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Related Concept Videos

Diabetic Neuropathy01:22

Diabetic Neuropathy

DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...
Disorders of the Nervous Tissue01:28

Disorders of the Nervous Tissue

Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...
Pedigree Analysis01:35

Pedigree Analysis

Overview
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,...
Non-nuclear Inheritance01:29

Non-nuclear Inheritance

Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm⁠—such as chloroplasts and mitochondria⁠—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
Sex-linked Disorders01:43

Sex-linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.

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Related Experiment Video

Updated: Jun 27, 2026

Genetic Profiling and Genome-Scale Dropout Screening to Identify Therapeutic Targets in Mouse Models of Malignant Peripheral Nerve Sheath Tumor
09:33

Genetic Profiling and Genome-Scale Dropout Screening to Identify Therapeutic Targets in Mouse Models of Malignant Peripheral Nerve Sheath Tumor

Published on: August 25, 2023

Hereditary neuropathies.

Safwan S Jaradeh1

  • 1From the Department of Neurology, Medical College of Wisconsin, Milwaukee.

Journal of Clinical Neuromuscular Disease
|December 17, 2008
PubMed
Summary

Genetic research has advanced the understanding of hereditary neuropathies. This review covers Charcot-Marie-Tooth (CMT), hereditary liability to pressure palsy (HNPP), and hereditary sensory and autonomic neuropathies (HSAN), detailing their clinical and genetic aspects.

Area of Science:

  • Neurology
  • Genetics
  • Molecular Biology

Background:

  • Hereditary neuropathies encompass a diverse group of genetic disorders affecting peripheral nerves.
  • Recent advancements in genetic research have significantly expanded the known spectrum of these conditions.

Purpose of the Study:

  • To review the current clinical and genetic approaches to hereditary neuropathies.
  • To illustrate these approaches using Charcot-Marie-Tooth (CMT), hereditary liability to pressure palsy (HNPP), and hereditary sensory and autonomic neuropathies (HSAN).

Main Methods:

  • Literature review focusing on recent genetic discoveries and clinical classifications.
  • Synthesis of information on the genetic basis and clinical manifestations of CMT, HNPP, and HSAN.

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In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration
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In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration

Published on: June 15, 2018

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Last Updated: Jun 27, 2026

Genetic Profiling and Genome-Scale Dropout Screening to Identify Therapeutic Targets in Mouse Models of Malignant Peripheral Nerve Sheath Tumor
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Genetic Profiling and Genome-Scale Dropout Screening to Identify Therapeutic Targets in Mouse Models of Malignant Peripheral Nerve Sheath Tumor

Published on: August 25, 2023

In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration
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In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration

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Main Results:

  • The genetic landscape of hereditary neuropathies is rapidly evolving.
  • Specific genetic mutations are linked to distinct clinical phenotypes in CMT, HNPP, and HSAN.

Conclusions:

  • A comprehensive understanding of genetic underpinnings is crucial for diagnosing and managing hereditary neuropathies.
  • Continued research is essential for further unraveling the complexities of these disorders and developing targeted therapies.