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New Compound Identifies Alzheimer's Disease Brain Toxins, Study Shows By : Susan West A groundbreaking study conducted by University of Pittsburgh Alzheimer's disease researchers reported in the journal Brain confirms that Pittsburgh Compound-B (PiB) binds to the telltale beta-amyloid deposits found in the brains of patients with Alzheimer's disease. The finding is a significant step toward enabling clinicians to provide a definitive diagnosis of Alzheimer's disease in living patients. CPAP Improves Sleep In Patients With Alzheimer's Disease, Sleep-related Breathing Disorder By : Clodette Rimbau Patients with both Alzheimer disease and a sleep-related breathing disorder (SRBD) experience disrupted sleep, resulting in increased nocturnal awakenings and a decreased percentage of REM sleep. However, in another example of the effectiveness of continuous positive airway pressure (CPAP), CPAP has been found to reduce the amount of time spent awake during the night, increase the time spent in deeper levels of sleep, and improve oxygenation, according to a recent study.