Abstract:
:Although much is known about how TNF-alpha induces apoptosis in the presence of inhibitors of protein synthesis, little is known about how it induces apoptosis without these inhibitors. In this report we investigated temporal sequence of events induced by TNF-alpha in the absence of protein synthesis. Regardless of whether we measured the effects by plasma membrane phosphotidylserine accumulation, by DNA strand breaks, or activation of caspases, significant changes were observed only between 12-24 h of TNF-alpha treatment. One of the earliest changes observed after TNF-alpha treatment was mitochondrial swelling at 10 min; followed by cytochrome c and Smac release at 10-30 min, and then heterochromatin clumping occurred at 60 min. While genetic deletion of receptor-interaction protein (RIP) had no effect on TNF-alpha-induced mitochondrial damage, deletion of Fas-associated death domain (FADD) abolished the TNF-induced mitochondrial swelling. Since pan-caspase inhibitor z-VAD-fmk abolished the TNF-alpha-induced mitochondrial changes, z-DEVD-fmk, an inhibitor of caspase-3 had no effect, suggesting that TNF-alpha-induced mitochondrial changes or cytochrome c and Smac release requires caspase-8 but not caspase-3 activation. Overall, our results indicated that mitochondrial changes are early events in TNF-alpha-induced apoptosis and that these mitochondrial changes require recruitment of FADD and caspase-8 activation, but not caspase-3 activation or RIP recruitment.
journal_name
Antioxid Redox Signaljournal_title
Antioxidants & redox signalingauthors
Shakibaei M,Sung B,Sethi G,Aggarwal BBdoi
10.1089/ars.2009.3036subject
Has Abstractpub_date
2010-09-15 00:00:00pages
821-31issue
6eissn
1523-0864issn
1557-7716journal_volume
13pub_type
杂志文章abstract:SIGNIFICANCE:The accepted effects of aging in mammalian skeletal muscle are progressive atrophy and weakening, or sarcopenia. Canonical hallmarks of aging in skeletal muscle include a reduction in muscle fiber cross-sectional area, a loss in muscle fibers through apoptosis and denervation, and infiltration of connectiv...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2011.3974
更新日期:2011-11-01 00:00:00
abstract:INTRODUCTION:Glycating stress can occur together with oxidative stress during neurodegeneration and contribute to the pathogenic mechanism. Nerve growth factor (NGF) accumulates in several neurodegenerative diseases. Besides promoting survival, NGF can paradoxically induce cell death by signaling through the p75 neurot...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2016.6966
更新日期:2018-06-20 00:00:00
abstract::The mitogen-activated protein kinases (MAPKs) play a central role in mediating the activation and transcriptional responses of diverse cells, including glia. c-Jun N-terminal kinase (JNK), a member of the MAPK family, is activated by a variety of stress and proinflammatory signals and in turn phosphorylates its downst...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2006.8.903
更新日期:2006-05-01 00:00:00
abstract::The possibility of a plasma oxygen diffusion barrier implies a significant resistance to oxygen diffusion and the existence of capillary erythrocyte-associated transients of oxygen. This effect was analyzed by measuring intracapillary blood and tissue pO(2) in the hamster chamber window model using a noninvasive intra...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2007.1584
更新日期:2007-07-01 00:00:00
abstract::Coenzyme Q10 (CoQ) has long been utilized as a cardioprotective agent in various heart diseases. One of the most important mechanisms by which CoQ exerts cardioprotection is aerobic ATP production as a mobile electron carrier in the mitochondrial electron transfer chain. The ability of CoQ to afford myocardial protect...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/152308601750100588
更新日期:2001-02-01 00:00:00
abstract:AIMS:Intracellular amyloid beta (Aβ) oligomers and extracellular Aβ plaques are key players in the progression of sporadic Alzheimer's disease (AD). Still, the molecular signals triggering Aβ production are largely unclear. We asked whether mitochondrion-derived reactive oxygen species (ROS) are sufficient to increase ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2011.4173
更新日期:2012-06-15 00:00:00
abstract::Ceramide has been shown by many studies to induce apoptosis. Therefore, upregulation of ceramide is discussed as a novel approach for tumor treatment. However, it is unknown whether overexpression of acid sphingomyelinase releasing ceramide from sphingomyelin sensitizes cells to chemotherapy and, thus, serves as a pot...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2007.1673
更新日期:2007-09-01 00:00:00
abstract:AIMS:Pulmonary infections with Pseudomonas aeruginosa are a serious clinical problem and are often lethal. Because many strains of P. aeruginosa are resistant to antibiotics, therapeutic options are limited. Neutrophils play an important role in the host's early acute defense against pulmonary P. aeruginosa. Therefore,...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2014.5979
更新日期:2015-05-01 00:00:00
abstract::Peroxiredoxins (Prxs) are a family of peroxidases that reduce peroxides, with a conserved cysteine residue (the peroxidatic Cys) serving as the site of oxidation by peroxides. Peroxides oxidize the peroxidatic Cys-SH to Cys-SOH, which then reacts with another cysteine residue (typically the resolving Cys [C(R)]) to fo...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2010.3393
更新日期:2011-08-01 00:00:00
abstract::The decision to remove or refold oxidized, denatured, or misfolded proteins by heat shock protein 70 and its binding partners is critical to determine cell fate under pathophysiological conditions. Overexpression of the ubiquitin ligase C-terminus of HSC70 interacting protein (CHIP) can compensate for failure of other...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2010.3300
更新日期:2011-05-15 00:00:00
abstract::Nox family NADPH oxidases serve a variety of functions requiring reactive oxygen species (ROS) generation, including antimicrobial defense, biosynthetic processes, oxygen sensing, and redox-based cellular signaling. We explored targeting, assembly, and activation of several Nox family oxidases, since ROS production ap...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2009.2637
更新日期:2009-10-01 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::Reactive oxygen species (ROS) generated within the vascular wall trigger low-density lipoprotein (LDL) oxidation, lipid peroxidation, and carbonyl stress that are involved in atherogenesis. We recently reported that the antihypertensive drug, hydralazine, exhibits carbonyl scavenger and antiatherogenic properties, but...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2010.3321
更新日期:2011-06-01 00:00:00
abstract::Tissue oxygen plays a crucial role in maintaining tissue viability and in various diseases, including responses to therapy. Useful knowledge has been gained by methods that can give limited snapshots of tissue oxygen (e.g., oxygen electrodes) or evidence of a history of tissue hypoxia (e.g., EF5) or even indirect evid...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2007.1635
更新日期:2007-08-01 00:00:00
abstract:SIGNIFICANCE:Insulin resistance and its related diseases, obesity and type 2 diabetes mellitus (T2DM), have been linked to changes in aerobic metabolism, pointing to a possible role of mitochondria in the development of insulin resistance. RECENT ADVANCES:Refined methodology of ex vivo high-resolution respirometry and...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2012.4910
更新日期:2013-07-20 00:00:00
abstract::Hypoxia induces the stress protein heme oxygenase-1 (HO-1), which participates in cellular adaptation. The molecular pathways that regulate ho-1 gene expression under hypoxia may involve mitogen activated protein kinase (MAPK) signaling and reactive oxygen. Hypoxia (8 h) increased HO-1 mRNA in rat pulmonary aortic end...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/15230860260220085
更新日期:2002-08-01 00:00:00
abstract::Hyperhomocysteinemia is an independent risk factor for cardiovascular disease, complications of pregnancy, cognitive impairment, and osteoporosis. That elevated homocysteine leads to vascular dysfunction may be the linking factor between these apparently unrelated pathologies. Although a growing body of evidence sugge...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2007.1809
更新日期:2007-11-01 00:00:00
abstract:AIMS:Peripheral artery disease is caused by the restriction or occlusion of arteries supplying the leg. Better understanding of the molecular mechanisms underpinning tissue response to ischemia is urgently needed to improve therapeutic options. The aim of this study is to investigate hypoxia-induced miR-210 regulation ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2013.5206
更新日期:2014-09-10 00:00:00
abstract::Huntington's disease (HD) is a devastating neurodegenerative disorder characterized by the progressive development of involuntary choreiform movements, cognitive impairment, neuropsychiatric symptoms, and premature death. These phenotypes reflect neuronal dysfunction and ultimately death in selected brain regions, the...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2006.8.2061
更新日期:2006-11-01 00:00:00
abstract::Cells oxidize molecules to generate energy and to make the materials to build and support the structures and functions needed for life. However, unwanted oxidations can damage these same structures and impair function. Lipids (the lipids in membranes and lipoproteins) are targets of unwanted oxidations. The primary me...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/152308604773934396
更新日期:2004-06-01 00:00:00
abstract::Protein-DNA interactions play a key role in the regulation of major cellular metabolic pathways, including gene expression, genome replication, and genomic stability. They are mediated through the interactions of regulatory proteins with their specific DNA-binding sites at promoters, enhancers, and replication origins...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2009.3029
更新日期:2010-11-01 00:00:00
abstract::Junctional adhesion molecules are transmembrane proteins that belong to the immunoglobulin superfamily. In addition to their localization in close proximity to the tight junctions in endothelial and epithelial cells, junctional adhesion molecules are also expressed in circulating cells that do not form junctions, such...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2010.3867
更新日期:2011-09-01 00:00:00
abstract::Carica papaya Linn is widely known as a medicinal fruit. We sought to study a standardized fermented papaya preparation (FPP) for its effects on wound healing in adult obese diabetic (db/db) mice. FPP blunted the gain in blood glucose and improved the lipid profile after 8 weeks of oral supplementation. However, FPP d...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2009.3039
更新日期:2010-09-01 00:00:00
abstract::Anthracyclines are widely used in anticancer protocols, but can induce cardiotoxicity by mechanisms that mainly involve oxidative damage and mitochondrial dysfunction. Radiotherapy (RT) can also impair cardiac function by promoting myocardial fibrosis, microvascular damage, and decreased density of myocardial capillar...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2019.7842
更新日期:2019-11-20 00:00:00
abstract::Previous reports have shown that the human immunodeficiency virus (HIV) regulatory protein Tat has both pro-oxidant and pro-inflammatory properties, suggesting that Tat might contribute to the neurological complications of HIV. However, the intracellular mechanisms whereby Tat triggers free radical production and infl...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2008.2097
更新日期:2009-02-01 00:00:00
abstract::Alteration in neurotrophic factors support and antioxidant defenses in the central nervous system (CNS) along with deficit of ferritin have been associated with idiopathic Parkinson's disease (PD). The objectives were to analyze in the cerebrospinal fluid (CSF) of patients with PD and controls the following: (i) the l...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2015.6423
更新日期:2015-10-10 00:00:00
abstract:AIMS:Here we report that chromatin, the complex and dynamic eukaryotic DNA packaging structure, is able to sense cellular redox changes. Histone H3, the only nucleosomal protein that possesses cysteine(s), can be modified by glutathione (GSH). RESULTS:Using Biotin labeled glutathione ethyl ester (BioGEE) treatment of ...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2012.5021
更新日期:2013-10-20 00:00:00
abstract:AIMS:Recent studies have shown that cigarette smoke (CS)-induced oxidative stress impairs autophagy, resulting in aggresome-formation that correlates with severity of chronic obstructive pulmonary disease (COPD)-emphysema, although the specific step in autophagy pathway that is impaired is unknown. Hence, in this study...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章
doi:10.1089/ars.2016.6842
更新日期:2017-07-20 00:00:00
abstract::Aging of somatic cells can be defined as the gradual loss of the information embedded in the global and local properties of complex macromolecular networks. This loss of information may reflect the dynamic interplay between stochastic factors, such as the accumulation of unrepaired somatic damage, and gene-encoded pro...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2006.8.559
更新日期:2006-03-01 00:00:00
abstract:SIGNIFICANCE:Synaptic degeneration, an early pathological feature in Alzheimer's disease (AD), is closely correlated to impaired cognitive function and memory loss. Recent studies suggest that involvement of amyloid-beta peptide (Aβ) in synaptic mitochondrial alteration underlies these synaptic lesions. Thus, to unders...
journal_title:Antioxidants & redox signaling
pub_type: 杂志文章,评审
doi:10.1089/ars.2011.4277
更新日期:2012-06-15 00:00:00