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The association between infectious burden and Parkinson's disease: A case-control study

Xian-Le Bu1, Xin Wang1, Yang Xiang1

  • 1Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China.

Parkinsonism & Related Disorders
|June 4, 2015
PubMed
Abstract

Insights

Infections like cytomegalovirus (CMV) and Epstein Barr virus (EBV) are linked to Parkinson's disease (PD). Higher infectious burden in PD patients correlated with disease severity and inflammation.

Area of Science:

  • Neuroscience
  • Infectious Diseases
  • Immunology

Background:

  • The precise causes of Parkinson's disease (PD) are not fully understood.
  • Investigating potential environmental factors, such as infections, is crucial for understanding PD etiology.

Purpose of the Study:

  • To investigate the association between exposure to common pathogenic infections and Parkinson's disease.
  • To determine if an increased infectious burden is a risk factor for PD development.

Main Methods:

  • Serum antibody titers to cytomegalovirus (CMV), Epstein Barr virus (EBV), herpes simplex virus type-1 (HSV-1), Borrelia burgdorferi, Chlamydophila pneumoniae, and Helicobacter pylori were measured using ELISA.
  • Infectious burden (IB) was calculated as a composite serologic measure of exposure to these pathogens in 131 PD patients and 141 controls.

Main Results:

  • PD patients exhibited significantly higher seropositivity rates for multiple pathogens compared to controls.
  • Increased infectious burden, including bacterial and viral loads, was independently associated with Parkinson's disease.
  • Higher IB correlated with lower Schwab and England scores and elevated levels of alpha-synuclein and inflammatory cytokines (IL-1β, IL-6) in PD patients.

Conclusions:

  • A significant association exists between infectious burden (CMV, EBV, HSV-1, B. burgdorferi, C. pneumoniae, H. pylori) and Parkinson's disease.
  • These findings support the hypothesis that infections may play a role in the etiology of Parkinson's disease.
Keywords:
Alpha-synucleinCase-control studyInfectionsParkinson's diseaseRisk factors

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