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Year : 2014  |  Volume : 2  |  Issue : 1  |  Page : 24-28

The effect of short-term metformin therapy on insulin resistance among obese males in Al-Ramadi, Iraq

1 Department of Clinical Pharmacy, The Al-Ramadi General Hospital, Baghdad, Iraq
2 Department of Pharmacology, College of Medicine, Al-Mustansiriya University, Baghdad, Iraq
3 Department of Medicine, College of Medicine, University Anbar, Ramadi, Baghdad, Iraq

Correspondence Address:
Marwan S. M. Al-Nimer
Department of Pharmacology, College of Medicine, Al Mustansiriya University, Baghdad
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Source of Support: College of Medicine , Anbar University,, Conflict of Interest: None

DOI: 10.4103/2347-2618.137594

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Background: Insulin resistance (IR) is one feature of obese patients with type 2 diabetes and associated with a clustering of metabolic abnormalities. Obesity per se is one component of a cluster of metabolic abnormalities that included the hyperinsulinemia. Objectives: This study aims to assess the status of IR in obese nondiabetic subjects using HOME-IR index and demonstrate the therapeutic effect of metformin as an insulin sensitizer. Materials and Methods: A total number of 76 out of 97 obese male completed the study. The subjects assigned to receive a single-dose of metformin (850 mg/daily) for 3 months. Anthropometric measurements and the following biochemical tests were carried on before and after treatment: Fasting serum glucose, glycosylated hemoglobin, and fasting serum insulin. The basal metabolic rate (BMR), HOMA-IR, and insulin sensitivity (IS) were calculated using a specific formula. Results: Metformin therapy resulted in a significant decrease in body mass index of obese subjects. This effect is associated with significant decrease BMR. Significant decrease HOMA-IR observed in Classes I and II obesity (62.95% and 65.13%, respectively) and to a lesser extent in Class III (72.48%). Significant improvement in glycosylated hemoglobin was observed in Classes I and II obesity. HOMA-IR index is significantly correlated with glycosylated hemoglobin before and after treatment. Conclusions: Metformin improves IS in nondiabetic obese men besides its favorable effect in reducing the body weight.

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