Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections and gut microbiota...

Area of Science:

• Neuroimmunology
• Microbiome Research
• Pediatric Psychiatry

Background:

• Post-streptococcal autoimmune neuropsychiatric disorders (PANDAS) are linked to Group A Streptococcus infections and autoimmune responses targeting the basal ganglia.
• Limited research exists on the gut microbiota in PANDAS patients, but some studies suggest streptococcal infections can alter gut microbiota, potentially causing chronic inflammation affecting brain function.

Purpose of the Study:

• To explore the relationship between PANDAS and gut microbiota composition.
• To review current literature on how gut microbiota may influence PANDAS pathogenesis and symptoms.

Main Methods:

• This narrative review synthesizes existing research on PANDAS, gut microbiota, and neuroinflammation.
• Analysis of studies examining microbial diversity, bacterial populations, and associated metabolic functions in PANDAS.

Main Results:

• PANDAS patients may exhibit reduced microbial diversity and altered bacterial populations in their gut microbiota.
• Changes in microbiota affect metabolic functions critical for neuroinflammation.
• Elevated markers of oxidative stress (sNOX2-dp, isoprostanes) and lipopolysaccharides (LPS) suggest increased inflammation.

Conclusions:

• A potential link exists between gut microbiota alterations and neuropsychiatric symptoms in PANDAS.
• Dietary interventions, including the Mediterranean diet and increased fiber intake, may help reduce inflammation and improve outcomes in PANDAS patients.