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Updated: Jun 12, 2026
Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
Published on: April 13, 2015
Green tea extracts attenuate doxorubicin-induced spermatogenic disorders in conjunction with higher telomerase
Kenji Sato1, Kou Sueoka, Reiko Tanigaki
1Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-0016, Japan.
Purpose:
The aim of this study was to investigate the protective effect of green tea extracts against doxorubicin-induced damage in the mouse testes correlating with telomerase activity.
Methods:
Green tea extracts were administered orally. Doxorubicin was coadministered intraperitoneally. These testes were evaluated histologically and the telomerase activity was analyzed. Additional immunostaining was carried out.
Results:
Both the sperm density and sperm motility were significantly increased in green tea extracts coadministration groups as compared to the doxorubicin-treated groups. By histological analysis, germ cell damage was greatly attenuated by green tea extracts coadministration. Telomerase activity significantly increased in association with the coadministration of green tea extracts as compared to that of doxorubicin-only groups. In all groups, human telomerase reverse transcriptase signals were mainly observed in the spermatocytes and spermatids.
Conclusions:
These findings suggest that green tea extracts exert protective effects against doxorubicin-induced spermatogenic disorders in conjunction with higher telomerase activity levels.
Insights
Green tea extracts protect mouse testes from doxorubicin damage by improving sperm count and motility. This protective effect is linked to increased telomerase activity, suggesting a novel therapeutic approach.
Area of Science:
- Reproductive toxicology
- Pharmacology
- Biochemistry
Background:
- Doxorubicin is a potent chemotherapy agent with known testicular toxicity.
- Spermatogenic disorders can result from chemotherapy-induced damage.
- Telomerase plays a crucial role in cell proliferation and tissue repair.
Purpose of the Study:
- To evaluate the protective efficacy of green tea extracts against doxorubicin-induced testicular damage in mice.
- To investigate the correlation between green tea extract administration, testicular protection, and telomerase activity.
Main Methods:
- Oral administration of green tea extracts and intraperitoneal coadministration of doxorubicin in a mouse model.
- Histological examination of testicular tissues to assess germ cell damage.
- Analysis of telomerase activity and immunostaining for human telomerase reverse transcriptase (hTERT).
Main Results:
- Green tea extract coadministration significantly improved sperm density and motility compared to doxorubicin-only treatment.
- Histological analysis revealed attenuation of germ cell damage with green tea extract coadministration.
- Telomerase activity was significantly elevated in groups receiving green tea extracts alongside doxorubicin.
Conclusions:
- Green tea extracts demonstrate a protective effect against doxorubicin-induced spermatogenic disorders.
- The protective mechanism appears to be associated with enhanced telomerase activity.
- These findings suggest a potential role for green tea extracts in mitigating chemotherapy-induced reproductive toxicity.
