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The cholinergic system in Down's syndrome.

Abstract
The cholinergic system is one of the most important modulatory neurotransmitter systems in the brain. Alterations of the transmission communicators are accompanied by reduction of the cortical activity, which is associated with a learning and memory deficit. Down's syndrome is a pathological condition characterized by a high number of abnormalities that involve the brain. The cholinergic system is involved in alterations of the neurological system such as severe learning difficulties. To explain these alterations, important results are obtained from studies about murine trisomy 16 (animal model of Down's syndrome). The results obtained provide useful elements in the improvement of knowledge about the neurological and neurotransmissional alterations that are responsible for the neurobiological characteristics of Down's syndrome. These data potentially justify, in these patients, the therapeutic use of drugs that are principally administered to improve the severe learning difficulties of people with Alzheimer's disease, and suggest a trend which generates a hypothesis worthy of further exploration.
AuthorsVincenzo Fodale, Federica Mafrica, Vincenzo Caminiti, Giovanni Grasso
JournalJournal of intellectual disabilities : JOID (J Intellect Disabil) Vol. 10 Issue 3 Pg. 261-74 (Sep 2006) ISSN: 1744-6295 [Print] England
PMID16916850 (Publication Type: Journal Article, Review)
Chemical References
  • Receptors, Cholinergic
Topics
  • Animals
  • Attention (physiology)
  • Brain (physiopathology)
  • Cerebral Cortex (physiopathology)
  • Cholinergic Fibers (physiology)
  • Chromosomes, Mammalian
  • Disease Models, Animal
  • Down Syndrome (genetics, physiopathology)
  • Humans
  • Learning (physiology)
  • Memory (physiology)
  • Mice
  • Receptors, Cholinergic (physiology)
  • Synaptic Transmission (physiology)
  • Trisomy

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