Diagnosis of 5 alpha-reductase type 2 deficiency: Contribution of anti-Mullerian hormone evaluation
Nenhuma Miniatura disponível
Data
2005-01-01
Autores
Stuchi-Perez, E. G.
Hackel, C.
Oliveira, LEC
Ferraz, LFC
Oliveira, L. C.
Nunes-Silva, D.
Toralles, M. B.
Steinmetz, L.
Damiani, D.
Maciel-Guerra, A. T.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Walter De Gruyter Gmbh
Resumo
Aim: To evaluate anti-Mullerian hormone (AMH) levels in patients with clinical and molecular diagnosis of 5 alpha-reductase 2 deficiency. Patients and Methods: Data from 14 patients whose age ranged from 21 days to 29 years were analyzed according to age and pubertal stage. Sexual ambiguity was rated as Prader III in 11 patients. LH, FSH, testosterone (T), dihydrotestosterone (DHT) and AMH serum levels were measured in all but two patients, who had been previously submitted to gonadectomy; T and DHT were also measured in 20 age-matched controls. Results: Gonadotropin levels were normal in all but one patient who retained gonads (six of whom had reached puberty) and T/DHT ratio was elevated in all patients when compared to controls. All prepubertal patients had AMH levels < -1 SD for age, while most pubertal patients had AMH levels compatible with pubertal stage. Conclusions: Prepubertal patients with 5 alpha-reductase 2 deficiency have AMH values in the lower part of the normal range. These data indicate that T does not need to be converted to DHT to inhibit AMH secretion by Sertoli cells.
Descrição
Palavras-chave
androgen insensitivity syndrome, Mullerian inhibiting hormone, dihydrotestosterone, pseudohermaphroditism, testosterone, 5 alpha-reductase
Como citar
Journal Of Pediatric Endocrinology & Metabolism. Berlin: Walter De Gruyter Gmbh, v. 18, n. 12, p. 1383-1389, 2005.