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To compare effect of acarbose versus glibenclamide treatment on mean amplitude of glyclemic excursion and oxidative stress in diabetes individuals who failed to control their glucose by metformin therapy alone
This is a randomised and open-label study conducted in 2 medical centers in central part of Taiwan. Type 2 diabetic outpatients were eligible if they were aged 30-70 years, were on mono- or dual oral antidiabetic drugs for at least 3 months, and had a glycated hemoglobin (HbA1c) value between 7.0% and 11.0%. Patients who were treated with insulin or drugs that promote weight loss, had impaired renal (serum creatinine concentration greater than 132.6 μmol/l) or liver (AST or ALT 2.5 times upper limit of normal range) function, had a history of hemoglobinopathy or chronic anemia, or women of child-bearing potential without adequate contraception were excluded. All patients provided their informed consent before they were enrolled in this study.
After an 8-week period of metformin monotherapy (500 mg t.i.d.), all patients were randomised to add on either acarbose or glibenclamide. The doses of acarbose and glibenclamide were 50 mg t.i.d. and 2.5 mg t.i.d., respectively, for 4 weeks and force-titrated to 100 mg t.i.d. and 5 mg t.i.d., respectively, for the last 12 weeks. A complete 72 hours of glucose monitoring using a continuous glucose monitoring (CGM) system and meal tolerance test (MTT) after a 10-h overnight fasting were performed before randomisation and in the end of study. Morning urine samples were collected for measurement of 8-iso prostaglandin F2α (8-iso PGF2α), a commonly used parameter of oxidative stress (13-14). The primary objectives are the changes of MAGE obtained from CGM and urinary excretion rate of 8-iso PGF2α. The secondary objectives include changes of HbA1c, lipid profiles including total cholesterol, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and triglycerides, oxidized low-density lipoprotein (ox-LDL), high-sensitivity C-reactive protein (hs-CRP), total adiponectin, and high-molecular weight (HMW) adiponectin.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Taichung Veterans General Hospital
Taichung Veterans General Hospital
Published on BioPortfolio: 2014-07-24T14:23:06-0400
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An inhibitor of alpha glucosidase that retards the digestion and absorption of carbohydrates in the small intestine and hence reduces the increase in blood-glucose concentrations after a carbohydrate load. It is given orally to non-insulin dependent diabetes mellitus patients where diet modification or oral hypoglycemic agents do not control their condition. (From Martindale The Extra Pharmacopoeia, 31st ed)
Diabetes mellitus induced experimentally by administration of various diabetogenic agents or by PANCREATECTOMY.
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