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Anatomical Science International

, Volume 94, Issue 1, pp 128–135 | Cite as

The distribution of nerves supplying the testis, epididymis and accessory sex glands of Suncus murinus

  • Yidan Dai
  • Ke Ren
  • Kazuhiro Kurosawa
  • Hayato Terayama
  • Yoko Miwa
  • Iwao Sato
  • Shuang-Qin Yi
Original Article
  • 110 Downloads

Abstract

Chronic testicular pain remains an important challenge for urologists. Investigation of the innervation of male gonads thus becomes essential for deepening our understanding of their regulatory roles in male reproductive physiology and pathophysiology. Studies of testicular innervation are mainly limited to the intratesticular peptidergic nerves of the testis by immunohistochemical and acetylcholinesterase histochemical investigations in some animals. Little is known about the detailed, overall distribution in general experimental animal testis. In this study, the distribution of nerves supplying the testis, epididymis and accessory sex glands of Suncus murinus was investigated by whole mount immunohistochemistry staining using a neurofilament protein antibody. Testicular nerves arose through three routes: nerves deriving from the mesenteric and renal plexuses accompanied the testicular artery, entering into the testicular hilum through the superior ligament of the testis. The nerves originating from the hypogastric plexus then ran along the internal iliac artery, deferential artery, and passed through the mesoductus deferens or mesoepididymis, innervating the cauda and corpus of the epididymis, the vas deferens and the inferior pole of the testis. The third route arose from the pelvic plexus, distributed in the seminal vesicle and the prostate. The density of nerve fibers was higher in the cauda epididymidis than in the testis, and more abundant in the vas deferens. The different origins and distribution densities of testicular nerves in S. murinus may serve different neuronal regulatory functions, and, therefore, S. murinus may be an important model animal for understanding the different characteristics of testicular pain.

Keywords

Nerve supply Testis Epididymidis Vas deferens Accessory male glands Suncus murinus 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest.

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Copyright information

© Japanese Association of Anatomists 2018

Authors and Affiliations

  • Yidan Dai
    • 1
  • Ke Ren
    • 1
  • Kazuhiro Kurosawa
    • 1
  • Hayato Terayama
    • 2
  • Yoko Miwa
    • 3
  • Iwao Sato
    • 3
  • Shuang-Qin Yi
    • 1
  1. 1.Department of Frontier Health Sciences, Graduate School of Human Health SciencesTokyo Metropolitan UniversityTokyoJapan
  2. 2.Division of Basic Medicine, Department of AnatomyTokai University School of MedicineKanagawaJapan
  3. 3.Department of Anatomy, School of Life Dentistry at TokyoThe Nippon Dental University TokyoTokyoJapan

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