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Abstract #3745

Early Alterations in Cerebral Oxygen Extraction in Autosomal-Dominant Alzheimer's Disease

Dustin Kenneth Ragan1, 2, Randall Bateman3, 4, Virginia D. Buckles3, 4, Jose A. Pineda1, 3, John C. Morris3, 4, Tammie LS Benzinger2, 4

1Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, United States; 2Department of Radiology, Washington University School of Medicine, St. Louis, MO, United States; 3Department of Neurology, Washington University School of Medicine, St. Louis, MO, United States; 4Knight Alzheimer's Disease Research Center, Washington University School of Medicine, St. Louis, MO, United States

We investigated early changes to cerebral oxygen extraction in patients who had a familiar history of autosomal-dominant Alzheimers Disease by measuring magnetic susceptibility in cerebral veins. Oxygen extraction was showed a decrease around the age of onset, with a return to normal values 5 years after onset. This may indicate an important early marker of the disease process.

Keywords

absolute acquisition alterations although amount appeared approximation assumed available background blood brain buckles candidate caused cerebral chance children combined compensate concentration consistent controls correlation cortex currently cylinder damage decrease decreased defects delivered dementia determined developing disease displays divided dominant drains early expected explained extraction fairly field filtering findings flow form forms fraction generations genes genetic gradient human ideal ideally identify implies important importantly included includes indicate individual individuals inherited investigated investigations john knight lead maintaining majority markers measure measured medicine metabolism modifying morris motivated mutation mutations near necessarily neurological neurology nominal normalization normalizes nuclear occur occurred ongoing onset overall oxygen parent parental part pass passed patient patients pediatrics population portion posterior previous prior process produces progression progressive project radiology reconstructed removed represents resolution school severe sinus straight studies subjects substantial superior susceptibility symptoms taken therapies ultimately uncorrelated view