Carbonic acid production and the role of carbonic anhydrase in decarboxylation in brain

Sudden oxygenation of a thin film of rat brain homogenate, suspended between the surface of a glass pH-sensitive electrode and a gas-permeable membrane, is accompanied by a fall in pH, which is greater when carbonic anhydrase is inhibited. The result suggests that oxidative decarboxylation yields ca...

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Bibliographic Details
Main Authors: Severinghaus, John W., Hamilton, F. Norman, Cotev, Shamay
Format: Text
Language:English
Published: 1969
Subjects:
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1184955
http://www.ncbi.nlm.nih.gov/pubmed/4981033
Description
Summary:Sudden oxygenation of a thin film of rat brain homogenate, suspended between the surface of a glass pH-sensitive electrode and a gas-permeable membrane, is accompanied by a fall in pH, which is greater when carbonic anhydrase is inhibited. The result suggests that oxidative decarboxylation yields carbonic acid (HCO3− and H+), which dissociates to form molecular carbon dioxide. Brain carbonic anhydrase facilitates the formation of carbon dioxide from the decarboxylation products.