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Torricelli P, Elia AC, Magara G, Feriotto G, Forni C, Borromeo I, De Martino A, Tabolacci C, Mischiati C, Beninati S. Reduction of oxidative stress and ornithine decarboxylase expression in a human prostate cancer cell line PC-3 by a combined treatment with α-tocopherol and naringenin. Amino Acids 2021; 53:63-72. [PMID: 33398525 DOI: 10.1007/s00726-020-02925-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 11/23/2020] [Indexed: 01/04/2023]
Abstract
Differentiation of a human aggressive PC-3 cancer cell line was obtained, in a previous investigation, by the synergic effect of α-tocopherol (α-TOC) and naringenin (NG). This combined treatment induced apoptosis and subsequent reduction of the PC-3 cell proliferation and invasion, by a pro-differentiating action. Since one of the peculiar characteristics of NG and α-TOC is their strong antioxidant activity, this study aimed to investigate their potential effect on the activity of the main enzymes involved in the antioxidant mechanism in prostate cancer cells. NG and α-TOC administered singularly or combined in the PC-3 cell line, affected the activity of several enzymes biomarkers of the cellular antioxidant activity, as well as the concentration of total glutathione (GSH + GSSG) and thiobarbituric acid reactive substances (TBARS). The combined treatment increased the TBARS levels and superoxide dismutase (SOD) activity, while decreased the glutathione S-transferase (GST), glutathione reductase (GR), and glyoxalase I (GI) activities. The results obtained indicate that a combined treatment with these natural compounds mitigated the oxidative stress in the human PC-3 cell line. In addition, a significant reduction of both ornithine decarboxylase (ODC) expression and intracellular levels of polyamines, both well-known positive regulators of cell proliferation, accompanied the reduction of oxidative stress observed in the combined α-TOC and NG treatment. Considering the established role of polyamines in cell differentiation, the synergism with NG makes α-TOC a potential drug for further study on the differentiation therapy in prostate cancer patients.
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Affiliation(s)
| | - Antonia Concetta Elia
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Gabriele Magara
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Giordana Feriotto
- Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
| | - Cinzia Forni
- Department of Biology, University of Tor Vergata, Rome, Italy
| | - Ilaria Borromeo
- Department of Physics, University of Tor Vergata, Rome, Italy
| | | | - Claudio Tabolacci
- Department of Oncology and Molecular Medicine, Istituto Superiore Di Sanità, Rome, Italy
| | - Carlo Mischiati
- Department of Neuroscience and Rehabilitation, University of Ferrara, via Luigi Borsari 46, 44121, Ferrara, Italy.
| | - Simone Beninati
- Department of Biology, University of Tor Vergata, Rome, Italy
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Yu B, Yan S, Zhou H, Dong R, Lei J, Chen C, Cao B. Overexpression of CsCaM3 Improves High Temperature Tolerance in Cucumber. FRONTIERS IN PLANT SCIENCE 2018; 9:797. [PMID: 29946334 PMCID: PMC6006952 DOI: 10.3389/fpls.2018.00797] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 05/24/2018] [Indexed: 05/15/2023]
Abstract
High temperature (HT) stress affects the growth and production of cucumbers, but genetic resources with high heat tolerance are very scarce in this crop. Calmodulin (CaM) has been confirmed to be related to the regulation of HT stress resistance in plants. CsCaM3, a CaM gene, was isolated from cucumber inbred line "02-8." Its expression was characterized in the present study. CsCaM3 transcripts differed among the organs and tissues of cucumber plants and could be induced by HTs or abscisic acid, but not by salicylic acid. CsCaM3 transcripts exhibited subcellular localization to the cytoplasm and nuclei of cells. Overexpression of CsCaM3 in cucumber plants has the potential to improve their heat tolerance and protect against oxidative damage and photosynthesis system damage by regulating the expression of HT-responsive genes in plants, including chlorophyll catabolism-related genes under HT stress. Taken together, our results provide useful insights into stress tolerance in cucumber.
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Affiliation(s)
- Bingwei Yu
- Department of Vegetable Science, College of Horticulture, South China Agricultural University, Guangzhou, China
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, Guangzhou, China
| | - Shuangshuang Yan
- Department of Vegetable Science, College of Horticulture, South China Agricultural University, Guangzhou, China
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, Guangzhou, China
| | - Huoyan Zhou
- Department of Vegetable Science, College of Horticulture, South China Agricultural University, Guangzhou, China
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, Guangzhou, China
| | - Riyue Dong
- Department of Vegetable Science, College of Horticulture, South China Agricultural University, Guangzhou, China
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, Guangzhou, China
| | - Jianjun Lei
- Department of Vegetable Science, College of Horticulture, South China Agricultural University, Guangzhou, China
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, Guangzhou, China
| | - Changming Chen
- Department of Vegetable Science, College of Horticulture, South China Agricultural University, Guangzhou, China
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, Guangzhou, China
| | - Bihao Cao
- Department of Vegetable Science, College of Horticulture, South China Agricultural University, Guangzhou, China
- Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture, Guangzhou, China
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Zeinali F, Homaei A, Kamrani E, Patel S. Use of Cu/Zn-superoxide dismutase tool for biomonitoring marine environment pollution in the Persian Gulf and the Gulf of Oman. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 151:236-241. [PMID: 29353173 DOI: 10.1016/j.ecoenv.2018.01.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 01/09/2018] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
Superoxide dismutase (SOD) is the pivotal antioxidant enzyme that defends organisms against the oxidative stresses of superoxide radicals. In this experimental study, purification of SOD from the leaves of Avicennia marina (grey mangrove or white mangrove) from the family Acanthaceae, located in Sirik mangrove forest on the shore of the Gulf of Oman was performed, for the intended characterization of SOD. The Sirik AmSOD (A. marina SOD) expressed optimum activity in the pH range of 6-9 with the maximum activity at pH 8. The optimal temperature for Sirik AmSOD activity was 70°C. Comparison of the pH and temperature optima in two regions (the Persian Gulf and the Gulf of Oman) showed significant differences with P<0.05. The SOD from the Persian Gulf was more resistant against the environmental stressors, because of the biochemical adaption to this environment, which is harsher. The evidence from these results suggests that AmSOD has different characteristics in each place, and mangroves undergo different adaptations and require different protections. The results of the enzymatic research can be useful for ecological management of organisms.
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Affiliation(s)
- Farrokhzad Zeinali
- Department of Marine Biology, Faculty of Sciences, Hormozgan University, Bandarabbas, Iran
| | - Ahmad Homaei
- Department of Biochemistry, Faculty of Sciences, Hormozgan University, Bandarabbas, Iran.
| | - Ehsan Kamrani
- Department of Marine Biology, Faculty of Sciences, Hormozgan University, Bandarabbas, Iran; Fisheries Department, Faculty of Marine Sciences, University of Hormozgan, Bandar Abbas, Iran
| | - Seema Patel
- Bioinformatics and Medical Informatics Research Center, San Diego State University, San Diego 92182, USA
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Role of Moringa oleifera in regulation of diabetes-induced oxidative stress. ASIAN PAC J TROP MED 2013; 6:426-32. [DOI: 10.1016/s1995-7645(13)60068-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 04/15/2013] [Accepted: 05/15/2013] [Indexed: 11/23/2022] Open
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Metrology for metalloproteins—where are we now, where are we heading? Anal Bioanal Chem 2013; 405:5697-723. [DOI: 10.1007/s00216-013-6933-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 03/18/2013] [Accepted: 03/19/2013] [Indexed: 01/10/2023]
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Abstract
Spores of Clostridium difficile play a key role in the dissemination of this important human pathogen, and until recently little has been known of their functional characteristics. Genes encoding six spore coat proteins (cotA, cotB, cotCB, cotD, cotE, and sodA) were disrupted by ClosTron insertional mutagenesis. Mutation of one gene, cotA, presented a major structural defect in spore assembly, with a clear misassembly of the outermost layers of the spore coat. The CotA protein is most probably subject to posttranslational modification and could play a key role in stabilizing the spore coat. Surprisingly, mutation of the other spore coat genes did not affect the integrity of the spore, although for the cotD, cotE, and sodA mutants, enzyme activity was reduced or abolished. This could imply that these enzymatic proteins are located in the exosporium or alternatively that they are structurally redundant. Of the spore coat proteins predicted to carry enzymatic activity, three were confirmed to be enzymes using both in vivo and in vitro methods, the latter using recombinant expressed proteins. These were a manganese catalase, encoded by cotD, a superoxide dismutase (SOD), encoded by sodA, and a bifunctional enzyme with peroxiredoxin and chitinase activity, encoded by cotE. These enzymes being exposed on the spore surface would play a role in coat polymerization and detoxification of H2O2. Two additional proteins, CotF (a tyrosine-rich protein and potential substrate for SodA) and CotG (a putative manganese catalase) were shown to be located at the spore surface.
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Hossain ST, Mallick I, Mukherjee SK. Cadmium toxicity in Escherichia coli: Cell morphology, Z-ring formation and intracellular oxidative balance. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 86:54-59. [PMID: 23063080 DOI: 10.1016/j.ecoenv.2012.09.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 09/19/2012] [Accepted: 09/20/2012] [Indexed: 06/01/2023]
Abstract
This article deals with toxicological study of cadmium (Cd) as CdCl(2) on the growth and cell morphology of Escherichia coli K-12 MG1655. The minimum inhibitory concentration of Cd was 15μM. When cadmium was added at mid-log phase, growth was completely inhibited at 0.6mM and 50% of the bacterial growth retardation was found at 0.3mM concentration. At sublethal dose of Cd (0.2mM), majority of the cells showed filamentous form, suggested the possible effect of Cd on cell division. AFM study of bacterial cell morphology revealed severe surface damage of the treated cells in comparison to untreated cells. The expression of FtsZ decreased both at transcriptional and translational levels with the time of Cd exposure, thus cell division was affected and as a result cells took filamentous form. Due to Cd exposure, the nucleoid segregation remained unaffected, but improper Z-ring formation was observed. Activities of peroxidase and superoxide dismutase significantly decreased in treated cells with exposure time, which might elevate intracellular ROS level, as a consequence metabolic dysfunction and toxic effect were resulted.
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Belluzzi E, Bisaglia M, Lazzarini E, Tabares LC, Beltramini M, Bubacco L. Human SOD2 modification by dopamine quinones affects enzymatic activity by promoting its aggregation: possible implications for Parkinson's disease. PLoS One 2012; 7:e38026. [PMID: 22723845 PMCID: PMC3377658 DOI: 10.1371/journal.pone.0038026] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 04/28/2012] [Indexed: 01/04/2023] Open
Abstract
Mitochondrial dysfunction and oxidative stress are considered central in dopaminergic neurodegeneration in Parkinson’s disease (PD). Oxidative stress occurs when the endogenous antioxidant systems are overcome by the generation of reactive oxygen species (ROS). A plausible source of oxidative stress, which could account for the selective degeneration of dopaminergic neurons, is the redox chemistry of dopamine (DA) and leads to the formation of ROS and reactive dopamine-quinones (DAQs). Superoxide dismutase 2 (SOD2) is a mitochondrial enzyme that converts superoxide radicals to molecular oxygen and hydrogen peroxide, providing a first line of defense against ROS. We investigated the possible interplay between DA and SOD2 in the pathogenesis of PD using enzymatic essays, site-specific mutagenesis, and optical and high-field-cw-EPR spectroscopies. Using radioactive DA, we demonstrated that SOD2 is a target of DAQs. Exposure to micromolar DAQ concentrations induces a loss of up to 50% of SOD2 enzymatic activity in a dose-dependent manner, which is correlated to the concomitant formation of protein aggregates, while the coordination geometry of the active site appears unaffected by DAQ modifications. Our findings support a model in which DAQ-mediated SOD2 inactivation increases mitochondrial ROS production, suggesting a link between oxidative stress and mitochondrial dysfunction.
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Affiliation(s)
- Elisa Belluzzi
- Department of Biology, University of Padova, Padova, Italy
| | - Marco Bisaglia
- Department of Biology, University of Padova, Padova, Italy
| | | | - Leandro C. Tabares
- CEA, Institut de biologie et de technologies de Saclay, Service de Bioénergétique, Biologie Structurale et Mécanismes, Gif-sur-Yvette, France
| | - Mariano Beltramini
- Department of Biology, University of Padova, Padova, Italy
- * E-mail: (LB); (MB)
| | - Luigi Bubacco
- Department of Biology, University of Padova, Padova, Italy
- * E-mail: (LB); (MB)
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Kidney-specific deletion of multidrug resistance-related protein 2 does not aggravate acute cyclosporine A nephrotoxicity in rats. Pharmacogenet Genomics 2012; 22:408-20. [DOI: 10.1097/fpc.0b013e32834a9bfd] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Turchi A, Tamantini I, Camussi AM, Racchi ML. Expression of a metallothionein A1 gene of Pisum sativum in white poplar enhances tolerance and accumulation of zinc and copper. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 183:50-6. [PMID: 22195577 DOI: 10.1016/j.plantsci.2011.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 11/08/2011] [Accepted: 11/10/2011] [Indexed: 05/24/2023]
Abstract
Metallothioneins (MT) play an important role in heavy metal detoxification and homeostasis of intracellular metal ions in plant. In this study, two transgenic lines expressing MT type 2 gene (PsMT(A1)) from Pisum sativum, a regenerated non transformed line NT and clone AL22, selected as heavy metal tolerant, were characterized in presence of the heavy metals for the ability to accumulate zinc and copper and to activate antioxidative enzyme defences: superoxide dismutase, catalase, ascorbate peroxidase. The levels of expression of MT type 2 gene assessed by RT-qPCR confirmed the gene over-expression in transgenic lines and evidenced in NT and AL22 the up-regulation of gene transcription by zinc and copper. Transgenic poplar lines during heavy metal stress displayed increased ability to translocate and accumulate zinc and copper compared with NT and AL22. The antioxidant enzyme defence was differently activated in response to metals in the transgenic lines without a significant increase of ROS. These results suggested that PsMT(A1) could play a role in ROS scavenging leading to enhanced metal tolerance and increased zinc and copper sequestration in root and leaf.
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Affiliation(s)
- Adelaide Turchi
- Department of Agricultural Biotechnology, Genetics section, via Maragliano 77, 50144 Florence, Italy
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Yoon MY, Hwang JH, Park JH, Lee MR, Kim HJ, Park E, Park HR. Neuroprotective Effects of SG-168 Against Oxidative Stress-Induced Apoptosis in PC12 Cells. J Med Food 2011; 14:120-7. [DOI: 10.1089/jmf.2010.1027] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Mi-Young Yoon
- Department of Food Science and Biotechnology, Kyungnam University, Masan, Republic of Korea
| | - Ji-Hwan Hwang
- Department of Biological Information Research Center, Advanced Industrial Science & Technology, Tokyo, Japan
| | - Jae-Hee Park
- Department of Food and Nutrition, Kyungnam University, Masan, Republic of Korea
| | - Mi-Ra Lee
- Department of Food Science and Biotechnology, Kyungnam University, Masan, Republic of Korea
| | - Hyun-Jung Kim
- Department of Food Science and Biotechnology, Kyungnam University, Masan, Republic of Korea
| | - Eunju Park
- Department of Food and Nutrition, Kyungnam University, Masan, Republic of Korea
| | - Hae-Ryong Park
- Department of Food Science and Biotechnology, Kyungnam University, Masan, Republic of Korea
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Martínez-Villaluenga C, Zieliński H, Frias J, Piskuła MK, Kozłowska H, Vidal-Valverde C. Antioxidant capacity and polyphenolic content of high-protein lupin products. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.05.040] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lu Z, Li CM, Bao H, Qiao Y, Toh Y, Yang X. Mechanism of antimicrobial activity of CdTe quantum dots. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:5445-52. [PMID: 18419147 DOI: 10.1021/la704075r] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The antimicrobial activity and mechanism of CdTe quantum dots (QDs) against Escherichia coli were investigated in this report. Colony-forming capability assay and atomic force microscopy (AFM) images show that the QDs can effectively kill the bacteria in a concentration-dependent manner. Results of photoluminescence spectrophotometry, confocal microscopy, and antioxidative response tests indicate that the QDs bind with bacteria and impair the functions of a cell's antioxidative system, including down-regulations of antioxidative genes and decreases of antioxidative enzymes activities. The oxidative damage of protein and lipid is also observed with thiobarbituric reacting substances and protein carbonyl assays, respectively. On the basis of these results, it is proposed that the mechanism of the antimicrobial activity of CdTe QDs involves QDs-bacteria association and a reactive oxygen species-mediated pathway. Thus, CdTe QDs could have the potential to be formulated as a novel antimicrobial material with excellent optical properties.
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Affiliation(s)
- Zhisong Lu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
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Zieliński H, Michalska A, Ceglińska A, Lamparski G. Antioxidant properties and sensory quality of traditional rye bread as affected by the incorporation of flour with different extraction rates in the formulation. Eur Food Res Technol 2007. [DOI: 10.1007/s00217-007-0576-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Keyhani E, Ghamsari L, Keyhani J, Hadizadeh M. Antioxidant Enzymes during Hypoxia-Anoxia Signaling Events inCrocus sativusL. Corm. Ann N Y Acad Sci 2006; 1091:65-75. [PMID: 17341603 DOI: 10.1196/annals.1378.055] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The activity of reactive oxygen species (ROS)-scavenging enzymes, catalase, superoxide dismutase (SOD), glutathione peroxidase, o-dianisidine and ascorbate peroxidases, was investigated in Crocus sativus L. corms cultivated in normoxic and hypoxic-anoxic conditions. The activity of the ROS-scavenging enzymes studied varied during cultivation. However, the pattern of ROS-scavenging enzymes production was different in corms cultivated in normoxic and hypoxic-anoxic conditions. In normoxic conditions, only the activities of peroxidases and SOD were stimulated. In dormant corms placed under hypoxia-anoxia, the activities of catalase, SOD, and glutathione peroxidase were stimulated, with the highest stimulation observed for catalase, followed by SOD, and then glutathione peroxidase. In corms that had been rooted for 3 days before being placed in hypoxia-anoxia, the activities of all ROS-scavenging enzymes studied were stimulated with the highest stimulation still observed for catalase, followed by the peroxidases, and finally SOD. Thus catalase was the prevailing enzyme produced under hypoxia-anoxia.
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Affiliation(s)
- Ezzatollah Keyhani
- Institute of Biochemistry and Biophysics, University of Tehran, P.O. Box 13145-1384, 13145 Tehran, Iran.
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