Publications by authors named "BOUVATTIER"

Introduction: Differences of sex development (DSD) is a group of rare congenital conditions defined by chromosomal, gonadal and/or phenotypic discordance or atypical sex. The mini-puberty, corresponding to the transient postnatal activation of the hypothalamic-pituitary-gonadal axis, is an important diagnosis window in the clinical workup of infants with DSD. First objective to compare clinical data as well as hormone levels during minipuberty between patients with and without a genetic diagnose.

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Objective: To determine the prevalence of genetic and endocrine abnormalities and to assess fetal, neonatal and surgical outcomes in cases of hypospadias associated with fetal growth restriction.

Method: A multicentric retrospective study was conducted across five prenatal diagnosis centers in Paris. The cohort encompassed all fetuses diagnosed with the combination of fetal growth restriction < 10th percentile (FGR) and hypospadias from 2013 to 2021.

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In 2021, for the first time, a legal framework organizing the care of children with a variation in genital development (VGD), sometimes referred to as "intersex children" or "children with differences in sex development" (DSD), was introduced in France (article L. 2131-6 of the Code of Public Health). It should be immediately apparent that the chosen term, "variation" rather than "anomalies" or "disorders" - which was previously used in the medical world - reflects a political will to renew both the way of thinking and the medical practices in this field.

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Introduction: Prenatal investigations are usually performed to diagnose severe or associated forms of hypospadias. However, the value of this workup and the correlation with the postnatal diagnosis and follow-up have not been studied in the literature. The aims of the study were to describe postnatal outcomes.

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Background: Klinefelter syndrome (KS) is associated with an increased risk of lower socioeconomic status and a higher risk for morbidity and mortality, which may have a significant impact on quality of life (QOL). The objective of this study is to investigate QOL in a large European cohort of men with KS.

Design: Cross-sectional multicentre study.

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  • The study evaluated the growth recovery in children with severe Hashimoto's hypothyroidism after starting thyroid hormone replacement therapy.
  • A total of 29 children showed a significant height increase over 1 to 5 years of treatment, but final height didn't fully recover from the height loss at diagnosis.
  • Growth hormone administration in the most severe cases may improve catch-up growth, indicating that HRT alone may not be enough for optimal recovery.
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Objective: Newborns with congenital hypogonadotropic hypogonadism (CHH) have an impaired postnatal activation of the gonadotropic axis. Substitutive therapy with recombinant gonadotropins can be proposed to mimic physiological male mini-puberty during the first months of life. The aim of this study was to compare the clinical and biological efficacy of two treatment modalities of gonadotropins administration during mini-puberty in CHH neonates.

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  • The study analyzed changes in the diagnosis and management of patients with two types of genetic deficiencies (SRD5A2 and HSD17B3) from 1994 to 2020, focusing on current diagnostic practices.
  • Out of 52 patients, over half were diagnosed at birth, with a trend showing earlier diagnoses for those born after 2007, and a notable shift in initial sex assignment from predominantly female to increasingly male.
  • Genetic testing revealed a variety of mutations in both genes, and the study concluded that there’s been a significant change in clinical approaches and therapeutic interventions based on evolving understanding of these conditions.
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  • Gonadectomy is advised for patients with Turner syndrome (TS) and 45,X/46,XY karyotype due to the risk of gonadoblastoma (GB), but the evidence supporting this recommendation is weak.
  • This study aimed to analyze the prevalence and characteristics of GB linked to different types of Y chromosomal material in affected patients.
  • Findings revealed a 12.8% prevalence of GB among 70 patients studied, with complete Y chromosome presence identified as a significant risk factor, suggesting the need for earlier gonadectomy in these cases.*
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Aim: This study aimed to validate the efficacy of hydrogen peroxide vapor (HPV) decontamination technology set up in a biosafety level 3 (BSL-3) laboratory on surrogates and hazard group 3 (HG3) agents.

Methods And Results: The HPV decontamination system (Bioquell) was assessed with both qualitative and quantitative methods on (1) spore surrogates (, , and ) in the BSL-3 laboratory and in the material airlock and on (2) HG3 agents ( SARS-CoV-2, Venezuelan equine encephalitis virus [VEE], and Vaccinia virus) in the BSL-3 laboratory. Other HG3 bacteria likely to be handled in the BSL-3 laboratory (, , , and ) were excluded from the HPV decontamination assays as preliminary viability tests demonstrated the total inactivation of these agents after 48 h drying on different materials.

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  • - Turner syndrome (TS) is a rare genetic condition affecting about 1 in 2,500 liveborn girls, characterized by the absence of all or part of an X chromosome, with common karyotypes being 45,X and 45,X/46,XX mosaic.
  • - The French National Diagnosis and Care Protocol (PNDS) aims to guide healthcare professionals in managing TS, providing insights based on expert consensus and literature review from the French National Reference Center for Rare Growth and Developmental Endocrine disorders.
  • - TS can lead to several health issues, including growth retardation, gonadal dysgenesis, and increased risk of various congenital and acquired diseases, necessitating a collaborative approach among healthcare providers for effective patient
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  • * A study involving 205 men with KS across six European countries found that they had significantly lower educational achievement, job rates, and income satisfaction compared to a normal male population.
  • * Health issues and poor general health perceptions among men with KS contributed to their lower levels of employment and income satisfaction.
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Congenital hypogonadotropic hypogonadism (CHH) is a group of rare diseases characterized by inadequate secretion of the gonadotropins LH (luteinizing hormone) and FSH (follicle stimulating hormone) during the physiological activation periods of the gonadotropic axis. The disease? (anomaly) is present from fetal life and usually persists throughout life. Clinically, hypogonadotropic hypogonadism is associated with neonatal clinical signs (micropenis, cryptorchidism in boys in about half of the cases).

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Objective: To assess the current medical practice in Europe regarding prenatal dexamethasone (Pdex) treatment of congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency.

Design And Methods: A questionnaire was designed and distributed, including 17 questions collecting quantitative and qualitative data. Thirty-six medical centres from 14 European countries responded and 30 out of 36 centres were reference centres of the European Reference Network on Rare Endocrine Conditions, EndoERN.

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The papers and communications selected here, published in 2020-2021, report major advances in pathophysiology, diagnostics, treatment and patient care in the fields of growth hormones and disorders. © 2022 French Society of Pediatrics. Published by Elsevier Masson SAS.

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Since the emergence of the concept of developmental origins of health and disease (DOHaD), suggested by Barker in the 1980s, numerous epidemiological studies in humans have confirmed the relationship between maternal obesity during pregnancy and the risk of offspring developing various chronic adult illnesses. These effects of intrauterine life are independent of inheritance of disease susceptibility genes and/or socio-economic factors. Regarding potential mechanisms, recent data from animal models suggests a role of insulin resistance early in development.

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Background: To date, the usage of Galaxy, an open-source bioinformatics platform, has been reported primarily in research. We report 5 years' experience (2015 to 2020) with Galaxy in our hospital, as part of the "Assistance Publique-Hôpitaux de Paris" (AP-HP), to demonstrate its suitability for high-throughput sequencing (HTS) data analysis in a clinical laboratory setting.

Methods: Our Galaxy instance has been running since July 2015 and is used daily to study inherited diseases, cancer, and microbiology.

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  • Premature ovarian insufficiency (POI) is a condition that affects some women under 40, causing their ovaries to not work properly.
  • The cause of POI can be from different reasons, like genetics or medical treatments, but in many cases, it is unknown.
  • Women with POI may not have their periods and their hormone levels are off, but sometimes they can still get pregnant and may need hormone therapy until they're about 51 years old.
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Introduction: About 8% of children born small for gestational age (SGA) do not reach a final height within the normal range. Recombinant human growth hormone (rhGH) has been shown to be effective in increasing the final height in children born SGA. Our objective was to identify predictive factors of final height in children born SGA treated with rhGH.

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Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency (21OHD) is a disorder of adrenal steroid biosynthesis, leading to hypocortisolism, hypoaldosteronism, and hyperandrogenism. Impaired quality of life (QoL) has been demonstrated in women with CAH, but data on men with CAH are scarce. We hypothesized that disease severity and poor treatment control are inversely associated with QoL.

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Central precocious puberty (CPP) results from early activation of the hypothalamic-pituitary-gonadal (HPG) axis. The current state of knowledge of the complex neural network acting at the level of the hypothalamus and the GnRH neuron to control puberty onset has expanded, particularly in the context of molecular interactions. Along with these advances, the knowledge of pubertal physiology and pathophysiology has also increased.

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Background: Surgery is performed in many individuals with disorders/differences of sex development (DSD). Irreversibility of some surgical procedures, lack of information about the procedures, and lack of follow-up care for physical and psychological outcomes, lead to wish for more knowledge from both surgeons and patients. After the consensus conference in 2006, multidisciplinary care is provided to a higher degree with psychological support and more restricted surgical procedures.

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  • The study focuses on a rare condition called 46,XX SRY-negative testicular and ovotesticular disorders/differences of sex development (T/OTDSD), where testicular tissue develops without a Y chromosome, and aims to understand its phenotype, management, and outcomes.
  • Sixteen patients were reviewed, with the majority diagnosed as newborns, showing varied gender rearing and degrees of external masculinization, while some received treatment to prevent virilization.
  • Results revealed successful gonadal surgery in most cases, with some achieving spontaneous puberty or requiring hormonal treatments, and one patient having a successful pregnancy, along with genetic analyses identifying a mutation in the NR2F2 gene in one individual.
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