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Thyroid hormones have an effect on every tissue of the organism because they carry out the functions of a catalyst of the oxidize reaction and the main regulator of metabolism. The thyroid hormones have an effect on the heart and cardiovascular system through β-receptors and they are synergistic with catecholamine. The excess and the deficiency of thyroid hormones in an organism is a cause of disorders...
The aim of the experiment was to evaluate the influence of oral administration of L-thyroxine on the heart. The research material included 8 pigs of the polska bia³a zwis³oucha breed. The experimental hyperthyroidism was induced by oral administration of L-thyroxine at a dose 20 µg/kg b.w. in 4 pigs. The echocardiography examination was carried out 3 times in each pig: before hyperthyroidism outset...
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