| The Effect of Metformin in Non-Obese Women with Polycystic Ovary Syndrome; Pilot Stud. |
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Hyeong Ok Kim, Kye Hyun Kim |
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Department of Obstetrics and Gynecology, Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine, Seoul, Korea. |
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| Abstract |
OBJECTIVE
This pilot study was performed to investigate the effect of metformin on insulin resistance, hormone levels, and lipid profiles in non-obese patients with polycystic ovary syndrome. METHODS: This study included 16 non-obese patients with polycystic ovary syndrome diagnosed at our hospital from June 2006 to September 2007. Blood samples were collected before and 6 months after metformin treatment for analysis of fasting serum glucose levels, fasting serum insulin levels, a glycemic response to 75 g oral glucose tolerance test (OGTT), and hormonal blood profile including FSH, LH, estradiol, testosterone, free testosterone, serum lipid profiles. Insulin resistance was estimated by calculating fasting glucose/insulin ratio (FGIR), 2 hr glucose/insulin ratio after 75 g glucose load. And we investigated insulin resistance and pancreatic beta cell function by calculating HOMA beta cell function and HOMA IR. RESULTS: After the treatment of metformin, there was significant increase in 2 hr glucose/insulin ratio after 75 g glucose load (p=0.04) and decrease in HOMA IR (p=0.000). But serum lipid profiles did not change significantly. Also the metformin treatment induced a significant reduction in serum free testosterone and LH levels, and LH/FSH ratio (p=0.001, p=0.000, p=0.034). CONCLUSION: This pilot study showed that metformin might be effective in improving insulin sensitivity, ameliorating hyperandrogenemia in non-obese patients with polycystic ovary syndrome. Further investigations with larger number of patients and long-term observations are necessary to determine the role of metformin. |
| Key Words:
Metformin; Polycystic ovary syndrome; Insulin resistance; Hyperandrogenemia |
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