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Updated: Jul 25, 2026

The Use of Primary Human Fibroblasts for Monitoring Mitochondrial Phenotypes in the Field of Parkinson's Disease
Published on: October 3, 2012
Microbiome, Parkinson's Disease and Molecular Mimicry
Fabiana Miraglia1,2, Emanuela Colla3
1Department of Pharmacy, University of Pisa, via Bonanno 6, 56126 Pisa, Italy. miragliafabiana@gmail.com.
Abstract:
Parkinson's Disease (PD) is typically classified as a neurodegenerative disease affecting the motor system. Recent evidence, however, has uncovered the presence of Lewy bodies in locations outside the CNS, in direct contact with the external environment, including the olfactory bulbs and the enteric nervous system. This, combined with the ability of alpha-synuclein (αS) to propagate in a prion-like manner, has supported the hypothesis that the resident microbial community, commonly referred to as microbiota, might play a causative role in the development of PD. In this article, we will be reviewing current knowledge on the importance of the microbiota in PD pathology, concentrating our investigation on mechanisms of microbiota-host interactions that might become harmful and favor the onset of PD. Such processes, which include the secretion of bacterial amyloid proteins or other metabolites, may influence the aggregation propensity of αS directly or indirectly, for example by favoring a pro-inflammatory environment in the gut. Thus, while the development of PD has not yet being associated with a unique microbial species, more data will be necessary to examine potential harmful interactions between the microbiota and the host, and to understand their relevance in PD pathogenesis.
Insights
The gut microbiota may influence Parkinson's Disease (PD) development. Bacterial products can promote alpha-synuclein aggregation and inflammation, potentially contributing to PD pathology.
Area of Science:
- Neuroscience
- Microbiology
- Gastroenterology
Background:
- Parkinson's Disease (PD) is a neurodegenerative disorder primarily affecting motor function.
- Lewy bodies, a hallmark of PD, are found outside the central nervous system (CNS), including the olfactory bulbs and enteric nervous system.
- Alpha-synuclein (αS) aggregation and prion-like propagation are key pathological features.
Purpose of the Study:
- To review the role of the microbiota in Parkinson's Disease (PD) pathology.
- To investigate mechanisms of microbiota-host interactions implicated in PD onset.
- To explore how microbial factors influence alpha-synuclein (αS) aggregation and pro-inflammatory responses.
Main Methods:
- Literature review of current research on microbiota and PD.
- Analysis of mechanisms involving bacterial amyloid proteins and metabolites.
- Examination of gut-brain axis interactions in PD pathogenesis.
Main Results:
- The microbiota is increasingly recognized for its potential role in PD.
- Bacterial amyloid proteins and metabolites may influence αS aggregation.
- A pro-inflammatory gut environment, potentially driven by microbiota, may contribute to PD.
Conclusions:
- While no single microbial species is definitively linked to PD, microbiota-host interactions are crucial.
- Further research is needed to elucidate the specific harmful interactions between the microbiota and the host in PD pathogenesis.
- Understanding these interactions is vital for exploring the relevance of the microbiota in PD development.
Related Concept Videos
Parkinson's Disease: Overview
Introduction to the Human Microbiota
Dysbiosis of the Gut Microbiota
Microbiota Modulation by Antibiotics
Parkinson Disease l: Introduction
Parkinson Disease ll: Pathophysiology

