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Effect of ethanol and acetaldehyde on intracellular protease activities in human liver, brain and muscle tissues in vitro

Lookup NU author(s): Dr David Mantle, Gavin Falkous

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Abstract

The effect of ethanol and acetaldehyde on the activity of a range of intracellular cytoplasmic and lysosomal proteolytic enzymes has been determined in human brain, liver and skeletal muscle tissues in vitro. There was a substantial degree of inhibition for most protease types in all tissues if sufficiently high concentrations of ethanol (10%, v/v; 1.7 mol/L) or acetaldehyde (1%, v/v; 0.17 mol/L) were used in the assay media. However, it was concluded that direct inhibition of proteases in vivo by ethanol or acetaldehyde is improbable, at the concentrations of these agents likely to pertain in vivo, and that any effect of these agents on intracellular protein catabolism must occur via a more subtle biochemical mechanism.

Publication metadata

Author(s): Mantle D, Falkous G, Peters TJ, Preedy VR

Publication type: Article

Publication status: Published

Journal: Clinica Chimica Acta

Year: 1999

Volume: 281

Issue: 1-2

Pages: 101-108

Print publication date: 01/03/1999

ISSN (print): 0009-8981

ISSN (electronic): 1873-3492

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/S0009-8981(98)00211-3

DOI: 10.1016/S0009-8981(98)00211-3

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