What is Huntingston's disease

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Like Parkinson's and Alzheimer's disease, Huntington's disease (HD) is one of the Major neurodegenerative, protein-misfolding disease that face certain patients today. HD is an autosomal dominant disease caused by trinucleotide expansion[Cytosine, Adenine, and Guanine] (CAG) within a single gene, huntingtin (Htt). The unwillingly and involuntary movement accompanied by cognitive impairment and emotional disturbance are its main characteristics. Because it's a autosomal dominant disease, and because genes are passed from one generation to another, the trinucleotide expansion (CAG) can be grander in the early age. Thus we have an early-onset form and the adult-onset form of the disease. Amniocentesis and Chorionic villus sampling (CVS), are two exams which can help diagnose HD during pregnancy. Actually there is no cure for Huntington's disease, and because it's an autosomal dominant disease there is no known way to stop the disease from getting worse. Some drugs such as Dopamine blockers can only help to reduce some abnormal behavior and movement Refs: http://learn.genetics.utah.edu/content/disorders/whataregd/hunt http://www.nlm.nih.gov/medlineplus/ency/article/000770.htm

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