An extraordinary new scientific study, which for the first time documents marked improvement in Alzheimer's disease within minutes of administration of a therapeutic molecule, has just been published in the Journal of Neuroinflammation.
This new study highlights the importance of certain soluble proteins, called cytokines, in Alzheimer's disease. The study focuses on one of these cytokines, tumor necrosis factor-alpha(TNF), a critical component of the brain's immune system. Normally, TNF finely regulates the transmission of neural impulses in the brain. The authors hypothesized that elevated levels of TNF in Alzheimer's disease interfere with this regulation. To reduce elevated TNF, the authors gave patients an injection of an anti-TNF therapeutic called etanercept. Excess TNF-alpha has been documented in the cerebrospinal fluid of patients with Alzheimer's.
The new study documents a dramatic and unprecedented therapeutic effect in an Alzheimer's patient: improvement within minutes following delivery of perispinal etanercept, which is etanercept given by injection in the spine. Etanercept (trade name Enbrel) binds and inactivates excess TNF. Etanercept is FDA approved to treat a number of immune-mediated disorders and is used off label in the study.
The use of anti-TNF therapeutics as a new treatment choice for many diseases, such as rheumatoid arthritis and potentially even Alzheimer's, was recently chosen as one of the top 10 health stories of 2007 by the Harvard Health Letter.
Similarly, the Neurotechnology Industry Organization has recently selected new treatment targets revealed by neuroimmunology (such as excess TNF) as one of the top 10 Neuroscience Trends of 2007. And the Dana Alliance for Brain Initiatives has chosen the pilot study using perispinal etanercept for Alzheimer's for inclusion and discussion in their 2007 Progress Report on Brain Research.
The lead author of the study, Edward Tobinick M.D., is an assistant clinical professor of medicine at the University of California, Los Angeles and director of the Institute for Neurological Research, a private medical group in Los Angeles. Hyman Gross, M.D., clinical professor of neurology at the University of Southern California, was co-author.