Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?

Dysfunction of macro- and microvessels is a major cause of morbidity and mortality in patients with cardio-renovascular diseases such as atherosclerosis, hypertension, and diabetes. Renal failure and impairment of renal function due to vasoconstriction of the glomerular arteriole in diabetic nephrop...

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Main Authors: Utpal Sen, Suresh C. Tyagi
Format: Article
Language:English
Published: Wiley 2010-01-01
Series:PPAR Research
Online Access:http://dx.doi.org/10.1155/2010/806538
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author Utpal Sen
Suresh C. Tyagi
author_facet Utpal Sen
Suresh C. Tyagi
author_sort Utpal Sen
collection DOAJ
description Dysfunction of macro- and microvessels is a major cause of morbidity and mortality in patients with cardio-renovascular diseases such as atherosclerosis, hypertension, and diabetes. Renal failure and impairment of renal function due to vasoconstriction of the glomerular arteriole in diabetic nephropathy leads to renal volume retention and increase in plasma homocysteine level. Homocysteine, which is a nonprotein amino acid, at elevated levels is an independent cardio-renovascular risk factor. Homocysteine induces oxidative injury of vascular endothelial cells, involved in matrix remodeling through modulation of the matrix metalloproteinase (MMP)/tissue inhibitor of metalloproteinase (TIMP) axis, and increased formation and accumulation of extracellular matrix protein, such as collagen. In heart this leads to increased endothelial-myocyte uncoupling resulting in diastolic dysfunction and hypertension. In the kidney, increased matrix accumulation in the glomerulus causes glomerulosclerosis resulting in hypofiltration, increased renal volume retention, and hypertension. PPARγ agonist reduces tissue homocysteine levels and is reported to ameliorate homocysteine-induced deleterious vascular effects in diabetes. This review, in light of current information, focuses on the beneficial effects of PPARγ agonist in homocysteine-associated hypertension and vascular remodeling in diabetes.
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spelling doaj-art-e75c50a0c557446d95a151e79ba8cbff2025-02-03T05:45:54ZengWileyPPAR Research1687-47571687-47652010-01-01201010.1155/2010/806538806538Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?Utpal Sen0Suresh C. Tyagi1Department of Physiology and Biophysics, University of Louisville School of Medicine, 500 South Preston Street, Louisville, KY 40202, USADepartment of Physiology and Biophysics, University of Louisville School of Medicine, 500 South Preston Street, Louisville, KY 40202, USADysfunction of macro- and microvessels is a major cause of morbidity and mortality in patients with cardio-renovascular diseases such as atherosclerosis, hypertension, and diabetes. Renal failure and impairment of renal function due to vasoconstriction of the glomerular arteriole in diabetic nephropathy leads to renal volume retention and increase in plasma homocysteine level. Homocysteine, which is a nonprotein amino acid, at elevated levels is an independent cardio-renovascular risk factor. Homocysteine induces oxidative injury of vascular endothelial cells, involved in matrix remodeling through modulation of the matrix metalloproteinase (MMP)/tissue inhibitor of metalloproteinase (TIMP) axis, and increased formation and accumulation of extracellular matrix protein, such as collagen. In heart this leads to increased endothelial-myocyte uncoupling resulting in diastolic dysfunction and hypertension. In the kidney, increased matrix accumulation in the glomerulus causes glomerulosclerosis resulting in hypofiltration, increased renal volume retention, and hypertension. PPARγ agonist reduces tissue homocysteine levels and is reported to ameliorate homocysteine-induced deleterious vascular effects in diabetes. This review, in light of current information, focuses on the beneficial effects of PPARγ agonist in homocysteine-associated hypertension and vascular remodeling in diabetes.http://dx.doi.org/10.1155/2010/806538
spellingShingle Utpal Sen
Suresh C. Tyagi
Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?
PPAR Research
title Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?
title_full Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?
title_fullStr Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?
title_full_unstemmed Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?
title_short Homocysteine and Hypertension in Diabetes: Does PPARγ Have a Regulatory Role?
title_sort homocysteine and hypertension in diabetes does pparγ have a regulatory role
url http://dx.doi.org/10.1155/2010/806538
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