Annotation: PANDAS: a model for human autoimmune disease.

Area of Science:

• Pediatric Neurology
• Immunology
• Infectious Diseases

Background:

• Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus (PANDAS) is a syndrome characterized by abrupt onset of tics and/or obsessive-compulsive symptoms in pre-adolescent children.
• The illness course is recurring and remitting, with symptoms temporally related to streptococcal infections.
• Associated neurological findings include adventitious movements, hyperactivity, and emotional lability.

Purpose of the Study:

• To investigate clinical and laboratory evidence supporting the PANDAS syndrome.
• To explore the connection between streptococcal infections and neuropsychiatric symptoms in children, inspired by Sydenham's chorea.

Main Methods:

• Analysis of a large case series for consistent clinical findings.
• Utilizing magnetic resonance imaging (MRI) to examine the syndrome's pathobiology.
• Detecting antibasal ganglia antibodies in acute cases.

Main Results:

• Consistent and predictable clinical findings were observed in a large case series.
• MRI revealed inflammatory changes in the basal ganglia, supporting the postulated pathobiology.
• Antibasal ganglia antibodies, mimicking streptococcal antigen epitopes, were identified in some acute cases.

Conclusions:

• PANDAS remains a controversial diagnostic concept.
• The syndrome has spurred new research into the autoimmune and infectious links to neuropsychiatric symptoms.
• Further investigation is needed to understand the relationship between bacterial pathogens, autoimmunity, and neurological disorders in children.