Prevalência do gene TSPY em pacientes com anomalias do desenvolvimento sexual no Pará

Abstract

Patients with disorders of sexual differentiation (DDS) present higher risk of neoplasies. The most common neoplastic changes in these patients are: the gonadoblastoma, carcinomain situ and cell germ tumors of intra-tubular unclassified. The type II germ cells are precursors these lesions in most cases. The gonadoblastoma is a benign tumor that no metastasizes, but the high prevalence and risk of progression to malignant forms of gonadal neoplasms, deserves special attention. In a close to the centromere on the short arm of the Y chromosome region, the TSPY gene was isolated, counted as the gonadoblastoma gene. Expressed in large amounts in cells that constitute the gonadoblastoma. DDS 47 patients were evaluated in their karyotypes and research investigated the prevalence of TSPY PCR. The analysis reveled that 50% of patients with Turner syndrome, even without the Y chromosome, righteous or not, evident in the karyotype, were positive for the presence of the TSPY gene. Evidencing the importance of the gene in the monitoring and guidance of gonadectomy in patients with DDS.