American Journal of Epidemiology
Volume 142, Issue 3, 1995, Pages 295-303

The contribution of urinary cations to the blood pressure differences associated with migration (Article)

Klag M.J.* , He J. , Coresh J. , Whelton P.K. , Chen J.-Y. , Mo J.-P. , Qian M.-C. , Mo P.-S. , He G.-Q.
  • a Welch Center for Prevention, Epidemiology, and Clinical Research, Schools of Medicine and Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States, Department of Medicine, School of Medicine, The Johns Hopkins University, Baltimore, MD, United States, Department of Epidemiology, School of Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States, Department of Health Policy and Management, School of Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States
  • b Welch Center for Prevention, Epidemiology, and Clinical Research, Schools of Medicine and Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States, Department of Epidemiology, School of Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing
  • c Welch Center for Prevention, Epidemiology, and Clinical Research, Schools of Medicine and Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States, Department of Medicine, School of Medicine, The Johns Hopkins University, Baltimore, MD, United States, Department of Epidemiology, School of Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States
  • d Welch Center for Prevention, Epidemiology, and Clinical Research, Schools of Medicine and Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States, Department of Medicine, School of Medicine, The Johns Hopkins University, Baltimore, MD, United States, Department of Epidemiology, School of Hygiene and Public Health, The Johns Hopkins University, Baltimore, MD, United States
  • e Liangshan Yi People Autonomous Prefecture Anti-epidemic Station, Xichang City, Sichuan Province
  • f Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing
  • g Liangshan Yi People Autonomous Prefecture Anti-epidemic Station, Xichang City, Sichuan Province
  • h National Center for Clinical Laboratories, Ministry of Public Health, Beijing
  • i Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing

Abstract

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. © 1995 by The Johns Hopkins University School of Hygiene and Public Health.

Author Keywords

Transients and migrants Electrolytes Hypertension nutrition blood pressure

Index Keywords

urban population urban area China Alcohol Drinking alcohol consumption blood pressure agricultural worker human Ethnic Groups rural population ethnic group obesity comparative study diet hypertension Calcium Cross-Sectional Studies magnesium male cultural factor Article Support, U.S. Gov't, P.H.S. Support, Non-U.S. Gov't adult major clinical study migration Electrolytes Cations electrolyte urine level electrolyte intake cation electrolyte electrolyte excretion Linear Models sodium Transients and Migrants body mass Body Mass Index potassium Middle Age Culture
Link
https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029156435&doi=10.1093%2foxfordjournals.aje.a117635&partnerID=40&md5=0aa8786aff1b95e8506d57711f49e9a4
DOI: 10.1093/oxfordjournals.aje.a117635
ISSN: 00029262
Cited by: 30
Original Language: English