Abstract:
:The intestinal tract, known for its capability for self-renew, represents the first barrier of defence between the organism and its luminal environment. The thiol/disulfide redox systems comprising the glutathione/glutathione disulfide (GSH/GSSG), cysteine/cystine (Cys/CySS) and reduced and oxidized thioredoxin (Trx/TrxSS) redox couples play important roles in preserving tissue redox homeostasis, metabolic functions, and cellular integrity. Control of the thiol-disulfide status at the luminal surface is essential for maintaining mucus fluidity and absorption of nutrients, and protection against chemical-induced oxidant injury. Within intestinal cells, these redox couples preserve an environment that supports physiological processes and orchestrates networks of enzymatic reactions against oxidative stress. In this review, we focus on the intestinal redox and antioxidant systems, their subcellular compartmentation, redox signalling and epithelial turnover, and contribution of luminal microbiota, key aspects that are relevant to understanding redox-dependent processes in gut biology with implications for degenerative digestive disorders, such as inflammation and cancer.
journal_name
Free Radic Resjournal_title
Free radical researchauthors
Circu ML,Aw TYdoi
10.3109/10715762.2011.611509subject
Has Abstractpub_date
2011-11-01 00:00:00pages
1245-66issue
11-12eissn
1071-5762issn
1029-2470journal_volume
45pub_type
杂志文章,评审abstract::The effects of inorganic phosphate (Pi), the main intracellular membrane permeable anion capable of altering mitochondrial pH gradients (Delta pH), were measured on mitochondrial H2O2 release. As expected, Pi decreased Delta pH and increased the electric membrane potential (Delta Psi). Mitochondrial H2O2 release was s...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760400009258
更新日期:2004-10-01 00:00:00
abstract::Identification of free radicals was performed for the reaction mixtures of autoxidized 1,2-dilinoleoylphosphatidylcholine (DLPC) with ferrous ions (or DLPC hydroperoxide with ferrous ions) and of DLPC with soybean lipoxygenase using electron spin resonance (ESR), high performance liquid chromatography (HPLC)--ESR and ...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760500232073
更新日期:2005-09-01 00:00:00
abstract::APE1/Ref-1, the mammalian ortholog of E. coli Xth, and a multifunctional protein possessing both DNA repair and transcriptional regulatory activities, has dual role in controlling cellular response to oxidative stress. It is rate-limiting in repair of oxidative DNA damage including strand breaks and also has co-transc...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760701765616
更新日期:2008-01-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2017.1364377
更新日期:2017-07-01 00:00:00
abstract::Oxidative stress is associated with many cardiovascular diseases, such as hypertension and arteriosclerosis. Oxidative stress reportedly activates the L-type voltage-gated calcium channel (VDCCL) and elevates [Ca2+]i in many cells. However, how oxidative stress activates VDCCL under clinical setting and the consequenc...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2018.1556394
更新日期:2019-01-01 00:00:00
abstract::The effects of various free radicals derived from 6-formylpterin (6-FP), alpha-phenyl-tert-butyl nitrone (PBN) and 2,2'-azobis (2-amidinopropane) dihydrochloride (AAPH) combined with hyperthermia, on gene expression in similarly enhanced apoptosis of human lymphoma U937 cells were investigated using cDNA microarrays c...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760600946432
更新日期:2007-01-01 00:00:00
abstract::Reactive oxygen species (ROS) are critically important chemical intermediates in biological studies, due to their multiple physiologically essential functions and their often pathologically deleterious effects. Consequently, it is vital that their presence in biological samples has to be quantifiable. However, their h...
journal_title:Free radical research
pub_type: 杂志文章,评审
doi:10.3109/10715761003709802
更新日期:2010-06-01 00:00:00
abstract::Hypoxia is a well-known threat to neuronal cells and triggers the pathophysiological syndromes in extreme environments such as high altitudes and traumatic conditions such as stroke. Among several prophylactic molecules proven suitable for ameliorating free radical damage, NAP (an octapeptide with initial amino acids:...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2015.1011153
更新日期:2015-04-01 00:00:00
abstract::Lipid peroxidation generates reactive aldehydes, most notably hydroxynonenal (HNE), which covalently binds amino acid residue side chains leading to protein inactivation and insolubility. Specific adducts of lipid peroxidation have been demonstrated to be intimately associated with pathological lesions of Alzheimer's ...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2013.794265
更新日期:2013-07-01 00:00:00
abstract::Although the primary biological function of retinal photoreceptors is to absorb light and provide visual information, extensive exposure to intense light could increase the risk of phototoxic reactions mediated by products of rhodopsin bleaching that might accumulate in photoreceptor outer segments (POS). The phototox...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2019.1603377
更新日期:2019-04-01 00:00:00
abstract::Many epidemiological data indicate the presence of a strong familial component of longevity that is largely determined by genetics, and a number of possible associations between longevity and allelic variants of genes have been described. A breakthrough strategy to get insight into the genetics of longevity is the stu...
journal_title:Free radical research
pub_type: 杂志文章,评审
doi:10.1080/10715760600917136
更新日期:2006-12-01 00:00:00
abstract::The response of HeLa cells to subcellular spatially localized two-photon irradiation of a singlet oxygen photosensitizer (protoporphyrin IX, PpIX) using a focused laser was assessed. Upon irradiation under these conditions, a localized population of PpIX excited states can be produced with meaningful intracellular spa...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2013.817670
更新日期:2013-09-01 00:00:00
abstract::Amphotericin B has been the gold standard for the treatment of invasive mycosis for many years. Its resistance mechanisms are reported to be mainly related to the decrease of ergosterol content or the changes of cell wall. Previous study has shown that Saccharomyces cerevisiae strain lack of BSC2 was sensitive signifi...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2020.1751151
更新日期:2020-04-01 00:00:00
abstract::Rat granulosa cells (GCs) were treated with human chorionic gonadotropin (hCG), 8-bromo-adenosine 3',5'-cyclic monophosphate (8-Br-cAMP), forskolin, phorbol 12-myristate 13-acetate (PMA), A23187 or pregnenolone in the absence or presence of hydrogen peroxide (H(2)O(2)). Different doses of trilostane were applied to GC...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2012.669835
更新日期:2012-06-01 00:00:00
abstract::Sonodynamic therapy, a promising new approach to cancer treatment, is based on synergistic cell killing by combination of certain drugs (sonosensitizers) and ultrasound. Although the mechanism of sonodynamic action is not understood, the role of free radicals produced from sonosensitizers by ultrasound is implicated. ...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715769609145652
更新日期:1996-07-01 00:00:00
abstract::In cells, NADH and NADPH are mainly bound to dehydrogenases such as lactate dehydrogenase (LDH). In cell-free systems, the binary LDH-NADH complex has been demonstrated to produce reactive oxygen species via a chain oxidation of NADH initiated and propagated by superoxide. We studied here whether this chain radical re...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760500231786
更新日期:2005-10-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2013.778990
更新日期:2013-05-01 00:00:00
abstract::Exposure of dry powder forms of the drugs nitrendipine, nifedipine, felodipine, and nimodipine to gamma-radiation results in the formation of free radicals detected by electron paramagnetic resonance (EPR) spectroscopy. The four structurally related drugs show qualitatively identical EPR spectral features in terms of ...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715769900300791
更新日期:1999-09-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2013.853877
更新日期:2013-12-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2014.929120
更新日期:2014-09-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715769900300601
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/1071576031000136568
更新日期:2003-08-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715769509064038
更新日期:1995-09-01 00:00:00
abstract::We investigated the effects of fluvastatin, a 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor, on reactive oxygen species (ROS) and on oxidative DNA damage in vitro, as well as the effects of the main fluvastatin metabolites (M2, M3, and M4) and other inhibitors of the same enzyme, pravastatin and simvastati...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760100301291
更新日期:2001-12-01 00:00:00
abstract::8-Oxoguanine (8-oxoG) is the most common DNA base modification in the mammalian genome, associated with oxidative stress. Here we analysed the alterations in the distribution of 8-oxoG across the entire murine genome, before and after an elevation of oxidative stress by the use of ferric nitrilotriacetate (Fe-NTA) as ...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2020.1733548
更新日期:2020-04-16 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2013.815346
更新日期:2013-09-01 00:00:00
abstract::The seasonal variation of CuCl2-mediated low density lipoprotein (LDL) oxidation (10 microM Cu2+, lag phase, rate of oxidation and maximum absorbance at 234 nm) were measured in 43 men and women on 4-6 occasions (mean 5.7 +/- 0.5) over a 12-month period. The lag phase averaged 52.7 +/- 0.6 min and did not differ by ge...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/1071576031000061020
更新日期:2003-03-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760400023689
更新日期:2005-01-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2014.951838
更新日期:2014-11-01 00:00:00
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journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760100300641
更新日期:2001-08-01 00:00:00