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carbonylated proteins

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https://www.readbyqxmd.com/read/29334650/environmentally-relevant-concentrations-of-glibenclamide-induce-oxidative-stress-in-common-carp-cyprinus-carpio
#1
Ericka María Guadalupe Martínez-Viveros, Hariz Islas-Flores, Octavio Dublán-García, Marcela Galar-Martínez, Nely SanJuan-Reyes, Sandra García-Medina, María Dolores Hernández-Navarro, Leobardo Manuel Gómez-Oliván
The hypoglycemic pharmaceutical glibenclamide (GLB) is widely used around the world. This medication is released into the environment by municipal, hospital and industrial wastewater discharges. Although there are reports of its environmental occurrence in the scientific literature, toxicity studies on aquatic species of commercial interest such as the common carp Cyprinus carpio are scarce. The present study aimed to evaluate the oxidative stress induced on C. carpio by environmentally relevant concentrations of GLB...
January 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29331741/extracellular-acidification-induces-ros-and-mptp-mediated-death-in-hek293-cells
#2
José Teixeira, Farhan Basit, Herman G Swarts, Marleen Forkink, Paulo J Oliveira, Peter H G M Willems, Werner J H Koopman
The extracellular pH (pHe) is a key determinant of the cellular (micro)environment and needs to be maintained within strict boundaries to allow normal cell function. Here we used HEK293 cells to study the effects of pHe acidification (24h), induced by mitochondrial inhibitors (rotenone, antimycin A) and/or extracellular HCl addition. Lowering pHe from 7.2 to 5.8 reduced cell viability by 70% and was paralleled by a decrease in cytosolic pH (pHc), hyperpolarization of the mitochondrial membrane potential (Δψ), increased levels of hydroethidine-oxidizing ROS and stimulation of protein carbonylation...
December 30, 2017: Redox Biology
https://www.readbyqxmd.com/read/29329834/heterospectral-two-dimensional-correlation-analysis-with-near-infrared-hyperspectral-imaging-for-monitoring-oxidative-damage-of-pork-myofibrils-during-frozen-storage
#3
Weiwei Cheng, Da-Wen Sun, Hongbin Pu, Qingyi Wei
Near-infrared (NIR) spectra contain abundant data, heterospectral two-dimensional correlation (H2D-CS) analysis offers a good way to interpret these data. For the first time, H2D-CS was used to correlate the NIR hyperspectral imaging (HSI) data with mid-infrared spectra and to identify feature-related wavebands for developing models for monitoring the oxidative damage of pork myofibrils during frozen storage. The HSI images were acquired at frozen state without thawing and the oxidative damage of myofibrils was assessed by carbonyl content...
May 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29324332/impaired-plasminogen-binding-in-patients-with-venous-thromboembolism-association-with-protein-carbonylation
#4
Jakub Siudut, Joanna Natorska, Michal Zabczyk, Dorota Zajac, Karolina Seweryn, Maria Rąpała-Kozik, Anetta Undas
INTRODUCTION: Venous thromboembolism (VTE) is associated with hypofibrinolysis. Its mechanisms are poorly understood. We investigated plasminogen-fibrin interaction and its association with fibrinolytic capacity and protein oxidation/carbonylation in VTE patients. MATERIALS AND METHODS: Plasma-purified plasminogen conversion to plasmin and surface plasmon resonance employed for plasminogen-fibrin interactions were individually evaluated in all healthy controls and non-anticoagulated patients following VTE, 10-23months since the event...
January 5, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29323048/topiramate-as-a-neuroprotective-agent-in-a-rat-model-of-spinal-cord-injury
#5
Firat Narin, Sahin Hanalioglu, Huseyin Ustun, Kamer Kilinc, Burcak Bilginer
Topiramate (TPM) is a widely used antiepileptic and antimigraine agent which has been shown to exert neuroprotective effects in various experimental traumatic brain injury and stroke models. However, its utility in spinal cord injury has not been studied extensively. Thus, we evaluated effects of TPM on secondary cellular injury mechanisms in an experimental rat model of traumatic spinal cord injury (SCI). After rat models of thoracic contusive SCI were established by free weight-drop method, TPM (40 mg/kg) was given at 12-hour intervals for four times orally...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29322938/mdd-carb-a-combinatorial-model-for-the-identification-of-protein-carbonylation-sites-with-substrate-motifs
#6
Hui-Ju Kao, Shun-Long Weng, Kai-Yao Huang, Fergie Joanda Kaunang, Justin Bo-Kai Hsu, Chien-Hsun Huang, Tzong-Yi Lee
BACKGROUND: Carbonylation, which takes place through oxidation of reactive oxygen species (ROS) on specific residues, is an irreversibly oxidative modification of proteins. It has been reported that the carbonylation is related to a number of metabolic or aging diseases including diabetes, chronic lung disease, Parkinson's disease, and Alzheimer's disease. Due to the lack of computational methods dedicated to exploring motif signatures of protein carbonylation sites, we were motivated to exploit an iterative statistical method to characterize and identify carbonylated sites with motif signatures...
December 21, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/29317251/organoselenium-group-is-critical-for-antioxidant-activity-of-7-chloro-4-phenylselenyl-quinoline
#7
Ane G Vogt, Guilherme T Voss, Renata L de Oliveira, Jaini J Paltian, Luis F B Duarte, Diego Alves, Cristiano R Jesse, Silvane S Roman, Juliano A Roehrs, Ethel A Wilhelm, Cristiane Luchese
The quinolone compounds have been reported for many biological properties, especially as potent antioxidants. This study investigated the antioxidant effect of 7-chloro-4-phenylselenyl-quinoline (PSQ), a quinolone derivative with organoselenium group, against oxidative stress induced by sodium nitroprusside (SNP) in brains of mice. A second objective was to verify the importance of phenylselenyl group presents at position 4 of the quinoline structure to antioxidant effect of compound. So, it was compared the antioxidant effect of PSQ with a quinoline without organoseleniun group (7-chloroquinoline [QN])...
January 6, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29316220/interactive-effects-of-hypoxia-and-pcb-co-exposure-on-expression-of-cyp1a-and-its-potential-regulators-in-atlantic-croaker-liver
#8
Md Saydur Rahman, Peter Thomas
Although marine and coastal environments which are contaminated with xenobiotic organic compounds often become hypoxic during the summer, the interactive effects of hypoxia and xenobiotic exposure on marine species such as teleost fishes remain poorly understood. The expression and activity of monooxygenase enzyme cytochrome P450-1A (CYP1A) in fishes are upregulated by exposure to polychlorinated biphenyls (PCBs), whereas they are down-regulated during hypoxia exposure. We investigated the interactive effects of hypoxia and PCB co-exposure on hepatic CYP1A expression in Atlantic croaker and on potential regulators of CYP1A...
January 8, 2018: Environmental Toxicology
https://www.readbyqxmd.com/read/29315583/the-effect-of-cooking-temperatures-on-the-aggregation-and-digestion-rate-of-myofibrillar-proteins-in-jinhua-ham
#9
Chang-Yu Zhou, Dao-Dong Pan, Yang-Ying Sun, Chun-Bao Li, Xing-Lian Xu, Jin-Xuan Cao, Guang-Hong Zhou
BACKGROUND: In order to evaluate the effect of cooking temperatures on the nutrition quality of dry-cured hams, 60 biceps femoris samples from 16 Jinhua hams were divided into four groups (the control, 70, 100 and 120 °C) and cooked for 30 min. Carbonyls content, sulfhydryl groups, surface hydrophobicity, microstructure, proteins aggregation and digestibility of myofibrillar proteins were investigated. RESULTS: Cooking promoted the carbonylation and decreased sulfhydryl groups in temperatures-dependent ways...
January 9, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29313151/cnidarian-primary-cell-culture-as-a-tool-to-investigate-the-effect-of-thermal-stress-at-cellular-level
#10
P Ventura, G Toullec, C Fricano, L Chapron, V Meunier, E Röttinger, P Furla, S Barnay-Verdier
In the context of global change, symbiotic cnidarians are largely affected by seawater temperature elevation leading to symbiosis breakdown. This process, also called bleaching, is triggered by the dysfunction of the symbiont photosystems causing an oxidative stress and cell death to both symbiont and host cells. In our study, we wanted to elucidate the intrinsic capacity of isolated animal cells to deal with thermal stress in the absence of symbiont. In that aim, we have characterized an animal primary cell culture form regenerating tentacles of the temperate sea anemone Anemonia viridis...
January 8, 2018: Marine Biotechnology
https://www.readbyqxmd.com/read/29310731/formula-derived-maillard-reaction-products-in-post-weaning-intrauterine-growth-restricted-piglets-induce-developmental-programming-of-hepatic-oxidative-stress-independently-of-microrna-21-and-microrna-155
#11
S Firmin, G Elmhiri, D Crepin, M Souidi, M Taouis, L Abdennebi-Najar
We recently reported augmentation of lipid peroxidation products in the liver of intrauterine growth-restricted (IUGR) piglets fed a high load of Maillard reaction products (MRPs) during suckling period. The underlying mechanisms of MRPs effects remain unknown. Here, we studied the long-term impact of MRPs exposure on liver oxidative status of IUGR juvenile pigs. Livers of 54-day-old pigs suckled with formula containing either a high (HHF, n=8) or a low (LHF: n=8) load of MRPs were analyzed for protein carbonylation levels , activities and messenger RNA (mRNA) expression of glutathione (GSH) and main antioxidant regulators of redox homeostasis [Superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) were measured...
January 9, 2018: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/29310645/effects-of-6-month-treatment-with-the-glucagon-like-peptide-1-analogue-liraglutide-on-arterial-stiffness-left-ventricular-myocardial-deformation-and-oxidative-stress-in-subjects-with-newly-diagnosed-type-2-diabetes
#12
Vaia Lambadiari, George Pavlidis, Foteini Kousathana, Maria Varoudi, Dimitrios Vlastos, Eirini Maratou, Dimitrios Georgiou, Ioanna Andreadou, John Parissis, Helen Triantafyllidi, John Lekakis, Efstathios Iliodromitis, George Dimitriadis, Ignatios Ikonomidis
BACKGROUND: Incretin-based therapies are used in the treatment of type 2 diabetes mellitus (T2DM) and obesity. We investigated the changes in arterial stiffness and left ventricular (LV) myocardial deformation after 6-month treatment with the GLP-1 analogue liraglutide in subjects with newly diagnosed T2DM. METHODS: We randomized 60 patients with newly diagnosed and treatment-naive T2DM to receive either liraglutide (n = 30) or metformin (n = 30) for 6 months...
January 8, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29306348/effect-of-different-dietary-energy-and-protein-sources-on-antioxidant-status-fresh-yolk-fatty-acid-profile-and-microstructure-of-salted-yolks-in-laying-ducks
#13
D Ruan, Y J Hu, A M Fouad, C X Lin, Z P Xu, W Chen, Q L Fan, W G Xia, S Wang, Y Wang, L Yang, C T Zheng
The study investigated whether different dietary energy and protein sources affect laying performance, antioxidant status, fresh yolk fatty acid profile and quality of salted yolks in laying ducks. In all, 360 19-week-old Longyan ducks were randomly assigned to four diets in a factorial arrangement (2×2). The four diets consisted of two energy sources, corn (CO) or sorghum (SO) and two protein sources, soybean meal (SM) and rapeseed meal with corn distillers dried grains with solubles (RMD), and each treatment contained six replicates of 15 birds each...
January 8, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29305990/effect-of-yeast-xanthophyllomyces-dendrorhous-and-plant-saint-john-s-wort-lemon-balm-and-rosemary-extract-based-functional-diets-on-antioxidant-and-immune-status-of-atlantic-salmon-salmo-salar-subjected-to-crowding-stress
#14
Sebastián Reyes-Cerpa, Eva Vallejos-Vidal, María José Gonzalez-Bown, Jonathan Morales-Reyes, Diego Pérez-Stuardo, Deborah Vargas, Mónica Imarai, Víctor Cifuentes, Eugenio Spencer, Ana María Sandino, Felipe E Reyes-López
Salmon farming may face stress due to the intensive culture conditions with negative impacts on overall performance. In this aspect, functional feed improves not only the basic nutritional requirements but also the health status and fish growth. However, to date no studies have been carried out to evaluate the effect of functional diets in salmon subjected to crowding stress. Thus, the aim of this study was to evaluate the effect of yeast (Xanthophyllomyces dendrorhous; diet A) and the combination of plant extracts (common Saint John's wort, lemon balm, and rosemary; diet B) on the antioxidant and immune status of Atlantic salmon grown under normal cultured conditions and then subjected to crowding stress...
January 3, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29304482/destabilization-of-ros-metabolism-in-tomato-roots-as-a-phytotoxic-effect-of-meta-tyrosine
#15
Olga Andrzejczak, Urszula Krasuska, Joanna Olechowicz, Paweł Staszek, Katarzyna Ciacka, Renata Bogatek, Kim Hebelstrup, Agnieszka Gniazdowska
meta-Tyrosine (m-Tyr) is a non-protein amino acid produced in both plants and animals. Primary mode of action of this phenylalanine analog is its incorporation into protein structure leading to formation of aberrant molecules. An increased level of m-Tyr in animal cells is detected under oxidative stress and during age-related processes characterized by overproduction of reactive oxygen species (ROS). The aim of this study was to link m-Tyr physiological action to disturbances in ROS metabolism in tomato (Solanum lycopersicum L...
December 14, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29301071/attenuation-of-west-nile-virus-ns2b-ns3-protease-by-amino-terminal-copper-and-nickel-bind-ing-atcun-peptides
#16
Andrew M Pinkham, Zhen Yu, James A Cowan
West Nile Virus NS2B/NS3 protease (WNVP) is a viable target for the development of antiviral com-pounds. To that end, catalytic metallopeptides that incorporate the copper-binding ATCUN motif into either the N- or C-terminus of known WNVP targeting peptides have been developed as new families of peptide-based inhibitors. Each metallopeptide was evaluated based on its inhibitory constant (KI), time-dependent inactivation of the protein, Michaelis-Menten parameters, and the ability to oxidatively modi-fy WNVP...
January 4, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29299636/skeletal-muscle-insulin-resistance-is-induced-by-4-hydroxy-2-hexenal-a-by-product-of-n-3-fatty-acid-peroxidation
#17
Christophe O Soulage, Laura Sardón Puig, Laurent Soulère, Bader Zarrouki, Michel Guichardant, Michel Lagarde, Nicolas J Pillon
AIMS/HYPOTHESIS: Oxidative stress is involved in the pathophysiology of insulin resistance and its progression towards type 2 diabetes. The peroxidation of n-3 polyunsaturated fatty acids produces 4-hydroxy-2-hexenal (4-HHE), a lipid aldehyde with potent electrophilic properties able to interfere with many pathophysiological processes. The aim of the present study was to investigate the role of 4-HHE in the development of insulin resistance. METHODS: 4-HHE concentration was measured in plasma from humans and rats by GC-MS...
January 3, 2018: Diabetologia
https://www.readbyqxmd.com/read/29295647/prophylactic-riluzole-attenuates-oxidative-stress-damage-in-spinal-cord-distraction
#18
Eileen Nicole Shimizu, Jennifer L Seifert, Kevin J Johnson, Mario Romero-Ortega
Spinal cord injury (SCI) without radiographic abnormalities (SCIWORA) presents a significant challenge due the loss of function despite an apparent normal anatomy. The cause of dysfunction is not understood and specific treatment options are lacking. Some scoliosis corrective surgeries result in SCIWORA, where stretching of the spinal cord can lead to vascular compromise and hypoxia. This procedure allows for the implantation of neuroprotective strategies designed to prevent iatrogenic SCI. We utilized a model of atraumatic SCI to evaluate the efficacy of the sodium channel blocker Riluzole, as a prophylactic neuroprotectant...
January 2, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29294535/-effect-of-silica-dust-on-protein-oxidative-injury-in-lung-tissue-of-mice
#19
Z Q Zhang, Y Q Cai, L Lin, L H Zhang, C Z Zhang
Objective: To investigate the effect of silica dust on protein oxidative injury in the lung tissue of mice. Methods: A total of 60 mice were randomly divided into control group (not exposed to dust) , 2-hour group (inhalation of dust for 2 hours per day) , 4-hour group (inhalation of dust for 4 hours per day) , and 8-hour group (inhalation of dust for 8 hours per day) , with 15 mice in each group. During dust exposure, the mice were placed in a dust exposure cabinet; the dust was blown with an air blower and the concentration was maintained at 125 mg/m(3)...
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29294513/-mono-carbonyl-analogues-of-curcumin-prevents-paraquat-induced-apoptosis-in-hk-2-cell-line-by-inhibiting-oxidative-damage-and-inflammation
#20
G L Hong, Z N Yang, Y Y He, J P Tan, A Liangm, G J Zhao, Z Q Lu
Objective: To investigate the effects of mono-carbonyl analogues of curcumin (L6H21) on paraquat (PQ) -induced injury in HK-2 cell line and explore its underlying mechanisms. Methods: Cultured HK-2 cells were challenged by PQ with or without L6H21 treatment. Cell viability and apoptosis were determined by CCK-8 assay and flow cytometry, respectively. Gene expressions and protein levels of apoptotic and inflammatory factors were assessed by RT-PCR, ELISA, and western blot. Intracellular ROS production was detected by DCFH-DA staining...
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
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