Huntington's disease

Seymour Gendelman, Howard Eliot Gendelman, Tsuneya Ikezu

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Huntington's disease (HD) is a familial and rare inherited neurological disorder with a prevalence of 5-8 cases per 100,000 worldwide. This makes HD the most common inherited neurodegenerative disorder (Fahn, 2005). HD is passed from parent to child in autosomal dominant fashion. Each child of an HD parent has a 50% chance of inheriting HD. Both sexes are affected equally. It is amongst the first inherited genetic disorders where an accurate test is now available. The disease complex is ascribed to George Huntington who in 1872 described the clinical and neurological manifestations. The neuronal degeneration causes uncontrolled and abnormal body movements called chorea, mental dysfunction, personality changes, and emotional disturbances. Neuropathologically, HD is associated with the death of GABAergic medium sized spiny projection neurons in the caudate nucleus and to neurons in other brain regions. The HD gene, huntingtin (htt), is located on the short arm of chromosome 4, contains N-terminal 18 amino acid-encoding open reading frame, followed by expanded CAG trinucleotide repeat which encodes variable length of poly glutamine tract, and large C-terminal region (>3,100 amino acids). The length of the HD CAG repeats is the primary determinant of the age at which clinical symptoms will appear (Persichetti et al., 1994). Although it is commonly known that the HD polyglutamate tract leads to formation of intracellular inclusions in cytoplasm and/or nucleus in a number of tested species, the correlation of the inclusion with neurotoxicity has been extremely variable. However, the increased number of glutamine is accompanied by the propensity of full-length htt protein to misfold and aggregate; therefore HD belongs to the class of protein misfolding/aggregation disorders. Early HD symptoms are seen in a person's forties, but can occur at any age. Symptoms include mood swings, depression, irritability, difficulties in learning and remembering, and in decision making. As the disease progresses, concentration becomes difficult and daily tasks of maintaining one's self are all but gone; also individuals have difficulty feeding and swallowing. Death in HD typically occurs around 15 years after motor onset due to complications of the disorder, such as aspiration pneumonia. Presymptomic testing is available for individuals who are at risk for carrying the HD gene. There is no known treatment that alters the course of the disease, but symptoms can be managed.

Original languageEnglish (US)
Title of host publicationNeuroimmune Pharmacology
PublisherSpringer US
Pages389-401
Number of pages13
ISBN (Print)9780387725727
DOIs
StatePublished - Dec 1 2008

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Huntington Disease
Proteostasis Deficiencies
Trinucleotide Repeat Expansion
Polyglutamic Acid
Neurons
Amino Acids
Aspiration Pneumonia
Chorea
Chromosomes, Human, Pair 4
Inborn Genetic Diseases
Affective Symptoms
Caudate Nucleus
Dyskinesias
Deglutition
Neurologic Manifestations
Nervous System Diseases
Glutamine
Neurodegenerative Diseases
Open Reading Frames
Genes

Keywords

  • CAG repeats
  • Chorea
  • Huntingtin (htt)
  • Medium spiny neurons (MSNs)

ASJC Scopus subject areas

  • Neuroscience(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

Cite this

Gendelman, S., Gendelman, H. E., & Ikezu, T. (2008). Huntington's disease. In Neuroimmune Pharmacology (pp. 389-401). Springer US. https://doi.org/10.1007/978-0-387-72573-4_28

Huntington's disease. / Gendelman, Seymour; Gendelman, Howard Eliot; Ikezu, Tsuneya.

Neuroimmune Pharmacology. Springer US, 2008. p. 389-401.

Research output: Chapter in Book/Report/Conference proceedingChapter

Gendelman, S, Gendelman, HE & Ikezu, T 2008, Huntington's disease. in Neuroimmune Pharmacology. Springer US, pp. 389-401. https://doi.org/10.1007/978-0-387-72573-4_28
Gendelman S, Gendelman HE, Ikezu T. Huntington's disease. In Neuroimmune Pharmacology. Springer US. 2008. p. 389-401 https://doi.org/10.1007/978-0-387-72573-4_28
Gendelman, Seymour ; Gendelman, Howard Eliot ; Ikezu, Tsuneya. / Huntington's disease. Neuroimmune Pharmacology. Springer US, 2008. pp. 389-401
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