The measurement of circulating hormones by immunoassay remains a cornerstone in preclinical endocrine research. For scientists conducting and interpreting immunoassay measurements of rodent samples, the paramount aim usually is to obtain reliable and meaningful measurement data in order to draw conclusions on biological processes. However, the biological variability between samples is not the o...

The recent demonstration that metabolically active brown adipose tissue (BAT) is present with a high prevalence in humans undoubtedly represents one of the major advancements in the field of metabolic research in the last few years. The increasing interest in BAT is justified by preclinical observations highlighting an important role of this tissue in energy dissipation and metabolic clearance ...

diabetes is a metabolic disorder which affects whole body systems including reproductive system. diabetes is also a contributing factor to infertility. metformin is one of the most common drugs to control hyperglycemia. in this study, 36 adult sprague-dawley female rats (170-210 g) were divided into 3 groups (control, diabetic and diabetic-treated by metformin). in second and third groups, diab...

In the religion of Islam, fasting is obligatory for healthy adults during Ramadan. Millions of Muslims around the world practice fasting in this holy month which may cause different metabolic and hormonal changes due to the restrictions in regular caloric intake. This article was aimed to review some possible effects of Ramadan fasting on the endocrine system which has a great impact on physiol...

Obesity is associated with several metabolic and endocrine disorders; and changes in plasma concentrations, secretion patterns, and clearance of various hormones are observed in obese patients. In this context, recent research has shown that overweight can influence the function of the thyroid gland, usually leading to increased thyrotropin concentrations and changes in the ratio between the ho...

Chemical derivatives of the gut-derived peptide hormone glucagon-like peptide 1 (GLP-1) are among the best-in-class pharmacotherapies to treat obesity and type 2 diabetes. However, GLP-1 analogs have modest weight lowering capacity, in the range of 5-10%, and the therapeutic window is hampered by dose-dependent side effects. Over the last few years, a new concept has emerged: combining the bene...

Objectives : The aim of this research is to examine the effects fructose-drinking on plasma levels appetite-regulating hormones insulin, leptin and ghrelin in male female rats. Methods Mature Wistar rats were divided as follows: two control groups - (CM) (CF); (FDM) (FDF), received 15% fructose solution. experiment lasted 11 weeks. At end, well lipid glucose profile assessed. Results Plasma con...

Endogenous circadian clocks regulate 24-h rhythms of behavior and physiology to align with external time. The endocrine system serves as a major clock output to regulate various biological processes. Recent findings suggest that some of the rhythmic hormones can also provide feedback to the circadian system at various levels, thus contributing to maintaining the robustness of endogenous rhythmi...