Role of Ribonuclease and Ribonuclease Inhibitor Activities in Alzheimer's Disease

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Abstract
It has been suggested that defects in the relationship between ribonuclease and its proteinaceous inhibitor could be a contributory factor in Alzheimer's disease. We have investigated this possibility further by analysing free and bound enzyme activities and the activity of the inhibitor in nine regions of diseased and normal brain. These were chosen to include areas known to be affected by the disease, regions not histologically affected but thought to be involved in the disease process, and areas not thought to be involved in the disease. Neither the enzyme nor its inhibitor is defective in its activities in the chosen areas of Alzheimer's disease brain when compared with those of carefully age‐matched controls