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n-acetyl-cysteine

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https://www.readbyqxmd.com/read/27926485/axitinib-induces-senescence-associated-cell-death-and-necrosis-in-glioma-cell-lines-the-proteasome-inhibitor-bortezomib-potentiates-axitinib-induced-cytotoxicity-in-a-p21-waf-cip1-dependent-manner
#1
Maria Beatrice Morelli, Consuelo Amantini, Massimo Nabissi, Claudio Cardinali, Matteo Santoni, Giovanni Bernardini, Angela Santoni, Giorgio Santoni
Glioblastoma is associated with a poor overall survival despite new treatment advances. Antiangiogenic strategies targeting VEGF based on tyrosine kinase inhibitors (TKIs) are currently undergoing extensive research for the treatment of glioma.Herein we demonstrated that the TKI axitinib induces DNA damage response (DDR) characterized by γ-H2AX phosphorylation and Chk1 kinase activation leading to G2/M cell cycle arrest and mitotic catastrophe in U87, T98 and U251 glioma cell lines. Moreover, we found that p21(Waf1/Cip1) increased levels correlates with induction of ROS and senescence-associated cell death in U87 and T98 cell lines, which are reverted by N-acetyl cysteine pretreatment...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27917341/the-effect-of-n-acetyl-cysteine-nac-on-aluminum-phosphide-poisoning-inducing-cardiovascular-toxicity-a-case-control-study
#2
Fakhreddin Taghaddosinejad, Esmaeil Farzaneh, Mahdi Ghazanfari-Nasrabad, Nastaran Eizadi-Mood, Morteza Hajihosseini, Omid Mehrpour
BACKGROUND: Aluminum phosphide (AlP) is a very effective indoor and outdoor pesticide. We investigated the effects of N-acetyl cysteine (NAC) on the survival time, hemodynamics, and cardiac biochemical parameters at various time intervals in some cases of AlP poisoning. METHODS: This research was a case-control study to evaluate 63 AlP poisoned patients during 2010-2012. Patients with cardiovascular complications of AlP to be treated with intravenous NAC plus conventional treatment were considered as the case group and compared with patients who did not receive NAC...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27915491/the-effects-of-changes-in-glutathione-levels-through-exogenous-agents-on-intracellular-cysteine-content-and-protein-adduct-formation-in-chronic-alcohol-treated-vl17a-cells
#3
Mathan Kumar S, Madhumitha Haridoss, Kavitha Swaminathan, Ramesh Kumar G, Dahn L Clemens, Aparajita Dey
Alcohol mediated liver injury is associated with changes in the level of the major cellular antioxidant glutathione (GSH). It is interesting to investigate if the changes in intracellular GSH level through exogenous agents affect the intracellular cysteine content and the protein adduct formation indicative of oxidative insult in chronic alcohol treated liver cells. In VL-17A cells treated with 2 mM N- acetyl cysteine (NAC) or 0.1 mM ursodeoxycholic acid (UDCA) plus 100 mM ethanol, an increase in cysteine concentration which was accompanied by decreases in hydroxynonenal (HNE) and glutathionylated protein adducts were observed...
December 4, 2016: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/27913221/role-of-the-inflammasome-in-acetaminophen-induced-liver-injury-and-acute-liver-failure
#4
REVIEW
Benjamin L Woolbright, Hartmut Jaeschke
Drug-induced acute liver failure carries a high morbidity and mortality rate. Acetaminophen overdose is the number one cause of acute liver failure and remains a major problem in Western medicine. Administration of N-acetyl cysteine is an effective antidote when given before the initial rise in toxicity; however, many patients present to the hospital after this stage occurs. As such, treatments which can alleviate late-stage acetaminophen-induced acute liver failure are imperative. While the initial mechanisms of toxicity are well described, a debate has occurred recently in the literature over whether or not there exists a second phase of injury, mediated by inflammatory processes...
November 29, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27908781/heme-oxygenase-1-metabolite-biliverdin-not-iron-inhibits-porcine-reproductive-and-respiratory-syndrome-virus-replication
#5
Angke Zhang, Hong Duan, Na Li, Lijuan Zhao, Fengxing Pu, Baicheng Huang, Chunyan Wu, Yuchen Nan, Taofeng Du, Yang Mu, Qin Zhao, Yani Sun, Gaiping Zhang, Julian A Hiscox, En-Min Zhou, Shuqi Xiao
Porcinereproductiveandrespiratorysyndromevirus (PRRSV) causes significant economic losses to the pork industry worldwide. Previously, we demonstrated that heme oxygenase-1 (HO-1) interferes with PRRSV replication. To elucidate the mechanisms involved, here we assess whether the HO-1 downstream metabolites biliverdin (BV) and/or iron mediate the HO-1 antiviral effect. We demonstrate a BV concentration-dependent suppression of PRRSV replication and show that virions are not directly inactivated by BV. Additionally, BV or N-acetyl cysteine (NAC) significantly reduced reactive oxygen species (ROS) in PRRSV-infected MARC-145 cells; however, because NAC did not reduce viral load, the BV antiviral effect is independent of decreased ROS levels...
November 28, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27907022/nicotine-induces-podocyte-apoptosis-through-increasing-oxidative-stress
#6
Xiqian Lan, Rivka Lederman, Judith M Eng, Seyedeh Shadafarin Marashi Shoshtari, Moin A Saleem, Ashwani Malhotra, Pravin C Singhal
BACKGROUND: Cigarette smoking plays an important role in the progression of chronic kidney disease (CKD). Nicotine, one of the major components of cigarette smoking, has been demonstrated to increase proliferation of renal mesangial cells. In this study, we examined the effect of nicotine on podocyte injury. METHODS: To determine the expression of nicotinic acetylcholine receptors (nAChR subunits) in podocytes, cDNAs and cell lysate of cultured human podocytes were used for the expression of nAChR mRNAs and proteins, respectively; and mouse renal cortical sections were subjected to immunofluorescant staining...
2016: PloS One
https://www.readbyqxmd.com/read/27900814/effects-of-intratracheal-exposure-of-2-chloroethyl-ethyl-sulfide-cees-on-the-activation-of-ccaat-enhancer-binding-protein-c-ebp-and-its-protection-by-antioxidant-liposome
#7
Somdutta Sinha Roy, Shyamali Mukherjee, Salil K Das
Exposure of 2-chloroethyl ethyl sulfide (CEES) to guinea pigs causes lung injury by infiltration of neutrophils in interstitial lung spaces. A unique MAPK-regulated transcription factor, C/EBP (CCAAT-enhancer-binding protein), regulates the expression of intracellular adhesion molecule-1 (ICAM-1), involved in recruiting neutrophils in lung. The present study was to determine if CEES exposure causes activation of C/EBP, in particular the predominant β-isoform and if so whether it can be prevented by intratracheal delivery of an antioxidant liposome containing N-acetyl cysteine and tocopherols...
November 30, 2016: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/27900412/demethyleneberberine-alleviates-inflammatory-bowel-disease-in-mice-through-regulating-nf-%C3%AE%C2%BAb-signaling-and-t-helper-cell-homeostasis
#8
Ying-Ying Chen, Rui-Yan Li, Mei-Jing Shi, Ya-Xing Zhao, Yan Yan, Xin-Xin Xu, Miao Zhang, Xiao-Tong Zhao, Yu-Bin Zhang
OBJECTIVE: The activation of NF-κB signaling and unbalance of T-helper (Th) cells have been reported to play a key role in the pathogenesis of colitis. Cortex Phellodendri Chinensis (CPC) is commonly used to treat inflammation and diarrhea. Demethyleneberberine (DMB), a component of CPC, was reported to treat alcoholic liver disease as a novel natural mitochondria-targeted antioxidant in our previous study. In this study, we investigated whether DMB could protect against dextran sulfate sodium (DSS)-induced inflammatory colitis in mice by regulation of NF-κB pathway and Th cells homeostatis...
November 29, 2016: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/27898405/n-acetyl-cysteine-attenuated-the-deleterious-effects-of-advanced-glycation-end-products-on-the-kidney-of-non-diabetic-rats
#9
Karina Thieme, Karolline S Da Silva, Nelly T Fabre, Sergio Catanozi, Maria Beatriz Monteiro, Daniele Pereira Santos-Bezerra, Juliana Martins Costa-Pessoa, Maria Oliveira-Souza, Ubiratan F Machado, Marisa Passarelli, Maria Lucia Correa-Giannella
AIM: To assess the renal effects of chronic exposure to advanced glycation end-products (AGEs) in the absence of diabetes and the potential impact of concomitant treatment with the antioxidant N-acetyl cysteine (NAC). METHODS: Wistar rats received intraperitoneally 20 mg/kg/day of albumin modified (AlbAGE) or not (AlbC) by advanced glycation for 12 weeks and oral NAC (600mg/L; AlbAGE+NAC and AlbC+NAC, respectively). Biochemical, urinary and renal morphological analyses; carboxymethyl-lysine (CML, an AGE), CD68 (macrophage infiltration), and 4-hydroxynonenal (4-HNE, marker of oxidative stress) immunostaining; intrarenal mRNA expression of genes belonging to pathways related to AGEs (Ager, Ddost, Nfkb1), renin-angiotensin system (Agt, Ren, Ace), fibrosis (Tgfb1, Col4a1), oxidative stress (Nox4, Txnip), and apoptosis (Bax, Bcl2); and reactive oxidative species (ROS) content were performed...
November 30, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27895157/beneficial-effects-of-myo-inositol-oxygenase-deficiency-in-cisplatin-induced-aki
#10
Rajesh K Dutta, Vinay K Kondeti, Isha Sharma, Navdeep S Chandel, Susan E Quaggin, Yashpal S Kanwar
Overexpression of the proximal tubular enzyme myo-inositol oxygenase (MIOX) induces oxidant stress in vitro However, the relevance of MIOX to tubular pathobiology remains enigmatic. To investigate the role of MIOX in cisplatin-induced tubular AKI, we generated conditional MIOX-overexpressing transgenic (MIOX-TG) mice and MIOX-knockout (MIOX(-/-)) mice with tubule-specific MIOX overexpression or knockout, respectively. Compared with cisplatin-treated wild-type (WT) mice, cisplatin-treated MIOX-TG mice had even greater increases in urea, creatinine, and KIM-1 levels and more tubular injury and apoptosis, but these effects were attenuated in cisplatin-treated MIOX(-/-) mice...
November 28, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27894373/cognitive-effects-of-adjunctive-n-acetyl-cysteine-in-psychosis
#11
M Rapado-Castro, S Dodd, A I Bush, G S Malhi, D R Skvarc, Z X On, M Berk, O M Dean
BACKGROUND: Cognitive deficits are predictors of functional outcome in patients with psychosis. While conventional antipsychotics are relatively effective on positive symptoms, their impact on negative and cognitive symptoms is limited. Recent studies have established a link between oxidative stress and neurocognitive deficits in psychosis. N-acetylcysteine (NAC), a glutathione precursor with glutamatergic properties, has shown efficacy on negative symptoms and functioning in patients with schizophrenia and bipolar disorder, respectively...
November 29, 2016: Psychological Medicine
https://www.readbyqxmd.com/read/27891708/n-acetyl-cysteine-in-the-treatment-of-trichotillomania
#12
Katlein França, Torello Lotti
No abstract text is available yet for this article.
November 27, 2016: Dermatologic Therapy
https://www.readbyqxmd.com/read/27882116/in-vitro-and-in-vivo-assessment-of-high-dose-vitamin-c-against-murine-tumors
#13
Guoping Wang, Tao Yin, Yongsheng Wang
Vitamin C is widely used in clinical settings and is well known for its safety. Previous studies have shown the efficacy of intravenous vitamin C; however, intratumoral delivery of vitamin C has yet to be attempted. In the present study, the biological effects of high-dose vitamin C on tumor cells were investigated in vitro by using the MTT assay and flow cytometry. When administered in vitro, high-dose vitamin C inhibited the proliferation of murine colon and breast cancer cells, and induced tumor cell apoptosis...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27875950/targeted-delivery-of-cabazitaxel-by-conjugation-to-albumin-peg-folate-nanoparticles-using-a-cysteine-acrylate-linker-and-simple-synthesis-conditions
#14
Mohammad Kazem Khoeeniha, Mehdi Esfandyari-Manesh, Hossein Behrouz, Mohsen Amini, Behrang Shiri Varnamkhasti, Fatemeh Atyabi, Rassoul Dinarvand
Cabazitaxel (CBZ) is a new taxane approved by the FDA for treatment of castration-resistant prostate cancer not responding to docetaxel. However, CBZ is not a suitable substrate for p-glycoprotein 60, an efflux pump which transports anticancer drugs out of malignant cells and is therefore a promising drug for treatment of multidrug resistant tumors. Similar to other taxanes, the presence of Tween 80 in the CBZ formulation shows that it is insoluble in water. Therefore, to increase the solubility and circulation time, a CBZ-albumin conjugate was synthesized...
November 22, 2016: Current Drug Delivery
https://www.readbyqxmd.com/read/27856348/a-novel-quinone-derived-from-5-hydroxyindoleacetic-acid-reacts-with-protein-possible-participation-of-oxidation-of-serotonin-and-its-metabolite-in-the-development-of-atherosclerosis
#15
Yoji Kato, Kota Oki, Naoko Suga, Shigeki Ono, Akari Ishisaka, Yoko Miura, Satoshi Kanazawa, Michitaka Naito, Noritoshi Kitamoto, Anthony J Kettle
The modification of 5-hydroxyindoleacetic acid (5HIAA) by myeloperoxidase with a xanthine oxidase system was investigated by chromatographic analyses. Two major products were identified as a dimer and quinone (indoleacetate dione) of 5HIAA. The formation of a quinone moiety was also confirmed by chemical trapping with o-phenylenediamine. In the presence of N-acetyl-cysteine (NAC), a quinone-NAC adduct was formed. When glyceraldehyde 3-phosphate dehydrogenase was exposed to the myeloperoxidase system with 5HIAA, quinone adducts were formed on the protein molecule...
November 14, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27854233/cysteine-supplementation-may-be-beneficial-in-a-subgroup-of-mitochondrial-translation-deficiencies
#16
Marina Bartsakoulia, Juliane S Mϋller, Aurora Gomez-Duran, Patrick Yu Wai Man, Veronika Boczonadi, Rita Horvath
BACKGROUND: Mitochondrial encephalomyopathies are severe, relentlessly progressive conditions and there are very few effective therapies available to date. We have previously suggested that in two rare forms of reversible mitochondrial disease (reversible infantile respiratory chain deficiency and reversible infantile hepatopathy) supplementation with L-cysteine can improve mitochondrial protein synthesis, since cysteine is required for the 2-thiomodification of mitochondrial tRNAs. OBJECTIVES: We studied whether supplementation with L-cysteine or N-acetyl-cysteine (NAC) results in any improvement of the mitochondrial function in vitro in fibroblasts of patients with different genetic forms of abnormal mitochondrial translation...
August 30, 2016: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/27843711/iron-overload-induced-death-of-osteoblasts-in-vitro-involvement-of-the-mitochondrial-apoptotic-pathway
#17
Qing Tian, Shilei Wu, Zhipeng Dai, Jingjing Yang, Jin Zheng, Qixin Zheng, Yong Liu
BACKGROUND: Iron overload is recognized as a new pathogenfor osteoporosis. Various studies demonstrated that iron overload could induce apoptosis in osteoblasts and osteoporosis in vivo. However, the exact molecular mechanisms involved in the iron overload-mediated induction of apoptosis in osteoblasts has not been explored. PURPOSE: In this study, we attempted to determine whether the mitochondrial apoptotic pathway is involved in iron-induced osteoblastic cell death and to investigate the beneficial effect of N-acetyl-cysteine (NAC) in iron-induced cytotoxicity...
2016: PeerJ
https://www.readbyqxmd.com/read/27832694/long-term-follow-up-of-sulfur-mustard-related-bronchiolitis-obliterans-treatment
#18
Hamidreza Abtahi, Soheil Peiman, Morteza Foroumandi, Enayat Safavi
Bronchiolitis obliterans (BO) is the most remarkable pulmonary sequels of war-related sulfur mustard inhalation. There is little if any data about long-term efficacy of associated BO treatment. Five years spirometric records of three groups of patients with obstructive pulmonary diseases (asthma, COPD, BO) and documented sulfur mustard inhalation were evaluated. The BO patients were treated with inhaled Seretide 125-250/25 (2 puffs BID), azithromycin (250 mg, three times/week) and N-acetylcysteine (1200-1800/day)...
September 2016: Acta Medica Iranica
https://www.readbyqxmd.com/read/27825965/effective-killing-of-cancer-cells-and-regression-of-tumor-growth-by-k27-targeting-sulfiredoxin
#19
Jiwon Kim, Gong-Rak Lee, Hojin Kim, You-Jin Jo, Seong-Eun Hong, Jiae Lee, Hye In Lee, Yeong-Su Jang, Seung-Hyun Oh, Hwa Jeong Lee, Ju-Seog Lee, Woojin Jeong
Cancer cells have been suggested to be more susceptible to oxidative damages and highly dependent on antioxidant capacity in comparison with normal cells, and thus targeting antioxidant enzymes has been a strategy for effective cancer treatment. Sulfiredoxin (Srx) is an enzyme that catalyzes the reduction of sulfinylated peroxiredoxins and thereby reactivates them. In this study we developed a Srx inhibitor, K27 (N-[7-chloro-2-(4-fluorophenyl)-4-quinazolinyl]-N-(2-phenylethyl)-β-alanine), and showed that it induces the accumulation of sulfinylated peroxiredoxins and oxidative stress, which leads to mitochondrial damage and apoptotic death of cancer cells...
November 5, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27825799/combination-of-2-deoxy-d-glucose-and-metformin-for-synergistic-inhibition-of-non-small-cell-lung-cancer-a-reactive-oxygen-species-and-p-p38-mediated-mechanism
#20
Xiao-Bin Hou, Ting-Hui Li, Zhi-Peng Ren, Yang Liu
Targeting metabolism of lung cancer cells is a promising methodology for the treatment of lung cancer. In this regard, 2-Deoxy d-glucose (2-dDG) has been reported to inhibit cell proliferation by intervening the glycolytic pathway. However, phase I clinical trial of 2-dDG demonstrated cardiac side effects at higher dosage. Metformin (Met), on the other hand, has been reported to improve pathological response to chemotherapy in non-small cell lung cancer (NSCLC) patients. In this study, we propose that combination therapy of 2-dDG with Met will demonstrate enhanced cytotoxicity than either compound alone...
November 5, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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