Abstract:
:Molecular level, mechanistic understanding of the roles of reactive oxygen species (ROS) in a variety of pathological conditions is hindered by the difficulties associated with determining the concentration of various ROS species. Here, we present an approach that converts fold-change in the signal from an intracellular sensor of hydrogen peroxide into changes in absolute concentration. The method uses extracellular additions of peroxide and an improved biochemical measurement of the gradient between extracellular and intracellular peroxide concentrations to calibrate the intracellular sensor. By measuring peroxiredoxin activity, we found that this gradient is 650-fold rather than the 7-10-fold that is widely cited. The resulting calibration is important for understanding the mass-action kinetics of complex networks of redox reactions, and it enables meaningful characterization and comparison of outputs from endogenous peroxide generating tools and therapeutics across studies.
journal_name
Redox Bioljournal_title
Redox biologyauthors
Huang BK,Sikes HDdoi
10.1016/j.redox.2014.08.001subject
Has Abstractpub_date
2014-01-01 00:00:00pages
955-62issn
2213-2317pii
S2213-2317(14)00091-3journal_volume
2pub_type
杂志文章相关文献
Redox Biology文献大全abstract:AIMS:Hyperoxic breathing might lead to redox imbalance and signaling changes that affect cerebral function. Paradoxically, hypoxic breathing is also believed to cause oxidative stress. Our aim is to dissect the cerebral tissue responses to altered O2 fractions in breathed air by assessing the redox imbalance and the re...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2016.10.018
更新日期:2017-04-01 00:00:00
abstract::Glutathione peroxidase 2 (GPx2) is one of the five selenoprotein GPxs having a selenocysteine in the active center. GPx2 is strongly expressed in the gastrointestinal epithelium, as is another isoform, GPx1, though with a different localization pattern. Both GPxs are redox-active enzymes that are important for the red...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2019.101388
更新日期:2020-01-01 00:00:00
abstract::Superoxide dismutase (SOD) is known to be protective against oxidative stress-mediated skin dysfunction. Here we explore the potential therapeutic activities of RM191A, a novel SOD mimetic, on skin. RM191A is a water-soluble dimeric copper (Cu2+-Cu3+)-centred polyglycine coordination complex. It displays 10-fold highe...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101790
更新日期:2021-01-01 00:00:00
abstract::Vascular peroxidase 1 (VPO1) is a member of the peroxidase family which aggravates oxidative stress by producing hypochlorous acid (HOCl). Our previous study demonstrated that VPO1 plays a critical role in endothelial dysfunction through dimethylarginine dimethylaminohydrolase2 (DDAH2)/asymmetric Dimethylarginine (ADM...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2017.02.022
更新日期:2017-08-01 00:00:00
abstract::Dietary nitrate is now recognized as an alternative substrate for nitric oxide (•NO) production in the gut. This novel pathway implies the sequential reduction of nitrate to nitrite, •NO and other bioactive nitrogen oxides but the physiological relevance of these oxidants has remained elusive. We have previously shown...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2016.04.002
更新日期:2016-08-01 00:00:00
abstract::Necroptosis has been discovered as a new paradigm of cell death and may play a key role in heart disease and selenium (Se) deficiency. Hence, we detected the specific microRNA (miRNA) in response to Se-deficient heart using microRNAome analysis. For high-throughput sequencing using Se-deficient chicken cardiac tissue,...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2017.11.025
更新日期:2018-05-01 00:00:00
abstract::The notion that oxidative stress plays a role in virtually every human disease and environmental exposure has become ingrained in everyday knowledge. However, mounting evidence regarding the lack of specificity of biomarkers traditionally used as indicators of oxidative stress in human disease and exposures now necess...
journal_title:Redox biology
pub_type: 杂志文章,meta分析
doi:10.1016/j.redox.2017.03.024
更新日期:2017-08-01 00:00:00
abstract::Ganoderma lucidum has high commercial value because it produces many active compounds, such as ganoderic acids (GAs). Salicylic acid (SA) was previously reported to induce the biosynthesis of GA in G. lucidum. In this study, we found that SA induces GA biosynthesis by increasing ROS production, and further research fo...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2018.03.018
更新日期:2018-06-01 00:00:00
abstract:BACKGROUND:Many neuroprotective approaches targeting neurons in animal models fail to provide benefits for the treatment of ischemic stroke in clinic and glial cells have become the targets in some basic studies. Baicalin has neuroprotective effects but the mechanisms related to glial cells are not revealed. This study...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101559
更新日期:2020-07-01 00:00:00
abstract::Oxidative stress and neuronal apoptosis have been demonstrated to be key features in early brain injury (EBI) after subarachnoid hemorrhage (SAH). Previous studies have indicated that Mas receptor activation initiates an anti-oxidative and anti-apoptotic role in the brain. However, whether Mas activation can attenuate...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2018.09.022
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:The oxidation of the methionine adenosyltransferase (MAT) by the combined impact of peroxides contaminating parenteral nutrition (PN) and oxidized redox potential of glutathione is suspected to explain its inhibition observed in animals. A modification of MAT activity is suspected to be at origin of the PN-a...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2015.12.003
更新日期:2016-08-01 00:00:00
abstract::The massive production and activation of myofibroblasts (MFB) is key to the development of liver fibrosis. In many studies, it has been proven that hepatocytes are an important part of MFB, and can be transformed into MFB through epithelial-mesenchymal transition (EMT) during hepatic fibrogenesis. In our previous stud...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101600
更新日期:2020-09-01 00:00:00
abstract::The development of hypertension is associated with mitochondrial redox balance disruptions. NADP+-dependent isocitrate dehydrogenase 2 (IDH2) plays an important role in the maintenance of mitochondrial redox balance by producing mitochondrial NADPH, which is an essential cofactor in the reduction of glutathione (from ...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101548
更新日期:2020-07-01 00:00:00
abstract::Keloids exhibit metabolic reprogramming including enhanced glycolysis and attenuated oxidative phosphorylation. Hypoxia induces a series of protective responses in mammalian cells. However, the metabolic phenotype of keloid fibroblasts under hypoxic conditions remains to be elucidated. The present study aimed to inves...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101815
更新日期:2021-01-01 00:00:00
abstract::Injury-induced stenosis is a serious vascular complication. We previously reported that p38α (MAPK14), a redox-regulated p38MAPK family member was a negative regulator of the VSMC contractile phenotype in vitro. Here we evaluated the function of VSMC-MAPK14 in vivo in injury-induced neointima hyperplasia and the under...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2019.101137
更新日期:2019-04-01 00:00:00
abstract::Redox signaling and oxidative stress are associated with tissue fibrosis and aging. Aging is recognized as a major risk factor for fibrotic diseases involving multiple organ systems, including that of the lung. A number of oxidant generating enzymes are upregulated while antioxidant defenses are deficient with aging a...
journal_title:Redox biology
pub_type: 杂志文章,评审
doi:10.1016/j.redox.2016.06.005
更新日期:2016-10-01 00:00:00
abstract::Free radicals originate from both exogenous environmental sources and as by-products of the respiratory chain and cellular oxygen metabolism. Sustained accumulation of free radicals, beyond a physiological level, induces oxidative stress that is harmful for the cellular homeodynamics as it promotes the oxidative damag...
journal_title:Redox biology
pub_type: 杂志文章,评审
doi:10.1016/j.redox.2014.01.017
更新日期:2014-01-30 00:00:00
abstract::Red blood cells (RBC) have been considered almost exclusively as a transporter of metabolic gases and nutrients for the tissues. It is an accepted dogma that RBCs take up and inactivate endothelium-derived NO via rapid reaction with oxyhemoglobin to form methemoglobin and nitrate, thereby limiting NO available for vas...
journal_title:Redox biology
pub_type: 杂志文章,评审
doi:10.1016/j.redox.2013.12.027
更新日期:2014-01-09 00:00:00
abstract::Vascular aging is associated with structural and functional modifications of the arteries, and by an increase in arterial wall thickening in the intima and the media, mainly resulting from structural modifications of the extracellular matrix (ECM) components. Among the factors known to accumulate with aging, advanced ...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2014.12.008
更新日期:2015-01-01 00:00:00
abstract::Chronic alcoholism disrupts mitochondrial function and often results in alcoholic cardiomyopathy (ACM). Fas-activated serine/threonine kinase (FASTK) is newly recognized as a key post-transcriptional regulator of mitochondrial gene expression. However, the modulatory role of FASTK in cardiovascular pathophysiology rem...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101778
更新日期:2021-01-01 00:00:00
abstract::Hydrogen sulfide (H2S) is a gaseous signalling molecule involved in many physiological and pathological processes. There is increasing evidence that H2S is implicated in aging and lifespan control in the diet-induced longevity models. However, blood sulfide concentration of naturally long-lived species is not known. H...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2016.01.008
更新日期:2016-08-01 00:00:00
abstract::Hydrogen peroxide (H2O2) is an essential second intracellular messenger. To reach its targets in the cytosol, H2O2 must cross a membrane, a feat that requires aquaporins (AQP) endowed with 'peroxiporin' activity (AQP3, AQP8, AQP9). Here, we exploit different organelle-targeted H2O2-sensitive probes to show that also A...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2019.101326
更新日期:2020-01-01 00:00:00
abstract::Oxidative stress has a critical role in the pathogenesis of Age-related Macular Degeneration (AMD), a multifactorial disease that includes age, gene variants of complement regulatory proteins and smoking as the main risk factors. Stress-induced premature cellular senescence (SIPS) is postulated to contribute to this c...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2015.11.011
更新日期:2016-04-01 00:00:00
abstract::The generation of excessive amounts of reactive oxygen species (ROS) leads to cellular oxidative stress that underlies a variety of forms of hepatocyte injury and death including that from alcohol. Although ROS can induce cell damage through direct effects on cellular macromolecules, the injurious effects of ROS are m...
journal_title:Redox biology
pub_type: 杂志文章,评审
doi:10.1016/j.redox.2014.09.004
更新日期:2014-01-01 00:00:00
abstract::Ultraviolet light is the dominant environmental oxidative skin stressor and a major skin aging factor. We studied which oxidized phospholipid (OxPL) mediators would be generated in primary human keratinocytes (KC) upon exposure to ultraviolet A light (UVA) and investigated the contribution of OxPL to UVA responses. Ma...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2018.11.006
更新日期:2019-01-01 00:00:00
abstract::Microglia-mediated neuroinflammation plays a crucial role in the pathophysiological process of multiple neurological disorders such as ischemic stroke, yet lacks effective therapeutic agents. Previously, we discovered one novel synthetic compound, tanshinol borneol ester (DBZ), possesses anti-inflammatory and anti-ath...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101644
更新日期:2020-09-01 00:00:00
abstract::With the goal to enhance the distribution of cationic Mn porphyrins within mitochondria, the lipophilic Mn(III)meso-tetrakis(N-n-hexylpyridinium-2-yl)porphyrin, MnTnHex-2-PyP(5+) has been synthesized and tested in several different model of diseases, where it shows remarkable efficacy at as low as 50 µg/kg single or m...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2013.12.017
更新日期:2014-01-09 00:00:00
abstract::Of the various transcription factors that play a role in controlling oxidative stress, the role of FoxO proteins in skin aging has recently become of interest. Unlike other FoxOs, FoxO6 remains in the nucleus due to the lack of nuclear export signal, so that it may respond sensitively to intracellular stimuli for the ...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2020.101624
更新日期:2020-09-01 00:00:00
abstract::Products of ultraviolet (UV) irradiation such as reactive oxygen species (ROS) and nitric oxide (NO) stimulate melanin synthesis. Reactive sulfur species (RSS) have been shown to have strong ROS and NO scavenging effects. However, the instability and low retention of RSS limit their use as inhibitors of melanin synthe...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2017.10.007
更新日期:2018-04-01 00:00:00
abstract::Increased permeability of the intestinal barrier is proposed as an underlying factor for obesity-associated pathologies. Consumption of high fat diets (HFD) is associated with increased intestinal permeabilization and increased paracellular transport of endotoxins which can promote steatosis and insulin resistance. Th...
journal_title:Redox biology
pub_type: 杂志文章
doi:10.1016/j.redox.2017.11.002
更新日期:2018-04-01 00:00:00