Thyroid hormones: a potential ally to LDL-cholesterol-lowering agents

Leonidas H. Duntas, Gabriela Brenta

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L-thyroxine (LT4) treatment of hypothyroidism, particularly in patients with thyroid- stimulating hormone (TSH) >10mU/L, results in improved lipid profile, as LT4 stimulates low-density lipoprotein cholesterol (LDL-C) degradation and the conversion of cholesterol in bile acids by inducing LDL-receptor and 7 alpha hydroxylase expression …

TSH and thyroid hormones concentrations in patients with hypothyroidism receiving replacement therapy with L-thyroxine alone or in combination with L-triiodothyronine

Valentin V. Fadeyev, Tatiana B. Morgunova, Julia P. Sytch, Galina A. Melnichenko

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The aim of this study was to evaluate parameters of thyroid function in patients with primary hypothyroidism receiving either monotherapy with L-T4 or combination L-T4+L-T3. Fifty-eight women with primary hypothyroidism receiving L-T4 were enrolled in the study. The patients were randomised into two groups: Group 1 (n=42) patients continued monotherapy with L-T4, and Group 2 …

Normalization of thyroid hormone levels in patients with either hyper- or hypothyroidism results in a profound change of atrial natriuretic peptide (ANP) levels

George Koukoulis, Antonis Polymeris, Ioanna Tzavara, Dimitrios Pappas, Nicke Thalassinos

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Atrial Natriuretic Peptide (ANP) is a hormone produced by cardiac atrial myocytes. Thyroid hormones may affect its release. The aim of this study was to analyze the effect of hyper and hypothyroidism on the secretion of ANP and its relationship with the changes of the renin-angiotensin-aldosterone system. Plasma ANP concentration as well as plasma renin activity (PRA) and aldosterone …

Effect of Restoration of Euthyroidism on Peripheral Blood Cells and Erythropoietin in Women with Subclinical Hypothyroidism

Mirjam Christ-Crain, Christian Meier, Peter Huber, Henryk Zulewski, Jean-Jacques Staub, Beat Müller

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Background: In overt hypothyroidism (OH) anemia is common, while less frequently basophilia has been described. In subclinical hypothyroidism (SCH), however, data on the distribution of peripheral blood cells are lacking. Therefore, we evaluated the effects of L-T4 replacement therapy on peripheral blood elements in female patients with SCH before and after restoration …