Abstract:
:Endothelial microparticles are effectors of endothelial damage; however mechanisms involved are unclear. We examined the effects of eMPs on cultured endothelial cells (ECs) and isolated vessels and investigated the role of eMP-derived reactive oxygen species (ROS) and redox signaling in these processes. eMPs were isolated from EC media and their ability to directly produce ROS was assessed by lucigenin and liquid chromatography. Nicotinamide adenine dinucleotide phosphate oxidase (Nox) subunits were probed by Western blot. ECs were treated with eMPs and effects on kinase signaling, superoxide anion (O2 (∙-)) generation, and nitric oxide (NO) production were examined. Acetylcholine-mediated vasorelaxation was assessed by myography in eMP-treated mesenteric arteries. eMPs contained Nox1, Nox2, Nox4, p47(phox), p67(phox), and p22(phox) and they produced ROS which was inhibited by the Nox inhibitor, apocynin. eMPs increased phosphorylation of ERK1/2 and Src, increased O2 (∙-) production, and decreased A23187-induced NO production in ECs. Pretreatment of eMPs with apocynin diminished eMP-mediated effects on ROS and NO production but had no effect on eMP-mediated kinase activation or impairment in vasorelaxation. Our findings identify a novel mechanism whereby eMP-derived ROS contributes to MP bioactivity. These interactions may be important in conditions associated with vascular injury and increased eMP formation.
journal_name
Oxid Med Cell Longevjournal_title
Oxidative medicine and cellular longevityauthors
Burger D,Turner M,Munkonda MN,Touyz RMdoi
10.1155/2016/5047954subject
Has Abstractpub_date
2016-01-01 00:00:00pages
5047954eissn
1942-0900issn
1942-0994journal_volume
2016pub_type
杂志文章abstract::In recent years, metabolomics analyses have been widely applied to cerebral ischemia research. This paper introduces the latest proceedings of metabolomics research on cerebral ischemia. The main techniques, models, animals, and biomarkers of cerebral ischemia will be discussed. With analysis help from the MBRole webs...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2016/9162074
更新日期:2016-01-01 00:00:00
abstract::Serine-threonine kinase receptor-associated protein (STRAP) is a transforming growth factor β (TGF-β) receptor-interacting protein that has been implicated in both cell proliferation and cell death in response to various stresses. However, the precise roles of STRAP in these cellular processes are still unclear. The m...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2018/5241524
更新日期:2018-04-19 00:00:00
abstract::An imbalance in the reactive oxygen species (ROS) homeostasis is involved in the pathogenesis of oxidative stress-related diseases. Astaxanthin, a xanthophyll carotenoid with high antioxidant capacities, has been shown to prevent the first stages of oxidative stress. Here, we evaluate the antioxidant capacities of ast...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/8073798
更新日期:2017-01-01 00:00:00
abstract::Osteoarthritis (OA) is a degenerative joint disease characterized by cartilage degradation and inflammation. Interleukin-1β is the key player in the pathogenesis of OA, which induces the expression of various catabolic factors that contribute to cartilage degradation. Cynaroside (luteolin-7-O-glucoside or luteoloside)...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/9358080
更新日期:2020-01-24 00:00:00
abstract::Reactive oxygen species (ROS) are derived from the metabolism of oxygen and are traditionally viewed as toxic byproducts that cause damage to biomolecules. It is now becoming widely acknowledged that ROS are key modulators in a variety of biological processes and pathological states. ROS mediate key signaling transduc...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2013/374963
更新日期:2013-01-01 00:00:00
abstract::Although a growing body of evidence suggests that plant polyphenols can modulate human immune responses, their simultaneous action on monocyte and neutrophil oxidative burst is currently poorly understood. Based on the hypothesis that various polyphenols contained in plant extracts might affect the oxidative burst of ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2014/764367
更新日期:2014-01-01 00:00:00
abstract::Human skeletal muscle is a vital organ involved in movement and force generation. It suffers from deterioration in mass, strength, and regenerative capacity in sarcopenia. Skeletal muscle satellite cells are involved in the regeneration process in response to muscle loss. Tocotrienol, an isomer of vitamin E, was repor...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/9141343
更新日期:2019-01-10 00:00:00
abstract::N-Acetyl-p-aminophenol (APAP) or acetaminophen is the most common drug ingredient worldwide. It is found in more than 600 different over-the-counter and prescription medicines. Its long-term and overdose use is highly toxic and may result in liver injury. Thus, this study was designed to assess the preventive effects ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/2745352
更新日期:2019-03-26 00:00:00
abstract:SCOPE:To determine whether doses of quercetin in the range of serum concentrations exert any effect on triacylglycerol accumulation in maturing preadipocytes and mature adipocytes. The influence on the expression of adipogenic markers as well as on gene expression and activity of enzymes involved in triacylglycerol met...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2015/480943
更新日期:2015-01-01 00:00:00
abstract::Fructose corn syrup is cheap sweetener and prolongs the shelf life of products, but fructose intake causes hyperinsulinemia, hypertriglyceridemia, and hypertension. All of them are referred to as metabolic syndrome and they are risk factors for cardiovascular diseases. Hence, the harmful effects of increased fructose ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/3419479
更新日期:2016-01-01 00:00:00
abstract::Reversible myocardial ischemia/reperfusion (I/R) or ischemic preconditioning (IPC) is associated with an immediate genomic response; IPC-induced immediate early genes are associated with reduced infarct size. Because the immediate early response gene X-1 (IEX-1) plays a central role in cell apoptosis, we examine wheth...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/6109061
更新日期:2017-01-01 00:00:00
abstract::Nutritional status, in particular overweight and obesity, as well as sedentarism and high-fat diet consumption, are important risk factors to develop chronic diseases, which have a higher impact on the elderly's health. Therefore, these nutritional problems have become a concern to human healthspan and longevity. The ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2020/3123268
更新日期:2020-05-16 00:00:00
abstract::We examined in vitro antioxidant capacity of polyphenolic extract obtained from the wood of oak Quercus robur (QR), Robuvit, using TEAC (Trolox equivalent antioxidant capacity) method and the effect of its intake on markers of oxidative stress, activity of antioxidant enzymes, and total antioxidant capacity in plasma ...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2014/639868
更新日期:2014-01-01 00:00:00
abstract::Viruses play an important role in cancerogenesis. It is estimated that approximately 20% of all cancers are linked to infectious agents. The viral genes modulate the physiological machinery of infected cells that lead to cell transformation and development of cancer. One of the important adoptive responses by the canc...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2016/6468342
更新日期:2016-01-01 00:00:00
abstract::This paper compiles the beneficial effects of cocoa polyphenols on human health, especially with regard to cardiovascular and inflammatory diseases, metabolic disorders, and cancer prevention. Their antioxidant properties may be responsible for many of their pharmacological effects, including the inhibition of lipid p...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2012/906252
更新日期:2012-01-01 00:00:00
abstract::Oxidative stress is involved in the development of carotid body (CB) chemosensory potentiation and systemic hypertension induced by chronic intermittent hypoxia (CIH), the main feature of obstructive sleep apnea. We tested whether peroxynitrite (ONOO(-)), a highly reactive nitrogen species, is involved in the enhanced...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/9802136
更新日期:2016-01-01 00:00:00
abstract:Background:Nonalcoholic fatty liver disease (NAFLD) is a common chronic liver disease worldwide, and its incidence is increasing annually, but there is currently no specific drug for treating NAFLD. Shenling Baizhu powder (SL) is a safe herbal compound commonly used in clinical practice. Our previous research has shown...
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
abstract::Allicin was discussed as an active compound with regard to the beneficial effects of garlic in atherosclerosis. The aim of this study was to investigate the cholesterol-lowering properties of allicin. In order to examine its effects on hypercholesterolemia in male ICR mice, this compound with doses of 5, 10, or 20 mg/...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2012/489690
更新日期:2012-01-01 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::Aging leads to a number of disadvantageous changes in the cardiovascular system. Deterioration of vascular homoeostasis with increase in oxidative stress, chronic low-grade inflammation, and impaired nitric oxide bioavailability results in endothelial dysfunction, increased vascular stiffness, and compromised arterial...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2015/658264
更新日期:2015-01-01 00:00:00
abstract::The vascular endothelium plays an essential role in the control of the blood flow. Pharmacological agents like quinone (menadione) at various doses modulate this process in a variety of ways. In this study, Q7, a 2-phenylamino-1,4-naphthoquinone derivative, significantly increased oxidative stress and induced vascular...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/3939540
更新日期:2016-01-01 00:00:00
abstract::The aim of this study was to evaluate the involvement of TNF-α and insulin resistance (IR) in the inflammatory process, oxidative stress, and disease activity in patients with rheumatoid arthritis (RA). This cross-sectional study included 270 subjects (control group, n = 97) and RA patients (n = 173). RA patients were...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2016/8962763
更新日期:2016-01-01 00:00:00
abstract::We have hypothesized that the adaptive response to low doses of ionizing radiation (IR) is mediated by oxidized cell-free DNA (cfDNA) fragments. Here, we summarize our experimental evidence for this model. Studies involving measurements of ROS, expression of the NOX (superoxide radical production), induction of apopto...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2017/9515809
更新日期:2017-01-01 00:00:00
abstract::Uncoupling protein 2 (UCP2) has a cardioprotective role under septic conditions, but the underlying mechanism remains unclear. This study aimed at investigating the effects of UCP2 on the oxidative stress and apoptosis of cardiomyocytes induced by lipopolysaccharide (LPS). First, LPS increased UCP2 expression in cardi...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/2758262
更新日期:2019-04-28 00:00:00
abstract:Objective:The aim of this study was to establish a 3T3-L1 adipocyte model and ApoE-/- mouse model of intermittent hypoxia (IH) composite abnormal glucose metabolism (AGM) in vitro and in vivo and explore their synergistic damage effect leading to atherosclerosis (AS) and the influence of SREBP-1 signaling molecule-rela...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/4862760
更新日期:2019-02-04 00:00:00
abstract::In chronic heart failure (HF), some parameters of oxidative stress are correlated with disease severity. The aim of this study was to evaluate the importance of oxidative stress biomarkers in prognostic risk stratification (death and combined endpoint: heart transplantation or death). In 774 patients, aged 48-59 years...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/9246138
更新日期:2019-10-09 00:00:00
abstract::Diabetes is associated with vascular inflammation, endothelial dysfunction, and oxidative stress, promoting the development of cardiovascular diseases (CVD). Several studies showed that a carotenoid-rich diet is associated to a reduced cardiovascular risk in healthy and diabetic subjects, although the mechanisms of ac...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/8184656
更新日期:2019-01-30 00:00:00
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
doi:10.1155/2018/1538632
更新日期:2018-03-25 00:00:00
abstract::Due to the progressive aging of the society, the prevalence and socioeconomic burden of neurodegenerative diseases are predicted to rise. The most common neurodegenerative disorders nowadays, such as Parkinson's disease, Alzheimer's disease, and amyotrophic lateral sclerosis, can be classified as proteinopathies. They...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
doi:10.1155/2020/3534570
更新日期:2020-10-13 00:00:00
abstract::Hypoxic-ischemic encephalopathy (HIE) is detrimental to newborns and is associated with high mortality and poor prognosis. Thus, the primary aim of the present study was to determine whether glycine could (1) attenuate HIE injury in rats and hypoxic stress in PC12 cells and (2) downregulate mitochondria-mediated autop...
journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2019/4248529
更新日期:2019-02-06 00:00:00