Abstract:
:Obesity- or diabetes-induced oxidative stress is discussed as a major risk factor for DNA damage. Vitamin E and many polyphenols exhibit antioxidative activities with consequences on epigenetic regulation of inflammation and DNA repair. The present study investigated the counteraction of oxidative stress by vitamin E in the colorectal cancer cell line Caco-2 under normal (1 g/l) and high (4.5 g/l) glucose cell culture condition. Malondialdehyde (MDA) as a surrogate marker of lipid peroxidation and reactive oxygen species (ROS) was analyzed. Gene expression and promoter methylation of the DNA repair gene MutL homolog 1 (MLH1) and the DNA methyltransferase 1 (DNMT1) as well as global methylation by LINE-1 were investigated. Results revealed a dose-dependent counteracting effect of vitamin E on H2O2-induced oxidative stress. Thereby, 10 μM vitamin E proved to be more efficient than did 50 μM in reducing MDA. Further, an induction of MLH1 and DNMT1 gene expression was noticed, accompanied by an increase in global methylation. Whether LINE-1 hypomethylation is a cause or effect of oxidative stress is still unclear. In conclusion, supplementation of exogenous antioxidants like vitamin E in vitro exhibits beneficial effects concerning oxidative stress as well as epigenetic regulation involved in DNA repair.
journal_name
Oxid Med Cell Longevjournal_title
Oxidative medicine and cellular longevityauthors
Zappe K,Pointner A,Switzeny OJ,Magnet U,Tomeva E,Heller J,Mare G,Wagner KH,Knasmueller S,Haslberger AGdoi
10.1155/2018/3734250subject
Has Abstractpub_date
2018-03-22 00:00:00pages
3734250eissn
1942-0900issn
1942-0994journal_volume
2018pub_type
杂志文章abstract::The placenta plays a vital role in fetal development during pregnancy. Dysfunction of the placenta can be caused by oxidative stress and can lead to abnormal fetal development. Preventing oxidative stress of the placenta is thus an important measure to ensure positive birth outcomes. Research shows that tryptophan and...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2018/1054797
更新日期:2018-07-22 00:00:00
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journal_title:Oxidative medicine and cellular longevity
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doi:10.1155/2018/5287971
更新日期:2018-05-10 00:00:00
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journal_title:Oxidative medicine and cellular longevity
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doi:10.1155/2018/1538632
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/6926712
更新日期:2018-04-05 00:00:00
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journal_title:Oxidative medicine and cellular longevity
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doi:10.1155/2016/5741517
更新日期:2016-01-01 00:00:00
abstract::Oleuropein (OP) is a bioactive compound derived from plants of the genus Oleaceae exhibiting antitumor properties in several human cancers, including non-small-cell lung cancer (NSCLC). Recent evidence suggests that OP has proapoptotic effects on NSCLC cells via the mitochondrial apoptotic pathway. However, the exact ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/8576961
更新日期:2019-07-22 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/9701285
更新日期:2020-06-08 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2016/4973239
更新日期:2016-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/3427430
更新日期:2020-03-25 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/8696587
更新日期:2016-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/4578175
更新日期:2019-05-09 00:00:00
abstract::Alzheimer's disease (AD) is the most common form of dementia, characterized by progressive neurodegeneration. Pathogenetic mechanisms, triggered by β-amyloid (Aβ) accumulation, include oxidative stress, derived from energy homeostasis deregulation and involving mitochondria and peroxisomes. We here addressed the oxida...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2015/967203
更新日期:2015-01-01 00:00:00
abstract::Vascular endothelial dysfunction is associated with increased mortality in patients with diabetes. Astragaloside IV (As-IV) is a bioactive saponin with therapeutic potential as an anti-inflammatory and antiendothelial dysfunction. However, the underlying mechanism for how As-IV ameliorated endothelial dysfunction is s...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/5070415
更新日期:2020-09-14 00:00:00
abstract::Since excessive reactive oxygen species (ROS) is known to be associated with aging and age-related diseases, strategies modulating ROS level and antioxidant defense systems may contribute to the delay of senescence. Here we show that the protein hydrolyzate from Angelica sinensis was capable of increasing oxidative su...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/8956981
更新日期:2016-01-01 00:00:00
abstract::Uroporphyrinogen decarboxylase (Hem12p) and transketolase (Tkl1p) are key mediators of two critical processes within the cell, heme biosynthesis, and the nonoxidative part of the pentose phosphate pathway (PPP). The redox properties of both Hem12p and Tkl1p from Saccharomyces cerevisiae were investigated using proteom...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2013/932472
更新日期:2013-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2013/743938
更新日期:2013-01-01 00:00:00
abstract:Background:Renal fibrosis is a common pathological symptom of chronic kidney disease (CKD). Many studies support that mitochondrial dysfunction and endoplasmic reticulum (ER) stress are implicated in the pathogenesis of CKD. In our study, we investigated the benefits and underlying mechanisms of Mito-TEMPO on renal fib...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/5828120
更新日期:2018-03-25 00:00:00
abstract::Parkinson's disease is a neurodegenerative disorder characterized by movement alterations caused by reduced dopaminergic neurotransmission in the nigrostriatal pathway, presumably by oxidative stress (OS). MPP(+) intrastriatal injection leads to the overproduction of free radicals (FR). The increasing formation of FR ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2015/276039
更新日期:2015-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/5181429
更新日期:2019-11-12 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2021/3010548
更新日期:2021-01-12 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/4310475
更新日期:2017-01-01 00:00:00
abstract::Degradation of oxidized or oxidatively modified proteins is an essential part of the antioxidant defenses of cells. 4-Hydroxy-2-nonenal, a major reactive aldehyde formed by lipid peroxidation, causes many types of cellular damage. It has been reported that 4-hydroxy-2-nonenal-modified proteins are degraded by the ubiq...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2011/213686
更新日期:2011-01-01 00:00:00
abstract::Our previous study showed that proteasomal inhibitor MG132 can prevent diabetic nephropathy (DN) along with upregulation of nuclear factor (erythroid-derived 2)-like 2 (Nrf2). The present study was to investigate whether MG132 can prevent DN in wild-type and Nrf2-KO mice. Type 1 diabetes was induced in wild-type and N...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/3671751
更新日期:2017-01-01 00:00:00
abstract::The p75 neurotrophin receptor (p75NTR) is an alpha- and gamma-secretase substrate expressed preferentially in the cholinergic neurons of the nucleus basalis of Meynert, the hippocampus, and the cerebellum of the adult brain. Mutations of the gamma-secretase, presenilin, have been implicated in familial Alzheimer's dis...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.4161/oxim.2.4.9745
更新日期:2009-09-01 00:00:00
abstract::Mechanisms underlying hypertensive target organ damage (TOD) are not completely understood. The pathophysiological role of mitochondrial oxidative stress, resulting from mitochondrial dysfunction, in development of TOD is unclear. The stroke-prone spontaneously hypertensive rat (SHRSP) is a suitable model of human hyp...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2016/1067801
更新日期:2016-01-01 00:00:00
abstract::Extracorporeal shock wave (ECSW) and adipose-derived mesenchymal stem cells (ADMSCs) have been recognized to have capacities of anti-inflammation and angiogenesis. We tested the hypothesis that ECSW and ADMSC therapy could attenuate ischemia-reperfusion- (IR-) induced thigh injury (femoral artery tightened for 6 h the...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2018/6012636
更新日期:2018-04-02 00:00:00
abstract::As one of the major risks for urolithiasis, hyperoxaluria can be caused by genetic defect or dietary intake. And high oxalate induced renal epithelial cells injury is related to oxidative stress and mitochondrial dysfunction. Here, we investigated whether MitoTEMPO, a mitochondria-targeted antioxidant, could protect a...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/7528090
更新日期:2017-01-01 00:00:00
abstract::Fruits, such as grapes, are essential food of the Mediterranean diet. Grape extracts have potent antioxidant and chemopreventive properties in vitro. Numerous studies have examined the effects of plant extract administration on redox status at rest in animals and humans but their results are controversial. However, th...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2012/185867
更新日期:2012-01-01 00:00:00
abstract::Oxidative stress and vascular endothelial dysfunction are established characteristics of cystic fibrosis (CF). Oxidative stress may contribute to vascular dysfunction via inhibition of nitric oxide (NO) bioavailability. Purpose. To determine if ingestion of a single antioxidant cocktail (AOC) improves vascular endothe...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/1629638
更新日期:2019-06-19 00:00:00
abstract::Neural stem/progenitor cells (NSPCs) are self-renewing, multipotent cells located in the embryonic and adult central nervous system (CNS). Extensive preclinical and clinical studies have shed light on the potential of stem cell replacement therapy for various neurodegenerative diseases. The key prerequisite for the su...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/5963037
更新日期:2020-04-25 00:00:00