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lüll Metallo-complex activation of neuroprotective signalling pathways as a therapeutic treatment for Alzheimer s disease Bica L; Crouch PJ; Cappai R; White ARMol Biosyst 2009[Feb]; 5 (2): 134-42Alzheimer's disease is the most common neurodegenerative disease of the elderly and although some drugs may delay cognitive impairment, an effective treatment has not yet been found. Extracellular deposition of amyloid-beta (Abeta) plaques, intracellular hyperphosphorylation of the microtubule associated protein, tau and elevated oxidative stress have long been a focus for neurotherapeutic strategies. More recently biometal interactions with Abeta have become a feasible target as they appear to play a significant role in the pathogenesis of this devastating disease. Metal ligands such as 8-hydroxyquinoline derivatives have been developed that alter these interactions and promote clearance of amyloid deposits. A novel neurotherapeutic approach may involve activation of neuronal cell signalling mechanisms using metallo-complexes. Copper or zinc complexes can activate phosphoinositol-3-kinase leading to downstream modulation of glycogen synthase kinase-3 and extracellular signal regulated kinase and this results in decreased tau and Abeta levels. These approaches may offer a new strategy for treating AD. Further in vivo investigation is required to elucidate the mechanism of action of these metallo-complexes in vivo and determine their efficacy and safety as potential treatments of neurodegenerative diseases.|Alzheimer Disease/*metabolism/*therapy[MESH]|Amyloid beta-Peptides/metabolism[MESH]|Animals[MESH]|Extracellular Signal-Regulated MAP Kinases/metabolism[MESH]|Glycogen Synthase Kinase 3/metabolism[MESH]|Humans[MESH]|Ligands[MESH]|Metals/*chemistry[MESH]|Neuroprotective Agents/*pharmacology[MESH]|Oxidative Stress[MESH]|Oxyquinoline/pharmacology[MESH]|Phosphorylation[MESH]|Signal Transduction[MESH]|Zinc/chemistry[MESH]|tau Proteins/chemistry[MESH] |