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| Registros recuperados: 74 | |
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| Rasoul,Arashpour; Maryam,Haji GhasemKashani; Taghi,Ghorbanian Mohammad; Taghi,Lashkarbolouki; dehghan,Rada asle. |
| Carnosic acid, a diterpene of Rosemarinus officinalis leaves extract (RE), has potent antioxidant activity in vitro. The dopaminergic connection of substantia nigra pars compacta to the hippocampus might be affected by oxidative stress which caused cognitive impairment observed in the early phase of Parkinson's disease (PD). Adult male Wistar rats were lesioned bilaterally by intra-nigral injection of 6-OHDA, and divided into six groups: four groups that orally given RE containing 40% of carnosic acid, at doses of 25, 50 and 100 mg/kg (treated rats) and distilled water (H2O), once daily for a period of 14 days before and after the injury. There were also two another groups as control rats which injected by normal saline and untreated lesion group. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rosmarinus officinalis leaves extract; Antioxidant enzymes; Hippocampus; 6-Hydroxydopamine. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100312 |
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| Caverzan,Andréia; Casassola,Alice; Brammer,Sandra Patussi. |
| Abstract Currently, food security depends on the increased production of cereals such as wheat (Triticum aestivum L.), which is an important source of calories and protein for humans. However, cells of the crop have suffered from the accumulation of reactive oxygen species (ROS), which can cause severe oxidative damage to the plants, due to environmental stresses. ROS are toxic molecules found in various subcellular compartments. The equilibrium between the production and detoxification of ROS is sustained by enzymatic and nonenzymatic antioxidants. In the present review, we offer a brief summary of antioxidant defense and hydrogen peroxide (H2O2) signaling in wheat plants. Wheat plants increase antioxidant defense mechanisms under abiotic stresses, such... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abiotic stress; Antioxidant enzymes; Hydrogen peroxide signaling; Wheat; Triticum aestivum. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000100001 |
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| PEJIĆ,SNEŽANA; TODOROVIĆ,ANA; STOJILJKOVIĆ,VESNA; GAVRILOVIĆ,LJUBICA; POPOVIĆ,NATAŠA; PAJOVIĆ,SNEŽANA B.. |
| ABSTRACTUterine leiomyomas are benign soft-tissues tumors that arise from uterine smooth muscle tissue. Etiopathogenesis of leiomyomas is not well understood. We aimed to examine whether antioxidant enzyme activities and lipid hydroperoxides level in patients with leiomyoma are influenced by changes in sex hormones and gonadotropins (estradiol (E2), progesterone, FSH, and LH) during menstrual cycle and in postmenopause. The material consisted of blood and uterine tissue specimens. Hormone concentrations were determined and assays for superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase activities and lipid hydroperoxides concentration were performed. In blood of examined women, a significant difference in catalase, glutathione... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant enzymes; Lipid hydroperoxides; Sex steroids; Leiomyoma. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401771 |
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| Bas,Hatice; Kalender,Suna. |
| ABSTRACT This study was done to evaluate the effects of lead nitrate and mercury chloride in testis tissues of Wistar rats. Lead nitrate and mercury chloride are widely used heavy metals in industry. Oral lead and mercury administrations to adult male rats at doses 45 mg/kg bw and 0.02 mg/kg bw, respectively for 4 weeks caused a significant increasing in MDA levels and antioxidant enzyme activities (SOD, CAT, GPx and GST). The MDA levels and acivities of antioxidant enzymes was lower in rats that were administrated by lead nitrate than mercury chloride treated group. Light microscopic analyses revealed that lead nitrate and mercury chloride induced numerous histopathological changes in testis tissues of rats. Histopathological observations of the testis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant enzymes; Lead; Mercury; Oxidative stress; Testis. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100341 |
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| FAHIM,FAWZIA A ; ESMAT,AMR Y; MADY,ESSAM A; IBRAHIM,EMAD K. |
| Treatment of tumor-bearing mice with LD12.5 values of iodoacetate; IAA (1.84 mg/100g b.w.) and/or dimethylsulphoxide; DMSO (350 mg/ 100g b.w.) significantly increased the cumulative mean survival time and percentage of survivors and reduced the mean tumor weight, compared to tumor-bearing controls, however, a more pronounced effect is recorded in the combined treatment. Also, an increase in the life span (ILS%) and tumor growth inhibition ratio (T/C%) are reported and amounted to 145.78 and 43.80%, 195.54 and 61.30% and 220.77 and 78.40% in IAA, DMSO and combined-treated groups, respectively. Results obtained from biochemical studies reveal that a single IAA treatment of tumor-bearing mice significantly increased the levels of plasma lactate dehydrogenase... |
| Tipo: Journal article |
Palavras-chave: Antioxidant enzymes; Carbohydrate metabolism dimethylsulphoxide; Iodoacetate; Solid Ehrlich carcinoma. |
| Ano: 2003 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602003000200015 |
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| Ribeiro,Márcia Vaz; Deuner,Sidnei; Benitez,Letícia Carvalho; Einhardt,Andersom Milech; Peters,José A.; Braga,Eugenia J. Bolacel. |
| Salinity is a limiting factor fot growth and development, since it affects several physiological processes in plants. This trial aimed to assess the levels of photosynthetic pigments, betacyanins, lipid peroxidation and activity of antioxidant enzymes in Alternanthera philoxeroides under salt stress. Plants originated from an in vitro culture were acclimatized and irrigated with sodium chloride (0, 200 and 400 mM) for 30 d. The experimental design was completely randomized with a 3×2 factorial arrangement of treatments: three concentrations of NaCl and two plant tissues (stems and leaves). The experimental data was subjected to an analysis of variance and means where compared using Tukey test (p≤0.05). The levels of chlorophylls a, chlorophylls b and total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amaranthaceae; Alligator weed; Sodium chloride; Photosynthetic pigments; Antioxidant enzymes. |
| Ano: 2014 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952014000200006 |
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| Monteiro,Carolina C.; Rolão,Milca B.; Franco,Mônica R.; Peters,Leila P.; Cia,Mariana C.; Capaldi,Flávia R.; Carvalho,Rogério F.; Gratão,Priscila L.; Rossi,Mônica L.; Martinelli,Adriana P.; Peres,Lázaro E.P.; Azevedo,Ricardo A.. |
| Biochemical responses inherent to antioxidant systems as well morphological and anatomical properties of photomorphogenic, hormonal and developmental tomato mutants were investigated. Compared to the non-mutant Micro-Tom (MT), we observed that the malondialdehyde (MDA) content was enhanced in the diageotropica (dgt) and lutescent (l) mutants, whilst the highest levels of hydrogen peroxide (H2O2) were observed in high pigment 1 (hp1) and aurea (au) mutants. The analyses of antioxidant enzymes revealed that all mutants exhibited reduced catalase (CAT) activity when compared to MT. Guaiacol peroxidase (GPOX) was enhanced in both sitiens (sit) and notabilis (not) mutants, whereas in not mutant there was an increase in ascorbate peroxidase (APX). Based on PAGE... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant enzymes; Leaf and root anatomy; Oxidative stress; Solanum lycopersicum. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200025 |
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| Silva,Patrícia Pereira da; Barros,Antonio Carlos Souza Albuquerque; Dias,Denise Cunha Fernandes dos Santos; Sekita,Marcelo Coelho; Nascimento,Warley Marcos. |
| ABSTRACT This study aimed to evaluate biochemical changes in seeds of the pumpkin hybrid, 'Jabras', from fruit harvested at different stages of maturation (15, 30, 45, 60 and 75 days after anthesis). Thirty fruit were harvested at each stage, with the seeds from 15 of the fruit being extracted immediately. The remaining 15 were stored for twenty days in plastic boxes and the seeds extracted after this period. After processing and drying the seeds, the following were determined: moisture content, germination, first count and antioxidant enzyme activity (peroxidase, ascorbate peroxidase, catalase and superoxide dismutase). Seeds from the fruit harvested at 30 DAA displayed low values for germination and vigour and high antioxidant enzyme activity, indicating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucurbita maxima; Cucurbita moschata; Antioxidant enzymes. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300558 |
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| Burgeot, Thierry; Bocquene, Gilles; Porte, C; Dimeet, Joel; Santella, Rm; Garcia De La Parra, L.m.; Pihol-leszkowicz, A.; Raoux, C.; Galgani, Francois. |
| Several bioindicators were used to evaluate the biological and genotoxic effects of marine pollutants near large coastal cities in the northwestern part of the Mediterranean Sea. Three target species of teleosts were selected: red mullet Mullus barbatus and 2 types of comber (Serranus hepatus and S. cabrilla). Induction of ethoxyresorufin-O-deethylase (EROD) activity specific for polycyclic aromatic hydrocarbons (PAH) and polychlorinated biphenyls (PCB) was measured in the livers of the fish, and inhibition of acetylcholinesterase (AChE) by organophosphorus insecticides and carbamates was measured in their muscle tissues. Maximal EROD activities (16.8 +/- 2.7 to 19.4 +/- 4.2 pmol min(-1) mg protein(-1)) recorded in red muller near Barcelona (Spain),... |
| Tipo: Text |
Palavras-chave: EROD; GST; AChE; Antioxidant enzymes; Biomonitoring; DNA adducts; PAH; Mullus barbatus. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00183/29410/27779.pdf |
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| Gavric,Jelena; Prokic,Marko; Despotovic,Svetlana; Gavrilovic,Branka; Radovanovic,Tijana; Borkovic-Mitic,Slavica; Pavlovic,Sladan; Saičic,Zorica. |
| This work examined the enzymatic (superoxide dismutase-CuZn SOD, catalase-CAT, glutathione peroxidase-GSHPx, glutathione reductase-GR, and the biotransformation phase II enzyme glutathione-S-transferase-GST) and nonenzymatic (total glutathione-GSH and lipid peroxides-TBARS concentrations) biomarkers of oxidative stress and acetylcholinesterase (AChE) activity in the blood of the grass snake (Natrix natrix L.) during prehibernation and posthibernation. The animals were collected in October (prehibernation) and April (posthibernation) at the nature reserve Obedska Bara (OB) and industrial region Pancevacki Rit (PR) in Serbia. In posthibernation, decreased CAT activity and TBARS concentration in specimens from PR, and decreased GR and AChE activities, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grass snake; Oxidative stress; Hibernation; Acetylcholinesterase; Antioxidant enzymes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000300443 |
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| Muradoglu,Ferhad; Gundogdu,Muttalip; Ercisli,Sezai; Encu,Tarik; Balta,Fikri; Jaafar,Hawa ZE; Zia-Ul-Haq,Muhammad. |
| BACKGROUND: Cadmium (Cd) is well known as one of the most toxic metals affecting the environment and can severely restrict plant growth and development. In this study, Cd toxicities were studied in strawberry cv. Camarosa using pot experiment. Chlorophyll and malondialdehyde (MDA) contents, catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX) activities and mineral nutrient concentrations were investigated in both roots and leaves of strawberry plant after exposure Cd. RESULTS: Cd content in both roots and leaves was increased with the application of increasing concentrations of Cd. We found higher Cd concentration in roots rather than in leaves. Chlorophyll a and b was decreased in leaves but MDA significantly increased under increased... |
| Tipo: Journal article |
Palavras-chave: Antioxidant enzymes; Cadmium; Chlorophyll; Heavy metal stress; Strawberry. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100011 |
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| Gonçalves,Jamile F.; Becker,Alexssandro G.; Cargnelutti,Denise; Tabaldi,Luciane A.; Pereira,Luciane B.; Battisti,Vanessa; Spanevello,Rosélia M.; Morsch,Vera M.; Nicoloso,Fernando T.; Schetinger,Maria R.C.. |
| In this study, the effects of cadmium (Cd) on lipid peroxidation, electrolyte leakage, protein oxidation, ascorbate peroxidase (APX; E.C. 1.11.1.11), catalase (CAT; E.C. 1.11.1.6) and superoxide dismutase (SOD; E.C. 1.15.1.1) activities, and ascorbic acid, non-protein thiol groups and total soluble protein contents in cucumber seedlings (Cucumis sativus L.) were investigated. Seedlings were grown in vitro in an agar-solidified substrate containing four Cd levels as CdCl2 (0, 100, 400, and 1000 µmol L-1) for 10 d. The lowest Cd level decreased the malondialdehyde concentration. Electrolyte leakage increased only at 1000 µmol Cd L-1, whereas protein oxidation and total soluble protein content were enhanced at 400 and 1000 µmol Cd L-1. Activity of APX was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant enzymes; Ascorbic acid; Cucumis sativus; Heavy metal; Lipid peroxidation; Protein oxidation. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000300006 |
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| Palma,Heloisa Einloft; Gallio,Miguel; Silva,Gabriele Biavaschi da; Cantarelli,Camila; Wolkmer,Patrícia; Salazar,Rodrigo Fernando dos Santos; Wergutz,Julien; Krause,Luciana Maria Fontanari; Krause,Alexandre; Brass,Karin Erica; Corte,Flavio Desessards De La. |
| ABSTRACT: Progressive deterioration and loss of articular cartilage are the final degenerative events common to osteoarthritis (OA). Reactive oxygen species (ROS) play an important role in this chondrocyte catabolic activity, leading to cell death and matrix components breakdown. Intra-articular corticosteroid injections such as triamcinolone acetonide have been used to control pain and inflammation associated with OA. New treatments for OA, platelet-rich plasma and pentosan polysulphate sodium have also been used and further investigations are necessary to determine their safety in joint cells. In this in vitro study, the use of these three substances (triamcinolone acetonide, platelet-rich plasma, and pentosan polysulphate sodium) in healthy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant enzymes; Catalase; Glutathione peroxidase; Lipid peroxidation. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000700602 |
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| AGOSTINETTO,D.; OLIVEIRA,C.; LANGARO,A.C.; NOHATTO,M.A.; MANICA-BERTO,R.. |
| ABSTRACT Herbicide resistance can cause biochemical, physiological, morphological and phenological changes in weeds, altering their competitive ability against crops. The aim of the study was to assess physiological changes and cellular damage in susceptible and resistant biotypes of ryegrass and soybeans under competition. Three experiments were conducted in a greenhouse using a completely randomized design with four replications performed in a replacement series. The ratios of soybean and to susceptible (experiment 1) and resistant ryegrass (experiment 2) and of susceptible to resistant (experiment 3) ryegrass were 100:0, 75:25, 50:50, 25:75 and 0:100. Forty days after the emergence of the soybean crop and 60 days after the emergence of the ryegrass... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oxidative stress; Antioxidant enzymes; Adaptability of herbicide resistant plants. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300517 |
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| Registros recuperados: 74 | |
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