keyword
MENU ▼
Read by QxMD icon Read
search

therapy resistance

keyword
https://www.readbyqxmd.com/read/28088556/regulation-of-docetaxel-sensitivity-in-prostate-cancer-cells-by-hsa-mir-125a-3p-via-modulation-of-mta1-signaling
#1
Jian-Zhou Liu, Feng-Yan Yin, Chang-You Yan, Hui Wang, Xiao-Hui Luo
OBJECTIVE: To identify the potential down-stream targets of hsa-miR-125a-3p, a mature form of miR-125a, during the pathogenesis of chemoresistance in prostate cancer (PCa). METHODS: Expression levels of hsa-miR-125a-3p was assessed in chemoresistant PCa tissues and experimentally-established chemoresistant cells using quantitative RT-PCR (qRT-PCR). The effect of hsa-miR-125a-3p knockdown or hsa-miR-125a-3p overexpression on the Dox-induced cell death was evaluated using apoptosis ELISA in chemosensitive PC-3 cells or in chemoresistant PC-3 cells (PC-3R)...
January 11, 2017: Urology
https://www.readbyqxmd.com/read/28088511/brief-report-egfr-l858m-l861q-cis-mutations-confer-selective-sensitivity-to-afatinib
#2
Jamie A Saxon, Lynette M Sholl, Pasi A Jänne
INTRODUCTION: Tyrosine kinase inhibitors (TKIs) have been developed to treat patients with epidermal growth factor receptor (EGFR)-mutant lung cancers. However, the therapeutic efficacy of TKIs in patients with uncommon EGFR mutations remains unclear. METHODS: Next-generation sequencing was performed on a patient's lung adenocarcinoma tumor sample, revealing rare combined in cis (on the same allele) EGFR mutations. Stable Ba/F3 and NIH-3T3 cell lines harboring the mutations were established to investigate the effect of first, second, and third generation EGFR TKIs on cell proliferation by MTS assay and EGFR phosphorylation by Western blotting...
January 11, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28088467/stat3-signaling-mediates-tumour-resistance-to-egfr-targeted-therapeutics
#3
Ahmad A Zulkifli, Fiona H Tan, Tracy L Putoczki, Stanley S Stylli, Rodney B Luwor
Several EGFR inhibitors are currently undergoing clinical assessment or are approved for the clinical management of patients with varying tumour types. However, treatment often results in a lack of response in many patients. The majority of patients that initially respond eventually present with tumours that display acquired resistance to the original therapy. A large number of receptor tyrosine and intracellular kinases have been implicated in driving signaling that mediates this tumour resistance to anti-EGFR targeted therapy, and in a few cases these discoveries have led to overall changes in prospective tumour screening and clinical practice (K-RAS in mCRC and EGFR T790M in NSCLC)...
January 11, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28088439/antimicrobial-activity-of-photodynamic-therapy-in-combination-with-colistin-against-a-pan-drug-resistant-acinetobacter-baumannii-isolated-from-burn-patient
#4
Ebrahim Boluki, Hossein Kazemian, Hadi Peeridogaheh, Mohammad Yousef Alikhani, Sima Shahabi, Leili Beytollahi, Roghayeh Ghorbanzadeh
Nosocomially-acquired multi-, extensively-, and pandrug resistant (MDR, XDR, and PDR) strains of microorganisms such as Acinetobacter baumannii remain a serious cause of infection and septic mortality in burn patients. Treatment of patients with nosocomial burn wound infections is often complicated by drug-resistant strains of A. baumannii. Today, many researchers are focusing on the investigation of novel non-antibiotic strategies such as photodynamic therapy (PDT). We report a new PDT strategy that suppresses colistin resistance in PDR A...
January 11, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28088075/development-of-a-hypoxia-triggered-and-hypoxic-radiosensitized-liposome-as-a-doxorubicin-carrier-to-promote-synergetic-chemo-radio-therapy-for-glioma
#5
Hongmei Liu, Yandong Xie, Yafei Zhang, Yifan Cai, Baiyang Li, Honglin Mao, Yingguo Liu, Jun Lu, Longzhen Zhang, Rutong Yu
The treatment of malignant primary brain tumors is challenging. Concomitant radiochemotherapy has become the standard clinical treatment for malignant glioma, but there are two critical challenges to overcome in order to increase efficacy. First, glioma is known to have increased resistant to radiation due to its intra-tumoral hypoxia. In addition, the blood-brain barrier (BBB) restricts the distribution of the chemotherapeutic agent to the brain. Therefore, we developed a hypoxic radiosensitizer-prodrug liposome (MLP), in order to deliver DOX to the tumor and to overcome the above challenges, achieving a synergistic chemo-/radiotherapy treatment of malignant glioma...
January 3, 2017: Biomaterials
https://www.readbyqxmd.com/read/28088009/cardiac-output-and-systemic-vascular-resistance-clinical-assessment-compared-with-a-noninvasive-objective-measurement-in-children-with-shock
#6
Asma Razavi, Christopher J L Newth, Robinder G Khemani, Fernando Beltramo, Patrick A Ross
PURPOSE: To evaluate physician assessment of cardiac output and systemic vascular resistance in patients with shock compared with an ultrasonic cardiac output monitor (USCOM). To explore potential changes in therapy decisions if USCOM data were available using physician intervention answers. STUDY DESIGN: Double-blinded, prospective, observational study in a tertiary hospital pediatric intensive care unit. Forty children (<18years) admitted with shock, requiring ongoing volume resuscitation or inotropic support...
December 28, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/28087741/14-3-3sigma-contributes-to-radioresistance-by-regulating-dna-repair-and-cell-cycle-via-parp1-and-chk2
#7
Yifan Chen, Zhaomin Li, Zizheng Dong, Jenny Beebe, Ke Yang, Liwu Fu, Jian-Ting Zhang
: 14-3-3sigma has been implicated in the development of chemo and radiation resistance and in poor prognosis of multiple human cancers. While it has been postulated that 14-3-3sigma contributes to these resistances via inhibiting apoptosis and arresting cells in G2/M phase of the cell cycle, the molecular basis of this regulation is currently unknown. In this study, we tested the hypothesis that 14-3-3sigma causes resistance to DNA-damaging treatments by enhancing DNA repair in cells arrested in G2/M phase following DNA-damaging treatments...
January 13, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28087643/tumor-brca1-reversion-mutation-arising-during-neoadjuvant-platinum-based-chemotherapy-in-triple-negative-breast-cancer-is-associated-with-therapy-resistance
#8
Anosheh Afghahi, Kirsten M Timms, Shaveta Vinayak, Kristin C Jensen, Allison W Kurian, Robert W Carlson, Pei-Jen Chang, Elizabeth A Schackmann, Anne-Renee Hartman, James M Ford, Melinda L Telli
BACKGROUND: In germline BRCA1 or BRCA2 (BRCA1/2) mutation carriers, restoration of tumor BRCA1/2 function by a secondary mutation is recognized as a mechanism of resistance to platinum and PARP inhibitors, primarily in ovarian cancer. We evaluated this mechanism of resistance in newly diagnosed BRCA1/2-mutant breast cancer patients with poor response to neoadjuvant platinum-based therapy. METHODS: PrECOG 0105 was a phase II neoadjuvant study of gemcitabine, carboplatin and iniparib in patients with stage I-IIIA triple-negative or BRCA1/2 mutation-associated breast cancer (n=80)...
January 13, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28087472/extract-of-clinopodium-bolivianum-protects-against-e-coli-invasion-of-uroepithelial-cells
#9
Soumitra Mohanty, Witchuda Kamolvit, Silvia Zambrana, Corine Sandström, Eduardo Gonzales, Claes-Göran Östenson, Annelie Braunerf
ETHNOPHARMACOLOGICAL RELEVANCE: Clinopodium bolivianum is a South American plant with anti-inflammatory and anti-infective activities. The increasing antibiotic resistance urges for alternative therapy. Based on its use in traditional medicine, we investigated the effect of C. bolivianum on the ability to defend bladder epithelial cells from E. coli infection. MATERIALS AND METHODS: The extract was analysed by LC-MS. Bladder epithelial cell lines T24 and 5637 and uropathogenic E...
January 10, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28087069/safety-tolerability-and-antiviral-effect-of-rg-101-in-patients-with-chronic-hepatitis-c-a-phase-1b-double-blind-randomised-controlled-trial
#10
Meike H van der Ree, J Marleen de Vree, Femke Stelma, Sophie Willemse, Marc van der Valk, Svend Rietdijk, Richard Molenkamp, Janke Schinkel, Ad C van Nuenen, Ulrich Beuers, Salah Hadi, Marten Harbers, Eva van der Veer, Kai Liu, John Grundy, Amy K Patick, Adam Pavlicek, Jacqueline Blem, Michael Huang, Paul Grint, Steven Neben, Neil W Gibson, Neeltje A Kootstra, Hendrik W Reesink
BACKGROUND: miR-122 is an important host factor for hepatitis C virus (HCV) replication. The aim of this study was to assess the safety and tolerability, pharmacokinetics, and antiviral effect of a single dose of RG-101, a hepatocyte targeted N-acetylgalactosamine conjugated oligonucleotide that antagonises miR-122, in patients with chronic HCV infection with various genotypes. METHODS: In this randomised, double-blind, placebo-controlled, multicentre, phase 1B study, patients were randomly assigned to RG-101 or placebo (7:1)...
January 10, 2017: Lancet
https://www.readbyqxmd.com/read/28086981/does-antiretroviral-treatment-change-hiv-1-codon-usage-patterns-in-its-genes-a-preliminary-bioinformatics-study
#11
Navaneethan Palanisamy, Nathan Osman, Frédéric Ohnona, Hong-Tao Xu, Bluma Brenner, Thibault Mesplède, Mark A Wainberg
BACKGROUND: Codon usage bias has been described for various organisms and is thought to contribute to the regulation of numerous biological processes including viral infections. HIV-1 codon usage has been previously shown to be different from that of other viruses and man. It is evident that the antiretroviral drugs used to restrict HIV-1 replication also select for resistance variants. We wanted to test whether codon frequencies in HIV-1 sequences from treatment-experienced patients differ from those of treatment-naive individuals due to drug pressure affecting codon usage bias...
January 7, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28086948/is-there-still-a-role-for-cytotoxic-chemotherapy-after-targeted-therapy-and-immunotherapy-in-metastatic-melanoma-a-case-report-and-literature-review
#12
Aurélien Simon, Hampig Raphael Kourie, Joseph Kerger
Metastatic melanoma has long been considered to have a very poor prognosis and to be chemo-resistant. However, a subgroup of patients with metastatic melanoma presents remarkable responses to chemotherapeutic agents, even in the absence of a response to modern targeted therapies and immunotherapies; accordingly, determining predictive biomarkers of the response to chemotherapies for metastatic melanoma remains a priority to guide treatment in these patients. We report a case study of a patient with B-Raf proto-oncogene serine/threonine kinase-mutated metastatic melanoma harbouring many genetic mutations...
January 13, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28086863/exercise-mediated-protection-of-diabetic-heart-through-modulation-of-microrna-mediated-molecular-pathways
#13
REVIEW
Jason Kar Sheng Lew, James T Pearson, Daryl O Schwenke, Rajesh Katare
Hyperglycaemia, hypertension, dyslipidemia and insulin resistance collectively impact on the myocardium of people with diabetes, triggering molecular, structural and myocardial abnormalities. These have been suggested to aggravate oxidative stress, systemic inflammation, myocardial lipotoxicity and impaired myocardial substrate utilization. As a consequence, this leads to the development of a spectrum of cardiovascular diseases, which may include but not limited to coronary endothelial dysfunction, and left ventricular remodelling and dysfunction...
January 13, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28086851/efficacy-of-intermittent-theta-burst-stimulation-itbs-and-10-hz-high-frequency-repetitive-transcranial-magnetic-stimulation-rtms-in-treatment-resistant-unipolar-depression-study-protocol-for-a-randomised-controlled-trial
#14
Samuel Bulteau, Veronique Sébille, Guillemette Fayet, Veronique Thomas-Ollivier, Thibault Deschamps, Annabelle Bonnin-Rivalland, Edouard Laforgue, Anne Pichot, Pierre Valrivière, Elisabeth Auffray-Calvier, June Fortin, Yann Péréon, Jean-Marie Vanelle, Anne Sauvaget
BACKGROUND: The treatment of depression remains a challenge since at least 40% of patients do not respond to initial antidepressant therapy and 20% present chronic symptoms (more than 2 years despite standard treatment administered correctly). Repetitive transcranial magnetic stimulation (rTMS) is an effective adjuvant therapy but still not ideal. Intermittent Theta Burst Stimulation (iTBS), which has only been used recently in clinical practice, could have a faster and more intense effect compared to conventional protocols, including 10-Hz high-frequency rTMS (HF-rTMS)...
January 13, 2017: Trials
https://www.readbyqxmd.com/read/28086831/evaluation-of-the-cytotoxicity-of-the-bithionol-cisplatin-combination-in-a-panel-of-human-ovarian-cancer-cell-lines
#15
Vijayalakshmi N Ayyagari, Tsung-Han Jeff Hsieh, Paula L Diaz-Sylvester, Laurent Brard
BACKGROUND: Combination drug therapy appears a promising approach to overcome drug resistance and reduce drug-related toxicities in ovarian cancer treatments. In this in vitro study, we evaluated the antitumor efficacy of cisplatin in combination with Bithionol (BT) against a panel of ovarian cancer cell lines with special focus on cisplatin-sensitive and cisplatin-resistant cell lines. The primary objectives of this study are to determine the nature of the interactions between BT and cisplatin and to understand the mechanism(s) of action of BT-cisplatin combination...
January 13, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28086777/profile-of-molecular-mutations-in-pfdhfr-pfdhps-pfmdr1-and-pfcrt-genes-of-plasmodium-falciparum-related-to-resistance-to-different-anti-malarial-drugs-in-the-bata-district-equatorial-guinea
#16
Pedro Berzosa, Andrés Esteban-Cantos, Luz García, Vicenta González, Marisa Navarro, Taiomara Fernández, María Romay-Barja, Zaida Herrador, José Miguel Rubio, Policarpo Ncogo, María Santana-Morales, Basilio Valladares, Matilde Riloha, Agustín Benito
BACKGROUND: The emergence of drug resistance in Plasmodium falciparum has been a major contributor to the global burden of malaria. Drug resistance complicates treatment, and it is one of the most important problems in malaria control. This study assessed the level of mutations in P. falciparum genes, pfdhfr, pfdhps, pfmdr1, and pfcrt, related to resistance to different anti-malarial drugs, in the Continental Region of Equatorial Guinea, after 8 years of implementing artesunate combination therapies as the first-line treatment...
January 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28081594/management-of-direct-antiviral-agent-failures
#17
REVIEW
María Buti, Rafael Esteban
The current standard of care for patients with chronic hepatitis C virus (HCV) infection is a combination of direct-acting antiviral agents (DAAs). Most HCV patients treated with these drugs achieve viral elimination, but 1% to 15% fail to attain this objective. Treatment failures are usually related to relapse, and less often to on-treatment viral breakthrough. HCV drug resistant associated substitutions are detected in most patients who do not eliminate the virus. The risk of developing these variants depends on host- and virus-related factors, the properties of the drugs used, and the treatment strategies applied...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28081583/-early-results-of-adjuvant-topical-treatment-of-recurrent-osteomyelitis-with-absorbable-antibiotic-carriers
#18
Y Gramlich, G Walter, J Gils, R Hoffmann
Background Treatment of musculoskeletal infections principally consists of radical surgical debridement and systemic administration of antibiotics. Additional local antibiotic therapy is not yet generally established, and lacks evidence-based proof of efficacy. Nonetheless, there are a variety of practical approaches, as most specialised departments are unwilling to forego this option. The established polymethylmetacrylate (PMMA) carrier system has a number of practical disadvantages. This has led to the increased use of absorbable carrier systems, and those based on calcium sulphate have given particularly encouraging results...
January 12, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28081345/growing-oxa-23-type-strains-among-carbapenem-resistant-acinetobacter-baumannii-and-tigecycline-as-an-alternate-combination-therapy
#19
Şerife Altun, Zeliha Koçak Tufan, Belgin Altun, Ufuk Önde, Sami Kınıklı, Ali Pekcan Demiröz
BACKGROUND/AIM: The increasing prevalence and global spread of difficult-to-treat carbapenem-resistant Acinetobacter baumannii has become a serious problem. The aim of this study is to investigate the resistance patterns and tigecycline sensitivity of carbapenem-resistant A. baumannii strains. MATERIALS AND METHODS: Acinetobacter strains that were carbapenem-resistant and collected mainly from intensive care units were included into this study. The antibiotic sensitivity/resistance of the strains to other antibiotics and tigecycline were noted...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28081207/myxovirus-resistance-protein-a-mrna-expression-kinetics-in-multiple-sclerosis-patients-treated-with-ifn%C3%AE
#20
Jana Libertinova, Eva Meluzinova, Ales Tomek, Dana Horakova, Ivana Kovarova, Vaclav Matoska, Simona Kumstyrova, Miroslav Zajac, Eva Hyncicova, Petra Liskova, Eva Houzvickova, Lukas Martinkovic, Martin Bojar, Eva Havrdova, Petr Marusic
INTRODUCTION: Interferon-β (IFNß) is the first-line treatment for relapsing-remitting multiple sclerosis. Myxovirus resistance protein A (MxA) is a marker of IFNß bioactivity, which may be reduced by neutralizing antibodies (NAbs) against IFNß. The aim of the study was to analyze the kinetics of MxA mRNA expression during long-term IFNβ treatment and assess its predictive value. METHODS: A prospective, observational, open-label, non-randomized study was designed in multiple sclerosis patients starting IFNß treatment...
2017: PloS One
keyword
keyword
44650
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"