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Viral antibodies in the sera from patients with Parkinson disease
Abstract:
An assay of antibodies to 15 various viruses and mycoplasma pneumoniae was performed on the serum specimens from 441 patients with Parkinson disease and from 443 healthy controls matched by sex, age, and place of residence, or from a representative group of these matched pairs. The main finding was a higher herpes simplex complement-fixing antibody level in patients with Parkinson disease than in controls. Patients with Parkinson disease had higher herpes simplex antibody titers more often than did their matched controls, and the matched controls, respectively, had low titers more often than the patients. The mean herpes simplex antibody titer (log2) of the patients (4.9) was significantly higher than that of controls (4.6) (p less than 0.01). This difference was also demonstrable when matched pairs were analysed for paired differences of herpes simplex antibody titers. For other viral CF and HI antibodies studied and for mycoplasma pneumoniae CF antibody, there were no significant differences either in the mean titers or in the distribution of individual titer values between the patients with Parkinson disease and the matched controls.
Insights
Individuals with Parkinson disease exhibit elevated herpes simplex virus antibody levels compared to healthy individuals. This study investigated antibody titers in Parkinson
Area of Science:
- Neuroscience
- Immunology
- Epidemiology
Background:
- Parkinson disease (PD) is a progressive neurodegenerative disorder.
- The role of infectious agents, particularly viruses, in PD pathogenesis remains an area of active research.
- Herpes simplex virus (HSV) has been previously implicated in neurological conditions.
Purpose of the Study:
- To investigate potential associations between antibody levels to various viruses and Mycoplasma pneumoniae and Parkinson disease.
- To compare antibody titers in patients with Parkinson disease against well-matched healthy controls.
Main Methods:
- Serum samples from 441 Parkinson disease patients and 443 matched healthy controls were analyzed.
- Antibody levels to 15 different viruses and Mycoplasma pneumoniae were quantified using complement fixation (CF) and hemagglutination inhibition (HI) assays.
- Statistical analyses were performed to compare mean titers and titer distributions between patient and control groups.
Main Results:
- A significantly higher level of herpes simplex virus (HSV) complement-fixing antibodies was observed in Parkinson disease patients compared to controls.
- Patients with PD more frequently had high HSV antibody titers, while controls more often had low titers.
- No significant differences in antibody titers were found for other tested viruses or Mycoplasma pneumoniae.
Conclusions:
- Elevated herpes simplex virus antibody levels may be associated with Parkinson disease.
- Further research is warranted to explore the potential role of HSV in the etiology or progression of Parkinson disease.
- The findings suggest a specific immune response to HSV in individuals with Parkinson disease.