J Pediatr Endocrinol metab. 2005 Aug;18(8):761-8
Randomized controlled trial evaluating response to metformin versus standard therapy in the treatment of adolescents with polycystic ovary syndrome. Allen HF,Mazzoni C,Heptulla RA,Murray MA,Miller N,Koenigs L,Reiter EO.
Baystate Medical Center Children's Hospital, Tufts University School of Medicine, Springfield, MA 01199, USA. holley. Allen@bhs.org
Objectives:
We evaluated the hypothesis that metformin would improve signs and symptoms of polycystic ovary syndrome (PCOS) in adolescents as compared to oral contraceptive pills (OCP) and have a favorable effect on obesity.
Study Design:
Thirty-five obese, post-menarchal, non-sexually active adolescents aged 12-21 years with PCOS and hyperinsulinism were randomly assigned to receive either OCP or metformin for 6 months.
Results:
There was a significant decrease in BMI in the two groups over time, from 40.1 to 38.6 in the OCP group, and 37.3 to 36.3 in the metformin group, p = 0.0026, but no significant difference in the degree of change between the two groups. Both groups had decreased free testosterone (OCP: 1.8 pg/ml to 0.96 pg/ml; metformin: 2.1 pg/ml to 1.6 pg/ml), p<0.0001, and improvements in insulin resistance as evidenced by increased glucose/insulin (G/I) ratio (p<0.005) and increased QUICK1 scores (p<0.0005). No significant differences in response to treatment were found between the metformin and OCP groups in outcome variables.
Conclusion:
Adolescents with PCOS treated with metformin or OCP experienced similar beneficial outcomes including reduction in androgen levels, weight loss, and increased insulin sensitivity. The choice of a treatment agent for long-term use will depend on safety profiles, therapeutic goals and patient adherence.
See Also:
PCOS -
Polycystic Ovary Syndrome
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