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Redox Report: Communications in Free Radical Research

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https://www.readbyqxmd.com/read/29962323/does-hypothyroidism-augment-sun-induced-skin-damage
#1
Georgeta Bocheva, Maria Valcheva-Traykova, Boycho Landzhov
OBJECTIVES: We investigated the mutual effects of overt hypothyroidism and prolonged sunlight exposure on free radical accumulation and oxidative skin damage. METHODS: Free radical accumulation was evaluated by monitoring the transformation of 3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide (MTT) into MTT-formazan. The pro-oxidant enzymes xanthine oxidase (XO) and NADPH-diaphorase were measured in the skin. XO activity was estimated based on the yield of uric acid, while NADPH-diaphorase reactivity was monitored histochemically as an indirect marker of nitric oxide synthase and nitric oxide activity...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29961403/rosuvastatin-alleviates-high-salt-and-cholesterol-diet-induced-cognitive-impairment-in-rats-via-nrf2-are-pathway
#2
Ibraheem Husain, Mohd Akhtar, Tushar Madaan, Malik Zainul Abdin, Mohammad Islamuddin, Abul Kalam Najmi
OBJECTIVE: The objectives of our study were to investigate the possible effect of rosuvastatin in ameliorating high salt and cholesterol diet (HSCD)-induced cognitive impairment and to also investigate its possible action via the Nrf2-ARE pathway. METHODS: In silico studies were performed to check the theoretical binding of rosuvastatin to the Nrf2 target. HSCD was used to induce cognitive impairment in rats and neurobehavioral studies were performed to evaluate the efficacy of rosuvastatin in enhancing cognition...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29961397/oxidative-insults-disrupt-opa1-mediated-mitochondrial-dynamics-in-cultured-mammalian-cells
#3
Iraselia Garcia, Wendy Innis-Whitehouse, Alma Lopez, Megan Keniry, Robert Gilkerson
OBJECTIVE: To explore the impact of oxidative insults on mitochondrial dynamics. In mammalian cells, oxidative insults activate stress response pathways including inflammation, cytokine secretion, and apoptosis. Intriguingly, mitochondria are emerging as a sensitive network that may function as an early indicator of subsequent cellular stress responses. Mitochondria form a dynamic network, balancing fusion, mediated by optic atrophy-1 (OPA1), and fission events, mediated by dynamin-related protein-1 (DRP1), to maintain homeostasis...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29897845/renal-mitochondrial-oxidative-stress-is-enhanced-by-the-reduction-of-sirt3-activity-in-zucker-diabetic-fatty-rats
#4
Yoshio Ogura, Munehiro Kitada, Itaru Monno, Keizo Kanasaki, Ai Watanabe, Daisuke Koya
OBJECTIVES: Mitochondrial oxidative stress is involved in the pathogenesis of diabetic kidney disease. The objective of our study is to identify the mechanisms of renal mitochondrial oxidative stress, focusing on Sirt3, which is nicotinamide adenine dinucleotide (NAD+ ; oxidized NAD)-dependent deacetylase in mitochondria. METHODS: Renal mitochondrial oxidative stress and Sirt3 activity, using Zucker diabetic fatty rats (ZDFRs) and cultured proximal tubular cells under high-glucose condition were evaluated...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29776315/aerobic-training-reduces-oxidative-stress-in-skeletal-muscle-of-rats-exposed-to-air-pollution-and-supplemented-with-chromium-picolinate
#5
Bruna Marmett, Ramiro Barcos Nunes, Kellen Sábio de Souza, Pedro Dal Lago, Cláudia Ramos Rhoden
OBJECTIVE: The purpose of this study was to investigate the effects of chromium picolinate (CrPic) supplementation associated with aerobic exercise using measures of oxidative stress in rats exposed to air pollution. METHODS: Sixty-one male Wistar rats were divided into eight groups: residual oil fly ash (ROFA) exposure and sedentary (ROFA-SED); ROFA exposure, sedentary and supplemented (ROFA-SED-CrPic); ROFA exposure and trained (ROFA-AT); ROFA exposure, supplemented and trained (ROFA-AT-CrPic); sedentary (Sal-SED); sedentary and supplemented (Sal-SED-CrPic); trained (Sal-AT); and supplemented and trained (Sal-AT-CrPic)...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29734881/effect-of-ubiquinol-supplementation-on-biochemical-and-oxidative-stress-indexes-after-intense-exercise-in-young-athletes
#6
Patrick Orlando, Sonia Silvestri, Roberta Galeazzi, Roberto Antonicelli, Fabio Marcheggiani, Ilenia Cirilli, Tiziana Bacchetti, Luca Tiano
OBJECTIVES: Physical exercise significantly impacts the biochemistry of the organism. Ubiquinone is a key component of the mitochondrial respiratory chain and ubiquinol, its reduced and active form, is an emerging molecule in sport nutrition. The aim of this study was to evaluate the effect of ubiquinol supplementation on biochemical and oxidative stress indexes after an intense bout of exercise. METHODS: 21 male young athletes (26 + 5 years of age) were randomized in two groups according to a double blind cross-over study, either supplemented with ubiquinol (200 mg/day) or placebo for 1 month...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29630472/proanthocyanidins-novel-treatment-for-psoriasis-that-reduces-oxidative-stress-and-modulates-th17-and-treg-cells
#7
Rui Lai, Dehai Xian, Xia Xiong, Lingyu Yang, Jing Song, Jianqiao Zhong
Psoriasis is a common, chronic, inflammatory skin disease that affects 2%-4% of the global population. Recent studies have shown that increased oxidative stress (OS) and T-cell abnormalities are central to the pathogenesis of this disease. The resulting reactive oxygen species (ROS) induces proliferation and differentiation of Th17/Th1/Th22 cells and inhibits the anti-inflammatory activities of regulatory T lymphocytes (Treg). Subsequent secretions of inflammatory cytokines, such as interleukin (IL)-17, IL-22, tumor necrosis factor alpha (TNF-α), and interferon-gamma (IFN-γ), and vascular endothelial growth factor (VEGF), stimulate keratinocyte proliferation and angiogenesis...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29606080/optimization-of-a-diagnostic-platform-for-oxidation-reduction-potential-orp-measurement-in-human-plasma
#8
David Polson, Nuria Villalba, Kalev Freeman
OBJECTIVES: Oxidation-reduction potential (ORP) measurement can demonstrate the extent of oxidative stress in patients with severe illness and/or injury. A novel ORP diagnostic platform using disposable sensors (RedoxSYS) has been validated by comparison to mass spectrometry, but the optimal methods of sample handling for best performance of the device have not been described. METHODS: We sought to optimize ORP measurement in human plasma under controlled conditions...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29494284/taurine-alleviates-endoplasmic-reticulum-stress-in-the-chondrocytes-from-patients-with-osteoarthritis
#9
Yiqun Bian, Hao Wang, Shui Sun
Osteoarthritis (OA), characterized by pain and stiffness, swelling, deformity and dysfunction of joints, affects large numbers of population. The purpose of this study was to discover the effects of taurine in human OA chondrocytes and explore the underlying mechanisms. 46 patients with different grades of OA were recruited. Of these patients, 24 underwent total knee replacement and cartilages were harvested. The mRNA expressions of type II collagen (Collagen II) and endoplasmic reticulum (ER) stress markers (GRP78, GADD153 and Caspase-12) in cartilages were quantified by qRT-PCR...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29298131/a-systematic-review-of-p53-regulation-of-oxidative-stress-in-skeletal-muscle
#10
REVIEW
Kaitlyn Beyfuss, David A Hood
BACKGROUND: p53 is a tumor suppressor protein involved in regulating a wide array of signaling pathways. The role of p53 in the cell is determined by the type of imposed oxidative stress, its intensity and duration. The last decade of research has unravelled a dual nature in the function of p53 in mediating the oxidative stress burden. However, this is dependent on the specific properties of the applied stress and thus requires further analysis. METHODS: A systematic review was performed following an electronic search of Pubmed, Google Scholar, and ScienceDirect databases...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29279041/exercise-through-a-cardiac-rehabilitation-program-attenuates-oxidative-stress-in-patients-submitted-to-coronary-artery-bypass-grafting
#11
José Francisco Taty Zau, Rodrigo Costa Zeferino, Nádia Sandrine Mota, Gerez Fernandes Martins, Salvador Manoel Serra, Therezil Bonates da Cunha, Daniel Medeiros Lima, Basilio de Bragança Pereira, Emília Matos do Nascimento, Danilo Wilhelm Filho, Rozangela Curi Pedrosa, Roberto Coury Pedrosa
BACKGROUND: Cardiovascular disease is the main cause of morbidity and mortality in the world and oxidative stress has been implicated in the pathogenesis. Cardiac rehabilitation in patients with coronary artery disease submitted to coronary artery bypass grafting may prevent cardiovascular events probably through the attenuation of oxidative stress. The aim of this study was to evaluate the benefits of a cardiac rehabilitation program in the control of the systemic oxidative stress. METHODS: The studied population consisted of 40 patients, with chronic stable coronary artery disease submitted to coronary artery bypass grafting, who attended a cardiac rehabilitation program...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29257712/redox-status-of-patients-before-cardiac-surgery
#12
Anna Katharina Schuh, Babak Sheybani, Esther Jortzik, Bernd Niemann, Jochen Wilhelm, Andreas Boening, Katja Becker
OBJECTIVES: Redox regulation plays a crucial role in balancing the cardiovascular system. In this prospective study we aimed to identify currently unknown correlations valuable to cardiovascular research and patient management. METHODS: Blood samples from 500 patients were collected directly before cardiosurgical interventions (Ethics Committee reference number 85/11). Four central redox parameters were determined together with about 30 clinical, anthropometric, and metabolic parameters...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29157186/a-high-caloric-diet-rich-in-soy-oil-alleviates-oxidative-damage-of-skeletal-muscles-induced-by-dexamethasone-in-chickens
#13
Hongchao Jiao, Kaifeng Zhou, Jingpeng Zhao, Xiaojuan Wang, Hai Lin
Objective Glucocorticoids (GCs) can induce oxidative damage in skeletal muscles. The purpose of this study was to demonstrate a high caloric (HC) diet rich in soy oil would change the oxidative stress induced by a GC. Methods The effect of dexamethasone (DEX) and HC diet on oxidative stress in plasma, skeletal muscles (M. pectoralis major, PM; M. biceps femoris, BF), and mitochondria were determined. The biomarkers of oxidative damage and antioxidative enzyme activity were determined. The fatty acid profile of muscles and the activities of complex I and II in mitochondria were measured...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29148924/influence-of-gestational-diabetes-on-the-activity-of-%C3%AE-aminolevulinate-dehydratase-and-oxidative-stress-biomarkers
#14
Fabiane Rodrigues, Leidiane de Lucca, Walter S Neme, Thissiane de Lima Gonçalves
OBJECTIVES: This study aimed to evaluate the activity of delta-aminolevulinate dehydratase (δ-ALA-D) and oxidative stress biomarkers in pregnant women with gestational diabetes mellitus (GDM), in order to demonstrate the involvement of oxidative stress in this condition, which presents pathophysiology still undetermined. METHODS: δ-ALA-D activity, lipid peroxidation estimated as the levels of thiobarbituric acid reactive substances (TBARS), protein (P-SH) and non-protein thiol (NP-SH) content, catalase (CAT) activity and concentration of vitamin C (VIT C) in samples of pregnant women with GDM (n = 48) and in healthy pregnant women (n = 30), who constituted the control group...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29088999/antioxidant-antihyperglycemic-and-antidyslipidemic-effects-of-brazilian-native-fruit-extracts-in-an-animal-model-of-insulin-resistance
#15
Juliane de Souza Cardoso, Pathise Souto Oliveira, Natália Pontes Bona, Flávia Aleixo Vasconcellos, Jucimara Baldissarelli, Marcia Vizzotto, Mayara Sandrielly Pereira Soares, Vanessa Plasse Ramos, Roselia Maria Spanevello, Claiton Leoneti Lencina, Rejane Giacomelli Tavares, Francieli Moro Stefanello
OBJECTIVE: Insulin resistance (IR) plays an important role in the development of many diseases, such as diabetes mellitus. Therefore, the aim of the present study was to evaluate the effects of the extracts from fruits native to Brazil on metabolic parameters and hepatic oxidative markers in an animal model of insulin resistance induced by dexamethasone (DEX). METHODS: Wistar rats received water or extracts of Eugenia uniflora or Psidium cattleianum, once a day for 21 days...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29088986/a-comparison-of-native-and-non-urate-total-antioxidant-capacity-of-fasting-plasma-and-saliva-among-middle-aged-and-older-subjects
#16
COMPARATIVE STUDY
Anna Gawron-Skarbek, Anna Prymont-Przymińska, Agnieszka Sobczak, Agnieszka Guligowska, Tomasz Kostka, Dariusz Nowak, Franciszek Szatko
OBJECTIVES: As plasma and salivary total antioxidant capacity (TAC) is mainly contributed by uric acid (UA), the present study measures non-urate TAC (Nu-TAC). The aim of the study was to correlate plasma native TAC, Nu-TAC and UA with their salivary analogues, and compare the UA contribution in both body fluids using two different methods. METHODS: The study involved 55 middle-aged and older subjects (66.7 ± 4.5 years). TAC was determined simultaneously with two methods (ferric reducing ability of plasma - FRAP, 2...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29088980/spectrophotometric-assays-for-measuring-redox-biomarkers-in-blood-and-tissues-the-nadph-network
#17
REVIEW
Aristidis S Veskoukis, Nikos V Margaritelis, Antonios Kyparos, Vassilis Paschalis, Michalis G Nikolaidis
Nicotinamide adenine dinucleotide (NAD+ /NADH) along with its phosphorylated form (NADP+ /NADPH) are two molecules ubiquitously present in all organisms, and they play key roles as cofactors in fundamental catabolic and anabolic processes, respectively. The oxidation of NADPH to NADP+ initiates a cascade of reactions, where a network of molecules is implicated. The molecules of this cascade form a network with eminent translational potential in redox metabolism. A special point of interest is that spectrophotometric assays have been developed both for NADH/NADPH and the molecules directly regulated by them...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28853330/activity-of-the-antioxidant-enzyme-paraoxonase-in-argentinean-children-living-at-high-altitude
#18
V Hirschler, M Martín, K Oestreicher, C Molinari, W Tetzlaff, E Botta, L Boero, F Brites
BACKGROUND: Children living at high altitude in San Antonio de los Cobres (SAC), Argentina, were shown to have lower high-density lipoprotein cholesterol (HDL-C) levels than Buenos Aires (BA) children. HDL antioxidant capacity is mainly attributed to paraoxonase1 (PON1). OBJECTIVE: To compare PON1 activity in indigenous SAC vs. BA children. METHODS: A cross-sectional study compared 158 SAC vs. 97 BA children (6-16 years). Anthropometric data and lipoprotein profile were measured...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28813209/galangin-a-natural-flavonoid-reduces-mitochondrial-oxidative-damage-in-streptozotocin-induced-diabetic-rats
#19
Amal A Aloud, Chinnadurai Veeramani, Chandramohan Govindasamy, Mohammed A Alsaif, Khalid S Al-Numair
OBJECTIVE: We designed this study to observe the effect of galangin on damaged mitochondria in the liver of diabetic rats. METHODS: Male albino Wistar rats were made diabetic by injecting streptozotocin (STZ) intraperitoneally (40 mg kg-1 body weight (BW)). Galangin (8 mg kg-1 BW) or glibenclamide (600 µg kg-1 BW) was given orally daily once for 45 days to both healthy and diabetic rats. RESULTS: Diabetic rats showed significant (P < 0...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28651456/phytochemical-treatments-target-kynurenine-pathway-induced-oxidative-stress
#20
REVIEW
K Parasram
OBJECTIVE: The objective of this paper was to link the phytochemical and metabolic research treating quinolinic acid induced oxidative stress in neurodegenerative disorders. METHODS: Quinolinic acid, a metabolite of the kynurenine pathway of tryptophan catabolism, plays a role in the oxidative stress associated with many neurological disorders and is used to simulate disorders such as Parkinson's disease. RESULTS: In these models, phytochemicals have been shown to reduce striatal lesion size, reduce inflammation and prevent lipid peroxidation caused by quinolinic acid...
December 2018: Redox Report: Communications in Free Radical Research
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