ArticleReproductive medicine and biology
Effects of aging and oviductal hormones on testes, epididymides, and sperm of hamster.
Article in Reproductive medicine and biology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 7 citations in OpenAlex.
- Interactions among progesterone, estradiol, and γ-aminobutyric acid in rat spermatozoal hyperactivation.The Journal of reproduction and development · 2026Article
- Epimedii Folium Supplementation Improves Semen Quality, Hormonal Profile, and Immune Function by Modulating Gut Microbiota and Seminal Metabolites in Aged Boars.Animals : an open access journal from MDPI · 2026Article
- Tryptophan promotes sperm hyperactivation in hamsters via 5-hydroxytryptamine biosynthesis within sperm.The Journal of reproduction and development · 2025Article
- Influences of 5-hydroxytriptamine on sperm hyperactivation and in vitro fertility in rats.The Journal of reproduction and development · 2025Article
- Enhancement of rat spermatozoal hyperactivation by progesterone.The Journal of reproduction and development · 2023Article
- Progesterone increases the success of in vitro fertilization via enhanced sperm hyperactivation in mice.The Journal of reproduction and development · 2023Article
- Comparative characteristics between calyculin A-induced and thimerosal-induced hyperactivation of cryopreserved bovine spermatozoa.The Journal of reproduction and development · 2023Article
- Effects of aging and oviductal hormones on testes, epididymides, and sperm of hamster.Reproductive medicine and biologyArticle
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Aging is a major cause of decreased fertility. Using hamster, we examined the effects of aging on testes, epididymides, and sperm. Additionally, we examined whether progesterone (P Methods: Young (10-16 weeks), Adult (5-7 months), Aged (13-15 months), and Old (19-22 months) hamsters were used. Weights of bodies, testes, and epididymides were measured. Testes and epididymides were studied by histological microscopy. Sera were obtained to determine testosterone concentrations. Sperm were analyzed by video-microscopy. Results: By aging, body weights increased but weights of testes and epididymides decreased. Most hamsters were normozoospermia, although several old hamsters were azoospermia. In testes and epididymides, desquamation and structures resembling residual bodies (SRRBs) were observed. Although desquamation was not always related to aging, SRRBs occurred by aging. Testosterone concentrations were not changed in normozoospermic hamsters, but it was significantly reduced in old azoospermic hamster. Aging significantly reduced sperm ability to exhibit hyperactivation. Additionally, aging significantly increased the straight-line velocity (VSL). P Conclusion: Aging reduces qualities of testes, epididymides, and sperm, and P
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