Expression level and significance of Src-homology2 domain phosphatase-1 and -2 in condyloma acuminatum / 中华传染病杂志

ABSTRACT

Objective To investigate the different expression pattern of Src-homology2 domain phosphatase (SHP)-1 and SHP-2 in human papiilomavirus (HPV)6/11 infected condyloma acuminatum (CA) and the significance of the difference. Methods HPV6/11 related CA cases were diagnosed by in situ hybridization. The expression and distribution of SHP-1 and SHP-2 were examined by SP immunohistochemistry technique in skin samples from 40 HPV 6/11 positive CA cases and 20 healthy control (foreskins). Results The positive rates of SHP-1 and SHP-2 were 80% and 85% respectively in CA, which were significantly higher than those in healthy control cases (only 35% and 30%, respectively, X2=11.87,P<0.01; X2 =18. 15,P<0. 01) . The SHP-1 and/or SHP-2 positive cells in CA skin lesions were mainly distributed in prickle layer, showing as brown yellow, with the positive staining located in cytoplasm. Contrastively, the SHP-1 and/or SHP-2 positive cells in healthy controls were rare and mainly distributed in basal layer, showing as pale yellow with the positive staining located in cytoplasm. There was no significant correlation between the expression of SHP-1 and SHP-2 in CA( rs = 1.0, P>0.05 ). Conclusion The expressions of SHP-1 and SHP-2 increase in HPV6/11 positive CA, which suggest that with the infection of HPV6/11, SHP-1 and SHP-2 may play a regulatory role in the proliferation of keratinocytes.