Endocrine Abstracts

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Background: An increasing amount of biomedical data is becoming available, and methods are needed to tackle these “big data”.Methods: We performed a systematic evaluation of 138 environmental and behavioral factors in relation to bone mineral density (BMD) in the National Health and Nutrition Examination Survey (NHANES). Dual energy X-ray absorptiometry (DXA) scans were available for total body, head, pelvis and lumbar spine for 27,259 particip...

The LH receptor is a member of the large receptor family of GTP-binding protein coupled receptors. Mutations in the LH receptor gene cause severe sex hormone-related disease, ranging from very early precocious puberty in boys (activating mutation) to slight undervirilization, severe hypospadias or complete 46XY pseudohermaphroditism (inactivating mutation). Thus, LH receptor gene mutations have profound effects on sex hormone production and on physiology of patients. In additi...

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...

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...