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1.
J Clin Endocrinol Metab ; 107(3): e912-e923, 2022 02 17.
Artigo em Inglês | MEDLINE | ID: mdl-34752621

RESUMO

CONTEXT: First-degree relatives of women with polycystic ovary syndrome (PCOS) present hormonal and metabolic alterations compared to girls unrelated to PCOS. It is unknown whether glucose intolerance in the PCOS proband confers a more severe metabolic predisposition on their first-degree relatives. OBJECTIVE: To determine whether glucose tolerance status in women with PCOS is associated with worsened glucose metabolism and sex hormone levels in their peripubertal daughters or sisters. DESIGN: Cross-sectional study. SETTING: Seven academic centers in North America, South America, and Europe. PATIENTS: Sixty-four pairs of women with PCOS and their daughters or younger sisters aged between 8 and 14 years were recruited. Twenty-five mothers or older sisters with PCOS were glucose intolerant (GI) and 39 were normal glucose tolerant (NGT). MAIN OUTCOME MEASURES: Beta-cell function estimated by the insulin secretion-sensitivity index-2 (ISSI-2) during an oral glucose tolerance test and by the disposition index during a frequently sampled IV glucose tolerance test. Free testosterone and 17-hydroxyprogesterone (17-OHP) levels. RESULTS: Being related to a GI PCOS proband was associated with a lower ISSI-2 (P-value = 0.032) after adjusting for ethnicity, body mass index z-score, and pubertal stage. They also had higher free testosterone (P-value = 0.011) and 17-OHP levels compared to girls with an NGT proband, the latter becoming significant after adjusting for confounders (P-value = 0.040). CONCLUSIONS: Compared to first-degree female relatives of women with PCOS and NGT, first-degree relatives of women with PCOS and GI display lower beta-cell function and hyperandrogenemia, putting them at higher risk of GI and PCOS development.


Assuntos
Androgênios/sangue , Intolerância à Glucose/epidemiologia , Ovário/metabolismo , Síndrome do Ovário Policístico/metabolismo , Adolescente , Androgênios/metabolismo , Criança , Estudos Transversais , Feminino , Glucose/metabolismo , Intolerância à Glucose/sangue , Intolerância à Glucose/diagnóstico , Intolerância à Glucose/metabolismo , Teste de Tolerância a Glucose , Humanos , Insulina/metabolismo , Resistência à Insulina , Células Secretoras de Insulina/metabolismo , Núcleo Familiar , Ovário/patologia , Fatores de Risco , Irmãos
2.
JAMA Pediatr ; 172(5): 452-460, 2018 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-29532078

RESUMO

Importance: Because of the substantial increase in the occurrence of type 2 diabetes in the pediatric population and the medical complications of this condition, therapies are urgently needed that will achieve better glycemic control than standard medical management. Objective: To compare glycemic control in cohorts of severely obese adolescents with type 2 diabetes undergoing medical and surgical interventions. Design, Setting, and Participants: A secondary analysis of data collected by the Teen-Longitudinal Assessment of Bariatric Surgery (Teen-LABS) and Treatment Options of Type 2 Diabetes in Adolescents and Youth (TODAY) consortia was performed. Teen-LABS enrolled 242 adolescents (≤19 years of age) from March 1, 2007, through December 31, 2011. TODAY randomized 699 participants (aged 10-17 years) from July 24, 2004, through February 25, 2009. Data analysis was performed from July 6, 2015, to June 24, 2017. Anthropometric, clinical, and laboratory data from adolescents with severe obesity and type 2 diabetes who underwent treatment with metabolic or bariatric surgery in the Teen-LABS study or medical therapy in the TODAY study were compared. Interventions: Teen-LABS participants underwent a primary bariatric surgical procedure; TODAY participants were randomized to receive metformin therapy alone or in combination with rosiglitazone or an intensive lifestyle intervention; insulin therapy was given in cases of progression of disease. Main Outcomes and Measures: Glycemic control, body mass index, prevalence of elevated blood pressure, dyslipidemia, abnormal kidney function, and clinical adverse events were measured. Results: Data from 30 participants from Teen-LABS (mean [SD] age at baseline, 16.9 [1.3] years; 21 [70%] female; 18 [66%] white) and 63 from TODAY (mean [SD] age at baseline, 15.3 [1.3] years; 28 [44%] female; 45 [71%] white) were analyzed. During 2 years, mean hemoglobin A1c concentration decreased from 6.8% (95% CI, 6.4%-7.3%) to 5.5% (95% CI, 4.7% -6.3%) in Teen-LABS and increased from 6.4% (95% CI, 6.1%-6.7%) to 7.8% (95% CI, 7.2%-8.3%) in TODAY. Compared with baseline, the body mass index decreased by 29% (95% CI, 24%-34%) in Teen-LABS and increased by 3.7% (95% CI, 0.8%-6.7%) in TODAY. Twenty-three percent of Teen-LABS participants required a subsequent operation during the 2-year follow-up. Conclusions and Relevance: Compared with medical therapy, surgical treatment of severely obese adolescents with type 2 diabetes was associated with better glycemic control, reduced weight, and improvement of other comorbidities. These data support the need for a well-designed, prospective controlled study to define the role of surgery for adolescents with type 2 diabetes, including health and surgical outcomes.


Assuntos
Cirurgia Bariátrica/métodos , Diabetes Mellitus Tipo 2/terapia , Obesidade Mórbida/cirurgia , Adolescente , Antropometria/métodos , Glicemia/metabolismo , Índice de Massa Corporal , Criança , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/etiologia , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Hipoglicemiantes/uso terapêutico , Estudos Longitudinais , Masculino , Metformina/uso terapêutico , Obesidade Mórbida/sangue , Obesidade Mórbida/complicações
3.
Obesity (Silver Spring) ; 23(7): 1357-61, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26047470

RESUMO

OBJECTIVE: To examine the prevalence of metabolic syndrome (MetS) in youth-onset type 2 diabetes in the Treatment Options for Type 2 Diabetes in Adolescents and Youth (TODAY) study. METHODS: Prevalence of MetS (ATP III definition) was compared at baseline (n = 679) and at 6 (n = 625) and 24 months (n = 545) using chi-square tests. Laboratory data were examined between MetS classifications at each time point using ANOVA. RESULTS: Baseline prevalence of MetS was 75.8% and did not differ by treatment group or change over time. MetS was more common in females (83.1%) than males (62.3%; P < 0.0001) at baseline; this difference persisted over 24 months. Prevalence of MetS was similar between ethnic groups at baseline but greater in Hispanics (82.7%) vs. non-Hispanic Whites (67.5%; P = 0.0017) and non-Hispanic Blacks (72.7%; P = 0.0164) at 24 months. Although MetS was common in participants with hemoglobin A1c < 7.0% (74.4% at baseline; no significant change over 24 months), it was more common in those who did not maintain glycemic control at 6 months (80.3%; P = 0.0081). Elevated C-reactive protein, ALT, IL-6, and PAI-1 levels were more frequent with MetS. CONCLUSIONS: Persistent high prevalence of MetS in youth-onset diabetes, even with excellent glycemic control, is of concern given the associated increased cardiovascular risk.


Assuntos
Glicemia/metabolismo , Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus Tipo 2/etnologia , Síndrome Metabólica/epidemiologia , Adolescente , Negro ou Afro-Americano , População Negra , Doenças Cardiovasculares/sangue , Diabetes Mellitus Tipo 2/sangue , Feminino , Hispânico ou Latino , Humanos , Masculino , Síndrome Metabólica/sangue , Prevalência , Fatores de Risco , População Branca , Adulto Jovem
6.
J Clin Endocrinol Metab ; 93(1): 182-9, 2008 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18000096

RESUMO

CONTEXT: We report herein a remarkable family in which the mother of a woman with 46,XY complete gonadal dysgenesis was found to have a 46,XY karyotype in peripheral lymphocytes, mosaicism in cultured skin fibroblasts (80% 46,XY and 20% 45,X) and a predominantly 46,XY karyotype in the ovary (93% 46,XY and 6% 45,X). PATIENTS: A 46,XY mother who developed as a normal woman underwent spontaneous puberty, reached menarche, menstruated regularly, experienced two unassisted pregnancies, and gave birth to a 46,XY daughter with complete gonadal dysgenesis. RESULTS: Evaluation of the Y chromosome in the daughter and both parents revealed that the daughter inherited her Y chromosome from her father. Molecular analysis of the genes SOX9, SF1, DMRT1, DMRT3, TSPYL, BPESC1, DHH, WNT4, SRY, and DAX1 revealed normal male coding sequences in both the mother and daughter. An extensive family pedigree across four generations revealed multiple other family members with ambiguous genitalia and infertility in both phenotypic males and females, and the mode of inheritance of the phenotype was strongly suggestive of X-linkage. CONCLUSIONS: The range of phenotypes observed in this unique family suggests that there may be transmission of a mutation in a novel sex-determining gene or in a gene that predisposes to chromosomal mosaicism.


Assuntos
Fertilidade/genética , Disgenesia Gonadal 46 XY/genética , Adolescente , DNA/química , DNA/genética , Feminino , Fertilidade/fisiologia , Humanos , Cariotipagem , Masculino , Pessoa de Meia-Idade , Linhagem , Reação em Cadeia da Polimerase , Análise de Sequência de DNA
7.
J Clin Endocrinol Metab ; 91(4): 1275-83, 2006 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-16449341

RESUMO

CONTEXT: We determined the relationship of metabolic syndrome (MBS) to polycystic ovary syndrome (PCOS). OBJECTIVE: We tested the hypothesis that parental MBS is related to the PCOS phenotype in their offspring. DESIGN/SETTING: We phenotyped for MBS and PCOS in our General Clinical Research Center. PATIENTS: Girls with PCOS, 12-19 yr old (n = 36, including one pair of siblings), and their parents (35 mothers, 19 fathers) were recruited from the Pediatric Endocrinology Clinic. Healthy girls, 12-19 yr old (n = 21), were recruited as a reference population. INTERVENTIONS: We measured anthropometrics, blood pressure, fasting lipids and androgens, oral glucose tolerance, and ultrasonographically determined polycystic ovary status. MAIN OUTCOME MEASURES: MBS in parents, and PCOS features in mothers, were related to the presence of PCOS features in probands. RESULTS: Fathers had strikingly high prevalence of excess adiposity (94% were obese or overweight) and MBS (79%). Premenopausal mothers more commonly had MBS (36%) than features of PCOS (< or =22%). Polycystic ovaries in proband offspring of premenopausal mothers were associated with maternal polycystic ovaries only in a minority of cases. Proband polycystic ovary status was completely concordant to fathers' MBS status (P = 0.008), but not their own or their mothers' MBS status, in families whose premenopausal mothers lacked polycystic ovaries. Proband prevalence of MBS was 27.8%, 3-fold greater than expected for obesity status. CONCLUSION: Familial factors related to paternal MBS seem to be fundamental to the pathogenesis of PCOS.


Assuntos
Síndrome Metabólica/epidemiologia , Síndrome do Ovário Policístico/epidemiologia , Adolescente , Adulto , Androgênios/sangue , Antropometria , Pressão Sanguínea/fisiologia , Criança , Dislipidemias/epidemiologia , Pai , Feminino , Teste de Tolerância a Glucose , Humanos , Resistência à Insulina , Metabolismo dos Lipídeos/fisiologia , Masculino , Síndrome Metabólica/metabolismo , Síndrome Metabólica/fisiopatologia , Pessoa de Meia-Idade , Obesidade/epidemiologia , Pais , Fenótipo , Síndrome do Ovário Policístico/metabolismo , Síndrome do Ovário Policístico/fisiopatologia
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