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Serum lipid profile in an elderly Chinese population
1Department of Medicine, Faculty of Medicine, Chinese University of Hong Kong, Shatin, N.T.
Summary
Central obesity, smoking, and certain medications significantly impact serum lipid profiles in older Hong Kong Chinese adults. Diabetes mellitus also lowers high-density lipoprotein (HDL) cholesterol levels.
Area of Science:
- Gerontology
- Cardiovascular Health
- Metabolic Syndrome
Background:
- Serum lipid profiles are crucial indicators of cardiovascular health.
- Understanding factors influencing lipid concentrations in aging populations is vital for public health.
- Obesity, lifestyle, and comorbidities like diabetes mellitus can significantly alter lipid metabolism.
Purpose of the Study:
- To investigate the influence of age, sex, obesity indices, medications, smoking, alcohol intake, and diabetes on serum lipid, lipoprotein, and apolipoprotein levels.
- To identify specific associations between anthropometric measures and lipid parameters.
- To examine the impact of common medications and lifestyle factors on lipid profiles in an elderly Chinese cohort.
Main Methods:
- Cross-sectional study of 160 men and 154 women (mean age 70.2 years) in Hong Kong.
- Analysis of serum lipid profile, including triglycerides, cholesterol, high-density lipoprotein (HDL) cholesterol, and apolipoproteins A-I and B.
- Statistical assessment of correlations between lipid parameters and factors such as waist/hip ratio, body mass index, smoking status, alcohol intake, medication use, and diabetes mellitus.
Main Results:
- A high waist/hip ratio (central obesity) correlated with higher triglycerides and lower apolipoprotein A-I.
- Higher body mass index was linked to lower HDL cholesterol and higher apolipoprotein B.
- Smokers and beta-blocker users exhibited lower apolipoprotein A-I.
- Methyldopa users showed increased triglycerides and very low-density lipoprotein cholesterol, with decreased HDL and HDL2 cholesterol.
- Diabetic subjects had lower HDL fractions, with lipid levels correlating to glycemic control.
Conclusions:
- Central obesity and specific medications significantly affect lipid and apolipoprotein concentrations in older Hong Kong Chinese.
- Smoking and diabetes mellitus are associated with unfavorable lipid profiles, particularly reduced HDL cholesterol.
- These findings highlight the importance of managing obesity, lifestyle factors, and comorbidities for cardiovascular risk reduction in this population.