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  • Title: Complementary insulin therapy improves blood glucose and serum lipid parameters in type 2 (non-insulin-dependent) diabetic patients. II. Effects on serum lipids, lipoproteins and apoproteins.
    Author: Vaverková H, Chlup R, Ficker L, Novotny D, Bartek J.
    Journal: Exp Clin Endocrinol Diabetes; 1997; 105 Suppl 2():74-7. PubMed ID: 9288551.
    Abstract:
    The aim of the present study was to evaluate the effects of complementary insulin therapy, consisting of a single dose of 1 to 8 units of shortacting insulin before each meal (4-6x daily) and sometimes at 02.30 h, on concentrations of serum lipids, lipoproteins and apoproteins in type 2 (non-insulin-dependent) diabetic patients, unsatisfactorily controlled either by oral hypoglycemic agents (OHA) or by longacting insulin 1-2x daily (INS 1-2). Compared means +/- SD. Patients on INS 1-2 (n = 82) had better baseline glycemic control than patients on OHA (n = 68) (HbAlc: 9.33 +/- 1.76% vs. 10.59 +/- 1.83%, p < 0.001 and fructosamine: 3.34 +/- 0.74 mmol/l vs. 3.85 +/- 0.84 mmol/l, p < 0.001) and serum triglyceride concentrations (3.03 +/- 2.05 mmol/l vs. 4.95 +/- 4.48 mmol/l, p < 0.001), in spite of longer duration of diabetes (13.35 +/- 8.07 years vs. 10.1 +/- 6.9 years, p < 0.001). After 8-10 weeks of complementary insulin therapy, OHA patients (n = 33) improved both the glycemic control (HbA1c: 10.5 +/- 1.78% vs. 9.0 +/- 1.75%, p < 0.001) and fructosamine: 4.0 +/- 0.85 mmol/l vs. 3.5 +/- 0.76 mmol/l, p < 0.001) and most of the lipid parameters (decreased serum triglyceride: 5.8 +/- 5.64 mmol/l vs. 3.6 +/- 4.69 mmol/l, p < 0.001, total cholesterol/HDL-cholesterol: 6.8 +/- 3.13 vs. 5.6 +/- 2.23, p < 0.01 and increased HDL-cholesterol: 1.0 +/- 0.30 mmol/l vs. 1.2 +/- 0.30 mmol/l, p < 0.001, apo AI: 1.6 +/- 0.26 g/l vs. 1.8 +/- 0.28 g/l, p < 0.001, LpAI particles: 0.6 +/- 0.1 g/l vs. 0.7 +/- 0.12 g/l, p < 0.001 and LDL-cholesterol/apo B: 2.1 +/- 0.67 vs. 2.7 +/- 0.67, p < 0.001). In patients previously on INS 1-2x (n = 34), complementary insulin therapy with reduced dose of insulin per day (49.6 +/- 22.5 U/d vs. 36.6 +/- 13.3 U/d, p < 0.001) did not further improve glycemic control but improved the number of proatherogenic and antiatherogenic lipoprotein particles (decreased apo B: 1.7 +/- 0.52 g/l vs. 1.5 +/- 0.94 g/l, p < 0.01, apo AI/Lp AI: 2.9 +/- 1.01 vs. 2.3 +/- 0.98, p < 0.01 and increased Lp AI particles: 0.6 +/- 0.10 g/l vs. 0.7 +/- 0.12 g/l, p < 0.0001); BMI also decreased (29.4 +/- 4.28 kg/m2 vs. 28.9 +/- 4.24 kg/m2, p < 0.05). These results demonstrate that complementary insulin therapy probably induces antiatherogenic lipoprotein changes in NIDDM patients previously treated by either OHA or INS 1-2x. Thus, this type of therapy should be used more often and start earlier, and should be preferred to longacting insulins.
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