Infections or Sepsis Preceding Clinically Diagnosed α-Synucleinopathies: A Case-Control Study

Area of Science:

• Neuroscience
• Epidemiology
• Infectious Disease

Background:

• The link between infections and Parkinson's disease is debated.
• The impact of severe infections on other α-synucleinopathies remains understudied.

Purpose of the Study:

• To investigate the association between hospitalization-requiring infections or sepsis and the risk of developing α-synucleinopathies.
• To clarify the role of severe infections in the etiology of Parkinson's disease and related disorders.

Main Methods:

• Utilized the Rochester Epidemiology Project medical records-linkage system (1991-2010).
• Identified α-synucleinopathy cases and matched them to controls by age and sex.
• Reviewed medical records for infections or sepsis preceding motor symptom onset.
• Employed conditional logistic regression for statistical analysis, adjusting for covariates.

Main Results:

• No significant association was found between infection-related hospitalization and α-synucleinopathies (OR: 1.05, P=0.76).
• Sepsis was not associated with an increased risk of α-synucleinopathies (OR: 0.86, P=0.70).
• Stratified analyses by α-synucleinopathy type, sex, and age yielded similar null findings.

Conclusions:

• This study found no evidence that infections requiring hospitalization or sepsis contribute to the development of α-synucleinopathies.
• The findings do not support a causal role for severe infections in the onset of Parkinson's disease or related α-synucleinopathies.