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van Schie R, Coolen E, van Tuijl A, van der Velden J, Thoonen B, Scherpbier-de Haan N. Intraprofessional boundary crossing in acute paediatric care: A rich journey for general practice and paediatric residents. Med Educ 2024. [PMID: 38741165 DOI: 10.1111/medu.15423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND Achieving optimal collaboration between general practitioners and hospital-based critical care doctors is vital yet challenging, necessitating targeted collaborative training during residency. Despite apparent benefits, implementing intraprofessional learning faces constraints. Understanding its occurrence is crucial for engaging and educating residents. Considering boundaries' learning potential, we developed and evaluated an educational programme for general practitioner (GP) and paediatric (P) residents in paediatric emergency care based on Akkerman's Boundary Crossing Theory. The study investigated how intraprofessional learning mechanisms occurred and what learning conditions facilitated or impeded learning of GP and P residents, aiming to optimise educational programme design for intraprofessional collaboration. METHODS We developed an educational programme with three activities: joint medical assessments of paediatric patients in each other's context, mutually mini-Clinical Evaluation Exercises (mini-CEXs) about intraprofessional collaboration skills and educational meetings about collaborative care. We performed a qualitative study with a constructivist approach to explore experiences of the programme. We conducted focus group interviews and analysed mini-CEXs, utilising Boundary Crossing theory for template analysis. RESULTS Ten GP and eight P residents participated in our study. Learning mechanisms of identification and coordination dominated the joint medical assessments. Mini-CEXs stimulated reflection. Educational meetings with supervisors about intraprofessional barriers initiated transformation. Facilitated learning conditions were bidirectional crossing, enthusiastic supervisors, residents being familiar with each other, clear mini-CEX design and authentic paediatric cases. Unclear mutual expectations during joint medical assessments impeded learning of residents. CONCLUSIONS Working in each other's context triggers learning mechanisms of identification, coordination and reflection, forming the basis for intraprofessional learning in paediatric emergency care for GP and P residents. For development of new collaboration practices, supervisors are necessary to translate reflection into transformation. Mutual responsibilities and expectations should be made more explicit to create a safer intraprofessional learning environment. Our findings extend to other medical training contexts, leveraging boundaries for learning.
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Affiliation(s)
- Rosalin van Schie
- Department of Primary and Community Care, Radboud University Medical Center, Nijmegen, Netherlands
| | - Ester Coolen
- Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, Netherlands
| | - Anne van Tuijl
- Department of Primary and Community Care, Radboud University Medical Center, Nijmegen, Netherlands
| | | | - Bart Thoonen
- Department of Primary and Community Care, Radboud University Medical Center, Nijmegen, Netherlands
| | - Nynke Scherpbier-de Haan
- Department of General Practice and Elderly Care, University Medical Centre Groningen, Groningen, Netherlands
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van der Coelen S, van der Velden J, Nadesapillai S, Braat D, Peek R, Fleischer K. Navigating fertility dilemmas across the lifespan in girls with Turner syndrome-a scoping review. Hum Reprod Update 2024:dmae005. [PMID: 38452347 DOI: 10.1093/humupd/dmae005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/17/2024] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND Girls with Turner syndrome (TS) lack a partial or complete sex chromosome, which causes an accelerated decline of their ovarian reserve. Girls have to deal with several dilemmas related to their fertility, while only a limited number of them are referred to a fertility specialist and counselled about options of family planning on time. OBJECTIVE AND RATIONALE This scoping review provides an update of the literature on fertility in girls with TS throughout their lifespan and aims to propose a clinical practice guideline on fertility in TS. SEARCH METHODS Databases of PubMed, Embase, and Web of science were searched using the following key terms: Turner syndrome, fertility, puberty, pregnancy, sex-hormones, karyotype, fertility preservation, assisted reproductive techniques, and counselling, alongside relevant subject headings and synonymous terms. English language articles published since 2007 were critically reviewed. Pregnancies after using donated oocytes and data about girls with TS with Y-chromosomal content were excluded. OUTCOMES This search identified 1269 studies of which 120 were extracted for the review. The prevalence of natural conception ranged from 15% to 48% in women with 45,X/46,XX, 1% to 3% in women with 45,X, and 4% to 9% in women with other TS karyotypes. When assessing a girl's fertility potential, it was crucial to determine the karyotype in two cell lines, because hidden mosaicism may exist. In addition to karyotype, assessment of anti-Müllerian hormone (AMH) played a significant role in estimating ovarian function. Girls with AMH above the detection limit were most likely to experience spontaneous thelarche, menarche, and ongoing ovarian function during the reproductive lifespan. Fertility preservation became more routine practice: vitrification of oocytes was reported in 58 girls with TS and a median of five oocytes were preserved per stimulation. Ovarian tissue cryopreservation has demonstrated the presence of follicles in approximately 30% of girls with TS, mostly in girls with mosaic-TS, spontaneous puberty, and AMH above the detection limit. Although girls and their parents appreciated receiving counselling on fertility in TS, only one in ten girls with TS received specialized counselling. Unfamiliarity with fertility preservation techniques or uncertainties regarding the eligibility of a girl for fertility preservation constituted barriers for healthcare professionals when discussing fertility with girls with TS. WIDER IMPLICATIONS There currently is a high demand for fertility preservation techniques in girls with TS. A reliable prognostic model to determine which girls with TS might benefit from fertility preservation is lacking. Only a minority of these girls received comprehensive fertility counselling on the full spectrum of fertility, including uncertainties of fertility preservation, pregnancy risks, and alternatives, such as adoption. Fertility preservation could be a viable option for girls with TS. However, the question remains whether enough oocytes can be obtained for a realistic prospect of a live birth. It is important that girls and parents are empowered with the necessary information to make a well-informed decision.
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Affiliation(s)
- Sanne van der Coelen
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Janielle van der Velden
- Department of Paediatrics, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Sapthami Nadesapillai
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Didi Braat
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ronald Peek
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Kathrin Fleischer
- Department of Reproductive Medicine, Nij Geertgen Center for Fertility, Elsendorp, The Netherlands
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Nadesapillai S, van der Velden J, van der Coelen S, Schleedoorn M, Sedney A, Spath M, Schurink M, Oerlemans A, IntHout J, Beerendonk I, Braat D, Peek R, Fleischer K. TurnerFertility trial: fertility preservation in young girls with Turner syndrome by freezing ovarian cortex tissue-a prospective intervention study. Fertil Steril 2023; 120:1048-1060. [PMID: 37549836 DOI: 10.1016/j.fertnstert.2023.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/26/2023] [Accepted: 08/01/2023] [Indexed: 08/09/2023]
Abstract
OBJECTIVE To evaluate which girls with Turner syndrome (TS) could benefit from fertility preservation by ovarian tissue cryopreservation on the basis of karyotype, puberty status, and hormonal data. DESIGN Prospective intervention study; participants were included between 2018 and 2020. SETTING Tertiary hospital in the Netherlands. PATIENTS In total, 106 girls with TS aged between 2 and 18 years were included. Girls with minor X chromosome deletions, Y chromosomal content, active infections, or contraindications for surgery were excluded. INTERVENTION A laparoscopic unilateral ovariectomy was performed to obtain ovarian cortical tissue for cryopreservation. One tissue fragment per participant was used to determine the number of follicles per ovary by serial sectioning and staining. Chromosome analysis was performed on lymphocytes and buccal cells. A blood sample was taken before the ovariectomy for hormonal analysis. MAIN OUTCOME MEASURES The presence of follicles in ovarian cortex tissue from girls with TS in relation to karyotype, puberty status, and hormonal data. RESULTS A unilateral ovariectomy was performed on 93 girls with TS. Complications after surgery occurred in 5 girls, including luxation of psychological symptoms in 2 girls. In 13 (14%) girls, a 46,XX cell line was found in buccal cells that was absent in lymphocytes. Follicles were observed in 30 (32%) of the 93 girls and were found mainly in girls with a 46,XX cell line in lymphocytes or buccal cells (Phi coefficient = 0.55). Spontaneous onset of puberty (Phi coefficient = 0.59), antimüllerian hormone (AMH; point-biserial correlation [r] = 0.82), inhibin B (r = 0.67), and follicle-stimulating hormone (r = -0.46) levels were also correlated strongly with the presence of follicles. Furthermore, AMH levels had a significant correlation with the number of follicles per ovary (r = 0.66). CONCLUSION Favorable predictive markers for the presence of follicles included either a 46,XX cell line, spontaneous onset of puberty, or a combination of measurable AMH and normal follicle-stimulating hormone levels. Karyotyping of two peripheral cell lines in girls with TS is recommended to reveal hidden mosaicisms. Ovarian tissue cryopreservation should be offered with caution in a research setting to those with a sufficient ovarian reserve, considering the significant loss of follicles after ovarian tissue cryopreservation and autotransplantation. Physicians should pay attention to the mental health of the girls during the whole process. CLINICAL TRIAL REGISTRATION NUMBER Trial registration number: NCT03381300- Preservation of Ovarian Cortex Tissue in Girls With Turner Syndrome - Full Text View - ClinicalTrials.gov. Registered on: December 21, 2017. First patient recruited on January 1, 2018.
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Affiliation(s)
- Sapthami Nadesapillai
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands.
| | - Janielle van der Velden
- Department of Pediatrics, Amalia's Children's Hospital, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Sanne van der Coelen
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Myra Schleedoorn
- Emergency Department, County Hospital Lohr am Main, Am Sommerberg, Lohr am Main, Germany
| | - Amy Sedney
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Marian Spath
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Maarten Schurink
- Department of Pediatric Surgery, Amalia's Children's Hospital, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Anke Oerlemans
- IQ Healthcare, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Joanna IntHout
- Department for Health Evidence, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Ina Beerendonk
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Didi Braat
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Ronald Peek
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, Gelderland, the Netherlands
| | - Kathrin Fleischer
- Department of Reproductive Medicine, Nij Geertgen Center for Fertility, Ripseweg, Elsendorp, the Netherlands
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Peek R, Nadesapillai S, Thi Nguyen TY, Vassart S, Smeets D, van de Zande G, Camboni A, Braat D, van der Velden J, Donnez J, Fleischer K, Dolmans MM. Assessment of folliculogenesis in ovarian tissue from young patients with Turner syndrome using a murine xenograft model. Fertil Steril 2023:S0015-0282(23)00293-5. [PMID: 37061159 DOI: 10.1016/j.fertnstert.2023.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/13/2023] [Accepted: 04/03/2023] [Indexed: 04/17/2023]
Abstract
OBJECTIVE To study the impact of aneuploid granulosa and stromal cells on folliculogenesis of small ovarian follicles from mosaic Turner syndrome patients using a murine xenograft model. DESIGN Laboratory study SUBJECTS: Ovarian cortical tissue was obtained by laparoscopic surgery from 18 mosaic TS patients (aged 5-19 years) and 13 controls (aged 5-18 years). INTERVENTION Part of each tissue fragment was used to karyotype ovarian cells in non-grafted tissue by fluorescence in situ hybridization. The remaining tissue was xenografted to severe combined immunodeficient mice for 5 months. Grafted tissue was analyzed for aneuploidy, and follicle density and morphology were determined. Expression of proliferating cell nuclear antigen and anti-Müllerian hormone were investigated by immunohistochemistry. MAIN OUTCOME MEASURES The impact of aneuploid granulosa and stromal cells on folliculogenesis. Fluorescence in situ hybridization of ovarian tissue before grafting was performed to determine the level of aneuploidy in stromal cells, and oocytes and granulosa of small follicles. After xenografting the level of aneuploidy of the newly formed layers of granulosa cells was again determined in secondary and antral follicles. RESULTS Follicle density in ovarian tissue from Turner syndrome patients was significantly lower than in controls before grafting. Fluorescence in situ hybridization analysis confirmed that 101/104 oocytes from non-grafted tissue of Turner syndrome patients showed normal X chromosome content, while granulosa and stromal cells were mainly 45,X. Fragments from 12 Turner syndrome patients contained follicles at all stages after xenografting, including secondary and antral follicles. Follicle density in Turner syndrome patients and controls decreased significantly after grafting. Moreover, a shift from high to low proportions of 45,X granulosa cells was observed during folliculogenesis. Expression of PCNA in follicles from TS patients increased significantly during grafting. Secretion of AMH was impaired before grafting in peri-/postpubertal TS girls, but recovered after grafting. CONCLUSION Our study showed that small follicles from mosaic Turner syndrome patients undergo folliculogenesis, despite the presence of aneuploid granulosa and stromal cells. Ovarian tissue cryopreservation could therefore be a valid option to preserve fertility in young mosaic Turner syndrome patients if sufficient numbers of follicles are present, thus preferably before the age of 12.
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Nadesapillai S, van der Velden J, Braat D, Fleischer K, Peek R. Exploring X Chromosomal Aberrations in Ovarian Cells by using Fluorescence In Situ Hybridization. J Vis Exp 2023. [PMID: 37092819 DOI: 10.3791/64734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
Abstract
Millions of people worldwide deal with issues concerning fertility. Reduced fertility, or even infertility, may be due to many different causes, including genetic disorders, of which chromosomal abnormalities are the most common. Fluorescence in situ hybridization (FISH) is a well-known and frequently used method to detect chromosomal aberrations in humans. FISH is mainly used for the analysis of chromosomal abnormalities in the spermatozoa of males with numerical or structural chromosomal aberrations. Furthermore, this technique is also frequently applied in females to detect X chromosomal aberrations that are known to cause ovarian dysgenesis. However, information on the X chromosomal content of ovarian cells from females with X chromosomal aberrations in lymphocytes and/or buccal cells is still lacking. The aim of this study is to advance basic research regarding X chromosomal aberrations in females, by presenting two methods based on FISH to identify the X chromosomal content of ovarian cells. First, a method is described to determine the X chromosomal content of isolated ovarian cells (oocytes, granulosa cells, and stromal cells) in non-grafted ovarian cortex tissue from females with X chromosomal aberrations. The second method is directed at evaluating the effect of chromosomal aberrations on folliculogenesis by determining the X chromosomal content of ovarian cells of newly formed secondary and antral follicles in ovarian tissue, from females with X chromosomal aberrations after long-term grafting into immunocompromised mice. Both methods could be helpful in future research to gain insight into the reproductive potential of females with X chromosomal aberrations.
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Affiliation(s)
| | | | - Didi Braat
- Department of Obstetrics and Gynecology, Radboudumc
| | - Kathrin Fleischer
- Department of Obstetrics and Gynecology, Radboudumc; Department of Reproductive Medicine, Nij Geertgen Center for Fertility
| | - Ronald Peek
- Department of Obstetrics and Gynecology, Radboudumc
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Abstract
Turner syndrome (TS) is a condition in females missing the second sex chromosome (45,X) or parts thereof. It is considered a rare genetic condition and is associated with a wide range of clinical stigmata, such as short stature, ovarian dysgenesis, delayed puberty and infertility, congenital malformations, endocrine disorders, including a range of autoimmune conditions and type 2 diabetes, and neurocognitive deficits. Morbidity and mortality are clearly increased compared with the general population and the average age at diagnosis is quite delayed. During recent years it has become clear that a multidisciplinary approach is necessary toward the patient with TS. A number of clinical advances has been implemented, and these are reviewed. Our understanding of the genomic architecture of TS is advancing rapidly, and these latest developments are reviewed and discussed. Several candidate genes, genomic pathways and mechanisms, including an altered transcriptome and epigenome, are also presented.
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Affiliation(s)
- Claus H Gravholt
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark.,Department of Molecular Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark
| | - Mette Viuff
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark.,Department of Molecular Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark
| | - Jesper Just
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark
| | - Kristian Sandahl
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark
| | - Sara Brun
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark
| | - Janielle van der Velden
- Department of Pediatrics, Radboud University Medical Centre, Amalia Children's Hospital, 6525 Nijmegen, the Netherlands
| | - Niels H Andersen
- Department of Cardiology, Aalborg University Hospital, Aalborg 9000, Denmark
| | - Anne Skakkebaek
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus 8200 N, Denmark.,Department of Clinical Genetics, Aarhus University Hospital, Aarhus 8200 N, Denmark
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van der Coelen S, van der Velden J, Nadesapillai S, Peek R, Braat D, Schleedoorn M, Fleischer K, Oerlemans A. The Decision-Making Process regarding Ovarian Tissue Cryopreservation in Girls with Turner Syndrome by Patients, Parents, and Healthcare Providers: A Mixed-Methods Study. Horm Res Paediatr 2022; 95:374-383. [PMID: 35671713 PMCID: PMC9677842 DOI: 10.1159/000525374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/30/2022] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Ovarian tissue cryopreservation (OTC) has proven to be effective in other patient groups, but the effectiveness in girls with Turner syndrome (TS) is still unclear. Guidelines for counselling about OTC in TS are lacking. The aim of this study was to gain insight into the experiences of patients, parents, and healthcare providers with the decision-making process regarding OTC in girls with TS. METHODS Within a year after counselling, a survey was sent to 132 girls with TS and their parents. Furthermore, focus groups were conducted with (1) gynaecologists with subspeciality reproductive medicine, (2) paediatric endocrinologists, (3) parents of girls aged 2-12, and (4) parents of girls aged 13-18. Transcripts were analysed using a thematic analysis approach. RESULTS The response rate of the survey was 45%. Of the survey respondents, 90% appreciated counselling regarding their future parenting options and considered it an addition to existing healthcare. Girls with TS and their parents indicated that the option of OTC raised hope for future genetic offspring and instantly made them feel that their only option was to seize this opportunity. Gynaecologists and paediatricians found it challenging to truly make families grasp a realistic perspective of OTC in girls with TS. DISCUSSION AND CONCLUSION Offering young girls with TS the possibility of fertility preservation in an experimental setting raised high hopes and led to challenges for healthcare providers in ensuring a considered decision. The appropriate moment for counselling should be tailored to the individual and discussed with patient, parents, and paediatrician.
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Affiliation(s)
- Sanne van der Coelen
- Department of Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands,*Sanne van der Coelen,
| | - Janielle van der Velden
- Department of Paediatrics, Radboudumc, Amalia Children's Hospital, Nijmegen, The Netherlands
| | | | - Ron Peek
- Department of Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
| | - Didi Braat
- Department of Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
| | - Myra Schleedoorn
- Department of Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
| | - Kathrin Fleischer
- Department of Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
| | - Anke Oerlemans
- IQ Healthcare, Radboud Institute for Health Sciences, Radboudumc, Nijmegen, The Netherlands
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Wessels M, Velthuis A, van Lochem E, Duijndam E, Hoorweg-Nijman G, de Kruijff I, Wolters V, Berghout E, Meijer J, Bokma JA, Mul D, van der Velden J, Roovers L, Mearin ML, van Setten P. Corrigendum to Raising the Cut-Off Level of Anti-Tissue Transglutaminase Antibodies to Detect Celiac Disease Reduces the Number of Small Bowel Biopsies in Children with Type 1 Diabetes: A Retrospective Study. The Journal of Pediatrics Volume 223, August 2020, Pages 87-92.e1. J Pediatr 2022; 246:293. [PMID: 35606196 DOI: 10.1016/j.jpeds.2022.04.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Margreet Wessels
- Department of Pediatrics, Rijnstate Hospital, Arnhem, The Netherlands.
| | - Anouk Velthuis
- Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Ellen van Lochem
- Department of Medical Microbiology and Immunology, Rijnstate Hospital, Arnhem, The Netherlands
| | - Eline Duijndam
- Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Ineke de Kruijff
- Department of Pediatrics, St Antonius Hospital, Utrecht, The Netherlands
| | - Victorien Wolters
- Department of Pediatric Gastroenterology, University Medical Center Utrecht-Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - Eveline Berghout
- Department of Pediatrics, Deventer Hospital, Deventer, The Netherlands
| | - Jos Meijer
- Department of Pathology, Rijnstate Hospital, Arnhem, The Netherlands
| | - Jan Alle Bokma
- Department of Pediatrics, Spaarne Hospital, Hoofddorp, The Netherlands
| | - Dick Mul
- Department of Pediatrics, Haga Hospital (Juliana Children's Hospital), The Hague, The Netherlands
| | - Janielle van der Velden
- Department of Pediatrics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - Lian Roovers
- Clinical Research Department, Rijnstate Hospital, Arnhem, The Netherlands
| | - M Luisa Mearin
- Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Petra van Setten
- Department of Pediatrics, Rijnstate Hospital, Arnhem, The Netherlands
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Nadesapillai S, van der Velden J, Braat D, Peek R, Fleischer K. The challenge of defining predictive parameters for fertility preservation counseling in young females with Turner syndrome. Acta Obstet Gynecol Scand 2021; 100:1155-1156. [PMID: 33554331 DOI: 10.1111/aogs.14094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 12/28/2020] [Accepted: 01/09/2021] [Indexed: 12/16/2022]
Affiliation(s)
- Sapthami Nadesapillai
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Didi Braat
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Ron Peek
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Kathrin Fleischer
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, the Netherlands.,The Fertility Partnership-VivaNeo Center of Reproductive Medicine, Düsseldorf, Germany
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Nadesapillai S, van der Velden J, Smeets D, van de Zande G, Braat D, Fleischer K, Peek R. Why are some patients with 45,X Turner syndrome fertile? A young girl with classical 45,X Turner syndrome and a cryptic mosaicism in the ovary. Fertil Steril 2020; 115:1280-1287. [PMID: 33342535 DOI: 10.1016/j.fertnstert.2020.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 11/03/2020] [Accepted: 11/04/2020] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To report a case of a young girl initially diagnosed with exclusively 45,X Turner syndrome (TS), but with a cryptic mosaicism in the ovary. DESIGN Case report. SETTING Radboud University Medical Center in the Netherlands. PATIENT(S) A 14-year-old girl with TS showing an exclusively 45,X cell line in lymphocytes, buccal cells, and urine cells in the presence of ovarian follicles. INTERVENTION(S) Laparoscopic unilateral oophorectomy was performed to obtain ovarian cortex tissue for fertility preservation purposes. One cortex fragment was used to determine the number of follicles by serial sectioning and staining, to perform fluorescence in situ hybridization (FISH) analysis and an in vitro growth (IVG) assay. MAIN OUTCOME MEASURE(S) FISH analysis of ovarian cells and the capacity of unilaminar follicles to develop to secondary follicles. RESULT(S) FISH analysis revealed that most oocytes had a normal tetraploid X chromosomal content, the stromal cell compartment had both 45,X and 47,XXX cell lines, and all follicular granulosa cells had a 45,X karyotype. IVG assay showed that unilaminar follicles were capable of maturing to secondary follicles, but that the granulosa layers and membrana granulosa were distorted. CONCLUSION(S) We report a case where follicles were found in a girl with monosomic TS, in the presence of a cryptic mosaicism. Karyotyping of extraovarian cells was not predictive of the karyotype of ovarian cells in the same patient. Despite the presence of normal oocytes, our observation that all analyzed follicles contained exclusively 45,X granulosa cells embedded in mosaic 45,X/47,XXX stromal tissue may have functional consequences for follicular development. CLINICAL TRIAL REGISTRATION NUMBER NCT03381300.
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Affiliation(s)
- Sapthami Nadesapillai
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, The Netherlands.
| | | | - Dominique Smeets
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Guillaume van de Zande
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Didi Braat
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Kathrin Fleischer
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, The Netherlands; The Fertility Partnership-VivaNeo Center of Reproductive Medicine, Düsseldorf, Germany
| | - Ronald Peek
- Department of Obstetrics and Gynecology, Radboud University Medical Center, Nijmegen, The Netherlands
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Peek R, Schleedoorn M, Smeets D, van de Zande G, Groenman F, Braat D, van der Velden J, Fleischer K. Ovarian follicles of young patients with Turner's syndrome contain normal oocytes but monosomic 45,X granulosa cells. Hum Reprod 2020; 34:1686-1696. [PMID: 31398245 PMCID: PMC6736193 DOI: 10.1093/humrep/dez135] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/21/2019] [Accepted: 06/27/2019] [Indexed: 12/12/2022] Open
Abstract
STUDY QUESTION What is the X chromosomal content of oocytes and granulosa cells of primordial/primary (small) follicles and stromal cells in ovaries of young patients with Turner's syndrome (TS)? SUMMARY ANSWER Small ovarian follicles were detected in one-half of the patients studied, and X chromosome analysis revealed that most oocytes were normal, granulosa cells were largely monosomic, while stromal cells showed a high level of mosaicism. WHAT IS KNOWN ALREADY Most women with TS experience a premature reduction or complete loss of fertility due to an accelerated loss of gametes. To determine whether fertility preservation in this group of patients is feasible, there is a strong need for information on the X chromosomal content of ovarian follicular and stromal cells. STUDY DESIGN, SIZE, DURATION Small follicles (<50 μm) and stromal cells were isolated from ovarian tissue of young TS patients and analysed for their X chromosomal content. In addition to ovarian cells, several other cell types from the same patients were analysed. PARTICIPANTS/MATERIALS, SETTING, METHODS After unilateral ovariectomy, ovarian cortex tissue was obtained from 10 TS patients (aged 2-18 years) with numerical abnormalities of the X chromosome. Ovarian cortex fragments were prepared and cryopreserved. One fragment from each patient was thawed and enzymatically digested to obtain stromal cells and primordial/primary follicles. Stromal cells, granulosa cells and oocytes were analysed by FISH using an X chromosome-specific probe. Extra-ovarian cells (lymphocytes, buccal cells and urine cells) of the same patients were also analysed by FISH. Ovarian tissue used as control was obtained from individuals undergoing oophorectomy as part of their gender affirming surgery. MAIN RESULTS AND THE ROLE OF CHANCE Ovarian follicles were detected in 5 of the 10 patients studied. A method was developed to determine the X chromosomal content of meiosis I arrested oocytes from small follicles. This revealed that 42 of the 46 oocytes (91%) that were analysed had a normal X chromosomal content. Granulosa cells were largely 45,X but showed different levels of X chromosome mosaicism between patients and between follicles of the same patient. Despite the presence of a low percentage (10-45%) of 46,XX ovarian cortex stromal cells, normal macroscopic ovarian morphology was observed. The level of mosaicism in lymphocytes, buccal cells or urine-derived cells was not predictive for mosaicism in ovarian cells. LIMITATIONS, REASONS FOR CAUTION The results are based on a small number (n = 5) of TS patient samples but provide evidence that the majority of oocytes have a normal X chromosomal content and that follicles from the same patient can differ with respect to the level of mosaicism of their granulosa cells. The functional consequences of these observations require further investigation. WIDER IMPLICATIONS OF THE FINDINGS The results indicate that despite normal ovarian and follicular morphology, stromal cells and granulosa cells of small follicles in patients with TS may display a high level of mosaicism. Furthermore, the level of mosaicism in ovarian cells cannot be predicted from the analysis of extra-ovarian tissue. These findings should be considered by physicians when offering cryopreservation of ovarian tissue as an option for fertility preservation in young TS patients. STUDY FUNDING/COMPETING INTEREST(S) Unconditional funding was received from Merck B.V. The Netherlands (Number A16-1395) and the foundation 'Radboud Oncologie Fonds' (Number KUN 00007682). The authors have no conflicts of interest. TRIAL REGISTRATION NUMBER NCT03381300.
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Affiliation(s)
- Ronald Peek
- Department of Obstetrics and Gynecology, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Myra Schleedoorn
- Department of Obstetrics and Gynecology, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Dominique Smeets
- Department of Human Genetics, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Guillaume van de Zande
- Department of Human Genetics, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Freek Groenman
- Amsterdam UMC, Vrije Universiteit Amsterdam, Obstetrics and Gynecology, Amsterdam Reproduction and Development, De Boelelaan 1117 Amsterdam, The Netherlands
| | - Didi Braat
- Department of Obstetrics and Gynecology, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Janielle van der Velden
- Amalia Children's Hospital, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
| | - Kathrin Fleischer
- Department of Obstetrics and Gynecology, Radboud University Medical Center, PO Box 9101, 6500 HB Nijmegen, The Netherlands
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Wessels M, Velthuis A, van Lochem E, Duijndam E, Hoorweg-Nijman G, de Kruijff I, Wolters V, Berghout E, Meijer J, Bokma JA, Mul D, van der Velden J, Roovers L, Mearin ML, van Setten P. Raising the Cut-Off Level of Anti-Tissue Transglutaminase Antibodies to Detect Celiac Disease Reduces the Number of Small Bowel Biopsies in Children with Type 1 Diabetes: A Retrospective Study. J Pediatr 2020; 223:87-92.e1. [PMID: 32381465 DOI: 10.1016/j.jpeds.2020.02.086] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/30/2020] [Accepted: 02/28/2020] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To study the optimal cut-off value for anti-tissue transglutaminase type 2 IgA antibodies (TG2A) in serum to select for diagnostic small bowel biopsies for celiac disease in children with type 1 diabetes mellitus. STUDY DESIGN Children with type 1 diabetes mellitus with elevated TG2A titers and duodenal biopsies performed during the course of their diabetes treatment were included. Anti-endomysial antibodies were recorded if present. The optimal TG2A cut-off value, expressed as the ratio between obtained value and upper limit of normal (ULN), was determined using receiver operating characteristic curve analysis and compared with the cut-off value used in the European Society for Pediatric Gastroenterology, Hepatology and Nutrition guidelines in terms of sensitivity, specificity, positive and negative predictive value. RESULTS We included 63 children. The optimal cut-off value for performing biopsies is demonstrated to be 11 times the ULN. Raising the cut-off value from 3 times the ULN to 11 times the ULN changed sensitivity from 96% to 87% and increased specificity from 36% to 73%, increased the positive predictive value from 88% to 94% and lowered negative predictive value from 67% to 53%. The percentage of normal histology was decreased from 12% to 6%. CONCLUSIONS Increasing the TG2A cut-off value for performing duodenal biopsies in children with type 1 diabetes mellitus and suspected celiac disease leads to a substantial reduction of unnecessary biopsies. We advocate to adapt the European Society for Pediatric Gastroenterology, Hepatology and Nutrition 2012 guidelines for this group of children, including monitoring patients with TG2A levels of less than 11 times the ULN over time.
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Affiliation(s)
- Margreet Wessels
- Department of Pediatrics, Rijnstate Hospital, Arnhem, The Netherlands; Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Anouk Velthuis
- Department of Pediatrics, Rijnstate Hospital, Arnhem, The Netherlands
| | - Ellen van Lochem
- Department of Medical Microbiology and Immunology, Rijnstate Hospital, Arnhem, The Netherlands
| | - Eline Duijndam
- Department of Pediatrics, Rijnstate Hospital, Arnhem, The Netherlands
| | | | - Ineke de Kruijff
- Department of Pediatrics, St Antonius Hospital, Utrecht, The Netherlands
| | - Victorien Wolters
- Department of Pediatric Gastroenterology, University Medical Center Utrecht-Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - Eveline Berghout
- Department of Pediatrics, Deventer Hospital, Deventer, The Netherlands
| | - Jos Meijer
- Department of Pathology, Rijnstate Hospital, Arnhem, The Netherlands
| | - Jan Alle Bokma
- Department of Pediatrics, Spaarne Hospital, Hoofddorp, The Netherlands
| | - Dick Mul
- Department of Pediatrics, Haga Hospital (Juliana Children's Hospital), The Hague, The Netherlands
| | - Janielle van der Velden
- Department of Pediatrics, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - Lian Roovers
- Clinical Research Department, Rijnstate Hospital, Arnhem, The Netherlands
| | - M Luisa Mearin
- Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Petra van Setten
- Department of Pediatrics, Rijnstate Hospital, Arnhem, The Netherlands
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Schleedoorn M, van der Velden J, Braat D, Beerendonk I, van Golde R, Peek R, Fleischer K. TurnerFertility trial: PROTOCOL for an observational cohort study to describe the efficacy of ovarian tissue cryopreservation for fertility preservation in females with Turner syndrome. BMJ Open 2019; 9:e030855. [PMID: 31831533 PMCID: PMC6924773 DOI: 10.1136/bmjopen-2019-030855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE To investigate the occurrence of live birth in women with Turner syndrome (TS) after ovarian tissue cryopreservation in childhood followed by auto transplantation in adulthood and to find reliable prognostic markers for estimating the ovarian reserve in girls with TS in the future. SETTING An observational cohort study with long-term follow-up in a tertiary fertility clinic in the Netherlands. Patients recruitment between January 2018 and December 2021. PARTICIPANTS 100 females aged 2 through 18 years with classical Turner (ie, 45,X0) or Turner variants (ie, 45,X mosaicism or structural anomalies). Girls with Y chromosomal content, minor X deletions with marginal impact on fertility, active HIV, hepatitis B or hepatitis C infection, and/or an absolute contra indication for surgery, anaesthesia or future pregnancy will be excluded. INTERVENTIONS Ovarian cortical tissue will be harvested by performing a unilateral oophorectomy via laparoscopic approach. Ovarian cortex fragments will be prepared and cryopreserved. One fragment per patient will be used to determine follicular density by conventional histology, and to perform fluorescence in situ hybridisation analysis of ovarian cells. Routine chromosome analysis will be performed on both lymphocytes and buccal cells. A blood sample will be taken for hormonal analysis and all subjects will undergo a transabdominal ultrasound to determine the uterine and ovarian size. Patient characteristics, pregnancy rates and pregnancy outcomes will be collected from the patient's medical record. ETHICS AND DISSEMINATION The study protocol has been approved by the Central Committee on Research Involving Human Subjects in November 2017 (CCMO NL57738.000.16). TRIAL REGISTRATION NUMBER NCT03381300.
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Affiliation(s)
- Myra Schleedoorn
- Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
| | | | - Didi Braat
- Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
| | - Ina Beerendonk
- Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
| | - Ron van Golde
- Obstetrics and Gynaecology, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Ron Peek
- Obstetrics and Gynaecology, Radboudumc, Nijmegen, The Netherlands
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Heiwegen K, Janssen S, van Rooij I, van der Velden J, Blaauw I, Botden S. Author Response to "Congenital Diaphragmatic Hernia is Associated with Nonscrotal Testes". J Pediatr Surg 2019; 54:1967. [PMID: 31178167 DOI: 10.1016/j.jpedsurg.2019.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 05/22/2019] [Indexed: 11/16/2022]
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