Evaluation of HBV and HCV antigens expression in correlation with HBV DNA and HCV RNA occurrence in liver biopsy specimens of patients with chronic hepatitis type B and chronic hepatitis type C, respectively.

Abstract:

MATERIAL AND METHODS:The material studied consisted of single liver biopsy specimens and serum samples from 97 patients diagnosed by clinical and serological criteria as having chronic hepatitis of either type B (38 patients seropositive for HBsAg) or type C (59 patients seropositive for anti-HCV). Diagnosis of chronic hepatitis, including grading and staging of the process, was established by histopathological examination of routinely stained serial paraffin sections. The expression of HBV and HCV antigens was detected in frozen sections by amplified immunoperoxidase method (EnVision, DAKO) with the use of monoclonal anti-HBs antibodies (DAKO), polyclonal anti-HBc antibodies (Biogenex) and FITC-labeled human antibodies to HCV antigens. HBV DNA and HCV RNA were searched for in tissue homogenates with PCR (In Gen; Terpol, Sieradz) and RT PCR (Cobas Amplicor HCV RNA, Roche), respectively. RESULTS:HBsAg was detected in all and HBcAg in 26 of the 38 biopsy specimens with chronic hepatitis type B from patients who were seropositive for HBsAg and anti-HBc, and for either HBeAg (25 cases) or anti-HBe (13 cases). HBV DNA was identified in 32 out of 38 liver biopsy specimens. Out of the 32 HBV DNA positive specimens, 6 that had been obtained from patients seropositive for anti-HBe, lacked HBcAg expression. HCV antigens were found in 27 (50%) out of 54 specimens which showed the presence of HCV RNA. CONCLUSIONS:These results are indicative for a strong positive correlation between the expression of HBV antigens and that of HBV DNA in liver biopsy specimens. The detection of HCV antigens has proved to positively correlate with that of HCV RNA in 50% of the specimens examined. It appears, therefore, that testing of liver biopsy specimens for HBV and HCV antigens may, in a significant proportion of cases, extend the histopathological diagnosis as to include identification of the etiologic factor.

journal_name

Med Sci Monit

authors

Walewska-Zielecka B,Swiderska H,Jończyk M,Nowosławski A

subject

Has Abstract

pub_date

2001-05-01 00:00:00

pages

147-50

eissn

1234-1010

issn

1643-3750

journal_volume

7 Suppl 1

pub_type

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