The function of the thyroid gland is to synthesize the thyroid hormones thyroxine (T4) and triiodothyronine (T3). Thyroid cells are the only cells in the body that can absorb the element iodine, which can be found in many foods. These cells combine iodine and the amino acid, tyrosine, to produce T3 and T4. The T3 and T4 hormones are then released into the bloodstream and are transported through...

This study was conducted to examine the effects of thyme extract and probiotic on biological growth promoters. Therefore blood thyroid hormones (T3 and T4) concentration and growth hormone (GH) gene expression were measured. 108 one-day-old Ross male broiler were randomly allocated in 3 experimental treatments including: controlunsupplemented (CTRL), birds supplemented with Zataria multiflora e...

1. The effects of Concanavalin A (Con A) on enzymes from the intestinal brush border were studied using membrane vesicles (BBMV) prepared from 3- and 6-week-old broiler chickens. 2. Maltase, sucrase, phytase, alkaline phosphatase and leucine aminopeptidase activities were assayed in BBMV in the absence (T0) or presence (T1) of Con A, or in the presence of casein (T2). Disaccharidase specific ac...

Introduction: Neuropeptide Y (NPY) is the most abundant peptide present in mammals' brains. The majority of NPY-producing neurons is in arcuate and paraventricular nuclei of hypothalamus which affect hypophysiotrapic factors secretion. In this study we investigated the effect of intravenous injections of various doses of NPY on thyroxine (T4) and triiodothyronine (T3) serum concentrations. ...

BACKGROUND Little is known about changes in thyroid function in obese children. An influence of leptin on thyroid hormone synthesis has been proposed. AIMS To examine thyroid function and leptin concentrations in obese children. METHODS Triiodothyronine (T3), thyroxine (T4), thyroid stimulating hormone (TSH), and leptin were measured in 118 obese children (aged 4.5-16 years); thyroid functi...

Serum concentrations of thyroxine (T4), triiodothyronine (T3) and Thyroid Stimulating Hormone (TSH) are used to assess thyroid function. It is recommended that each laboratory or hospital should establish its own reference values of T4, T3 and TSH for their clients because these hormones vary with ethnicity, geographical and climatic conditions of a population. There is no documented study whic...

an experiment was conducted to study the effects of carbon tetrachloride (ccl4) on post-peak performance and serum enzymes of hy-line w-36 laying hens from 32-36 weeks of age. the experiment was carried out with a total of 192 laying hens in a completely randomized block design. during the experiment laying hens were allocated to 4 groups consisted of t1) no ccl4 as control diet, t2, t3 and t4)...

traumatic brain injury (tbi) is an important cause of death and disability in young adults ,and may lead to physical disabilities and long-term cognitive, behavioral psychological and social defects. there is a lack of definite result about the effect of thyroid hormones after traumatic brain injury in the severity and no data about their effect on mortality of the injury. the aim of this study...

although there are many evidences regard to the relationship between serum thyroid hormones, cholesterol, triglyceride and lipoproteins in different animals, but there are limited references in dogs. the aim of this study was to determine the correlation between thyroid hormones and concentrations of serum lipid and lipoprotein profiles, and also to detect relationship between the measured para...