Oxidative stress and antioxidant parameters in dogs with lymphoma during chemotherapy
Main Article Content
Abstract
Purpose: Oxidative stress is a contributor in the development of neoplasms. OS is involved in multidrug resistance, adverse events, and outcome.
Methods: Forty- two dogs with lymphoma have been included in the study, 30 of which were treated by Cyclophosphamide - Hydroxyldaunorubicin® (doxorubicin) - Oncovin® (vincristine) - Prednisolone (CHOP)-based protocol. Tumor samples were excised for histopatholgy, immunophenotyping, Ki67%, and biochemical analyses. Thiobarbituric acid reactive substances (TBARS), reduced and oxidized glutathione (GSH, GSSG), glutathione peroxidase (GSH-Px), Cu-Zn-superoxide dismutase (SOD), ferric reducing ability (FRAP), vitamin-C, -E, retinyl palmitate and trans-retinol in red blood cell hemolysates, lymph node homogenates, and blood plasma have been measured. The results were correlated with the outcome of the chemotherapy.
Results: Median overall survival time (OST), relapse-free period (RFP) were 862 and 280 days, respectively, with adverse effects in 18 cases.
Plasma GSH levels increased with age (dogs from 1 to 6 years vs 9 to 13 years, p = 0.0385). Lymph node FRAP levels were higher in samples with higher Ki67%, and plasma GSH/GSSG ratio was lower in dogs with increased OST and RFP. Plasma retinyl palmitate levels were lower in dogs with increased RFP. Overall survival time was increased with lower lymph node TBARS (cut off: 53 nmol/mg protein), GHS-Px (cut off: 16 U/mg protein), and higher plasma all-trans-retinol (cut off: 4 mg/ml). Relapse-free period was increased with lower lymph node TBARS (cut off: 53 nmol/mg protein), lower FRAP (cut off: 6 µmol/mg) and higher SOD (cut off: 70 U/mg protein). During chemotherapy a gradual increase in plasma vitamin E and C concentrations was detected, while GSH and GSSG showed a decrease before adverse events.
Conclusion: Although oxidative stress parameters varied, some parameters, i.e. TBARS, GSH-Px, SOD, FRAP measured in lymph node samples, and plasma all-trans retinol might be used as prognostic indices.
Article Details
How to Cite
VAJDOVICH, Peter et al.
Oxidative stress and antioxidant parameters in dogs with lymphoma during chemotherapy.
Medical Research Archives, [S.l.], v. 12, n. 8, aug. 2024.
ISSN 2375-1924.
Available at: <https://esmed.org/MRA/mra/article/view/5564>. Date accessed: 04 dec. 2024.
doi: https://doi.org/10.18103/mra.v12i8.5564.
Section
Research Articles
The Medical Research Archives grants authors the right to publish and reproduce the unrevised contribution in whole or in part at any time and in any form for any scholarly non-commercial purpose with the condition that all publications of the contribution include a full citation to the journal as published by the Medical Research Archives.
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83. Reference intervals
84. Method: Box-Cox transformed data, Standard
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3. Karihtala P, Soini Y. Reactive oxygen species and antioxidant mechanisms in human tissues and their relation to malignancies. APMIS. 2007;115(2):81-103. doi: 10.1111/j.1600-0463.2007.apm_514.x. PMID: 17295675.
4. Ishikawa T, Shigeoka S. Recent advances in ascorbate biosynthesis and the physiological significance of ascorbate peroxidase in photosynthesizing organisms. Biosci Biotechnol Biochem. 2008;72(5):1143-54. doi: 10.1271/bbb.80062. Epub 2008 PMID: 18460785.
5. Klaunig JE, Kamendulis LM, Hocevar BA. Oxidative stress and oxidative damage in carcinogenesis. Toxicol Pathol. 2010;38(1):96-109. doi: 10.1177/0192623309356453. Epub 2009 PMID: 20019356.
6. Maulik N, Das DK. Redox signaling in vascular angiogenesis. Free Radic Biol Med. 2002;33(8):1047-60. doi: 10.1016/s0891-5849(02)01005-5. PMID: 12374616.
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8. Ceriello A. Oxidative stress and glycemic regulation. Metabolism. 2000;49 (Suppl 1):27-9. doi: 10.1016/s0026-0495(00)80082-7. PMID: 10693917.
9. Weijl NI, Hopman GD, Wipkink-Bakker A, et al. Cisplatin combination chemotherapy induces a fall in plasma antioxidants of cancer patients. Ann Oncol. 1998;9(12):1331-7. doi: 10.1023/a:1008407014084. PMID: 9932164.c
10. Valko M, Rhodes CJ, Moncol J, et al. Free radicals, metals and antioxidants in oxidative stress-induced cancer. Chem Biol Interact. 2006;160(1):1-40. doi: 10.1016/j.cbi.2005.12.009. Epub 2006 PMID: 16430879.
11. Valko M, Leibfritz D, Moncol J, et al. Free radicals and antioxidants in normal physiological functions and human disease. Int J Biochem Cell Biol. 2007;39(1):44-84. doi: 10.1016/j.biocel.2006.07.001. Epub 2006 PMID: 16978905.
12. Peroja P, Pasinen AK, Haapasaan KM, et al. Oxidative stress and redox state-regulating enzymes have prognostic relevance in diffuse large B-cell lymphoma. Exp Hematol Oncol. 2012;1:2 doi: 10.1186/2162-3619-1-2 DOI:10.1186 %2 F2162-3619-1-2#pmc_ext.
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82. Appendix
83. Reference intervals
84. Method: Box-Cox transformed data, Standard