Activity of antioxidative defense enzymes in the blood of patients with liver echinococcosis

Abstract

Background/Aim. Chronic echinococcocal disease is the parasite human disease caused by the penetration of larval (asexual) stages of the canine tapeworm (Echinococcus granulosus) in the liver of humans. After the penetration of the parasite, the host organism react by activating complement- depending immune response. The aim of this study was to elucidate the influence of larval form of Echinococcus granulosus in the liver on the activity of antioxidative defense enzymes in the blood of patients before and after the surgical intervention. Methods. We investigated the activity of antioxidative defense enzymes: copper/zinc containing superoxide dismutase (CuZn SOD), catalase (CAT), glutathione peroxidase (GSH-Px), glutathione reductase (GR) and glutathione-S-transferase (GST) in the blood of patients before and after the surgical intervention in respect to the controls, clinically healthy persons. Results. Our results showed that the activity of the GSH-Px was significantly decreased in the plasma of the patients with echinocococal disease before the surgery in respect to the controls. The activity of GST was significantly higher in the blood of the patients after the surgery in comparison to the controls. Conclusion. Chronic liver echinoccocal disease caused significant changes of some antioxidative defense enzymes, first of all Se-dependent enzyme GSH-Px, which could be a suitabile biomarker in the biochemical evaluation of the disease. This work represents a first comprehensive study of the activity of antioxidative defense enzymes in cronic liver echinococcocosis in the patients before and after the surgical intervention in respect to the clinically healthy persons.Uvod/Cilj. Ehinokokusna bolest je parazitno oboljenje koje nastaje prodorom larvene forme pseće pantljičare (Echinococcus granulosus) u jetru čoveka, pri čemu dolazi do reakcije domaćina koji se brani od infektivnog agensa aktivacijom sistema komplementa i komplement-zavisnim imunim odgovorom. Cilj ovog rada bio je da se utvrdi da li razvoj larvenog oblika pseće pantljičare (Echinococcus granulosus) u jetri ima uticaja na aktivnost enzima sistema zaštite od oksidacionih oštećenja u krvi obolelih pre i posle operativnog zahvata. Metode. Ispitivane su promene aktivnosti enzima sistema zaštite od oksidacionih oštećenja: bakar/cink sadržavajuće superoksid-dismutaze (CuZn SOD), katalaze (CAT), glutation-peroksidaze (GSH-Px), glutation-reduktaze (GR) i glutation-S-transferaze (GST) u krvi obolelih od ehinokokusne bolesti jetre pre i posle operacije u odnosu na kontrolne, klinički zdrave osobe. Rezultati. Ustanovljen je statistički značajan pad aktivnosti enzima GSH-Px u plazmi bolesnika obolelih od ehinokokusne bolesti jetre pre operacije u odnosu na kontrolu. Aktivnost enzima GST bila je statistički značajno povećana u krvi obolelih od hronične ehinokokusne bolesti jetre posle operacije u odnosu na kontrolne vrednosti. Zaključak. Hronična ehinokokusna bolest jetre izaziva promene aktivnosti nekih enzima sistema zaštite od oksidacionih oštećenja, pre svega Se-zavisnog enzima GSH-Px, što može predstavljati dobar biomarker u daljoj biohemijskoj evaluaciji ove bolesti. Prema dostupnim podacima ovaj rad predstavlja prvu studiju aktivnosti enzima sistema zaštite od oksidacionih oštećenja kod obolelih od hronične ehinokokusne bolesti jetre pre i posle operacije u odnosu na kontrolne, klinički zdrave osobe.nul