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Oxidative Medicine and Cellular Longevity
Volume 2016 (2016), Article ID 3529149, 12 pages
Review Article

Is Liver Enzyme Release Really Associated with Cell Necrosis Induced by Oxidant Stress?

Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, UNAM, 04510 Mexico City, DF, Mexico

Received 19 July 2015; Accepted 11 October 2015

Academic Editor: Karina R. Gordillo

Copyright © 2016 Martha Lucinda Contreras-Zentella and Rolando Hernández-Muñoz. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Hepatic diseases are a major concern worldwide. Increased specific plasma enzyme activities are considered diagnostic features for liver diseases, since enzymes are released into the blood compartment following the deterioration of the organ. Release of liver mitochondrial enzymes is considered strong evidence for hepatic necrosis, which is associated with an increased production of ROS, often leading to greater hepatic lipid peroxidation. Lipotoxic mediators and intracellular signals activated Kupffer cells, which provides evidence strongly suggesting the participation of oxidant stress in acute liver damage, inducing the progression of liver injury to chronic liver damage. Elevated transaminase activities are considered as an index marker of hepatotoxicity, linked to oxidant stress. However, a drastic increase of serum activities of liver enzyme markers ought not necessarily to reflect liver cell death. In fact, increased serum levels of cytoplasmic enzymes have readily been observed after partial hepatectomy (PH) in the regenerating liver of rats. In this regard, we are now showing that in vitro modifications of the oxidant status affect differentially the release of liver enzymes, indicating that this release is a strictly controlled event and not directly related to the onset of oxidant stress of the liver.