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lüll Microvascular responses to cardiovascular risk factors Granger DN; Rodrigues SF; Yildirim A; Senchenkova EYMicrocirculation 2010[Apr]; 17 (3): 192-205Hypertension, hypercholesterolemia, diabetes, and obesity are among a growing list of conditions that have been designated as major risk factors for cardiovascular disease (CVD). While CVD risk factors are well known to enhance the development of atherosclerotic lesions in large arteries, there is also evidence that the structure and function of microscopic blood vessels can be profoundly altered by these conditions. The diverse responses of the microvasculature to CVD risk factors include oxidative stress, enhanced leukocyte- and platelet-endothelial cell adhesion, impaired endothelial barrier function, altered capillary proliferation, enhanced thrombosis, and vasomotor dysfunction. Emerging evidence indicates that a low-grade systemic inflammatory response that results from risk factor-induced cell activation and cell-cell interactions may underlie the phenotypic changes induced by risk factor exposure. A consequence of the altered microvascular phenotype and systemic inflammatory response is an enhanced vulnerability of tissues to the deleterious effects of secondary oxidative and inflammatory stresses, such as ischemia and reperfusion. Future efforts to develop therapies that prevent the harmful effects of risk factor-induced inflammation should focus on the microcirculation.|Animals[MESH]|Blood Platelets/physiology[MESH]|Cardiovascular Diseases/*etiology/pathology/*physiopathology[MESH]|Cell Adhesion/physiology[MESH]|Endothelial Cells/pathology/physiology[MESH]|Humans[MESH]|Inflammation/complications/pathology/physiopathology[MESH]|Leukocytes/pathology/physiology[MESH]|Microcirculation/*physiology[MESH]|Models, Cardiovascular[MESH]|Oxidative Stress[MESH]|Reperfusion Injury/etiology/physiopathology[MESH]|Risk Factors[MESH]|Thrombosis/etiology[MESH]|Vasodilation/physiology[MESH]|Vasomotor System/physiopathology[MESH] |