[Helicobacter pylori 25 years after (1983 -2008): epidemiology, microbiology, pathogenics, diagnostics and treatment]

Area of Science:

• Microbiology
• Epidemiology
• Infectious Diseases

Background:

• This bacterial infection has existed for at least 58,000 years, with prevalence varying significantly by nation.
• In developing countries, infection is typically acquired during early childhood through fecal-oral, oral-oral, or gastro-oral routes.
• Studies in Peru indicate uniform prevalence across coastal, jungle, and sierra regions, identifying water as a significant transmission vector.

Purpose of the Study:

• To detail the microbiology, epidemiology, pathogenesis, and therapy of a long-standing bacterial infection.
• To identify predominant bacterial strains and their genetic characteristics.
• To explore diagnostic methods and treatment strategies, including rescue therapies and management of recurrence.

Main Methods:

• Analysis of inflammatory responses involving neutrophils, lymphocytes (T and B cells), plasma cells, and macrophages.
• Utilization of both invasive and non-invasive diagnostic procedures.
• Review of various treatment schemes, including first, second, and third-line therapies, alongside alternative and rescue approaches.

Main Results:

• Identification of three predominant bacterial strains in Spanish, Asiatic, and Indian populations.
• Characterization of the bacterial DNA, comprising 1.65 million bases.
• Description of various virulence factors, enzymes, and toxins associated with the bacteria.

Conclusions:

• The study provides a comprehensive overview of a persistent bacterial pathogen, encompassing its historical presence, global spread, and transmission dynamics.
• Understanding the identified strains, virulence factors, and transmission routes, particularly waterborne infection in Peru, is crucial for public health.
• Effective therapeutic strategies, including multi-line treatments and management of reinfection, are essential for controlling this infection.