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Hydrogen peroxide-induced oxidative damage in peripheral blood lymphocytes from rats chronically treated with corticosterone: The protective effect of oxytocin treatment

Authorized Users Only
2016
Authors
Stanić, Dušanka
Plećaš-Solarović, Bosiljka
Petrović, Jelena
Bogavac-Stanojević, Nataša
Sopić, Miron
Kotur-Stevuljević, Jelena
Ignjatović, Svetlana
Pešić, Vesna
Article (Published version)
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Abstract
Contemporary lifestyle is commonly associated with chronic stress, an environmental factor contributing to development of various psychological and somatic disorders. Increased levels of glucocorticoids, observed in the chronic stress, induce the production of reactive oxygen species leading to genotoxicity. The aim of this study was to investigate whether chronic administration of oxytocin (OXY) 10 IU/400 mu L/day, s.c., for 14 days, a hormone presumed to exert antioxidant effect, may prevent DNA damage in the comet assay of peripheral blood lymphocytes of Wistar rats treated chronically with corticosterone (CORT) 100 mg/L ad libitum, per os, for 21 days, as well as, to influence some plasma oxidative stress parameters, i.e. levels of total lipid hydroperoxide (LOOH), and malondialdehyde (MDA), and the activity of antioxidative enzyme superoxide dismutase (SOD). Even though there was no reduction in overall number of damaged cells after oxytocin treatment only, the marked increase in ...total comet score (TCS) after incubation with H2O2 in CORT group compared to controls, was absent in the CORT + OXY experimental group. Furthermore, significant decrease of highly damaged cells compared to corticosterone group was noted. Chronic oxytocin administration thus protected lymphocytes from high intensity damage that leads to cellular death. In addition, treatment with OXY along with CORT, significantly decreased concentration of LOOH in plasma, and increased SOD compared to CORT treatment only. This finding corresponds well with current reports on beneficial effects of OXY in conditions of HPA axis hyperactivity, and supports the hypothesis of OXY-mediated antioxidant action.

Source:
Chemico-Biological Interactions, 2016, 256, 134-141
Publisher:
  • Elsevier Ireland Ltd, Clare
Projects:
  • Biomarkers of organ damage and dysfunction (RS-175036)

DOI: 10.1016/j.cbi.2016.07.006

ISSN: 0009-2797

PubMed: 27402529

WoS: 000382341100015

Scopus: 2-s2.0-84978374810
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URI
http://farfar.pharmacy.bg.ac.rs/handle/123456789/2704
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  • Radovi istraživača / Researchers’ publications
Institution
Pharmacy

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