Related Experiment Video
Updated: Jun 4, 2026
06:26
Mouse Model of Metabolic Dysfunction-Associated Steatotic Liver Disease with Fibrosis
Published on: July 18, 2025
Helicobacter pylori Infection and Metabolic Dysfunction-Associated Steatotic Liver Disease: A Prospective Study and
Longgang Zhao1, Yun Chen1, Xinyuan Zhang2
1Yale University School of Nursing, Orange, Connecticut.
Summary
Helicobacter pylori infection, particularly CagA-positive strains, is linked to an increased risk of metabolic dysfunction-associated steatotic liver disease (MASLD). This suggests H. pylori may play a role in MASLD development.
Area of Science:
- Gastroenterology
- Hepatology
- Infectious Diseases
Background:
- Metabolic dysfunction-associated steatotic liver disease (MASLD) and Helicobacter pylori (H. pylori) infection are prevalent global health issues.
- The relationship between H. pylori and MASLD is not well-established, with limited data from non-Asian populations.
Purpose of the Study:
- To investigate the association between H. pylori infection and the risk of developing MASLD.
- To evaluate the impact of CagA seropositivity, a marker of H. pylori virulence, on MASLD risk.
Main Methods:
- Analysis of UK Biobank participants (N=4,246) with H. pylori serostatus data.
- Cox proportional hazards models and meta-analysis of eight prospective cohorts (36,145 participants, 6,979 MASLD cases).
- Adjustment for demographic, lifestyle, and cardiometabolic factors.
Main Results:
- H. pylori seropositivity showed a marginal association with increased MASLD risk (HR 1.88).
- CagA seropositivity was significantly associated with higher MASLD risk (HR 2.40).
- Meta-analysis revealed H. pylori infection is associated with a 24% increased MASLD risk (RR 1.24; 95% CI, 1.17-1.31).
Conclusions:
- H. pylori infection, especially CagA-positive strains, is associated with an elevated risk of MASLD.
- Findings suggest a potential role for H. pylori virulence factors in MASLD pathogenesis.
- Results may inform risk stratification and targeted H. pylori eradication strategies for MASLD prevention.
Related Concept Videos
01:26Gastritis II: Pathophysiology
The pathophysiology of gastritis begins with the colonization of the stomach lining by Helicobacter pylori (H. pylori). This bacterium spreads mainly via the oral-oral route through saliva or shared utensils, and can also be transmitted in overcrowded or unhygienic environments through contaminated water, despite its brief survival outside the body.ColonizationOnce ingested, H. pylori enters the stomach and begins colonization by navigating through the mucus layer lining the stomach wall. It...
01:22Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test
In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess the...
01:21Chronic Pancreatitis II: Pathophysiology
Chronic pancreatitis is a progressive and irreversible inflammation of the pancreas, most often caused by long-term alcohol abuse, but it can also be related to ductal obstruction, smoking, or genetic factors.Chronic pancreatitis occurs when the pancreas is repeatedly exposed to harmful agents like alcohol, smoking, ductal obstruction, or genetic predisposition. These factors lead to the release of toxic metabolites and inflammatory cytokines, sustaining chronic inflammation in the pancreatic...
01:24Cirrhosis II: Pathophysiology
Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to structural...
01:20Cholecystitis
Cholecystitis is inflammation of the gallbladder, most commonly caused by obstruction of the cystic duct. This blockage prevents bile from draining, leading to gallbladder distension, inflammation, and potentially serious complications. This condition may present acutely or chronically and can happen with or without gallstones.EtiologyAbout 95% of cholecystitis cases are calculous, caused by gallstones blocking the cystic duct, leading to bile accumulation and inflammation of the gallbladder...
01:28Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies
Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.