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Updated: Jun 10, 2026

Detection of Neuritic Plaques in Alzheimer's Disease Mouse Model
Published on: July 26, 2011
Plasma carbonic anhydrase II protein is elevated in Alzheimer's disease
Bong Geom Jang1, Sang-Moon Yun, Kyungsook Ahn
1Division of Brain Diseases, Center for Biomedical Sciences, National Institute of Health, Seoul, Korea.
Abstract:
Carbonic anhydrase (CA) plays a critical role in pH regulation, long-term synaptic transformation, and is associated with mental retardation, Alzheimer's disease (AD), and Down syndrome. There is accumulating evidence that CAII is increased in AD brain. The present study focused on the determination of CAII protein level in blood plasma samples using immunoblot and ELISA methods. We compared plasma from 91 AD patients (average age 74.8 y), 83 persons with amnestic mild cognitive impairment (MCI) (average age 73.7 y), and 113 cognitively normal controls (average age 70.8 y). The plasma level of CAII was significantly increased in AD patients, as compared to control groups. CAII levels were higher in males than females. There was an age-dependent increase of CAII. These results provide further evidence that changes in CAII level may play a role in the pathogenesis of AD.
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