The second brain: The connection between gut microbiota composition and multiple sclerosis.

Area of Science:

• Neuroimmunology
• Microbiology
• Gastroenterology

Background:

• Gut microbiota composition influences central nervous system (CNS) and immune functions.
• Emerging research links gut microbiota alterations to multiple sclerosis (MS) and its animal model, experimental autoimmune encephalomyelitis (EAE).
• MS patients frequently exhibit dysbiosis, an imbalance in gut bacteria.

Purpose of the Study:

• To review and synthesize current research on the relationship between gut microbiota composition and MS.
• To explore potential mechanisms underlying the gut-brain axis in MS pathogenesis.

Main Methods:

• Literature review of studies investigating gut microbiota in MS and EAE.
• Analysis of findings regarding bacterial phyla proportions in MS patients versus healthy controls.

Main Results:

• Consistent evidence indicates dysbiosis in patients with MS.
• Specific alterations in bacterial phyla proportions are observed in the digestive tracts of MS patients.
• The gut microbiota composition is increasingly recognized as a factor in MS.

Conclusions:

• The gut microbiota plays a significant role in the development or progression of MS.
• Further research into the gut microbiota's influence on MS pathogenesis is warranted.
• Targeting the gut microbiota may offer novel therapeutic strategies for MS.