Document Detail

Association of leukocyte telomere length with echocardiographic left ventricular mass: the Framingham heart study.
MedLine Citation:
PMID:  19752323     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Leukocyte telomere length (LTL) decreases over the adult life course owing to the cumulative burden of oxidative stress, inflammation, and exposure to vascular risk factors. Left ventricular (LV) mass is a biomarker of long-standing exposure to cardiovascular disease risk factors. We hypothesized that LTL is related inversely to LV mass.
METHODS AND RESULTS: We related LTL (measured by Southern blot analysis) to echocardiographic LV mass and its components (LV diastolic dimension and LV wall thickness) in 850 Framingham Heart Study participants (mean age 58 years, 58% women) using multivariable linear regression with adjustment for age, sex, height, weight, systolic blood pressure, hypertension treatment, and smoking. Overall, multivariable-adjusted LTL was positively related to LV mass (beta-coefficient per SD increase 0.072; P=0.001), LV wall thickness (beta=0.053; P=0.01), and LV diastolic dimension (beta=0.035; P=0.09). We observed effect modification by hypertension status (P for interaction=0.02 for LV mass); LTL was more strongly associated with LV mass and LV wall thickness in individuals with hypertension (beta-coefficient per SD increment of 0.10 and 0.08, respectively; P<0.01 for both). Participants with hypertension who were in the top quartile of LV mass had LTL that was 250 base pairs longer than those in the lowest quartile (P for trend across quartiles=0.009).
CONCLUSIONS: In contrast to our expectation, in the present community-based sample, LTL was positively associated with LV mass and wall thickness, especially so in participants with hypertension. These data are consistent with the hypothesis that longer LTL may be a marker of propensity to LV hypertrophy.
Ramachandran S Vasan; Serkalem Demissie; Masayuki Kimura; L Adrienne Cupples; Charles White; Jeffrey P Gardner; Xiaogian Cao; Daniel Levy; Emelia J Benjamin; Abraham Aviv
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2009-09-14
Journal Detail:
Title:  Circulation     Volume:  120     ISSN:  1524-4539     ISO Abbreviation:  Circulation     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-09-29     Completed Date:  2009-10-29     Revised Date:  2014-09-20    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1195-202     Citation Subset:  AIM; IM    
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MeSH Terms
Blotting, Southern
Cross-Sectional Studies
Hypertension / epidemiology*
Hypertrophy, Left Ventricular* / epidemiology,  prevention & control,  ultrasonography
Leukocytes / physiology*
Massachusetts / epidemiology
Middle Aged
Multivariate Analysis
Oxidative Stress
Risk Factors
Telomere / genetics*
Grant Support
2 K24 HL04334/HL/NHLBI NIH HHS; 6R01-NS 17950/NS/NINDS NIH HHS; K24 HL004334/HL/NHLBI NIH HHS; K24 HL004334-08/HL/NHLBI NIH HHS; N01 HC025195/HC/NHLBI NIH HHS; N01-HC-25195/HC/NHLBI NIH HHS; R01 AG021593/AG/NIA NIH HHS; R01 AG021593-05/AG/NIA NIH HHS; R01 HL080124/HL/NHLBI NIH HHS; R01 HL080124-05/HL/NHLBI NIH HHS; R01 NS017950/NS/NINDS NIH HHS; R01 NS017950-28/NS/NINDS NIH HHS; R01AG021593/AG/NIA NIH HHS; R01HL080124/HL/NHLBI NIH HHS

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