| Literature DB >> 11732574 |
M S Davidoff1, R Middendorff, Y Koeva, W Pusch, D Jezek, D Müller.
Abstract
Glial cell line-derived neurotrophic factor (GDNF) and its receptors GFRalpha-1 and GFRalpha-2 were found in the human testis during fetal development (15-34 weeks of gestation) and in adult men (51-86 years of age) by means of RT-PCR, immunohistochemistry and Western blot techniques. Gene expression of GDNF could be established in the human testis and immunoreactivity (IR) for GDNF was detectable in Leydig cells, Sertoli cells, some spermatocytes and round spermatids as well as in smooth muscle cells of the wall of arterioles and small arteries. In the adult human testis, Sertoli and Leydig cells showed GFRalpha-1-IR, whereas GFRalpha-2-IR was located exclusively in Leydig cells. Different to man, in the rat GDNF-IR in Sertoli cells was detectable only until postnatal day10, providing evidence for species related variability in the expression of GDNF. These findings suggest a critical role for GDNF during the differentiation of testicular structures and provide evidence for an additional important function in the adult human and rodent testis.Entities:
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Year: 2001 PMID： 11732574
Source DB: PubMed Journal: Ital J Anat Embryol ISSN： 1122-6714