Document Detail


Blood pressure hyperreactivity: an early cardiovascular risk in normotensive men exposed to low-to-moderate inorganic arsenic in drinking water.
MedLine Citation:
PMID:  23203141     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Essential hypertension is associated with chronic exposure to high levels of inorganic arsenic in drinking water. However, early signs of risk for developing hypertension remain unclear in people exposed to chronic low-to-moderate inorganic arsenic.
OBJECTIVE: We evaluated cardiovascular stress reactivity and recovery in healthy, normotensive, middle-aged men living in an arsenic-endemic region of Romania.
METHODS: Unexposed (n = 16) and exposed (n = 19) participants were sampled from communities based on WHO limits for inorganic arsenic in drinking water (<10 μg/l). Water sources and urine samples were collected and analyzed for inorganic arsenic and its metabolites. Functional evaluation of blood pressure included clinical, anticipatory, cold pressor test, and recovery measurements. Blood pressure hyperreactivity was defined as a combined stress-induced change in SBP (> 20 mmHg) and DBP (>15 mmHg).
RESULTS: Drinking water inorganic arsenic averaged 40.2 ± 30.4 and 1.0 ± 0.2 μg/l for the exposed and unexposed groups, respectively (P < 0.001). Compared to the unexposed group, the exposed group expressed a greater probability of blood pressure hyperreactivity to both anticipatory stress (47.4 vs. 12.5%; P = 0.035) and cold stress (73.7 vs. 37.5%; P = 0.044). Moreover, the exposed group exhibited attenuated blood pressure recovery from stress and a greater probability of persistent hypertensive responses (47.4 vs. 12.5%; P = 0.035).
CONCLUSIONS: Inorganic arsenic exposure increased stress-induced blood pressure hyperreactivity and poor blood pressure recovery, including persistent hypertensive responses in otherwise healthy, clinically normotensive men. Drinking water containing even low-to-moderate inorganic arsenic may act as a sympathetic nervous system trigger for hypertension risk.
Authors:
Julie Kunrath; Eugen Gurzau; Anca Gurzau; Walter Goessler; Elyssa R Gelmann; Thu-Trang Thach; Kathleen M McCarty; Catherine W Yeckel
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of hypertension     Volume:  31     ISSN:  1473-5598     ISO Abbreviation:  J. Hypertens.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-10     Completed Date:  2013-07-02     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  8306882     Medline TA:  J Hypertens     Country:  England    
Other Details:
Languages:  eng     Pagination:  361-9     Citation Subset:  IM    
Affiliation:
Yale School of Public Health, Yale University School of Medicine, New Haven, Connecticut, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Arsenic / toxicity*
Blood Pressure*
Drinking Water / chemistry*
Environmental Exposure*
Exercise Test
Humans
Male
Middle Aged
Grant Support
ID/Acronym/Agency:
L30 CA124219/CA/NCI NIH HHS; L30 CA124219/CA/NCI NIH HHS; L30 ES019436/ES/NIEHS NIH HHS; L30 ES019436/ES/NIEHS NIH HHS
Chemical
Reg. No./Substance:
0/Drinking Water; 7440-38-2/Arsenic
Comments/Corrections

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