Early Clue to Alzheimer's Disease

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Early Symptoms of Alzheimer's Disease

Early signs and symptoms of the development of Alzheimer's disease can be seen in the cerebrospinal fluid of middle-aged adults who are genetically predisposed to the neurologic condition, according to a report in the July issue of Archives of Neurology, one of the JAMA/Archives journals.

The two strongest risk factors for Alzheimer's disease are aging and the presence of an allele (type of gene) known as apolipoprotein E*4 (APOE*4), according to background information in the article. Those with the APOE*4 allele develop clinical dementia about 10 to 15 years earlier than those who do not have the APOE*4 allele. Previous studies have shown that the plaques that form in the brain during Alzheimer's disease, which are made of proteins known as

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