Alzheimer's Disease Research Paper Example | Topics and Well Written Essays - 2000 words

Alzheimers Disease - Research Paper ExampleAlzheimer is mostly seen in individuals who are above the age of forty five and it principally develops into dementia in its latter stages. It is characterized by loss of cognitive abilities which occurs due to the loss of normal brain functions. In the latter stages of Alzheimer Disease the sick person becomes totally disoriented and shows memory loss such that he is non able to recognize his in truth close family members. (Evans et al, 1989 Gao et al, 1999). The primary feature of Alzheimer Disease is the atrophy of the cortex. But in some cases it is seen that neuritic processes may accumulate, abnormalities in cerebral nucleus may occur or amyloid angiopathy may be seen.It is seen that Alzhemier Disease does not show any symptoms early at age but after a person reaches 50 the symptoms become obvious. As an individual ages the chances of the disease increase even more often reaching to a level of 40% in individuals who are in their eigh ties ((Evans et al, 1989 Gao et al, 1999 Strauss et al 1999 ). Studies on the disease take a crap shown that cortical atrophy is the major cause of the disease. The cerebral sulci become more prominent in the temporal, head-on and parietal lobes. To cover up for this atrophy usually the ventricle in the brain enlarges. Microscopic studies adjudge shown that neuritic plaques and neurofibrillary tangles accumulate along with amyloid angiopathy. Neuritic plaques are spherical neuritic processes which surround the central amyloid core in Alzheimer. Neurofibrillary tangles are a group of filaments which are found in the cytoplasm of the neurons that usually surround the nucleus. starchlike angiopathy is a sign of Alzhemier Disease but it can also be found in some other diseases. It is believed that Alzheimer later progresses to dementia in individuals because of loss of choline accetyltransferase, synaptophysin immunoreactivity and loss of synaptic transmission. It is believed that Alzheimer is primarily caused by a protein cognise as A. A is