Duplication of SOX9 associated with 46,XX ovotesticular disorder of sex development.

Research Question: The purpose of the present study was to investigate whether ten unrelated SRY-negative individuals with this sex differentiation disorder presented a double dose of SOX9 as the cause of their disease.

Design: Ten unrelated SRY-negative 46,XX ovotesticular disorder of sexual development (DSD) subjects were molecularly studied. Multiplex-ligation dependent probe amplification (MLPA) and quantitative real-time PCR analysis (qRT-PCR) for SOX9 were performed.

Complete sequence of the ATP6 and ND3 mitochondrial genes in breast cancer tissue of postmenopausal women with different body mass indexes.

Due to the fact that mitochondrial defects and oxidative stress have been related with obesity and breast cancer is more aggressive in women with obesity, we investigated if postmenopausal Mexican-Mestizo women with breast cancer presented somatic mutations in the sequence of the ATP6 and/or ND3 genes. Twenty one postmenopausal Mexican-Mestizo women with breast cancer who underwent mastectomy or breast conserving surgery were studied. Height and weight were used to calculate body mass index.

PPARGC1A and ADIPOQ polymorphisms are associated with aggressive prostate cancer in Mexican-Mestizo men with overweight or obesity.

Background: Obesity constitutes a risk factor for the development of aggressive forms of prostate cancer. It has been proposed, that prostate cancer has a genetic predisposition and that PPARGC1A and ADIPOQ polymorphisms play a role in the development of this condition.

Objective: To analyse the association of two PPARGC1A and ADIPOQ polymorphisms as well as their haplotypes, with the development of aggressive prostate cancer in Mexican-Mestizo men with overweight or obesity.

Genetic variants in ATP6 and ND3 mitochondrial genes are not associated with aggressive prostate cancer in Mexican-Mestizo men with overweight or obesity.

Mitochondrial defects have been related to obesity and prostate cancer. We investigated if Mexican-Mestizo men presenting this type of cancer, exhibited somatic mutations of ATP6 and/or ND3.Body mass index (BMI) was determined; the degree of prostate cancer aggressiveness was demarcated by the Gleason score.

[Prenatal exclusion of von Hippel-Lindau syndrome in a Mexican family carrying a novel VHL gene mutation].

Background: von Hippel-Lindau (VHL) disease is an autosomal dominant and familial multisystemic syndrome that is caused by the inactivation of the VHL gene and it is characterized by diverse types of high vasculated tumours of benign and malign nature. In this work we describe the clinical characteristics and the prenatal diagnosis of a woman with VHL.

Objective: Describe the first exclusion prenatal case by DNA analysis of the VHL syndrome in Latinoamerican population.

In vitro and molecular modeling analysis of two mutant desert hedgehog proteins associated with 46,XY gonadal dysgenesis.

Mutations of Desert hedgehog (DHH) have been associated to 46,XY pure gonadal dysgenesis (PGD) and to mixed gonadal dysgenesis (MGD); however, there have been no functional studies of mutations described in DHH. To determine if mutations p.L162P and Δ1086delG yield functional impairment, we performed in vitro and in silico analysis of both DHH mutants.

[Prenatal exclusion of von Hippel-Lindau syndrome in a Mexican family carrying a novel VHL gene mutation].

Von Hippel-Lindau syndrome is an autosomal dominant and familial multisystemic syndrome that is caused by the inactivation of the VHL gene and it is characterized by diverse types of high vasculated tumors of benign and malign nature. This paper reports the clinical characteristics and prenatal diagnosis of a woman with von Hippel-Lindau syndrome, who constitutes the first exclusion prenatal case by DNA analysis of the Von Hippel-Lindau syndrome in Latin-American population.