Related Experiment Video
Updated: Jul 28, 2025

Establishment of Rat Models Mimicking Gender-affirming Hormone Therapies
Published on: January 10, 2025
Hesperidin Mitigates Cyclophosphamide-Induced Testicular Dysfunction via Altering the Hypothalamic Pituitary Gonadal
Tarek Khamis1, Abdelmonem Awad Hegazy2,3, Samaa Salah Abd El-Fatah3
1Department of Pharmacology and Laboratory of Biotechnology, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44519, Egypt.
Abstract:
Cyclophosphamide (CP) is a cytotoxic, cell cycle, non-specific, and antiproliferative drug. This study aimed to address the toxic effects of CP on male fertility and the possible ameliorative role of hesperidin (HSP). Thirty-two adult albino rats were randomly divided into four groups, namely, the negative control, HSP, CP-treated, and CP+HSP-treated groups. The CP-treated rats showed a significant reduction in the levels of serum LH, FSH, testosterone, prolactin, testicular glutathione peroxidase (GPx), and total antioxidant capacity (TAC) with an elevation in levels of malondialdehyde (MDA), and p53, and iNOS immune expression, compared to the control group. A significant downregulation in hypothalamic KISS-1, KISS-1r, and GnRH, hypophyseal GnRHr, and testicular mRNA expression of steroidogenesis enzymes, PGC-1α, PPAR-1, IL10, and GLP-1, as well as a significant upregulation in testicular mRNA of P53 and IL1β mRNA expression, were detected in the CP-treated group in comparison to that in the control group. The administration of HSP in CP-treated rats significantly improved the levels of serum LH, FSH, testosterone, prolactin, testicular GPx, and TAC, with a reduction in levels of MDA, and p53, and iNOS immune expression compared to the CP-treated group. A significant upregulation in hypophyseal GnRHr, and testicular mRNA expression of CYP19A1 enzymes, PPAR-1, IL10, and GLP-1, as well as a significant downregulation in testicular mRNA of P53 and IL1β mRNA expression, were detected in the CP+HSP-treated group in comparison to that in the CP-treated group. In conclusion, HSP could be a potential auxiliary agent for protection from the development of male infertility.
Related Concept Videos
Acid Suppressive Drugs for Peptic Ulcer Disease: Histamine H2-Receptor Antagonists
Testosterone: Functions and Regulation
Hypothalamic-Pituitary Axis
Spermatogenesis
Gonadal and Placental Hormones
In males, testosterone is the primary gonadal androgen. It plays a central role in the maturation of male reproductive organs — the penis and testes. Additionally, testosterone is instrumental in the development of secondary sexual characteristics — a deep voice as well as facial and pubic hair...
Hormonal Regulation of the Menstrual Cycle
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...

