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Parkinson Disease ll: Pathophysiology

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Updated: Jun 18, 2026

Olfactory Assays for Mouse Models of Neurodegenerative Disease

Olfactory Assays for Mouse Models of Neurodegenerative Disease

Published on: August 25, 2014

Parkinson's disease, autoimmunity, and olfaction.

Michal Benkler¹, Nancy Agmon-Levin, Yehuda Shoenfeld

¹Center for Autoimmune Diseases, Sheba Medical Center, Tel Hashomer, Israel.

The International Journal of Neuroscience

|November 18, 2009

Summary

Parkinson's disease (PD) involves immune system changes, including increased innate and adaptive immune components in patients. Olfactory dysfunction in PD may stem from autoimmune mechanisms, offering new research avenues.

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Area of Science:

Neuroimmunology
Neurodegenerative Diseases

Background:

Parkinson's disease (PD) is a progressive neurodegenerative disorder with complex etiopathogenesis involving genetic, environmental, and immunological factors.
Nonmotor symptoms, such as olfactory dysfunction, are common in PD and may offer insights into disease mechanisms.

Purpose of the Study:

To review immune alterations in Parkinson's disease patients.
To explore the potential link between autoimmunity, olfactory dysfunction, and PD pathogenesis.

Main Methods:

Review of studies examining immune components in PD patients.
Analysis of innate and adaptive immune responses, including complement, cytokines, T cells, and autoantibodies.
Comparison with autoimmune diseases exhibiting olfactory dysfunction.

Main Results:

Elevated innate immune components (complement, cytokines) in substantia nigra and cerebrospinal fluid (CSF) of PD patients.
Increased adaptive immune markers (T cells, autoantibodies like anti-alpha-synuclein and anti-GM1-ganglioside) in blood and CSF.
Olfactory dysfunction as a potential early indicator of autoimmune mechanisms in PD.

Conclusions:

Immune system dysregulation is a significant feature of Parkinson's disease.
Autoimmune processes, potentially linked to olfactory dysfunction, may play a crucial role in PD pathogenesis.
Understanding these immune links could pave the way for novel therapeutic strategies to halt PD progression.