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Huntingtons disease summary
Huntingtons disease summary
Pathophysiology of huntington's disease essay
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Disease Summary
Huntington’s disease is of great concern because it is a genetic disease that affects many people worldwide. Huntington’s is described by Wider and Luthi-Carter (2006) as the most prevalent inherited neurodegenerative disorder in humans, affecting between two to eight per 100,000 inhabitants of Western countries. Huntington’s also has a slow onset with an average age of onset around 40 (Wider & Luthi-Carter, 2006). Wider and Luthi-Carter (2006) note the cause of this disease to be a mutation in the huntingtin gene, which can be characterized by distinct symptoms. Chorea, from the Greek “to dance”, is the main distinguishing feature of this mutation and is described by Wider and Luthi-Carter (2006) as rapid involuntary movements that manifest as eyelid elevation, head bobbing, facial grimacing, and jerking of the limbs. Chorea is also noticeable in the way one walks, making an individual move in a zigzag pattern and appear to be thrown off balance by involuntary movements (Wider & Luthi-Carter, 2006). The disease duration is between ten and thirty years and is often first noticed in the early stages by symptoms including attention disorders, personality changes, and alterations in motor control (Wider & Luthi-Carter, 2006).
Though Huntington’s is caused by a mutation, research is still being focused on its pathogenesis to gain a better understanding of the disease. Research done by Wider and Luthi-Carter (2006) shows that the main pathological causes of Huntington’s are atrophy and gliosis of the caudate nucleus and the putamen, which become noticeable and statistically significant around ten years prior to disease onset. The research completed by Wider and Luthi-Carter (2006), also shows a significant loss of GA...
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...2013) chose to only use male mice in order to avoid the female estrus cycle. Using female mice would enhance this study because females certainly differ biologically from males and may therefore experience different effects of Huntington’s. The knowledge gained as a result of these differences may be beneficial in treating Huntington’s in male and female patients.
Works Cited
Wider, C., & Lüthi-Carter, R. (2006). Huntington's disease: Clinical and aetiologic aspects. Schweizer Archiv Für Neurologie Und Psychiatrie, 157(8), 378-383. Retrieved from http://search.proquest.com.er.lib.k-state.edu/docview/621626856?accountid=11789
Abada, Y. K., Schreiber, R., & Ellenbroek, B. (2013). Motor, emotional and cognitive deficits in adult BACHD mice: A model for Huntington’s disease. Behavioural Brain Research, 238, 243-251. doi:http://dx.doi.org/10.1016/j.bbr.2012.10.039
If Nathaniel Wu did not have the allele for Huntington’s disease, he would undeniably be the perfect scientist for the position in the eyes of the IPC. Wu is a 30-year-old microbiologist at one if the best research laboratories worldwide. After a series of interviews, the IPC was convinced his determination was not only factor that qualified him more in comparison to the other candidates; they realized that his potential “[is] likely to result in the type of discoveries for new drugs and treatments,” a goal that has not been reached since Dr. Peters’s incident. Wu is also known as a creative researcher and a hard worker, meaning that hiring him will likely result in a dramatic increase of earnings for the IPC. Considering that Huntington’s disease will most likely deteriorate Wu’s abilities, many may argue that it is not worthwhile to hire Wu; it is foreseen that the symptoms of Huntington’s disease begin to appear as soon as th...
Travis, John. "Pig cells used for Parkinson's disease." Science News. 7 Oct. 1995: 230. Academic OneFile. Web. 26 Feb. 2014
Goldmann, David R., and David A. Horowitz. American College of Physicians Home Medical Guide to Parkinson's Disease. New York: Dorling Kindersley Pub., 2000. Print.
In the 1960s, Joseph Altman from MIT reported that new neurons were being produced in the dentate gyrus of the hippocampus of adult rat brains. Although such findings were groundbreaking, they failed to create the stir that Elizabeth Gould's 1998 study caused . The Princeton University neurobiologist demonstrated that the marmoset b...
"Dementia: Hope Through Research." National Institute of Neurological Disorders and Stroke (NINDS). National Institute of Neurological Disroders and Stroke, 23 Mar. 2011. Web. 29 Nov. 2011. .
Parkinson's is an idiopathic, multifactorial neurodegenerative disease that attacks neurotransmitters in the brain called dopamine. Dopamine is concentrated in a specific area of the brain called the substantia nigra. The neurotransmitter dopamine is a chemical that regulates muscle movement and emotion. Dopamine is responsible for relaying messages between the substantia nigra and other parts of the brain to control body movement. The death of these neurotransmitters affects the central nervous system. The most common symptoms are movement related, including shaking, rigidity, slowness of movement and difficulty with posture. Behavioral problems may arise as the disease progresses. Due to the loss of dopamine, Parkinson's patients will often experience depression and some compulsive behavior. In advanced stages of the disease dementia will sometimes occur. The implications of the disease on the anatomy and physiology of the respiratory and phonatory systems significantly control speech.
Alzheimer’s disease is a complex illness that affects the brain tissue directly and undergoes gradual memory and behavioral changes which makes it difficult to diagnose. It is known to be the most common form of dementia and is irreversible. Over four million older Americans have Alzheimer’s, and that number is expected to triple in the next twenty years as more people live into their eighties and nineties. (Johnson, 1989). There is still no cure for Alzheimer’s but throughout the past few years a lot of progress has been made.
Dementia can occur in relation to many different illnesses. Some of the most common of which are Huntington’s Disease,
Walton, Sir John. Brain’s Diseases of the Nervous System. 9th ed. Oxford University Press. Oxford: 1985.
Since the gene for HD is dominant, there is a 50% chance of a sufferer's
Thomas, C. G. (2013, November 25). National Institute of Neurological Disorders and Stroke. Gene-silencing study finds new targets for Parkinson's disease, pp. 1-2. Retrieved December 13, 2013, from http://www.nih.gov/news/health/nov2013/ninds-24.htm
"Secondary Parkinsonism: MedlinePlus Medical Encyclopedia." U.S National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 11 May 2014.
3. Imagine that a new medical treatment completely removes any negative effects of being a heterozygote for the mutant allele that cause Huntington’s disease; however, homozygotes for the defective alleles still develop the disease with its normal consequences. Assume everyone who needs it is able to get this treatment. How would you expect the frequencies of the Huntington’s allele and the disease itself to change over a long period following the introduction of this treatment.
I looked up Huntington’s Disease to find out more about the disorder. There is no real treatment for the disorder, so I do not see any benefit of knowing that you are going to develop the disease. I feel the distress of knowing that a gene is present and the disease is going to come in time would be worse than the symptoms starting to manifest themselves. The early symptoms can develop any time, but in most cases, they develop in between the age range of 30 – 50 years of age. The initial signs and symptoms are very subtle causing problems with coordination, involuntary movement, and memory. The person affected may develop depression or irritable moods. In the early stages, there are some medications that can help with those symptoms.
I still have yet to acquire the symptoms of Huntington’s disease, but I know one day they will come. Until then I’m making the most of everything and living my dreams. I’ve visited half the national parks in the country, and traveled all over Europe with my parents and Brice. I’ve also decided to help others with my disease by participating in studies that are working towards learning more about the disease and finding at least a treatment to delay symptoms. I don’t expect for this to occur in time for me, but it makes me feel better knowing that I will have helped save others in my position. Most of all, I’m living every moment, getting as much time with my loved ones as possible.