Replacing with whole grains and legumes reduces Lp-PLA 2 activities in plasma and PBMCs in patients with prediabetes or T2D

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Title
Replacing with whole grains and legumes reduces Lp-PLA 2 activities in plasma and PBMCs in patients with prediabetes or T2D
Author(s)
M Kim; S R Jeung; Tae Sook Jeong; S H Lee; J H Lee
Bibliographic Citation
Journal of Lipid Research, vol. 55, no. 8, pp. 1762-1771
Publication Year
2014
Abstract
To determine dietary effects on circulating lipoprotein-associated phospholipase A2 (Lp-PLA2) activity and enzyme activity in peripheral blood mononuclear cells (PBMCs), 99 patients with impaired fasting glucose, impaired glucose tolerance, or newly-diagnosed T2D were randomly assigned to either a control group (usual diet with refined rice) or the whole grain and legume group. Substitution of whole grains and legumes for refined rice was associated with the replacement of 7% of energy from carbohydrates with energy from protein (about 4%) and fat. After 12 weeks, the whole grain and legume group showed a significant decrease in fasting glucose, insulin, homeostasis model assessment-insulin resistance, hemoglobin A1c, malondialdehyde, plasma Lp-PLA2 activity, and oxidized LDL (ox-LDL), and an increase in LDL particle size. The changes (Δs) in these variables in the whole grain and legume group were significantly different from those in controls after adjustment for the baseline levels. When all subjects were considered, Δ plasma Lp-PLA2 positively correlated with Δ glucose, Δ PBMC Lp-PLA2, Δ ox-LDL, and Δ urinary 8-epiprostaglandin F2α after being adjusted for confounding factors. The Δ PBMC Lp-PLA2 correlated positively with Δ glucose and Δ ox-LDL, and negatively with Δ LDL particle size and baseline PBMC Lp-PLA2. The substitution of whole grains and legumes for refined rice resulted in a reduction in Lp-PLA2 activities in plasma and PBMCs partly through improved glycemic control, increased consumption of protein relative to carbohydrate, and reduced lipid peroxides.
Keyword
Peripheral blood mononuclear cellType 2 diabetes
ISSN
0022-2275
Publisher
Amer Soc Biochemistry Molecular Biology Inc
DOI
http://dx.doi.org/10.1194/jlr.M044834
Type
Article
Appears in Collections:
Division of Biomedical Research > Microbiome Convergence Research Center > 1. Journal Articles
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