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janet paterson wrote: > Pharmacokinetic optimisation in the treatment of Parkinson's disease. >"Drug transport from plasma to the brain is mediated by the same carriers operating in the intestinal mucosa." Now, THAT's a bit of interesting news to me. I wonder how they know that. All the other cited papers, and also those in Kathrynne's posting, deal with effects of protein intake on *plasma* concentration of levodopa, and not with the blood-*brain* barrier- precisely the point I originally made. I'm in no position to pass judgement on a professional journal such as Clinical Neuropharmacology (which often contains items I use myself), but from years of study I have developed a sense of very definite differences in the character of articles that get published in the different journals that I routinely scan, quite apart from the expected differences in subject emphasis; and I guess I'll leave it at that. Cheers, Joe -- J. R. Bruman (818) 789-3694 3527 Cody Road Sherman Oaks, CA 91403-5013