Huntington's disease

Huntingtons Disease         Huntingtons unsoundness, or Huntngtons chorea, is a elementtic disease that causes selective scatterbrained cell death, which results in chorea, or irregular, jerking movements of the limbs caused by impulsive muscle contractions, and dementia. It can cause a lack of prudence and depression. It also whitethorn cause atrophy of the caudate nucleus, a part of the brain. However, symptoms vary amid individuals, with some sufferers showing symptoms that new(prenominal)s do not. Those wo(e) from Huntingtons disease designly begin displaying symptoms mingled with the ages of 30 and 50, but has been cognise to show itself in people as young as two and as old as 80.         Huntingtons disease is inehrited from unmatched of the victims parents. Since the gene for HD is dominant, there is a 50% chance of a sufferers offspring inheriting the disease. Because a victim usually does not begin to display symptoms until after the menstruation in which he or she would have children and the disease may have been misdiagnosed in earlier gen durationtions as Parkinsons disease or other similar affliction, he or she powerfulness pass along the gene without even knowing it.         The gene for Huntingtons disease is placed on the short arm of chromosome intravenous feeding in cytogenetic band 4p16.3. It was first identified in 1993. era e rattlingone posseses this gene, in someone suffering from Huntingtons disease, the number of repeats of a certain trinucleotide, cytozine-adenine-guanine (CAG), is much larger than what it is in a commonplace person. In an average person, the number of repeats is between 9 and 37. too is a sufferer of HD, the repeat count is from 37 to 86. period nobody has found a direct correlation between the number of repeats and the age when symptoms appear, there is evidence that people with genuinely high numbers of repeats contract the... If you want to ! get a full essay, order it on our website: OrderEssay.net

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