Document Detail


The influence of α-adducin gene polymorphism on response of blood pressure to exercise in patients with hypertension.
MedLine Citation:
PMID:  20929695     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
OBJECTIVE: Clinical studies have indicated that an excessive response of blood pressure (BP) to exercise predicts risk of cardiovascular mortality. Although the mechanism responsible for the excessive BP response to exercise has not been revealed, there are some plausible mechanisms linking with underlying structural abnormalities in the cardiovascular system. Carriers of the Trp460 allele of the α-adducin Gly460Trp polymorphism have an increased risk of hypertension. The aim of the present study was to examine the influence of α-adducin gene polymorphism on response of BP to exercise in patients with hypertension.
METHODS: The cross-sectional observational study consisted of 49 hypertensive patients (29 women and 20 men; mean age, 53.1±8.8 years). All participants underwent a multistage exercise treadmill test according to the Bruce protocol. Arterial BPs were compared at rest, peak exercise and end of the recovery phase. Patients were classified according to their α-adducin gene polymorphisms; Gly460Gly homozygotes - Group 1 (n=28) and Trp460Trp homozygotes and Gly460Trp heterozygotes - Group 2 (n=21). Statistical analysis was performed using Chi-square, unpaired t, Mann-Whitney U and ANCOVA tests.
RESULTS: Mean exercise duration and mean exercise capacity in metabolic equivalents were not different between Group 1 and 2. The major finding of the study was that systolic BP responses at peak exercise and recovery period (3. min) were significantly higher (p=0.036) in hypertensive patients carrying at least one Trp460 allele of the α-adducin gene.
CONCLUSION: Our results suggest that genetic variants that alter renal function and/or vasoreactivity are logical candidates to explain some of the individual variability in the BP response to exercise.
Authors:
Emin Alioğlu; Ertuğrul Ercan; Istemihan Tengiz; Uğur Onsel Türk; Metin Ergün; Semra Akgöz; Cetin Işlegen; Afig Berdeli
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Anadolu kardiyoloji dergisi : AKD = the Anatolian journal of cardiology     Volume:  10     ISSN:  1308-0032     ISO Abbreviation:  Anadolu Kardiyol Derg     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101095069     Medline TA:  Anadolu Kardiyol Derg     Country:  Turkey    
Other Details:
Languages:  eng     Pagination:  400-4     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Central Hospital, İzmir, Turkey. dreminalioglu@yahoo.com
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