Blood pressure in Afghan male immigrants to Denmark

Ali Asmar, Jens Bülow, Lene Simonsen, Niels J Christensen, Erik Frandsen, Peter Norsk

3 Citations (Scopus)

Abstract

Purpose: Immigration from a Third-World society to a Western society can be associated with higher blood pressure and salt sensitivity. We therefore tested whether immigrants from Afghanistan to Denmark compared with non-immigrant Danes exhibit a (i) higher 24-h ambulatory blood pressure (24-h ABP) and (ii) blunted renin response to a change in salt intake. Methods: Twenty-four-hour ABP was measured in 40 men of Afghan (Afghans) and 40 men of Danish (Danes) origin. Each group was divided into young (20-30 years, n = 20) and middle aged (40-60 years, n = 20). A 3-day low (70 mmol per 24-h) and a 3-day high (250 mmol per 24-h) salt intake were in addition instituted in subgroups of the young groups (n = 18). Results: Young and middle-aged Afghans exhibited a lower 24-h mean arterial pressure (24-h MAP) than the same respective age groups of Danes (83 ± 1 versus 90 ± 1 mm Hg, P<0·05, and 89 ± 2 versus 100 ± 1 mm Hg, P<0·05). 24-h ABP did not change in any of the young groups during increased salt intake, whereas the Danes exhibited a greater decrease in plasma renin activity (PRA) (P<0·05). Plasma noradrenaline (PNA) was significantly higher among the young Afghans. Conclusions: Afghan immigrants to Denmark exhibit a lower 24-h ABP than Danes. In young Afghans, PRA is less sensitive to changes in salt intake, while PNA is higher and may reflect their lower systolic blood pressure and/or arterial pulse pressure. Whether these hormonal differences can explain the lower 24-h ABP in Afghans should be further explored.

Original languageEnglish
JournalClinical Physiology and Functional Imaging
Volume33
Issue number6
Pages (from-to)470-7
Number of pages8
ISSN1475-0961
DOIs
Publication statusPublished - Nov 2013

Keywords

  • Adult
  • Afghanistan
  • Age Factors
  • Biological Markers
  • Blood Pressure
  • Blood Pressure Monitoring, Ambulatory
  • Denmark
  • Emigrants and Immigrants
  • Humans
  • Hypertension
  • Male
  • Middle Aged
  • Norepinephrine
  • Renin
  • Risk Factors
  • Sex Factors
  • Sodium Chloride, Dietary
  • Time Factors
  • Young Adult

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