Cell type specific expression of steroid 5 alpha-reductase 2.
J Urol
; 152(2 Pt 1): 438-42, 1994 Aug.
Article
en En
| MEDLINE
| ID: mdl-8015089
Isozymes of steroid 5 alpha-reductase (5 alpha-reductase) have crucial roles in androgen physiology by synthesizing the potent hormone dihydrotestosterone. The expression pattern of the 5 alpha-reductase type 2 isozyme was determined in genital and extragenital tissues by developing an immunohistochemical assay using formalin-fixed tissue and affinity purified polyclonal antibodies that specifically recognize this isozyme. Expression was detected in basal epithelial and stromal cells of the normal prostate but not in luminal epithelial cells. Stromal cells of the seminal vesicle also expressed the type 2 isozyme. In contrast, staining was detected in epithelial cells of the epididymis but not in the surrounding stroma. Myofibroblasts in foreskin samples of normal and hypospadiac individuals expressed antigen and were distributed in bands throughout the prepuce, suggesting a clonal origin. In most cells the type 2 isozyme exhibited a perinuclear subcellular distribution. However, in liver hepatocytes the protein was distributed throughout the intracellular membrane compartment.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
3-Oxo-5-alfa-Esteroide 4-Deshidrogenasa
/
Isoenzimas
Límite:
Adult
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Aged
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Humans
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Infant
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Male
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Middle aged
Idioma:
En
Revista:
J Urol
Año:
1994
Tipo del documento:
Article
Pais de publicación:
Estados Unidos