Helicobacter hepaticus, a Recently Recognized Bacterial Pathogen, Associated with Chronic Hepatitis and Hepatocellular Neoplasia in Laboratory Mice
1995

Helicobacter hepaticus and Liver Disease in Mice

Sample size: 48 publication Evidence: moderate

Author Information

Author(s): Jerry M. Rice

Primary Institution: National Cancer Institute, Frederick, Maryland, USA

Hypothesis

How does Helicobacter hepaticus contribute to liver disease and cancer in certain strains of mice?

Conclusion

Helicobacter hepaticus is associated with chronic hepatitis and liver tumors in laboratory mice.

Supporting Evidence

  • Hepatitis prevalence increased to nearly 100% in male A/JCr mice by 1 year of age.
  • Hepatocellular tumors were often present in mice with hepatitis.
  • Helicobacter hepaticus was identified as a new species related to H. pylori.
  • Antibiotic treatments were evaluated for their effectiveness in eradicating H. hepaticus.

Takeaway

Some mice can get really sick and develop tumors because of a tiny germ called Helicobacter hepaticus that lives in their liver.

Methodology

The study involved observing liver disease in specific mouse strains and identifying the presence of Helicobacter hepaticus through various microbiological techniques.

Limitations

The study primarily focused on specific mouse strains, which may not represent all rodents or the potential effects in humans.

Participant Demographics

The study involved male and female mice of various strains, with male mice being more severely affected.

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