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Patterns of chronic liver disease in Kuwait with special reference to localisation of hepatitis B surface antigen
Insights
In Kuwait, chronic active hepatitis and cirrhosis are prevalent liver diseases. Immunohistology effectively detects Hepatitis B surface antigen (HBsAg), crucial for diagnosing chronic liver disease.
Area of Science:
- Hepatology
- Immunohistochemistry
- Viral Hepatitis Research
Background:
- Liver biopsy analysis in Kuwait revealed a high prevalence of chronic active hepatitis (19%) and cirrhosis (40%).
- Hepatitis B virus (HBV) infection is a significant global health concern, often leading to chronic liver disease.
Purpose of the Study:
- To characterize the spectrum of liver diseases in the Kuwait region.
- To evaluate and compare histochemical (orcein) and immunohistochemical (peroxidase-antiperoxidase - PAP) methods for detecting Hepatitis B surface antigen (HBsAg).
- To assess the association between HBsAg positivity and chronic liver disease in Kuwait.
Main Methods:
- Review of 256 consecutive liver biopsy specimens from Kuwait.
- Histochemical staining using the orcein method for HBsAg detection.
- Immunohistochemical staining using the peroxidase-antiperoxidase (PAP) technique for HBsAg detection.
- Comparison of immunohistology results with serology in 52 patients.
Main Results:
- The PAP technique demonstrated superior quality, quantity, and specificity for HBsAg detection compared to the orcein method.
- HBsAg positivity rates were 29% in chronic hepatitis and 27% in cirrhosis cases.
- Immunohistology identified HBsAg in nearly one-third of chronic active liver disease cases also positive by serology.
Conclusions:
- Immunohistochemistry is a sensitive and valuable tool for detecting HBsAg, particularly in retrospective studies.
- Hepatitis B infection is frequently associated with the development of chronic liver disease in the Kuwaiti population.
- The study highlights the utility of advanced immunohistological techniques in understanding liver disease etiology.
Abstract:
Two hundred and fifty six consecutive liver biopsy specimens (without secondary malignancy) collected over five years were reviewed to characterise the pattern of liver diseases encountered in the Kuwait region. A relatively high proportion of chronic active hepatitis (19%) and cirrhosis (40%) was found. Localisation of HBsAg was carried out by the histochemical orcein method and the immunohistological peroxidase-antiperoxidase (PAP) procedure. The PAP technique was superior to orcein both in quality and quantity in addition to its specificity. Three immunohistological staining patterns were observed: diffuse pancytoplasmic , partial perinuclear, and peripheral cytoplasmic. The positivity rate of HBsAg in chronic hepatitis was 29% and 27%, in all cases of cirrhosis. The results of immunohistology and serology of HBsAg were compared in 52 patients in whom both tests were carried out; almost one third of chronic active liver diseases were positive by both methods. Our data clearly show the sensitivity of immunohistology and its value in detecting HBsAg, especially in retrospective studies where serology is not always available. Additionally, the data show that hepatitis B infection is often associated with the development of chronic liver disease in Kuwait.