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Insulin like growth factor-1 (IGF-1) plays an important role in the proliferation and differentiation of neural progenitor cells. The effects of IGF-1 can be regulated by insulin like growth factor binding protein-3 (IGFBP-3) which can either inhibit or stimulate the proliferation of cells depending on the expression of proteases that can release IGF-1 from IGF1-IGFBP3 complex. Although IGF-1 is essential...
l-Theanine (=γ-glutamylethylamide) is an amino acid ingredient in green tea with a structural analogy to l-glutamine (l-GLN) rather than l-glutamic acid (l-GLU), with regards to the absence of a free carboxylic acid moiety from the gamma carbon position. l-theanine markedly inhibits [3H]l-GLN uptake without affecting [3H]l-GLU uptake in cultured neurons and astroglia. In neural progenitor cells with...
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