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Chronic active hepatitis of hepatitis B and non-A, non-B etiology
Insights
Hepatitis B core antigen (HBsAg) staining in liver biopsies can help differentiate chronic hepatitis B from acute hepatitis B. This method is particularly useful for identifying hepatitis B in drug addicts.
Area of Science:
- Hepatology
- Virology
- Immunohistochemistry
Background:
- Chronic hepatitis B (CAH) is a significant liver disease.
- Distinguishing between acute hepatitis B (HB) and CAH is crucial for patient management.
- Hepatitis B surface antigen (HBsAg) is a key marker for hepatitis B infection.
Purpose of the Study:
- To evaluate the utility of HBsAg immunohistochemical staining in liver biopsies.
- To determine if HBsAg staining can differentiate between acute hepatitis B and chronic hepatitis B-CAH (CAHB).
- To explore the relationship between HBsAg staining and disease activity in CAH.
Main Methods:
- Sixty-six liver biopsies from patients with CAH were stained for HBsAg using the peroxidase-antiperoxidase technique.
- Patients were categorized based on HBsAg serum positivity.
- Inflammatory activity and HBsAg staining intensity were graded.
Main Results:
- Twenty-three of 30 HBsAg-positive serum biopsies stained positively for HBsAg.
- None of the HBsAg-negative serum biopsies stained positively.
- A significant inverse relationship was found between inflammatory activity and HBsAg staining.
- HBsAg staining did not differ between patients who received steroid therapy and those who did not.
Conclusions:
- HBsAg immunohistochemical staining in liver biopsies can aid in distinguishing acute hepatitis B from CAHB.
- Tissue HBsAg staining is typically negative in acute HB but focally positive in CAHB.
- This technique may be especially valuable in drug addicts and for differentiating superimposed acute hepatitis B on chronic liver disease.
Abstract:
Sixty-six consecutive liver biopsies demonstrating chronic hepatitis (CAH) were stained for the presence of HBsAg using the three-step peroxidaseantiperoxidase technique. Only cases of CAH thought to be attributable to either hepatitis B or non-A, non-B hepatitis were included in this series. Twenty-three of 30 biopsies taken from 24 patients with HBsAg-positive serum stained positively. None of the HBsAg sero-negative cases stained postively. Hepatocytes staining positively for HBsAg were generally few in number and randomly distributed within the liver lobules. Three cases of membranous staining were noted. After grading both the degree of inflammatory activity and the amount of HBsAg staining, we found that a statistically significant inverse relationship exists. The biopsies of six of the GBsAg sero-positive patients who had received steroid therapy for their liver disease did not stain differently from the biopsies of the remaining 18 HGsAg sero-positive patients. Stains for HBsAg may help in distinguishing acute hepatitis B (HB) superimposed on preexisting liver disease from hepatitis B-CAH (CAHB). This distinction may be possible because tissue staining almost always is negative in acute HB, whereas it often is focally positive in CAHB. This application of immunoperoxidase may be especially useful in patients who are drug addicts.