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Updated: May 8, 2026

Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance
Published on: March 7, 2025
Extragastric diseases and Helicobacter pylori
Claire Roubaud Baudron1, Francesco Franceschi, Nathalie Salles
1Université de Bordeaux, Laboratoire de Bactériologie, Bordeaux, France; Pôle de Gérontologie Clinique, Bordeaux, France; INSERM U853, Bordeaux, France.
Helicobacter pylori infection is linked to diseases beyond the gut. This bacterium may influence conditions like cardiovascular disease, diabetes, and neurological disorders through inflammation and nutrient absorption interference.
Area of Science:
- Microbiology
- Immunology
- Gastroenterology
Background:
- Helicobacter pylori (H. pylori) is a bacterium primarily known for gastrointestinal infections.
- Emerging evidence suggests H. pylori's influence extends to extra-intestinal diseases.
- The bacterium's mechanisms include inducing chronic inflammation and molecular mimicry.
Purpose of the Study:
- To review the association between H. pylori infection and non-gastrointestinal diseases.
- To explore the potential impact of H. pylori on various systemic conditions.
Main Methods:
- Literature review of recent studies linking H. pylori to extra-intestinal manifestations.
- Analysis of proposed pathogenic mechanisms of H. pylori in systemic diseases.
Main Results:
- H. pylori is associated with hematologic conditions like immune thrombocytopenic purpura, sideropenic anemia, and vitamin B12 deficiency.
- Promising associations are emerging between H. pylori and cardiovascular diseases, diabetes mellitus, hepatobiliary diseases, and neurologic disorders.
- Chronic inflammation and altered nutrient/drug absorption are key proposed mechanisms.
Conclusions:
- H. pylori infection may play a role in a broader spectrum of diseases than previously recognized.
- Further research is warranted to elucidate the causal links and therapeutic implications for these extra-intestinal conditions.
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