Document Detail


The contribution of urinary cations to the blood pressure differences associated with migration.
MedLine Citation:
PMID:  7631633     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
People living in unacculturated societies have a low average blood pressure and little rise in blood pressure with age. In a community-based survey in southwestern China, the authors assessed the contribution of urinary cation excretion to differences in blood pressure between an unacculturated group (Yi farmers) and migrants to an urban environment, as well as urban controls from a different ethnic group (Han). In March 1989, blood pressure and overnight urinary electrolyte levels were measured on 3 consecutive days in 313 Yi farmers, 265 Yi migrants, and 253 urban Han residents, all male. Of the urinary electrolytes, a higher sodium:potassium ratio best explained the higher blood pressure in the migrants. Yi farmers had lower systolic (106.7 mmHg vs. 114.8 mmHg, respectively) and diastolic (66.2 mmHg vs. 71.3 mmHg, respectively) blood pressures than Yi migrants. However, even after adjustment for age, body mass index, alcohol intake, and urinary sodium, potassium, calcium, and magnesium excretion, Yi farmers continued to have lower average blood pressures than Yi migrants. In pooled analyses of all three groups, urinary sodium and calcium were positively related and urinary potassium and magnesium were inversely related to blood pressure. Migration is associated with a higher blood pressure that is only partially explained by higher levels of adiposity and alcohol and sodium intake and lower levels of potassium and magnesium intake.
Authors:
M J Klag; J He; J Coresh; P K Whelton; J Y Chen; J P Mo; M C Qian; P S Mo; G Q He
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  American journal of epidemiology     Volume:  142     ISSN:  0002-9262     ISO Abbreviation:  Am. J. Epidemiol.     Publication Date:  1995 Aug 
Date Detail:
Created Date:  1995-09-07     Completed Date:  1995-09-07     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7910653     Medline TA:  Am J Epidemiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  295-303     Citation Subset:  IM    
Affiliation:
Welch Center for Prevention, Epidemiology, and Clinical Research, School of Medicine, Johns Hopkins University, Baltimore, MD 21205-2223, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Alcohol Drinking
Blood Pressure / physiology*
Body Mass Index
Cations / urine
China
Cross-Sectional Studies
Culture
Diet
Electrolytes / urine*
Ethnic Groups
Humans
Linear Models
Male
Middle Aged
Rural Population
Transients and Migrants*
Urban Population
Grant Support
ID/Acronym/Agency:
5M01RR00722/RR/NCRR NIH HHS; RR00035/RR/NCRR NIH HHS
Chemical
Reg. No./Substance:
0/Cations; 0/Electrolytes

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