Intracerebroventricular injection of spexin stimulates the hypothalamic-pituitary-testicular axis and increases the secretion of male reproductive hormones in rats.

Autor: Yilmaz N; Karabük University, Faculty of Medicine, Department of Anatomy, Karabük, Turkey. Electronic address: nesibeyilmaz@karabuk.edu.tr., Yasi N RZI; Karabük University, Faculty of Medicine, Department of Anatomy, Karabük, Turkey., Yildiz A; İnönü University, Faculty of Medicine, Department of Histology and Embriyology, Malatya, Turkey.
Jazyk: angličtina
Zdroj: Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft [Ann Anat] 2024 Aug; Vol. 255, pp. 152300. Date of Electronic Publication: 2024 Jul 04.
DOI: 10.1016/j.aanat.2024.152300
Abstrakt: Background: Male reproductive functions are regulated in the hypothalamic-pituitary-gonadal (HPG) axis. Any problem in this axis would lead to the deterioration of reproductive functions. The present study aimed to investigate the effects of intracerebroventricular (icv) Spexin (SPX) infusion on the HPG axis in detail.
Methods: 40 Wistar albino rats were divided into four groups: control, sham, SPX 30 nmol and SPX 100 nmol (n=10). 30 nmol/1 µl/hour SPX was administered icv to the rats in the SPX 30 nmol group for 7 days, while rats in the SPX 100 nmol group were administered 100 nmol/1 µl/hour SPX. On the 7th day, the rats were decapitated, blood and tissue samples were collected. Serum LH, FSH and testosterone levels were determined with the ELISA method, GnRH mRNA expression level was determined in hypothalamus with the RT-PCR method. Seminiferous tubule diameter and epithelial thickness were determined with the hematoxylin-eosin staining method.
Results: SPX infusion was increased GnRH mRNA expression in the hypothalamus tissue independent of the dose (p<0.05). Serum LH, FSH and testosterone levels in the SPX groups were increased when compared to the control and sham groups independent of the dose (p <0.05). Histological analysis revealed that SPX infusion did not lead to any changes in seminiferous epithelial thickness, while the tubule diameter increased in the SPX groups (p<0.05).
Conclusion: The study findings demonstrated that icv SPX infusion stimulated the HPG axis and increased the secretion of male reproductive hormones.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier GmbH. All rights reserved.)
Databáze: MEDLINE
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