Changes in HbA1c and circulating and adipose tissue androgen levels in overweight-obese women with polycystic ovary syndrome in response to electroacupuncture.

ABSTRACT

AIM
Insulin sensitivity is ~40% lower in women with polycystic ovary syndrome (PCOS) than in controls. We tested the hypothesis that 5 weeks of electroacupuncture treatment improves glucose regulation and androgen levels in overweight/obese women with PCOS.

MATERIAL AND METHODS
Seventeen women with PCOS, aged 18 to 38 years, with a body mass index (BMI) ≥25 kg/m² and diagnosed with PCOS were included in this experimental and feasibility study and subjected to five weeks of electroacupuncture treatments three times/week. The primary outcome was changes in whole-body glucose homeostasis measured by euglycemic hyperinsulinemic clamp before and after the intervention. Secondary outcome were changes in HbA_1c, circulating catecholamines, adipocyte size and adipose tissue expression of sex steroids and nerve growth factor (NGF).

RESULTS
No significant change in glucose homeostasis was observed, but HbA_1c decreased by 9.5% (p = 0.004), circulating testosterone decreased by 22% (p = 0.0007) and dihydrotestosterone decreased by 12% (p = 0.007). The two vagal activity markers of plasma serotonin levels and the dopamine metabolite homovanillic acid decreased by 21% (p = 0.027) and 20% (p = 0.011), respectively. Adipose tissue concentrations of testosterone decreased by 18% (p = 0.049), and androstenedione decreased by 13% (p = 0.035), and mature NGF/proNGF ratio, a marker of sympathetic activity, increased (p = 0.04). These changes occurred without changes in anthropometrics.

CONCLUSION
Five weeks of electroacupuncture treatment improves HbA_1c and circulating and adipose tissue androgens in women with PCOS. This effect is mediated, at least in part, via modulation of vagal activity and adipose tissue sympathetic activity. Based on these findings, we have recently initiated a randomized controlled study.

Authors: Stener-Victorin E¹, Maliqueo M², Soligo M³, Protto V³, Manni L³, Jerlhag E⁴, Kokosar M⁵, Sazonova A⁶, Behre CJ⁵, Lind M⁷, Ohlsson C⁸, Højlund K⁹, Benrick A¹⁰.
Published in Obes Sci Pract. 2016 Dec; 2(4): 426–435.

Quelle: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5192539/#osp478-supitem-0002