Asprosin-mediated regulation of ovarian functions in mice: An age-dependent study.

Asprosin is a recently discovered adipokine reported to be involved in the modulation of mammalian gonadal functions. Preliminary investigations suggest its role in regulation of ovarian functions in rodents as well as bovids. In addition, increased levels of the adipokine during human ovarian pathophysiologies implicate it in disease progression and severity. The present study evidenced high expression of asprosin in ovaries of juvenile, pubertal and adult mice while expression was significantly low in ageing ovaries. Further, asprosin stimulated expression of markers for ovarian folliculogenesis (Scf, c-Kit, Gdf9, Bmp6, Fshr, Lhr) and steroidogenesis (3β-Hsd) in adult mice. In addition to exploring concentration-dependent effect of asprosin, the study implicates asprosin as an age-dependent modulator of ovarian functions as treatment of ovaries with asprosin led to upregulation of Fshr, c-Kit, Bmp6, and Gdf9 in both adult and juvenile ovaries, Lhr only in adults while that of Scf only in juvenile ovaries. The current study is first to report an age-dependent expression and role of asprosin in murine ovaries.