Effect of Ammonium Pyrrolidinedithiocarbamate on the Development of Oxidative Stress in Biceps Femoris Muscles of Rats During Modelled Metabolic Syndrome

Abstract

Excessive consumption of high-calorie food, a sedentary lifestyle and increased psycho-emotional stress are risk factors for the development of metabolic syndrome. These factors are especially relevant for residents of countries with highly developed economies. Metabolic syndrome is accompanied not only by metabolic disorders, but also leads to the development of a systemic inflammatory response, which is associated with excessive production and circulation of cytokines in the blood. As a rule, the activation of the transcription factor NF-κB leads to an increase in the production of pro-inflammatory cytokines.
 The aim of this work is to determine the effect of the NF-κB transcription factor activation inhibitor on the activity of antioxidant enzymes, the production of superoxide anion radical, the content of oxidatively modified proteins, and the concentration of malondialdehyde in the biceps femoris muscle of rats who underwent experimental metabolic syndrome.
 The study included 24 sexually mature male Wistar rats weighing 200-260 g. The animals were divided into 4 groups of 6 animals each. The first group was the control group; the second group involved the rats exposed to metabolic syndrome simulated by adding a 20% fructose solution as the only source of drinking water to the standard vivarium diet for 60 days; the third group involved the animals received ammonium pyrrolidine dithiocarbamate in a dose of 76 mg/kg intraperitoneally 3 times a week for 60 days; the fourth group was exposed to the combined effect of the ammonium pyrrolidinedithiocarbamate administration during modeled metabolic syndrome. In this study we investigated a 10% homogenate of the biceps femoris muscle with the research focus on several parameters: superoxide anion radical production, superoxide dismutase and catalase activity, malondialdehyde concentration, and the presence of oxidatively modified proteins.
 Simulation of the metabolic syndrome led to the development of oxidative stress in the biceps muscle of rats that was accompanied by an increase in the production of the superoxide anion radical and a decrease in the activity of antioxidant enzymes. The administration of ammonium pyrrolidinedithiocarbamate during modeled metabolic syndrome caused a decrease in the basic production of superoxide anion radical, production of superoxide anion radical by the microsomal electron transport chain and production of superoxide anion radical by the mitochondrial electron transport chain by 30.28%, 26.21 %, and 27.00%, respectively, compared to the rats in metabolic syndrome group. Superoxide dismutase activity increased by 78.81% and catalase activity grew by 144.74% compared to the metabolic syndrome group. The concentration of free malondialdehyde under the administration of ammonium pyrrolidinedithiocarbamate during metabolic syndrome reduced by 51.80%, and the content of oxidatively modified proteins decreased by 31.74% compared to the metabolic syndrome group.
 The administration of ammonium pyrrolidinedithiocarbamate, an NF-κB transcription factor activation inhibitor, effectively prevents the development of oxidative stress in the biceps femoris muscle of rats with modeled metabolic syndrome.
 This study is a part of the initiative research project No. 0124U000092 "High- and low-intensity phenotypes of systemic inflammatory response: molecular mechanisms and new medical technologies for their prevention and correction".