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Drug: Acetylcysteine

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Total 2370 results found since Jan 2013.

Arsenite exposure potentiates apoptosis-inducing effects of tumor necrosis factor-alpha- through reactive oxygen species.
In conclusion, NaAsO2 exposure might amplify inflammation-related tissue injury by potentiating the apoptosis-inducing effect of TNF-α through ROS-dependent mechanism. PMID: 29479036 [PubMed - in process]
Source: Journal of Toxicological Sciences - February 28, 2018 Category: Toxicology Tags: J Toxicol Sci Source Type: research

Reactive oxygen species up-regulate expression of muscle atrophy-associated ubiquitin ligase Cbl-b in rat L6 skeletal muscle cells.
K, Sokabe M, Nikawa T Abstract Unloading-mediated muscle atrophy is associated with increased reactive oxygen species (ROS) production. We previously demonstrated that elevated ubiquitin ligase casitas B-lineage lymphoma-b (Cbl-b) resulted in the loss of muscle volume [Nakao R. et al. Mol Cell Biol, 29: 4798-4811, 2009]. However, the pathological role of ROS production associated with unloading-mediated muscle atrophy still remains unknown. Here, we showed the ROS-mediated signal transduction caused by microgravity or its simulation contributes to Cbl-b expression. In L6 myotubes, the assessment of redox status re...
Source: Am J Physiol Cell Ph... - March 7, 2018 Category: Cytology Authors: Uchida T, Sakashita Y, Kitahata K, Yamashita Y, Tomida C, Kimori Y, Komatsu A, Hirasaka K, Ohno A, Nakao R, Higashitani A, Higashibata A, Ishioka N, Shimazu T, Kobayashi T, Okumura Y, Choi I, Oarada M, Mills EM, Teshima-Kondo S, Takeda S, Tanaka E, Tanaka Tags: Am J Physiol Cell Physiol Source Type: research

Suppression of Nrf2 confers chemosensitizing effect through enhanced oxidant-mediated mitochondrial dysfunction.
In this study, we investigated the mechanism of this chemosensitizing effect. MAIN METHODS: KKU-100 cells were used in the study. Nrf2 expression was knocked down by siRNA and expression was validated by reverse transcription and polymerase chain reaction. Cytotoxicity was assessed by sulforhodamine B method. Intracellular reactive oxygen species (ROS) was examined by fluorescent dye, dichlorofluorescin diacetate method and mitochondrial transmembrane potential was assessed by JC1 dye assay. KEY FINDINGS: Cytotoxicity of cisplatin (Cis) in KKU-100 cells was enhanced by knockdown of Nrf2 expression. The enhanced c...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - March 5, 2018 Category: Drugs & Pharmacology Authors: Sompakdee V, Prawan A, Senggunprai L, Kukongviriyapan U, Samathiwat P, Wandee J, Kukongviriyapan V Tags: Biomed Pharmacother Source Type: research

SMAD4 gene mutation renders pancreatic cancer resistance to radiotherapy through promotion of autophagy.
CONCLUSIONS: Our results demonstrate that defective SMAD4 is responsible for radioresistance in pancreatic cancer through induction of ROS and increased level of radiation-induced autophagy. PMID: 29602802 [PubMed - as supplied by publisher]
Source: Clinical Cancer Research - March 30, 2018 Category: Cancer & Oncology Authors: Wang F, Xia X, Yang C, Shen J, Mai J, Kim HC, Kirui D, Kang Y, Fleming JB, Koay EJ, Mitra S, Ferrari M, Shen H Tags: Clin Cancer Res Source Type: research

Inhibition of NLRP9b attenuates acute lung injury through suppressing inflammation, apoptosis and oxidative stress in murine and cell models.
Abstract Acute lung injury (ALI), known a severe disease along with high morbidity and mortality, is lacking of specific therapies. Inflammation, apoptosis and oxidative stress are critical pathologies that contribute to ALI. Recently, there is study indicated that NLRP9b, a NOD-like receptor (NLR) member, is critical in modulation of inflammatory response. However, the effects of NLRP9b on sepsis-associated ALI, and the underlying molecular mechanism have not been understood. In the present study, the wild type (WT) and NLRP9b-knockout (NLRP9b-/-) mice with C57B/L6 background were subjected to a cecal ligation an...
Source: Biochemical and Biophysical Research communications - April 12, 2018 Category: Biochemistry Authors: Yanling Q, Xiaoning C, Fei B, Liyun F, Huizhong H, Daqing S Tags: Biochem Biophys Res Commun Source Type: research

DUSP14 knockout accelerates cardiac ischemia reperfusion (IR) injury through activating NF- κB and MAPKs signaling pathways modulated by ROS generation.
DUSP14 knockout accelerates cardiac ischemia reperfusion (IR) injury through activating NF-κB and MAPKs signaling pathways modulated by ROS generation. Biochem Biophys Res Commun. 2018 Apr 13;: Authors: Lin B, Xu J, Feng DG, Wang F, Wang JX, Zhao H Abstract Inflammation and oxidative stress are significantly involved in the progression of a variety of diseases, including myocardial ischemia/reperfusion (IR). In the present study, we hypothesized a protective role of dual-specificity phosphatase 14 (DUSP14) in myocardial IR, as well as the underlying molecular mechanism. The results indicated that DUS...
Source: Biochemical and Biophysical Research communications - April 13, 2018 Category: Biochemistry Authors: Lin B, Xu J, Feng DG, Wang F, Wang JX, Zhao H Tags: Biochem Biophys Res Commun Source Type: research

Neuroprotection against 6-OHDA toxicity in PC12 cells and mice through the Nrf2 pathway by a sesquiterpenoid from Tussilago farfara
Publication date: September 2018 Source:Redox Biology, Volume 18 Author(s): Joohee Lee, Kwangho Song, Eugene Huh, Myung Sook Oh, Yeong Shik Kim Oxidative stress plays a key role in neurodegenerative diseases such as Alzheimer's and Parkinson's diseases. Therefore, the nuclear factor-E2-related factor 2 (Nrf2), a key regulator of the antioxidative response, is considered to be important as a therapeutic target for neurodegenerative diseases. We investigated the underlying mechanism of Nrf2-mediated neuroprotective effects against oxidative stress in the PC12 cell line by 7β-(3-ethyl-cis-crotonoyloxy)-1α-(2-methylbutyrylo...
Source: Redox Biology - June 8, 2018 Category: Biology Source Type: research

The apoptotic effect of Zoledronic acid on the nasopharyngeal carcinoma cells via ROS mediated chloride channel activation.
This article is protected by copyright. All rights reserved. PMID: 29884989 [PubMed - as supplied by publisher]
Source: Clinical and Experimental Pharmacology and Physiology - June 8, 2018 Category: Drugs & Pharmacology Authors: Wang L, Gao H, Yang X, Liang X, Tan Q, Chen Z, Zhao C, Gu Z, Yu M, Zheng Y, Huang Y, Zhu L, Jacob TJC, Wang L, Chen L Tags: Clin Exp Pharmacol Physiol Source Type: research

Induction of REDD1 via AP-1 prevents oxidative stress-mediated injury in hepatocytes.
Abstract Regulated in development and DNA damage responses 1 (REDD1) is an inducible gene in response to various stresses, which functions as a negative regulator of the mammalian target of rapamycin protein kinase in complex 1. In the present study, we identified the role of REDD1 under the oxidative stress-mediated hepatocyte injury and its regulatory mechanism. REDD1 protein was increased in H2O2 or tert-butylhydroperoxide (t-BHP)-treated hepatocytes. H2O2 also elevated REDD1 mRNA levels. This event was inhibited by antioxidants such as diphenyleneiodonium chloride, N-acetyl-L-cysteine, or butylated hydroxy ani...
Source: Free Radical Biology and Medicine - June 14, 2018 Category: Biology Authors: Cho SS, Kim KM, Yang JH, Kim JY, Park SJ, Kim SJ, Kim JK, Cho IJ, Ki SH Tags: Free Radic Biol Med Source Type: research

Neuroprotection against 6-OHDA toxicity in PC12 cells and mice through the Nrf2 pathway by a sesquiterpenoid from Tussilago farfara
Publication date: September 2018Source: Redox Biology, Volume 18Author(s): Joohee Lee, Kwangho Song, Eugene Huh, Myung Sook Oh, Yeong Shik KimAbstractOxidative stress plays a key role in neurodegenerative diseases such as Alzheimer's and Parkinson's diseases. Therefore, the nuclear factor-E2-related factor 2 (Nrf2), a key regulator of the antioxidative response, is considered to be important as a therapeutic target for neurodegenerative diseases. We investigated the underlying mechanism of Nrf2-mediated neuroprotective effects against oxidative stress in the PC12 cell line by 7β-(3-ethyl-cis-crotonoyloxy)-1α-(2-methylbut...
Source: Redox Biology - July 5, 2018 Category: Biology Source Type: research

ROS-induced HSP70 promotes cytoplasmic translocation of high-mobility group box 1b and stimulates antiviral autophagy in grass carp kidney cells Cell Biology
In this study, we found that both grass carp reovirus (GCRV) infection and hydrogen peroxide (H2O2) treatment induced the accumulation of reactive oxygen species (ROS) in C. idella kidney cells and stimulate autophagy. Suppressing ROS accumulation with N-acetyl-l-cysteine significantly inhibited GCRV-induced autophagy activation and enhanced GCRV replication. Although ROS-induced autophagy, in turn, restricted GCRV replication, further investigation revealed that the multifunctional cellular protein high-mobility group box 1b (HMGB1b) serves as a heat shock protein 70 (HSP70)–dependent, pro-autophagic protein in grass ca...
Source: Journal of Biological Chemistry - November 9, 2018 Category: Chemistry Authors: Youliang Rao, Quanyuan Wan, Hang Su, Xun Xiao, Zhiwei Liao, Jianfei Ji, Chunrong Yang, Li Lin, Jianguo Su Tags: Immunology Source Type: research

Sufficiency of hypoxia-inducible 2-oxoglutarate dioxygenases to block chemical oxidative stress-induced differentiation of human embryonic stem cells
Publication date: Available online 12 December 2018Source: Stem Cell ResearchAuthor(s): Eirini Koutsouraki, Steve Pells, Paul A. De SousaAbstractHypoxia benefits undifferentiated pluripotent stem cell renewal, and 2-oxoglutarate (2OG) dioxygenases have been implicated in pluripotent stem cell induction and renewal. We show in human embryonic stem cells (hESC) that an ambient oxygen-induced oxidative stress response elicited by culture in a hypoxic atmosphere (0.5% O2) correlates with the expression of 2OG dioxygenases, which oxidise DNA (TET1, 2, 3) and histone H3 (KDM4C), the former reflected by elevation in genomic 5-hyd...
Source: Stem Cell Research - December 12, 2018 Category: Stem Cells Source Type: research

Chalcone flavokawain A attenuates TGF- β1-induced fibrotic pathology via inhibition of ROS/Smad3 signaling pathways and induction of Nrf2/ARE-mediated antioxidant genes in vascular smooth muscle cells.
In this study, flavokawain A (FKA, 2-30 μM), a naturally occurring chalcone in kava extracts, was evaluated for its anti-fibrotic and antioxidant properties in TGF-β1-stimulated vascular smooth muscle (A7r5) cells, as well as its underlying molecular mechanism of action. Immunofluorescence data showed down-regulated F-actin expression with FKA treatment in TGF-β1-stimulated A7r5 cells. Western blotting demonstrated that FKA treatment suppressed the expression of α-SMA and fibronectin proteins under TGF-β1 stimulation. Findings from wound-healing and invasion experiments showed that FKA inhibits TGF-β1-mediated migra...
Source: J Cell Mol Med - December 13, 2018 Category: Molecular Biology Authors: Hseu YC, Yang TY, Li ML, Rajendran P, Mathew DC, Tsai CH, Lin RW, Lee CC, Yang HL Tags: J Cell Mol Med Source Type: research

Hydrogen sulfide exposure triggers chicken trachea inflammatory injury through oxidative stress-mediated FOS/IL8 signaling
Publication date: 15 April 2019Source: Journal of Hazardous Materials, Volume 368Author(s): Menghao Chen, Xiaojing Li, Qunxiang Shi, Ziwei Zhang, Shiwen XuAbstractHydrogen sulfide (H2S) is well known to cause irritation and damage to airway following inhalation, but the mechanism by which H2S contributes to airway toxicity is unclear. In order to assess the respiratory toxicity of H2S inhalation in chicken trachea, we investigated the change of oxidative stress parameters, tracheal tissue structure and transcriptome profiles of chicken trachea exposed to H2S for 42 days. The results showed H2S exposure induced oxidative st...
Source: Journal of Hazardous Materials - January 24, 2019 Category: Environmental Health Source Type: research