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Related Concept Videos

Huntington Disease l: Introduction01:21

Huntington Disease l: Introduction

Huntington disease or HD is a progressive, fatal neurodegenerative disorder inherited in an autosomal dominant pattern.PathophysiologyIt is caused by expansion of the CAG trinucleotide repeat in the HTT gene on chromosome 4 (4p16.3), producing an abnormal huntingtin protein with an expanded polyglutamine tract. This misfolded protein disrupts cellular function, leading to neuronal death. Normal alleles have ≤26 repeats, 27–35 are intermediate (risk of expansion), 36–39 show reduced penetrance,...
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...
Alzheimer Disease ll: Pathophysiology01:23

Alzheimer Disease ll: Pathophysiology

Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and microglia. Abnormal...
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'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...
Alzheimer Disease l: Introduction01:29

Alzheimer Disease l: Introduction

Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...

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Related Experiment Video

Updated: Jun 14, 2026

Fractionation for Resolution of Soluble and Insoluble Huntingtin Species
07:08

Fractionation for Resolution of Soluble and Insoluble Huntingtin Species

Published on: February 27, 2018

Couples' attributions for work function changes in prodromal Huntington disease.

Nancy R Downing1, Janet K Williams, Jane S Paulsen

  • 1University of Iowa College of Nursing, Iowa City, IA, USA.

Journal of Genetic Counseling
|March 24, 2010
PubMed
Summary

Individuals with the Huntington disease (HD) gene mutation often don't attribute job changes to pre-symptomatic HD. Understanding these attributions is crucial for developing coping strategies and seeking medical care.

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Whole-brain Segmentation and Change-point Analysis of Anatomical Brain MRI—Application in Premanifest Huntington's Disease
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Last Updated: Jun 14, 2026

Fractionation for Resolution of Soluble and Insoluble Huntingtin Species
07:08

Fractionation for Resolution of Soluble and Insoluble Huntingtin Species

Published on: February 27, 2018

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice
08:27

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice

Published on: March 11, 2020

Whole-brain Segmentation and Change-point Analysis of Anatomical Brain MRI—Application in Premanifest Huntington's Disease
09:06

Whole-brain Segmentation and Change-point Analysis of Anatomical Brain MRI—Application in Premanifest Huntington's Disease

Published on: June 9, 2018

Area of Science:

  • Neurodegenerative Diseases
  • Genetics
  • Psychology

Background:

  • Individuals testing positive for the expanded Huntington disease (HD) gene (pre-HD) and their companions report subtle work-related changes.
  • It remains unclear if these individuals attribute these changes to HD.

Purpose of the Study:

  • To explore how individuals with pre-HD and their companions attribute subtle changes affecting job performance.
  • To understand the relationship between these attributions and coping strategies.

Main Methods:

  • Qualitative analysis of semi-structured telephone interviews with seven individuals with pre-HD and six companions.
  • Analysis focused on attributions related to health, work, and temperament.

Main Results:

  • Only one participant attributed a change to HD.
  • Participants demonstrated symptom monitoring and social comparison in forming attributions.
  • Uncertainty about making attributions was common.

Conclusions:

  • Attributions significantly influence coping mechanisms, including decisions about medical treatment.
  • The link between attributions and coping strategies for job-impacting symptoms in prodromal HD requires further investigation.