Public Health

Area of Science:

• Microbiome research
• Gerontology
• Neuroscience

Background:

• Cognitive frailty (CF) involves physical frailty and cognitive impairment, linked to gut dysbiosis and increased intestinal permeability.
• The gut microbiome influences the gut-brain axis, impacting neuroinflammation and neurotransmitter production.
• Lifestyle interventions may modulate gut microbiota composition and function.

Purpose of the Study:

• To investigate the impact of a 6-month multidomain intervention on gut microbiota composition in individuals with cognitive frailty.
• To explore the relationship between specific gut microbial genera and psychosocial parameters.

Main Methods:

• 27 participants with CF were divided into control and intervention groups.
• Stool samples were analyzed using 16S rRNA sequencing.
• Statistical analyses included ANOVA and Pearson's correlation.

Main Results:

• The intervention group showed a significant increase in the Blautia genus compared to the control group.
• Blautia abundance was negatively correlated with depression and loneliness scores.
• Prevotella genera positively correlated with depression scores.

Conclusions:

• Lifestyle interventions positively impact gut microbiota composition in older adults with CF.
• Blautia enrichment may be a biomarker or therapeutic target for improving psychosocial well-being in CF.
• Further research is needed to elucidate the mechanisms linking gut microbiota and psychosocial outcomes.