alexa Carbonic Anhydrase between Aerobic and Anaerobic Glycolysis | Open Access Journals
ISSN: 2161-1017
Endocrinology & Metabolic Syndrome
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Carbonic Anhydrase between Aerobic and Anaerobic Glycolysis

Salihu I*

Department of Biochemistry, Federal University Dutse, Nigeria

Corresponding Author:
Ibrahim Salihu Ismail
Department of Biochemistry, Federal University Dutse, Nigeria
Tel: +2348036316108
E-mail: [email protected]

Received Date: December 05, 2016; Accepted Date: December 12, 2016; Published Date: December 16, 2016

Citation: Salihu I (2016) Carbonic Anhydrase between Aerobic and Anaerobic Glycolysis. Endocrinol Metab Syndr 6:i014. doi:10.4172/2161-1017.1000i014

Copyright: © 2016 Salihu I. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Carbonic anhydrase converts CO2 and H2O generated from aerobic oxidation of glucose in the mitochondria to HCO3+ H+, the HCO3 is either transported in the red blood cells for expiration via the lungs, serve as a chemical buffer or is transported into the liver to serve as a substrate for pyruvate carboxylase for gluconeogenesis. Under condition of exclusively anaerobic glycolysis glucose produces lactate as an end product. Lactate is a metabolic dead end and it has to be shuttled out of the cell to prevent intracellular lactate accumulation. Carbonic anhydrase facilitates lactate transport in and out of the cells through monocarboxylate transporters. It facilitates transport of lactate from muscle and red blood cells into the liver where it serves as a substrate for gluconeogenesis. Both exogenous and endogenous glucose metabolism result in the production of this two metabolic dead end products (CO2 and lactate) which must be transported out of the cells to prevent intracellular accumulation, failure of which result in metabolic acidosis. Inhibition of carbonic anhydrase has long been found to cause metabolic acidosis. Salihu’s cycle provides a means of recycling these end products through ‘carbonic anhydrase’ to prevent intracellular accumulation and hence increase the amount of energy needs of the body through continues ATP production (Figure 1). The question is how does this glycolytic metabolic shift affects energy imbalance especially in diabetes and cancer?

endocrinology-metabolic-syndrome-Carbonic-anhydrase

Figure 1: Carbonic anhydrase between aerobic and anaerobic glycolysis.

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