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arsenic trioxide

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https://www.readbyqxmd.com/read/28612524/-effect-of-cell-autophagy-on-the-apoptosis-of-hepatocellular-carcinoma-cells-induced-by-arsenic-trioxide
#1
Yang Li, Shi-Yan Gu, Zun-Zhen Zhang
OBJECTIVES: To determine the effect of autophagy on the apoptosis of hepatocellular carcinoma cells induced by arsenic trioxide (ATO). METHODS: Hepatocellular carcinoma HepG2 cells were exposed to ATO. The cell viability was detected by MTT after adjustments for autophagy agonist (Rap) and autophagy inhibitor (3-MA). The autophagosome was observed under electronic microscope. The autophagy related proteins (LC3 and Beclin1) were detected by immunofluorescence. The cell apoptosis was measured by flow cytometry...
March 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28611353/determination-of-arsenic-and-lead-in-single-hair-strands-by-laser-ablation-inductively-coupled-plasma-mass-spectrometry
#2
Ruxin Luo, Xiaohong Su, Weicong Xu, Sujing Zhang, Xianyi Zhuo, Dong Ma
The purpose of this study was to develop matrix-matched hair standards and a LA-ICP-MS technique for determination of the As and Pb in a single human hair using single spot scan mode. These results could subsequently be used to infer when the element entered the body. This study was conducted in two parts. First, a method was developed and validated for the elemental analysis of hair by LA-ICP-MS. A calibration strategy in LA-ICP-MS was developed using prepared matrix-matched laboratory hair standards doped with analytes of interest at a defined concentration...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28597167/predictors-of-thrombohemorrhagic-early-death-in-children-and-adolescents-with-t-15-17-positive-acute-promyelocytic-leukemia-treated-with-atra-and-chemotherapy
#3
Oussama Abla, Raul C Ribeiro, Anna Maria Testi, Pau Montesinos, Ursula Creutzig, Lillian Sung, Giancarlo Di Giuseppe, Derek Stephens, James H Feusner, Bayard L Powell, Henrik Hasle, Gertjan J L Kaspers, Luciano Dalla-Pozza, Alvaro Lassaletta, Martin S Tallman, Franco Locatelli, Dirk Reinhardt, Francesco Lo-Coco, Johann Hitzler, Miguel A Sanz
Clinical trials on childhood acute promyelocytic leukemia (APL) report early death (ED) rates of 3-8%, but predictors of thrombohemorrhagic (TH)-ED are not well understood. In a retrospective study, we aimed to determine the incidence and predictors of TH-ED in childhood APL. Data were analyzed from children and adolescents with t(15;17)-positive APL (n = 683) who started treatment with all-trans retinoic acid (ATRA) and chemotherapy in different international studies. Demographic data; initial white blood cell (WBC), peripheral blood (PB) blast, and platelet counts; hemoglobin value; coagulation parameters; morphologic variant (M3 or M3v); and induction details were analyzed...
June 8, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28587418/synergistic-inhibition-of-leukemia-wehi-3-cell-growth-by-arsenic-trioxide-and-hedyotis-diffusa-willd-extract-in-vitro-and-in-vivo
#4
Yu-Jui Kuo, Yan-Jin Liu, Tzong-Der Way, Su-Yin Chiang, Jaung-Geng Lin, Jing-Gung Chung
Arsenic trioxide (ATO) is clinically used to treat acute promyelocytic leukemia (APL); however, the therapeutic dose of ATO may prompt critical cardiac side effects. Combination therapy may be used to improve the therapeutic efficiency. To evaluate this possibility, the present study determined the combined effects of Hedyotis diffusa Willd (HDW) extract and ATO in leukemic WEHI-3 cells. The results demonstrated that co-treatment of HDW with ATO resulted in a synergistic augmentation of cytotoxicity in cells at the concentration tested...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28586751/direct-separation-of-arsenic-and-antimony-oxides-by-high-temperature-filtration-with-porous-feal-intermetallic
#5
Huibin Zhang, Xinli Liu, Yao Jiang, Lin Gao, Linping Yu, Nan Lin, Yuehui He, C T Liu
A temperature-controlled selective filtration technology for synchronous removal of arsenic and recovery of antimony from the fume produced from reduction smelting process of lead anode slimes was proposed. The chromium (Cr) alloyed FeAl intermetallic with an asymmetric pore structure was developed as the high-temperature filter material after evaluating its corrosive resistance, structural stability and mechanical properties. The results showed that porous FeAl alloyed with 20wt.% Cr had a long term stability in a high-temperature sulfide-bearing environment...
May 26, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28583123/arsenic-affects-inflammatory-cytokine-expression-in-gallus-gallus-brain-tissues
#6
Xiao Sun, Ying He, Ying Guo, Siwen Li, Hongjing Zhao, Yu Wang, Jingyu Zhang, Mingwei Xing
BACKGROUND: The heavy metal arsenic is widely distributed in nature and posses a serious threat to organism's health. However, little is known about the arsenic-induced inflammatory response in the brain tissues of birds and the relationship and mechanism of the inflammatory response. The purpose of this study was to explore the effects of dietary arsenic on the expression of inflammatory cytokines in the brains of Gallus gallus. RESULTS: Seventy-two 1-day-old male Hy-line chickens were divided into a control group, a low arsenic trioxide (As2O3)-treated (7...
June 5, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28575066/combined-application-of-arsenic-trioxide-and-lithium-chloride-augments-viability-reduction-and-apoptosis-induction-in-human-rhabdomyosarcoma-cell-lines
#7
Sabine B Schleicher, Julian J Zaborski, Rosa Riester, Natascha Zenkner, Rupert Handgretinger, Torsten Kluba, Frank Traub, Karen A Boehme
Rhabdomyosarcomas (RMS) are the most prevalent soft tissue sarcomas affecting children and adolescents. Despite intensive treatment consisting of multimodal chemotherapy and surgery RMS patients diagnosed with metastatic disease expect long term survival rates of only 20%. Often multidrug resistance arises upon initial response emphasizing the need for new therapeutic drugs to improve treatment efficiency. Previously, we demonstrated the efficacy of the FDA approved drug arsenic trioxide (ATO) specifically inhibiting viability and clonal growth as well as inducing cell death in human RMS cell lines of different subtypes...
2017: PloS One
https://www.readbyqxmd.com/read/28565807/arsenic-trioxide-increases-expression-of-secreted-frizzled-related-protein-1-gene-and-inhibits-the-wnt-%C3%AE-catenin-signaling-pathway-in-jurkat-cells
#8
Yan Wang, Zunsong Wang, Hong Li, Wenwei Xu, Lin Dong, Yan Guo, Saran Feng, Kehong Bi, Chuansheng Zhu
The aim of the present study was to investigate the demethylation effect of arsenic trioxide (As2O3) on the secreted frizzled-related protein 1 (SFRP1) gene and its ability to inhibit the Wingless-type MMTV integration site family (WNT) pathway in Jurkat cells. Methylation-specific polymerase chain reaction was used to examine the CpG island methylation status of the SFRP1 gene in leukemia cell lines. In addition, the effects on Jurkat cells of treatment with different concentrations of As2O3 for 48 h were investigated...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28550664/-synergistic-lethal-effect-of-combined-treatment-of-arsenic-trioxide-and-aclacinomycin-on-human-acute-myeloid-leukemia-cell-line-kg-1a
#9
Y B Ye, X J Xu, Y H Chen, M W Zhang, D F Qiu, Z W Guo, H Q He
Objective: To investigate the synergistic lethal effect and mechanism of arsenic trioxide (ATO) and aclacinomycin (ACM) on human acute myeloid leukemia cell line KG-1a. Methods: Colony-forming assay was used to detect the proliferation of KG-1a cells treated with different concentration of ATO and ACM. Compusyn software was used to analyze the synergistic effect of ATO and ACM. Flow cytometry and Wright's staining were used to analyze the apoptotic rate of KG-1a cells induced by combined treatment of ATO and ACM...
April 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28547870/survival-without-peripheral-neuropathy-after-massive-acute-arsenic-poisoning-treated-by-2-3-dimercaptopropane-1-sulphonate
#10
P-H Lu, J-C Tseng, C-K Chen, C-H Chen
WHAT IS KNOWN AND OBJECTIVE: Massive acute arsenic poisoning is rare yet potentially life-threatening. 2,3-dimercaptopropane-1-sulphonate (DMPS) appears to have the appropriate chelating property. However, clinical experience on the use of DMPS in massive arsenic poisoning is limited. CASE DESCRIPTION: A 37-year-old woman attempted suicide by ingesting 37.5 g of arsenic trioxide. DMPS was promptly initiated based on history and clinical symptoms. The patient recovered completely, with no complications or side effects of the therapy...
May 25, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28533572/%C3%AE-lipoic-acid-mitigates-arsenic-induced-hematological-abnormalities-in-adult-male-rats
#11
Sonali Ghosh, Raghwendra Mishra, Sagnik Biswas, Rupak K Bhadra, Prabir K Mukhopadhyay
BACKGROUND: Arsenic toxicity is a major global health problem and exposure via contaminated drinking water has been associated with hematological and other systemic disorders. The present investigation has been conducted in adult male rats to evaluate the protective ability of α-lipoic acid (ALA) against such hematological disorders. METHODS: Twenty-four adult male Wister rats (b.wt.130±10g) were grouped and accordingly group I (control) received the normal diet, group II (treated) was given arsenic orally for 28 consecutive days as arsenic trioxide (3 mg/kgbw/rat/day) whereas group III (supplemented) received the same dose of arsenic along with ALA (25 mg/kgbw/rat/day) as oral supplement...
May 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28525371/arsenic-trioxide-and-angiotensin-ii-have-inhibitory-effects-on-herg-protein-expression-evidence-for-the-role-of-pml-sumoylation
#12
Yu Liu, Duo Li, Dan Nie, Shang-Kun Liu, Fang Qiu, Mei-Tong Liu, Yuan-Yuan Li, Jia-Xin Wang, Yan-Xin Liu, Chang-Jiang Dong, Di Wu, Wei Tian, Jia Yang, Wei Mu, Jia-Tong Li, Dan Zhao, Xiao-Feng Wang, Wen-Feng Chu, Bao-Feng Yang
The human ether-a-go-go-related gene (HERG) channel is a novel target for the treatment of drug-induced long QT syndrome, which causes lethal cardiotoxicity. This study is designed to explore the possible role of PML SUMOylation and its associated nuclear bodies (NBs) in the regulation of HERG protein expression. Both arsenic trioxide (ATO) and angiotensin II (Ang II) were able to significantly reduce HERG protein expression, while also increasing PML SUMOylation and accelerating the formation of PML-NBs. Pre-exposure of cardiomyocytes to a SUMOylation chemical inhibitor, ginkgolic acid, or the silencing of UBC9 suppressed PML SUMOylation, subsequently preventing the downregulation of HERG induced by ATO or Ang II...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28521962/the-functional-roles-of-pml-nuclear-bodies-in-genome-maintenance
#13
REVIEW
Hae Ryung Chang, Anudari Munkhjargal, Myung-Jin Kim, Seon Young Park, Eunyoung Jung, Jae-Ha Ryu, Young Yang, Jong-Seok Lim, Yonghwan Kim
In the nucleus, there are several membraneless structures called nuclear bodies. Among them, promyelocytic leukemia nuclear bodies (PML-NBs) are involved in multiple genome maintenance pathways including the DNA damage response, DNA repair, telomere homeostasis, and p53-associated apoptosis. In response to DNA damage, PML-NBs are coalesced and divided by a fission mechanism, thus increasing their number. PML-NBs also play a role in repairing DNA double-strand breaks (DSBs) by homologous recombination (HR). Clinically, the dominant negative PML-RARα fusion protein expressed in acute promyelocytic leukemia (APL) inhibits the transactivation of downstream factors and disrupts PML function, revealing the tumor suppressor role of PML-NBs...
May 5, 2017: Mutation Research
https://www.readbyqxmd.com/read/28521025/mechanism-of-as2o3-induced-action-potential-prolongation-and-using-hips-cms-to-evaluate-the-rescue-efficacy-of-drugs-with-different-rescue-mechanism
#14
Meng Yan, Lifang Feng, Yanhui Shi, Junnan Wang, Yan Liu, Fengmei Li, Baoxin Li
Arsenic trioxide (As2O3) has been verified as a breakthrough in the management of acute promyelocytic leukemia in recent decades. However, cardiotoxicity, especially long QT syndrome (LQTS) has become the most important issue during As2O3 treatment. The characterized mechanisms behind this adverse effect are inhibition of cardiac hERG channel trafficking and increase of cardiac calcium currents. In our study, we found a new pathway underlying As2O3-induced cardiotoxicity that As2O3 accelerates lysosomal degradation of hERG on plasma membrane after using brefeldin A (BFA) to block protein trafficking...
May 17, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28516389/microenvironmental-scenario-of-the-bone-marrow-of-inorganic-arsenic-exposed-experimental-mice
#15
Jacintha Archana Pereira, Sujata Law
Exposure to arsenic on a regular basis, mainly through drinking water, agricultural pesticide, and sometimes therapeutic dose, results in various diseases of different tissues including the bone marrow hematopoietic system. Hematopoiesis is a dynamic process by which bone marrow (BM) hematopoietic stem/progenitor cells (HSPCs) generate a relatively constant pool of functionally mature blood cells by the support of microenvironmental components. The present study has been aimed to understand stem cell microenvironmental status during arsenic toxicity and the consequent reflection of dysregulation involving the hematopoietic machinery in experimental mice...
May 17, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28510787/a-phase-ii-trial-of-arsenic-trioxide-and-temozolomide-in-combination-with-radiation-therapy-for-patients-with-malignant-gliomas
#16
Priya Kumthekar, Sean Grimm, James Chandler, Minesh Mehta, Maryanne Marymont, Robert Levy, Kenji Muro, Irene Helenowski, Katie McCarthy, Leanne Fountas, Jeffrey Raizer
Standard treatment for GBM is radiation (RT) and temozolomide (TMZ). Arsenic trioxide (ATO) is synergistic with RT based on several mechanisms of action previously identified, however not tested herein. The MTD of ATO, RT and TMZ was determined in a Phase I trial. We now present the combined Phase I/II data. Patients with newly diagnosed malignant gliomas were eligible for treatment. Patients were treated with RT (60 GY), TMZ (75 mg/m(2) daily × 42 days) and ATO 0.20 mg/kg daily in week 1 then twice a week ×5 weeks, after completing RT they were treated with TMZ 5/28 for up to 12 months...
May 16, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28507443/erratum-retinoic-acid-and-arsenic-trioxide-in-the-treatment-of-acute-promyelocytic-leukemia-current-perspectives-corrigendum
#17
(no author information available yet)
[This corrects the article on p. 1585 in vol. 10, PMID: 28352191.].
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28501332/inhibition-of-nicotinamide-phosphoribosyltransferase-and-depletion-of-nicotinamide-adenine-dinucleotide-contribute-to-arsenic-trioxide-suppression-of-oral-squamous-cell-carcinoma
#18
Xin Yue Wang, Jin Zhi Wang, Lu Gao, Fu Yin Zhang, Qi Wang, Ke Jian Liu, Bin Xiang
Emerging evidence suggests that increased nicotinamide phosphoribosyltransferase (NAMPT) expression is associated with the development and prognosis of many cancers, but it remains unknown regarding its role in oral squamous cell carcinoma (OSCC). In the present study, the results from tissue microarray showed that NAMPT was overexpressed in OSCC patients and its expression level was directly correlated with differential grades of cancer. Interestingly, treatment of OSCC cells with chemotherapy agent arsenic trioxide (ATO) decreased the levels of NAMPT protein and increased cellular death in an ATO dose- and time-dependent manner...
May 10, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28494415/studies-on-curative-efficacy-of-monoterpene-eugenol-on-anti-leukemic-drug-arsenic-trioxide-induced-cardiotoxicity
#19
Prakash Binu, Nellikunnath Priya, Surendran Abhilash, Radhakrishnan Chandraprabha Vineetha, Raveendran Harikumaran Nair
BACKGROUND: Arsenic trioxide (As2O3) is emerging as a frontline agent for the treatment of acute promyelocytic leukemia (APL) but the therapeutic application is limited by its toxicity. QT prolongation, torsades de pointes and sudden cardiac death have been implicated in the As2O3 therapy. So eugenol is a monoterpene compound is well known for its antioxidant properties and protective effect on the cardiovascular system. OBJECTIVE: In this study, the cardioprotective effect of eugenol on cardiac electrical conductivity, tissue electrolytes, myocardial markers, antioxidant system, lipid peroxidation and nitric oxide production was investigated in male Wistar rats treated with arsenic trioxide...
July 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28492552/all-trans-retinoic-acid-and-arsenic-trioxide-fail-to-derepress-the-monocytic-differentiation-driver-irf8-in-acute-promyelocytic-leukemia-cells
#20
XiangZhen Liu, Juan Chen, ShanHe Yu, Li Yan, HeZhou Guo, JianMin Dai, Wu Zhang, Jiang Zhu
All-trans retinoic acid (ATRA) and/or arsenic trioxide (ATO) administration leads to granulocytic maturation and/or apoptosis of acute promyelocytic leukemia (APL) cells mainly by targeting promyelocytic leukemia/retinoic acid receptor alpha (PML/RARα). Yet, ~10-15% of APL patients are not cured by ATRA- and ATO-based therapies, and a potential failure of ATRA and ATO in completely reversing PML/RARα-driven oncogenic alterations has not been comprehensively examined. Here we characterized the in vivo primary responses of dysregulated genes in APL cells treated with ATRA and ATO using a GFP-labeled APL model...
May 11, 2017: Cell Death & Disease
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