermore, recellularization of acellular pieces with human fetal pancreatic stem cells for 14 days showed attached and proliferating cells. Both endocrine (C-peptide and PDX1) and exocrine (glucagon and -amylase) markers were expressed in recellularized tissues. Thus, cold-perfusion can successfully decellularize porcine pancreas, which when recellularized with human fetal pancreatic stem cells shows relevant endocrine and exocrine phenotypes. Decellularized pancreas is a promising biomaterial and might translate to clinical relevance for treatment of diabetes.
  •  
23.
  • Falkenberg, Mårten, 1959, et al. (författare)
  • Radiopaque Fiducials Guiding Laparoscopic Resection of Liver Tumors
  • 2022
  • Ingår i: Surgical Laparoscopy, Endoscopy and Percutaneous Techniques. - 1530-4515. ; 32:1, s. 140-144
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Minimal invasive laparoscopic resection of liver tumors is less traumatic compared with open surgical resection and may be a better option for many patients. However, localization of intrahepatic tumors remains a challenge. Availability of hybrid operating rooms, equipped for high performance radiologic imaging, allows for new methods of surgical navigation. Methods: Twelve patients planned for laparoscopic resection of liver tumors were included. Before resection started, tumors were marked with radiopaque fiducials. Four fiducials were positioned with ultrasound within 1 cm of the tumor. Tumor and fiducials were localized with contrast enhanced cone beam computed tomography. Fluoroscopy with an overlay of cone beam computed tomography markings was projected side-by-side on the same screen as the laparoscopic view to visualize tumor location. The fiducials were eventually removed. Laparoscopic ultrasound, the standard method of localizing a tumor, was also used. The benefits of the 2 visualization methods were estimated by the operator. Procedure times, radiation doses and resection margins were recorded. Results: Fluoroscopy with radiopaque fiducials provided valuable information, complementing the laparoscopic ultrasound, particularly during the early phase of resection. In the later phase, mobilization of the tumor-containing liver segment caused significant displacement of the fluoroscopic overlay. The technique evolved during course of the study, with decreasing procedure times and radiation doses. Radical resection was achieved for all patients. Conclusions: Radiopaque fiducials and fluoroscopy can complement laparoscopic ultrasound for guiding resection of liver tumors. Combining radiologic and optical imaging in a hybrid operating suit may facilitate development of augmented reality techniques for surgical navigation. Copyright © 2021 The Author(s). Published byWolters Kluwer Health, Inc.
  •  
24.
  •  
25.
  • Fehrman-Ekholm, Ingela, 1947, et al. (författare)
  • Post-nephrectomy development of renal function in living kidney donors: a cross-sectional retrospective study
  • 2011
  • Ingår i: Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association. - : Oxford University Press (OUP). - 1460-2385 .- 0931-0509. ; 26:7, s. 2377-2381
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Increasing numbers of living donor kidney transplantations calls for better knowledge about long-term donor outcomes and risks. METHODS: To explore long-term kidney donor outcomes and risks, we conducted a cross sectional retrospective study. To this end, we analysed renal function using measured glomerular filtration rate (mGFR) and estimated glomerular filtration rate (eGFR) as well as microalbuminuria, blood pressure (BP), body mass index, haemoglobin, albumin and parathyroid hormone in kidney donors nephrectomized between 1965 and 2005. RESULTS: A total number of 573 kidney donors agreed to undergo medical follow-up examinations. The mean age (standard deviation) at donation was 47 (11) years and the mean time since donation was 14 (9) years. Both mean mGFR [68 (15) mL/min/1.73m(2) body surface; P = 0.028] and mean eGFR [71 (16) mL/min/1.73m(2) body surface; P < 0.001], based on modified diet renal dysfunction and iohexol or Cr-EDTA clearance, respectively, were found to decrease with age and to increase with time since donation. Special multivariable regression analyses reveal that for 30-year old donors, the median eGFR typically increases during the first 17 years, then remains constant for ∼8 years and slowly declines thereafter. For 50-year-old donors, the median eGFR is expected to increase during the first 15 years or so and then to enter a phase of slight progressive decline. In total, 23% (126/546) of the donors were on antihypertensive medication. An additional 22% (117/543) of the donors were found to suffer from hitherto undiagnosed hypertension (BP >140/90 mm Hg). CONCLUSION: Renal function of the remaining kidney in living donors is expected to improve for many years but will show signs of slight deterioration in the longer run.
  •  
26.
  • Johannesson, Liza, 1976, et al. (författare)
  • The uterus transplantation trial: 1-year outcome.
  • 2015
  • Ingår i: Fertility and sterility. - : Elsevier BV. - 1556-5653 .- 0015-0282. ; 103:1, s. 199-204
  • Tidskriftsartikel (refereegranskat)abstract
    • To report the 12-month outcome of seven patients with viable uteri after uterus transplantation (UTx).
  •  
27.
  • Järvholm, Stina, et al. (författare)
  • Donors' health-related quality-of-life and psychosocial outcomes 3years after uterus donation for transplantation
  • 2019
  • Ingår i: Human reproduction (Oxford, England). - : Oxford University Press (OUP). - 1460-2350 .- 0268-1161. ; 34:7, s. 1270-1277
  • Tidskriftsartikel (refereegranskat)abstract
    • STUDY QUESTION: What are the effects on donors' health-related quality-of-life, mood and marital relationship 2 and 3years after uterus donation for transplantation? SUMMARY ANSWER: Overall, uterus donors were relatively stable regarding health-related quality-of-life, mood and marital relationship after donation, although slight negative deviations existed in a few participants, presumably associated with older age or with continued non-pregnancy outcomes from the donation. WHAT IS KNOWN ALREADY: Uterus transplantation has recently proved to be a successful treatment for absolute uterine factor infertility. However, there is no previous research on health-related quality-of-life and long-term psychosocial outcomes of donors. The present cohort of nine donors represents the cases of the first clinical uterus transplantation study, which took place in Sweden. Long-term follow-up studies of health-related quality-of-life in other living donors, such as of kidneys and livers, suggest that donors have above average quality-of-life prior to donation and that this typically continues during the years after donation. In our previous 1-year report on psychosocial and quality-of-life outcomes, we found that two out of nine donors showed decreased health-related quality-of-life at 6 and 12months post donation. STUDY DESIGN, SIZE, DURATION: This complete, prospective cohort study included the nine donors of the first uterus transplantation trial, which took place in Sweden in 2013. Donors were assessed by questionnaires 2 and 3years after surgery for uterus donation. PARTICIPANTS/MATERIALS, SETTING, METHODS: The nine donors (aged 39 to 62years) were all a close relative or friend of their recipient. Physical and mental component summaries of health-related quality-of-life were measured with the SF-36 questionnaire. Mood was assessed by the Hospital Anxiety Depression Scale. Relationship with partner was measured with the Dyadic Adjustment Scale. MAIN RESULTS AND THE ROLE OF CHANCE: The physical and mental components of the SF-36 were generally above the mean scores for a normative population. At Year 3, the two oldest donors (above 60years of age at surgery) showed clear negative deviations in the physical component. The mental component summary of SF-36 was essentially unaltered overall at Year 2, but slight negative deviations were seen in three donors at Year 3. These three donors were among the four with unsuccessful pregnancy outcomes for the recipients following donation. Scores of anxiety and depression (mood) were within normative values for all donors at Year 2, but one donor presented with increased (worse) values for both variables at Year 3. Two donors showed signs of relationship distress during the follow-up period and another had divorced during this period. LIMITATIONS, REASONS FOR CAUTION: The small sample size is a limitation. WIDER IMPLICATIONS OF THE FINDINGS: The present study suggests that live uterus donation does not in general negatively influence health-related quality-of-life, mood and relationship in a 2 to 3-year perspective follow-up. Longer follow-up studies, including larger number of donors and in different cultural settings, are needed. STUDY FUNDING/COMPETING INTEREST(S): The Jane and Dan Olsson Foundation for Science; the Wallenberg Foundation; an ALF grant from the Swedish state under an agreement between the government and the county councils; the Swedish Research Council; a Ferring Pharmaceuticals scholarship in memory of Robert Edwards; and the Iris Jonzén-Sandbloms and Greta Jonzéns Foundation. The authors have no competing interests. TRIAL REGISTRATION NUMBER: NCT01844362. © The Author(s) 2019. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For permissions, please e-mail: journals.permission@oup.com.
  •  
28.
  • Järvholm, Stina, et al. (författare)
  • Long-term health-related quality-of-life and psychosocial outcomes after uterus transplantation: a 5-year follow-up of donors and recipients
  • 2024
  • Ingår i: Human reproduction (Oxford, England). - 1460-2350. ; 39:2, s. 374-381
  • Tidskriftsartikel (refereegranskat)abstract
    • What are the outcomes regarding health-related quality-of-life, mood, and marital relationship of recipients and donors 5years after uterus transplantation (UTx) and uterus donation?Both recipients and donors generally demonstrated long-term stability regarding psychosocial outcomes but with negative deviations associated with unsuccessful outcomes.UTx is the first infertility treatment for women with absolute uterine factor infertility. The procedure can be performed with either a uterus donation from a live donor (LD), typically a close relative, or from a deceased, multi-organ donor. There are many potential stressful events over several years after UTx both for recipients and for LDs and these events may have impacts on quality-of-life and mental well-being.This, prospective observational cohort study includes the nine recipients and LDs of the first human UTx trial. They were assessed in 2017-2018 by questionnaires 5years after UTx.The nine recipients (ages 32-43years) and their respective LDs (ages 44-67years) were either related (n=8) or friends (n=1). Eight recipients had congenital uterine absence and one was hysterectomized due to cervical cancer. For two recipients, UTx resulted in early graft failures, while six of the other seven recipients gave birth to a total of eight babies over the following 5years. Physical and mental component summaries of health-related quality-of-life were measured with the SF-36 questionnaire. Mood was assessed by the Hospital Anxiety and Depression Scale. Relationship with partner was measured with the Dyadic Adjustment Scale. Comparisons were made between the values after 5years and the values before uterus donation/transplantation.Five years after primary UTx, the majority of recipients scored above the predicted value of the general population on quality-of-life, except for two women, one of whom had a viable graft but no live birth and one recipient who was strained by quality-of-life changes, possibly related to parenthood transitions. Regarding mood, only one value (anxiety) was above the threshold for further clinical assessment. Recipients showed declining satisfaction with their marital relationships, but all reported scores above the 'at risk for divorce' threshold at the time of the final assessment in our study. The LDs were all found to be stable and above the predicted value of the general population regarding mental components of quality-of-life. Three LDs showed declined physical components, possibly related to older age. Only one LD reported a value in mood (anxiety) that would need further assessment. The marital satisfaction of LDs remained stable and unchanged compared to baseline values. Notably, the two recipients with early graft failures, and their related LDs, regained their mental well-being during the first years after graft failure and remained stable after 5years.The restricted sample size and the single-centre study-design are limitations of this study. Additionally the study was limited to LD UTx, as opposed to deceased donor UTx.Our study shows that both LDs and recipients had acceptable or favourable quality-of-life outcomes, including mood assessment, at the 5-year follow-up mark, and that failure to achieve a live birth negatively affected these modalities both for LDs and recipients. Moreover, an important finding was that LDs and recipients are not reacting with depression after hysterectomy, which is common after hysterectomy in the general population.Funding was provided by the Jane and Dan Olsson Foundation for Science, Knut and Alice Wallenberg Foundation, Handlanden Hjalmar Svensson Foundation, Swedish Governmental ALF Grant, and Swedish Research Council. There are no conflicts of interest to disclose.
  •  
29.
  • Järvholm, Stina, et al. (författare)
  • Psychosocial outcomes of uterine transplant recipients and partners up to 3 years after transplantation: results from the Swedish trial
  • 2020
  • Ingår i: Fertility and Sterility. - : Elsevier BV. - 0015-0282. ; 114:2, s. 407-415
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: To assess the psychosocial outcomes of recipients and their partners 2 and 3 years after entering this first clinical uterus transplantation study. Design: Prospective observational study. Setting: University hospital. Patient(s): Nine women with absolute uterine factor infertility and their male partners participated. Intervention(s): Psychosocial evaluations using questionnaires focusing on health-related quality-of-life, mood, relationship, and fertility-related quality-of-life were conducted at 2- and 3-year follow-up after transplantation. Main Outcome Measure(s): Scores were obtained on the validated questionnaires 36-Item Short Form Survey (SF-36), Hospital Anxiety and Depression Scale, Dyadic Adjustment Scale, and Fertility Quality of life measuring health-related quality-of-life, mood, relationship, and infertility-associated life quality, respectively. Result(s): There was a reversible decrease (at year 2) in the physical component of SF-36 concerning recipients, but not in partners. Negative deviations in the mental component of SF-36 were seen in four recipients, and in two of their partners at year 3, possibly related to the fact that live birth had not been achieved yet among three of these women. Childlessness also seemed to be related to reporting elevated anxiety scores. Most recipients and partners stated high satisfaction with marital relationship both at inclusion and at follow-up. Conclusion(s): The results of the present study show that even if the baseline psychosocial characteristics of the women to undergo transplantation and their partners were stable and equal or better compared with norm populations, graft failure and failure to achieve parenthood will pose psychological strains on couples in the period up to 3 years after transplantation. Psychological counseling should be offered past 3 years for recipients and their partners. ((C) 2020 by American Society for Reproductive Medicine.)
  •  
30.
  • Karlsson, Camilla, 1977, et al. (författare)
  • Hysterectomy after uterus transplantation and detailed analyses of graft failures
  • 2022
  • Ingår i: Acta Obstetricia Et Gynecologica Scandinavica. - : Wiley. - 0001-6349 .- 1600-0412. ; 101:3, s. 355-363
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction The first live birth after uterus transplantation occurred in Sweden in 2014. Uterus transplantation has repeatedly, and at many centers worldwide, proven to be a feasible treatment for absolute uterine factor infertility. Hysterectomy in live donors and transplantation are well described in numerous reports. However, there are no reports of hysterectomy in the recipient after uterus transplantation, which will occur at either graft failure, after childbirth, or after numerous failed pregnancy attempts. We present the first report of hysterectomy in recipients after uterus transplantation with detailed analyses of findings in conjunction with graft failures. Material and Methods An analysis of recipient hysterectomies (n = 10), performed in 2012-2020, was conducted. Data from the international uterus transplantation registry (ISUTx registry) were extracted, and medical records were systematically reviewed, to collect and compile characteristics of recipients and donors, as well as pre-, per-, and postoperative data, including clinical course of graft failures. Results Hysterectomy in recipients was performed in conjunction with cesarean section (n = 3), 3-6 months after cesarean section (n = 3), or after failed pregnancy attempts (n = 1) or graft failure (n = 3). The durations of anesthesia (2 h 36 min to 7 h 35 min) and hysterectomy surgery (1 h 42 min to 5 h 52 min) ranged widely, with long perioperative interruptions for insertion of ureteral catheters in two cases. Adhesions to the uterus were abundant, the majority being mild. Three uteri that subsequently showed graft failure (hysterectomy at 1, 3, and 8 months post transplantation) showed histological signs of ischemia in biopsies taken 1-week post-transplant and early signs of central hypoperfusion by Doppler ultrasound. In these graft failure explants, there were no epithelial linings in the uterine cavity or in the cervix. The inner uterine wall was severely ischemic and/or necrotic, whereas outer parts were partly viable. There were signs of moderate atherosclerosis of uterine arteries but no rejection. Mild postoperative complications were frequent (6/10), with one supravaginal hematoma requiring surgical drainage. Conclusions Hysterectomy after uterus transplantation is a complex and time-consuming procedure, and perioperative ureteral catheters may be helpful. Histopathology of early cervical biopsies showing ischemic signs may indicate subsequent irreversible damage, leading to graft failure.
  •  
31.
  •  
32.
  • Kuna, Vijay Kumar, 1987, et al. (författare)
  • Isolation and Decellularization of a Whole Porcine Pancreas
  • 2018
  • Ingår i: Jove-Journal of Visualized Experiments. - : MyJove Corporation. - 1940-087X. ; :140
  • Tidskriftsartikel (refereegranskat)abstract
    • Tissue engineering of the whole pancreas can improve current treatments for diabetes mellitus. The ultimate goal is to tissue engineer pancreas from an allogeneic or xenogeneic source with human cells. A demonstration of methods for the efficient dissection, decellularization, and recellularization of porcine pancreas might benefit the field. Akin to human pancreases, porcine pancreases have a special anatomical arrangement with three lobes (splenic, duodenal, and connection) rounded by the duodenum and small intestine. The duodenal lobe of the pancreas connects to the duodenum by several small blood vessels. Tissue engineering of the pancreas is complicated because of its exocrine and endocrine nature. In this paper, we show a detailed protocol to dissect the whole porcine pancreas and decellularize it with detergents while saving its structure and some extracellular matrix components. To achieve complete perfusion, the aorta is chosen as inlet and the portal vein as outlet. The other blood vessels (hepatic artery, splenic vein, splenic artery, mesenteric artery and vein tree) and bile duct are ligated. To prevent the formation of thrombus, the pig is heparinized and, immediately after dissection, the organ is flushed with cold heparin. To inhibit the action of exocrine enzymes, the pancreas decellularization is set at 4 degrees C. The decellularization is performed by perfusion of Triton X-100, sodium deoxycholate, and deoxyribonuclease, with an intermittent and final extensive washing. With a successful decellularization, the pancreas appears white, and a histological evaluation with hematoxylin and eosin shows an absence of nuclei with a preserved extracellular matrix structure. Thus, the proposed method can be used to successfully dissect and decellularize whole porcine pancreas.
  •  
33.
  • Kvarnström, Niclas, et al. (författare)
  • Back-table preparation and flushing of the uterus
  • 2019
  • Ingår i: Uterus Transplantation. Brännström, M. (red.). - Cham : Springer. - 9783319941622 ; , s. 135-138
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • A critical part of the uterus transplantation procedure, both in live donor and in deceased donor uterus transplantation, is the technique used and the decisions taken during flushing and evaluation during back-table preparation. This chapter provides details on preparation of the back-table as well as on the procedures to provide cold ischemia and to prepare the uterine graft for transplantation. © Springer Nature Switzerland AG 2020.
  •  
34.
  • Kvarnström, Niclas, et al. (författare)
  • Live donors of the initial observational study of uterus transplantation-Psychological and medical follow up until 1 year after surgery in the 9 cases.
  • 2017
  • Ingår i: Transplantation. - 1534-6080. ; 101:3, s. 664-670
  • Tidskriftsartikel (refereegranskat)abstract
    • The first prospective observational study of uterus transplantation was initiated in 2013 with live donation to 9 women with absolute uterine factor infertility. We explored the medical complications and psychosocial wellbeing of the donors during the first postoperative year.Complications were registered and graded according to the Clavien-Dindo (C-D) classification. Symptoms related to the surgery were registered. Data on length of hospital stay, sick leave, socioeconomic parameters and life events were obtained. Psychological evaluations (PGWB, DAS, HADS, SF-36) questionnaires focusing on quality-of-life, mood, and relationship, were conducted at inclusion and at 3, 6 and 12 months after uterus donation.One major surgical complication (C-D IIIb) occurred. A ureteric-vaginal fistula developed 2 weeks after uterus procurement. The fistula was surgically repaired. Two self-reported and transient complications (C-D I) were noted (nocturia, meralgia paresthetica). Hospital stays of all donors were 6 days and median sick leave was 56 days (range 14-132). At inclusion, median scores exceeded the normative values of the Swedish population in PGWB and DAS. Anxiety (HADS-A) was detected preoperatively in 1 donor. Two donors exceeded 10-point declines in SF-36 summary scores and increased their HADS scores by 6 points during the observation period. All donors returned to their predonation levels of physical health.The results support that it is feasible to retrieve a uterus safely from a live donor. Further studies are needed to better evaluate the method.
  •  
35.
  • Kvarnström, Niclas (författare)
  • Living donor transplantation -outcome and risk
  • 2017
  • Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
    • Live organ donors undergo extensive surgery to provide an organ that can be lifesaving or improve the health and quality of life for the recipient. The thesis seeks important knowledge that may be used to further reduce the donor risk for the live kidney donor as well as for an entirely new group of living donors, the uterus donor. The general aims were to investigate the outcome for the living kidney and uterus donor in both organ specific measurements and quality of life in the recovery after donation, as well as to investigate if there are markers indicating elevated risk for the donor. Living kidney donors at the Department of Transplantation Surgery at the Sahlgrenska Academy, Sahlgrenska University Hospital and the live uterus donors at the Department of Obstetrics and Gynaecology at the Sahlgrenska Academy, Sahlgrenska University Hospital, were recruited. The study types used herein included a crosssectional study on long-term kidney function, analysis of internal quality register data and prospective studies on both living kidney and uterus donors. Both objective and quantified subjective data (Patient-Reported Outcome) were used for statistical analysis. After an initial decrease, followed by the removal of one kidney at donation, the kidney function increased over time after donation for years while later on it decreased with donor age. The number of arteries did not seem to affect the initial increasing capacity of the remaining kidney. The kidney donor was typically recovered both physically and mentally after three months following donation and socioeconomic factors may have influenced the recovery. The entirely new donor group, living uterus donors, returned to their previous physical health and well-being after the donation. In conclusion, implementation of the current guidelines on living donor evaluation and care provides safe selection and minimize the donor risk although psychosocial and socioeconomic factors may influence the recovery.
  •  
36.
  • Leonhardt, Henrik, 1963, et al. (författare)
  • Imaging evaluation of uterine arteries in potential living donors for uterus transplantation: a comparative study of MRA, CTA, and DSA.
  • 2022
  • Ingår i: European Radiology. - : Springer Science and Business Media LLC. - 0938-7994 .- 1432-1084. ; 32, s. 2360-2371
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim: To evaluate uterine arteries (UA) of potential living donors for uterus transplantation (UTx) by comparison of CT angiography (CTA), digital subtraction angiography (DSA), and MR angiography (MRA) with care taken to minimize radiation doses. M&M: Prospective donors for a clinical UTx trial were included. CTA, DSA, and MRA measurements in three predefined segments of the UAs were evaluated. Radiation doses were estimated and 1-year graft survival was recorded. Results: Twelve potential donors (age 37-62years) were investigated. There was no difference in visualized average UA lumen diameter when comparing CTA (mean 2.0mm, SD 0.4), DSA (mean 2.1mm, SD 0.6), and MRA (mean 2.0mm, SD 0.3). MRA was not able to fully evaluate 10 (43%) out of 23 UA that proved to be patent on DSA. One UA was not identified by any of the modalities, and three MRA-absent UAs were identified by both CTA and DSA. The estimated mean effective dose was lower for DSA (5.1mSv, SD 2.8) than CTA (7.1mSv, SD 2.0), but not significantly (p value=0.06). Three potential donors were excluded due to UA pathology and one due to adenomyosis. Eight donors underwent hysterectomy, with 1-year graft survival in six women. Conclution: MRI including MRA should be the initial modality to examine potential UTx donors to acquire valuable details of uterine anatomy, and if UAs are fully visualized, there is no need for further angiographic methods with radiation. If UAs are not visualized by MRA, CTA may be performed and in selective cases with addition of the invasive modality DSA. Key points: • For uterine transplantation, pelvic MRI with MRA provides information of the uterine structure and of the diameters of uterine arteries in living donors. • Failure of MRA to demonstrate uterine arteries could be followed by CTA which will visualize the uterine arteries in a majority of cases. If MRA and additional CTA provide inconclusive results, the uterine arteries should be further evaluated by DSA. • Information of CTA can be used in the angio-system for DSA settings to minimize the radiation and contrast media doses.
  •  
37.
  • Menjivar, Ana, et al. (författare)
  • Psychosocial risk factors for impaired health-related quality of life in living kidney donors: results from the ELIPSY prospective study
  • 2020
  • Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 10
  • Tidskriftsartikel (refereegranskat)abstract
    • © 2020, The Author(s). Living kidney donors’ follow-up is usually focused on the assessment of the surgical and medical outcomes. Whilst the psychosocial follow-up is advocated in literature. It is still not entirely clear which exact psychosocial factors are related to a poor psychosocial outcome of donors. The aim of our study is to prospectively assess the donors’ psychosocial risks factors to impaired health-related quality of life at 1-year post-donation and link their psychosocial profile before donation with their respective outcomes. The influence of the recipient’s medical outcomes on their donor’s psychosocial outcome was also examined. Sixty donors completed a battery of standardized psychometric instruments (quality of life, mental health, coping strategies, personality, socio-economic status), and ad hoc items regarding the donation process (e.g., motivations for donation, decision-making, risk assessment, and donor-recipient relationship). Donors’ 1-year psychosocial follow-up was favorable and comparable with the general population. So far, cluster-analysis identified a subgroup of donors (28%) with a post-donation reduction of their health-related quality of life. This subgroup expressed comparatively to the rest, the need for more pre-donation information regarding surgery risks, and elevated fear of losing the recipient and commitment to stop their suffering.
  •  
38.
  • Olausson, Michael, 1956, et al. (författare)
  • Surgical technique for vascular anastomosis of the uterine graft
  • 2019
  • Ingår i: Uterus Transplantation. Brännström, M. (red.). - Cham : Springer. - 9783319941622 ; , s. 139-145
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • The objective of this chapter is to describe the surgical technique for the vascular anastomoses in uterus transplantation (UTx) and some of the complications that may occur. Solid organ transplantation is to a large part vascular surgery, based on techniques described during the early 1900. Alexis Carrel (1907) developed many of the organ transplantation modalities still used until this day, an achievement that resulted in the Nobel Prize in Physiology or Medicine in 1912. The surgical technique includes choosing a relevant site for the placement of the donor organ. This will largely determine how one will design the anastomoses and what vessel of the recipient to use. © Springer Nature Switzerland AG 2020.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-38 av 38

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy