Endocrine Abstracts

Through its circadian pattern of melatonin (MT) secretion, the pineal gland helps to keep the internal physiology of animals in synchrony with the day-night cycle and with the annually changing seasons.Currently, however, the influence of MT on the human reproductive axis appears to be marginal and the available evidence supporting its physiological role is largely circumstantial; there is no clear consensus whether MT levels change during the menstrual ...

Human adipose tissue provides abundant source of mesenchymal stem cells, which can be easily and safely harvested as compared with human bone marrow.The aim of this study was to differentiate a viable osteoblast and adipocyte cell culture from mesenchymal stem cells, an experimental model to study the interrelation between adipocytes and bone forming cells, osteoblasts.Materials and methods: Subcutaneous adipose tissue liposuction ...

We present an experimental study on human prolactinoma in cell culture from a patient that partially responded to cabergoline treatment and had to have surgical treatment.Aim: The aim of the study was to assess the effect of cabergoline, dopamine and melatonin on prolactin secretion and cell proliferation in human prolactinoma cell culture from a patient that had transsphenoidal surgery.Material and methods: Tissue specimen derived...

The physiological and neuroendocrine functions of the pineal gland hormone, melatonin and its therapeutic potential critically depend on the understanding of its target sites and its mechanism of action. There is evidence that melatonin promoted osteoblast differentiation and mineralization in MC3T3-E1 (mouse preosteoblast) and rat osteoblast-like osteosarcoma 17/2.8 cells. Our group set up an experimental model of mouse osteoblast culture. As a marker specific for osteoblast ...

Background: Genetic variants of the endothelial nitric oxide synthase (eNOS) gene have been reported to be associated with vascular disease. We hypothesized that G894T polymorphism might trigger many of the endocrine-metabolic cognitive changes related to aging.Study design: One hundred and eighty subjects aged 55–80+ years with moderately cognitive impairment (MCI) (MMSE<28) (lot 1), 140 age-matched subjects without cognitive impairment (MMSE&#...

Obesity was considered to be a protective condition against osteoporosis. New studies suggest that visceral obesity is associated with low BMD and a higher risk for fracture. Patients with diabetes mellitus, although they do not have a lower BMD, have a higher fracture risk, probably due to the lower bone turn over.Aim: The aim of the study was to evaluate bone metabolism in connection with hormonal profile in postmenopausal women with metabolic syndrome...

Menopause is a physiological condition associated with an important change in the hormonal status, an adverse lipid profile and cardiovascular risk. Apolipoproteins are proteins that bind to lipids to transport them. Apolipoprotein intestine synthesis is regulated principally by the fat content of the diet, while in the liver by dietary composition, hormones, alcohol intake and lipid lowering drugs. Are they changed due to aging? Do they interfere in the hormonal changes?<...