نتایج جستجو برای: thyroid hormones
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This chapter reviews the pathophysiology, clinical manifestations, diagnosis and treatment of hyperthyroidism. Hyperthyroidism has multiple and often dramatic clinical manifestations because thyroid hormones control the basal metabolic rate, affect cardiovascular function by increasing the sensitivity of beta-receptors to catecholamines, and profoundly influence growth, sexual maturation, and n...
The thyroid hormone, triiodothyronine, has been shown to be bound by the intranuclear chromatin protein associated with active DNA, where it is believed to stimulate transcription. Evidence exists that the thyroid hormones have direct action not only on nuclei, but also on mitochondria. Threfore, specific proteins that bind thyroid hormones in the mitochondria should be demonstrable. Mitochondr...
The identification and sequencing of the ob gene and its product, leptin, in 1994 opened new insights in the study of the mechanisms controlling body weight and led to a surge of research activity. Since its discovery, leptin has been the subject of an enormous amount of work especially within the fields of nutrition, metabolism and endocrinology. Leptin is accepted as an adipose signal, and ev...
Thyroid disorder is a general term representing several different diseases involving thyroid hormones and the thyroid gland. Thyroid disorders are commonly separated into two major categories, hyperthyroidism and hypothyroidism, depending on whether serum thyroid hormone levels (T4 and T3) are increased or decreased, respectively. Thyroid disease generally may be sub-classified based on etiolog...
objective to determine the changes in thyroid function tests in children who underwent antiepileptic therapy in shahid beheshti hospital, kashan, in 2008. materials & methods this analytical-observational study was carried out in a cohort fashion without an external control group (self controlled) on 45 children with new onset epilepsy who had not been previously treated with antiepileptic medi...
Introduction: Heat-related diseases are common disorders in many industries. Heat stress can cause changes in the secretion of some plasma hormones. The aim of this study was to determine the effects of heat stress on concentrations of serum triiodothyronine (T3) and thyroxine (T4) hormones among foundry workers. Methods: This cross sectional study was carried out with 35 workers of a foundr...
Introduction: Foods including soy and dietary supplements are widely used for health benefits, particularly by menopausal women. Serum levels of T3 and T4 decrease in ovariectomized animals and on the other hand, Estradiol can increase levels of thyroid hormones. Therefore, the aim of this study was to examine the effects of soy extract on the thyroid hormones in ovariectomized rats. Methods:...
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