Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues

Abstract There are only a few reports examining the impact of oxidative stress in patients with benign and malignant brain tumors. In this study we investigated whether there are changes in antioxidant system (AOS) parameters and key trace elements between control, benign and malignant brain tissues...

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Autores principales:	Slavica Borković-Mitić, Aleksandar Stojsavljević, Ljiljana Vujotić, Siniša Matić, Bojan Mitić, Dragan Manojlović, Slađan Pavlović
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d79418e3ff9f4fd78bb7aec2cae35151
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spelling	oai:doaj.org-article:d79418e3ff9f4fd78bb7aec2cae351512021-12-02T16:26:29ZDifferences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues10.1038/s41598-021-94302-52045-2322https://doaj.org/article/d79418e3ff9f4fd78bb7aec2cae351512021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94302-5https://doaj.org/toc/2045-2322Abstract There are only a few reports examining the impact of oxidative stress in patients with benign and malignant brain tumors. In this study we investigated whether there are changes in antioxidant system (AOS) parameters and key trace elements between control, benign and malignant brain tissues. The study also aimed to examine correlations between the analyzed parameters. The study enrolled both types of brain tumors, benign tumors (BT) and malignant tumors (MT). The results were compared with control tissue (CT) without tumor infiltration collected from patients with BT. The following antioxidant parameters were determined: activities of total, manganese-containing, and copper/zinc-containing superoxide dismutase (TotSOD, MnSOD and CuZnSOD), activities of catalase, glutathione peroxidase, glutathione S-transferase, glutathione reductase and acetylcholine esterase (AChE), the concentrations of glutathione and sulfhydryl groups and of manganese (Mn), copper (Cu), zinc (Zn), and selenium (Se). BT and MT had altered activities/levels of multiple AOS parameters as compared to CT, indicating that tumor cells had an altered cell metabolism and changes in AOS represent adaptive response to increased oxidative stress. Low MnSOD and AChE and high GST activities were significant for distinguishing between MT and CT. Malignant tissue was also characterized by lower Mn and Cu concentrations relative to CT and BT. Principal Component Analysis clearly discriminated BT from CT and MT (PC1, 66.97%), while PC2 clearly discriminated CT from BT and MT (33.03%). Most correlative relationships were associated with Se in the BT group and Cu in the MT group. The results of this study reveal differences between the AOS parameters and the essential trace elements between the analyzed groups. The observed dysregulations show that oxidative stress could have an important role in disrupting brain homeostasis and its presence in the pathogenesis of benign and malignant brain tumors.Slavica Borković-MitićAleksandar StojsavljevićLjiljana VujotićSiniša MatićBojan MitićDragan ManojlovićSlađan PavlovićNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Slavica Borković-Mitić Aleksandar Stojsavljević Ljiljana Vujotić Siniša Matić Bojan Mitić Dragan Manojlović Slađan Pavlović Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues
description	Abstract There are only a few reports examining the impact of oxidative stress in patients with benign and malignant brain tumors. In this study we investigated whether there are changes in antioxidant system (AOS) parameters and key trace elements between control, benign and malignant brain tissues. The study also aimed to examine correlations between the analyzed parameters. The study enrolled both types of brain tumors, benign tumors (BT) and malignant tumors (MT). The results were compared with control tissue (CT) without tumor infiltration collected from patients with BT. The following antioxidant parameters were determined: activities of total, manganese-containing, and copper/zinc-containing superoxide dismutase (TotSOD, MnSOD and CuZnSOD), activities of catalase, glutathione peroxidase, glutathione S-transferase, glutathione reductase and acetylcholine esterase (AChE), the concentrations of glutathione and sulfhydryl groups and of manganese (Mn), copper (Cu), zinc (Zn), and selenium (Se). BT and MT had altered activities/levels of multiple AOS parameters as compared to CT, indicating that tumor cells had an altered cell metabolism and changes in AOS represent adaptive response to increased oxidative stress. Low MnSOD and AChE and high GST activities were significant for distinguishing between MT and CT. Malignant tissue was also characterized by lower Mn and Cu concentrations relative to CT and BT. Principal Component Analysis clearly discriminated BT from CT and MT (PC1, 66.97%), while PC2 clearly discriminated CT from BT and MT (33.03%). Most correlative relationships were associated with Se in the BT group and Cu in the MT group. The results of this study reveal differences between the AOS parameters and the essential trace elements between the analyzed groups. The observed dysregulations show that oxidative stress could have an important role in disrupting brain homeostasis and its presence in the pathogenesis of benign and malignant brain tumors.
format	article
author	Slavica Borković-Mitić Aleksandar Stojsavljević Ljiljana Vujotić Siniša Matić Bojan Mitić Dragan Manojlović Slađan Pavlović
author_facet	Slavica Borković-Mitić Aleksandar Stojsavljević Ljiljana Vujotić Siniša Matić Bojan Mitić Dragan Manojlović Slađan Pavlović
author_sort	Slavica Borković-Mitić
title	Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues
title_short	Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues
title_full	Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues
title_fullStr	Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues
title_full_unstemmed	Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues
title_sort	differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d79418e3ff9f4fd78bb7aec2cae35151
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Differences between antioxidant defense parameters and specific trace element concentrations in healthy, benign, and malignant brain tissues

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