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Updated: Jun 16, 2026

Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance
Published on: March 7, 2025
Clinical and biochemical parameters related to cardiovascular disease after Helicobacter pylori eradication
R Pellicano1, E Oliaro, S Fagoonee
1Gastro-Hepatology Unit, S. Giovanni Battista (Molinette) Hospital, Turin, Italy. rinaldo_pellican@hotmail.com
Insights
Eradicating Helicobacter pylori (H.pylori) infection improved cardiovascular risk factors like HDL-C and C-reactive protein. This suggests a potential link between H.pylori and ischemic heart disease (IHD) risk, warranting further research.
Area of Science:
- Cardiology
- Gastroenterology
- Microbiology
Background:
- Established risk factors do not fully explain ischemic heart disease (IHD) pathogenesis.
- A potential link between Helicobacter pylori (H.pylori) infection and IHD exists, but mechanisms are unclear.
- H.pylori may influence IHD through proinflammatory or metabolic pathways.
Purpose of the Study:
- To investigate the impact of H.pylori eradication on clinical and biochemical parameters associated with IHD.
- To assess changes in cardiovascular risk markers following successful H.pylori treatment.
Main Methods:
- A cohort of 496 patients with H.pylori-positive dyspepsia/peptic ulcer disease underwent eradication therapy.
- Clinical (BMI, diastolic blood pressure) and biochemical (CRP, fibrinogen, lipids, glucose) parameters were measured pre-eradication and annually for up to five years.
- Statistical analysis utilized the Student's t test to compare pre- and post-eradication values.
Main Results:
- High-density lipoprotein cholesterol (HDL-C) significantly increased (P=0.02).
- C-reactive protein and fibrinogen levels significantly decreased (P<0.0001).
- Body mass index (BMI) and diastolic blood pressure showed significant increases (P=0.032 and P=0.039, respectively).
Conclusions:
- H.pylori eradication is associated with favorable changes in several IHD-related clinical and biochemical parameters.
- The findings suggest a potential role of H.pylori in cardiovascular health.
- Further large-scale, randomized interventional studies are necessary to establish a causal relationship between H.pylori and IHD.
Aim:
Since the major established risk factors explain the pathogenesis of ischemic heart disease (IHD) in a proportion of cases, it is crucial to search for other causal mechanisms. The possible link between IHD and Helicobacter pylori (H.pylori) infection has been reported. However, the precise mechanism of this potential relationship, by a proinflammatory activity or metabolic disorder, is unclear. In order to investigate this issue, the authors assessed changes in clinical and biochemical parameters related to IHD after bacterial eradication.
Methods:
A total of 496 patients (281 males; mean age 59.7+/-2.3) with H.pylori-positive dyspepsia and/or peptic ulcer were studied after cure of the bacterium. H.pylori status was determined by histology or 13C-urea breath testing. Examinations for body mass index, diastolic blood pressure and blood testing (C-reactive protein, fibrinogen, triglycerides, total cholesterol, high-density and low-density lipoprotein cholesterol, fasting glucose) were performed before eradication and annually for up to five years thereafter. For statistical analyses, the Student's t test was performed.
Results:
HDL-C increased (P=0.02) while C-reactive protein and fibrinogen levels diminished (P<0.0001) significantly. BMI and diastolic blood pressure increased in a significant (P=0.032 and P=0.039 respectively) manner compared to baseline.
Conclusions:
H.pylori eradication is associated with modification of some clinical and biochemical parameters related to IHD during a follow-up of five years. There is a need for large interventional randomized studies in order to prove a causal association.
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