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Carcinogenesis, apoptosis and cell proliferation

P Correa1, M J Miller

  • 1Department of Pathology, Louisiana State University Medical Center, New Orleans 70112-1393, USA.

British Medical Bulletin
|May 30, 1998
PubMed
Summary
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Biological agents like viruses and bacteria are linked to cancer. Helicobacter pylori is a recognized bacterial carcinogen, but experimental proof of its cancer-causing mechanisms is still hypothetical.

Area of Science:

  • Oncology
  • Microbiology
  • Infectious Diseases

Background:

  • Viruses are known carcinogens, linked to lymphomas, hepatocarcinomas, and cervical cancers.
  • Chronic infections and inflammation are suspected contributors to human carcinogenesis.
  • Helicobacter pylori is the first bacterium identified as a human carcinogen, primarily through epidemiological data.

Purpose of the Study:

  • To explore the role of biological agents, particularly Helicobacter pylori, in human carcinogenesis.
  • To highlight the current lack of experimental evidence for H. pylori carcinogenesis mechanisms.

Main Methods:

  • Review of epidemiological evidence linking H. pylori to cancer.
  • Discussion of the hypothetical mechanisms of H. pylori-induced carcinogenesis.

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  • Comparison with established viral carcinogens.

    • Main Results:

    • Epidemiological studies strongly suggest Helicobacter pylori causes cancer.
    • Experimental evidence demonstrating H. pylori's carcinogenic mechanisms is currently absent.
    • The mechanisms underlying H. pylori-associated carcinogenesis remain hypothetical.

    Conclusions:

    • Helicobacter pylori is recognized as a human carcinogen based on epidemiological findings.
    • Further research is needed to elucidate the experimental mechanisms of H. pylori carcinogenesis.
    • Understanding these mechanisms is crucial for developing targeted prevention and treatment strategies.