1999
DOI: 10.1016/s0014-5793(99)00452-4
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The biological significance of non‐enzymatic reaction of menadione with plasma thiols: enhancement of menadione‐induced cytotoxicity to platelets by the presence of blood plasma

Abstract: To test the hypothesis that the non-enzymatic reaction of quinones with thiols in plasma can generate reactive oxygens (ROS), thereby leading to potentiated cellular toxicity, we have studied the effect of a representative quinone compound, menadione, on plasma isolated from rats. The experimental results are as follows: (1) menadione generated ROS via nonenzymatic reaction with protein thiols in plasma; (2) the presence of plasma increased menadione-induced cytotoxicity to platelets ; (3) pretreatment of plas… Show more

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Cited by 20 publications
(8 citation statements)
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“…Contact allergic reactions have been linked to 2-hydroxy-2,4-naphthoquinone (henna) (27), a principal ingredient in many types of body dyes (Bolhaar et al 2001;Calogiuri et al 2010). Menadione (21) has been also found to react non-enzymatically with protein thiols that are present in rat plasma and generate ROS that potentiate cellular injury to platelets (Chung et al 1999).…”
Section: Nucleophilic Addition Of Quinonesmentioning
confidence: 99%
“…Contact allergic reactions have been linked to 2-hydroxy-2,4-naphthoquinone (henna) (27), a principal ingredient in many types of body dyes (Bolhaar et al 2001;Calogiuri et al 2010). Menadione (21) has been also found to react non-enzymatically with protein thiols that are present in rat plasma and generate ROS that potentiate cellular injury to platelets (Chung et al 1999).…”
Section: Nucleophilic Addition Of Quinonesmentioning
confidence: 99%
“…It has been suggested that the cytotoxic effect of menadione is related to the generation of reactive oxygen species (ROS) by enzymatic reaction during its metabolism [8]. Menadione can generates ROS by non-enzymatic reaction with protein thiols in plasma [9]. Consistent with this observation, the thiol-depleting agent N-ethylmaleimide (NEM) suppresses menadione-induced ROS generation and cytotoxicity to platelet.…”
Section: Introductionmentioning
confidence: 99%
“…Menadione is a quinone which causes ROS generation from the mitochondrial and plastidal electron transport chains. Given its hydrophobic properties it can pass biological membranes easily to reach these organelles and releases ROS such as superoxide, hydrogen peroxide and hydroxyl radicals (Castro et al 2007; Chung et al 1999; Mauzeroll et al 2004). Detailed metabolic studies revealed a down-regulation of glycolysis and tricarboxylic acid (TCA) cycle and the redirection of carbon metabolism from glycolysis to oxidative pentose phosphate pathway (OPPP).…”
Section: Introductionmentioning
confidence: 99%