Abstract
Insulin resistance and inflammation are recognized as important links between obesity and cardiovascular disease (CVD). Plasma free fatty acids (FFA), either released from the abnormally enlarged adipose tissue or as part of the excessive nutrient intake, produce insulin resistance and inflammation. Both insulin resistance and inflammation are tightly linked to several independent CVD risk factors such as type 2 diabetes (T2DM), hypertension, dyslipidemia and disorders of blood coagulation. Several hypotheses have been proposed to explain how increased plasma FFA levels can cause insulin resistance including a) the lipid metabolite hypothesis, b) the inflammation hypothesis, c) the hyperinsulinemia hypothesis and d) the endoplasmic reticulum (ER) stress hypothesis. The latter does not require presence of elevated plasma FFA levels and thus provides a mechanism to explain the development of insulin resistance and inflammation in all obese individuals, i.e., those with and without elevated plasma FFA levels.
Hyperinsulinemia per se has been suspected to cause CVD based on epidemiologic studies which have associated chronic hyperinsulinemia with CVD without, however, establishing a cause and effect relationship. There are, however, newer results which support the hypothesis that chronic hyperinsulinemia per se can promote the development of CVD. For instance, hyperinsulinemia can activate triglyceride formation, several matrix metalloproteinases (MMP), and the tissue factor pathway of blood coagulation, all of which are known to be associated with CVD, even in the presence of “metabolic insulin resistance”.
Keywords: Obesity, cardiovascular disease, free fatty acids, insulin resistance, inflammation, endoplasmic reticulum stress, matrix metalloproteinases, blood coagulation.
Current Pharmaceutical Design
Title:Why Does Obesity Increase the Risk for Cardiovascular Disease?
Volume: 19 Issue: 32
Author(s): Guenther Boden and Sajad Salehi
Affiliation:
Keywords: Obesity, cardiovascular disease, free fatty acids, insulin resistance, inflammation, endoplasmic reticulum stress, matrix metalloproteinases, blood coagulation.
Abstract: Insulin resistance and inflammation are recognized as important links between obesity and cardiovascular disease (CVD). Plasma free fatty acids (FFA), either released from the abnormally enlarged adipose tissue or as part of the excessive nutrient intake, produce insulin resistance and inflammation. Both insulin resistance and inflammation are tightly linked to several independent CVD risk factors such as type 2 diabetes (T2DM), hypertension, dyslipidemia and disorders of blood coagulation. Several hypotheses have been proposed to explain how increased plasma FFA levels can cause insulin resistance including a) the lipid metabolite hypothesis, b) the inflammation hypothesis, c) the hyperinsulinemia hypothesis and d) the endoplasmic reticulum (ER) stress hypothesis. The latter does not require presence of elevated plasma FFA levels and thus provides a mechanism to explain the development of insulin resistance and inflammation in all obese individuals, i.e., those with and without elevated plasma FFA levels.
Hyperinsulinemia per se has been suspected to cause CVD based on epidemiologic studies which have associated chronic hyperinsulinemia with CVD without, however, establishing a cause and effect relationship. There are, however, newer results which support the hypothesis that chronic hyperinsulinemia per se can promote the development of CVD. For instance, hyperinsulinemia can activate triglyceride formation, several matrix metalloproteinases (MMP), and the tissue factor pathway of blood coagulation, all of which are known to be associated with CVD, even in the presence of “metabolic insulin resistance”.
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Cite this article as:
Boden Guenther and Salehi Sajad, Why Does Obesity Increase the Risk for Cardiovascular Disease?, Current Pharmaceutical Design 2013; 19 (32) . https://dx.doi.org/10.2174/1381612811319320003
DOI https://dx.doi.org/10.2174/1381612811319320003 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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