Gamma Secretase Modulators Show Promise in Alzheimer's Disease Animal Model Efficacy Studies, According to Research Conducted by TorreyPines Th... (tes that individuals genetically predisp...)

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Gamma Secretase Modulators Show Promise in Alzheimer's Disease Animal Model Efficacy Studies, According to Research Conducted by TorreyPines Therapeutics

Date:3/31/2008

tes that individuals genetically predisposed to early-onset forms of Alzheimer's disease make a greater proportion of the longer Ab peptides, especially Ab42, relative to unaffected individuals. All of these Ab peptides, including the pathogenic Ab42 peptide, are derived via proteolysis from a much larger precursor molecule known as the amyloid b precursor protein (APP).

During normal catabolism, two crucial enzymes, or proteases, are responsible for generating these Ab peptides from APP. The first enzyme, beta secretase (b-secretase), cuts the APP molecule into two major pieces comprised of a soluble extracellular fragment and a membrane-associated fragment. The second enzyme, gamma secretase (g-secretase), then cleaves the membrane- associated fragment into one of several different Ab peptides that vary in length from 34 to 42 amino acids.

About TorreyPines Therapeutics

TorreyPines Therapeutics, Inc. is a biopharmaceutical company committed to providing patients with better alternatives to existing therapies through the research, development and commercialization of small molecule compounds. The company's goal is to develop versatile product candidates each capable of treating a number of acute and chronic diseases and disorders such as migraine, chronic pain, muscle spasticity and rigidity, xerostomia and cognitive disorders. The company is currently developing four product candidates, two ionotropic glutamate receptor antagonists and two muscarinic receptor agonists. Further information is available at http://www.torreypinestherapeutics.com.

This press release contains forward-looking statements or predictions. Such forward-looking statements include, but are not limited to, statements regarding the potential for GSMs as a treatment for Alzheimer's disease. Such statements are subject to numerous known and unknown risks, uncertainties and other factors, which may cause
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