Publications by authors named "Ana Claudia Couto-Silva"

Background: Despite the number of reported data concerning idiopathic central precocious puberty (CPP) in girls, major questions remain including its diagnosis, factors, and indications of gonadotropin releasing hormone (GnRH) analog treatment.

Methods: A retrospective, single-center study was carried out on 493 girls with CPP.

Results: Eleven girls (2.

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Objective: To evaluate whether analyses of clinical and endocrine presenting symptoms could help to shorten the time to diagnosis of hypothalamic-pituitary lesions in children.

Study Design: A retrospective, single-center, cohort study of 176 patients (93 boys), aged 6 years (range, 0.2-18 years), with hypothalamic-pituitary lesions was performed.

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Background: There are no absolute criteria for identifying those girls with idiopathic central precocious puberty (CPP) who will benefit from gonadotropin-releasing hormone analog (GnRHa) treatment. Our objective was to predict at initial evaluation the differences between adult height (AH) and target height (TH) and (for untreated girls) the time between puberty onset and first menstruation.

Material/methods: The 122 girls with CPP who reached their AH included 70 who were given GnRHa because their predicted AH was <155 cm (n=24), their luteinising hormone (LH)/follicle-stimulating hormone peaks (FSH) ratio was >0.

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Background: It is difficult to predict the reproductive capacity of children given hematopoietic cell transplantation (HCT) before pubertal age because the plasma concentrations of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are not informative and no spermogram can be done.

Methods: We classified the gonadal function of 38 boys and 34 girls given HCT during childhood who had reached pubertal age according to their pubertal development and FSH and LH and compared this to their plasma inhibin B and anti-Müllerian hormone (AMH).

Results: Ten (26%) boys had normal testicular function, 16 (42%) had isolated tubular failure and 12 (32%) also had Leydig cell failure.

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Background: Inhibin B and antimüllerian hormone (AMH) are secreted by the Sertoli cells, stimulated by gonadotropins. We evaluated their use for discriminating between congenital hypogonadotropic hypogonadism (HH) and constitutional pubertal delay.

Material/methods: Group 1 (n=39) was diagnosed with constitutional pubertal delay; group 2 (n=15), isolated HH; and group 3, pituitary stalk interruption syndrome (3a with [n=5] and 3b [n=8] without HH).

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Background: It is sometimes difficult to distinguish between premature thelarche and precocious puberty in girls who develop breasts before the age of 8 years. We evaluated the frequencies of the signs associated with breast development and the factors influencing the presentation of girls with idiopathic central precocious puberty (CPP).

Methods: 353 girls monitored 0.

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Objective: To evaluate the influence of the type and treatment of CNS lesion causing central precocious puberty (CPP) on the presentation, hypothalamic-pituitary function and final height.

Patients: One hundred patients with CPP caused by central nervous system (CNS) lesion.

Results: The CPP was the presenting symptom of the lesion in 25 (10 boys) and occurred in 75 patients (23 boys) previously treated for lesions.

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Data on dyslipidemia in type 1 diabetes is scarce. The authors aimed to evaluate the lipid profile in patients with type 1 diabetes and its correlation to glycemic control. Ninety-four subjects (53.

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Radiotherapy may result in endocrine abnormalities, osteoporosis, obesity and neurological sequelae in patients treated for cancer. In the hypothalamo-pituitary area, GH deficiency is the most frequent complication. The frequency, delay of appearance and severity of GH deficiency depend most on the dose delivered during cranial irradiation but variables as age at treatment and fractionation schedule may play an important role as well.

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Introduction: Although the therapeutic effects of GnRH analogues (GnRHa) in central precocious puberty (CPP) have been established, clinical aspects may vary according to racial groups.

Objective And Methods: To describe the profile of 175 girls from Bahia, Brazil, treated with GnRHa for idiopathic CPP.

Results: The mulatto racial group predominated in the sample.

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