Endocrine Abstracts

Introduction: Polycystic ovary syndrome (PCOS), the most common endocrine disorder in women of reproductive age, is diagnosed based on three criteria, including a polycystic ovarian morphology. Moreover, women with PCOS have elevated serum Anti-Müllerian Hormone (AMH) levels, a hormone known to correlate with follicle number. In addition, AMH production per follicle is suggested to be higher in PCOS. Little is known about AMH gene regulation. Hence, this study aims to inv...

Introduction: Recent studies suggest that mild hyponatremia is associated with fractures, but prospective studies are lacking.Aim: Our aim was to study whether hyponatremia is associated with fractures, falls and/or bone mineral density (BMD).Methods: Five thousand two hundred and eight elderly men and women with serum sodium assessed at baseline were included from the prospective, population-based Rotterdam Study. The following da...

Polycystic ovary syndrome (PCOS) is characterized by anovulation, hyperandrogenemia, and polycystic ovaries. Although the etiology of PCOS is poorly understood, the common denominator is a disturbance in the selection of the dominant follicle. TGFβ family members, such as anti-Müllerian hormone (AMH) and bone morphogenetic proteins (BMPs), suppress FSH sensitivity. Therefore their signaling pathway may contribute to the aberrant follicle development in PCOS women. We...

Polycystic ovary syndrome (PCOS) is characterized by anovulation, elevated levels of circulating androgens and polycystic ovaries. Although the etiology of PCOS is poorly understood, the common denominator is a disturbance in the selection of the dominant follicle. In PCOS women serum Anti-Müllerian Hormone (AMH) levels are elevated. Since AMH reduces FSH sensitivity of growing follicles, the elevated AMH levels in PCOS patients may contribute to the disturbed follicle se...

Objective: A cytosine-adenine (CA)n microsatellite repeat polymorphism in the promoter region of the insulin-like growth factor-1 (IGF-1) gene has reported to be associated with IGF-1 serum levels, birth weight, body height, bone mineral density and risk for type 2 diabetes and myocardial infarction. Carriers and non-carriers of the most frequent allele (length 192 base pairs (bp)) showed significantly different total IGF-1 serum levels. This polymorphism may direct...

Risk for vertebral fractures (VFx), the most common osteoporotic fractures, is a heritable complex trait. No genome-wide association studies (GWAS) searching for genetic susceptibility factors for VFx have been reported. We performed a GWAS for VFx in a population-based study of Dutch elderly. Thoracolumbar spine radiographs were scored for osteoporotic VFx using the McCloskey/Kanis method. Genetic data was available in 329 VFx cases and 2666 controls. We tested 2 543 887 impu...