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Publication Metadata only Application of HLA molecular mismatch algorithms to predict primary alloimmunity risk and rejection in paediatric kidney transplantation(Springer, 2023) Kim, Jon Jin; Fichtner, Alexander; Copley, Hannah; Krupka, Kai; Pape, Lars; Toenshoff, Burkhard; Kosmoliaptsis, Vasilis; Süsal, Caner; Koç Üniversitesi Organ Nakli İmmünoloji Araştırma Mükemmeliyet Merkezi (TIREX) / Transplant Immunology Research Centre of Excellence (TIREX); School of Medicine; Koç University Hospital[No abstract available]Publication Metadata only Assessment of HLA incompatibility at the molecular compared to antigenic HLA level enables better prediction of graft function deterioration in paediatric kidney transplantation(Springer, 2023) Kim, Jon Jin; Fichtner, Alexander; Copley, Hannah; Susal, Caner; Krupka, Kai; Pape, Lars; Burkhard, Toenshoff; Kosmoliaptsis, Vasilis; Süsal, Caner; Koç Üniversitesi Organ Nakli İmmünoloji Araştırma Mükemmeliyet Merkezi (TIREX) / Transplant Immunology Research Centre of Excellence (TIREX); School of Medicine; Koç University Hospital[No abstract available]Publication Metadata only Development of a low allergenic product for patients with milk allergy and assessment of its specific IgE reactivity(Wiley, 2024) Nemutlu, Emirhan; Kocak, Engin; Yazıcı, Duygu; Süer, Hande; Bülbüloğlu, Cemre Naz; Güzar, Elif; Büyüktiryaki, Ayşe Betül; Saçkesen, Cansın; Koç University Research Center for Translational Medicine (KUTTAM) / Koç Üniversitesi Translasyonel Tıp Araştırma Merkezi (KUTTAM); Graduate School of Health Sciences; School of Medicine;Background: Milk oral immunotherapy is the riskiest and most unpredictable form of oral immunotherapy. We aimed to produce a low allergenic product than conventional once baked-cake/muffin, to develop indirect in-house ELISA to check the tolerance status with milk products and evaluate IgE reactivity of patients' sera via western blotting (WB) and indirect in-house ELISA. Method: A low allergenic product named biscotti-twice baked-cake was developed, and the total protein concentration was determined. The protein content was studied by SDS-PAGE and proteomics. Milk-specific IgE (sIgE) binding assays were performed by WB and indirect in-house ELISA by using patients' sera. Results: Casein band intensity was observed to be lower in the biscotti-twice baked-cake than in the once baked-cake (p = .014). Proteomics analysis and alpha S1-casein measurement showed that the lowest intensity of casein was found in biscotti. The low binding capacity of milk sIgE to biscotti compared with once baked-cake was shown by WB (p = .0012) and by indirect in-house ELISA (p = .0001). In the ROC analysis, the area under the curve (AUC) of the in-house ELISA IgE was comparable with Uni-CAP milk and casein sIgE. The AUC of the in-house ELISA IgE for cake (0.96) and biscotti (1) was slightly better than Uni-CAP milk sIgE (0.94; 0.97) and casein sIgE (0.96; 0.97), respectively. Conclusion: The low allergenicity of the newly developed low allergenic product "biscotti-twice baked-cake" has been demonstrated by in vitro experiments. Biscotti could be a safe treatment option than once baked-cake/muffin in patients who are reactive to once baked-milk products.Publication Metadata only Kidney transplantation in children and adolescents with C3 glomerulopathy or immune complex membranoproliferative glomerulonephritis: a real-world study within the CERTAIN research network(Springer, 2024) Patry, Christian; Webb, Nicholas J. A.; Feisst, Manuel; Krupka, Kai; Becker, Jan; Bald, Martin; Antoniello, Benedetta; Gulhan, Bora; Hogan, Julien; Kanzelmeyer, Nele; Ozkaya, Ozan; Buescher, Anja; Sellier-Leclerc, Anne-Laure; Shenoy, Mohan; Weber, Lutz T.; Fichtner, Alexander; Hoecker, Britta; Meier, Matthias; Toenshoff, Burkhard; Bilge, İlmay; ; School of Medicine;BackgroundComplement 3 glomerulopathy (C3G) and immune complex membranoproliferative glomerulonephritis (IC-MPGN) are ultra-rare chronic kidney diseases with an overall poor prognosis, with approximately 40-50% of patients progressing to kidney failure within 10 years of diagnosis. C3G is characterized by a high rate of disease recurrence in the transplanted kidney. However, there is a lack of published data on clinical outcomes in the pediatric population following transplantation.MethodsIn this multicenter longitudinal cohort study of the Cooperative European Paediatric Renal Transplant Initiative (CERTAIN) registry, we compared the post-transplant outcomes of pediatric patients with C3G (n = 17) or IC-MPGN (n = 3) with a matched case-control group (n = 20).ResultsEleven of 20 children (55%) with C3G or IC-MPGN experienced a recurrence within 5 years post-transplant. Patients with C3G or IC-MPGN had a 5-year graft survival of 61.4%, which was significantly (P = 0.029) lower than the 5-year graft survival of 90% in controls; five patients with C3G or IC-MPGN lost their graft due to recurrence during this observation period. Both the 1-year (20%) and the 5-year (42%) rates of biopsy-proven acute rejection episodes were comparable between patients and controls. Complement-targeted therapy with eculizumab, either as prophylaxis or treatment, did not appear to be effective.ConclusionsThese data in pediatric patients with C3G or IC-MPGN show a high risk of post-transplant disease recurrence (55%) and a significantly lower 5-year graft survival compared to matched controls with other primary kidney diseases. These data underscore the need for post-transplant patients for effective and specific therapies that target the underlying disease mechanism.Graphical abstractA higher resolution version of the Graphical abstract is available as Supplementary informationPublication Metadata only Liver transplantation for Nijmegen breakage syndrome with hepatic malignancy and hepatopulmonary syndrome after bone marrow transplantation: a case report(John Wiley and Sons Inc, 2024) Karasu, Gülsün; Şal, Oğuzhan; Erbey, Mehmet Fatih; Armutlu, Ayşe; Demir, Barış; Akbulut, Akın; Kanmaz, Turan; Alim, Altan; ; School of Medicine; Koç University HospitalBackground: Nijmegen breakage syndrome (NBS) is an autosomal recessive DNA repair disorder that manifests through increased genomic instability, malignancy, and cellular and humoral immunodeficiencies. The prognosis for NBS patients is poor due to their increased susceptibility to fatal infections and lymphoproliferative malignancies. Currently, there is no specific treatment for NBS, though allogeneic hematopoietic stem cell transplantation (HSCT) has been performed and documented as case series to demonstrate the utility of transplantation. Methods: A 14-year-old girl with NBS and haploidentical HSCT from her older brother due to recurrent lung infection was referred for liver transplantation (LT) due to liver cirrhosis, hepatopulmonary syndrome (HPS), and suspicion of liver malignancy. It was decided to perform LT using the living donor who had previously donated for HSCT. Results: Living donor left lobe LT was successfully performed from her brother. The patient experienced no complications in the early postoperative period and was discharged on the seventh postoperative day. Pathological examination of extracted liver has shown “intermediate cell carcinoma” in two foci. After 1 year LT, the patient has had an uneventful course in terms of LT complications and infection, with minimal immunosuppression. Conclusions: NBS patients have an increased prevalence of malignancies, including primary hepatic malignancy, but most are managed medically or with limited resections. Transplantation in these patients can be curative for hepatic malignancy with a favorable safety profile. © 2024 Wiley Periodicals LLC.Publication Metadata only Neurocognitive impairment in patients with ataxia telangiectasia and their unaffected parents: is it similar?(Elsevier Inc., 2024) Uyar, Emel; Usanmaz, Sevil; Kiykim, Ayca; Tufan, Ali Evren; Alibas, Hande; Aydiner, Omer; Somer, Ayper; Ozen, Ahmet; Baris, Safa; Karakoc-Aydiner, Elif; Aktürk, Hacer; ; School of Medicine;Background: Ataxia telangiectasia (AT) is a genetic multisystemic disorder affecting the nervous system. Data on neurocognitive functioning in AT are limited and focused on patients at various stages of disease. Because of the genetic nature of the disorder, parents of patients may also display subtle neurological problems. This study aimed to evaluate neurocognitive functioning in patients with AT and their unaffected parents. Methods: The study included 26 patients with AT and 41 parents among which 13 patients and 18 parents were evaluated with neurocognitive tests. Clinical and radiological data were reviewed retrospectively. Data were analyzed with descriptive statistics. Results: The median ages of patients and parents were 12.5 years (interquartile range [IQR] = 9.5) and 38.0 years (IQR = 12.0), respectively. Median intelligence quotients were 62.0 (IQR = 21.3) and 82.5 (IQR = 16.8), respectively, for patients and parents. Rates of intellectual disability for patients and parents were 100.0% and 83.3%, respectively. Areas of impairment in patients in decreasing order of frequency were motor skills, visual perception/memory, visual-manual coordination, spontaneous/focused and sustained attention (100.0% for each), social judgment, as well as vocabulary and arithmetic skills (75.0% for each). Areas of impairment in unaffected parents in decreasing order of frequency were visualmanual coordination (77.8%), working memory (76.5%), and visual perception and motor skills (66.7% for each). Conclusion: Intellectual disabilities, visual-spatial disabilities, and reduced visual-motor coordination seem to be similar in patients with AT and their parents. These results should be replicated with larger samples from multiple centers and may form putative cognitive endophenotypes for the disorder. (c) 2024 Elsevier Inc. All rights reserved.Publication Metadata only The predictive power of coping strategies of pediatric oncology patients on their quality of life and their attitudes toward diseases(Wiley, 2024) Uysal, Gulzade; Alki, Kubra; Semerci, Remziye; Umaç, Eyşan Hanzade; ; School of Nursing; Graduate School of Health Sciences;Background/objectives Pediatric oncology patients face several physical and psychological challenges that can significantly impact their quality of life (QoL) and attitudes toward their illness. Coping strategies are pivotal in managing the emotional and physical burdens of disease. This study aimed to examine the impact of coping strategies of pediatric oncology patients on their QoL and attitudes towards their illness. Design/methods The descriptive, correlational, and cross-sectional study was conducted with 112 pediatric oncology patients aged 10-18 years. The Sociodemographic Form, Pediatric Cancer Coping Scale (PCCS), Pediatric Quality of Life Inventory (PedsQL), and Child Attitude Towards Illness Scale (CATIS) were used for data collection. Results Significant correlations were identified between cognitive coping, defensive coping, and CATIS (p < .001). The PCCS and subdimensions significantly predicted CATIS (p < .001), accounting for 15.3% of the cognitive and defensive coping variation. However, there was no relationship between PCCS total and subdimension scores on PedsQL (p = .534). The PedsQL and subdimensions significantly predicted CATIS (p < .001) and accounted for 27.2% of the variation in physical health summary score, emotional functioning, psychosocial health summary score, and total PedsQL score. Conclusion The study reveals that cognitive coping strategies positively predict attitudes toward illness, whereas defensive coping strategies have an inverse effect. The study proposes that comprehensive care models in pediatric oncology support effective coping mechanisms and enhance the QoL of those who receive them.Publication Metadata only The quality and content analysis of YouTube videos about chemotherapy for children(Wiley, 2024) Semerci, Remziye; Şimşek, Enes; Orhan, Eda; Erbey, Mehmet Fatih; ; School of Nursing; Graduate School of Health Sciences; School of Medicine;Purpose: This study undertook a systematic examination of YouTube videos about chemotherapy for pediatric patients, with a primary focus on assessing the videos' quality, content, and reliability.Method: The research was conducted by searching YouTube using the keywords "chemotherapy for children" and "chemotherapy for pediatric," employing filters for "worldwide" and "all categories." The top 100 videos, based on popularity, were selected for evaluation according to the power analysis calculation. Two independent experts in pediatric oncology reviewed these videos. Video characteristics were recorded: length, view count, likes, dislikes, view ratio, and video-like ratio. The Video Power Index was calculated to measure video popularity. The modified DISCERN and Global Quality Scale (GQS) assessed the videos for quality and reliability.Results: The 100 videos were analyzed. Official health institutions uploaded 54%, while independent users contributed 46%. Independent user uploads garnered significantly more views than official health institutions (p = .006). The number of likes, view ratio, and Video Power Index of independent users' videos were significantly higher than official health institutions' videos (respectively, p = .007, .007, and .008). On the other hand, the modified DISCERN score and GQS were significantly higher in YouTube videos of official health institutions than in independent users (p < .001). A strong correlation was observed between the modified DISCERN score and GQS (r = .879, p < .001).Conclusion: This study provides valuable insights into the YouTube videos on pediatric chemotherapy, emphasizing the need to improve the quality and reliability of online health information for this vulnerable population.Publication Metadata only The role of antimicrobial polypeptides for the predicting of urinary tract infection: UTILISE study(Springer, 2023) Yıldırım, Zeynep Yuruk; Afonso, Alberto Caldas; Akil, Ipek; Aksu, Bagdagul; Alpay, Harika; Atmis, Bahriye; Aydog, Ozlem; Bakkaloglu, Sevcan; Bayazit, Aysun Karabay; Bayram, Meral Torun; Bulut, Ipek Kaplan; Comak, Elif; Kasap-Demir, Belde; Delebe, Ozlem Cam; Bilge, İlmay; ; School of Medicine;[No abstract available]