Journal
JOURNAL OF ATHEROSCLEROSIS AND THROMBOSIS
Volume 30, Issue 1, Pages 56-65Publisher
JAPAN ATHEROSCLEROSIS SOC
DOI: 10.5551/jat.63323
Keywords
Functional disability; Systemic inflammatory; C -reactive protein
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This study found an association between high-sensitivity C-reactive protein (hsCRP) levels and functional disability, particularly in men. The study followed 2,610 participants aged 65 and older for 9 years, and found that high hsCRP levels (>=3.0 mg/l) were significantly associated with an increased risk of functional disability in men. However, no significant association was observed in women.
Aims: High-sensitivity C-reactive protein (hsCRP) associates with atherosclerotic diseases such as stroke. However, previous results on the association between hsCRP levels and functional disability were controversial.Methods: We analyzed 2,610 men and women who did not exhibit functional disability or death within the first 3 years of the baseline survey and those aged 65 years or older at the end of follow-up. The levels of hsCRP were assessed using latex agglutination assay at baseline survey from 2006 to 2014. Functional disability was followed up using the long-term care insurance (LTCI) program until November 1, 2019. Functional disability was defined as a new LTCI program certification. Cox proportional hazards model with competing risk analysis for death was used to evaluate the association between hsCRP levels and future functional disability. Results: During a 9-year follow-up period, we observed 328 cases of functional disability and 67 deaths without prior functional disability incidence. The multivariable-adjusted hazard ratio (HR, 95% confidence interval [CI]) of functional disability in log-transferred hsCRP levels was 1.43 (1.22-1.67) in men and 0.97 (0.81-1.15) in women. When hsCRP level was analyzed as a categorical variable, low hsCRP levels (<1.0 mg/l) as the reference, the multivariable-adjusted HR (95% CI) of functional disability in high hsCRP levels (>= 3.0 mg/l) was 2.37 (1.56-3.62). Similar results were observed when stratified by sex, but it was not significant in women.Conclusions: This study demonstrates that low-grade systemic inflammation to assess hsCRP might predict the future incidence of functional disability, especially in men.
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