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Paracrine regulation of testicular function
J M Saez1, M H Perrard-Sapori, P G Chatelain
1INSERM U-307, Hôpital Debrousse, Lyon, France.
Journal of Steroid Biochemistry
|January 1, 1987
Summary
Testicular cells interact to control reproductive functions. Sertoli cells influence Leydig cell steroidogenesis and growth, while germ cells modulate Sertoli cell activity, revealing a complex regulatory network.
Area of Science:
- Reproductive biology
- Endocrinology
- Cell biology
Background:
- Testicular function relies on intricate cell-cell communication.
- Paracrine signaling is crucial for regulating testicular activities.
Purpose of the Study:
- To review and synthesize data on intercellular interactions within the testis.
- To elucidate the role of these interactions in paracrine control of testicular functions.
Main Methods:
- Review of experimental data from various approaches.
- Analysis of spent media and co-culture experiments involving Sertoli and Leydig cells.
- Investigation of the effects of hormones (FSH, insulin) and peptides (Somatomedin-C).
Main Results:
- Sertoli cells secrete factors affecting Leydig cell steroidogenesis and function, enhanced by FSH.
- Co-culture with Sertoli cells promotes Leydig cell growth and function.
- Germ cell stage influences Sertoli cell activity, which in turn affects Leydig cells.
Conclusions:
- Multiple testicular cell interactions mediate paracrine control of testicular functions.
- Sertoli cells play a key role in regulating Leydig cell steroidogenesis and growth.
- A bidirectional communication network exists between germ cells and Sertoli cells, impacting overall testicular function.