Effects of pioglitazone hydrochloride on Japanese patients with type 2 diabetes mellitus.
OBJECTIVE
The effects of pioglitazone hydrochloride monotherapy on abnormal lipid control were evaluated in Japanese patients with type 2 diabetes mellitus, comparing with glibenclamide monotherapy.


METHODS
Patients were randomly assigned to receive, once daily, pioglitazone hydrochloride, at 15 mg or 30 mg (n=46), or glibenclamide, at 1.25 mg or 2.5 mg (n=46). The 24-week study included patients with type 2 diabetes having high levels of triglyceride (TG).


RESULTS
Pioglitazone hydrochloride produced beneficial effects on dyslipidemia in patients with type 2 diabetes, compared with the baseline and the glibenclamide group, as demonstrated by increases in high-density lipoprotein cholesterol (HDL-C) levels and low-density lipoprotein cholesterol (LDL) particle size, a fall in TG levels, and an increased ratio of visceral to subcutaneous fat volumes (V/S). Pioglitazone hydrochloride reduced fasting serum insulin levels, with low fasting plasma glucose (FPG) and glycohemoglobin levels, compared to the baseline, suggesting an improvement of insulin resistance.


CONCLUSIONS
As expected, glibenclamide reduced FPG levels through increased insulin secretion. Pioglitazone hydrochloride and glibenclamide were well tolerated. Pioglitazone hydrochloride improved dyslipidemia related to insulin resistance, whereas glibenclamide enhanced insulin secretion, with only a minor effect on lipid control, in Japanese patients with type 2 diabetes.
Teramoto
Tamio
T
Department of Internal Medicine, School of Medicine, Teikyo University, Kaga, Tokyo, Japan. ttera@med.teikyo-u.ac.jp
Yamada
Nobuhiro
N
Shirai
Kohji
K
Saito
Yasushi
Y
D000368:Aged; D044466:Asian People; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000188:drug therapy* / Q000503:physiopathology; D005215:Fasting; D005260:Female; D006801:Humans; D007004:Hypoglycemic Agents / Q000008:administration & dosage*; D007333:Insulin Resistance; D008297:Male; D008875:Middle Aged; D000077205:Pioglitazone; D050151:Subcutaneous Fat / Q000187:drug effects / Q000503:physiopathology; D045162:Thiazolidinediones / Q000008:administration & dosage*; D014280:Triglycerides / Q000097:blood
D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D007004:Hypoglycemic Agents; D045162:Thiazolidinediones; D014280:Triglycerides; D000077205:Pioglitazone