| 1. |
|
|
| 2. |
- Blennborn, M., et al.
(författare)
-
Differences in female and male perception of information and decision-making in single-embryo transfer in in vitro fertilization in Sweden
- 2007
-
Ingår i: Journal of Assisted Reproduction and Genetics. - : Springer Science and Business Media LLC. - 1058-0468 .- 1573-7330. ; 24:8, s. 337-342
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose The aim of this study was to evaluate the information and the factors that contribute to the decision to accept and choose single embryo transfer (SET) in females and males. Materials and methods Fifty-four females and males undergoing SET were interviewed separately using a structured questionnaire. Results The women were significantly more satisfied with the information than the men (odds ratio 3.3), but the decision to accept SET was nevertheless more difficult for women (OR 3.1). Only one-third of both female and males were aware of the increased maternal risks with twin pregnancies. There was a tendency that the women who accepted SET had previous children, shorter duration of infertility, and were younger. Cryopreservation of embryos and a good pregnancy chance were important irrespective of gender. Conclusion The female needs more support to choose SET. The male needs better information and further involvement in decision-making. The females were more aware of the fetal risks, but the awareness of the increased maternal risks with twin pregnancies was low.
|
|
| 3. |
- Borgbo, Tanni, et al.
(författare)
-
Genotyping common FSHR polymorphisms based on competitive amplification of differentially melting amplicons (CADMA).
- 2014
-
Ingår i: Journal of Assisted Reproduction and Genetics. - : Springer Science and Business Media LLC. - 1058-0468 .- 1573-7330. ; 31:11, s. 1427-1436
-
Tidskriftsartikel (refereegranskat)abstract
- To provide an improved platform for simple, reliable, and cost-effective genotyping. Modern fertility treatments are becoming increasingly individualized in an attempt to optimise the follicular response and reproductive outcome, following controlled ovarian stimulation. As the field of pharmacogenetics evolve, genetic biomarkers such as polymorphisms of the follicle stimulating hormone receptor (FSHR) may be included as a predictive tool for individualized fertility treatment. However, the currently available genotyping methods are expensive, time-consuming or have a limited analytical sensitivity. Here, we present a novel version of "competitive amplification of differentially melting amplicons" (CADMA), providing an improved platform for simple, reliable, and cost-effective genotyping. Two CADMA based assays were designed for the two common polymorphisms of the FSHR gene: rs6165 (c.919A > G, p. Thr307Ala, FSHR 307) and rs6166 (c.2039A > G, p. Asn680Ser, FSHR 680). To evaluate the reliability of the new CADMA-based assays, the genotyping results were compared with two conventional PCR based genotyping methods; allele-specific PCR (AS-PCR) and Sanger sequencing. The genotype frequencies for both polymorphisms were 35 % (TT), 42 % (CT), and 23 % (CC), respectively. A 100 % accordance was observed between the CADMA-based genotyping results and sequencing results, whereas 5 discrepancies were observed between the AS-PCR results and the CADMA-based genotyping results. Comparing the CADMA-based assays to (AS-PCR) and Sanger sequencing, the CADMA based assays showed an improved analytical sensitivity and a wider applicability. The new assays provide a reliable, fast and user-friendly genotyping method facilitating a wider implication in clinical practise.
|
|
| 4. |
- Di Nisio, V, et al.
(författare)
-
In vivo and in vitro postovulatory aging: when time works against oocyte quality?
- 2022
-
Ingår i: Journal of assisted reproduction and genetics. - : Springer Science and Business Media LLC. - 1573-7330 .- 1058-0468. ; 39:4, s. 905-918
-
Tidskriftsartikel (refereegranskat)abstract
- In mammalian species an optimal fertilization window during which successful fertilization occurs. In the majority of mammals estrus marks ovulation time and coincident with mating, thereby allowing the synchronized meeting in the fallopian tubes, between freshly ejaculated sperm and freshly ovulated oocytes. Conversely, women do not show natural visual signs of ovulation such that fertilization can occur hours later involving an aged oocyte and freshly ejaculated spermatozoa. During this time, the oocyte undergoes a rapid degradation known as “postovulatory aging” (POA). POA may become particularly important in the human-assisted reproductive technologies, as the fertilization of retrieved mature oocytes can be delayed due to increased laboratory workload or because of unforeseeable circumstances, like the delayed availability of semen samples. This paper is an updated review of the consequences of POA, either in vivo or in vitro, on oocyte quality with particular attention to modifications caused by POA on oocyte nuclear, cytoplasmic, genomic, and epigenetic maturation, and embryo development.
|
|
| 5. |
- Feichtinger, M., et al.
(författare)
-
Allogeneic ovarian transplantation using immunomodulator preimplantation factor (PIF) as monotherapy restored ovarian function in olive baboon
- 2018
-
Ingår i: Journal of Assisted Reproduction and Genetics. - : Springer Science and Business Media LLC. - 1058-0468 .- 1573-7330. ; 35:1, s. 81-89
-
Tidskriftsartikel (refereegranskat)abstract
- Allogeneic ovarian transplantation may be an alternative in the future to oocyte donation in women with premature ovarian failure. The objectives of this study were to (a) evaluate allotransplantation feasibility for restoration of ovarian function and (b) assess efficacy of synthetic preimplantation factor (PIF) monotherapy as sole immune-acceptance regimen. This is an experimental animal study using non-human primates (Papio anubis). Allogeneic orthotopic ovarian tissue transplantation was performed in two female olive baboons. PIF was administered as a monotherapy to prevent immune rejection and achieve transplant maintenance and function. Subjects underwent bilateral oophorectomy followed by cross-transplantation of prepared ovarian cortex. Postoperatively, subjects were monitored for clinical and biochemical signs of graft rejection and return of function. Weekly blood samples were obtained to monitor graft acceptance and endocrine function restoration. Postoperatively, there were no clinical signs of rejection. Laboratory parameters (alanine aminotransferase (ALT), aspartate aminotransferase (AST), blood urea nitrogen (BUN), creatinine) did not indicate organ rejection at any stage of the experiment. Initially, significant loss of follicles was noticed after grafting and serum follicle-stimulating hormone (FSH) and E2 levels were consistent with ovarian failure. Seven months after transplantation, one animal exhibited recurrence of ovarian endocrine function (perineal swelling, E2 rise, FSH decrease, and return of menstruation). Organ rejection after allogeneic ovarian transplantation was prevented using PIF as monotherapy for the first time and no side effects were recorded. The study suggests the clinical feasibility of ovarian allotransplantation to obtain ovarian function.
|
|
| 6. |
|
|
| 7. |
- Feichtinger, Michael, et al.
(författare)
-
Endometriosis and cumulative live birth rate after fresh and frozen IVF cycles with single embryo transfer in young women : no impact beyond reduced ovarian sensitivity-a case control study
- 2019
-
Ingår i: Journal of Assisted Reproduction and Genetics. - : SPRINGER/PLENUM PUBLISHERS. - 1058-0468 .- 1573-7330. ; 36:8, s. 1649-1656
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose To investigate the impact of symptomatic and surgically confirmed endometriosis on ovarian sensitivity index (OSI) and cumulative live-birth rates (LBR) using predominantly single embryo transfer (SET). Methods Cross-sectional case-control study in a University-based ART program. Women with symptomatic and surgically confirmed endometriosis (N = 172), who underwent IVF/ICSI at Karolinska University Hospital were compared to controls without clinically suspected endometriosis (N = 2585). Two thousand seven hundred fifty-seven patients underwent 8236 treatment cycles (4598 fresh and 3638 frozen cycles). Primary outcome measures included Ovarian Sensitivity Index (OSI) estimated as collected oocytes/FSH dose and cumulative LBR/oocyte pickup (OPU). Generalized estimated equation (GEE) model accounting for dependencies between consecutive treatments were applied. Secondary outcomes included number of oocytes, pregnancy rate per OPU and per ET, LBR per ET, and miscarriage rate. Results Patients diagnosed with endometriosis had significantly fewer oocytes collected (8.47 vs. 9.54, p = 0.015) and lower OSI (p = 0.011) than controls. There were no differences in cycle cancelations (p = 0.59) or miscarriages (p = 0.95) between the two groups. Cumulative LBR/OPU did not differ between women with endometriosis and controls (35.6% vs. 34.7%, respectively, p = 0.83). In both groups, more than 60% of women had consecutive FETs after fresh ETs (p = 0.49) with SET in > 70% of cases. The results were similar whether ovarian endometrioma was present or not. Conclusions Our data support that a diagnosis of endometriosis, with or without present endometrioma, does not negatively affect ART cumulative results. The impact of endometriosis was discernible on OSI but not on clinical relevant outcomes including pregnancy and LBR.
|
|
| 8. |
|
|
| 9. |
- Hambiliki, Fredwell, et al.
(författare)
-
A prospective randomized sibling-oocyte study of two media systems for culturing cleavage-stage embryos-impact on fertilization rate
- 2010
-
Ingår i: Journal of Assisted Reproduction and Genetics. - : Springer Science and Business Media LLC. - 1058-0468 .- 1573-7330. ; 28:4, s. 335-341
-
Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: Although several media systems have been developed, data from prospective randomised clinical studies are still lacking. In the present study we compared the effects of 2 different media systems on embryo morphology and development at days 2/3 using sibling oocytes. METHODS: In this prospective sibling-split trial, 1206 oocytes from 110 women were divided via alternate allocation to fertilization and culture in media system A (G-IVF (TM) v5 PLUS/ G-1(TM) v5 PLUS) or for fertilization and culture in media system B (Universal IVF medium/EmbryoAssist (TM)). RESULTS: The use of media system A significantly increased the normal fertilization rate (73.5% versus 67.2%; p = 0.030) and embryo utilization rate (55.5% versus 42.9%; p = 0.001), whereas polyploidy and embryo quality were similar in the two groups. CONCLUSION: The different impacts on fertilization and early embryo development between the two commercially available and commonly used media systems show the importance of evaluation of the efficacy of existing sequential culture media and the need to further improve media for in vitro development of human embryos.
|
|
| 10. |
- Hambiliki, Fredwell, et al.
(författare)
-
Co-localization of NANOG and OCT4 in human pre-implantation embryos and in human embryonic stem cells
- 2012
-
Ingår i: Journal of Assisted Reproduction and Genetics. - : Springer Science and Business Media LLC. - 1058-0468 .- 1573-7330. ; 29:10, s. 1021-1028
-
Tidskriftsartikel (refereegranskat)abstract
- PURPOSE:NANOG and OCT4 are required for the maintenance of pluripotency in embryonic stem cells (ESCs). These proteins are also expressed in the inner cell mass (ICM) of the mouse pre-implantation embryo.METHODS:Immunohistochemistry was used to show the presence of NANOG and OCT4 protein, and in situ hybridization was used to localize NANOG mRNA in human embryos from two-cell to blastocyst stage, and in human ESCs (hESCs).RESULTS:Nanog and Oct4 were co-localized in human embryos from morula and blastocyst stages. NANOG mRNA was detected in a group of cells in the morula, in cells of the ICM of blastocysts, and evenly in hESCs. All non-differentiated hESCs expressed NANOG and OCT4 protein. Pluripotent cells expressing NANOG and Oct4 were eccentrically localized, probably in polarized cells in a human compacted morula, which appears to be different from expression in murine embryos.CONCLUSION:In this study, we demonstrate that whole mount in situ hybridization is amenable to localization of mRNAs in human development, as in other species.
|
|
