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n-acetyl-cysteine

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https://www.readbyqxmd.com/read/29781282/evaluating-drug-induced-liver-injury-and-its-remission-via-discrimination-and-imaging-of-hclo-and-h2s-with-a-two-photon-fluorescent-probe
#1
Xiaoyun Jiao, Yongsheng Xiao, Yong Li, Muwen Liang, Xilei Xie, Xu Wang, Bo Tang
Drug-induced liver injury (DILI) has aroused wide concern. Finding new markers or indicators as well as detoxification molecules for DILI are of great significance and good application prospect, which can help develop effective preclinical screening methodology and corresponding treatment protocols. Herein, in this paper, DILI caused by antidepressant drugs of duloxetine and fluoxetine and its remission were evaluated by a two-photon fluorescent probe, RPC-1, through discriminating and imaging HClO and H2S simultaneously...
May 21, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29780252/chelerythrine-induced-cell-death-through-ros-dependent-er-stress-in-human-prostate-cancer-cells
#2
Songjiang Wu, Yanying Yang, Feiping Li, Lifu Huang, Zihua Han, Guanfu Wang, Hongyuan Yu, Haiping Li
Introduction: Prostate cancer is the most common noncutaneous cancer and the second leading cause of cancer-related mortality worldwide and the third in USA in 2017. Chelerythrine (CHE), a naturalbenzo[c]phenanthridine alkaloid, formerly identified as a protein kinase C inhibitor, has also shown anticancer effect through a number of mechanisms. Herein, effect and mechanism of the CHE-induced apoptosis via reactive oxygen species (ROS)-mediated endoplasmic reticulum (ER) stress in prostate cancer cells were studied for the first time...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29773887/varacin-1-a-novel-analog-of-varacin-c-induces-p53-independent-apoptosis-in-cancer-cells-through-ros-mediated-reduction-of-xiap
#3
Jing Zhou, Wen-Li Li, Zi-Xuan Wang, Nai-Yuan Chen, Yue Tang, Xiao-Xiao Hu, Jing-Huan Deng, Yixin Lu, Guo-Dong Lu
Varacin C is a promising anticancer agent and possesses acid-promoted and photo-induced DNA-damaging activities. In this study, we synthesized an analog varacin-1 (VCA-1) and examined its anticancer potentials. The results demonstrated that VCA-1 caused dose-dependent apoptotic cell death in cancer cells. Note that this action is independent of p53 status, because VCA-1 induced similar levels of apoptosis in two different panels of cell lines (HCT116 p53- wild-type vs. HCT116 p53-knockout colon cancer cells, and p53-expressing U2OS vs...
May 17, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29770192/safety-and-efficacy-of-n-acetyl-cysteine-for-prophylaxis-of-ventilator-associated-pneumonia-a-randomized-double-blind-placebo-controlled-clinical-trial
#4
Mojtaba Sharafkhah, Ali Abdolrazaghnejad, Nader Zarinfar, Abolfazl Mohammadbeigi, Ali Massoudifar, Sahand Abaszadeh
Ventilator-associated-pneumonia (VAP) is characterized by morbidity, mortality, and prolonged length of stay in intensive care unit (ICU). The present study aimed to examine the effect of N-acetyl-cysteine (NAC) in preventing VAP in patients hospitalized in ICU. We performed a prospective, randomized, double-blind, placebo-controlled trial of 60 mechanically ventilated patients at high risk of developing VAP. NAC (600 mg/twice daily) and placebo (twice daily) were administered to NAC group ( n = 30) and control group ( n = 30), respectively, through the nasogastric tube in addition to routine care...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29769783/trichotillomania-ranging-from-ritual-to-illness-and-as-a-rare-clinical-manifestation-of-frontotemporal-dementia-review-of-literature-and-case-report
#5
Thomas Gregor Issac, Ashay Vivek Telang, Sadanandavalli Retnaswami Chandra
Frontotemporal dementia (FTD) is the most common form of dementia in the younger age group and often exists with comorbid obsessions and compulsions in up to 80% of the patients. Trichotillomania or compulsive "hair-pulling" disorder is a rare manifestation of FTD and is a poorly evaluated symptom in this condition. The release of "grooming functions" due to frontal disinhibition is often attributed to the evolutionary perspective; however, recent findings also implicate the role of neurotransmitter dysfunction...
March 2018: International Journal of Trichology
https://www.readbyqxmd.com/read/29753208/mechanisms-of-acetaminophen-induced-liver-injury-and-its-implications-for-therapeutic-interventions
#6
REVIEW
Mingzhu Yan, Yazhen Huo, Shutao Yin, Hongbo Hu
Acetaminophen (APAP) overdose is the leading cause of drug-induced acute liver failure in many developed countries. Mitochondrial oxidative stress is considered to be the predominant cellular event in APAP-induced liver injury. Accordingly, N-acetyl cysteine, a known scavenger of reactive oxygen species (ROS), is recommended as an effective clinical antidote against APAP-induced acute liver injury (AILI) when it is given at an early phase; however, the narrow therapeutic window limits its use. Hence, the development of novel therapeutic approaches that can offer broadly protective effects against AILI is clearly needed...
April 22, 2018: Redox Biology
https://www.readbyqxmd.com/read/29752770/one-carbon-cycle-support-rescues-sperm-damages-in-experimentally-induced-varicocele-in-rats
#7
Parisa Mohammadi, Hassan Hassani Bafrani, Marziyeh Tavalaee, Maurizio Dattilo, Mohammad Hossein Nasr-Esfahani
OBJECTIVES: To demonstrate that micronutrients in support of the one-carbon cycle and glutathione synthesis are effective in improving sperm damage following surgical varicocele in rats and that this effect is achieved without suffering a rebound reductive stress as seen with oral antioxidants. MATERIALS AND METHODS: Surgical varicocele was induced in adult male Wistar rats and resulted in significant damage to testis and sperm cells measured 2 and 4 months post-surgery...
May 11, 2018: BJU International
https://www.readbyqxmd.com/read/29746502/potential-involvement-of-the-18-kda-translocator-protein-and-reactive-oxygen-species-in-apoptosis-of-thp-1-macrophages-induced-by-sonodynamic-therapy
#8
Xin Sun, Shuyuan Guo, Wei Wang, Zhengyu Cao, Juhua Dan, Jiali Cheng, Wei Cao, Fang Tian, Wenwu Cao, Ye Tian
Sonodynamic therapy (SDT) with exogenous protoporphyrin IX (PpIX) or endogenous PpIX derived from 5-aminolevulinic acid (ALA) has been carried out to produce apoptotic effects on macrophages, indicating a potential treatment methodology for atherosclerosis. Our previous studies have found that mitochondria damage by reactive oxygen species (ROS) plays a major role in the SDT-induced apoptosis. This study aimed at investigating the potential involvement of the mitochondrial 18 kDa translocator protein (TSPO) and ROS in the pro-apoptotic effects of SDT on THP-1 macrophages...
2018: PloS One
https://www.readbyqxmd.com/read/29745443/myricetin-induced-oxidative-stress-suppresses-murine-t-lymphocyte-activation
#9
Javad Ghassemi-Rad, Mahdis Maleki, Allison F Knickle, David W Hoskin
A number of polyphenolic compounds present in fruits and vegetables have the capacity to modulate immune responses; however, the impact of the common plant-derived flavonoid myricetin on T lymphocyte function has not been investigated. We show that myricetin inhibited mouse T lymphocyte activation by bead-immobilized anti-CD3 and anti-CD28 monoclonal antibodies, as indicated by a dose-dependent reduction in cell proliferation and decreased synthesis of interferon-γ, interleukin (IL)-2, IL-4, and IL-17 associated with different T helper cell subsets...
April 16, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29742465/myricetin-induced-apoptosis-of-triple-negative-breast-cancer-cells-is-mediated-by-the-iron-dependent-generation-of-reactive-oxygen-species-from-hydrogen-peroxide
#10
Allison Knickle, Wasundara Fernando, Anna L Greenshields, H P Vasantha Rupasinghe, David W Hoskin
Myricetin is a dietary phytochemical with anticancer activity; however, the effect of myricetin on breast cancer cells remains unclear. Here, we show that myricetin inhibited the growth of triple-negative breast cancer (TNBC) cells but was less inhibitory for normal cells. The effect of myricetin was comparable to epigallocatechin gallate and doxorubicin, and greater than resveratrol and cisplatin. Myricetin-treated TNBC cells showed evidence of early and late apoptosis/necrosis, which was associated with intracellular reactive oxygen species (ROS) accumulation, extracellular regulated kinase 1/2 and p38 mitogen-activated protein kinase activation, mitochondrial membrane destabilization and cytochrome c release, and double-strand DNA breaks...
May 6, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29738273/the-antipyretic-effect-of-paracetamol-occurs-independent-of-transient-receptor-potential-ankyrin-1-mediated-hypothermia-and-is-associated-with-prostaglandin-inhibition-in-the-brain
#11
Elahe Mirrasekhian, Johan L Å Nilsson, Kiseko Shionoya, Anders Blomgren, Peter M Zygmunt, David Engblom, Edward D Högestätt, Anders Blomqvist
The mode of action of paracetamol (acetaminophen), which is widely used for treating pain and fever, has remained obscure, but may involve several distinct mechanisms, including cyclooxygenase inhibition and transient receptor potential ankyrin 1 (TRPA1) channel activation, the latter being recently associated with paracetamol's propensity to elicit hypothermia at higher doses. Here, we examined whether the antipyretic effect of paracetamol was due to TRPA1 activation or cyclooxygenase inhibition. Treatment of wild-type and TRPA1 knockout mice rendered febrile by immune challenge with LPS with a dose of paracetamol that did not produce hypothermia (150 mg/kg) but is known to be analgetic, abolished fever in both genotypes...
May 8, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29733744/dyslipidemia-associated-atherogenic-oxidized-lipids-induce-platelet-hyperactivity-through-phospholipase-c%C3%AE-2-dependent-reactive-oxygen-species-generation
#12
Martin Berger, Katie Wraith, Casey Woodward, Ahmed Aburima, Zaher Raslan, Matthew S Hindle, Julia Moellmann, Maria Febbraio, Khalid M Naseem
Oxidized low-density lipoprotein (oxLDL) and associated oxidized phosphocholine-headgroup phospholipids (oxPCs) activate blood platelets through ligation of the scavenger receptor CD36. Previously, we found that oxLDL stimulated phosphorylation of phospholipase Cγ2 (PLCγ2). However, the functional relevance of PLCγ2 phosphorylation in oxLDL-mediated platelet hyperactivity remained elusive. Here, we set out to explore the functional importance of PLCγ2 in oxLDL-mediated platelet activation using human and genetically modified murine platelets...
May 7, 2018: Platelets
https://www.readbyqxmd.com/read/29731195/urban-particulate-matter-in-air-pollution-penetrates-into-the-barrier-disrupted-skin-and-produces-ros-dependent-cutaneous-inflammatory-response-in-vivo
#13
Seon-Pil Jin, Zhenyu Li, Eun Kyung Choi, Serah Lee, Yoen Kyung Kim, Eun Young Seo, Jin Ho Chung, Soyun Cho
BACKGROUND: Particulate matter (PM) is an integral part of air pollution, which is a mixture of particles suspended in the air. Recently, it has been reported that PM is associated with increased risks of skin diseases, especially atopic dermatitis in children. However, it is unclear if PM directly goes into the skin and what mechanisms are involved in response to PM. OBJECTIVE: To see whether PM could penetrate into the barrier-disrupted skin, produce reactive oxygen species (ROS), and elicit an inflammatory response...
April 30, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29726290/alpha-lipoic-acid-in-obstetrics-and-gynecology
#14
Chiara Di Tucci, Mara Di Feliciantonio, Flaminia Vena, Carmela Capone, Michele Carlo Schiavi, Daniela Pietrangeli, Ludovico Muzii, Pierluigi Benedetti Panici
Alpha-Lipoic acid (ALA) is a natural antioxidant synthetized by plants and animals, identified as a catalytic agent for oxidative decarboxylation of pyruvate and α-ketoglutarate. In this review, we analyzed the action of ALA in gynecology and obstetrics focusing in particular on neuropathic pain and antioxidant and anti-inflammatory action. A comprehensive literature search was performed in PubMed and Cochrane Library for retrieving articles in English language on the antioxidant and anti-inflammatory effects of ALA in gynecological and obstetrical conditions...
May 4, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29715519/oxidative-stress-contributes-to-fracture-cast-induced-inflammation-and-pain-in-a-rat-model-of-complex-regional-pain-syndrome
#15
Tian-Zhi Guo, Tzuping Wei, Ting-Ting Huang, Wade S Kingery, John David Clark
Clinical evidence suggests vitamin C (Vit C) may protect against the development of complex regional pain syndrome (CRPS) after fracture and/or surgery. Tibia fracture followed by 4 weeks cast immobilization (fracture/cast) in rats results in nociceptive, vascular, and bone changes resembling clinical CRPS. In the present study, fracture/cast rats were treated with the oxidative stress inhibitors Vit C, N-acetyl cysteine (NAC) or 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPOL) to examine their effects on CRPS-related nociceptive and vascular changes...
April 28, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29713542/systematic-review-of-antioxidant-types-and-doses-in-male-infertility-benefits-on-semen-parameters-advanced-sperm-function-assisted-reproduction-and-live-birth-rate
#16
Ahmad Majzoub, Ashok Agarwal
Objective: To explore the current evidence concerning the effect of oral antioxidant supplementation on various male fertility outcomes, as antioxidants are widely available compounds that are commonly used for the treatment of male infertility. Materials and methods: PubMed, Medline and Cochrane electronic databases were searched according to a modified Preferred Reporting Items for Systemic Reviews and Meta-Analyses (PRISMA) guidelines looking for studies investigating the effect of antioxidant therapy on infertile men...
March 2018: Arab Journal of Urology
https://www.readbyqxmd.com/read/29709909/induction-of-apoptosis-by-citrus-unshiu-peel-in-human-breast-cancer-mcf-7-cells-involvement-of-ros-dependent-activation-of-ampk
#17
Min Yeong Kim, Hyun Hwang Bo, Eun Ok Choi, Da He Kwon, Hong Jae Kim, Kyu Im Ahn, Seon Yeong Ji, Jin-Woo Jeong, Shin-Hyung Park, Su-Hyun Hong, Gi-Young Kim, Cheol Park, Heui-Soo Kim, Sung-Kwon Moon, Seok-Joong Yun, Wun Jae Kim, Yung Hyun Choi
The fruit of Citrus unshiu MARKOVICH used for various purposes in traditional medicine has various pharmacological properties including antioxidant, anti-inflammatory, and antibacterial effects. Recently, the possibility of anti-cancer activity of the extracts or components of this fruit has been reported; however, the exact mechanism has not yet been fully understood. In this study, we evaluated the anti-proliferative effect of water extract of C. unshiu peel (WECU) on human breast cancer MCF-7 cells and investigated the underlying mechanism...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29708299/arsenic-trioxide-induces-growth-inhibition-and-death-in-human-pulmonary-artery-smooth-muscle-cells-accompanied-by-mitochondrial-o2%C3%A2-increase-and-gsh-depletion
#18
Woo Hyun Park, Bo Ran Han, Hyun Kyung Park, Sung Zoo Kim
Arsenic trioxide (ATO; As2 O3 ) induces cell death in various cells via oxidative stress. Expose to chronic arsenic is involved in the development of vascular diseases. However, little is known about the cytotoxic effects of ATO on human normal vascular smooth muscle cells (VSMCs). Thus, in this study, we investigated the effects of ATO on cell growth and death in human pulmonary artery smooth muscle (HPASM) cells in relation to reactive oxygen species (ROS) and glutathione (GSH) levels. ATO treatment decreased the growth of HPASM cells with an IC50 of ∼30-50 μM at 24 h, and ATO induced HPASM cell death via apoptosis or necrosis dependent on the doses of it at this time...
April 30, 2018: Environmental Toxicology
https://www.readbyqxmd.com/read/29705635/an-in-vitro-analysis-of-the-rat-c6-glioma-cells-to-elucidate-the-linear-alkylbenzene-sulfonate-induced-oxidative-stress-and-consequent-g2-m-phase-cell-cycle-arrest-and-cellular-apoptosis
#19
Anubha Shukla, Sunil P Trivedi
Linear alkylbenzene Sulphonate (LAS) is the anionic surfactant component of globally consumed detergents. Exposure of sub-inhibitory fractions viz., 1/10th (T1), 1/5th (T2), and 1/2.5th (T3) of IC50 for 48 h, of LAS (5 μM, 10 μM, and 20 μM, respectively) to viable C6 glioma cells of rat, besides imparting morphological alterations leads to gross cytotoxicity. Expression of the damaged DNA coupled with cleaved PARP (p < 0.05; p < 0.01 and p < 0.001) were recorded for T1, T2 and T3, respectively...
April 21, 2018: Chemosphere
https://www.readbyqxmd.com/read/29698568/n-acetyl-cysteine-nac-treatment-restores-early-phase-fracture-healing-in-ethanol-fed-rats
#20
Michael J Duryee, Anand Dusad, Carlos D Hunter, Kusum K Kharbanda, Joseph D Bruenjes, Karen C Easterling, Justin C Siebler, Geoffrey M Thiele, Dennis A Chakkalakal
BACKGROUND: Fracture healing in alcoholics is delayed and often associated with infections resulting in prolonged rehabilitation. It has been reported that binge drinking of alcohol increases oxidative stress and delays fracture healing in rats, which is prevented by treatment with the antioxidant n-acetyl cysteine (NAC). Oxidative stress is a significant factor in pathologies of various organs resulting from chronic alcoholism. Therefore, we hypothesize that treatment with NAC reduces oxidative stress and restores fracture healing in chronic alcoholics...
April 26, 2018: Alcoholism, Clinical and Experimental Research
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