The Effect of Interleukin-6 (IL-6), Interleukin-11 (IL-11), Signal Transducer and Activator of Transcription 3 (STAT3), and AKT Signaling on Adipocyte Proliferation in a Rat Model of Polycystic Ovary Syndrome

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

BACKGROUND Polycystic ovary syndrome (PCOS) is associated with low-grade inflammation, adipocyte hypertrophy, hyperglycemia, increased serum testosterone levels, and reduced lipolysis. This study aimed to investigate the role of interleukin-6 (IL-6) and IL-11 in the pathophysiology of adipocyte hypertrophy in a rat model of PCOS. MATERIAL AND METHODS The rat model of PCOS was developed using a subcutaneous injection of dehydroepiandrosterone (DHEA). Histology of the rat ovaries was used to confirm the development of PCOS. Serum levels of testosterone and glucose were measured. Immunohistochemistry, immunofluorescence, quantitative real-time polymerase chain reaction (qRT-PCR), and Western blot were performed to measure IL-6 and IL-11 in the rat model of PCOS. Cell proliferation was measured using the cell counting kit-8 (CCK-8) assay. RESULTS Serum levels of testosterone and glucose and the expression of IL-6 and IL-11 were significantly increased in the rat model of PCOS via the activation of AKT/STAT3 signaling. Following IL-6 and IL-11 stimulation of mesenchymal adipocytes isolated from adipose tissue, IL-6 and IL-11 induced cell proliferation through the STAT3/AKT signaling pathway. CONCLUSIONS In a rat model of PCOS, increased expression of IL-6 and IL-11 was associated with the AKT/STAT3 pathway. Increased levels of IL-6 and IL-11 stimulated adipocytes from adipose tissue

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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