| Hyperglycemia and oxidative stress strengthen the association between myeloperoxidase and blood pressure. | |
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MedLine Citation:
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PMID: 20385972 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Scavenging of the vasodilator nitric oxide by myeloperoxidase activity in the vasculature may contribute to hypertension. Because hydrogen peroxide is a cosubstrate of myeloperoxidase, hyperglycemia-induced oxidative stress may strengthen the relationship between myeloperoxidase and blood pressure. We investigated this relationship and its modification by hyperglycemia and oxidative stress in a population-based cohort of elderly subjects with normal glucose metabolism (n=267), impaired glucose metabolism (n=189), and type 2 diabetes (n=290). In an age- and sex-adjusted linear regression model, plasma myeloperoxidase was positively associated with systolic blood pressure (2.10 mm Hg per 1 SD increment of myeloperoxidase [95% CI: 0.66 to 3.54]), and this association was stronger at higher levels of fasting glucose (0.61 [-1.70 to 2.93], 1.33 [-1.43 to 4.10], and 3.42 [1.01 to 5.82] for increasing tertiles of glucose) and higher plasma levels of oxidized low-density lipoprotein (0.92 [-1.31 to 3.14], 2.00 [-0.71 to 4.70], and 3.58 [0.98 to 6.19] for increasing tertiles of oxidized low-density lipoprotein). Likewise, the relationship between myeloperoxidase and blood pressure was strongest under conditions associated with oxidative stress, like obesity, low high-density lipoprotein cholesterol, metabolic syndrome, and type 2 diabetes. The strength of these associations was only marginally attenuated by adjustment for other cardiovascular risk factors. Our data demonstrate that myeloperoxidase is positively and independently associated with blood pressure, and this association is strongest in subjects with (hyperglycemia-induced) oxidative stress. These observations, together with emerging evidence that myeloperoxidase-derived oxidants contribute to the initiation and propagation of cardiovascular disease, identify myeloperoxidase as a promising target for drug development. |
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Authors:
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Leonard P Van der Zwan; Peter G Scheffer; Jacqueline M Dekker; Coen D A Stehouwer; Robert J Heine; Tom Teerlink |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2010-04-12 |
Journal Detail:
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Title: Hypertension Volume: 55 ISSN: 1524-4563 ISO Abbreviation: Hypertension Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-05-20 Completed Date: 2010-06-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7906255 Medline TA: Hypertension Country: United States |
Other Details:
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Languages: eng Pagination: 1366-72 Citation Subset: IM |
Affiliation:
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Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Biological Markers / blood Blood Glucose / metabolism Blood Pressure / physiology Blood Pressure Determination Cardiovascular Diseases / physiopathology, prevention & control Cohort Studies Diabetes Mellitus, Type 2 / blood, diagnosis, epidemiology* Female Humans Hyperglycemia / blood, diagnosis, epidemiology* Hypertension / blood, diagnosis, epidemiology* Linear Models Male Multivariate Analysis Oxidative Stress / physiology* Peroxidase / blood*, metabolism Probability Prognosis Proportional Hazards Models Reference Values Risk Assessment Severity of Illness Index |
| Chemical | |
Reg. No./Substance:
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0/Biological Markers; 0/Blood Glucose; EC 1.11.1.7/Peroxidase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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