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arsenic trioxide

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https://www.readbyqxmd.com/read/29214213/therapeutic-potential-of-arsenic-trioxide-ato-in-treatment-of-hepatocellular-carcinoma-role-of-oxidative-stress-in-ato-induced-apoptosis
#1
Erika B Dugo, Clement G Yedjou, Jacqueline J Stevens, Paul B Tchounwou
Hepatocellular carcinoma (HCC), the dominant form of primary liver cancer, is the sixth most common cancer in the world with more than 700,000 people diagnosed annually. Arsenic trioxide (ATO) has been shown to be a potent anticancer agent in various carcinomas, proving particularly effective in the clinical treatment of relapsed and refractory acute promyelocytic leukemia. However, its bioactivity and molecular mechanisms against HCC has not been fully studied. Using human HCC (HepG2) cells as a test model, we studied the effects of ATO and examined the role of oxidative stress (OS) and apoptosis in cytotoxicity...
2017: Annals of Clinical Pathology
https://www.readbyqxmd.com/read/29208170/ferula-gummosa-gum-induces-apoptosis-via-ros-mechanism-in-human-leukemic-cells
#2
Maliheh Moradzadeh, Hamid Reza Sadeghnia, Seyed Hadi Mousavi, Merat Mahmoodi, Azar Hosseini
Ferula species known for its oleo-resins that are recognized valuable industrial crops and food products. In this study, we examined the level of cellular oxidants, cytotoxicity, apoptosis and differentiation induced by oleo resin gum from Ferula gummosa (30-250 µg/mL), as well as Arsenic trioxide (50 µM, as positive control), in leukemic (NB4 and HL-60 cells) and normal polymorph nuclear cells during 72 h. Resazurin assay was used to determine cell viability following treatment with F. gummosa (30-250 µg/mL)...
November 30, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29207612/the-antitumor-effect-of-arsenic-trioxide-on-hepatocellular-carcinoma-is-enhanced-by-andrographolide
#3
Xuhua Duan, Tengfei Li, Xinwei Han, Jianzhuang Ren, Pengfei Chen, Hao Li, Shaojun Gong
High concentrations of arsenic trioxide (As2O3) are used to treat acute promyelocytic leukemia and solid tumors, with negative side effects to normal cells. Andrographolide is a traditional Chinese medicine that exerts anti-cancer, anti-inflammatory, anti-virus, and anti-diabetic effects. Here, we tested the effects of combined andrographolide with As2O3 against hepatocellular carcinoma (HCC). We found that by increasing apoptosis, andrographolide synergistically enhanced the anti-tumor effects of As2O3 in HepG2 cells in vitro and in vivo...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29206204/antioxidants-protect-against-arsenic-induced-mitochondrial-cardio-toxicity
#4
REVIEW
Clare Pace, Ruben Dagda, Jeff Angermann
Arsenic is a potent cardiovascular toxicant associated with numerous biomarkers of cardiovascular diseases in exposed human populations. Arsenic is also a carcinogen, yet arsenic trioxide is used as a therapeutic agent in the treatment of acute promyelotic leukemia (APL). The therapeutic use of arsenic is limited due to its severe cardiovascular side effects. Many of the toxic effects of arsenic are mediated by mitochondrial dysfunction and related to arsenic's effect on oxidative stress. Therefore, we investigated the effectiveness of antioxidants against arsenic induced cardiovascular dysfunction...
December 5, 2017: Toxics
https://www.readbyqxmd.com/read/29200694/pancreatitis-in-acute-promyelocytic-leukemia-drug-induced-or-differentiation-syndrome
#5
Dibyendu De, Uttam Kumar Nath, Prantar Chakrabarti
Acute promyelocytic leukemia (APL) constitutes about 15% of all acute myeloid leukemia patients and can now be treated even without any chemotherapy, with all-trans-retinoic acid (ATRA) and arsenic trioxide (ATO). Acute pancreatitis (AP) is a rare adverse event in APL, which is primarily reported to be secondary to hypertriglyceridemia. Here, we have reported AP developed in a patient of APL, during induction with ATRA and ATO, but it was not associated with hypertriglyceridemia. Rather, it was associated with respiratory distress and weight gain, coincidental leukocytosis, bilateral pleural effusion, and edematous pancreatitis without any necrosis...
July 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29164574/mechanism-of-as2o3-induces-apoptosis-of-glioma-u87-cells
#6
G-B Wang, J-H Liu, J Hu, K Xue
OBJECTIVE: To investigate the mechanism of arsenic trioxide (As2O3)-induced apoptosis of glioma cells. MATERIALS AND METHODS: U87 cells were treated by different concentrations of As2O3 (8 μmol/L, 6 μmol/L, 4 μmol/L, 2 μmol/L, 1 μmol/L and 0.5 μmol/L) for 24 h, 48 h and 72 h, respectively. Cell viability was detected by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, and the appropriate dosage and time were screened. Transferase-mediated deoxyuridine triphosphate-biotin nick end labeling (TUNEL) was used to stain cells, followed by an investigation on the apoptosis of cells...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29163777/dhx15-is-associated-with-poor-prognosis-in-acute-myeloid-leukemia-aml-and-regulates-cell-apoptosis-via-the-nf-kb-signaling-pathway
#7
Lili Pan, Yang Li, Hai-Ying Zhang, Yi Zheng, Xiao-Li Liu, Zheng Hu, Yi Wang, Jing Wang, Yuan-Hua Cai, Qiao Liu, Wan-Ling Chen, Ying Guo, Yuan-Mao Huang, Feng Qian, Li Jin, Jiucun Wang, Shao-Yuan Wang
The role of DHX15, a newly identified DEAH-box RNA helicase, in leukemogenesis remains elusive. Here, we identified a recurrent mutation in DHX15 (NM_001358:c.664C>G: p.(R222G)) in one familial AML patient and 4/240 sporadic AML patients. Additionally, DHX15 was commonly overexpressed in AML patients and associated with poor overall survival (OS) (P=0.019) and relapse-free survival (RFS) (P=0.032). In addition, we found a distinct expression pattern of DHX15. DHX15 was highly expressed in hematopoietic stem cells and leukemia cells but was lowly expressed in mature blood cells...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29159556/effects-of-arsenic-trioxide-on-inf-gamma-gene-expression-in-mrl-lpr-mice-and-human-lupus
#8
Hongye Hu, Enjiu Chen, Yongji Li, Xiaochun Zhu, Ting Zhang, Xiaofang Zhu
Arsenic trioxide (As2O3; ATO), a traditional Chinese medicine, is used to treat patients with acute promye-locytic leukemia, while its application for treatment of systemic lupus erythematosus (SLE) is still under evaluation. The high expression of INF-gamma (INF-γ) is a primary pathogenic factor in SLE. It is found that ATO can reduce INF-γ expression levels in lupus-prone mice, whereas it is not clear whether ATO has the same effect on SLE patients. Therefore, this study was to investigate the underlying mechanism of the effects of ATO on the expression of INF-γ in splenocytes of MRL/lpr mice and PBMCs of human lupus...
November 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29159499/redistribution-of-cell-cycle-by-arsenic-trioxide-is-associated-with-demethylation-and-expression-changes-of-cell-cycle-related-genes-in-acute-promyelocytic-leukemia-cell-line-nb4
#9
Saeed Hassani, Ali Khaleghian, Shahin Ahmadian, Shaban Alizadeh, Kamran Alimoghaddam, Ardeshir Ghavamzadeh, Seyed H Ghaffari
PML-RARα perturbs the normal epigenetic setting, which is essential to oncogenic transformation in acute promyelocytic leukemia (APL). Transcription induction and recruitment of DNA methyltransferases (DNMTs) by PML-RARα and subsequent hypermethylation are components of this perturbation. Arsenic trioxide (ATO), an important drug in APL therapy, concurrent with degradation of PML-RARα induces cell cycle change and apoptosis. How ATO causes cell cycle alteration has remained largely unexplained. Here, we investigated DNA methylation patterns of cell cycle regulatory genes promoters, the effects of ATO on the methylated genes and cell cycle distribution in an APL cell line, NB4...
November 20, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/29153291/structural-perturbation-by-arsenic-triggers-the-aggregation-of-hen-egg-white-lysozyme-by-promoting-oligomers-formation
#10
Neelakant Varma, Inderbhan Singh, Mohinder Singh Dahiya, Vijay Kumar Ravi, Satish Kumar
Arsenic trioxide is one of the most common metallic pollutants entering the food chain both by human activities and nature. Its entry inside the living organism through food, air and water results into the accumulation of heavy metal in several tissues which manifest several metabolic or hormonal disorders. Till now the effect of arsenic trioxide on protein misfolding and aggregation culminating into several neurodegenerative disorders is poorly understood. In the present study, we reveal the aggregation process of Hen Egg White Lysozyme (HEWL) in presence of arsenic trioxide (As2O3) at physiological conditions...
November 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29148003/prevalence-of-medical-adhesive-related-skin-injury-at-peripherally-inserted-central-catheter-insertion-site-in-oncology-patients
#11
Huihan Zhao, Yu He, Huiqiao Huang, Ying Ling, Xuemei Zhou, Qin Wei, Yonghong Lei, Yanping Ying
INTRODUCTION: The aim of our study was to identify the prevalence and risk factors of medical adhesive-related skin injuries (MARSI) at peripherally inserted central catheters (PICC) insertion site in oncology patients. METHODS: A cross-sectional observational study lasting two weeks was carried out in four inpatient departments. Skin assessment data and photographs of skin were collected during PICC maintenance. Other related information came from medical records...
November 8, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29143154/deciphering-the-molecular-events-during-arsenic-induced-transcription-signal-cascade-activation-in-cellular-milieu
#12
REVIEW
Harishkumar Madhyastha, Radha Madhyastha, Yuichi Nakajima, Masugi Maruyama
Anthropogenic sources of arsenic poses and creates unintentional toxico-pathological concerns to humans in many parts of the world. The understanding of toxicity of this metalloid, which shares properties of both metal and non-metal is principally structured on speciation types and holy grail of toxicity prevention. Visible symptoms of arsenic toxicity include nausea, vomiting, diarrhea and abdominal pain. In this review, we focused on the dermal cell stress caused by trivalent arsenic trioxide and pentavalent arsanilic acid...
November 15, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/29138840/low-dosage-of-arsenic-trioxide-inhibits-vasculogenic-mimicry-in-hepatoblastoma-without-cell-apoptosis
#13
Feng Zhang, Chun-Mei Zhang, Shu Li, Kun-Kun Wang, Bin-Bin Guo, Yao Fu, Lu-Yang Liu, Yu Zhang, Hai-Yu Jiang, Chang-Jun Wu
Hepatoblastoma (HB) is the most common type of pediatric liver malignancy, which predominantly occurs in young children (aged <5 years), and continues to be a therapeutic challenge in terms of metastasis and drug resistance. As a new pattern of tumor blood supply, vasculogenic mimicry (VM) is a channel structure lined by tumor cells rather than endothelial cells, which contribute to angiogenesis. VM occurs in a variety of solid tumor types, including liver cancer, such as hepatocellular carcinoma. The aim of the present study was to elucidate the effect of arsenic trioxide (As2O3) on VM...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29119387/a-new-etv6-ntrk3-cell-line-model-reveals-malat1-as-a-novel-therapeutic-target-a-short-report
#14
Suning Chen, Stefan Nagel, Bjoern Schneider, Haiping Dai, Robert Geffers, Maren Kaufmann, Corinna Meyer, Claudia Pommerenke, Kenneth S Thress, Jiao Li, Hilmar Quentmeier, Hans G Drexler, Roderick A F MacLeod
BACKGROUND: Previously, the chromosomal translocation t(12;15)(p13;q25) has been found to recurrently occur in both solid tumors and leukemias. This translocation leads to ETV6-NTRK3 (EN) gene fusions resulting in ectopic expression of the NTRK3 neurotropic tyrosine receptor kinase moiety as well as oligomerization through the donated ETV6-sterile alpha motif domain. As yet, no in vitro cell line model carrying this anomaly is available. Here we genetically characterized the acute promyelocytic leukemia (APL) cell line AP-1060 and, by doing so, revealed the presence of a t(12;15)(p13;q25)...
November 8, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/29111252/organic-matter-control-on-the-distribution-of-arsenic-in-lake-sediments-impacted-by-65years-of-gold-ore-processing-in-subarctic-canada
#15
Jennifer M Galloway, Graeme T Swindles, Heather E Jamieson, Michael Palmer, Michael B Parsons, Hamed Sanei, Andrew L Macumber, R Timothy Patterson, Hendrik Falck
Climate change is profoundly affecting seasonality, biological productivity, and hydrology in high northern latitudes. In sensitive subarctic environments exploitation of mineral resources led to contamination and it is not known how cumulative effects of resource extraction and climate warming will impact ecosystems. Gold mines near Yellowknife, Northwest Territories, subarctic Canada, operated from 1938 to 2004 and released >20,000t of arsenic trioxide (As2O3) to the environment through stack emissions...
October 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29110117/successful-treatment-of-acute-promyelocytic-leukemia-in-pregnancy-with-single-agent-all-trans-retinoic-acid
#16
REVIEW
Cordula M Nellessen, Viktor Janzen, Karin Mayer, Giulia Giovannini, Ulrich Gembruch, Peter Brossart, Waltraut M Merz
PURPOSE: The diagnosis of acute promyelocytic leukemia (APL) in pregnancy is an uncommon, life-threatening emergency. Choice of treatment and management of complications are challenging. METHODS: We report the case of a patient with diagnosis of APL at gestational age (GA) 24 + 4. We describe the interdisciplinary management during pregnancy and delivery and provide a 2-year follow-up. Existing reports on APL in pregnancy are summarized. RESULTS: Single-agent induction therapy with all-trans retinoic acid (ATRA) was started and resulted in normalization of blood cell counts after 32 days...
November 6, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29097844/ataxia-telangiectasia-and-rad3-related-atr-promyelocytic-leukemia-protein-pml-pathway-of-the-dna-damage-response-in-the-brain-of-rats-administered-arsenic-trioxide
#17
Ryo Watanabe, Kana Unuma, Kanako Noritake, Takeshi Funakoshi, Toshihiko Aki, Koichi Uemura
To examine the in vivo responses of promyelocytic leukemia protein (PML) to arsenic, rats (male, 6 weeks old, Sprague Dawley) were administered a single intraperitoneal dose of 5 mg/kg arsenic trioxide (ATO). The protein was examined in the heart, lung, liver, and brain 6 and 48 hours after administration: a significant response of PML was observed in the brain. Oxidative DNA modification was also observed in the brain as revealed by increased immunoreactivity to anti-8-hydroxy-2'-deoxyguanosine (8-OHdG) antibody...
October 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/29095437/metformin-ameliorates-arsenic-trioxide-hepatotoxicity-via-inhibiting-mitochondrial-complex-i
#18
Sunbin Ling, Qiaonan Shan, Peng Liu, Tingting Feng, Xuanyu Zhang, Penghui Xiang, Kangchen Chen, Haiyang Xie, Penghong Song, Lin Zhou, Jimin Liu, Shusen Zheng, Xiao Xu
Arsenic trioxide (ATO) is a well-accepted chemotherapy agent in managing promyelocytic leukemia. ATO often causes severe health hazards such as hepatotoxicity, dermatosis, neurotoxicity, nephrotoxicity and cardiotoxicity. The production of reactive oxygen species, (ROS) play a significant role in ATO-induced hepatotoxicity. The oral hypoglycemic drug, metformin, is considered to be a potential novel agent for chemoprevention in the treatment of cancer. Moreover, metformin has also been shown to have hepatoprotective effects...
November 2, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29075064/role-of-arsenic-trioxide-in-the-management-of-aplastic-anemia
#19
Gaurav Prakash, Uday Yanamandra, Alka Khadwal, Neelam Varma, Subhash Varma, Pankaj Malhotra
Aplastic anemia is a common problem in the developing world with therapeutic challenges as most of the patients are non-affording to standard care owing to resource constraints. We present the results of an open label single arm, non-randomized, single center, prospective phase II trial of the compassionate use of arsenic trioxide in patients refractory to ATG or unable to afford the standard of care therapy. The study was prematurely terminated at eighth week due to non-response in 100% of patients and death in two patients...
December 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/29072394/evaluation-on-efficacy-and-safety-of-arsenic-trioxide-plus-transcatheter-arterial-chemoembolization-versus-transcatheter-arterial-chemoembolization-alone-for-unresectable-primary-liver-cancer
#20
Haitao Yang, Sijing Zhou, Ruifen Shen, Shuimei Luo, Lina Li, Heng Lin, Huijuan Chen, Ziyuan Liao, Wanzun Lin, Xianhe Xie
Currently, some clinical trials of arsenic trioxide (As203) plus transcatheter arterial chemoembolization (TACE) in the treatment of unresectable primary liver cancer (PLC) had been conducted, but the results were controversial. Therefore, we performed a meta-analysis on 14 clinical trials (1076 cases) to evaluate efficacy and safety of As203 plus TACE versus TACE alone for unresectable PLC. The primary end points included objective response rate (ORR), karnofsky performance score (KPS) improvement rate, and 1-year survival rate...
October 26, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
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