Aflatoxin B1 in hepatocellular carcinoma

Area of Science:

• Toxicology
• Hepatology
• Oncology

Background:

• Aflatoxin B1 is a potent mycotoxin known to contaminate food supplies.
• Chronic liver disease, including hepatocellular carcinoma (HCC), poses a significant global health burden.
• Hepatitis B virus infection is a primary risk factor for HCC, but non-viral causes are also important.

Purpose of the Study:

• To investigate the presence and significance of aflatoxin B1 in liver tissue of patients with chronic liver disease.
• To compare aflatoxin B1 levels in patients with hepatocellular carcinoma (HCC) and other chronic liver conditions against healthy controls.

Main Methods:

• Measurement of aflatoxin B1 content in liver tissue samples.
• Comparison of aflatoxin B1 levels between patient groups (HCC, liver fibrosis, hepatitis) and control groups (traffic accidents, drowning, malnutrition, cardiomegaly, lung infection).
• Histological examination of liver tissue to determine the underlying pathology, specifically noting HCC arising in macronodular cirrhosis.

Main Results:

• Significant levels of aflatoxin B1 were detected in liver tissues of patients with chronic liver disease.
• Elevated aflatoxin B1 levels were particularly noted in hepatocellular carcinoma (HCC) patients.
• Notably, significant aflatoxin B1 was found in HCC patients who were hepatitis B surface antigen (HBsAg) negative.
• Histology confirmed that HCC in these cases arose in the context of macronodular cirrhosis.

Conclusions:

• Aflatoxin B1 exposure is associated with chronic liver disease, including HCC.
• The presence of aflatoxin B1 in HBsAg-negative HCC patients highlights its role in non-viral hepatocarcinogenesis.
• Macronodular cirrhosis is a significant predisposing factor for HCC development in the context of aflatoxin exposure.