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Cigarette smoking, high-density lipoprotein cholesterol subfractions, and lecithin: cholesterol acyltransferase in young women.

Much of the published data on the relationship of cigarette smoking (CS) with serum lipids and lipoproteins is based on studies of middle-aged individuals. Data on young women are scarce. This study examined the relationship of CS with high-density lipoprotein cholesterol (HDL-C) subfractions and lecithin:cholesterol acyltransferase (LCAT) activity in Japanese collegiate women. Twenty-three current smokers were individually matched for physical activity scores, age, and body mass index (BMI) with 23 nonsmokers. There were no significant differences between smokers and nonsmokers in the mean nutrient intakes. Smokers had significantly lower mean HDL-C, HDL2-C, total cholesterol, and LCAT activity than nonsmokers. In univariate analyses, BMI significantly negatively correlated with HDL-C and HDL2-C. LCAT activity significantly positively correlated with HDL3-C, LDL-C, total cholesterol (TC) and triglycerides (TG). In multiple regression analyses, the number of CS was positively related to TG. BMI was negatively related to TC. LCAT activity was positively related to LDL-C, TC, and TG. These results suggest that the known associations in older adults of CS with HDL-C subfractions and LCAT activity are already apparent in young women.