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Role of vaspin in porcine ovary: effect on signaling pathways and steroid synthesis via GRP78 receptor and protein kinase A.
Abstract Vaspin, visceral adipose tissue-derived serine protease inhibitor, is involved in the development of obesity, insulin resistance, inflammation and energy metabolism. Our previous study showed vaspin expression and its regulation in the ovary; however, the role of this adipokine in ovarian cells has never been studied. Here, we studied in vitro the effect of vaspin on various kinase signaling pathways: mitogen-activated kinase (MAP3/1), serine/threonine kinase (AKT), signal transducer and activator of transcription 3 (STAT3) protein kinase AMP (PRKAA1), protein kinase A (PKA) and on expression of nuclear f...
Source: Biology of Reproduction - March 8, 2020 Category: Reproduction Medicine Authors: Kurowska P, Mlyczyńska E, Dawid M, Dupont J, Rak A Tags: Biol Reprod Source Type: research

Spexin role in human granulosa cells physiology and PCOS: expression and negative impact on steroidogenesis and proliferation
Biol Reprod. 2023 Sep 2:ioad108. doi: 10.1093/biolre/ioad108. Online ahead of print.ABSTRACTSpexin (SPX) is a novel neuropeptide and adipokine negatively correlated with obesity and insulin resistance. A recent study investigated expression and regulatory function of SPX in the hypothalamus and pituitary; however, the effect on ovarian function is still unknown. The aim of this study was to characterize the expression of SPX and its receptors, galanin receptors 2 and 3 (GALR2/3) in the human ovary and to study its in vitro effect on granulosa cells (GC) function. Follicular fluid (FF) and GC were obtained from normal weigh...
Source: Biology of Reproduction - September 2, 2023 Category: Reproduction Medicine Authors: Patrycja Kurowska Monika Dawid Julia Oprocha Natalia Repekta Lo ïse Serra Anthony Estienne Piotr Pawlicki Ma łgorzata Kotula-Balak Fabrice Gu érif Joelle Dupont Agnieszka Rak Source Type: research