4.6 Article

Association of BNP with Frailty in Elderly Population: Rugao Longevity and Ageing Study

Journal

JOURNAL OF NUTRITION HEALTH & AGING
Volume 23, Issue 1, Pages 73-78

Publisher

SPRINGER FRANCE
DOI: 10.1007/s12603-018-1112-7

Keywords

Frailty; BNP; grip strength; gait speed; elderly

Funding

  1. National Natural Science Foundation [81670465, 81571372]
  2. Shanghai Municipal Natural Science Foundation [16ZR1439600]

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ObjectivesTo explore the associations of B-type natriuretic peptide (BNP) with physical frailty status as well as each domain of frailty in a general elderly population.DesignCross-sectional analysis of prospective cohort study.SettingAll of 31 communities in Jiang'an township.ParticipantsOverall 1338 participants (aged 70-89 years, mean 77.424.08 years) without a history of cardiovascular diseases in the third-wave of the aging arm of the Rugao Longevity and Aging Study (RuLAS).MeasurementsFrailty was defined as the presence of 3 domains among five modified Fried's criteria (unintentional weight loss, low physical activity level, weakness (low grip strength), exhaustion, and slowness (slow gait speed)) and pre-frailty as the presence of 1-2 domains.ResultsThe prevalence of frailty and pre-frailty was 10.4% and 53.3%, respectively, in this elderly population. Elevated BNP (100 pg/mL) was significantly associated with pre-frailty (OR: 1.61, 95% CI: 1.13-2.29) and frailty (OR: 2.63, 95% CI: 1.61-4.32) after adjustment for covariates. In addition, elevated BNP was associated with low grip strength (OR: 2.00, 95% CI: 1.41-2.82) and low gait speed (OR: 1.62, 95% CI: 1.15-2.28) after adjustment for multiple covariates. Log BNP was inversely associated with grip strength (r= -0.265, p<0.001) and gait speed (r= -0.189, p<0.001).ConclusionElevated plasma BNP was associated with increased risks of frailty, pre-frailty, and low levels of grip strength and gait speed in the elderly community people.

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