Cognitive function in UK adults seropositive for Helicobacter pylori

Area of Science:

• Neuroscience
• Infectious Diseases
• Gerontology

Background:

• Helicobacter pylori (H. pylori) is linked to gastric conditions and emerging evidence suggests a connection to cognitive decline.
• Previous research indicates potential associations between H. pylori infection and reduced cognitive function or dementia.

Purpose of the Study:

• To investigate the relationship between H. pylori seropositivity and serointensity with cognitive performance in adults aged 40-70.
• To explore how the presence and concentration of H. pylori antibodies correlate with specific cognitive task outcomes.

Main Methods:

• Utilized data from the UK Biobank, including a cohort of adults aged 40-70.
• Assessed H. pylori seropositivity (presence/absence) and serointensity (antibody concentration).
• Evaluated cognitive function through various tasks measuring memory, reasoning, and problem-solving.

Main Results:

• H. pylori seropositivity and serointensity were associated with worse performance on Numeric memory and Reasoning tasks.
• Increased H. pylori serointensity correlated with more errors on the Pairs matching test.
• Conversely, H. pylori seropositivity was linked to better performance on the Tower rearrangement task.

Conclusions:

• H. pylori infection status and antibody levels may influence cognitive function in middle-aged and older adults.
• Findings suggest a complex association, with potential negative impacts on certain cognitive domains.
• Further research is warranted to elucidate the mechanisms underlying the H. pylori-cognition link.