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https://www.readbyqxmd.com/read/28646646/antileukemic-activity-and-cellular-effects-of-the-antimalarial-agent-artesunate-in-acute-myeloid-leukemia
#1
Bijender Kumar, Arjun Kalvala, Su Chu, Steven Rosen, Stephen J Forman, Guido Marcucci, Ching-Cheng Chen, Vinod Pullarkat
The artimisinins are a class of antimalarial compounds whose antiparasitic activity is mediated by induction of reactive oxygen species (ROS). Herein, we report that among the artimisinins, artesunate (ARTS), an orally bioavailable compound has the most potent antileukemic activity in AML models and primary patients' blasts. ARTS was most cytotoxic to the FLT3-ITD+ AML MV4-11 and MOLM-13 cells (IC50 values of 1.1 and 0.82μM respectively), inhibited colony formation in primary AML and MDS cells and augmented cytotoxicity of chemotherapeutics...
May 10, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28645840/autoreject-automated-artifact-rejection-for-meg-and-eeg-data
#2
Mainak Jas, Denis A Engemann, Yousra Bekhti, Federico Raimondo, Alexandre Gramfort
We present an automated algorithm for unified rejection and repair of bad trials in magnetoencephalography (MEG) and electroencephalography (EEG) signals. Our method capitalizes on cross-validation in conjunction with a robust evaluation metric to estimate the optimal peak-to-peak threshold - a quantity commonly used for identifying bad trials in M/EEG. This approach is then extended to a more sophisticated algorithm which estimates this threshold for each sensor yielding trial-wise bad sensors. Depending on the number of bad sensors, the trial is then repaired by interpolation or by excluding it from subsequent analysis...
June 20, 2017: NeuroImage
https://www.readbyqxmd.com/read/28645428/cost-effectiveness-of-laparoscopy-as-diagnostic-tool-before-primary-cytoreductive-surgery-in-ovarian-cancer
#3
Roelien van de Vrie, Hannah S van Meurs, Marianne J Rutten, Christiana A Naaktgeboren, Brent C Opmeer, Katja N Gaarenstroom, Toon van Gorp, Henk G Ter Brugge, Ward Hofhuis, Henk W R Schreuder, Henriette J G Arts, Petra L M Zusterzeel, Johanna M A Pijnenborg, Maarten van Haaften, Mirjam J A Engelen, Erik A Boss, M Caroline Vos, Kees G Gerestein, Eltjo M J Schutter, Gemma G Kenter, Patrick M M Bossuyt, Ben Willem Mol, Marrije R Buist
OBJECTIVE: To evaluate the cost-effectiveness of a diagnostic laparoscopy prior to primary cytoreductive surgery to prevent futile primary cytoreductive surgery (i.e. leaving >1cm residual disease) in patients suspected of advanced stage ovarian cancer. METHODS: An economic analysis was conducted alongside a randomized controlled trial in which patients suspected of advanced stage ovarian cancer who qualified for primary cytoreductive surgery were randomized to either laparoscopy or primary cytoreductive surgery...
June 20, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28639254/use-of-a-digital-phantom-developed-by-qiba-for-harmonizing-suvs-obtained-from-the-state-of-the-art-spect-ct-systems-a-multicenter-study
#4
Tadaki Nakahara, Hiromitsu Daisaki, Yasushi Yamamoto, Takashi Iimori, Kazuyuki Miyagawa, Tomoya Okamoto, Yoshiki Owaki, Nobuhiro Yada, Koichi Sawada, Ryotaro Tokorodani, Masahiro Jinzaki
BACKGROUND: Although quantitative analysis using standardized uptake value (SUV) becomes realistic in clinical single-photon emission computed tomography/computed tomography (SPECT/CT) imaging, reconstruction parameter settings can deliver different quantitative results among different SPECT/CT systems. This study aims to propose a use of the digital reference object (DRO), which is a National Electrical Manufacturers Association (NEMA) phantom-like object developed by the Quantitative Imaging Biomarker Alliance (QIBA) fluorodeoxyglucose-positron emission tomography technical committee, for the purpose of harmonizing SUVs in Tc-99m SPECT/CT imaging...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28637262/qualitative-exploration-of-a-smoking-cessation-trial-for-people-living-with-hiv-in-south-africa
#5
Nandita Krishnan, Joel Gittelsohn, Alexandra Ross, Jessica Elf, Sandy Chon, Raymond Niaura, Neil Martinson, Jonathan E Golub
Introduction: In South Africa, people living with HIV (PLWH) have a high prevalence of smoking, which undermines the beneficial effects of antiretroviral therapy (ART). However, little is known about barriers to smoking cessation and what interventions work for PLWH in this setting. Methods: A randomized trial comparing intensive anti-smoking counseling versus counseling and nicotine replacement therapy (NRT) was recently concluded in Klerksdorp, South Africa. In a post-trial follow-up, 23 in-depth interviews with patients and one focus group discussion with counselors from the trial were conducted...
June 16, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28636514/duration-of-dual-anti-platelet-therapy-state-of-the-art-after-the-dapt-and-pegasus-timi-54-trials
#6
Charles Pirlet, Victor Legrand, Astrid Nyssen, Luc Pierard, Olivier Gach
Dual anti-platelet therapy is prescribed in the setting of coronary heart disease for the prevention of stent thrombosis and acute thrombotic events. The optimal duration of dual anti-platelet therapy is still under debate as numerous trials have shown non-inferiority of a strategy of early cessation of one of the agents as compared to the standard practice whereas two larger trials have demonstrated benefit of prolonging dual anti-platelet therapy.
March 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28632477/antiretroviral-therapy-adherence-and-self-efficacy-among-people-living-with-hiv-and-a-history-of-drug-use-in-vietnam
#7
Li Li, Chunqing Lin, Sung-Jae Lee, Le Anh Tuan, Nan Feng, Nguyen Anh Tuan
People living with HIV with a history of drug use face additional psychosocial challenges that could compromise their adherence to antiretroviral therapy (ART). This study examined ART treatment adherence and adherence self-efficacy among people living with HIV with a history of drug use in Vietnam. We used cross-sectional baseline data collected between October 2014 and February 2015 from a randomized controlled trial in Vietnam. Of the 900 persons with a history of drug use in the trial, a sample of 109 people living with HIV currently on ART were included in the study...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28630651/improving-antiretroviral-therapy-adherence-in-resource-limited-settings-at-scale-a-discussion-of-interventions-and-recommendations
#8
Jessica E Haberer, Lora Sabin, K Rivet Amico, Catherine Orrell, Omar Galárraga, Alexander C Tsai, Rachel C Vreeman, Ira Wilson, Nadia A Sam-Agudu, Terrence F Blaschke, Bernard Vrijens, Claude A Mellins, Robert H Remien, Sheri D Weiser, Elizabeth Lowenthal, Michael J Stirratt, Papa Salif Sow, Bruce Thomas, Nathan Ford, Edward Mills, Richard Lester, Jean B Nachega, Bosco Mwebesa Bwana, Fred Ssewamala, Lawrence Mbuagbaw, Paula Munderi, Elvin Geng, David R Bangsberg
Introduction: Successful population-level antiretroviral therapy (ART) adherence will be necessary to realize both the clinical and prevention benefits of antiretroviral scale-up and, ultimately, the end of AIDS. Although many people living with HIV are adhering well, others struggle and most are likely to experience challenges in adherence that may threaten virologic suppression at some point during lifelong therapy. Despite the importance of ART adherence, supportive interventions have generally not been implemented at scale...
2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28625827/cells-as-advanced-therapeutics-state-of-the-art-challenges-and-opportunities-in-large-scale-biomanufacturing-of-high-quality-cells-for-adoptive-immunotherapies
#9
Nate J Dwarshuis, Kirsten Parratt, Adriana Santiago-Miranda, Krishnendu Roy
Therapeutic cells hold tremendous promise in treating currently incurable, chronic diseases since they perform multiple, integrated, complex functions in vivo compared to traditional small-molecule drugs or biologics. However, they also pose significant challenges as therapeutic products because (a) their complex mechanisms of actions are difficult to understand and (b) low-cost bioprocesses for large-scale, reproducible manufacturing of cells have yet to be developed. Immunotherapies using T cells and dendritic cells (DCs) have already shown great promise in treating several types of cancers, and human mesenchymal stromal cells (hMSCs) are now extensively being evaluated in clinical trials as immune-modulatory cells...
June 15, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28624755/stereo-vision-based-tracking-of-soft-tissue-motion-with-application-to-online-ablation-control-in-laser-microsurgery
#10
Andreas Schoob, Dennis Kundrat, Lüder A Kahrs, Tobias Ortmaier
Recent research has revealed that image-based methods can enhance accuracy and safety in laser microsurgery. In this study, non-rigid tracking using surgical stereo imaging and its application to laser ablation is discussed. A recently developed motion estimation framework based on piecewise affine deformation modeling is extended by a mesh refinement step and considering texture information. This compensates for tracking inaccuracies potentially caused by inconsistent feature matches or drift. To facilitate online application of the method, computational load is reduced by concurrent processing and affine-invariant fusion of tracking and refinement results...
June 8, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28622405/implementing-a-randomized-controlled-trial-through-a-community-academia-partnered-participatory-research-arte-con-salud-research-informed-intervention
#11
Patricia Noboa-Ortega, Wanda I Figueroa-Cosme, Alana Feldman-Soler, Christine Miranda-Díaz
OBJECTIVE: "Arte con Salud" is an HIV/AIDS prevention intervention tailored for Puerto Rican women who have sex with men. The intervention curriculum was refined through a community-academic collaboration between Taller Salud, the UPRCayey Campus, and the UCC-School of Medicine, subsided in 2012-13 by PRCTRC. The collaboration has been crucial to validate the impact of using art as a tool to facilitate sexual negotiation skills and safer sexual practices among adult women have sex with men participating in HIV prevention education...
June 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28621265/improving-radiotherapy-in-cancer-treatment-promises-and-challenges
#12
REVIEW
Helen H W Chen, Macus Tien Kuo
Effective radiotherapy for cancer has relied on the promise of maximally eradicating tumor cells while minimally killing normal cells. Technological advancement has provided state-of-the-art instrumentation that enables delivery of radiotherapy with great precision to tumor lesions with substantial reduced injury to normal tissues. Moreover, better understanding of radiobiology, particularly the mechanisms of radiation sensitivity and resistance in tumor lesions and toxicity in normal tissues, has improved the treatment efficacy of radiotherapy...
June 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28619751/synthesis-and-profiling-of-a-novel-potent-selective-inhibitor-of-chk1-kinase-possessing-unusual-n-trifluoromethylpyrazole-pharmacophore-resistant-to-metabolic-n-dealkylation
#13
Pounami Samadder, Tereza Suchanková, Ondrej Hylse, Prashant Khirsariya, Fedor Nikulenkov, Stanislav Drápela, Nicol Straková, Petr Vaňhara, Kateřina Vašíčková, Hana Kolářová, Lucia Binó, Miroslava Bittová, Petra Ovesná, Peter Kollar, Radek Fedr, Milan Ešner, Josef Jaroš, Aleš Hampl, Lumír Krejčí, Kamil Paruch, Karel Soucek
Checkpoint-mediated dependency of tumor cells can be deployed to selectively kill them without substantial toxicity to normal cells. Specifically, loss of CHK1, a serine threonine kinase involved in the surveillance of the G2/M checkpoint in the presence of replication stress inflicted by DNA damaging drugs, has been reported to dramatically influence the viability of tumor cells. CHK1's pivotal role in maintaining genomic stability offers attractive opportunity for increasing the selectivity, effectivity and reduced toxicity of chemotherapy...
June 15, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28617733/economic-costs-and-health-related-quality-of-life-outcomes-of-hiv-treatment-after-self-and-facility-based-hiv-testing-in-a-cluster-randomized-trial
#14
Hendramoorthy Maheswaran, Stavros Petrou, Peter MacPherson, Felistas Kumwenda, David G Lalloo, Elizabeth L Corbett, Aileen Clarke
BACKGROUND: The scale-up of HIV self-testing (HIVST) in Africa is recommended, but little is known about how this novel approach influences economic outcomes following subsequent antiretroviral treatment (ART) compared with established facility-based HIV testing and counseling (HTC) approaches. SETTING: HIV clinics in Blantyre, Malawi. METHODS: Consecutive HIV-positive participants, diagnosed by HIVST or facility-based HTC as part of a community cluster-randomized trial (ISRCTN02004005), were followed from initial assessment for ART until 1-year postinitiation...
July 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28617319/pde4-inhibition-and-inflammatory-bowel-disease-a-novel-therapeutic-avenue
#15
REVIEW
Marco Spadaccini, Silvia D'Alessio, Laurent Peyrin-Biroulet, Silvio Danese
BACKGROUND: In the last few decades, a better knowledge of the inflammatory pathways involved in the pathogenesis of Inflammatory Bowel Disease (IBD) has promoted biological therapy as an important tool to treat IBD patients. However, in spite of a wider spectrum of biological drugs, a significant proportion of patients is unaffected by or lose their response to these compounds, along with increased risks of infections and malignancies. For these reasons there is an urgent need to look for new pharmacological targets...
June 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28611579/stacked-autoencoders-for-the-p300-component-detection
#16
Lukáš Vařeka, Pavel Mautner
Novel neural network training methods (commonly referred to as deep learning) have emerged in recent years. Using a combination of unsupervised pre-training and subsequent fine-tuning, deep neural networks have become one of the most reliable classification methods. Since deep neural networks are especially powerful for high-dimensional and non-linear feature vectors, electroencephalography (EEG) and event-related potentials (ERPs) are one of the promising applications. Furthermore, to the authors' best knowledge, there are very few papers that study deep neural networks for EEG/ERP data...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28606812/novel-ctl-epitopes-identified-through-a-y-pestis-proteome-wide-analysis-in-the-search-for-vaccine-candidates-against-plague
#17
Anat Zvi, Shahar Rotem, Ayelet Zauberman, Uri Elia, Moshe Aftalion, Erez Bar-Haim, Emanuelle Mamroud, Ofer Cohen
The causative agent of Plague, Yersinia pestis, is a highly virulent pathogen and a potential bioweapon. Depending on the route of infection, two prevalent occurrences of the disease are known, bubonic and pneumonic. The latter has a high fatality rate. In the absence of a licensed vaccine, intense efforts to develop a safe and efficacious vaccine have been conducted, and humoral-driven subunit vaccines containing the F1 and LcrV antigens are currently under clinical trials. It is well known that a cellular immune response might have an essential additive value to immunity and protection against Y...
June 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28606085/care-cascade-structural-intervention-versus-standard-of-care-in-the-diagnosis-and-treatment-of-hiv-in-china-a-cluster-randomized-controlled-trial-protocol
#18
Yurong Mao, Zunyou Wu, Jennifer M McGoogan, David Liu, Diane Gu, Lynda Erinoff, Walter Ling, Paul VanVeldhuisen, Roger Detels, Albert L Hasson, Robert Lindblad, Julio S G Montaner, Zhenzhu Tang, Yan Zhao
BACKGROUND: The high rate of attrition along the care cascade of infection with human immunodeficiency virus (HIV) results in lost opportunities to provide timely antiretroviral therapy (ART) and to prevent unnecessarily high mortality. This study aims to assess the effectiveness of a structural intervention, the one-stop ("One4All") strategy that streamlines China's HIV care cascade with the intent to improve testing completeness, ART initiation, viral suppression, and mortality. METHOD: A two-arm, cluster-randomized controlled trial was implemented in twelve county hospitals in Guangxi China to test the effectiveness of the One4All strategy (intervention arm) compared to the current standard of care (SOC; control arm)...
June 12, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28606065/neurocognitive-function-in-hiv-infected-persons-with-asymptomatic-cryptococcal-antigenemia-a-comparison-of-three-prospective-cohorts
#19
Martha P Montgomery, Noeline Nakasujja, Bozena M Morawski, Radha Rajasingham, Joshua Rhein, Elizabeth Nalintya, Darlisha A Williams, Kathy Huppler Hullsiek, Agnes Kiragga, Melissa A Rolfes, Renee Donahue Carlson, Nathan C Bahr, Kate E Birkenkamp, Yukari C Manabe, Paul R Bohjanen, Jonathan E Kaplan, Andrew Kambugu, David B Meya, David R Boulware
BACKGROUND: HIV-infected persons with detectable cryptococcal antigen (CrAg) in blood have increased morbidity and mortality compared with HIV-infected persons who are CrAg-negative. This study examined neurocognitive function among persons with asymptomatic cryptococcal antigenemia. METHODS: Participants from three prospective HIV cohorts underwent neurocognitive testing at the time of antiretroviral therapy (ART) initiation. Cohorts included persons with cryptococcal meningitis (N = 90), asymptomatic CrAg + (N = 87), and HIV-infected persons without central nervous system infection (N = 125)...
June 12, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28604824/decline-in-cd4-t-lymphocytes-with-monotherapy-bridging-strategy-for-non-adherent-adolescents-living-with-hiv-infection-results-of-the-impaact-p1094-randomized-trial
#20
Allison L Agwu, Meredith G Warshaw, Elizabeth J McFarland, George K Siberry, Ann J Melvin, Andrew A Wiznia, Lee Fairlie, Sandra Boyd, Paul Harding, Hans M L Spiegel, Elaine J Abrams, Vincent J Carey
INTRODUCTION: Management of persistently non-adherent youth living with HIV (YLHIV) with virologic failure (VF) on combination antiretroviral therapy (cART) remains challenging. One strategy has been using 3TC/ FTC monotherapy (3TC/FTC), which in the presence of the M184V resistance mutation, does not suppress viral replication nor select for additional drug resistance mutations, and reduces viral fitness with limited side effects. P1094 compared the immunologic outcome of continuing failing cART vs...
2017: PloS One
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