Platelet-derived growth factor A and B chains and the alpha and beta receptors in prostatic intraepithelial neoplasia.
BACKGROUND
The objective of this study was to evaluate the expression of platelet-derived growth factor (PDGF A, PDGF B) and their receptors (PDGF alpha, PDGF beta) in prostatic intraepithelial neoplasia (PIN) and adenocarcinoma.


METHODS
Peroxidase-antiperoxidase immunoperoxidase labeling was used to detect the extent of antibody labeling in 29 different high grade PIN specimens.


RESULTS
PDGF A and PDGF alpha were uniformly expressed in glandular epithelial and stromal cells, whereas PDGF B was not expressed by either tissue. However, PDGF beta was lightly expressed in a uniform manner by both the glandular epithelial and stromal cells.


CONCLUSIONS
The data suggest that an autocrine loop may exist in which the epithelial cells of high-grade PIN express PDGF AA and PDGF alpha to modulate growth of precancerous lesions.
Department of Pathology, Medical College of Pennsylvania, Philadelphia 19129, USA.
K
K
Fudge
D G
DG
Bostwick
M E
ME
Stearns
D002278:Carcinoma in Situ / Q000737:chemistry*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007124:Immunoenzyme Techniques; D008297:Male; D010982:Platelet-Derived Growth Factor / Q000032:analysis*; D011471:Prostatic Neoplasms / Q000737:chemistry*; D011518:Proto-Oncogene Proteins / Q000032:analysis*; D020574:Proto-Oncogene Proteins c-sis; D020796:Receptor, Platelet-Derived Growth Factor alpha; D020797:Receptor, Platelet-Derived Growth Factor beta; D017479:Receptors, Platelet-Derived Growth Factor / Q000032:analysis*
D010982:Platelet-Derived Growth Factor; D011518:Proto-Oncogene Proteins; D020574:Proto-Oncogene Proteins c-sis; C075278:platelet-derived growth factor A; D020796:Receptor, Platelet-Derived Growth Factor alpha; D020797:Receptor, Platelet-Derived Growth Factor beta; D017479:Receptors, Platelet-Derived Growth Factor