Induction of autophagy by salidroside through the AMPK-mTOR pathway protects vascular endothelial cells from oxidative stress-induced apoptosis

2016 ◽  
Vol 425 (1-2) ◽  
pp. 125-138 ◽  
Author(s):  
Xiang-Tao Zheng ◽  
Zi-Heng Wu ◽  
Ye Wei ◽  
Ju-Ji Dai ◽  
Guan-Feng Yu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Endothelial Cells ◽  
Vascular Endothelial Cells ◽  
Mtor Pathway ◽  
Vascular Endothelial ◽  
Induced Apoptosis

scholarly journals EGCG protects vascular endothelial cells from oxidative stress-induced damage by targeting the autophagy-dependent PI3K-AKT-mTOR pathway

2020 ◽  
Vol 8 (5) ◽  
pp. 200-200 ◽  
Author(s):  
Jiao Meng ◽  
Yuhua Chen ◽  
Junzhe Wang ◽  
Junling Qiu ◽  
Cuicui Chang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Endothelial Cells ◽  
Vascular Endothelial Cells ◽  
Mtor Pathway ◽  
Vascular Endothelial

scholarly journals Resveratrol Protects Vascular Endothelial Cells from High Glucose-Induced Apoptosis through Inhibition of NADPH Oxidase Activation-Driven Oxidative Stress

2013 ◽  
Vol 19 (9) ◽  
pp. 675-681 ◽  
Author(s):  
Feng Chen ◽  
Li-Hua Qian ◽  
Bo Deng ◽  
Zhi-Min Liu ◽  
Ying Zhao ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Endothelial Cells ◽  
Nadph Oxidase ◽  
High Glucose ◽  
Vascular Endothelial Cells ◽  
Vascular Endothelial ◽  
Induced Apoptosis ◽  
Nadph Oxidase Activation

scholarly journals miR-181c-5p mediates apoptosis of vascular endothelial cells induced by hyperoxemia via ceRNA crosstalk

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jizhi Wu ◽  
Guangqi Zhang ◽  
Hui Xiong ◽  
Yuguang Zhang ◽  
Gang Ding ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Oxygen Therapy ◽  
Vascular Endothelial Cells ◽  
Inhibitory Effect ◽  
Vascular Endothelial ◽  
Pulmonary Capillaries ◽  
Pulmonary Capillary ◽  
Capillary Endothelial Cells ◽  
Nasal Inhalation ◽  
Induced Apoptosis

AbstractOxygen therapy has been widely used in clinical practice, especially in anesthesia and emergency medicine. However, the risks of hyperoxemia caused by excessive O2 supply have not been sufficiently appreciated. Because nasal inhalation is mostly used for oxygen therapy, the pulmonary capillaries are often the first to be damaged by hyperoxia, causing many serious consequences. Nevertheless, the molecular mechanism by which hyperoxia injures pulmonary capillary endothelial cells (LMECs) has not been fully elucidated. Therefore, we systematically investigated these issues using next-generation sequencing and functional research techniques by focusing on non-coding RNAs. Our results showed that hyperoxia significantly induced apoptosis and profoundly affected the transcriptome profiles of LMECs. Hyperoxia significantly up-regulated miR-181c-5p expression, while down-regulated the expressions of NCAPG and lncRNA-DLEU2 in LMECs. Moreover, LncRNA-DLEU2 could bind complementarily to miR-181c-5p and acted as a miRNA sponge to block the inhibitory effect of miR-181c-5p on its target gene NCAPG. The down-regulation of lncRNA-DLEU2 induced by hyperoxia abrogated its inhibition of miR-181c-5p function, which together with the hyperoxia-induced upregulation of miR-181c-5p, all these significantly decreased the expression of NCAPG, resulting in apoptosis of LMECs. Our results demonstrated a ceRNA network consisting of lncRNA-DLEU2, miR-181c-5p and NCAPG, which played an important role in hyperoxia-induced apoptosis of vascular endothelial injury. Our findings will contribute to the full understanding of the harmful effects of hyperoxia and to find ways for effectively mitigating its deleterious effects.

Z-Ligustilide protects vascular endothelial cells from oxidative stress and rescues high fat diet-induced atherosclerosis by activating multiple NRF2 downstream genes

2019 ◽  
Vol 284 ◽  
pp. 110-120 ◽  
Author(s):  
Yao Zhu ◽  
Yajie Zhang ◽  
Xia Huang ◽  
Yong Xie ◽  
Yuan Qu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Endothelial Cells ◽  
High Fat Diet ◽  
Vascular Endothelial Cells ◽  
Vascular Endothelial ◽  
High Fat

Glutamate induces oxidative stress and apoptosis in cerebral vascular endothelial cells: contributions of HO-1 and HO-2 to cytoprotection

2006 ◽  
Vol 290 (5) ◽  
pp. C1399-C1410 ◽  
Author(s):  
Helena Parfenova ◽  
Shyamali Basuroy ◽  
Sujoy Bhattacharya ◽  
Dilyara Tcheranova ◽  
Yan Qu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Reactive Oxygen Species ◽  
Endothelial Cells ◽  
Vascular Endothelium ◽  
Vascular Endothelial Cells ◽  
Glutamate Toxicity ◽  
Vascular Endothelial ◽  
Oxygen Species ◽  
Apoptotic Effects ◽  
Cerebral Vascular

In cerebral circulation, epileptic seizures associated with excessive release of the excitatory neurotransmitter glutamate cause endothelial injury. Heme oxygenase (HO), which metabolizes heme to a vasodilator, carbon monoxide (CO), and antioxidants, biliverdin/bilirubin, is highly expressed in cerebral microvessels as a constitutive isoform, HO-2, whereas the inducible form, HO-1, is not detectable. Using cerebral vascular endothelial cells from newborn pigs and HO-2-knockout mice, we addressed the hypotheses that 1) glutamate induces oxidative stress-related endothelial death by apoptosis, and 2) HO-1 and HO-2 are protective against glutamate cytotoxicity. In cerebral endothelial cells, glutamate (0.1–2.0 mM) increased formation of reactive oxygen species, including superoxide radicals, and induced major keystone events of apoptosis, such as NF-κB nuclear translocation, caspase-3 activation, DNA fragmentation, and cell detachment. Glutamate-induced apoptosis was greatly exacerbated in HO-2 gene-deleted murine cerebrovascular endothelial cells and in porcine cells with pharmacologically inhibited HO-2 activity. Glutamate toxicity was prevented by superoxide dismutase, suggesting apoptotic changes are oxidative stress related. When HO-1 was pharmacologically upregulated by cobalt protoporphyrin, apoptotic effects of glutamate in cerebral endothelial cells were completely prevented. Glutamate-induced reactive oxygen species production and apoptosis were blocked by a CO-releasing compound, CORM-A1 (50 μM), and by bilirubin (1 μM), consistent with the antioxidant and cytoprotective roles of the end products of HO activity. We conclude that both HO-1 and HO-2 have anti-apoptotic effects against oxidative stress-related glutamate toxicity in cerebral vascular endothelium. Although HO-1, when induced, provides powerful protection, HO-2 is an essential endogenous anti-apoptotic factor against glutamate toxicity in the cerebral vascular endothelium.

Potential of aqueous extract of saffron ( Crocus sativus L.) in blocking the oxidative stress by modulation of signal transduction in human vascular endothelial cells

2016 ◽  
Vol 26 ◽  
pp. 123-134 ◽  
Author(s):  
V. Rodriguez-Ruiz ◽  
A. Barzegari ◽  
M. Zuluaga ◽  
S. Zunooni-Vahed ◽  
Y. Rahbar-Saadat ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Signal Transduction ◽  
Endothelial Cells ◽  
Aqueous Extract ◽  
Vascular Endothelial Cells ◽  
Crocus Sativus ◽  
Vascular Endothelial ◽  
Crocus Sativus L

Hydroxytyrosol NO regulates oxidative stress and NO production through SIRT1 in diabetic mice and vascular endothelial cells

Phytomedicine ◽  
2019 ◽  
Vol 52 ◽  
pp. 206-215 ◽  
Author(s):  
Weirong Wang ◽  
Chenxu Shang ◽  
Wei Zhang ◽  
Zhen Jin ◽  
Feng Yao ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Endothelial Cells ◽  
Vascular Endothelial Cells ◽  
No Production ◽  
Vascular Endothelial ◽  
Diabetic Mice

scholarly journals Protective effect of Melissa officinalis extract against H2O2-induced oxidative stress in human vascular endothelial cells

2016 ◽  
Vol 11 (5) ◽  
pp. 383 ◽  
Author(s):  
Leila Safaeian ◽  
SeyyedEbrahim Sajjadi ◽  
ShaghayeghHaghjooy Javanmard ◽  
Hossein Montazeri ◽  
Fariba Samani
Keyword(s):  
Oxidative Stress ◽  
Endothelial Cells ◽  
Protective Effect ◽  
Vascular Endothelial Cells ◽  
Vascular Endothelial ◽  
Melissa Officinalis

Molecular adaptation of vascular endothelial cells to oxidative stress

1993 ◽  
Vol 264 (3) ◽  
pp. C715-C722 ◽  
Author(s):  
D. Lu ◽  
N. Maulik ◽  
I. I. Moraru ◽  
D. L. Kreutzer ◽  
D. K. Das
Keyword(s):  
Oxidative Stress ◽  
Endothelial Cells ◽  
Cultured Cells ◽  
Vascular Endothelial Cells ◽  
Molecular Adaptation ◽  
Vascular Endothelial ◽  
Trypan Blue Exclusion ◽  
Two Dimensional Gel Electrophoresis ◽  
H2o2 Treatment ◽  
Trypan Blue Exclusion Test

Cellular organisms respond at the cellular and molecular level when confronted with sudden changes in environment, and molecular adaptation represents the ability of the cells to acclimate themselves to their new environment. In this study we examined the response of bovine vascular endothelial cells (VEC) to the oxidative stress by exposing the cultured cells to two different concentrations of H2O2, 0.04 or 0.08 mM, for 18-24 h. H2O2-exposed VEC displayed good viability (85-90% for 0.04 mM H2O2; 75-80% for 0.08 mM H2O2) and exhibited normal morphology. H2O2 treatment of the VEC was associated with the expression of a number of new proteins, as demonstrated by two-dimensional gel electrophoresis of total cell lysate. Cells exposed to 0.04 mM H2O2 expressed 25 new proteins, whereas 19 newly expressed proteins were detected when the cells were exposed to 0.08 mM H2O2. Western blot analysis of H2O2-treated VEC using specific antibodies to heat-shock proteins (HSP) identified one of these proteins as a member of the HSP 70 family. In addition, H2O2 induced an increase in antioxidative enzyme activities in the VEC, including superoxide dismutase, catalase, and glutathione peroxidase. Moreover, these changes were a truly adaptive phenomenon because challenging the VEC with brief exposure to toxic levels of H2O2 (1 mM for 30 min) showed increased viability (by Trypan blue exclusion test) and decreased injury (by lactate dehydrogenase supernatant-to-cellular ratio determination) in adapted cells (preexposed to 0.04 or 0.08 mM H2O2) compared with control cells.(ABSTRACT TRUNCATED AT 250 WORDS)

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