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Some studies suggest that metformin and complementary compounds can improve insulin resistance in PCOS, while other studies indicate that alternative treatments like Bushen Huatan Decoction, Guizhi Fuling Wan, resveratrol, and troxerutin may also be effective.
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Polycystic Ovary Syndrome (PCOS) is a prevalent endocrine-metabolic disorder among women of reproductive age, characterized by symptoms such as irregular menstrual cycles, hyperandrogenism, and polycystic ovaries. A significant number of women with PCOS also suffer from insulin resistance (IR), which exacerbates both metabolic and reproductive abnormalities .
Metformin, a common insulin-sensitizing drug, has been extensively studied for its efficacy in treating insulin resistance in PCOS. Research indicates that metformin can improve insulin sensitivity, regulate menstrual cycles, lower androgen levels, and potentially enhance fertility in women with PCOS . However, some studies suggest that metformin may not significantly reduce insulin resistance in all PCOS patients, indicating variability in response based on individual metabolic profiles.
Traditional Chinese Medicine, including formulations like Bushen Huatan Decoction (BSHTD) combined with Baduanjin exercises, has shown promise in treating IR-PCOS. These treatments aim to improve insulin resistance, regulate menstrual cycles, and correct glucose metabolism disorders. Another TCM, Guizhi Fuling Wan, has been found to ameliorate insulin sensitivity by remodeling intestinal homeostasis and reducing inflammation.
Natural compounds such as resveratrol and troxerutin have also been investigated for their potential benefits in managing insulin resistance in PCOS. Resveratrol has been shown to improve insulin resistance and restore glycolysis pathways by activating SIRT2, which may help mitigate ovarian damage in PCOS. Troxerutin, on the other hand, enhances insulin sensitivity through the IL-22/JAK1/STAT3 signaling pathway, offering another potential therapeutic avenue.
Combining metformin with other drugs like sitagliptin has been explored to enhance treatment efficacy. Studies have demonstrated that this combination can improve insulin sensitivity, reduce apoptosis in ovarian cells, and correct hormonal imbalances in PCOS patients. The mechanism involves the upregulation of lncRNA H19, which plays a crucial role in the therapeutic effects.
The management of insulin resistance in PCOS requires a multifaceted approach tailored to individual patient profiles. While metformin remains a cornerstone of treatment, complementary therapies such as TCM, natural compounds, and combination drug therapies offer promising alternatives. Further research is needed to optimize these treatments and identify specific subgroups of PCOS patients who may benefit the most from each therapeutic strategy.
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