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https://www.readbyqxmd.com/read/28212219/drug-infusion-systems-technologies-performance-and-pitfalls
#1
Uoo R Kim, Robert A Peterfreund, Mark A Lovich
This review aims to broadly describe drug infusion technologies and raise subtle but important issues arising from infusion therapy that can potentially lead to patient instability and morbidity. Advantages and disadvantages of gravity-dependent drug infusion are described and compared with electromechanical approaches for precise control of medication infusion, including large-volume peristaltic and syringe pumps. This review discusses how drugs and inert carriers interact within infusion systems and outlines several complexities and potential sources of drug error...
February 16, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28212092/modeling-contrast-imaging-assisted-optimal-targeted-drug-delivery-a-touchable-communication-channel-estimation-and-waveform-design-perspective
#2
Yifan Chen, Yu Zhou, Ross Murch, Panagiotis Kosmas
To maximize the effect of treatment and minimize the adverse effect on patients, we propose to optimize nanorobotsassisted targeted drug delivery (TDD) for locoregional treatment of tumor from the perspective of touchable communication channel estimation and waveform design. The drug particles are the information molecules; the loading/injection and unloading of the drug correspond to the transmitting and receiving processes; the concentration-time profile of the drug particles administered corresponds to the signalling pulse...
February 15, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28211603/impact-of-six-versus-12-months-of-dual-antiplatelet-therapy-in-patients-with-drug-eluting-stent-implantation-after-risk-stratification-with-the-residual-syntax-score-results-from-a-secondary-analysis-of-the-i-love-it-2-trial
#3
Miaohan Qiu, Yi Li, Jing Li, Kai Xu, Quanmin Jing, Shaohong Dong, Zhe Jin, Pitian Zhao, Bo Xu, Yaling Han
BACKGROUND: The optimal duration of dual antiplatelet therapy (DAPT) after drug-eluting stent (DES) implantation remains undetermined, especially for those at high risk of cardiac events postprocedure. OBJECTIVES: This study was aimed to investigate the impact of 6 versus 12 months of DAPT after DES implantation based on risk stratification with the residual SYNTAX score (rSS). METHODS: A total of 2737 patients in the I-LOVE-IT 2 trial were grouped according to rSS status (low rSS [rSS = 0, n = 1474] versus high rSS [rSS > 0, n = 1263]) and DAPT duration (6 months vs...
February 17, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28211294/hemopred-a-web-server-for-predicting-the-hemolytic-activity-of-peptides
#4
Thet Su Win, Aijaz Ahmad Malik, Virapong Prachayasittikul, Jarl E S Wikberg, Chanin Nantasenamat, Watshara Shoombuatong
AIM: Toxicity arising from hemolytic activity of peptides hinders its further progress as drug candidates. MATERIALS & METHODS: This study describes a sequence-based predictor based on a random forest classifier using amino acid composition, dipeptide composition and physicochemical descriptors (named HemoPred). RESULTS: This approach could outperform previously reported method and typical classification methods (e.g., support vector machine and decision tree) verified by fivefold cross-validation and external validation with accuracy and Matthews correlation coefficient in excess of 95% and 0...
February 17, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28211134/effect-of-age-on-the-performance-of-bispectral-and-entropy-indices-during-sevoflurane-pediatric-anesthesia-a-pharmacometric-study
#5
Alberto Sciusco, Joseph F Standing, Yucheng Sheng, Pasquale Raimondo, Gilda Cinnella, Michele Dambrosio
BACKGROUND: Bispectral index (BIS) and entropy monitors have been proposed for use in children, but research has not supported their validity for infants. However, effective monitoring of young children may be even more important than for adults, to aid appropriate anesthetic dosing and reduce the chance of adverse consequences. This prospective study aimed to investigate the relationships between age and the predictive performance of BIS and entropy monitors in measuring the anesthetic drug effects within a pediatric surgery setting...
February 17, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28208877/evaluation-of-antibiotic-residues-in-pasteurized-and-raw-milk-distributed-in-the-south-of-khorasan-e-razavi-province-iran
#6
Mortez Mohammadzadeh Moghadam, Mostafa Amiri, Hamed Ramezani Awal Riabi, Hamid Ramezani Awal Riabi
INTRODUCTION: The presence of antibiotic residues in milk and other products livestock is a health problem which can endanger public health. Antibiotics are used widely in animal husbandry to treat diseases related to bacterial infections. Antimicrobial drugs have been in use for decades in industry. They are commonly used in livestock facilities to treat mastitis. AIM: This study aimed to investigate antibiotic residues in pasteurized milk distributed in schools, in milk collection centers, and in milk production factories in Gonabad city...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28206770/controlling-the-release-of-indomethacin-from-glass-solutions-layered-with-a-rate-controlling-membrane-using-fluid-bed-processing-part-1-surface-and-cross-sectional-chemical-analysis
#7
Aswin Dereymaker, David J Scurr, Elisabeth D Steer, Clive J Roberts, Guy Van den Mooter
Fluid bed coating has been shown to be a suitable manufacturing technique to formulate poorly soluble drugs in glass solutions. Layering inert carriers with a drug-polymer mixture enables these beads to be immediately filled into capsules, thus avoiding additional, potentially destabilizing, downstream processing. In this study fluid bed coating is proposed for the production of controlled release dosage forms of glass solutions by applying a second, rate controlling membrane on top of the glass solution. Adding a second coating layer adds to the physical and chemical complexity of the drug delivery system so a thorough understanding of the physical structure and phase behavior of the different coating layers is needed...
February 16, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28205262/modern-multiple-myeloma-therapy-deep-sustained-treatment-response-and-good-clinical-outcomes
#8
REVIEW
O Landgren, K Iskander
In the USA at the beginning of this century, the average overall survival in patients with multiple myeloma was about 3 years. Around that time, three drugs (bortezomib, lenalidomide and thalidomide) were introduced for the treatment of multiple myeloma and, in 2012, carfilzomib received accelerated approval by the US Food and Drug Administration (FDA). Driven by access to better drugs, median overall survival in younger patients (aged <50 years) was >10 years by 2014. The FDA approved 14 new drugs for the treatment of cancer in 2015; four of these were approved for the treatment of myeloma (panobinostat, daratumumab, elotuzumab and ixazomib)...
February 16, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28205193/new-therapeutic-strategies-for-triple-negative-breast-cancer
#9
REVIEW
Borbála Székely, Andrea L M Silber, Lajos Pusztai
Relatively few clinically important therapeutic advances have occurred in the treatment of triple-negative breast cancer (TNBC) since the introduction of taxanes as adjuvant therapy over 20 years ago. However, this is rapidly changing due to a variety of conceptually important clinical trials and emerging new options such as immune checkpoint inhibitors and antibody-drug conjugates. Evidence also increasingly supports that platinum drugs and inhibitors of poly (ADP-ribose) polymerase, or PARP, are particularly effective in the treatment of germline BRCA-mutant cancers, including TNBC...
February 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28203363/an-exploratory-factor-analysis-of-the-spontaneous-reporting-of-severe-cutaneous-adverse-reactions
#10
Manfred Hauben, Eric Hung, Wen-Yaw Hsieh
BACKGROUND: Severe cutaneous adverse reactions (SCARs) are prominent in pharmacovigilance (PhV). They have some commonalities such as nonimmediate nature and T-cell mediation and rare overlap syndromes have been documented, most commonly involving acute generalized exanthematous pustulosis (AGEP) and drug rash with eosinophilia and systemic symptoms (DRESS), and DRESS and toxic epidermal necrolysis (TEN). However, they display diverse clinical phenotypes and variations in specific T-cell immune response profiles, plus some specific genotype-phenotype associations...
January 2017: Therapeutic Advances in Drug Safety
https://www.readbyqxmd.com/read/28202763/inhibition-of-vpx-mediated-samhd1-and-vpr-mediated-hltf-degradation-by-selective-disruption-of-viral-crl4-dcaf1-e3-ubiquitin-ligase-assembly
#11
Hong Wang, Haoran Guo, Jiaming Su, Yajuan Rui, Wenwen Zheng, Wenying Gao, Wenyan Zhang, Zhaolong Li, Guanchen Liu, Wei Wei, Xiao-Fang Yu
The lentiviral accessory proteins Vpx and Vpr are known to utilize CRL4 (DCAF1) E3 ligase to induce the degradation of the host restriction factor SAMHD1 or transcriptional factor HLTF, respectively. Selective disruption of viral CRL4 (DCAF1) E3 ligase could be a promising antiviral strategy. Recently, we have determined that post-translational modification (neddylation) of Cullin-4 is required for the activation of Vpx-CRL4 (DCAF1) E3 ligase. However, the mechanism of Vpx/Vpr-CRL4 (DCAF1) E3 ligase assembly is still poorly understood...
February 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28202762/maternal-binding-and-neutralizing-igg-responses-targeting-the-c-terminal-region-of-the-v3-loop-are-predictive-of-reduced-peripartum-hiv-1-transmission-risk
#12
David R Martinez, Nathan Vandergrift, Ayooluwa O Douglas, Erin McGuire, John Bainbridge, Nathan I Nicely, David C Montefiori, Georgia D Tomaras, Genevieve G Fouda, Sallie R Permar
The development of an effective maternal HIV-1 vaccine that could synergize with antiretroviral therapy (ART) to eliminate pediatric HIV-1 infection will require the characterization of maternal immune responses capable of blocking transmission of autologous HIV viruses to the infant. We previously identified that maternal plasma antibody binding to linear epitopes within the variable loop 3 (V3) region of HIV envelope (Env) and neutralizing responses against easy to neutralize tier 1 viruses were associated with reduced risk of peripartum HIV infection in the historic U...
February 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28199002/validating-the-shortened-quality-of-life-in-childhood-epilepsy-questionnaire-qolce-55-in-a-sample-of-children-with-drug-resistant-epilepsy
#13
Lauryn Conway, Elysa Widjaja, Mary Lou Smith, Kathy N Speechley, Mark A Ferro
OBJECTIVE: The aim of this study was to validate the newly developed shortened Quality of Life in Childhood Epilepsy Questionnaire (QOLCE-55) in a sample of children with drug-resistant epilepsy. METHODS: Data came from 136 children enrolled in the Impact of Pediatric Epilepsy Surgery on Health-Related Quality of Life Study (PEPSQOL), a multicenter prospective cohort study. Confirmatory factor analysis was used to assess the higher-order factor structure of the QOLCE-55...
February 15, 2017: Epilepsia
https://www.readbyqxmd.com/read/28198446/a-mutation-identified-in-neonatal-microcephaly-destabilizes-zika-virus-ns1-assembly-in-vitro
#14
Deping Wang, Cheng Chen, Shengnan Liu, Han Zhou, Kailin Yang, Qi Zhao, Xiaoyun Ji, Chen Chen, Wei Xie, Zefang Wang, Li-Zhi Mi, Haitao Yang
An unprecedented epidemic of Zika virus (ZIKV) infection had spread to South and Central America. ZIKV infection was recently confirmed by CDC (the Centers for Disease Control and Prevention) to cause neonatal microcephaly, which posed a significant public health emergency of international concern. No specific vaccines or drugs are currently available to fight ZIKV infection. ZIKV nonstructural protein 1 (NS1) plays an essential role in viral replication and immune evasion. We determined the crystal structure of ZIKV NS1172-352, which forms a head-to-head, symmetric dimer with a unique 14-stranded β-ladder conserved among flaviviruses...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197745/crosstalk-signaling-in-targeted-melanoma-therapy
#15
Svenja Meierjohann
Inhibition of the BRAF/MAPK pathway belongs to the standard therapies for patients with activating BRAF(V600E/K) mutations. However, even in well-responding tumors, anti-tumorigenic effect and clinical benefit are only transient, and the original tumors often relapse. This demonstrates that there are remaining residual tumors, which have withstood therapy-induced apoptosis and which have the potential to resume growth. Although BRAF mutant melanoma cells seem to depend on BRAF/MAPK signaling, the inhibition of this pathway triggers several events, which modulate the tumor as well as the tumor niche...
February 14, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/28197415/pharmacoinformatics-adaptive-evolution-and-elucidation-of-six-novel-compounds-for-schizophrenia-treatment-by-targeting-daoa-g72-isoforms
#16
Sheikh Arslan Sehgal
Studies on Schizophrenia so far reveal a complex picture of neurological malfunctioning reported to be strongly associated with DAOA. Detailed sequence analyses proved DAOA as a primate specific gene having conserved gene desert region on both upstream and downstream region. The analyses of 10 MB chromosomal region of primates, birds, rodents, and reptiles having DAOA evidenced the conserved part in primates and in the rest of species, while DAOA is only present in primates. DAOA has four isoforms having one interaction partner DAO...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28197292/chlorthalidone-plus-amiloride-reduces-the-central-systolic-blood-pressure-in-stage-1-hypertension-patients
#17
Leticia Aparecida Barufi Fernandes, Elizabeth do Espirito Santo Cestario, Luciana Neves Cosenso-Martin, Jose Fernando Vilela-Martin, Juan Carlos Yugar-Toledo, Flavio Danni Fuchs
BACKGROUND: Hypertension reduction strategies use blood pressure in the brachial artery as the primary endpoint. Individuals who achieve the target blood pressure reduction with antihypertensive treatment have residual cardiovascular risk attributed to the difference in pressure between the aorta and brachial artery. Antihypertensive treatment affects the intrinsic properties of the vascular wall and arterial stiffness markers and consequently the central pressure. Recent publications stress the importance of adequate control of the central compared to peripheral blood pressure...
December 2016: Cardiology Research
https://www.readbyqxmd.com/read/28196793/specific-factor-ix-mrna-and-protein-features-favor-drug-induced-readthrough-over-recurrent-nonsense-mutations
#18
Alessio Branchini, Mattia Ferrarese, Matteo Campioni, Giancarlo Castaman, Rosella Mari, Francesco Bernardi, Mirko Pinotti
Drug-induced readthrough over premature stop codons (PTCs) is a potentially attractive therapy for genetic disorders but a wide outcome variability has been observed. Through expression studies we investigated the responsiveness to the readthrough-inducing drug geneticin of eleven rationally-selected factor IX (FIX) nonsense mutations, present in 70% (324/469) of Hemophilia B (HB) patients with PTCs. Among the predicted readthrough-permissive TGA variants, only two (p.W240X, p.R384X) responded with a remarkable rescue of FIX activity...
February 14, 2017: Blood
https://www.readbyqxmd.com/read/28196593/liquid-biopsies-what-we-do-not-know-yet
#19
REVIEW
Alberto Bardelli, Klaus Pantel
The inherent molecular heterogeneity of metastatic tumors and the ability of cancer genomes to dynamically evolve are not properly captured by tissue specimens. Analysis of cell-free DNA and circulating tumor cells has the potential to change clinical practice by exploiting blood rather than tissue as a source of information. Liquid biopsies are already used to monitor disease response and track the emergence of drug resistance. The suitability of blood-based molecular profiles for early detection and monitoring minimal residual disease is being evaluated...
February 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28195931/should-antipsychotic-medications-for-schizophrenia-be-given-for-a-lifetime-a-naturalistic-long-term-follow-up-study
#20
Ira D Glick, John M Davis, Daisy Zamora, Jacob Ballon, Meena Nuthi
BACKGROUND: Schizophrenia remains a major health problem despite antipsychotic medications that, for most patients, can decrease acute symptoms, decrease relapses, and contribute to partial and sometimes strong positive response in patients with chronic symptoms. What has not been clear-because a double-blind, randomized, placebo-controlled trial is not feasible or ethical-is how many years after the initial episode, or onset of antipsychotic treatment, should medication be continued to achieve the best global outcome...
February 13, 2017: Journal of Clinical Psychopharmacology
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