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Updated: Jan 19, 2026

Mouse Round Spermatid Injection
Published on: January 26, 2024
The rat spermatogenesis after injection of paclitaxel (antitumor agent)
T G Borovskaya1, V E Goldberg, O A Rumpel
1Institute of Pharmacology, Tomsk Research Center, Siberian Division of the Russian Academy of Medical Sciences, Russia. igdoca@mail.ru
Abstract:
Morphological and functional characteristics of spermatogenesis in rats were studied during the early and delayed periods after single injection of paclitaxel (antitumor agent) in the maximum tolerated dose. The drug induced structural changes in the gonads associated with oligospermia and increased number of pathological forms of spermatozoa with reduced functional activity.
Insights
Paclitaxel, an antitumor drug, impairs rat sperm production and quality. This study reveals significant testicular damage and reduced sperm function following treatment.
Area of Science:
- Reproductive biology
- Toxicology
- Oncology
Background:
- Paclitaxel is a widely used chemotherapy agent with known side effects.
- The impact of paclitaxel on male reproductive function requires further elucidation.
- Understanding chemotherapy-induced reproductive toxicity is crucial for patient management.
Purpose of the Study:
- To investigate the effects of paclitaxel on rat spermatogenesis.
- To evaluate morphological and functional changes in sperm after paclitaxel administration.
- To assess the impact of paclitaxel at early and delayed time points post-treatment.
Main Methods:
- Rats were administered a single maximum tolerated dose of paclitaxel.
- Testicular morphology and sperm parameters were analyzed at different time intervals.
- Spermatogenesis was assessed by examining sperm count, morphology, and functional activity.
Main Results:
- Paclitaxel induced significant structural damage in rat testes.
- Oligospermia (low sperm count) was observed.
- An increased number of pathologically formed spermatozoa with reduced functional activity were noted.
Conclusions:
- Paclitaxel causes adverse effects on spermatogenesis in rats.
- The observed testicular changes and impaired sperm quality suggest potential male infertility risks.
- Further research is needed to explore protective strategies against paclitaxel-induced reproductive toxicity.
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