ENG 101 Alzheimer Cause & Effect research paper

ENG 101 Alzheimer Cause & Effect research paper - page...

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page Alzheimer’s disease, a neurodegenerative brain disease, is the most common cause of dementia. This disease is named for German physician, Alois Alzheimer, who first diagnosed it in the early twentieth century. Approximately 5.3 million Americans are living with this progressive and lethal brain disease, and it is the seventh leading cause of death in the United States. Over the past one hundred years, researchers have discovered several internal or biological sources of Alzheimer’s disease, such as genetic mutations or possible viral/bacterial causes. The researchers have investigated external or environmental causes of Alzheimer’s disease, such as the levels of nitrites, nitrates and aluminum found in the autopsied brains of Alzheimer patients. German physician, Alois Alzheimer discovered a collection of brain cell anomalies associated with dementia, but not exactly the same as in dementia patients. During an autopsy on a former patient, he revealed dense deposits surrounding nerve cells (neuritic plaques). Inside those nerve cells were twisted bands of fibers (neurofibrillary tangles). In the 1960’s, scientists discovered a link between cognitive decline and plaques and tangles in the brain. Alzheimer’s was recognized as a disease and not just a normal part of aging. In the 1970’s, Alzheimer’s disease emerge as a significant area of research interest as the understanding of the human body expanded. In the 1990’s, scientists made important discoveries and gained a better understanding of the complex nerve cells in the brains of Alzheimer’s patients. Research on susceptible genes and several drugs were approved to treat the cognitive symptoms. In the last decade, significant progress has been made in understanding potential environmental, genetic and other risk factors that might
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This note was uploaded on 11/18/2011 for the course ENG 101 taught by Professor Smith during the Spring '10 term at Lander.

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ENG 101 Alzheimer Cause & Effect research paper - page...

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