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Sökning: L773:2296 2360

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1.
  • Abolhassani, H (författare)
  • Specific Immune Response and Cytokine Production in CD70 Deficiency
  • 2021
  • Ingår i: Frontiers in pediatrics. - : Frontiers Media SA. - 2296-2360. ; 9, s. 615724-
  • Tidskriftsartikel (refereegranskat)abstract
    • Collective clinical and immunologic findings of defects in the CD27–CD70 axis indicate a primary immunodeficiency associated with terminal B-cell development defect and immune dysregulation leading to autoimmunity, uncontrolled viral infection, and lymphoma. Since the molecular mechanism underlying this entity of primary immunodeficiency has been recently described, more insight regarding the function and profile of immunity is required. Therefore, this study aimed to investigate stimulated antibody production, polyclonal vs. virus-specific T-cell response, and cytokine production of a CD70-deficient patient reported previously with early-onset antibody deficiency suffering from chronic viral infections and B-cell lymphoma. The patient and her family members were subjected to clinical evaluation, immunological assays, and functional analyses. The findings of this study indicate an impaired ability of B cells to produce immunoglobulins, and a poor effector function of T cells was also associated with the severity of clinical phenotype. Reduced proportions of cells expressing the memory marker CD45RO, as well as T-bet and Eomes, were observed in CD70-deficient T cells. The proportion of 2B4+ and PD-1+ virus-specific CD8+ T cells was also reduced in the patient. Although the CD70-mutated individuals presented with early-onset clinical manifestations that were well-controlled by using conventional immunological and anticancer chemotherapies, with better prognosis as compared with CD27-deficient patients, targeted treatment toward specific disturbed immune profile may improve the management and even prevent secondary complications.
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2.
  • Adaikina, Alena, et al. (författare)
  • Feasibility study on a longer side-alternating vibration therapy protocol (15 min per session) in children and adolescents with mild cerebral palsy
  • 2023
  • Ingår i: Frontiers in Pediatrics. - : Frontiers Media S.A.. - 2296-2360. ; 11
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: Previous studies on side-alternating vibration therapy (sVT) have usually used a 9 min intervention protocol. We performed a feasibility study aimed at assessing the safety, acceptability, and potential effectiveness of a longer sVT protocol (15 min per session) in children and adolescents with cerebral palsy (CP).Methods: Fifteen participants aged 5.2-17.4 years (median = 12.4 years) with CP GMFCS level II underwent 20 weeks of sVT consisting of 15 min sessions 4 days/week. Participants were assessed at baseline and after the intervention period, including mobility (six-minute walk-test; 6MWT), body composition (whole-body dual-energy x-ray absorptiometry scans), and muscle function (force plate).Results: Adherence level to the 15 min VT protocol was 83% on average. There were no adverse events reported. After 20 weeks, there was some evidence for an increase in the walking distance covered in 6MWT (+43 m; p = 0.0018) and spine bone mineral density (+0.032 g/cm(2); p = 0.012) compared to baseline.Conclusions: The 15 min sVT protocol is feasible and well tolerated. The results also suggest potential benefits of this protocol to mobility and bone health. Randomized controlled trials are needed to reliably ascertain the potential effectiveness of a longer sVT protocol on physical function and body composition in young people with CP.
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3.
  • Ahlqvist-Bjorkroth, Sari, et al. (författare)
  • Improving NICU staff decision-making with parents in medical rounds : a pilot study of reflective group dialogue intervention
  • 2023
  • Ingår i: Frontiers in Pediatrics. - : Frontiers Media S.A.. - 2296-2360. ; 11
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: The communication skills of healthcare professionals play a crucial role in successful shared decision-making with parents in neonatal intensive care. Improving communication skills can be achieved through practice and reflection on personal experiences after authentic interaction events with parents. The process of reflection typically involves three phases: description, reflection, and critical reflection. In this study, our aim was to explore the acceptability of the Reflective Group Dialogue intervention and its effectiveness in supporting the reflective process.Methods: This qualitative pilot study was conducted in the neonatal intensive care unit at Uppsala University Children's Hospital, Sweden. The sample consisted of nine medical rounds with seven families, five neonatologists, seven registered nurses, and five assistant nurses. Purposive sampling was used to collect the data. The intervention comprised four elements: (1) before the intervention, a recorded presentation on shared decision-making was given to the entire unit staff, (2) an observation of a normal medical round discussion with parents, (3) an interview with parents about their experience after the same round, and (4) a reflective discussion with the participating health care professionals after the round. The parent interviews and reflective discussions were audio-recorded and transcribed verbatim. They were analyzed using thematic analysis as a theoretical strategy.Results: Both parents and staff widely accepted the intervention and found it beneficial. We identified four discussions that remained in the descriptive phase of the reflection process, four that reached the reflective phase, and one that reached the critical reflection phase. The descriptive discussions were characterized by using a single perspective to reflect, often based on personal opinions. The reflective discussions included analyzing interaction sequences from both staff and parent perspectives and were primarily based on actual observations of communication during medical rounds. The critical discussion led to a new awareness of current practices concerning parental involvement in decision-making. These discussions also utilized "what-if" thinking to evaluate potential new practices and their pros and cons.Conclusions: The intervention seems promising as it was perceived as beneficial by the recipients and facilitated reflection in most cases. However, to enhance the feasibility of the intervention, some improvements are discussed.
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5.
  • Amesty, MV, et al. (författare)
  • Creation of Tissue-Engineered Urethras for Large Urethral Defect Repair in a Rabbit Experimental Model
  • 2021
  • Ingår i: Frontiers in pediatrics. - : Frontiers Media SA. - 2296-2360. ; 9, s. 691131-
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Tissue engineering is a potential source of urethral substitutes to treat severe urethral defects. Our aim was to create tissue-engineered urethras by harvesting autologous cells obtained by bladder washes and then using these cells to create a neourethra in a chronic large urethral defect in a rabbit model.Methods: A large urethral defect was first created in male New Zealand rabbits by resecting an elliptic defect (70 mm2) in the ventral penile urethra and then letting it settle down as a chronic defect for 5–6 weeks. Urothelial cells were harvested noninvasively by washing the bladder with saline and isolating urothelial cells. Neourethras were created by seeding urothelial cells on a commercially available decellularized intestinal submucosa matrix (Biodesign® Cook-Biotech®). Twenty-two rabbits were divided into three groups. Group-A (n = 2) is a control group (urethral defect unrepaired). Group-B (n = 10) and group-C (n = 10) underwent on-lay urethroplasty, with unseeded matrix (group-B) and urothelial cell-seeded matrix (group-C). Macroscopic appearance, radiology, and histology were assessed.Results: The chronic large urethral defect model was successfully created. Stratified urothelial cultures attached to the matrix were obtained. All group-A rabbits kept the urethral defect size unchanged (70 ± 2.5 mm2). All group-B rabbits presented urethroplasty dehiscence, with a median defect of 61 mm2 (range 34–70). In group-C, five presented complete correction and five almost total correction with fistula, with a median defect of 0.3 mm2 (range 0–12.5), demonstrating a significant better result (p = 7.85 × 10−5). Urethrography showed more fistulas in group-B (10/10, versus 5/10 in group-C) (p = 0.04). No strictures were found in any of the groups. Group-B histology identified the absence of ventral urethra in unrepaired areas, with squamous cell metaplasia in the edges toward the defect. In group-C repaired areas, ventral multilayer urothelium was identified with cells staining for urothelial cell marker cytokeratin-7.Conclusions: The importance of this study is that we used a chronic large urethral defect animal model and clearly found that cell-seeded transplants were superior to nonseeded. In addition, bladder washing was a feasible method for harvesting viable autologous cells in a noninvasive way. There is a place for considering tissue-engineered transplants in the surgical armamentarium for treating complex urethral defects and hypospadias cases.
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6.
  • Aquilano, G, et al. (författare)
  • Case report: Fatal outcome of pyridoxine-dependent epilepsy presenting as respiratory distress followed by a circulatory collapse
  • 2022
  • Ingår i: Frontiers in pediatrics. - : Frontiers Media SA. - 2296-2360. ; 10, s. 940103-
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Pyridoxine-dependent epilepsy is a rare autosomal recessive disease usually associated with neonatal seizures that do not respond to common antiseizure medications but are controlled by pyridoxine administration. Because the symptoms can mimic common neonatal disorders, the diagnosis can be initially missed or delayed. We report a fatal case of a boy who was initially diagnosed with respiratory distress, birth asphyxia, and persistent pulmonary hypertension and whose condition rapidly deteriorated during the first day of life.
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7.
  • Areskoug Sandberg, Elin, et al. (författare)
  • Saliva Cortisol in Girls With Functional Abdominal Pain Disorders : A Randomized Controlled Dance and Yoga Intervention.
  • 2022
  • Ingår i: Frontiers in Pediatrics. - : Frontiers Media S.A.. - 2296-2360. ; 10
  • Tidskriftsartikel (refereegranskat)abstract
    • INTRODUCTION: Functional abdominal pain disorders (FAPDs) are common among girls and has been associated with stress. Cortisol is one of the major stress hormones. Dance and yoga have been shown to reduce abdominal pain among girls with FAPDs.AIM: To investigate the effect of an 8-month intervention with dance and yoga on cortisol levels in saliva among girls with FAPDs.METHODS: A total of 121 girls aged 9-13 years with irritable bowel syndrome (IBS) or functional abdominal pain were included in the study. Participants were randomized into an intervention group and a control group. The intervention group attended a combined dance and yoga session twice a week for 8 months. Saliva samples were collected during 1 day, in the morning and evening, at baseline, and at 4 and 8 months. Subjective pain and stress were assessed as well.RESULTS: No significant effects on saliva cortisol levels between groups were observed after completion of the intervention at 8 months. However, evening cortisol and evening/morning quotient were significantly reduced at 4 months in the intervention group compared to the control group (p = 0.01, p = 0.004). There was no association between cortisol quota and pain or stress.CONCLUSION: Improvements in cortisol levels were seen in the intervention group at 4 months but did not persist until the end of the study. This indicates that dance and yoga could have a stress-reducing effect during the ongoing intervention.
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8.
  • Arve-Butler, Sabine, et al. (författare)
  • Identification of novel autoantigens as potential biomarkers in juvenile idiopathic arthritis associated uveitis
  • 2023
  • Ingår i: Frontiers in Pediatrics. - : Frontiers Media SA. - 2296-2360. ; 10, s. 1-11
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Many children with juvenile idiopathic arthritis (JIA) have autoantibodies, targeting nuclear components (anti-nuclear antibodies, ANA). ANA in JIA is associated with uveitis, an eye inflammation which may cause permanent vision impairment if not detected and treated. However, ANA-testing is neither specific nor sensitive enough to be a clinically reliable predictor of uveitis risk, and the precise autoantigens targeted by ANA in JIA are largely unknown. If identified, specific autoantibodies highly associated with uveitis could be used as biomarkers to facilitate identification of JIA patients at risk.METHODS: Antibodies from six ANA-positive, oligoarticular JIA patients, with and without uveitis, were explored by two large-scale methods: (1) screening against 42,100 peptides on an autoimmunity profiling planar array, and (2) immunoprecipitations from cell lysates with antigen identification by mass spectrometry. Three hundred thirty-five peptide antigens, selected from proteins identified in the large-scale methods and the scientific literature were investigated using a bead-based array in a cohort of 56 patients with oligoarticular- or RF-negative polyarticular JIA, eight of which were having current or previous uveitis.RESULTS: In the planar array, reactivity was detected against 332 peptide antigens. The immunoprecipitations identified reactivity towards 131 proteins. Only two proteins were identified by both methods. In the bead-based array of selected peptide antigens, patients with uveitis had a generally higher autoreactivity, seen as higher median fluorescence intensity (MFI) across all antigens, compared to patients without uveitis. Reactivity towards 17 specific antigens was significantly higher in patients with uveitis compared to patients without uveitis. Hierarchical clustering revealed that patients with uveitis clustered together.CONCLUSION: This study investigated autoantigens in JIA and uveitis, by combining two exploratory methods and confirmation in a targeted array. JIA patients with current or a history of uveitis had significantly higher reactivity towards 17 autoantigens and a generally higher autoreactivity compared to JIA patients without uveitis. Hierarchical clustering suggests that a combination of certain autoantibodies, rather than reactivity towards one specific antigen, is associated with uveitis. Our analysis of autoantibodies associated with uveitis in JIA could be a starting point for identification of prognostic biomarkers useful in JIA clinical care.
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10.
  • Bognar, Zsolt, et al. (författare)
  • Promoting Breastfeeding and Interaction of Pediatric Associations With Providers of Nutritional Products
  • 2020
  • Ingår i: Frontiers in Pediatrics. - : Frontiers Media S.A.. - 2296-2360. ; 8
  • Tidskriftsartikel (refereegranskat)abstract
    • Pediatric associations have been urged not to interact with and not to accept support from commercial providers of breast milk substitutes (BMSs), based on the assumption that such interaction would lead to diminished promotion and support of breastfeeding. The leadership of seven European pediatric learned societies reviewed the issue and share their position and policy conclusions here. We consider breastfeeding as the best way of infant feeding and strongly encourage its active promotion, protection, and support. We support the World Health Organization (WHO) Code of Marketing of BMSs. Infant formula and follow-on formula for older infants should not be advertised to families or the public, to avoid undermining breastfeeding. With consistently restricted marketing of BMSs, families need counseling on infant feeding choices by well-informed pediatricians. Current and trustworthy information is shared through congresses and other medical education directed and supervised by independent pediatric organizations or public bodies. Financial support from commercial organizations for congresses, educational, and scientific activities of pediatric organizations is an acceptable option if scientific, ethical, societal, and legal standards are followed; any influence of commercial organizations on the program is excluded, and transparency is ensured. Public-private research collaborations for improving and evaluating pharmaceuticals, vaccines, medical devices, dietetic products, and other products and services for children are actively encouraged, provided they are guided by the goal of enhancing child health and are performed following established high standards. We support increasing investment of public funding for research aiming at promoting child health, as well as for medical education.
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