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48 results for “Reactive Oxygen Species”
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Research ArticleOpen accessIn the keywordsAntioxidant and Photosynthetic Responses in Plants Under Boron Toxicity: A ReviewLucia Guidi, Alberto Pardossi, Elena Degl’Innocenti, Marco LandiBoron (B) is a micronutrient that has long been known essential not only for plants and animals. Otherwise, in crop plants the range of B concentration from essentiality to toxicity appears extremely narrow. Although B deficiency has been well investigated, during recent years many researchers have also investigated boron toxicity effects, making progress in the comprehension of boron transport within … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 3 · 5 Jul 2012 · 12,769 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOligoglucans as Elicitors of an Enzymatic Antioxidant System in Zucchini Squash (Cucurbita pepo L.) Seedlings at Low TemperatureAbel Ceron-Garcia, Gustavo Adolfo Gonzalez-Aguilar, Irasema Vargas-Arispuro et al.Abstract: Problem statement: Non-controlled low temperatures affect physiological and biochemical processes leading to Reactive Oxygen Species (ROS) accumulation in plants, which normally are stabilized by the antioxidant system. Superoxide Dismutase (SOD), Ascorbate Peroxidase (APX) and Catalase (CAT) are the most important ROS-detoxification enzymes in stressed plants. Approach: The activity of these enzymes were examined in response to fungal Oligoglucans (OG) … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 1 · 15 Dec 2010 · 8,308 accessesView PDFCite
Research ArticleOpen accessIn the keywordsHormesis and Exercise: How the Cell Copes with Oxidative StressLi Li Ji, Zsolt Radak, Sataro GotoContraction-induced production of reactive oxygen and nitrogen species has been shown to cause oxidative stress to skeletal muscle, heart and other organs. As an adaptive response, muscle antioxidant defense systems are upregulated in response to exercise to restore intracellular prooxidantantioxidant homeostasis. Thus, both young and old animals and humans involved in regular exercise have shown reduced oxidative damage during acute … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 1 · 31 Mar 2008 · 7,818 accessesView PDFCite
Research ArticleOpen accessIn the keywordsRedox Sensing and Cardiac Myocyte Loss: Some Recent InsightsShyamal K. GoswamiGeneration of reactive oxygen-nitrogen species (ROS/RNS) has long been ascribed to pathophysiological conditions like ageing, neurodegenerative and cardiovascular disorders. However, more recent evidences suggest that while generation of ROS/RNS at a higher threshold is deleterious, at a lower dose these can act as second messengers, influencing specific cellular events like cell growth and differentiation, embryonic development, protection against ischemic injuries … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 4 · 31 Dec 2007 · 6,350 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSelenium Effect on Hyperoxia-Induced Glutathione Peroxidase Activity and Free Radicals Production in the BrainIsmaeel Bin-JaliahThe purpose of this study was to examine the behavior of Glutathione Peroxidase (GPx) activity and Free Radicals (FR) production in the brain during graded hyperoxia exposure with and without selenium preventive intake. Forty two adult male rats were assigned to seven groups, six animals each. The first group served as control and the second, third and fourth groups were … …American Journal of Environmental Sciences, Vol. 9, Issue 5 · 7 Dec 2013 · 6,748 accessesView PDFCite
Research ArticleOpen accessIn the keywordsBiomarkers of Oxidative DNA Damage and Soluble Fas/Fas Ligand in Type 2 Diabetic PatientsMohamed H. Mahfouz, Ibrahim A. Emara, Ghada A. OmarProblem statement: Involvement of oxidative stress in the pathogenesis of diabetic complications has been proposed. 8-hydroxy-2'-deoxyguanosine (8-OHdG) has been reported to serve as a new sensitive biomarker of the oxidative DNA damage in vivo. Apoptosis via Fas/Fas Ligand (FasL) interactions has been proposed to be a major T-cell-mediated effector mechanism in autoimmune diabetes. This study was undertaken to investigate whether … …American Journal of Applied Sciences, Vol. 9, Issue 4 · 3 Feb 2012 · 7,110 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffects of Melatonin in Prevention of Neuropathy in STZ-Induced Diabetic RatsNasser Zangiabadi, Vahid Sheibani, Majid Asadi-Shekaari et al.Problem statement: Diabetes mellitus occurs mainly with chronic polyneuropathy, and oxidative stress plays an important role in emergence of most neurologic and behavioral changes in diabetic patients. Many studies have focused on the beneficial effects of various antioxidants such as melatonin on diabetic neuropathy. The aim of this study is to evaluate the effect of melatonin in prevention of neuropathy … …American Journal of Pharmacology and Toxicology, Vol. 6, Issue 2 · 17 Sep 2011 · 9,362 accessesView PDFCite
Research ArticleOpen accessIn the keywordsProphylactic Effects of Melatonin on Sodium Valproate-Induced Neural Tube Defects and Skeletal Malformations in Rat EmbryosOmolbanin Rahgazar, Reza Ranjbar, Hossien Najafzadeh Varzi, Mahmood Khaksary MahabadyProblem statement: Some reports showed the teratogenic effects of sodium valproate can be prevented by application of antioxidant drugs and stimulation of the maternal immune system. Therefore, in this study, the prophylactic effect of melatonin on teratogenic effects of sodium valproate was compared. Approach: This study was performed on 31 pregnant rats that were divided into five groups. Control group … …American Journal of Applied Sciences, Vol. 8, Issue 5 · 17 May 2011 · 7,286 accessesView PDFCite
Research ArticleOpen accessIn the keywordsVitamin E and Beta Carotene Composition in Four Different Vegetable OilsAb. Gapor Md. Top, Halimah Muhamad, Aminah Abdullah et al.Problem statement: Some vegetable oils contains natural antioxidants such as beta carotene and vitamin E namely tocopherol and tocotrienol. Different vegetable oils contained different amount of vitamin E and β-carotene. Approach: Study was carried out to investigate the natural antioxidants (vitamin E and beta carotene) composition in four different vegetable oils [Red Palm Olein (RPO), palm plein (PO), Corn Oil … …American Journal of Applied Sciences, Vol. 8, Issue 5 · 17 May 2011 · 9,322 accessesView PDFCite
Research ArticleOpen accessIn the abstractCytotoxicity Evaluation of Curcumin-FITC Conjugates in Granulosa Cells Isolated from Ovarian Follicles of Kampung Chicken (Gallus gallus domesticus)Sukarman Hadi Jaya Putra, Mansur S, UmarudinLinking curcumin to fluorescein isothiocyanate (FITC) results in a hybrid fluorescent marker (curcumin-FITC) that exhibits improved stability and sensitivity in detection. This study sought to evaluate the biological safety and cytotoxic effects of curcumin-FITC on granulosa cells obtained from ovarian follicles (2-5 mm, F1-F4 stage) of Kampung chickens. Following fluorescent labeling with different concentrations of curcumin-FITC (0-100 μg/mL), cell viability … …OnLine Journal of Biological Sciences, Vol. 26, Issue 2 · 14 May 2026 · 1,503 accessesView PDFCite