Abstract:
:Integrin-mediated phagocytosis in fibroblasts is associated to collagenase 1 induction when the particles are coated with high-affinity binding ligands. This study shows that the high density of ligand coating on the particle elicits RhoA-dependent particle uptake coupled to signal transduction. Integrin clustering induced by anti-integrin antibodies or cell surface-binding lectins is sufficient to trigger the pathway. The GTPase RhoA is recruited in response to integrin aggregation at the plasma membrane when uptake is inhibited at 4 degrees C and is necessary for particle engulfment, as function interference with the dominant negative mutant RhoAN19, but not with RacN17, abrogates particle ingestion. Phagocytosis driven by clustering is associated with signal transduction through a transient rise in cellular hydrogen peroxide production to induce a proinflammatory cascade leading to collagenase 1 induction.
journal_name
Antioxid Redox Signaljournal_title
Antioxidants & redox signalingauthors
Werner Edoi
10.1089/ars.2005.7.318keywords:
subject
Has Abstractpub_date
2005-03-01 00:00:00pages
318-26issue
3-4eissn
1523-0864issn
1557-7716journal_volume
7pub_type
杂志文章abstract::Molecular chaperones play key roles in protein quality control, signal transduction, proliferation, and cell death, and confer cytoprotection and assure survival after environmental stress. The heat-shock response is implicated in a variety of conditions including ischemic diseases, infection and immunity, neurodegene...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2007.1866
更新日期:2008-01-01 00:00:00
abstract::The 6(th) COSTAM/SFRR (ASEAN/Malaysia) workshop, "Micronutrients, Oxidative Stress, and the Environment," was held from June 29 to July 2 at Holiday Inn Damai Beach Resort in Kuching, Sarawak. Two hundred twenty participants from 17 countries presented recent advances on natural antioxidants in the area of oxidative s...
journal_title:Antioxidants & redox signaling
pub_type:
doi:10.1089/ars.2006.8.2175
更新日期:2006-11-01 00:00:00
abstract::Cerebral amyloid angiopathy (CAA) is frequently observed in Alzheimer's disease (AD) and is characterized by deposition of amyloid beta (Aβ) in leptomeningeal and cortical brain vasculature. In 40% of AD cases, Aβ mainly accumulates in cortical capillaries, a phenomenon referred to as capillary CAA (capCAA). The aim o...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2011.3895
更新日期:2011-09-01 00:00:00
abstract::Cellular redox balance is vital in health and disease. In this Forum, we highlight the importance of reactive oxygen species (ROS) in the regulation of redox balance in different organ systems of the body and ROS contribution to the development of hypertension. The Forum examines interactions between oxidative and nit...
journal_title:Antioxidants & redox signaling
pub_type: 社论
doi:10.1089/ars.2013.5591
更新日期:2014-01-01 00:00:00
abstract::Intracellular Ca(2+) signaling, and related mechanisms involving inositol 1,4,5-trisphosphate (IP(3)), nitric oxide, and the excitatory neurotransmitter glutamate, play a major role in the regulation of cellular function in the brain. Due to the complex morphology of central neurons, the correct spatiotemporal distrib...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2010.3367
更新日期:2011-04-01 00:00:00
abstract::Heme oxygenase (HO)-1, involved in the heme degradation process, is an important antioxidant enzyme. The induction of HO-1 gene expression, in response to diverse oxidative stimuli, represents a critical event in adaptive cellular response. Experimental models of various diseases, including acute inflammation, atheros...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2005.7.1688
更新日期:2005-11-01 00:00:00
abstract::Through hypoxia-inducible factor 1 (HIF-1), hypoxia regulates the expression of numerous genes and is a potent inducer of angiogenesis. However, interleukin-8 (IL-8), an important angiogenic mediator, has been reported to be downregulated by HIF-1, although the mechanisms have not been elucidated. HIF-1 was induced in...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2008.2211
更新日期:2009-07-01 00:00:00
abstract:SIGNIFICANCE:Understanding isoform- and context-specific subcellular Nox reduced nicotinamide adenine dinucleotide phosphate (NADPH) oxidase compartmentalization allows relevant functional inferences. This review addresses the interplay between Nox NADPH oxidases and the endoplasmic reticulum (ER), an increasingly evid...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2013.5605
更新日期:2014-06-10 00:00:00
abstract::Eukaryotic mitochondria resulted from symbiotic incorporation of α-proteobacteria into ancient archaea species. During evolution, mitochondria lost most of the prokaryotic bacterial genes and only conserved a small fraction including those encoding 13 proteins of the respiratory chain. In this process, many functions ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2011.4085
更新日期:2012-05-15 00:00:00
abstract::The signaling for activation of protein tyrosine kinases (PTKs) is usually started by binding of ligands to cell-surface receptors. However, recent evidence suggests the presence of ligand binding-independent signaling pathways that are mediated by oxidative stress. Oxidation and reduction of protein cysteine sulfhydr...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/15230860260196326
更新日期:2002-06-01 00:00:00
abstract:SIGNIFICANCE:Mitochondrial function is central to a wide range of biological processes in health and disease and there is considerable interest in developing small molecules that are taken up by mitochondria and act as either probes of mitochondrial function or therapeutics in vivo. RECENT ADVANCES:Various strategies ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2011.3969
更新日期:2011-12-15 00:00:00
abstract:SIGNIFICANCE:There are accruing concerns on potential genotoxic agents present in the environment including low-dose ionizing radiation (LDIR) that naturally exists on earth's surface and atmosphere and is frequently used in medical diagnosis and nuclear industry. Although its long-term health risk is being evaluated a...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2013.5684
更新日期:2014-03-20 00:00:00
abstract::Increased oxidative stress and impaired heat shock protein (HSP) synthesis may contribute to diabetic nephropathy. The question of whether 8-week thiol antioxidant alpha-lipoic acid (LA) supplementation modulates HSP response and oxidative stress was studied in the kidney of streptozotocin-induced diabetic (SID) and n...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2006.1450
更新日期:2007-04-01 00:00:00
abstract::The cellular redox state is associated with major cellular processes including differentiation, transformation, and apoptosis. Glutaredoxin 2 (Grx2) is a mitochondrial oxidoreductase suggested to play a critical role in protection against apoptotic stimuli. An alternative Grx2 transcript variant encoding a nonmitochon...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2007.1821
更新日期:2008-03-01 00:00:00
abstract:SIGNIFICANCE:Many cardiovascular disorders are accompanied by a deregulated cellular redox balance resulting in elevated levels of intracellular reactive oxygen species (ROS). One major antioxidative cellular molecule is thioredoxin-1 (Trx-1). Its indispensability is demonstrated by the embryonic lethality of Trx-1 def...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2012.4822
更新日期:2013-03-20 00:00:00
abstract::Thiol peroxidases comprise glutathione peroxidases (GPx) and peroxiredoxins (Prx). The enzymes of both families reduce hydroperoxides with thiols by enzyme-substitution mechanisms. H(2)O(2) and organic hydroperoxides are reduced by all thiol peroxidases, most efficiently by SecGPxs, whereas fast peroxynitrite reductio...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2010.3397
更新日期:2011-08-01 00:00:00
abstract::Intestinal detection of nutrients is a crucial step to inform the whole body of the nutritional status. In this paradigm, peripheral information generated by nutrients is transferred to the brain, which in turn controls physiological functions, including glucose metabolism. Here, we investigated the effect of enteric ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2010.3330
更新日期:2011-02-01 00:00:00
abstract::Neurons are extremely active cells and metabolize up to 20% of the oxygen that was consumed by the organism. Despite their highly oxygenic metabolism, neuronal cells have a lower capacity to neutralize the reactive oxygen species (ROS) that they generate or to which they are exposed. High levels of ROS can lead to acc...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2007.9.211
更新日期:2007-02-01 00:00:00
abstract::Zinc/cysteine coordination environments in proteins are redox-active. Oxidation of the sulfur ligands mobilizes zinc, while reduction of the oxidized ligands enhances zinc binding, providing redox control over the availability of zinc ions. Some zinc proteins are redox sensors, in which zinc release is coupled to conf...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2006.8.1419
更新日期:2006-09-01 00:00:00
abstract:SIGNIFICANCE:Oxidative stress and damage are well-established components of neurodegenerative diseases, contributing to neuronal death during disease progression. Here, we consider key K(+) channels as target proteins that can undergo oxidative modulation, describe what is understood about how this influences disease p...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2014.6007
更新日期:2015-02-20 00:00:00
abstract::Homeostasis within the central nervous system (CNS) is a prerequisite to elicit proper neuronal function. The CNS is tightly sealed from the changeable milieu of the blood stream by the blood-brain barrier (BBB) and the blood-cerebrospinal fluid (CSF) barrier (BCSFB). Whereas the BBB is established by specialized endo...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2011.3929
更新日期:2011-09-01 00:00:00
abstract::Previous studies identified NADPH oxidases (Nox) and mitochondrial electron transport chain at complex I as major cellular sources of reactive oxygen species (ROS) mediating systemic and cellular responses to intermittent hypoxia (IH). In the present study, we investigated potential interactions between Nox and the mi...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2010.3213
更新日期:2011-02-15 00:00:00
abstract::Hyperglycemia-induced overproduction of superoxide by mitochondrial electron-transport chain triggers several pathways of injury involved in the pathogenesis of diabetic complications [protein kinase C (PKC), hexosamine and polyol pathway fluxes, advanced glycation end product (AGE) formation] by inhibiting glyceralde...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2005.7.1568
更新日期:2005-11-01 00:00:00
abstract:AIMS:Macrophages are of key importance for tissue repair after myocardial infarction (MI). Hydrogen sulfide (H2S) has been shown to exert cardioprotective effects in MI. However, the mechanisms by which H2S modulates cardiac remodeling and repair post-MI remain to be clarified. RESULTS:In our current study, we showed ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2015.6577
更新日期:2016-08-10 00:00:00
abstract::We studied the subcellular distribution of mitochondria and superoxide dismutase-1 (SOD1) in whole mounts of microdissected motor axons of rats expressing the ALS-linked SOD1-G93A mutation. The rationale was to determine whether physical interactions between the enzyme and mitochondria were linked to the axonopathy of...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2009.2614
更新日期:2009-07-01 00:00:00
abstract:SIGNIFICANCE:Glutathione is the most abundant antioxidant molecule in living organisms and has multiple functions. Intracellular glutathione homeostasis, through its synthesis, consumption, and degradation, is an intricately balanced process. Glutathione levels are often high in tumor cells before treatment, and there ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2017.7134
更新日期:2017-11-20 00:00:00
abstract::Tetrahydrobiopterin (BH4) functions as a cofactor for several important enzyme systems, and considerable evidence implicates BH4 as a key regulator of endothelial nitric oxide synthase (eNOS) in the setting of cardiovascular health and disease. BH4 bioavailability is determined by a balance of enzymatic de novo synthe...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2013.5566
更新日期:2014-06-20 00:00:00
abstract::Selenium (Se) is an essential trace element in mammals that has been shown to exert its function through selenoproteins. Whereas optimal levels of Se in the diet have important health benefits, a recent clinical trial has suggested that supplemental intake of Se above the adequate level potentially may raise the risk ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2010.3526
更新日期:2011-06-15 00:00:00
abstract:: Significance: Mitochondria undergo constant morphological changes through fusion, fission, and mitophagy. As the key organelle in cells, mitochondria are responsible for numerous essential cellular functions such as metabolism, regulation of calcium (Ca2+), generation of r...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2019.7898
更新日期:2020-02-10 00:00:00
abstract:: Aims: Severe acute pancreatitis (AP) is a serious condition without specific treatment. Mitochondrial dysfunction plays a crucial role in the pathogenesis of AP. Irisin, a novel exercise-induced hormone, contributes to many health benefits of physical activity. We and othe...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2019.7731
更新日期:2019-10-10 00:00:00