Endocrine Abstracts

The Liver X Receptor (LXR) agonists have been shown to influence the development of hyperlipidemia and atherosclerosis in mouse models. It has also been demonstrated that some LXR agonists can cause hepatic steatosis in experimental animals. GH is also known to regulate hepatic metabolism and absence of the hepatic GH receptors leads to hepatic steatosis. In this study we analyzed whether actions of LXR agonists could involve interference with GH signaling. We showed that LXR ...

Introduction: Mechanism underlying glucose-mediated development and progression of diabetic complication are incompletely understood. Atrial natriuretic peptide (ANP) is a hormone released by atrial myocytes in response to acute and chronic extracellular volume expansion. Moderate hyperglycaemia (>400 mg/dl) in diabetic rats is associated with an elevation in circulating ANP levels and in GFR (glomerular filtration rate), (1) and play a role in the development of microalbu...

Already a long time ago, the subtle adaptability of the reproductive endocrine system made it possible to elaborate a hormonal castration method for female pigs, which was based on the administration of a high-dose oestrogen (diethylstilboestrol) injection. The phenomenon was believed to be the result of a negative feedback reaction. However, this theory could not explain why more than 20% of the animals treated did not respond properly to the treatment. Therefore, the goal of...

One in 11 women develop breast cancer before the age of 75, and mortality is significant. Estrogens and progesterone (PROG) are mediators of breast cancer aetiology and progression, and are targets for both diagnostics and therapy. The actions of estrogens via estrogen receptor alpha (ERα) have been extensively studied, but the genomic actions of PROG via the progesterone receptor (PGR) are still not fully understood. This study investigates the genomic actions of PGR in ...

Introduction: Trisomy 21 is often associated with congenital malformation and metabolic abnormalities such as glucose intolerance and an increased risk of developing diabetes mellitus.Aim: The aim of this study was to assess carbohydrate metabolism in children with Down syndrome.Material and methods: Thirty nine children with Down syndrome, aged between 2 months and 16 years (mean 6.5 years), took part in the study. Glycaemia befor...

Autoimmune Addison’s disease (AAD) is an endocrine disease resulting from the immune system’s destruction of hormone producing cells in the adrenal cortex. Autoantibodies against the steroidogenic enzyme 21-hydroxylase (21OH) is the hallmark of this form, and found in about 85 percent of patients in European populations. Risk factors are both genetic and presumably environmental. Genes associated with AAD are MHC class II especially the DR locus, MHC class I and MIC-...

Objective: The purpose of this study was to investigate the 25-hydroxyvitamin (25(OH)D3) levels in general population.Introduction: Vitamin D is important for normal bone health. Vitamin D deficiency is a well-known cause of rickets in children and osteomalacia in adults, and it is also of importance for development of osteoporosis. Beyond this, vitamin D deficiency is suggested as a contributing factor in the development of several other diseases and co...

Introduction: The aim of our experimental study was to investigate the effect of both T2DM and metformin treatment on myocardial tolerance to ischemia-reperfusion injury and cardiac AMP-activated protein kinase (AMPK) activity.Methods: The protocol included four groups: i) controls (n=13) – non-diabetic rats treated with i.p. vehicle injections for 3 days prior to the heart perfusion, ii) controls+metformin (CM; n=12) – non-diabet...

Introduction: There are concerns about the combined estrogenic effects of endocrine disrupting chemicals (EDCs), since mixtures of these chemicals exist in our environment. This study investigated potential synergistic interactions between bisphenol A (BPA) and isobutylparaben (IBP), which are major xenoestrogens used in the manufacture of plastics, cosmetics, drugs, and other products. The combined effects of these two chemicals were analyzed by measuring expression of calbin...

Studies into estrogen receptor alpha (ERα), progesterone receptor (PGR) and the androgen receptor (AR) involvement in breast, uterine and prostate cancers has provided considerable insight into the molecular actions these receptors, but have thus far focused on each receptor individually and alone in different cell types. Here, whole genome expression microarray analysis and ChIP-sequencing in ZR-75-1 breast cancer cells, in response to combinations of 17β-estradiol ...