In a new report, U.S. researchers describe the improvement in brain function that occurred in a patient with Alzheimer's disease just minutes after receiving an injection in the spine of the arthritis drug Enbrel (also known as etanercept). For instance, just prior to treatment the patient was agitated and could not name the state. Ten minutes after treatment, he appeared calmer, more attentive, less frustrated and was able to correctly name the state. Further improvements in mental functioning, memory, and other cognitive parameters were noted at 2 hours. Dr. Edward L. Tobinick, from the University of California at Los Angeles,...