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1.
Nat Commun ; 15(1): 2796, 2024 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-38555298

RESUMO

The Y-linked SRY gene initiates mammalian testis-determination. However, how the expression of SRY is regulated remains elusive. Here, we demonstrate that a conserved steroidogenic factor-1 (SF-1)/NR5A1 binding enhancer is required for appropriate SRY expression to initiate testis-determination in humans. Comparative sequence analysis of SRY 5' regions in mammals identified an evolutionary conserved SF-1/NR5A1-binding motif within a 250 bp region of open chromatin located 5 kilobases upstream of the SRY transcription start site. Genomic analysis of 46,XY individuals with disrupted testis-determination, including a large multigenerational family, identified unique single-base substitutions of highly conserved residues within the SF-1/NR5A1-binding element. In silico modelling and in vitro assays demonstrate the enhancer properties of the NR5A1 motif. Deletion of this hemizygous element by genome-editing, in a novel in vitro cellular model recapitulating human Sertoli cell formation, resulted in a significant reduction in expression of SRY. Therefore, human NR5A1 acts as a regulatory switch between testis and ovary development by upregulating SRY expression, a role that may predate the eutherian radiation. We show that disruption of an enhancer can phenocopy variants in the coding regions of SRY that cause human testis dysgenesis. Since disease causing variants in enhancers are currently rare, the regulation of gene expression in testis-determination offers a paradigm to define enhancer activity in a key developmental process.


Assuntos
Disgenesia Gonadal , Testículo , Animais , Feminino , Humanos , Masculino , Linhagem Celular , Mamíferos/genética , Sequências Reguladoras de Ácido Nucleico , Células de Sertoli/metabolismo , Proteína da Região Y Determinante do Sexo/genética , Fator Esteroidogênico 1/genética , Fator Esteroidogênico 1/metabolismo , Testículo/metabolismo
2.
Front Endocrinol (Lausanne) ; 14: 1227164, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37800145

RESUMO

Background: Women with Turner syndrome (TS) (45,X and related karyotypes) have an increased prevalence of conditions such as diabetes mellitus, obesity, hypothyroidism, autoimmunity, hypertension, and congenital cardiovascular anomalies (CCA). Whilst the risk of developing these co-morbidities may be partly related to haploinsufficiency of key genes on the X chromosome, other mechanisms may be involved. Improving our understanding of underlying processes is important to develop personalized approaches to management. Objective: We investigated whether: 1) global genetic variability differs in women with TS, which might contribute to co-morbidities; 2) common variants in X genes - on the background of haploinsufficiency - are associated with phenotype (a "two-hit" hypothesis); 3) the previously reported association of autosomal TIMP3 variants with CCA can be replicated. Methods: Whole exome sequencing was undertaken in leukocyte DNA from 134 adult women with TS and compared to 46,XX controls (n=23), 46,XX women with primary ovarian insufficiency (n=101), and 46,XY controls (n=11). 1) Variability in autosomal and X chromosome genes was analyzed for all individuals; 2) the relation between common X chromosome variants and the long-term phenotypes listed above was investigated in a subgroup of women with monosomy X; 3) TIMP3 variance was investigated in relation to CCA. Results: Standard filtering identified 6,457,085 autosomal variants and 126,335 X chromosome variants for the entire cohort, whereas a somatic variant pipeline identified 16,223 autosomal and 477 X chromosome changes. 1) Overall exome variability of autosomal genes was similar in women with TS and control/comparison groups, whereas X chromosome variants were proportionate to the complement of X chromosome material; 2) when adjusted for multiple comparisons, no X chromosome gene/variants were strongly enriched in monosomy X women with key phenotypes compared to monosomy X women without these conditions, although several variants of interest emerged; 3) an association between TIMP3 22:32857305:C-T and CCA was found (CCA 13.6%; non-CCA 3.4%, p<0.02). Conclusions: Women with TS do not have an excess of genetic variability in exome analysis. No obvious X-chromosome variants driving phenotype were found, but several possible genes/variants of interest emerged. A reported association between autosomal TIMP3 variance and congenital cardiac anomalies was replicated.


Assuntos
Diabetes Mellitus , Síndrome de Turner , Adulto , Humanos , Feminino , Síndrome de Turner/genética , Cariotipagem , Autoimunidade , Fenótipo
4.
J Endocr Soc ; 6(9): bvac108, 2022 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-35935072

RESUMO

A girl presenting with delayed puberty and elevated gonadotropins may have a range of conditions such as Turner syndrome (TS), primary ovarian insufficiency (POI), and 46,XY disorders of sexual development (DSD). An organized and measured approach to investigation can help reach a timely diagnosis. Management of young people often requires specialist multidisciplinary input to address the endocrine and nonendocrine features of these complex conditions, as well as the psychological challenges posed by their diagnosis. Next-generation sequencing within the research setting has revealed several genetic causes of POI and 46,XY DSD, which may further facilitate an individualized approach to care of these young people in the future. Pubertal induction is required in many and the timing of this may need to be balanced with other issues specific to the condition (eg, allowing time for information-sharing in 46,XY DSD, optimizing growth in TS). Shared decision-making and sign-posting to relevant support groups from the outset can help empower young people and their families to manage these conditions. We describe 3 clinical vignettes of girls presenting with delayed puberty and hypergonadotropic amenorrhea and discuss their clinical management in the context of current literature and guidelines.

5.
JCI Insight ; 7(5)2022 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-35138268

RESUMO

Primary ovarian insufficiency (POI) affects 1% of women and carries significant medical and psychosocial sequelae. Approximately 10% of POI has a defined genetic cause, with most implicated genes relating to biological processes involved in early fetal ovary development and function. Recently, Ythdc2, an RNA helicase and N6-methyladenosine reader, has emerged as a regulator of meiosis in mice. Here, we describe homozygous pathogenic variants in YTHDC2 in 3 women with early-onset POI from 2 families: c. 2567C>G, p.P856R in the helicase-associated (HA2) domain and c.1129G>T, p.E377*. We demonstrated that YTHDC2 is expressed in the developing human fetal ovary and is upregulated in meiotic germ cells, together with related meiosis-associated factors. The p.P856R variant resulted in a less flexible protein that likely disrupted downstream conformational kinetics of the HA2 domain, whereas the p.E377* variant truncated the helicase core. Taken together, our results reveal that YTHDC2 is a key regulator of meiosis in humans and pathogenic variants within this gene are associated with POI.


Assuntos
Insuficiência Ovariana Primária , RNA Helicases , Adenosina/análogos & derivados , Adenosina/genética , Adenosina/metabolismo , Feminino , Humanos , Meiose , Insuficiência Ovariana Primária/genética , RNA Helicases/genética
6.
J Clin Endocrinol Metab ; 107(1): e254-e263, 2022 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-34402903

RESUMO

BACKGROUND: Primary ovarian insufficiency (POI) affects 1% of women and is associated with significant medical consequences. A genetic cause for POI can be found in up to 30% of women, elucidating key roles for these genes in human ovary development. OBJECTIVE: We aimed to identify the genetic mechanism underlying early-onset POI in 2 sisters from a consanguineous pedigree. METHODS: Genome sequencing and variant filtering using an autosomal recessive model was performed in the 2 affected sisters and their unaffected family members. Quantitative reverse transcriptase PCR (qRT-PCR) and RNA sequencing were used to study the expression of key genes at critical stages of human fetal gonad development (Carnegie Stage 22/23, 9 weeks post conception (wpc), 11 wpc, 15/16 wpc, 19/20 wpc) and in adult tissue. RESULTS: Only 1 homozygous variant cosegregating with the POI phenotype was found: a single nucleotide substitution in zinc finger SWIM-type containing 7 (ZSWIM7), NM_001042697.2: c.173C > G; resulting in predicted loss-of-function p.(Ser58*). qRT-PCR demonstrated higher expression of ZSWIM7 in the 15/16 wpc ovary compared with testis, corresponding to peak meiosis in the fetal ovary. RNA sequencing of fetal gonad samples showed that ZSWIM7 has a similar temporal expression profile in the developing ovary to other homologous recombination genes. MAIN CONCLUSIONS: Disruption of ZSWIM7 is associated with POI in humans. ZSWIM7 is likely to be important for human homologous recombination; these findings expand the range of genes associated with POI in women.


Assuntos
Amenorreia/genética , Proteínas de Ligação a DNA/genética , Meiose/genética , Oogênese/genética , Insuficiência Ovariana Primária/genética , Adolescente , Amenorreia/diagnóstico , Criança , Análise Mutacional de DNA , Feminino , Humanos , Mutação com Perda de Função , Ovário/crescimento & desenvolvimento , Linhagem , Mutação Puntual , Insuficiência Ovariana Primária/complicações , Insuficiência Ovariana Primária/diagnóstico , RNA-Seq , Dedos de Zinco
7.
Artigo em Inglês | MEDLINE | ID: mdl-34924261

RESUMO

The natural lifespan of the ovary is occasionally interrupted by pathological processes; some are known, but many are unknown. Premature ovarian insufficiency (POI) can be a devastating diagnosis for an adolescent or for someone who has yet to start a family. Common causes of POI include genetic and chromosomal defects, autoimmune damage, and cancer treatments. Knowledge of the pathogenesis of this condition and an awareness of contemporary hormone replacement and fertility options are required to design a multidisciplinary therapeutic approach comprising reproductive medicine, endocrinology, clinical psychology, and assisted fertility expertise.


Assuntos
Insuficiência Ovariana Primária , Adolescente , Feminino , Fertilidade , Terapia de Reposição Hormonal/efeitos adversos , Humanos , Insuficiência Ovariana Primária/diagnóstico , Insuficiência Ovariana Primária/etiologia , Insuficiência Ovariana Primária/terapia
8.
Clin Endocrinol (Oxf) ; 93(4): 473-481, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32579712

RESUMO

OBJECTIVE: Age at first date and sexual intercourse have been observed to be delayed in women with Turner syndrome (TS), with delayed puberty being the main factor. We sought to assess relationship and sexual experiences comparing women with TS and premature ovarian insufficiency (POI). DESIGN: Cross-sectional observational study. PATIENTS: 302 women with TS and 53 women with karyotypically normal POI (median age 33.0 [15.0-78.4] and 26.3 [17.8-52.3], respectively). MEASUREMENTS: A self-reporting questionnaire was used to collect data on relationship and sexual experiences. RESULTS: Women with TS were older than women with POI (P = .002). Compared to women with POI, a smaller proportion of women with TS had ever had vaginal sexual intercourse (VSI) (40 [78.4%] vs 169 [58.1%], respectively, P = .006) and women with TS exhibited a delay in the median age at first relationship and VSI (POI 19.3 ± 0.4 vs TS 22.2 ± 1.1, P = <.001). Start of oestrogen replacement therapy at ≤ 14 years of age compared with > 14 years did not result in earlier relationship and sexual debut. After adjusting for age and diagnosis, induction of puberty, as opposed to spontaneous puberty, was associated with a delay in the median age at first relationship and VSI and a reduced probability of having VSI (Hazard ratio = 0.44 [95% confidence interval: 0.32-0.60], P = <.001). CONCLUSIONS: Turner syndrome and induction of puberty are associated with a reduced likelihood and a delay in relationship and sexual experiences. Women needing puberty induction and women with TS more than POI have a delayed mean age at first VSI compared to the general population.


Assuntos
Insuficiência Ovariana Primária , Síndrome de Turner , Adulto , Estudos Transversais , Estrogênios , Feminino , Humanos , Recém-Nascido , Puberdade
9.
Genet Med ; 22(1): 150-159, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31337883

RESUMO

PURPOSE: XY individuals with disorders/differences of sex development (DSD) are characterized by reduced androgenization caused, in some children, by gonadal dysgenesis or testis regression during fetal development. The genetic etiology for most patients with 46,XY gonadal dysgenesis and for all patients with testicular regression syndrome (TRS) is unknown. METHODS: We performed exome and/or Sanger sequencing in 145 individuals with 46,XY DSD of unknown etiology including gonadal dysgenesis and TRS. RESULTS: Thirteen children carried heterozygous missense pathogenic variants involving the RNA helicase DHX37, which is essential for ribosome biogenesis. Enrichment of rare/novel DHX37 missense variants in 46,XY DSD is highly significant compared with controls (P value = 5.8 × 10-10). Five variants are de novo (P value = 1.5 × 10-5). Twelve variants are clustered in two highly conserved functional domains and were specifically associated with gonadal dysgenesis and TRS. Consistent with a role in early testis development, DHX37 is expressed specifically in somatic cells of the developing human and mouse testis. CONCLUSION: DHX37 pathogenic variants are a new cause of an autosomal dominant form of 46,XY DSD, including gonadal dysgenesis and TRS, showing that these conditions are part of a clinical spectrum. This raises the possibility that some forms of DSD may be a ribosomopathy.


Assuntos
Disgenesia Gonadal 46 XY/genética , Mutação de Sentido Incorreto , RNA Helicases/genética , Análise de Sequência de DNA/métodos , Testículo/crescimento & desenvolvimento , Adolescente , Animais , Pré-Escolar , Feminino , Predisposição Genética para Doença , Heterozigoto , Humanos , Recém-Nascido , Masculino , Camundongos , Mutagênese Sítio-Dirigida , Taxa de Mutação , Domínios Proteicos , RNA Helicases/química , Testículo/metabolismo , Adulto Jovem
10.
J Endocr Soc ; 3(12): 2341-2360, 2019 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-31745530

RESUMO

CONTEXT: The genetic basis of human sex development is slowly being elucidated, and >40 different genetic causes of differences (or disorders) of sex development (DSDs) have now been reported. However, reaching a specific diagnosis using traditional approaches can be difficult, especially in adults where limited biochemical data may be available. OBJECTIVE: We used a targeted next-generation sequencing approach to analyze known and candidate genes for DSDs in individuals with no specific molecular diagnosis. PARTICIPANTS AND DESIGN: We studied 52 adult 46,XY women attending a single-center adult service, who were part of a larger cohort of 400 individuals. Classic conditions such as17ß-hydroxysteroid dehydrogenase deficiency type 3, 5α-reductase deficiency type 2, and androgen insensitivity syndrome were excluded. The study cohort had broad working diagnoses of complete gonadal dysgenesis (CGD) (n = 27) and partially virilized 46,XY DSD (pvDSD) (n = 25), a group that included partial gonadal dysgenesis and those with a broad "partial androgen insensitivity syndrome" label. Targeted sequencing of 180 genes was undertaken. RESULTS: Overall, a likely genetic cause was found in 16 of 52 (30.8%) individuals (22.2% CGD, 40.0% pvDSD). Pathogenic variants were found in sex-determining region Y (SRY; n = 3), doublesex and mab-3-related transcription factor 1 (DMRT1; n = 1), NR5A1/steroidogenic factor-1 (SF-1) (n = 1), and desert hedgehog (DHH; n = 1) in the CGD group, and in NR5A1 (n = 5), DHH (n = 1), and DEAH-box helicase 37 (DHX37; n = 4) in the pvDSD group. CONCLUSIONS: Reaching a specific diagnosis can have clinical implications and provides insight into the role of these proteins in sex development. Next-generation sequencing approaches are invaluable, especially in adult populations or where diagnostic biochemistry is not possible.

11.
Clin Endocrinol (Oxf) ; 91(6): 743-749, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31612507

RESUMO

OBJECTIVE: Women with early-onset oestrogen deficiency are at risk of reduced bone mineral density (BMD). We sought to assess fracture history and BMD in women with Turner syndrome (TS) and premature ovarian insufficiency (POI). DESIGN: A cross-sectional observational study. PATIENTS: Two hundred and sixty seven women with TS (median age 34.3 years) and 67 women with POI (median age 28.1 years). MEASUREMENTS: A questionnaire was used to collect data on fracture history, co-morbidities and drug history including age at first oestrogen exposure. Clinical data included height, weight, serum vitamin D and hip and spine T-scores, which were adjusted for height and age. Fractures were subdivided into major osteoporotic fractures (MOF) and 'other' fracture types. RESULTS: Overall fracture rate was similar in women with TS and POI (82 [30.5%] vs 22 [32.8%] respectively, P = .74). Compared to women with POI, those with TS had more fractures at MOF sites (30.2% vs 52.7%, P = .012) and fewer phalangeal fractures (27.9% vs 9.8%, P = .005). There was no difference in BMD between women who sustained a fracture compared to those who did not. Women with TS who fractured were more likely to suffer from hearing impairment compared to those with no fracture (62.2% vs 48.1%, P = .045). CONCLUSIONS: TS is not associated with an overall excess risk of bone fracture. The higher rate of fractures at MOF sites in women with TS may be secondary to hearing impairment, thin cortical bone and abnormal bone remodelling.


Assuntos
Fraturas por Osteoporose/epidemiologia , Insuficiência Ovariana Primária/epidemiologia , Síndrome de Turner/epidemiologia , Adolescente , Adulto , Idoso , Densidade Óssea/fisiologia , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fraturas por Osteoporose/sangue , Insuficiência Ovariana Primária/sangue , Fatores de Risco , Inquéritos e Questionários , Síndrome de Turner/sangue , Vitamina D/sangue , Adulto Jovem
12.
Clin Endocrinol (Oxf) ; 91(6): 798-804, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31487390

RESUMO

OBJECTIVE: Adequate uterine growth is an essential component of pubertal induction with exogenous oestradiol in those with hypogonadism. Poor uterine development will render the individual vulnerable in the context of fertility. We assessed uterine size using ultrasound in those who had undergone pubertal induction treatment compared with a reference group who had experienced spontaneous puberty. DESIGN: This is a single-centre, retrospective, cross-sectional study of women who underwent pubertal induction compared with a reference group. PATIENTS: Ninety-five women with hypogonadism who had previously undergone pubertal induction and were receiving maintenance oestrogen replacement as adults were recruited: 48 women with Turner syndrome, 32 with premature ovarian insufficiency and 15 with gonadotrophin deficiency. The reference group consisted of 35 nulliparous women attending with male factor subfertility with a normal pelvis on ultrasonography. MEASUREMENTS: Pelvic ultrasound was performed by a single observer. Uterine dimensions (total length, anterior-posterior (AP), transverse, uterine volume and fundal cervical AP ratio (FCR) measurements) were recorded. Clinical details were also recorded. RESULTS: Those with hypogonadism had significantly reduced uterine dimensions compared with the reference group (uterine length 64 mm vs 71 mm P = <.05, uterine volume 28.9 mL vs 43.9 mL P = <.05). All women in the reference group attained a mature uterine configuration with a FCR >1, compared with 84% of those with hypogonadism (P = .01). A total of 24% and 48% of the diagnostic group had total uterine length and uterine volume measurements less than the 5th percentile of the reference group, respectively. In a subgroup of 22 women in whom serum oestradiol concentrations could be analysed, there was a positive correlation between this parameter and uterine volume. CONCLUSION: Despite standard oestrogen therapy, uterine growth is often compromised in those with hypogonadism. Uterine health has historically been overlooked in pubertal induction protocols; however, with increasing options for fertility treatment, adequate uterine development is crucial. Given the variation in uterine size witnessed, a more tailored approach to treatment with regular monitoring of uterine dimensions should be advocated.


Assuntos
Hipogonadismo/diagnóstico por imagem , Puberdade/fisiologia , Útero/diagnóstico por imagem , Adolescente , Adulto , Estudos Transversais , Feminino , Humanos , Estudos Retrospectivos , Maturidade Sexual/fisiologia , Síndrome de Turner/fisiopatologia , Adulto Jovem
13.
Fertil Steril ; 112(4): 758-763, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31351702

RESUMO

OBJECTIVE: To study the effects of increasingly prosperous diet content on clinical features of polycystic ovary syndrome (PCOS). DESIGN: A cross-sectional cohort study of 711 women with PCOS from a heterogeneous population spanning a wide spectrum of socioeconomic strata. SETTING: Independent hospital. PATIENT(S): A total of 711 women with PCOS in whom the diagnosis was based on Rotterdam criteria. Results were compared with a locally recruited reference group. INTERVENTION(S): Clinical assessment of women with PCOS. MAIN OUTCOME MEASURE(S): Clinical characteristics were assessed with particular reference to diet composition. Four diet groups were identified: simple rice with vegetables, vegetarian with mixed carbohydrates, nonvegetarian with mixed carbohydrates, and an urban diet of processed foods. RESULT(S): Women with PCOS showed the characteristic features of raised LH and androstenedione concentrations and increased ovarian volume and antral follicle count. There was a notable association between an increasingly affluent diet, the presence of hirsutism, raised body mass index, insulin resistance, and higher serum antimüllerian hormone concentrations. The positive association between antimüllerian hormone and body mass index is an unusual feature possibly explained by the wide spectrum of lifestyles in this cohort. CONCLUSION(S): Urbanization of women in India is associated with increasingly severe phenotype of PCOS, which is likely to have implications on fertility outcomes.


Assuntos
Dieta , Síndrome do Ovário Policístico/etiologia , Urbanização , Adulto , Hormônio Antimülleriano/sangue , Índice de Massa Corporal , Estudos de Coortes , Estudos Transversais , Feminino , Humanos , Índia , Resistência à Insulina , Fenótipo , Classe Social
14.
Clin Endocrinol (Oxf) ; 91(2): 237-244, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31004515

RESUMO

BACKGROUND: Discordance between gonadal type and gender identity has often led to an assumption of infertility in patients with differences in sex development (DSD). However, there is now greater recognition of fertility being an important issue for this group of patients. Currently, gonadal tissue that may have fertility potential is not being stored for individuals with DSD and, where gonadectomy forms part of management, is often discarded. The area of fertility preservation has been predominantly driven by oncofertility which is a field dedicated to preserving the fertility of patients undergoing gonadotoxic cancer treatment. The use of fertility preservation techniques could be expanded to include individuals with DSD where functioning gonads are present. METHODS: This is a systematic literature review evaluating original research articles and relevant reviews between 1974 and 2018 addressing DSD and fertility, in vitro maturation of sperm, and histological/ultrastructural assessment of gonadal tissue in complete and partial androgen insensitivity syndrome, 17ß-hydroxysteroid dehydrogenase type 3 and 5α-reductase deficiency. CONCLUSION: Successful clinical outcomes of ovarian tissue cryopreservation are paving the way for similar research being conducted using testicular tissue and sperm. There have been promising results from both animal and human studies leading to cryopreservation of testicular tissue now being offered to boys prior to cancer treatment. Although data are limited, there is evidence to suggest the presence of reproductive potential in the gonads of some individuals with DSD. Larger, more detailed studies are required, but if these continue to be encouraging, individuals with DSD should be given the same information, opportunities and access to fertility preservation as other patient groups.


Assuntos
3-Oxo-5-alfa-Esteroide 4-Desidrogenase/deficiência , Criopreservação/métodos , Transtorno 46,XY do Desenvolvimento Sexual/fisiopatologia , Transtornos do Desenvolvimento Sexual/fisiopatologia , Preservação da Fertilidade/métodos , Hipospadia/fisiopatologia , Erros Inatos do Metabolismo de Esteroides/fisiopatologia , Transtorno 46,XY do Desenvolvimento Sexual/diagnóstico , Transtornos do Desenvolvimento Sexual/diagnóstico , Feminino , Humanos , Hipospadia/diagnóstico , Masculino , Ovário/fisiologia , Reprodução/fisiologia , Espermatozoides/fisiologia , Erros Inatos do Metabolismo de Esteroides/diagnóstico
15.
Clin Endocrinol (Oxf) ; 90(6): 822-826, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30820975

RESUMO

OBJECTIVE: The dual diagnosis of hypoplastic uterus in association with ovarian dysgenesis is regularly reported but the pathogenesis of the association is unclear. The uterus, however, may be invisible to all imaging modalities without at least six months of exogenous oestrogen exposure in complete ovarian failure. We assessed all available case reports in this category to estimate whether the apparent association between primary ovarian insufficiency or Turner syndrome and Mullerian agenesis can be largely accounted for by oestrogen deficiency. DESIGN: A literature review of all cases in which an association between ovarian insufficiency or Turner syndrome and hypoplastic uterus has been reported. PATIENTS: PubMed was searched for all case reports associated with relevant key terms. In total, 22 publications with a total of 25 patients were identified and reviewed; 14 subjects had the normal female karyotype (46,XX), and 11 subjects had Turner Syndrome. MEASUREMENTS: Proportion of subjects who had been exposed to adequate oestrogen prior to the absent uterine diagnosis. RESULTS: A diagnosis of absent uterus was made prior to exposure to exogenous oestrogen in 22/25 (88%) of subjects with primary hypogonadism including 14/14 females with normal karyotype and 8/11 females with Turner syndrome. CONCLUSIONS: Oestrogen deficiency is a possible explanation for most subjects being reported as having Mullerian agenesis in association with Turner syndrome or primary ovarian insufficiency. In the presence of oestrogen deficiency, no conclusion can be made about the status of the uterus until adequate exposure to exogenous oestrogen has been completed and we suggest reassessment of the uterus when full adult dose has been reached towards the end of induction of puberty.


Assuntos
Estrogênios/deficiência , Útero/anormalidades , Transtornos 46, XX do Desenvolvimento Sexual/complicações , Adolescente , Adulto , Criança , Doenças do Sistema Endócrino/complicações , Feminino , Humanos , Insuficiência Ovariana Primária/complicações , Maturidade Sexual , Síndrome de Turner/complicações , Anormalidades Urogenitais , Adulto Jovem
16.
J Clin Endocrinol Metab ; 104(7): 2820-2826, 2019 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-30726925

RESUMO

CONTEXT: Turner syndrome (TS) is often associated with delayed puberty. To induce puberty, estrogen is administered in incremental doses at an age determined by age of presentation. After puberty, various types of maintenance estrogen replacement therapy (ERT) are used. OBJECTIVE: We sought associations between age of induction of puberty and type of ERT on adult health outcomes. DESIGN: Health surveillance data included blood profiles, bone density, and blood pressure. We assessed interactions between these data and age at first estrogen exposure in women with primary amenorrhea. We also assessed these data according to ERT subgroups [combined oral contraceptive pill (OCP), oral estrogen (OE), and transdermal estradiol (TE)] using data from each of 6679 clinic visits, controlling for age, body mass index, and height. SETTING: Adult TS clinic at University College London Hospital. PATIENTS: Of 799 women with TS, 624 had primary amenorrhea and 599 had accurate maintenance ERT data. MAIN OUTCOME MEASURES: Parameters of health surveillance derived from clinical guidelines. RESULTS: Estrogen start age was negatively correlated with adult bone density (spine: r = -0.20 and hip: r = -0.022; P ≤ 0.001). OCP users had higher blood pressure and an adverse lipid profile compared with other ERT subgroups. TE was associated with elevated liver enzymes and hemoglobin A1c compared with OE (P ≤ 0.01). CONCLUSIONS: An earlier age of induction of puberty may be beneficial for adult bone density. Given the high prevalence of hypertension in TS, the use of OCP for ERT should be limited. OE may be a benefit for steatohepatitis.


Assuntos
Anticoncepcionais Orais Combinados/uso terapêutico , Estradiol/uso terapêutico , Terapia de Reposição de Estrogênios/métodos , Estrogênios/uso terapêutico , Puberdade Tardia/tratamento farmacológico , Síndrome de Turner/tratamento farmacológico , Administração Cutânea , Administração Oral , Adolescente , Adulto , Fatores Etários , Idoso , Alanina Transaminase/metabolismo , Fosfatase Alcalina/metabolismo , Pressão Sanguínea , Índice de Massa Corporal , Densidade Óssea , Colesterol/metabolismo , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Pessoa de Meia-Idade , Triglicerídeos/metabolismo , Adulto Jovem , gama-Glutamiltransferase/metabolismo
17.
Fertil Steril ; 111(3): 505-509, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30598170

RESUMO

OBJECTIVE: To study the safety and efficacy of ovarian stimulation and oocyte cryopreservation as a method of fertility preservation in women with Turner syndrome (TS). DESIGN: Retrospective cohort study. SETTING: Reproductive medicine clinic. PATIENT(S): Seven women with TS who attended the clinic between 2011 and 2017. INTERVENTION(S): Ovarian stimulation and oocyte cryopreservation. MAIN OUTCOMES MEASURE(S): Number of oocytes cryopreserved, ovarian hyperstimulation syndrome. RESULT(S): The oocyte retrieval rates (mean ± SD, 9 ± 3.16) in women with TS were comparable to the published data from healthy women. The oocyte yield was higher than expected based on the low antimüllerian hormone levels. There was no correlation between baseline antimüllerian hormone or antral follicle count levels and the number of oocytes retrieved. CONCLUSION(S): Oocyte cryopreservation after ovarian stimulation appears to be safe and successful in women with mosaic TS who wish to consider fertility preservation.


Assuntos
Criopreservação , Fármacos para a Fertilidade Feminina/uso terapêutico , Preservação da Fertilidade/métodos , Infertilidade Feminina/terapia , Oócitos , Indução da Ovulação/métodos , Ovulação/efeitos dos fármacos , Síndrome de Turner/complicações , Adolescente , Adulto , Feminino , Fármacos para a Fertilidade Feminina/efeitos adversos , Preservação da Fertilidade/efeitos adversos , Humanos , Infertilidade Feminina/diagnóstico , Infertilidade Feminina/etiologia , Infertilidade Feminina/fisiopatologia , Recuperação de Oócitos , Síndrome de Hiperestimulação Ovariana/induzido quimicamente , Reserva Ovariana/efeitos dos fármacos , Indução da Ovulação/efeitos adversos , Gravidez , Estudos Retrospectivos , Resultado do Tratamento , Síndrome de Turner/diagnóstico , Síndrome de Turner/genética , Adulto Jovem
18.
J Pediatr Adolesc Gynecol ; 32(3): 300-304, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30582973

RESUMO

STUDY OBJECTIVE: To summarize the self-reported sexual experiences of women with vaginal agenesis before treatment and discuss the clinical implications. DESIGN: A retrospective review of pretreatment baseline sexuality data and medical records of women with vaginal agenesis seeking vaginal construction. SETTING: A specialist multidisciplinary center for women with genital differences associated with diverse sex development. PARTICIPANTS: One hundred thirty-seven women with untreated vaginal agenesis associated with Mayer-Rokitansky-Küster-Hauser Syndrome and complete androgen insensitivity syndrome aged 15 to 41 years (mean age, 20 years). INTERVENTIONS: Gynecological examination and completion of questionnaires. MAIN OUTCOME MEASURES: (1) Sexual Experiences Questionnaire; (2) Multidimensional Sexuality Questionnaire; (3) Vaginal Self-Perceptions; and (4) vaginal length. RESULTS: A sizable proportion of women reported having had sexually intimate experiences before any medical intervention on the vagina. Vaginal length, which ranged from dimple to 7 cm and averaged 2.7 cm for the cohort, was unrelated to the range of sexual experiences. Most women perceived their vagina as being too small, but less than half believed that a sexual partner would notice this. Two-thirds of the cohort subsequently completed the dilation program, which was not predicted by pretreatment vaginal length or sexual experience. CONCLUSION: Contrary to the assumption that a vagina of certain dimensions is a prerequisite for women to "have sex," many women with Mayer-Rokitansky-Küster-Hauser syndrome and complete androgen insensitivity syndrome reported having experienced genital and nongenital sexual activities with no medical interventions. It is recommended that treatment providers affirm women's capacity for sexual intimacy, relationships, and enjoyment before they introduce the topic of vaginal construction as a non-urgent choice.


Assuntos
Anormalidades Congênitas/psicologia , Comportamento Sexual , Vagina/anormalidades , Transtornos 46, XX do Desenvolvimento Sexual/complicações , Adolescente , Adulto , Síndrome de Resistência a Andrógenos/complicações , Anormalidades Congênitas/etiologia , Feminino , Humanos , Masculino , Ductos Paramesonéfricos/anormalidades , Procedimentos de Cirurgia Plástica/psicologia , Estudos Retrospectivos , Autoimagem , Autorrelato , Resultado do Tratamento , Adulto Jovem
19.
J Clin Endocrinol Metab ; 103(11): 4043-4088, 2018 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-30272171

RESUMO

Objective: To update the congenital adrenal hyperplasia due to steroid 21-hydroxylase deficiency clinical practice guideline published by the Endocrine Society in 2010. Conclusions: The writing committee presents updated best practice guidelines for the clinical management of congenital adrenal hyperplasia based on published evidence and expert opinion with added considerations for patient safety, quality of life, cost, and utilization.


Assuntos
Hiperplasia Suprarrenal Congênita/terapia , Endocrinologia/normas , Sociedades Médicas/normas , Hiperplasia Suprarrenal Congênita/diagnóstico , Hiperplasia Suprarrenal Congênita/economia , Hiperplasia Suprarrenal Congênita/genética , Análise Custo-Benefício , Feminino , Terapias Fetais/economia , Terapias Fetais/métodos , Terapias Fetais/normas , Aconselhamento Genético/economia , Aconselhamento Genético/métodos , Aconselhamento Genético/normas , Glucocorticoides/uso terapêutico , Humanos , Recém-Nascido , Assistência de Longa Duração/economia , Assistência de Longa Duração/métodos , Assistência de Longa Duração/normas , Triagem Neonatal/economia , Triagem Neonatal/normas , Segurança do Paciente/normas , Qualidade de Vida , Terapias em Estudo/economia , Terapias em Estudo/métodos , Terapias em Estudo/normas
20.
Cell Rep ; 22(5): 1236-1249, 2018 01 30.
Artigo em Inglês | MEDLINE | ID: mdl-29386111

RESUMO

Adrenal insufficiency is managed by hormone replacement therapy, which is far from optimal; the ability to generate functional steroidogenic cells would offer a unique opportunity for a curative approach to restoring the complex feedback regulation of the hypothalamic-pituitary-adrenal axis. Here, we generated human induced steroidogenic cells (hiSCs) from fibroblasts, blood-, and urine-derived cells through forced expression of steroidogenic factor-1 and activation of the PKA and LHRH pathways. hiSCs had ultrastructural features resembling steroid-secreting cells, expressed steroidogenic enzymes, and secreted steroid hormones in response to stimuli. hiSCs were viable when transplanted into the mouse kidney capsule and intra-adrenal. Importantly, the hypocortisolism of hiSCs derived from patients with adrenal insufficiency due to congenital adrenal hyperplasia was rescued by expressing the wild-type version of the defective disease-causing enzymes. Our study provides an effective tool with many potential applications for studying adrenal pathobiology in a personalized manner and opens venues for the development of precision therapies.


Assuntos
Corticosteroides/biossíntese , Hiperplasia Suprarrenal Congênita , Insuficiência Adrenal/etiologia , Técnicas de Reprogramação Celular/métodos , Células-Tronco Pluripotentes Induzidas , Hiperplasia Suprarrenal Congênita/complicações , Células Cultivadas , Humanos , Células-Tronco Pluripotentes Induzidas/citologia , Células-Tronco Pluripotentes Induzidas/metabolismo , Modelos Biológicos
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