Histochemical study of TPPase and NDPase in the human nervous tissue,with particular reference to glia cells

Summary TPPase and IDPase activities were investigated in normal and reactive human nervous tissue with three divalent ions as activators at different concentrations. Enzyme distribution in neuronal Golgi apparatus, vessels and glia cells is described. In glia cells IDP was hydrolyzed almost equally with the different ions at the concentration of 0.005 M, while TPP was only weakly hydrolyzed with Ca⁺⁺ and Mg⁺⁺. Small positive structures in the cells remained positive and for these a correspondence with the Golgi apparatus is suggested.Partially supported by Consiglio Nazionale delle Ricerche (C.N.R), Rome.