Current Aspects of Autocrine and Paracrine Regulation of Spermatogenesis

  • Bernard Jégou
  • Charles Pineau
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 377)

Abstract

The testis is composed of the convoluted seminiferous tubules embedded in a connective tissue matrix, named interstitium. The seminiferous tubule comprises the germ cells in various developmental phases, the nonproliferating Sertoli cells and the peritubular cells, which surround the Sertoli cells and germ cells. Germ cells that are continuously renewed and Sertoli cells that cease to divide during pubertal development, form the seminiferous epithelium. The primary function of the seminiferous tubules is the production of spermatozoa. The interstitium contains interspersed blood and lymphatic vessels, nerves, fibrobastic cells, macrophages, lymphocytes, more rarely mast cells and the Leydig cells. The primary function of the Leydig cells is to produce testosterone (see Huhtaniemi and Toppari, this book). This hormone is essential for the differentiation of the embryonic male reproductive organs, the sexualization of the hypothalamus and brain, in formation of the accessory sex organs. It is also crucial for the regulation of sexual behavior and accessory sex organs and of spermatogenesis. On Figure 1, a schematic representation of the testicular organization is presented.

Keywords

Germ Cell Sertoli Cell Leydig Cell Seminiferous Tubule Seminiferous Epithelium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Bernard Jégou
    • 1
  • Charles Pineau
    • 1
  1. 1.G.E.R.M., INSERM U.435Université de Rennes IRennes Cedex, BretagneFrance

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