March 25, 2008 - ExonHit Therapeutics, a drug and diagnostic discovery company, announced the results of a Phase 1 study assessing the effects of its lead compound, EHT 0202, on scopolamine-induced brain impairments in humans. ExonHit's EHT 0202 is a compound, with a novel mechanism of action, which has shown preclinical benefits on memory and neuronal loss and is currently tested in a Phase 2 clinical trial on Alzheimer disease (AD) patients. Scopolamine interferes with the transmission of nerve impulses by acetylcholine, a substance to which it is structurally similar, thus depressing nervous system activity. Cognitive impairment due to central cholinergic dysfunction, or scopolamine administration, is measurable through electroencephalography (EEG) changes under both nonstimulus and stimulus conditions. A number of studies indicate that EEG is a sensitive measure of acetylcholine's activity and of the induced alterations elicited by scopolamine. In addition, scopolamine-induced EEG changes have been considered as possible biomarkers for AD as the impairment acetylcholine's activity is one of the landmarks of this disease... ExonHit Therapeutics' Press Release -