Journal
JOURNAL OF CLINICAL BIOCHEMISTRY AND NUTRITION
Volume 49, Issue 1, Pages 62-66Publisher
JOURNAL CLINICAL BIOCHEMISTRY & NUTRITION
DOI: 10.3164/jcbn.10-129
Keywords
dietary folate; inflammation; heart failure; interleukin-8; MCP-1
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Funding
- Korea University
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This study aimed to examine the association of dietary vitamin intakes with plasma pro-inflammatory cytokine levels in Korean heart failure patients. Stable outpatients with heart failure were recruited and finally 91 patients were included. Dietary intakes were estimated by a developed semi-quantitative food frequency questionnaire. The simultaneous measurement of 17 cytokines was performed along with analysis of plasma C-reactive protein. Plasma C-reactive protein levels significantly correlated with dietary intakes of vitamin C (r = -0.30, p<0.005), beta-carotene (r = -0.23, p<0.05), and folate (r = -0.31, p<0.005). However, these associations were no longer significant after adjusting for traditional risk factors for heart failure. On the other hand, plasma levels of monocyte chemoattractant protein-1 significantly correlated with dietary folate intake (r = -0.31, p<0.001), and plasma interleukin-8 levels significantly correlated with dietary intakes of vitamin C (r = -0.38, p<0.001), beta-carotene (r = -0.42, p<0.001), and folate (r = -0.38, p<0.001) after the adjustment. Dietary folate intake was found as a primary influencing factor on plasma levels of monocyte chemoattractant protein-1 (p<0.005, R-2 = 0.20) and interleukin-8 (p<0.001, R-2 = 0.32) through a stepwise multiple linear regression analysis. Dietary folate intake was significantly associated with plasma levels of monocyte chemoattractant protein-1 and interleukin-8 which indicates dietary folate may have a potentially beneficial role in the prevention and treatment of heart failure.
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