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Related Concept Videos

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Related Experiment Video

Updated: Apr 6, 2026

Analyzing the Parkinson's Disease Mouse Model Induced by Adeno-associated Viral Vectors Encoding Human α-Synuclein
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Appendectomy may delay Parkinson's disease Onset.

Alexandre Mendes1,2, Alexandra Gonçalves1,2, Nuno Vila-Chã1,2

  • 1Serviço de Neurologia, Centro Hospitalar do Porto, Porto, Portugal.

Movement Disorders : Official Journal of the Movement Disorder Society
|August 1, 2015
PubMed
Summary
This summary is machine-generated.

Appendectomy may influence the onset of Parkinson's disease (PD), particularly in late-onset cases. This study suggests a potential link between appendix removal and delayed PD symptom development in older individuals.

Keywords:
Parkinson's diseaseappendectomydisease onsetvermiform appendixα-synuclein

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Area of Science:

  • Neurology
  • Gastroenterology
  • Epidemiology

Background:

  • Alpha-synuclein (α-Syn) accumulation in the vermiform appendix suggests it as a potential origin for Parkinson's disease (PD) pathology.
  • The vermiform appendix's high α-Syn abundance positions it as a key anatomical site for PD initiation.

Purpose of the Study:

  • To investigate the hypothesis that a history of appendectomy may influence the clinical onset of Parkinson's disease (PD).

Main Methods:

  • A cohort of 295 Parkinson's disease (PD) patients was surveyed for appendectomy history.
  • Cox's regression analysis with a time-dependent covariate was employed to assess the impact of appendectomy on age at PD onset.

Main Results:

  • Appendectomy was reported by 11.5% of PD patients prior to disease onset.
  • No significant effect of appendectomy on PD onset age was observed in the overall cohort.
  • A significant association was found in late-onset PD patients (≥55 years), where appendectomy correlated with a delay in symptom onset (P=0.040).
  • No association was detected in the young-onset PD group (P=0.663).

Conclusions:

  • A potential relationship exists between appendectomy and the onset of Parkinson's disease, specifically within the late-onset PD subgroup.
  • The findings suggest that appendectomy might be associated with a delayed clinical presentation of Parkinson's disease in older individuals.