General Physiology and Biophysics Vol.42, No.3, p 241–250, 2023
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Title: Cholecalciferol affects cardiac proteins regulating malonyl-CoA availability and intracellular calcium level |
Author: Tamara Ivkovic, Snezana Tepavcevic, Snjezana Romic, Mojca Stojiljkovic, Milan Kostic, Jelena Stanisic, Goran Koricanac, Tijana Culafic |
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Abstract: Cholecalciferol improves insulin signaling and glucose metabolism in the heart and reduces circulating non-esterified fatty acids. Cholecalciferol effects on the cardiac fatty acid (FA) metabolism and the consequences on calcium handling were examined. Blood lipid profile was determined. Western blot and qRT-PCR were used to examine protein and mRNA expression. Cholecalciferol-treated rats had increased acetyl CoA carboxylase 2 protein expression and decreased expression of malonyl CoA decarboxylase. In addition, the expression of uncoupling protein 3 was elevated. Also, the level of peroxisome proliferator-activated receptor-gamma coactivator in the nucleus of heart cells was increased along with the level of sarcoplasmic/endoplasmic reticulum Ca2+ATPase in the microsomal fraction. In parallel, the L-type calcium channel and ryanodine receptor expression was reduced. In the heart of healthy rats, cholecalciferol affects proteins regulating malonyl CoA availability and intracellular Ca2+ handling proteins.
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Keywords: Vitamin D — Heart — Fatty acid metabolism — Calcium handling |
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Published online: 02-May-2023
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Year: 2023, Volume: 42, Issue: 3 |
Page From: 241, Page To: 250 |
doi:10.4149/gpb_2023005
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