Panagiotis Anagnostis1, John C Stevenson2, David Crook3, Desmond G Johnston1, Ian F Godsland4. 1. Diabetes Endocrinology and Metabolic Medicine, Faculty of Medicine, Imperial College London, St. Mary's Campus, London, UK. 2. National Heart and Lung Institute, Imperial College London, Royal Brompton Campus, UK. 3. Clinical Investigations and Research Unit, Royal Sussex County Hospital, Sussex, School of Health Sciences, University of Brighton, UK. 4. Diabetes Endocrinology and Metabolic Medicine, Faculty of Medicine, Imperial College London, St. Mary's Campus, London, UK. Electronic address: i.godsland@imperial.ac.uk.
Abstract
OBJECTIVE: To distinguish the effects of menopause, gender and age on serum lipid risk markers for vascular disease, including high-density lipoprotein cholesterol (HDL-C) subfractions 2 and 3 (HDL2-C and HDL3-C). METHODS: We undertook a cross-sectional database analysis of apparently healthy Caucasian pre- and postmenopausal women and men (n=515, 518 and 800, respectively) not taking drugs affecting lipid metabolism (including contraceptive or post-menopausal steroids). Measurements of serum total cholesterol (TC), low-density lipoprotein (LDL-C), triglycerides (TG), HDL-C, HDL2-C, HDL3-C and non-HDL-C concentrations and the TC/HDL-C concentration ratio were considered. RESULTS: Men had lower TC than postmenopausal women (p<0.001) and similar LDL-C. Compared with premenopausal women, postmenopausal women had a more atherogenic lipid profile with lower HDL2-C (median 0.67 vs 0.60 mmol/L, p<0.001) but no difference in HDL3-C (0.96 vs 0.96 mmol/L, p=0.8). Compared with either pre or postmenopausal women, men had a more atherogenic profile with lower HDL2-C (0.36 mmol/L) and HDL3-C (0.91 mmol/L, all p<0.001). With standardization for confounding variables, including standardization to age of menopause (50 years), differences apparent in the non-standardized comparisons were generally sustained, although HDL3-C levels were lower at menopause, HDL2-C ceased to differ and LDL-C was lower in postmenopausal women than men. CONCLUSIONS: Male gender is associated with a more atherogenic profile than female gender, with appreciably lower levels of the HDL2-C subfraction. Among women, menopause is associated with a more atherogenic lipid profile, but has less effect than male gender.
OBJECTIVE: To distinguish the effects of menopause, gender and age on serum lipid risk markers for vascular disease, including high-density lipoprotein cholesterol (HDL-C) subfractions 2 and 3 (HDL2-C and HDL3-C). METHODS: We undertook a cross-sectional database analysis of apparently healthy Caucasian pre- and postmenopausal women and men (n=515, 518 and 800, respectively) not taking drugs affecting lipid metabolism (including contraceptive or post-menopausal steroids). Measurements of serum total cholesterol (TC), low-density lipoprotein (LDL-C), triglycerides (TG), HDL-C, HDL2-C, HDL3-C and non-HDL-C concentrations and the TC/HDL-C concentration ratio were considered. RESULTS:Men had lower TC than postmenopausal women (p<0.001) and similar LDL-C. Compared with premenopausal women, postmenopausal women had a more atherogenic lipid profile with lower HDL2-C (median 0.67 vs 0.60 mmol/L, p<0.001) but no difference in HDL3-C (0.96 vs 0.96 mmol/L, p=0.8). Compared with either pre or postmenopausal women, men had a more atherogenic profile with lower HDL2-C (0.36 mmol/L) and HDL3-C (0.91 mmol/L, all p<0.001). With standardization for confounding variables, including standardization to age of menopause (50 years), differences apparent in the non-standardized comparisons were generally sustained, although HDL3-C levels were lower at menopause, HDL2-C ceased to differ and LDL-C was lower in postmenopausal women than men. CONCLUSIONS: Male gender is associated with a more atherogenic profile than female gender, with appreciably lower levels of the HDL2-C subfraction. Among women, menopause is associated with a more atherogenic lipid profile, but has less effect than male gender.
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