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Drug: Acetylcysteine

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Total 193 results found since Jan 2013.

Angiotensin II Decreases Endothelial Nitric Oxide Synthase Phosphorylation via AT1R Nox/ROS/PP2A Pathway
In this study, we reported that AngII/AT1R-mediated activated protein phosphatase 2A (PP2A) downregulated endothelial nitric oxide synthase (eNOS) phosphorylation via Nox/ROS pathway. AngII treatment reduced the levels of phosphorylation of eNOS Ser1177 and nitric oxide (NO) content along with phosphorylation of PP2Ac (PP2A catalytic subunit) Tyr307, meanwhile increased the PP2A activity and ROS production in human umbilical vein endothelial cells (HUVECs). These changes could be impeded by AT1R antagonist candesartan (CAN). The pretreatment of 10−8 M PP2A inhibitor okadaic acid (OA) reversed the levels of eNOS Ser1177 a...
Source: Frontiers in Physiology - September 29, 2020 Category: Physiology Source Type: research

The role of the voltage-gated potassium channel, Kv2.1 in prostate cancer cell migration.
Abstract Voltage-gated potassium (Kv) channels are involved in many important cellular functions and play pivotal roles in cancer progression. The expression level of Kv2.1 was observed to be higher in the highly metastatic prostate cancer cells (PC-3), specifically in their membrane, than in immortalized prostate cells (WPMY-1 cells) and comparatively less metastatic prostate cancer cells (LNCaP and DU145 cells). However, Kv2.1 expression was significantly decreased when the cells were treated with anti-oxidants, such as N-acetylcysteine or ascorbic acid, implying that the highly expressed Kv2.1 could detect reac...
Source: BMB Reports - January 7, 2021 Category: Biochemistry Authors: Park HW, Song MS, Sim HJ, Ryu PD, Lee SY Tags: BMB Rep Source Type: research

The role of the voltage-gated potassium channel, Kv2.1 in prostate cancer cell migration
BMB Rep. 2021 Jan 7:5184. Online ahead of print.ABSTRACTVoltage-gated potassium (Kv) channels are involved in many important cellular functions and play pivotal roles in cancer progression. The expression level of Kv2.1 was observed to be higher in the highly metastatic prostate cancer cells (PC-3), specifically in their membrane, than in immortalized prostate cells (WPMY-1 cells) and comparatively less metastatic prostate cancer cells (LNCaP and DU145 cells). However, Kv2.1 expression was significantly decreased when the cells were treated with anti-oxidants, such as N-acetylcysteine or ascorbic acid, implying that the hi...
Source: BMB Reports - January 7, 2021 Category: Biochemistry Authors: Hyun Woo Park Min Seok Song Hun Ju Sim Pan Dong Ryu So Yeong Lee Source Type: research

P53 mediates the stimulation of mitochondrial reactive oxygen species and suppression of 18F-FDG uptake and glycolysis in isoprenaline-treated H9C2 cardiomyocytes
Conclusions: These findings demonstrate that ISO treatment decreases cardiomyocyte 18F-FDG uptake by downregulating glycolytic flux and further reveals that ROS-p53 signaling plays a critical role in this metabolic response.
Source: Journal of Nuclear Medicine - May 18, 2021 Category: Nuclear Medicine Authors: Lee, J. H., Kim, D. H., Kim, M., Cho, Y. S., Jung, K.-H., LEE, K.-H. Tags: Cardiovascular Basic Science Source Type: research

Betulinic acid induces autophagy-dependent apoptosis via Bmi-1/ROS/AMPK-mTOR-ULK1 axis in human bladder cancer cells
Aging (Albany NY). 2021 Sep 12;13(undefined). doi: 10.18632/aging.203441. Online ahead of print.ABSTRACTBetulinic acid (BA), a pentacyclic triterpenoid isolated from tree bark, exhibits antitumor effects against solid malignancies and triggers autophagy and/or apoptosis in human cancer cells. Nonetheless, the relationship between autophagy and apoptosis and the potential modulatory actions of BA on autophagy-dependent bladder cancer cell death remain unclear. The present study showed that BA exposure significantly suppressed viability, proliferation, and migration of EJ and T24 human bladder cancer cells. These effects ref...
Source: Aging - September 12, 2021 Category: Biomedical Science Authors: Yan Zhang Ning He Xuejian Zhou Feifan Wang Hairong Cai Shih Han Huang Xianwu Chen Zhenghui Hu Xiaodong Jin Source Type: research

Cigarette Smoke Promotes Interleukin-8 Production in Alveolar Macrophages Through the Reactive Oxygen Species/Stromal Interaction Molecule 1/Ca2+ Axis
In conclusion, our study demonstrates that CSE-induced ROS production may increase the expression of STIM1 in macrophages, which further promotes the release of IL-8 by regulating Ca2+ entry. These data suggest that STIM1 may play a crucial role in CSE-induced ROS production and inflammation, and participate in the pathogenesis of COPD.
Source: Frontiers in Physiology - October 8, 2021 Category: Physiology Source Type: research

Anti-inflammatory and anti-fibrotic effects of modafinil in nonalcoholic liver disease
Biomed Pharmacother. 2021 Dec;144:112372. doi: 10.1016/j.biopha.2021.112372. Epub 2021 Oct 28.ABSTRACTSmall- and intermediate-conductance Ca2+-activated K+ channels, KCa2.3 and KCa3.1, are involved in cellular signaling processes associated with inflammation and fibrosis. KCa2.3 and KCa3.1 are upregulated by proinflammatory cytokines and profibrotic growth factors. Cyclic AMP, which downregulates KCa2.3 and KCa3.1, is elevated by modafinil in cells; accordingly, we investigated whether modafinil exerts anti-inflammatory and anti-fibrotic responses via KCa2.3- and KCa3.1-mediated pathways in high-fat diet (HFD)- or thioacet...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - November 19, 2021 Category: Drugs & Pharmacology Authors: Shinkyu Choi Ji Aee Kim Haiyan Li Seong-Eun Jo Huisu Lee Tae Hun Kim Minje Kim Seong-Jin Kim Suk Hyo Suh Source Type: research

Molecules, Vol. 27, Pages 1346: Mitochondrial ROS-Mediated Metabolic and Cytotoxic Effects of Isoproterenol on Cardiomyocytes Are p53-Dependent and Reversed by Curcumin
g-Han Lee Acute &beta;-adrenergic stimulation contributes to heart failure. Here, we investigated the role of p53 in isoproterenol (ISO)-mediated metabolic and oxidative stress effects on cardiomyocytes and explored the direct protective effects offered by the antioxidant nutraceutical curcumin. Differentiated H9C2 rat cardiomyocytes treated with ISO were assayed for glucose uptake, lactate release, and mitochondrial reactive oxygen species (ROS) generation. Survival was assessed by sulforhodamine B assays. Cardiomyocytes showed significantly decreased glucose uptake and lactate release, as well as increased ce...
Source: Molecules - February 16, 2022 Category: Chemistry Authors: Jin Hee Lee Da Hae Kim MinA Kim Kyung-Ho Jung Kyung-Han Lee Tags: Article Source Type: research

Upregulation of p67 < sup > phox < /sup > in response to ischemia/reperfusion is cardioprotective by increasing ZIP2 expression via STAT3
In conclusion, an increase of p67phox expression in response to Zn2+ is an intrinsic adaptive response to I/R and leads to cardioprotection against I/R by upregulating ZIP2 via STAT3.PMID:35296207 | DOI:10.1080/10715762.2022.2052057
Source: Free Radical Research - March 17, 2022 Category: Research Authors: Liang Zhao Rui Zhang Shuya Zhang Hualu Zhang Qing Yang Zhelong Xu Source Type: research

Hexavalent chromium induces centrosome amplification through ROS-ATF6-PLK4 pathway in colon cancer cells
In conclusion, our results suggest that hexavalent chromium induces CA via the ROS-ATF6-PLK4 pathway and provides molecular targets for inhibiting chromium-mediated CA, which may be useful for the assessment of CA in chromium-promoted tumorigenesis and cancer cell metastasis. This article is protected by copyright. All rights reserved.PMID:35293662 | DOI:10.1002/cbin.11791
Source: Cell Biology International - March 16, 2022 Category: Cytology Authors: Xue Kai Bian Jia Li Guo Si Xian Xu Ya Wen Han Shao Chin Lee Ji Zhong Zhao Source Type: research

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