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| Registros recuperados: 292 | |
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| Lacroix, Camille; Richard, Gaelle; Seguineau, Catherine; Guyomarch, Julien; Moraga, Dario; Auffret, Michel. |
| Brest harbor (Bay of Brest, Brittany, France) has a severe past of anthropogenic chemical contamination, but inputs tended to decrease, indicating a reassessment of its ecotoxicological status should be carried out. Here, native and caged mussels (Mytilus spp.) were used in combination to evaluate biological effects of chronic chemical contamination in Brest harbor. Polycyclic aromatic hydrocarbon (PAH) contamination was measured in mussel tissues as a proxy of harbor and urban pollution. Biochemical biomarkers of xenobiotic biotransformation, antioxidant defenses, generation of reducing equivalents, energy metabolism and oxidative damage were studied in both gills and digestive glands of native and caged mussels. In particular, activities of... |
| Tipo: Text |
Palavras-chave: Marine biomonitoring; Chronic pollution; Blue mussel Mytilus spp.; Caging; Oxidative stress; Energetic metabolism; Bay of Brest. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00255/36654/35795.pdf |
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| Pinheiro,Hugo Alves; Borges,Regis; Silva,Marco Aurélio Pedron e; Centeno,Danilo Cruz. |
| Potato tubers (Solanum tuberosum L. cv. Binje) were stored at 18 and 4ºC in order to verify changes in mitochondrial metabolism, especially in the activities of the alternative oxidase (AOX) and plant uncoupling mitochondria protein (PUMP). Tubers were also sliced and submitted to artificial aging. The oxygen consumption rate (OCR), respiratory control (RC) and ADP/O ratio for mitochondria obtained after storage at 18ºC were not altered, regardless of the time of storage. Considerable increment in OCR, for both respiratory states 3 and 4, was observed after storing the tubers for five and ten days at 4ºC; and it was accomplished by reductions in RC and ADP/O. The AOX activity was evident after five days at 4ºC, and it was enhanced after ten days of storage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum L.; Mitochondrial swelling; Oxidative stress; Respiration. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200001 |
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| Cardoso,A.M.; Bagatini,M.D.; Roth,M.A.; Martins,C.C.; Rezer,J.F.P.; Mello,F.F.; Lopes,L.F.D.; Morsch,V.M.; Schetinger,M.R.C.. |
| The aim of this study was to compare the effect of an intermittent intense aerobic exercise session and a resistance exercise session on blood cell counts and oxidative stress parameters in middle-aged women. Thirty-four women were selected and divided into three groups: RE group (performing 60 min of resistance exercises, N = 12), spinning group (performing 60 min of spinning, N = 12), and control group (not exercising regularly, N = 10). In both exercise groups, lymphocytes and monocytes decreased after 1-h recuperation (post-exercise) compared to immediately after exercise (P < 0.05). Immediately after exercise, in both exercised groups, a significant increase in TBARS (from 16.5 ± 2 to 25 ± 2 for the spinning group and from 18.6 ± 1 to 28.2 ± 3 nmol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intermittent exercise; Anaerobic exercise; Oxidative stress; Immune suppression; Middle-aged women. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001200010 |
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| Dorneles,Athos Odin Severo; Pereira,Aline Soares; Sasso,Victória Martini; Possebom,Gessieli; Tarouco,Camila Peligrinotti; Schorr,Márcio Renan Weber; Rossato,Liana; Ferreira,Paulo Ademar Avela; Tabaldi,Luciane Almeri. |
| ABSTRACT Potato cultivation is widespread around the world, being exposed to several abiotic stresses, including soils with high aluminum (Al) availability. Silicon (Si) is recognized for alleviating the stress caused by Al in various plant species. Thus, the aim of this study was to investigate the potential of Si to mitigate the oxidative stress caused by Al in potato genotypes, exhibiting differential sensitivity toward this element. Plants of the Al-sensitive genotype (SMIJ319-7) and Al-tolerant genotype (SMIF212-3) were grown for two weeks in a hydroponic system with the nutrient solution containing combinations of Al (0 and 1.85 mM) and Si (0, 0.5 and 1.0 mM). At the end of the experiment, photosynthetic parameters, pigment content, root and shoot... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Beneficial elements; Enzyme activity; Oxidative stress; Toxic elements. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100012 |
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| KAUR,GURPREET; BALI,ANJANA; SINGH,NIRMAL; JAGGI,AMTESHWAR S.. |
| The present study was designed to investigate the ameliorative potential of Ocimumsanctum and its saponin rich fraction in chronic constriction injury-induced neuropathic pain in rats. The chronic constriction injury was induced by placing four loose ligatures around the sciatic nerve, proximal to its trifurcation. The mechanical hyperalgesia, cold allodynia, paw heat hyperalgesia and cold tail hyperalgesia were assessed by performing the pinprick, acetone, hot plate and cold tail immersion tests, respectively. Biochemically, the tissue thio-barbituric acid reactive species, super-oxide anion content (markers of oxidative stress) and total calcium levels were measured. Chronic constriction injury was associated with the development of mechanical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chronic constriction injury; Ocimum sanctum; Saponin rich fraction; Calcium; Oxidative stress. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100417 |
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| Silva-Sena,Geralda Gillian; Camporez,Daniela; Santos,Lígia Ramos dos; Silva,Aline Sesana da; Sagrillo Pimassoni,Lúcia Helena; Tieppo,Alessandra; Pimentel Batitucci,Maria do Carmo; Morelato,Renato Lírio; Paula,Flavia de. |
| Abstract Human longevity is a polygenic and multifactorial trait. Pathways related to lifespan are complex and involve molecular, cellular, and environmental processes. In this analytical observational study, we evaluated the relationship between environment factors, oxidative stress status, DNA integrity level, and the association of FOXO3 (rs2802292), SOD2 (rs4880), APOE (rs429358 and rs7412), and SIRT1 (rs2273773) polymorphisms with longevity in oldest-old individuals from southeastern Brazil. We found an association between the FOXO3 GG genotype and gender. While lifestyle, anthropometric, and biochemical characteristics showed significant results, DNA damage and oxidative stress were not related to lifespan. We found that long-lived individuals with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lifespan; SNPs; Environmental factors; Oxidative stress; Genomic damage. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000300386 |
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| Lu,W.; Kang,J.; Hu,K.; Tang,S.; Zhou,X.; Yu,S.; Li,Y.; Xu,L.. |
| Obstructive sleep apnea is associated with inflammation and oxidative stress in lung tissues and can lead to metabolic abnormalities. We investigated the effects of angiotensin1–7 [Ang-(1–7)] on lung injury in rats induced by chronic intermittent hypoxia (CIH). We randomly assigned 32 male Sprague-Dawley rats (180–200 g) to normoxia control (NC), CIH-untreated (uCIH), Ang-(1–7)-treated normoxia control (N-A), and Ang-(1–7)-treated CIH (CIH-A) groups. Oxidative stress biomarkers were measured in lung tissues, and expression of NADPH oxidase 4 (Nox4) and Nox subunits (p22phox, and p47phox) was determined by Western blot and reverse transcription-polymerase chain reaction. Pulmonary pathological changes were more evident in the uCIH group than in the other... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ang-(1–7); Lung injury; Obstructive sleep apnea; Inflammation; Oxidative stress; Chronic intermittent hypoxia. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016001000603 |
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| Lu,W.; Kang,J.; Hu,K.; Tang,S.; Zhou,X.; Yu,S.; Xu,L.. |
| We aimed to study the renal injury and hypertension induced by chronic intermittent hypoxia (CIH) and the protective effects mediated by angiotensin 1-7 [Ang(1-7)]. We randomly assigned 32 male Sprague-Dawley rats (body weight 180-200 g) to normoxia control, CIH, Ang(1-7)-treated normoxia, and Ang(1-7)-treated CIH groups. Systolic blood pressure (SBP) was monitored at the start and end of each week. Renal sympathetic nerve activity (RSNA) was recorded. CTGF and TGF-β were detected by immunohistochemistry and western blotting. Tissue parameters of oxidative stress were also determined. In addition, renal levels of interleukin-6, tumor necrosis factor-α, nitrotyrosine, and hypoxia-inducible factor-1α were determined by immunohistochemistry, immunoblotting,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ang(1-7); Renal injury; Obstructive sleep apnea; Inflammation; Oxidative stress; Fibrosis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100604 |
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| Venâncio,Vinícius Paula; Ferreira,Eric Batista; Brigagão,Maísa Ribeiro Pereira Lima; Paula,Fernanda Borges de Araújo; Barbisan,Luis Fernando; Azevedo,Luciana. |
| A. crassiflora Mart. a Brazilian savannah fruit, is a source of phytochemical compounds that possess a wide array of biological activities, including free radical scavenging. This native fruit proved to potentialize the mutagenic process in previous in vivo investigations. The aim of the present study was to investigate the effects of A. crassiflora Mart. pulp intake on colonic cell proliferation and on the development of Aberrant Crypt Foci (ACF) in male Wistar rats. The animals were fed with either a commercial diet or a diet supplemented with A. crassiflora Mart. pulp mixed in 1%, 10% or 20% (w/w) for 4 weeks or 20 weeks. The carcinogen 1,2-dimethylhydrazine dihydrochloride (4 doses, 40 mg kg-1 each) was used to induce colonic ACF. After euthanasia, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aberrant crypt foci; Brazilian savannah; Dimethylhydrazine; Immunohistochemistry; Oxidative stress. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000400008 |
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| Hernández-Salinas,Romina; Decap,Valerie; Leguina,Alberto; Cáceres,Patricio; Perez,Druso; Urquiaga,Ines; Iturriaga,Rodrigo; Velarde,Victoria. |
| BACKGROUND: Metabolic syndrome is a growing worldwide health problem. We evaluated the effects of wine grape powder (WGP), rich in antioxidants and fiber, in a rat model of metabolic syndrome induced by a high fructose diet. We tested whether WGP supplementation may prevent glucose intolerance and decrease oxidative stress in rats fed with a high fructose diet. METHODS: Male Sprague-Dawley rats weighing 180 g were divided into four groups according to their feeding protocols. Rats were fed with control diet (C), control plus 20 % WGP (C + WGP), 50 % high fructose (HF) or 50 % fructose plus 20 % WGP (HF + WGP) for 16 weeks. Blood glucose, insulin and triglycerides, weight, and arterial blood pressure were measured. Homeostasis model assessment (HOMA) index... |
| Tipo: Journal article |
Palavras-chave: Insulin resistance; Oxidative stress; Metabolic syndrome; Wine grape powder. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100053 |
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| PEREIRA,Débora Linsbinski; CUNHA,Ana Paula Simões DA; CARDOSO,Cássia Regina Primila; ROCHA,Cláudia Quintino DA; VILEGAS,Wagner; SINHORIN,Adilson Paulo; SINHORIN,Valéria Dornelles Gindri. |
| ABSTRACT The properties of oil-resin of copaiba, Copaifera multijuga are commonly mentioned in the literature, but there are few studies on extracts from its stem bark. We evaluated the antioxidant effects of ethanolic (EE) and ethyl acetate (EA) crude stem bark extracts from copaiba and compared them to rutin in a paracetamol (PCM)-induced oxidative stress model in mice. All test comparisons differed significantly. Hepatic catalase (CAT) and glutathione-S-transferase (GST) activity decreased in the PCM group, and there was an increase of protein carbonyls in the liver, kidney and brain. However, the protein carbonyls decreased in the liver for the PCM + EE group, in the kidneys for the PCM + EA and PCM + Rutin groups, and in the brain for all treatments.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oxidative stress; Acute intoxication; Acetaminophen; Copaiba. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000400347 |
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| Eger,Guilherme A.; Ferreira,Vinícius V.; Batista,Camila R.; Bonde,Henrique; Lima,Daniela D. de; Wyse,Angela T.S.; Cruz,Júlia N. da; Rodrigues,André F.; Magro,Débora D. Dal; Cruz,José G.P. da. |
| The present study aims to directly investigate the behavioral and antioxidant effects of simvastatin in a model of bipolar mania induced by lisdexamfetamine dimesylate. Wistar rats were treated for 30 days with simvastatin. On the 24th day after the start of treatment, each rat was administered lisdexamfetamine dimesylate for 7 days. The results suggest that simvastatin combined with lisdexamfetamine dimesylate induced a significant increased locomotion and lisdexamfetamine dimesylate administration causes an oxidative imbalance determined by an increment in lipid peroxidation, protein oxidation and alterations in the activities of antioxidant enzymes in brain areas; moreover, in the presence of simvastatin, most of these effects were prevented. These... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphetamine; Lisdexamfetamine dimesylate; Oxidative stress; Simvastatin. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100335 |
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| Registros recuperados: 292 | |
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