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首页> 外文期刊>Comparative Medicine >Incidence of testicular lesions in a population of tree shrews (Tupaia belangeri)
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Incidence of testicular lesions in a population of tree shrews (Tupaia belangeri)

机译：一群树sh（Tupaia belangeri）睾丸病变的发生率

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摘要

Background and Purpose: The sexual activity of male tree shrews is socially influenced; therefore, the testicular lesions in adult male tree shrews were of interest. Methods: The testes of 229 adult and 9 subadult male tree shrews were obtained during routine necropsy and were subjected to light microscopy. At one time, 138 animals were experimentally exposed to social conflicts. Results: Hypospermatogenesis (testicular inactivity) was observed in social stress-exposed males up to two years of age. Seasonality of hypospermatogenesis could not be statistically supported. Testicular atrophy, observed in 21 animals, was neither stress- nor age-related; it developed unilaterally, with the left testis preferred. Testicular tumors developed in animalsolder than 2 years, with increasing frequency particularly of Leydig cell tumors in animals more than fours year old. Conclusion: Testicular lesions were more frequently found in male tree shrews than they were observed in non-human primates kept at theGerman Primate Center. Connections to social stress were statistically supported, particularly with respect to hypospermatogenesis. Testicular tumors, in contrast, were distinctly age related.
机译：背景与目的：雄性树sh的性活动受到社会影响;因此，成年雄性树sh的睾丸病变受到关注。方法：在常规尸检中获得229只成年树和9只亚成年雄树sh的睾丸，并对其进行光学显微镜检查。一次有138只动物实验性地暴露于社会冲突中。结果：在暴露于社会压力的两岁以下男性中观察到了过度生精（睾丸不活动）。统计上不能支持发育不足发生的季节性。在21只动物中观察到的睾丸萎缩与压力和年龄均无关。单侧发展，首选左侧睾丸。大于2岁的动物中出现睾丸肿瘤，且发病频率不断升高，尤其是大于4岁的动物中的Leydig细胞肿瘤。结论：雄性树sh中睾丸病变的发生率比保存在德国灵长类动物中心的非人类灵长类动物中更为常见。与社会压力的关系在统计学上得到了支持，特别是在低精子发生方面。相反，睾丸肿瘤明显与年龄有关。

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