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PLOS ONE:睾丸移植到大鼠颈部可维持其生精能力

2017-05-10 MedSci medicalxpress

日本东京医科大学和爱知医科大学的一组研究人员进行了将一只老鼠的睾丸移植到另一只老鼠的颈部,以保护第一只老鼠的精子发生的可行性研究。在他们的论文中,描述了这项工作是如何开展的,并将其与移植到宿主睾丸内的尝试进行了比较。

日本东京医科大学和爱知医科大学的一组研究人员进行了将一只老鼠的睾丸移植到另一只老鼠的颈部,以保护第一只老鼠的精子发生的可行性研究。在他们的论文中,描述了这项工作是如何开展的,并将其与移植到宿主睾丸内的尝试进行了比较。

当男性或男孩被确诊为某些类型的癌症,特别是白血病,或者如果在一个或多个睾丸中发现癌变时,经常建议他们将精液样本冷冻以备日后使用,因为一些治疗会使他们永久不育。对于较年轻的或青春期病人来说,这不是选择,而是意味着他们永远无法生育后代。

为了解决这个问题,科学家一直在研究去除产生精子的睾丸部分,并将其植入另一个人,如兄弟或父亲体内的可能性。理论上这是可行的,因为睾丸具有免受免疫系统攻击的特性。如果移植的睾丸能够继续产生精子,那么可以在晚些时候将其收获,甚至更好的情况是,在癌症治疗结束后移植回最初的病人。先前的研究已经发现,由于睾丸囊内部的物理结构,将其生精部位从一只大鼠的睾丸囊移植到另一只大鼠的睾丸囊内是特别困难的。因此一些研究人员考虑把它们移植到宿主的其他部位。于是,研究人员从几只老鼠身上取下了睾丸,把它们放在其他老鼠的脖子上,以测试这种方法的可行性。

研究人员对12只大鼠进行了手术,为了进行比较,也将睾丸植入几只宿主大鼠的睾丸囊中。结果表明,颈部移植手术的成功率为100%,但睾丸囊移植手术的成功率只有71%。颈部移植过程平均需要60分钟,而睾丸囊移植手术的平均时间为154分钟。

他们的研究结果表明,到目前为止,颈部移植似乎是一个更好的选择。但仍需要进行更多的测试来了解睾丸在颈部的存活率以及持续产生精子的时间。

原文出处
: Kai Yi et al. Development of heterotopic transplantation of the testis with the epididymis to evaluate an aspect of testicular immunology in rats, PLOS ONE (2017).

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    2017-05-12 zhangph
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