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  • Title: The effects of gender and type of diabetes on HDL-cholesterol.
    Author: Merrin PK, Baynes C, Henderson A, Richmond B, Elkeles R.
    Journal: Diabete Metab; 1994; 20(1):20-4. PubMed ID: 8056130.
    Abstract:
    OBJECTIVE: To investigate the influence of gender and type of Diabetes on plasma lipoproteins and post-heparin plasma lipoprotein lipase and hepatic lipase activities. DESIGN AND PATIENTS: Cross sectional study of 22 lean Type 2 diabetic subjects (11 men, 11 women) individually matched for gender, BMI and HbA1 with 22 Type 1 (C-peptide negative) diabetic subjects. MEASUREMENTS: Samples were taken for fasting lipids and post heparin samples were obtained for estimation of post heparin lipolytic activity. RESULTS: In men, HDL-Cholesterol was higher in Type 1 diabetes [1.56 (range 0.97-2.27) vs 1.07 (0.54-1.78) mmol/l, p = 0.009] and this was reflected in both HDL2-cholesterol [0.42 (0.02-1.36) vs 0.22 (0.01-0.90) mmol/l, p = 0.05] and HDL3-cholesterol [1.00 (0.75-1.51) vs 0.72 (0.53-0.87) mmol/l, p = 0.02] subfractions while serum triglyceride concentrations were similar. Lipoprotein lipase activity was higher in men with Type 1 diabetes [16.2 (6.2-42.4) vs 9.77 (5.6-22.6) mmol/h/l, p = 0.02] while hepatic lipase activities were similar [15.7 (9.3-23.0) vs 14.0 (6.8-24.0) mmol/h/l, NS). In women, there were no significant differences between Type 1 and Type 2 diabetes in triglycerides, HDL-C, HDL2 or HDL3. Lipoprotein lipase activity was higher in Type 1 women [19.3 (14.1-35.7) vs 11.0 (7.2-15.2) mmol/h-1 1-1, p = 0.0006] but lipatic lipase activity was also higher [12.1 (4.8-20.5) vs 7.3 (2.3-21.4) mmol/h-1 1-1, p = 0.023]. CONCLUSION: In non-obese diabetic subjects, men with Type 1 diabetes have higher HDL-cholesterol than those with Type 2 diabetes, possibly due to the action of peripheral insulin on lipoprotein lipase activity, while in women, HDL-cholesterol concentrations were similar in Type 1 and Type 2 subjects possibly because of lowered lipatic lipase activity in Type 2 women which offsets the increased lipoprotein lipase activity of the Type 1 women.
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