An insight into intestinal mucosal microbiota disruption after stroke

Area of Science:

• Microbiology
• Neuroscience
• Gastroenterology

Background:

• Bacterial translocation from the gut microbiota to peripheral tissues contributes to post-stroke infections.
• The role of the intestinal mucosal microbiota in regulating bacterial translocation after stroke remains unclear.

Purpose of the Study:

• To investigate the impact of stroke on the composition and function of the intestinal mucosal microbiota.
• To determine if stroke induces changes in gut bacteria that could influence post-stroke infections.

Main Methods:

• Comparison of gastrointestinal tract (GIT) mucosal microbiota composition between sham-operated and post-stroke mice at 24 hours post-surgery.
• Analysis of microbial community structure at phylum and species levels.
• Prediction of functional potential using PICRUSt (Phylostrata-based microbial community analysis).

Main Results:

• Stroke significantly altered GIT mucosal microbiota composition compared to sham controls.
• Key changes included increased abundance of Akkermansia muciniphila and Clostridial species.
• Predicted functions showed increased pathways for infectious diseases, membrane transport, and xenobiotic degradation.

Conclusions:

• Stroke induces profound and widespread alterations in the intestinal mucosal microbiota.
• These stroke-induced microbial shifts may play a role in the pathogenesis of post-stroke infections.
• Understanding these changes could reveal novel therapeutic targets to improve patient outcomes.