title: Substance P- and neuron-specific enolase-like immunoreactivity of rodent Leydig cells in tissue section and cell culture.
abstract: Comparative immunocytochemical studies concerning the presence of a neurotransmitter (substance P), and a marker of neuroendocrine cells (neuron-specific enolase), in the Leydig cells of 3 mammalian species (golden hamster, guinea pig, and rat) were carried out on tissue sections and cell cultures. Substance P(SP)-like immunoreactivity (-LI) was found to be present in both fetal and adult generation of Leydig cells in hamster and guinea pig, while neuron-specific enolase (NSE)-LI was detected in Leydig cells of the 3 species at all stages studied: fetal, neonatal and adult. In primary cultures of Leydig cells isolated from adult hamster testes, SP- and NSE-LI was also established. This result was considered as an indirect evidence for the synthesis of the substances under study by the steroidogenic cells of the testis. A comparison of these results with data obtained in vivo suggests that Leydig cells may be related to the APUD- or the diffuse neuroendocrine system.
authors.affiliation: Institute of Cell Biology and Morphology, Bulgarian Academy of Sciences, Sofia.
authors.forename: P
authors.initials: P
authors.lastname: Angelova
authors.forename: M
authors.initials: M
authors.lastname: Davidoff
authors.forename: K
authors.initials: K
authors.lastname: Baleva
authors.forename: M
authors.initials: M
authors.lastname: Staykova
mesh_terms: D000818:Animals; D002455:Cell Division; D002478:Cells, Cultured; D006224:Cricetinae; D005333:Fetus; D006168:Guinea Pigs; D007150:Immunohistochemistry / Q000379:methods; D007985:Leydig Cells / Q000166:cytology* / Q000201:enzymology; D008297:Male; D008647:Mesocricetus; D010751:Phosphopyruvate Hydratase / Q000378:metabolism*; D051381:Rats; D011919:Rats, Inbred Strains; D013373:Substance P / Q000032:analysis*
chemical_list: D013373:Substance P; D010751:Phosphopyruvate Hydratase