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A lead conversion method for staining thiamine pyrophosphatase and other phosphatases in rat brain after thin layer
P Mazzarello1, M Poloni, C Patrini
1Clinica Neurologica I, Università di Milano, Italy.
Basic and Applied Histochemistry
|January 1, 1988
Abstract:
Rat brain thiamine pyrophosphatase (TPPase) was separated by thin layer polyacrylamide gel isoelectric focusing (IF) and stained with a modification of the lead conversion method of Allen and Hyncik (1963). 10 bands with TPPase activity were observed in the pH range 4.6-7.1. The overall IF pattern of TPPase was similar to that of uridine diphosphatase and inosine diphosphatase but was clearly different from that of adenosine diphosphatase, p-nitrophenyl phosphatase, alpha-naphthyl phosphatase and thiamine monophosphatase. A semiquantitative assessment of TPPase isoenzymes has been performed using laser densitometry.