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Comparative Study
, 39 (7), 747-54

A Possible Connection Between Tumor Necrosis Factor Alpha and Adropin Levels in Polycystic Ovary Syndrome

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Comparative Study

A Possible Connection Between Tumor Necrosis Factor Alpha and Adropin Levels in Polycystic Ovary Syndrome

T Kume et al. J Endocrinol Invest.

Abstract

Context: Adropin is a peptide hormone implicated in the regulation of insulin sensitivity and energy homeostasis. Polycystic ovary syndrome (PCOS) is a metabolic and reproductive disease associated with insulin resistance. It has been demonstrated that various inflammatory markers increased in PCOS including TNF-α. TNF-α regulates the secretion of certain peptides which play a crucial role in glucose and lipid homeostasis. There is also some evidence of a link between TNF-α and adropin.

Objective: To ascertain whether there is an association between circulating adropin levels and TNF-α in PCOS.

Patients and design: 152 women with PCOS and 152 age- and body mass index-matched controls without PCOS were recruited for this cross-sectional study.

Main outcome measures: Adropin and TNF-α levels were measured using ELISA.

Results: Adropin levels were lower in the PCOS group compared with the control group (7.43 ± 0.79 vs. 9.42 ± 0.76 ng/ml, P < 0.001), whereas TNF-α levels were higher (49.93 ± 3.39 vs. 35.83 ± 2.47 pg/ml, P < 0.001). A strongly negative correlation was found between circulating adropin levels and TNF-α levels in women with PCOS (r = -0.407, P < 0.001). Binary logistic regression analysis revealed that decreased adropin levels were significantly associated with high odds of having PCOS, although, after adjustment for TNF-α, this link vanished. Additionally, multiple linear regression analysis showed that HOMA-IR and TFN-α independently predicted adropin levels.

Conclusions: Serum adropin levels are significantly decreased in PCOS and are inversely associated with TNF-α. Further dissection of the nature of this association can open new therapeutic options for metabolic diseases.

Keywords: Adropin; Cytokine; Insulin resistance; Polycystic ovary syndrome; Tumor necrosis factor-α.

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