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chronic myelogenous leukemia

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https://www.readbyqxmd.com/read/29777449/potential-of-bacillus-subtilis-lipopeptides-in-anti-cancer-i-induction-of-apoptosis-and-paraptosis-and-inhibition-of-autophagy-in-k562-cells
#1
Haobin Zhao, Lu Yan, Xiaoguang Xu, Chunmei Jiang, Junling Shi, Yawen Zhang, Li Liu, Shuzhen Lei, Dongyan Shao, Qingsheng Huang
The lipopeptide iturin from Bacillus subtilis has been found to have a potential inhibitory effect on breast cancer, alveolar adenocarcinoma, renal carcinoma, and colon adenocarcinoma. In this study, the potential of B. subtilis lipopeptides (a mixture of iturin homologues, concentration of 42.75%) to inhibit chronic myelogenous leukemia was evaluated using K562 myelogenous leukemia cells. The results showed that the lipopeptides could completely inhibit the growth of K562 at 100 μM, with an IC50 value of 65...
May 9, 2018: AMB Express
https://www.readbyqxmd.com/read/29771146/nanosized-ethanol-based-malleable-liposomes-of-cytarabine-to-accentuate-transdermal-delivery-formulation-optimization-in-vitro-skin-permeation-and-in-vivo-bioavailability
#2
Rakesh Raj, Pooja Mongia Raj, Alpana Ram
Cytarabine is a pyrimidine nucleoside analog used predominantly for acute myeloid leukemia (AML) and also for other indications, including acute lymphocytic leukemia, chronic myelogenous leukemia, and lymphoma by parenteral route due to its low oral bioavailability. Parenteral administration requires constant plasma level, monitoring for its fluctuation and poor patients compliances. Hence the objective of this work is to construct optimized nanosized malleable liposomes of cytarabine to accentuate transdermal delivery of drug to circumvent previously mentioned drawbacks...
May 17, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29753773/synthesis-anticancer-evaluation-and-molecular-docking-studies-of-some-novel-4-6-disubstituted-pyrazolo-3-4-d-pyrimidines-as-cyclin-dependent-kinase-2-cdk2-inhibitors
#3
Srinivasulu Cherukupalli, Balakumar Chandrasekaran, Vladimír Kryštof, Rajeshwar Reddy Aleti, Nisar Sayyad, Srinivas Reddy Merugu, Narva Deshwar Kushwaha, Rajshekhar Karpoormath
A novel series of 4,6-disubstituted pyrazolo[3,4-d]pyrimidines (7-43) bearing various anilines at C-4 position and thiophenethyl or thiopentane moieties at C-6 position have been designed and synthesized by molecular hybridization approach. All the synthesized compounds were evaluated for in vitro CDK2/cyclin E and Abl kinase inhibitory activity as well as anti-proliferative activity against K-562 (chronic myelogeneous leukemia), and MCF-7 (breast adenocarcinoma) cell lines. The structure-activity relationship (SAR) studies revealed that compounds with thiophenethyl group at C-6 with mono-substituted anilines at C-4 exhibited better CDK2 inhibitory activity compared to alkyl group (thiopentane) at C-6 and di-substituted anilines at C-4 of the scaffold...
March 17, 2018: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29739809/application-of-physiologically-based-pharmacokinetic-modeling-in-understanding-bosutinib-drug-drug-interactions-importance-of-intestinal-p-glycoprotein
#4
Shinji Yamazaki, Cho-Ming Loi, Emi Kimoto, Chester Costales, Manthena V Varma
Bosutinib is an orally available Src/Abl tyrosine kinase inhibitor indicated for the treatment of patients with Ph+ chronic myelogenous leukemia at a clinically recommended dose of 500 mg once daily. Clinical results indicated that increases in bosutinib oral exposures were supra-proportional at the lower doses (50 to 200 mg) and approximately dose-proportional at the higher doses (200 to 600 mg). Bosutinib is a substrate of CYP3A4 and P-glycoprotein and exhibits pH-dependent solubility with moderate intestinal permeability...
May 8, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29735338/investigation-of-chemical-reactivity-of-2-alkoxy-1-4-naphthoquinones-and-their-anticancer-activity
#5
Manoj Manickam, Pulla Reddy Boggu, Jungsuk Cho, Yeo Jin Nam, Seung Jin Lee, Sang-Hun Jung
To establish the structure-activity relationship of 5-hydroxy-1,4-naphthoquinones toward anticancer activity, a series of its derivatives were prepared and tested for the activity (IC50 in µM) against three cell lines; colo205 (colon adenocarcinoma), T47D (breast ductal carcinoma) and K562 (chronic myelogenous leukemia). Among them 2 (IC50 : 2.3; 2.0; 1.4 µM), 6 (IC50 : 1.9; 2.2; 1.3 µM), 9 (IC50 : 0.7; 1.7; 0.9 µM) and 10 (IC50 :1.7; 1.0; 1.2 µM) showed moderate to excellent activity. Our perception toward the DNA substitution of alkoxy groups at the C2 position of these naphthoquinones for the anticancer activity led us to investigate their reactivity of substitution toward dimethylamine as a nucleophile...
April 26, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29723350/clinical-and-pathological-features-of-myeloid-leukemia-cutis
#6
Li Li, Yanan Wang, Christine Guo Lian, Nina Hu, Hongzhong Jin, Yuehua Liu
BACKGROUND: Myeloid leukemia cutis is the terminology used for cutaneous manifestations of myeloid leukemia. OBJECTIVE: The purpose of this study was to study the clinical, histopathological and immunohistochemical features of myeloid leukemia cutis. METHODS: This was a retrospective study of clinical and pathological features of 10 patients with myeloid leukemia cutis. RESULTS: One patient developed skin lesions before the onset of leukemia, seven patients developed skin infiltration within 4-72 months after the onset of leukemia, and two patients developed skin lesions and systemic leukemia simultaneously...
March 2018: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29692802/hemolytic-anticancer-and-antigiardial-activity-of-palythoa-caribaeorum-venom
#7
Fernando Lazcano-Pérez, Ariana Zavala-Moreno, Yadira Rufino-González, Martha Ponce-Macotela, Alejandro García-Arredondo, Miguel Cuevas-Cruz, Saúl Gómez-Manzo, Jaime Marcial-Quino, Barbarín Arreguín-Lozano, Roberto Arreguín-Espinosa
Background: Cnidarian venoms and extracts have shown a broad variety of biological activities including cytotoxic, antibacterial and antitumoral effects. Most of these studied extracts were obtained from sea anemones or jellyfish. The present study aimed to determine the toxic activity and assess the antitumor and antiparasitic potential of Palythoa caribaeorum venom by evaluating its in vitro toxicity on several models including human tumor cell lines and against the parasite Giardia intestinalis ...
2018: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/29665939/-research-progress-of-%C3%AE-catenin-in-chronic-myelogenous-leukemia-review
#8
Wei Ding, Yu-Feng Li
β-catenin is an important member of Wnt signaling pathway. With more and more research on the relationship between β-catenin and cancers, it is noted that the concentration of β-catenin in cells is not only the landmark of activating the Wnt signaling pathway, but also a common phenomenon in various tumor cells. Moreover, abnormal expression of β-catenin is reported in blastic phase of CML and IM-resistant CML. Besides, β-catenin inhibitor is proved to be effective for the improvement of the IM susceptibility and the postponment of blastic phase...
April 2018: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29663099/feasibility-study-of-stain-free-classification-of-cell-apoptosis-based-on-diffraction-imaging-flow-cytometry-and-supervised-machine-learning-techniques
#9
Jingwen Feng, Tong Feng, Chengwen Yang, Wei Wang, Yu Sa, Yuanming Feng
This study was to explore the feasibility of prediction and classification of cells in different stages of apoptosis with a stain-free method based on diffraction images and supervised machine learning. Apoptosis was induced in human chronic myelogenous leukemia K562 cells by cis-platinum (DDP). A newly developed technique of polarization diffraction imaging flow cytometry (p-DIFC) was performed to acquire diffraction images of the cells in three different statuses (viable, early apoptotic and late apoptotic/necrotic) after cell separation through fluorescence activated cell sorting with Annexin V-PE and SYTOX® Green double staining...
April 16, 2018: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/29655913/germacrone-reverses-adriamycin-resistance-in-human-chronic-myelogenous-leukemia-k562-adm-cells-by-suppressing-mdr1-gene-p-glycoprotein-expression
#10
Jia Pan, Dong Miao, Li Chen
Multidrug resistance (MDR) usually causes chemotherapy failure of chronic myelogenous leukemia (CML). Germacrone is a terpenoid compound and has been reported to reverse MDR in breast cancer cells. However, the effect of germacrone on MDR in CML cells was unknown. The aim of the present study was to evaluate the effect of germacrone on MDR in adriamycin resistance of CML cells. Treatment with a combination of germacrone and adriamycin synergistically inhibited the viability and increased LDH release in K562/ADM cells...
April 12, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29623856/investigation-of-the-roles-of-non-neuronal-acetylcholine-in-chronic-myeloid-leukemic-cells-and-their-erythroid-or-megakaryocytic-differentiated-lines
#11
Banu Aydin, Hulya Cabadak, Zafer Mehmet Goren
Many studies suggested that acetylcholine (ACh) might serve as an autocrine/ paracrine growth factor in several types of tumors or tumor cell lines. Therefore, cholinergic signaling seems to be functionally important in cancer. High levels of acetylcholinesterase (AChE) activity have been reported in primary brain tumors, ovarian, colon and lung tumors. K562 cells were derived from a chronic myelogenous leukemia patient during blast crisis serving as pluripotent hematopoietic stem cells. K562 cells were incubated with various cholinergic agonists or antagonists to investigate the role of ACh in different differentiated cell lines...
April 6, 2018: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29593936/oral-effects-and-early-implant-survival-results-after-imatinib-discontinuation-therapy-for-chronic-myelogenous-leukemia-a-case-report
#12
Douglas R Dixon, Alaa Yassin
Introduction: Little is known regarding the success, failure, or complication rates of advanced implant procedures in patients after discontinuation therapy of long-term medications for the treatment of chronic myelogenous leukemia (CML). This case report presents initial results of a case involving implant placement in the mandible and maxilla as well as reduction of palatal oral pigmentation in a patient discontinuing long-term tyrosine kinase inhibitor (TKI) therapy for CML. Case Presentation: A 57-year-old male was referred to the Department of Periodontics, University of Washington, Seattle, Washington, for an assessment of edentulous areas (tooth sites #3 and #14) and failing tooth #19...
August 2017: Clinical Advances in Periodontics
https://www.readbyqxmd.com/read/29584690/lactic-acid-bacteria-from-kefir-increase-cytotoxicity-of-natural-killer-cells-to-tumor-cells
#13
Takuya Yamane, Tatsuji Sakamoto, Takenori Nakagaki, Yoshihisa Nakano
The Japanese fermented beverage, homemade kefir, contains six lactic acid bacteria: Lactococcus. lactis subsp. Lactis , Lactococcus . lactis subsp. Cremoris , Lactococcus. Lactis subsp. Lactis biovar diacetylactis , Lactobacillus plantarum , Leuconostoc meseuteroides subsp. Cremoris and Lactobacillus casei . In this study, we found that a mixture of the six lactic acid bacteria from kefir increased the cytotoxicity of human natural killer KHYG-1 cells to human chronic myelogenous leukemia K562 cells and colorectal tumor HCT116 cells...
March 27, 2018: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29553827/isolation-and-antiproliferative-activity-of-triterpenoids-and-fatty-acids-from-the-leaves-and-stem-of-turraea-vogelii-hook-f-ex-benth
#14
Abdulmumeen A Hamid, Olapeju O Aiyelaagbe, Arvind S Negi, Fatima Kaneez, Suaib Luqman, Stephen O Oguntoye, Satish B Kumar, Marili Zubair
Chloroform extract from the leaves of Turraea vogelii Hook f. ex Benth demonstrated cytotoxic activity against a chronic myelogenous leukemia cell, K-562 with IC50 of 14.27 μg/mL, while chloroform, ethyl acetate and methanol extracts from the stem of the plant inhibited K-562 cells growth with IC50 of 19.50, 24.10 and 85.40 μg/mL respectively. Bioactive chloroform extract of Turraea vogelii leaves affords two triterpenoids: oleana-12,15,20-trien-3β-ol (1), and oleana-11,13-dien-3β,16α,28-triol (2), with six fatty esters, ethyl hexaeicos-5-enoate (3), 3-hydroxy-1,2,3-propanetriyltris(tetadecanoate) (4), 1,2,3-propanetriyl(7Z,7'Z,7''Z)tris(-7-hexadecenoate) (5), 1,2,3-propanetriyl(5Z,5'Z,5''Z)tris(-5-hexadecenoate) (6), 1,2,3-propanetriyltris(octadecanoate) (7), and 2β-hydroxymethyl tetraeicosanoate (8)...
March 19, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29552145/novel-tlr7-agonist-stimulates-activity-of-cik-nk-immunological-effector-cells-to-enhance-antitumor-cytotoxicity
#15
Dong Gao, Yongguang Cai, Yanyuan Chen, Wang Li, Chih-Chang Wei, Xiaoling Luo, Yuhuan Wang
Toll-like receptor (TLR) 7/8 agonists have been applied in combination with chemo-, radio- or immunotherapy for lymphoma, and used as topical drugs for the treatment of viral skin lesions and skin tumors. In the present study, the role of an adenine analog, 9-(4-carboxyphenyl)-8-hydroxy-2-(2-methoxyethoxy)-adenine [termed Gao Dong (GD)], a novel TLR7 agonist, in the activation of cytokine-induced killer/natural killer (CIK/NK) cells was determined. The results of the present study indicated that GD was able to activate CIK/NK cells...
April 2018: Oncology Letters
https://www.readbyqxmd.com/read/29533737/bcr-abl-regulation-of-sphingomyelin-synthase-1-reveals-a-novel-oncogenic-driven-mechanism-of-protein-up-regulation
#16
Sitapriya Moorthi, Tara Ann Burns, Gui-Qin Yu, Chiara Luberto
Bcr-Abl (break-point cluster region-abelson), the oncogenic trigger of chronic myelogenous leukemia (CML), has previously been shown to up-regulate the expression and activity of sphingomyelin synthase 1 (SMS1), which contributes to the proliferation of CML cells; however, the mechanism by which this increased expression of SMS1 is mediated remains unknown. In the current study, we show that Bcr-Abl enhances the expression of SMS1 via a 30-fold up-regulation of its transcription. Of most interest, the Bcr-Abl-regulated transcription of SMS1 is initiated from a novel transcription start site (TSS) that is just upstream of the open reading frame...
March 13, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29528717/malignant-mesothelioma-in-individuals-with-nonmesothelial-neoplasms
#17
Kelly J Butnor, Elizabeth N Pavlisko, Thomas A Sporn, Victor L Roggli
CONTEXT: - Malignant mesothelioma (MM) is a component of the BAP1 tumor predisposition syndrome. Other than in BAP1 familial studies, nonmesothelial neoplasms in individuals with MM has not been comprehensively assessed. OBJECTIVE: - To assess the spectrum and prevalence of nonmesothelial neoplasms in individuals with MM. DESIGN: - Individuals with MM and second neoplasms were identified from a database of 3900 MM cases. The expected prevalence of each type of neoplasm was calculated and compared with the actual prevalence in the study population using available Surveillance, Epidemiology, and End Results data and other published data...
March 12, 2018: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/29520446/when-to-stop-tyrosine-kinase-inhibitors-for-the-treatment-of-chronic-myeloid-leukemia
#18
REVIEW
Pierre Laneuville
Strict criteria for when to stop tyrosine kinase inhibitor (TKI) therapy in clinical practice are not easily defined without an agreement on what probability of achieving a treatment-free remission (TFR) constitutes a medically acceptable standard and consideration of the potential medical risks of continued TKI therapy and/or patient preferences. Patients in sustained deep molecular response (DMR) have no significant chronic myelogenous leukemia-related risk of progression and death, and thus, safety is of paramount importance...
March 8, 2018: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29518056/20-s-ginsenoside-rh2-induce-the-apoptosis-and-autophagy-in-u937-and-k562-cells
#19
Jianjian Zhuang, Juxin Yin, Chaojian Xu, Ying Mu, Shaowu Lv
Acute myeloid leukemia (AML) and Chronic myelogenous leukemia (CML) are common leukemia in adults. 20(S)-GRh2 is an important bioactive substance that is present in Panax ginseng. However, there are no investigations that deal with the comparison of apoptosis, the occurrence of autophagy, and the relationship between apoptosis and autophagy after being treated with 20(S)-GRh2 in AML and CML. In this study, we explored the effect of 20(S)-GRh2 on the AML and CML (U937 and K562). Fluorescence microscopy, CCK-8, Quantitative realtime PCR, Western blot, transmission electron microscopy (TEM), and flow cytometric analysis were used to detect the occurrence of cell proliferation inhibition, apoptosis, and autophagy...
March 8, 2018: Nutrients
https://www.readbyqxmd.com/read/29511345/targeting-pfkfb3-sensitizes-chronic-myelogenous-leukemia-cells-to-tyrosine-kinase-inhibitor
#20
Yu Zhu, Luo Lu, Chun Qiao, Yi Shan, Huapeng Li, Sixuan Qian, Ming Hong, Huihui Zhao, Jianyong Li, Zhongfa Yang, Yaoyu Chen
Resistance to the BCR-ABL tyrosine kinase inhibitor (TKI) remains a challenge for curing the disease in chronic myeloid leukemia (CML) patients as leukemia cells may survive through BCR-ABL kinase activity-independent signal pathways. To gain insight into BCR-ABL kinase activity-independent mechanisms, we performed an initial bioinformatics screen and followed by a quantitative PCR screen of genes that were elevated in CML samples. A total of 33 candidate genes were identified to be highly expressed in TKIs resistant patients...
March 7, 2018: Oncogene
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