期刊
INTERNATIONAL JOURNAL OF EPIDEMIOLOGY
卷 43, 期 1, 页码 140-148出版社
OXFORD UNIV PRESS
DOI: 10.1093/ije/dyt239
关键词
Mendelian randomization; testosterone; cardiovascular disease; risk factors; cholesterol
资金
- University of Hong Kong Foundation for Development and Research
- University of Hong Kong University Research Committee Strategic Research Theme of Public Health
- Guangzhou Public Health Bureau
- Guangzhou Science and Technology Bureau
- University of Birmingham
- Research Grant Council General Research Fund, Research Grant Council of Hong Kong [769710]
Methods To minimize reverse causality, a genetic score predicting testosterone was developed in 289 young Chinese men from Hong Kong, based on three selected testosterone-related single nucleotide polymorphisms (rs10046, rs1008805 and rs1256031). Multivariable censored and linear regressions were used to examine the association of genetically predicted testosterone levels with CVD risk factors and Framingham score among 4212 older Chinese men from the Guangzhou Biobank Cohort Study. Results Predicted testosterone was unrelated to systolic blood pressure [-0.11 mmHg, 95% confidence interval (CI) -0.70 to 0.48], diastolic blood pressure (0.04 mmHg, 95% CI -0.27 to 0.36), fasting glucose (0.02 mmol/l, 95% CI -0.02 to 0.06) or Framingham score (0.02, 95% CI -0.0001 to 0.03) but associated with higher LDL-cholesterol (0.02 mmol/l, 95% CI 0.01 to 0.04) and lower HDL-cholesterol (-0.01 mmol/l, 95% CI -0.02 to -0.001), after adjustment for potential confounders (age, education, smoking status, use of alcohol and body mass index). Conclusions Our findings did not corroborate observed protective effects of testosterone on cardiovascular risk factors or risk of ischaemic heart disease among men, but raises the possibility that higher testosterone may be associated with an unhealthier lipid profile.
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