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Full-Text Articles in Medicine and Health Sciences
Membrane Cholesterol Content Modulates Activation Of Volume-Regulated Anion Current In Bovine Endothelial Cells., I Levitan, A E Christian, T N Tulenko, G H Rothblat
Membrane Cholesterol Content Modulates Activation Of Volume-Regulated Anion Current In Bovine Endothelial Cells., I Levitan, A E Christian, T N Tulenko, G H Rothblat
Department of Biochemistry and Molecular Biology Faculty Papers
Activation of volume-regulated anion current (VRAC) plays a key role in the maintenance of cellular volume homeostasis. The mechanisms, however, that regulate VRAC activity are not fully understood. We have examined whether VRAC activation is modulated by the cholesterol content of the membrane bilayer. The cholesterol content of bovine aortic endothelial cells was increased by two independent methods: (a) exposure to a methyl-beta-cyclodextrin saturated with cholesterol, or (b) exposure to cholesterol-enriched lipid dispersions. Enrichment of bovine aortic endothelial cells with cholesterol resulted in a suppression of VRAC activation in response to a mild osmotic gradient, but not to a strong …
Histopathological Effects Of Cholesterol And Protective Effects Of Vitamin E And Selenium On The Morphology Of Liver, Süheyla Gonca, Süreyya Ceylan, Melda Yardimoğlu, Hakki Dalçik, Si̇bel Köktürk, Serdar Fi̇li̇z, Zuhal Yumbul
Histopathological Effects Of Cholesterol And Protective Effects Of Vitamin E And Selenium On The Morphology Of Liver, Süheyla Gonca, Süreyya Ceylan, Melda Yardimoğlu, Hakki Dalçik, Si̇bel Köktürk, Serdar Fi̇li̇z, Zuhal Yumbul
Turkish Journal of Medical Sciences
In this study, effects of cholesterol and protective effects of vitamin E (vit E) and Selenium (Se) on the morphology of the liver in rats were observed. Cholesterol (Chol) supplemented diet, Chol + vit E, Chol + Se and Chol + vit E + Se were applied to the rats. Portal fibrosis with bile ductal proliferation and an increased inflammatory infiltration were seen in Chol group. In this group, ultrastructurally, granular endoplasmic reticulum (GER) arrangement was seen in irregular shape in hepatocyte cytoplasm. The membranes of GER and mitochondria were not seen clearly. A morphological improvement was seen in the …