Abstract:
:The infiltration of red blood cells into atheromatous plaques is implicated in atherogenesis. Inside the lesion, hemoglobin (Hb) is oxidized to ferri- and ferrylHb which exhibit prooxidant and proinflammatory activities. Cystathione gamma-lyase- (CSE-) derived H2S has been suggested to possess various antiatherogenic actions. Expression of CSE was upregulated predominantly in macrophages, foam cells, and myofibroblasts of human atherosclerotic lesions derived from carotid artery specimens of patients. A similar pattern was observed in aortic lesions of apolipoprotein E-deficient mice on high-fat diet. We identified several triggers for inducing CSE expression in macrophages and vascular smooth muscle cells including heme, ferrylHb, plaque lipids, oxidized low-density lipoprotein, tumor necrosis factor-α, and interleukin-1β. In the interplay between hemoglobin and atheroma lipids, H2S significantly mitigated oxidation of Hb preventing the formation of ferrylHb derivatives, therefore providing a novel function as a heme-redox-intermediate-scavenging antioxidant. By inhibiting Hb-lipid interactions, sulfide lowered oxidized Hb-mediated induction of adhesion molecules in endothelium and disruption of endothelial integrity. Exogenous H2S inhibited heme and Hb-mediated lipid oxidation of human atheroma-derived lipid and human complicated lesion. Our study suggests that the CSE/H2S system represents an atheroprotective pathway for removing or limiting the formation of oxidized Hb and lipid derivatives in the atherosclerotic plaque.
journal_name
Oxid Med Cell Longevjournal_title
Oxidative medicine and cellular longevityauthors
Potor L,Nagy P,Méhes G,Hendrik Z,Jeney V,Pethő D,Vasas A,Pálinkás Z,Balogh E,Gyetvai Á,Whiteman M,Torregrossa R,Wood ME,Olvasztó S,Nagy P,Balla G,Balla Jdoi
10.1155/2018/3812568subject
Has Abstractpub_date
2018-01-21 00:00:00pages
3812568eissn
1942-0900issn
1942-0994journal_volume
2018pub_type
杂志文章abstract::Methanol extracts of Momordica charantia L. fruits are extensively studied for their antiaging activities. A new cucurbitane-type triterpenoid (1) and nine other known compounds (2-10) were isolated, and their structures were determined according to their spectroscopic characteristics and chemical derivatization. Biol...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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abstract::Increasing evidence indicates that most of the tumors are sustained by a distinct population of cancer stem cells (CSCs), which are responsible for growth, metastasis, invasion, and recurrence. CSCs are typically characterized by self-renewal, the key biological process allowing continuous tumor proliferation, as well...
journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/7126976
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/2325391
更新日期:2020-03-18 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2014/505368
更新日期:2014-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/9703609
更新日期:2017-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2018/5123147
更新日期:2018-12-10 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/5139458
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,评审
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/6439021
更新日期:2019-12-14 00:00:00
abstract::[This corrects the article DOI: 10.1155/2020/9250512.]. ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 已发布勘误
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
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journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2019/4940825
更新日期:2019-11-11 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.4161/oxim.2.3.8804
更新日期:2009-07-01 00:00:00
abstract::An optimisation of extraction towards an increased antioxidant capacity and the study on the extracts' composition by HPLC-ESI-Q-TOF-MS were performed on different organs of a rarely studied plant: Rheum cordatum Losinsk (Polygonaceae) growing in Kazakhstan. More than 20 compounds from anthraquinones and phenolics wer...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/5465463
更新日期:2019-11-16 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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abstract::[This corrects the article DOI: 10.1155/2017/5031926.]. ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 已发布勘误
doi:10.1155/2017/1913954
更新日期:2017-01-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
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