The effect of exogenous thyroxine (T4) administration on the activity of rhodanese, cystathionase, and 3-mercaptopyruvate sulfurtransferase (MPST) in the mitochondrial and cytosolic fractions of mouse liver was investigated. Three groups of mice were treated for 6 consecutive days with subcutaneous injections of T4 (50 micrograms, 100 micrograms, and 250 micrograms per 100 g of body wt, respect...

Mandarin has four lexical tones and Hong Kong Cantonese has six lexical tones. The pitch pattern of T1 and T4 in Mandarin is high level and high falling. According to the results of previous research, the pitch boundary of T1 and T4 by native speakers of Mandarin is categorical. Using the synthesized disyllable real words as stimuli, this paper aims to examine the identification and discriminat...

Sixty six clinically proven hypothyroid subjects were studied using radioimmunoassay techniques for estimation of serum thyroid hormones and pituitary TSH concentrations. The mean level for serum TSH was significantly elevated while the mean levels for serum T4, 13 and Free T4 were significantly low. A significant positive correlation was found between 14 and T3 and between T4 and FTI. Serum TS...

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...

Superinfection by phage T4 of cells infected by the ribonucleic acid (RNA) phage f2 results in inhibition of further f2 production. Experiments using rifampin show that the exclusion of f2 requires T4 gene function soon after T4 infection. By using a sensitive new peptide-mapping procedure to identify f2 coat protein in infected cells, we show that synthesis of the f2 coat occurs at a reduced l...

Thyroid functions were studied in 11 patients with subacute thyroiditis accompanied by signs and symptoms of hyperthyroidism, and were compared with 13 patients with untreated thyrotoxicosis in which serum T4 was elevated to the identical level. Serum T3 was also elevated in subacute thyroiditis but to a significantly lower extent than in thyrotoxicosis. Therefore the ratio of T4/T3 was signifi...

Background: Stress has different effects on the body and endocrine system. Objectives: The main aim of this study is to determine the effects of immobilization stress and Aloe vera extract on levels of TSH, T3 or T4 in male rats. Materials and Methods: In this experimental study, 90 male Wistar rats were randomly divided into 9 groups of control, receiving normal saline, receiving Aloe vera ext...

OBJECTIVE Although the association between Down's syndrome (DS) and thyroid dysfunction is well recognized, the cause of this condition is not known. METHODS Hospital records of patients with DS and hypothyroidism referred to our clinic were retrospectively reviewed. Initial thyroid hormone and thyrotropin (TSH) levels, age at admission, initial anthropometric measurements, age at the beginni...

Objective: The present study was performed to evaluate the effects of hydro-alcoholic extract of Portulaca oleracea (P. oleracea) seeds and Vitamin C on biochemical and hemodynamic parameters in cardiac tissue of rats with subclinical hyperthyroidism. Materials and Methods: Forty eight male rats were divided into six groups of 8 and treated for 4 weeks. T4 group received daily injection of levo...