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Related Experiment Video

Updated: Jan 25, 2026

Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo

Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo

Published on: June 2, 2019

Neuromuscular pathology in mice lacking alpha-synuclein.

Anssi Pelkonen¹, Leonid Yavich

¹School of Pharmacy, University of Eastern Finland, Kuopio, Finland. anssi.pelkonen@uef.fi

Neuroscience Letters

|October 30, 2010

Summary

Alpha-synuclein deficiency in mice leads to neuromuscular junction pathology and slower motor learning. This suggests alpha-synuclein is crucial for acetylcholine function and precise skeletal muscle control.

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Sequential Extraction of Soluble and Insoluble Alpha-Synuclein from Parkinsonian Brains

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Published on: January 5, 2016

Area of Science:

Neuroscience
Skeletal Muscle Physiology
Synucleinopathies

Background:

Alpha-synuclein is implicated in neurodegenerative diseases.
Its precise role in neuromuscular junction (NMJ) function is not fully understood.

Purpose of the Study:

To investigate the function of alpha-synuclein at the NMJ in skeletal muscles.
To determine the impact of alpha-synuclein deficiency on neuromuscular transmission and motor behavior.

Main Methods:

Utilized alpha-synuclein null mutated and knockout mouse models.
Performed repeated stimulation of skeletal muscle motor neurons.
Assessed muscle strength, coordination, motor learning (Rotarod test), and electrophysiological responses (compound muscle action potentials).

Main Results:

Alpha-synuclein deficient mice exhibited signs of neuromuscular pathology.
Repetitive compound muscle action potentials were observed following stimulation.
While muscle strength and coordination remained unaffected, motor learning was impaired in deficient mice.

Conclusions:

Alpha-synuclein appears to play a role in acetylcholine compartmentalization at the NMJ.
The protein is likely involved in the fine motor control of skeletal muscles.
These findings contribute to understanding alpha-synuclein's broader physiological functions beyond neurodegeneration.