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https://www.readbyqxmd.com/read/29345355/effects-of-antioxidants-on-apoptosis-induced-by-dasatinib-and-nilotinib-in-k562-cells
#1
Sara Damiano, Serena Montagnaro, Maria Valeria Puzio, Lorella Severino, Ugo Pagnini, Marcella Barbarino, Daniele Cesari, Antonio Giordano, Salvatore Florio, Roberto Ciarcia
In clinical practice for the treatment of chronic myeloid leukemia, second generation of tyrosine kinase inhibitors such as Nilotinib (NIL) specific and potent inhibitor of the BCR/ABL kinase and Dasatinib (DAS) a inhibitor of BCR/ABL and Src family kinase were developed to clinically overcome imatinib resistance. In this study we wanted to test the ability of some antioxidants such Resveratrol (RES) or a new recombinant mitochondrial manganese containing superoxide dismutase (rMnSOD) or δ-tocotrienol (δ-TOCO) to interact with DAS and NIL on viability, reactive oxygen species (ROS) production, lipid peroxidation and apoptosis...
January 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29345296/vitamin%C3%A2-d-derivatives-potentiate-the-anticancer-and-anti-angiogenic-activity-of-tyrosine-kinase-inhibitors-in-combination-with-cytostatic-drugs-in-an-a549-non-small-cell-lung-cancer-model
#2
Ewa Maj, Beata Filip-Psurska, Magdalena Milczarek, Mateusz Psurski, Andrzej Kutner, Joanna Wietrzyk
Numerous in vitro and in vivo studies have demonstrated that calcitriol [1,25(OH)2D3] and different vitamin D analogs possess antineoplastic activity, regulating proliferation, differentiation and apoptosis, as well as angiogenesis. Vitamin D compounds have been shown to exert synergistic effects when used in combination with different agents used in anticancer therapies in different cancer models. The aim of this study was to evaluate the mechanisms of the cooperation of the vitamin D compounds [1,24(OH)2D3 (PRI‑2191) and 1,25(OH)2D3] with tyrosine kinase inhibitors (imatinib and sunitinib) together with cytostatics (cisplatin and docetaxel) in an A549 non-small cell lung cancer model...
February 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29344183/a-patient-with-chronic-myeloid-leukemia-and-situs-inversus-totalis-a-case-report
#3
Yunxia Sun, Xiaoli Li, Lijun Li, Huan Liu, Qian Xu, Bei Liu
In the present study, a case of chronic myeloid leukemia (CML) with complete situs inversus in a 68-year-old female patient was reported. The patient presented with general weakness, abdominal distension and tenderness in the right hypochondrium. A chest X-ray revealed a right-sided heart. Ultrasonography revealed situs inversus totalis. A bone marrow smear demonstrated CML in the accelerated phase. Imatinib mesylate was subsequently administered; the patient stopped taking imatinib mesylate following discharge from the hospital...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29342995/-pediatric-myeloid-neoplasms-associated-with-eosinophilia-and-platelet-derived-growth-factor-receptor-beta-gene-rearrangement-a-case-report-and-literature-review
#4
X Y Zhang, T F Liu, C W Li, Q H Li, X F Zhu
Objective: To investigate the clinical features and therapeutic strategies of childhood myeloid neoplasms associated with eosinophilia and platelet-derived growth factor receptor beta (PDGFRB) gene rearrangement. Methods: Clinical data of myeloid neoplasms associated with eosinophilia and t (1;5) (q21;q33) chromosomal translocation of PDGFRB gene rearrangement in a child hospitalized in Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences on May 2015 was collected and analyzed...
January 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29341147/genotype-and-risk-of-tumour-rupture-in-gastrointestinal-stromal-tumour
#5
K Boye, J-M Berner, I Hompland, Ø S Bruland, S Stoldt, K Sundby Hall, B Bjerkehagen, T Hølmebakk
BACKGROUND: Tumour rupture is a strong predictor of poor outcome in gastrointestinal stromal tumours (GISTs) of the stomach and small intestine. The objective was to determine whether tumour genotype was associated with risk of rupture. METHODS: Rupture was classified according to the definition proposed by the Oslo Sarcoma Group. Since January 2000, data were registered retrospectively for all patients at Oslo University Hospital undergoing surgery for localized GIST of the stomach or small intestine...
January 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29341047/german-guideline-for-idiopathic-pulmonary-fibrosis-update-on-pharmacological-therapies-2017
#6
Jürgen Behr, Andreas Günther, Francesco Bonella, Klaus Geißler, Dirk Koschel, Michael Kreuter, Antje Prasse, Nicolas Schönfeld, Helmut Sitter, Joachim Müller-Quernheim, Ulrich Costabel
Idiopathic pulmonary fibrosis (IPF) is a severe and often fatal disease with a median survival of 2 - 4 years after diagnosis. Since the publication of the German IPF guideline in 2013 new treatment trials have been published, necessitating an update of the pharmacological therapy of IPF. Different from the previous guideline, the GRADE system was discarded and replaced by the Oxford evidence classification system which allows a more differentiated judgement. The following pharmacological therapies were rated not suitable for the treatment of IPF patients (recommendation A; evidence 1-b): triple therapy with prednisolone, azathioprine and acetyl-cysteine; imatinib; ambrisentan; bosentan; macitentan...
January 16, 2018: Pneumologie
https://www.readbyqxmd.com/read/29339136/development-of-orally-applicable-combinatorial-drug-loaded-nanoparticles-for-the-treatment-of-fibrosarcoma
#7
Gulen Melike Demirbolat, Levent Altintas, Sukran Yilmaz, Ismail Tuncer Degim
Nanoparticulate systems have been receiving a significant attention especially for the treatment of cancer but one of the main hurdles is to produce these developed and high tech nanosystems in large quantities. Anticancer drug formulations are generally designed for parenteral administrations but oral administration is still the most convenient route. In this study, orally applicable nano-sized chitosan nanoparticles (NPs) were successfully prepared using Nano Spray Dryer. It is possible to produce these NPs in large quantities by simply increasing the processing time using the machine without changing any parameter...
January 12, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29338593/expression-and-role-of-granulocyte-macrophage-colony-stimulating-factor-receptor-gm-csfr-and-granulocyte-colony-stimulating-factor-receptor-g-csfr-on-ph-positive-acute-b-lymphoblastic-leukemia
#8
Yong Wu, Ming Tan, Mei-Ling Chen, Yuan-Zhong Chen
OBJECTIVE: We observed that ph + ALL patients administrated with recombinant human G-CSF (rhG-CSF) after intense chemotherapy have presented a trend of disease relapse. Thus, we aim to thoroughly investigate the expression and role of GM-CSFR and G-CSFR on ph + ALL patients. METHOD: SUP-B15, BALL-1 and primary leukemia cells were used in this study. Transcript levels were analyzed by quantitative PCR while cell viability was measured using a CCK-8 assay...
January 17, 2018: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/29336374/radiotherapy-for-gastrointestinal-stromal-tumors
#9
REVIEW
Emine Elif Ozkan
OBJECTIVE: Gastrointestinal stromal tumors (GISTs) are rare mesenchymal tumors of the gastrointestinal tract, which frequently cause intraabdominal metastases. The current standard of care is surgery for localized cases, and adjuvant imatinib is recommended for tumors with a high risk of recurrence. To date, radiotherapy has not been commonly accepted as a part of multimodality treatment approach other than palliation. However, recently published case reports and some small series suggest that radiotherapy is a valuable option for controlling locally progressive, drug-resistant disease...
January 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29334307/regorafenib-regresses-an-imatinib-resistant-recurrent-gastrointestinal-stromal-tumor-gist-with-a-mutation-in-exons-11-and-17-in-a-patient-derived-orthotopic-xenograft-pdox-nude-mouse-model
#10
Kentaro Miyake, Kei Kawaguchi, Tasuku Kiyuna, Masuyo Miyake, Kentaro Igarashi, Zhiying Zhang, Takashi Murakami, Yunfeng Li, Scott D Nelson, Irmina Elliott, Tara Russell, Arun Singh, Yukihiko Hiroshima, Masashi Momiyama, Ryusei Matsuyama, Takashi Chisima, Itaru Endo, Fritz C Eilber, Robert M Hoffman
Gastrointestinal stromal tumor (GIST) is a rare type of sarcoma. The aim of this study was to determine drug sensitivity for a regionally-recurrent case of GIST using a patient-derived orthotopic xenograft (PDOX) model. The PDOX model was established in the anterior wall of the stomach. GIST PDOX models were randomized into 5 groups of 6 mice each when the tumor volume reached 60 mm3: G1, control group; G2, imatinib group (oral administration (p.o.), daily, for 3 weeks); G3, sunitinib group (p.o., daily, for 3 weeks); G4, regorafenib (p...
January 15, 2018: Cell Cycle
https://www.readbyqxmd.com/read/29334300/the-impact-of-early-molecular-response-in-children-and-adolescents-with-chronic-myeloid-leukemia-treated-with-imatinib-a-single-center-study-from-china
#11
Haigang Shao, Zhao Zeng, Jiannong Cen, Jun Zhang, Shuxiao Bai, Chunxiao Wu, Yanlei Gong, Yong Wang, Huiying Qiu, Suning Chen, Jinlan Pan
Chronic myeloid leukemia (CML) is rare among children and adolescents. The early molecular response (EMR) is an important prognostic significance for adult CML patients. This study explored the impact of EMR on the prognosis in 40 children and adolescents with CML-CP treated with imatinib (IM). Our results showed that a high proportion of patients failed to achieve the BCR-ABL1/ABL1 International Scale (IS) ≤ 10% at 3 months. Children with a BCR-ABL1/ABL1 ≤ 10% at 3 months and <1% at 6 months increased the rate of achieving complete cytogenetic response (CCyR) and/or major molecular response (MMR) at 12 months compared to those with BCR-ABL1/ABL1 > 10%...
January 15, 2018: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29327917/peptide-based-photoelectrochemical-cytosensor-using-a-hollow-tio2-eg-znin2s4-co-sensitized-structure-for-ultrasensitive-detection-of-early-apoptotic-cells-and-drug-evaluation
#12
Rong Wu, Gao-Chao Fan, Li-Ping Jiang, Jun-Jie Zhu
The ability to rapidly detect apoptotic cells and accurately evaluate therapeutic effects is significant in cancer research. To address this target, a biocompatible, ultrasensitive photoelectrochemical (PEC) cytosensing platform was developed based on electrochemically reduced graphene (EG)/ZnIn2S4 co-sensitized TiO2 coupled with specific recognition between apoptotic cells and phosphatidylserine (PS)-binding peptide (PSBP). In this strategy, HL-60 cells were selected as a model, and C005, nilotinib and imatinib were selected as apoptosis inducers to show cytosensing performance...
January 12, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29324374/ileal-gist-presenting-with-bacteremia-and-liver-abscess-a-case-report-and-review-of-literature
#13
Marina Gorelik, Braulio Sabates, Adel Elkbuli, Tony Dunne
INTRODUCTION: Small intestine gastrointestinal stromal tumors can infrequently present with intra-abdominal abscess, perforation, obstruction or fistula. Tumor-small intestine fistula is a rare phenomenon and occurs as a result of GISTs' propensity to cause mucosal ulceration. This allows bacteria from the gut to gain access to the systemic circulation and predisposes the patient to bacteremia and pyogenic liver abscess. PRESENTATION OF CASE: We present a case of a 63-year-old female whose initial symptoms included fever, nausea, vomiting and right upper quadrant pain...
December 27, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29321163/antitumor-effects-of-blocking-protein-neddylation-in-t315i-bcr-abl-leukemia-cells-and-leukemia-stem-cells
#14
Chang Liu, Danian Nie, Juan Li, Xin Du, Yuhong Lu, Yangqiu Li, Jingfeng Zhou, Yanli Jin, Jingxuan Pan
Imatinib (IM) revolutionized the treatment of chronic myeloid leukemia (CML) but drug resistance and disease recurrence remain a challenge. In this study, we suggest a novel strategy based on blocking protein neddylation to address BCR-ABL point mutations and leukemia stem cells (LSCs) that lie at the root of IM-resistant recurrences. Based on the finding that the NEDD8-activating enzyme subunit NAE1 is overexpressed in CML cells, we hypothesized that the function of certain neddylation-dependent protein substrates might be targeted to therapeutic ends in IM-resistant CML cells and LSCs...
January 10, 2018: Cancer Research
https://www.readbyqxmd.com/read/29316665/towards-comprehension-of-the-abcb1-p-glycoprotein-role-in-chronic-myeloid-leukemia
#15
REVIEW
Raquel C Maia, Flavia C Vasconcelos, Paloma S Souza, Vivian M Rumjanek
Abstract: The introduction of imatinib (IM), a BCR-ABL1 tyrosine kinase inhibitor (TKI), has represented a significant advance in the first-line treatment of chronic myeloid leukemia (CML). However, approximately 30% of patients need to discontinue IM due to resistance or intolerance to this drug. Both resistance and intolerance have also been observed in treatment with the second-generation TKIs-dasatinib, nilotinib, and bosutinib-and the third-generation TKI-ponatinib. The mechanisms of resistance to TKIs may be BCR-ABL1-dependent and/or BCR-ABL1-independent...
January 7, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29316372/can-therapeutic-drug-monitoring-increase-the-safety-of-imatinib-in-gist-patients
#16
Wei Zhuang, Jing-Dun Xie, Shan Zhou, Zhi-Wei Zhou, Yi Zhou, Xiao-Wei Sun, Xiu-Hong Yuan, Min Huang, Si Liu, Shuang Xin, Qi-Biao Su, Hai-Bo Qiu, Xue-Ding Wang
Imatinib at 400 mg daily is the standard treatment for patients affected with CML and GIST. The intervariability in plasma concentration is very significant. In many reports, a good therapeutic effect is attributed to an adequate concentration of Imatinib. However, few studies have been conducted to investigate the association between plasma concentration and side effects. Besides, no upper concentration limit of Imatinib plasma concentration detection has been established. The correlation of Imatinib trough concentrations (Cmin ) with adverse effects (AEs) was described here...
January 7, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29315500/long-term-outcome-of-dasatinib-first-line-treatment-in-gastrointestinal-stromal-tumor-a-multicenter-2-stage-phase-2-trial-swiss-group-for-clinical-cancer-research-56-07
#17
Michael Montemurro, Angela Cioffi, Julien Dômont, Piotr Rutkowski, Arnaud D Roth, Roger von Moos, Roman Inauen, Maud Toulmonde, Roger O Burkhard, Claudio Knuesli, Sebastian Bauer, Philippe Cassier, Heike Schwarb, Axel Le Cesne, Dieter Koeberle, Daniela Bärtschi, Daniel Dietrich, Christine Biaggi, John Prior, Serge Leyvraz
BACKGROUND: Tyrosine kinase inhibitors (TKIs) have improved the outcome of patients with gastrointestinal stromal tumors (GISTs), but most patients eventually develop resistance and progress. Dasatinib is a potent inhibitor of BCR-ABL, KIT, and SRC family kinases as well as imatinib-resistant cells. In GISTs, response evaluation is routinely done using computed tomography (CT) and 18 F-fluorodeoxyglucose positron emission tomography coupled to CT (FDG-PET/CT) for early response assessment and outcome prediction...
January 9, 2018: Cancer
https://www.readbyqxmd.com/read/29312652/tyrosine-kinase-inhibitor-sensitive-pdgfr%C3%AE-mutations-in-gist-two-cases-and-review-of-the-literature
#18
Pieter A Boonstra, Jourik A Gietema, Albert J H Suurmeijer, Matthew R Groves, Fernando de Assis Batista, Ed Schuuring, Anna K L Reyners
Gastrointestinal stromal tumors (GISTs) are rare mesenchymal malignancies of the gastrointestinal tract. Most GISTs harbor a c-KIT (80%) or a PDGFRα (10%) mutation that leads to constitutive activation of the tyrosine kinase receptor. Response to treatment with tyrosine kinase inhibitors (TKIs) is dependent on mutational status of the tumor. The most common mutation in PDGFRα, D842V, is known to be imatinib resistant. Almost all other PDGFRα mutations are imatinib sensitive. We describe two patients with a PDGFRα exon 18 mutated GIST responding to treatment with TKIs...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29310833/myeloid-neoplasm-with-eosinophilia-associated-with-isolated-extramedullary-fip1l1-pdgfra-rearrangement
#19
Talal Hilal, Veena Fauble, Rhett P Ketterling, Katalin Kelemen
Myeloid neoplasms with eosinophilia associated with PDGFRA rearrangement are very responsive to tyrosine kinase inhibitors (TKIs). Herein, we report a case of a 53-year-old man with eosinophilia and a well-differentiated extramedullary myeloid tumor with evidence of FIP1L1/PDGFRA rearrangement by fluorescent in situ hybridization in the extramedullary tissue. His bone marrow evaluation revealed a hypercellular marrow with eosinophilia but without evidence of a FIP1L1/PDGFRA rearrangement. The patient was treated with imatinib at a dose of 100 mg daily and responded with normalization of his peripheral eosinophil count...
January 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29310342/efficacy-and-safety-of-regorafenib-for-advanced-gastrointestinal-stromal-tumor-after-failure-with-imatinib-and-sunitinib-treatment-a-meta-analysis
#20
Zhenan Zhang, Tao Jiang, Wensheng Wang, Daxun Piao
AIMS: This meta-analysis aimed to evaluate the safety and efficacy of regorafenib as a treatment for patients with advanced (metastatic and/or unresectable) gastrointestinal stromal tumor (AGIST) after developing resistance to imatinib and sunitinib. METHODS: A literature search of databases such as PubMed, Embase, and Cochrane library was conducted up to February 2017. The pooled percentages and the corresponding 95% confidence intervals (CIs) were calculated using the Stata 11...
December 2017: Medicine (Baltimore)
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