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- W2098161092 abstract "Diabetes is a major independent risk factor for cardiovascular disease and stroke; however, the molecular and cellular mechanisms by which diabetes contributes to the development of vascular disease are not fully understood. Our previous studies demonstrated that endoplasmic reticulum (ER) stress–inducing agents, including homocysteine, promote lipid accumulation and activate inflammatory pathways—the hallmark features of atherosclerosis. We hypothesize that the accumulation of intracellular glucosamine observed in diabetes may also promote atherogenesis via a mechanism that involves ER stress. In support of this theory, we demonstrate that glucosamine can induce ER stress in cell types relevant to the development of atherosclerosis, including human aortic smooth muscle cells, monocytes, and hepatocytes. Furthermore, we show that glucosamine-induced ER stress dysregulates lipid metabolism, leading to the accumulation of cholesterol in cultured cells. To examine the relevance of the ER stress pathway in vivo, we used a streptozotocin-induced hyperglycemic apolipoprotein E–deficient mouse model of atherosclerosis. Using molecular biological and histological techniques, we show that hyperglycemia is associated with tissue-specific ER stress, hepatic steatosis, and accelerated atherosclerosis. This novel mechanism may not only explain how diabetes and hyperglycemia promote atherosclerosis, but also provide a potential new target for therapeutic intervention." @default.
- W2098161092 created "2016-06-24" @default.
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- W2098161092 date "2006-01-01" @default.
- W2098161092 modified "2023-10-13" @default.
- W2098161092 title "Glucosamine-Induced Endoplasmic Reticulum Dysfunction Is Associated With Accelerated Atherosclerosis in a Hyperglycemic Mouse Model" @default.
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- W2098161092 doi "https://doi.org/10.2337/diabetes.55.01.06.db05-0633" @default.
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