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Related Concept Videos

Neural Regulation01:37

Neural Regulation

Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
Amyloid Fibrils03:03

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining, normally used to...
Amyloid Fibrils03:03

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining, normally used to...
Parkinson's Disease: Overview01:15

Parkinson's Disease: Overview

Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is to...
Parkinson Disease l: Introduction01:24

Parkinson Disease l: Introduction

Parkinson’s disease is a chronic, progressive neurodegenerative disorder that primarily affects movement. It is characterized by motor symptoms such as resting tremors, muscle rigidity, bradykinesia (slowness of movement), and postural instability. Patients may notice hand tremors at rest, stiffness during movement, or a shuffling gait. In addition to motor features, non-motor symptoms include sleep disturbances, mood and behavioral changes, constipation, and cognitive impairment, all of which...
Parkinson Disease ll: Pathophysiology01:24

Parkinson Disease ll: Pathophysiology

Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...

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Related Experiment Video

Updated: Jul 3, 2026

Sequential Extraction of Soluble and Insoluble Alpha-Synuclein from Parkinsonian Brains
09:27

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

Published on: January 5, 2016

Alpha-synuclein and the Lewy body disorders.

D W Dickson1

  • 1Department of Pathology, Mayo Clinic, Jacksonville, Florida 32224, USA. dickson.dennis@mayo.edu

Current Opinion in Neurology
|July 27, 2001
PubMed
Summary

Alpha-synuclein protein aggregation is linked to synucleinopathies, a group of neurodegenerative diseases. Research is ongoing to understand if these protein inclusions are adaptive or cause cell degeneration.

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Technique for Intranasal Administration of &#945;-Synuclein Aggregates
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Last Updated: Jul 3, 2026

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

Published on: January 5, 2016

Studying Pre-formed Fibril Induced &#945;-Synuclein Accumulation in Primary Embryonic Mouse Midbrain Dopamine Neurons
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Technique for Intranasal Administration of &#945;-Synuclein Aggregates
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Technique for Intranasal Administration of α-Synuclein Aggregates

Published on: November 8, 2024

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Pathology

Background:

  • Alpha-synuclein (α-synuclein) is increasingly recognized for its role in neurodegenerative diseases called synucleinopathies.
  • Synucleinopathies present with diverse clinical symptoms, including parkinsonism, autonomic dysfunction, and dementia.

Purpose of the Study:

  • To summarize the current understanding of synucleinopathies, focusing on clinical, neuropathological, and biochemical aspects.
  • To explore the molecular mechanisms underlying alpha-synuclein aggregation in neurons and glia.

Main Methods:

  • Review of clinical, neuropathologic, and biochemical characterizations of synucleinopathies.
  • Analysis of molecular modifications of alpha-synuclein favoring fibrillization and aggregation.

Main Results:

  • Significant progress has been made in characterizing synucleinopathies and differentiating them from other neurodegenerative disorders.
  • Molecular insights reveal conformational and post-translational changes in alpha-synuclein that promote aggregation.

Conclusions:

  • Alpha-synuclein aggregation in neuronal and glial inclusions is a hallmark of synucleinopathies.
  • The precise role of inclusion body formation in disease pathogenesis remains an active area of investigation.