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Related Concept Videos

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...
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.
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...

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Related Experiment Video

Updated: May 29, 2026

Human Peripheral Blood Neutrophil Isolation for Interrogating the Parkinson's Associated LRRK2 Kinase Pathway by Assessing Rab10 Phosphorylation
12:49

Human Peripheral Blood Neutrophil Isolation for Interrogating the Parkinson's Associated LRRK2 Kinase Pathway by Assessing Rab10 Phosphorylation

Published on: March 21, 2020

Microarray expression analysis in idiopathic and LRRK2-associated Parkinson's disease.

Teresa Botta-Orfila1, Eduard Tolosa, Ellen Gelpi

  • 1Parkinson's Disease and Movement Disorders Unit, Neurology Service-Hospital Clínic, Department of Medicine-Universitat de Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Catalonia, Spain.

Neurobiology of Disease
|September 28, 2011
PubMed
Summary

Genetic Parkinson's disease (PD) involves altered brain pathways. Idiopathic PD shows changes in synaptic plasticity and cell signaling, unlike LRRK2-associated PD, suggesting different molecular responses to dopamine dysfunction.

More Related Videos

Assaying the Kinase Activity of LRRK2 in vitro
06:09

Assaying the Kinase Activity of LRRK2 in vitro

Published on: January 18, 2012

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag
08:55

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag

Published on: December 14, 2017

Related Experiment Videos

Last Updated: May 29, 2026

Human Peripheral Blood Neutrophil Isolation for Interrogating the Parkinson's Associated LRRK2 Kinase Pathway by Assessing Rab10 Phosphorylation
12:49

Human Peripheral Blood Neutrophil Isolation for Interrogating the Parkinson's Associated LRRK2 Kinase Pathway by Assessing Rab10 Phosphorylation

Published on: March 21, 2020

Assaying the Kinase Activity of LRRK2 in vitro
06:09

Assaying the Kinase Activity of LRRK2 in vitro

Published on: January 18, 2012

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag
08:55

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag

Published on: December 14, 2017

Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • LRRK2 mutations are the most frequent genetic cause of Parkinson's disease (PD).
  • Understanding molecular differences between idiopathic PD and LRRK2-associated PD is crucial for targeted therapies.

Purpose of the Study:

  • To compare whole-genome RNA expression profiles in the putamen of idiopathic PD, LRRK2-associated PD, and control subjects.
  • To identify distinct molecular pathways affected in different forms of Parkinson's disease.

Main Methods:

  • Whole-genome RNA profiling using the Genechip Human Exon 1.0-ST Array.
  • Analysis of putamen tissue from idiopathic PD, LRRK2-associated PD (G2019S mutation), healthy controls, and an asymptomatic LRRK2 carrier.

Main Results:

  • Idiopathic PD (IPD) showed altered pathways in long-term potentiation (LTP), GABA receptor signaling, and calcium signaling, related to cell signaling and synaptic plasticity.
  • These pathways were also altered in an asymptomatic LRRK2 carrier but not in LRRK2-associated PD patients.
  • The findings suggest IPD's molecular changes may be adaptive responses to dopamine transmission dysfunction, differing from LRRK2-associated PD.

Conclusions:

  • Idiopathic PD and LRRK2-associated PD exhibit distinct molecular pathway alterations.
  • Synaptic plasticity and cell signaling pathways are implicated in IPD, potentially as adaptive responses.
  • LRRK2-associated PD may involve different molecular mechanisms underlying dopamine transmission impairment.