Background: Elevated plasma levels of high-sensitivity C-reactive protein (hs-CRP) have been associated with increased adverse health outcomes. The aim of this study was to investigate the association of sleep duration with risk of elevated hs-CRP levels in Taiwanese adults. Methods: We examined the association between sleep duration and hs-CRP in 353 healthy adults recruited from the physical examination center at a regional hospital in southern Taiwan. Elevated hs-CRP was defi ned as a plasma level ≥ 0.20 mg/dL. Short sleep duration was defi ned as ≤ 5.5 h per day. Multiple logistic regression analysis was used to assess the association of short duration of sleep with elevated hs-CRP levels. Results: In this study, short duration of sleep (odds ratio [OR] = 2.20; 95% confi dence interval [CI]: 1.11-4.30), aged 70 years or older (OR = 4.58; 95% CI: 1.70-12.66), menopause (OR = 2.81; 95% CI: 1.52-5.3), higher heart rate (OR = 1.38; 95% CI: 1.10-1.75), higher body mass index (OR = 1.20; 95% CI: 1.09-1.34), higher white blood cell count (OR = 1.38; 95% CI: 1.14-1.66), and higher uric acid level (OR = 1.31; 95% CI: 1.06-1.63) were signifi cantly associated with an increased risk of elevated hs-CRP levels. Conclusions: In this study of healthy Taiwanese adults, short duration of sleep was signifi cantly associated with elevated hs-CRP levels. Activation of pro-infl ammatory pathways might represent a mechanism by which short sleep duration affects health. Keywords: sleep duration, C-reactive protein, high-sensitivity CRP, hs-CRP Citation: Chiang JK. Short duration of sleep is associated with elevated high-sensitivity C-reactive protein level in Taiwanese adults: a cross-sectional study. J Clin Sleep Med 2014;10(7):743-749.http://dx.doi.org/10.5664/jcsm.3862
S C I E N T I F I C I N V E S T I G A T I O N SC -reactive protein is secreted by the liver in response to acute infl ammation and infection.1 The high-sensitivity C-reactive protein (hs-CRP) assay has low detection limits, and good performance for apparently healthy subjects.2 Elevated hs-CRP levels have been associated with infl ammation, aging, cancer, adverse outcomes of angina pectoris, coronary artery disease, adverse outcomes of chronic obstructive pulmonary disease, stroke, and increased risk of mortality. [3][4][5][6][7][8][9][10] In addition, elevated hs-CRP has been shown to be a stronger predictor of cardiovascular disease than low-density lipoprotein cholesterol.11 A recent study of more than 4,000 subjects followed for six years revealed that elevated hs-CRP was associated with type 2 diabetes.
12Another study with a follow-up of 11 years also demonstrated the same association of hs-CRP with diabetes.13 As expected, patients with lower glycosylated hemoglobin (A1C) levels were found to have signifi cantly lower hs-CRP levels.14 In recent years it has been shown that sleep duration might affect health in a number of ways, such as its associations with insulin resistance, diabetes, hyperleptinemia, heart disease, and mortality.15-17 Specifi cally, sho...