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ÀÛ¼ºÀÚ °ü¸®ÀÚ ÀÛ¼ºÀÏ 2005-08-17 ¿ÀÈÄ 6:13:00
MONDAY, Aug. 8 (HealthDay News) -- Elevated insulin levels may contribute to the development of
Alzheimer's disease, and investigators hope this new finding will lead to more effective
treatment strategies, according to a report in the Aug. 8 issue of the Archives of Neurology.

Researchers at the University of Washington in Seattle raised blood insulin levels in 16 healthy
older adult volunteers and then measured changes in the volunteers' levels of inflammatory
markers and beta-amyloid (a protein associated with Alzheimer's disease) in their cerebrospinal
fluid and plasma.


"Moderate peripheral hyperinsulinemia (increased levels of insulin) provoked striking increases
in CNS (central nervous system) inflammatory markers," the study authors wrote. "Our findings
suggest that insulin-resistant conditions such as diabetes mellitus and hypertension may
increase the risk for Alzheimer's disease, in part through insulin-induced inflammation."


The research team concluded: "Although this model has obvious relevance for diabetes mellitus,
hyperinsulinemia and insulin resistance are widespread conditions that affect many nondiabetic
adults with obesity, impaired glucose tolerance, cardiovascular disease and hypertension. Our
results provide a cautionary note for the current epidemic of such conditions, which, in the
context of an aging population, may provoke a dramatic increase in the prevalence of
[Alzheimer's disease]."


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