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https://www.readbyqxmd.com/read/28445704/development-of-standard-methods-for-zika-virus-propagation-titration-and-purification
#1
Sharton Vinicius Antunes Coelho, Rômulo Leão Silva Neris, Michelle Premazzi Papa, Laila Castro Schnellrath, Lana Monteiro Meuren, Diogo A Tschoeke, Luciana Leomil, Brunno Renato Farias Verçoza, Milene Miranda, Fabiano L Thompson, Andrea Thompson Da Poian, Thiago Moreno L Souza, Fabiana Avila Carneiro, Clarissa R Damaso, Iranaia Assunção-Miranda, Luciana Barros de Arruda
The emergence of Zika virus (ZIKV) infection has stimulated several research groups to study and collaborate to understand virus biology and pathogenesis. These efforts may assist with the development of antiviral drugs, vaccines and diagnostic tests, as well as to promote advancements in public health policies. Here, we aim to develop standard protocols for propagation, titration, and purification of Asian and Brazilian ZIKV strains, by systematically testing different cell types, kinetics, multiplicity of infection and centrifugation protocols...
April 23, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28445625/the-use-of-an-occlusion-perfusion-catheter-to-deliver-paclitaxel-to-the-arterial-wall
#2
Marzieh K Atigh, Emily Turner, Uwe Christians, Saami K Yazdani
AIM: Non-stent drug delivery platforms have recently emerged as an alternative treatment of peripheral arterial disease. Perfusion catheters have the potential to directly deliver anti-proliferative agents to the medial arterial layer to prevent restenosis. The purpose of this study was to therefore determine the effectiveness of a perfusion catheter to deliver paclitaxel, a proven anti-proliferative agent, to combat restenosis. METHODS: A bench-top model was utilized to determine the varying parameters of a novel occlusion perfusion catheter to maximize paclitaxel delivery using pharmacokinetic evaluation and fluorescent microscopy...
April 26, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28445501/out-of-hospital-cardiac-arrest-survival-in-drug-related-versus-cardiac-causes-in-ontario-a-retrospective-cohort-study
#3
Aaron M Orkin, Chun Zhan, Jason E Buick, Ian R Drennan, Michelle Klaiman, Pamela Leece, Laurie J Morrison
BACKGROUND: Drug overdose causes approximately 183,000 deaths worldwide annually and 50,000 deaths in Canada and the United States combined. Drug-related deaths are concentrated among young people, leading to a substantial burden of disease and loss of potential life years. Understanding the epidemiology, patterns of care, and prognosis of drug-related prehospital emergencies may lead to improved outcomes. METHODS: We conducted a retrospective cohort study of out-of-hospital cardiac arrests with drug-related and presumed cardiac causes between 2007 and 2013 using the Toronto Regional RescuNet Epistry database...
2017: PloS One
https://www.readbyqxmd.com/read/28445146/autophagy-and-mitophagy-in-the-context-of-doxorubicin-induced-cardiotoxicity
#4
REVIEW
Navid Koleini, Elissavet Kardami
Doxorubicin (Dox) is a cytotoxic drug widely incorporated in various chemotherapy protocols. Severe side effects such as cardiotoxicity, however, limit Dox application. Mechanisms by which Dox promotes cardiac damage and cardiomyocyte cell death have been investigated extensively, but a definitive picture has yet to emerge. Autophagy, regarded generally as a protective mechanism that maintains cell viability by recycling unwanted and damaged cellular constituents, is nevertheless subject to dysregulation having detrimental effects for the cell...
April 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28445052/facile-preparation-of-drug-loaded-tristearin-encapsulated-superparamagnetic-iron-oxide-nanoparticles-using-coaxial-electrospray-processing
#5
Manoochehr Rasekh, Zeeshan Ahmad, Richard Barrie Michael Cross, Javier Hernández Gil, James D E T Wilton-Ely, Philip W Miller
Naturally occurring polymers are promising biocompatible materials that have many applications for emerging therapies, drug delivery systems and diagnostic agents. The handling and processing of such materials still constitutes a major challenge which can limit the full exploitation of their properties. This study explores an ambient environment processing technique: coaxial electrospray (CO-ES) to encapsulate genistein (an isoflavonoid and model drug), superparamagnetic iron oxide nanoparticles (SPIONs, 10-15 nm) and a fluorophore (BODIPY) into a layered (triglyceride tristearin shell) particulate system, with a view to constructing a theranostic agent...
April 26, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28445002/glucose-metabolism-targeting-therapy-and-withaferin-a-are-effective-for-egfr-tki-induced-drug-tolerant-persisters
#6
Kei Kunimasa, Tatsuya Nagano, Yohei Shimono, Ryota Dokuni, Tatsunori Kiriu, Shuntaro Tokunaga, Daisuke Tamura, Masatsugu Yamamoto, Motoko Tachihara, Kazuyuki Kobayashi, Miyako Satouchi, Yoshihiro Nishimura
In pathway-targeted cancer drug therapies, the relatively rapid emergence of drug-tolerant persisters (DTPs) substantially limits the overall therapeutic benefit. However, little is known about the roles of DTPs in drug resistance. In this study, we investigated the features of EGFR-TKI induced DTPs and explored a new treatment strategy to overcome the emergence of these DTPs. We used two EGFR mutated lung adenocarcinoma cell lines, PC9 and II-18. They were treated with 2 μM gefitinib for 6, 12, or 24 days or 6 month...
April 26, 2017: Cancer Science
https://www.readbyqxmd.com/read/28444484/effectiveness-of-drug-camps-in-treatment-of-substance-abuse-in-thailand
#7
Manop Kanato, Poonrut Leyatikul
Various drug camps have been introduced in Thailand since the 2000s. This study explored the effects of drug camps in Thailand. Four provinces were selected to represent different region throughout Thailand. Assessments of 2679 drug users were carried out longitudinally, age ranging from 11 to 67 years old; assessments occurred before camp, after camps, and after a 1 year follow-up. Two hundred twenty-six camps organizers, community leaders, and lay people were selected as key informants. Twenty communities were observed prospectively and 400 lay people were studied...
April 25, 2017: Journal of Community Health
https://www.readbyqxmd.com/read/28444383/optimizing-drug-dose-alerts-using-commercial-software-throughout-an-integrated-health-care-system
#8
Salim M Saiyed, Peter J Greco, Glenn Fernandes, David C Kaelber
All default electronic health record and drug reference database vendor drug-dose alerting recommendations (single dose, daily dose, dose frequency, and dose duration) were silently turned on in inpatient, outpatient, and emergency department areas for pediatric-only and nonpediatric-only populations. Drug-dose alerts were evaluated during a 3-month period. Drug-dose alerts fired on 12% of orders (104 098/834 911). System-level and drug-specific strategies to decrease drug-dose alerts were analyzed. System-level strategies included: (1) turning off all minimum drug-dosing alerts, (2) turning off all incomplete information drug-dosing alerts, (3) increasing the maximum single-dose drug-dose alert threshold to 125%, (4) increasing the daily dose maximum drug-dose alert threshold to 125%, and (5) increasing the dose frequency drug-dose alert threshold to more than 2 doses per day above initial threshold...
April 24, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28444174/catheter-ablation-for-ventricular-tachycardia-in-patients-with-cardiac-sarcoidosis-a-systematic-review
#9
Nikolaos Papageorgiou, Rui Providência, Konstantinos Bronis, Dirk G Dechering, Neil Srinivasan, Lars Eckardt, Pier D Lambiase
Aims: Cardiac sarcoidosis (CS) is associated with a poor prognosis. Important features of CS include heart failure, conduction abnormalities, and ventricular arrhythmias. Ventricular tachycardia (VT) is often refractory to antiarrhythmic drugs (AAD) and immunosuppression. Catheter ablation has emerged as a treatment option for recurrent VT. However, data on the efficacy and outcomes of VT ablation in this context are sparse. Methods and results: A systematic search was performed on PubMed, EMBASE, and Cochrane database (from inception to September 2016) with included studies providing a minimum of information on CS patients undergoing VT ablation: age, gender, VT cycle length, CS diagnosis criteria, and baseline medications...
April 21, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28444098/the-cerebrospinal-fluid-in-multiple-sclerosis-far-beyond-the-bands
#10
Renan Barros Domingues, Gustavo Bruniera Peres Fernandes, Fernando Brunale Vilela de Moura Leite, Charles Peter Tilbery, Rodrigo Barbosa Thomaz, Gisele Sampaio Silva, Cristóvão Luis Pitangueira Mangueira, Carlos Augusto Senne Soares
The cerebrospinal fluid analysis has been employed for supporting multiple sclerosis diagnosis and ruling out the differential diagnoses. The most classical findings reflect the inflammatory nature of the disease, including mild pleocytosis, mild protein increase, intrathecal synthesis of immunoglobulin G, and, most typically, the presence of oligoclonal bands. In recent years, new biomarkers have emerged in the context of multiple sclerosis. The search for new biomarkers reflect the need of a better evaluation of disease activity, disease progression, and treatment efficiency...
January 2017: Einstein
https://www.readbyqxmd.com/read/28443986/minimal-inhibitory-concentration-distributions-and-epidemiological-cutoff-values-of-five-antifungal-agents-against-sporothrix-brasiliensis
#11
Rodrigo Almeida-Paes, Fábio Brito-Santos, Maria Helena Galdino Figueiredo-Carvalho, Ana Caroline Sá Machado, Manoel Marques Evangelista Oliveira, Sandro Antonio Pereira, Maria Clara Gutierrez-Galhardo, Rosely Maria Zancopé-Oliveira
BACKGROUND: Sporothrix brasiliensis is the most virulent sporotrichosis agent. This species usually responds to antifungal drugs, but therapeutic failure can occur in some patients. Antifungal susceptibility tests have been performed on this species, but no clinical breakpoints (CBPs) are available. In this situation, minimal inhibitory concentration (MIC) distributions and epidemiological cutoff values (ECVs) support the detection of identification of resistant strains. OBJECTIVES: To study the MIC distributions of five antifungal drugs against S...
May 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28443923/use-of-alcl3-in-friedel-crafts-arylation-type-reactions-and-beyond-an-overview-on-the-development-of-unique-methodologies-leading-to-n-heteroarenes
#12
REVIEW
Rajnikanth Sunke, Suresh Babu Nallapati, Jetta Sandeep Kumar, K Shiva Kumar, Manojit Pal
As a privileged class of heterocyclic compounds N-heteroarenes have found enormous applications in many areas including medicinal/pharmaceutical chemistry and drug discovery. Consequently, a wide variety of methods have been reported for their synthesis. While not free from their own limitations the AlCl3 mediated methods appeared to have some particular advantages in preparing a number of useful N-heteroarenes. Besides the famous Friedel-Crafts (FC) alkylation/acylation reactions one such example is AlCl3-induced heteroarylation of arenes and heteroarenes (FC arylation type reactions) that can be used to prepare a certain class of N-heteroarenes in an operationally simple, efficient and cost effective manner...
April 26, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28443600/retroauricular-approach-for-targeted-cochlear-therapy-experiments-in-wistar-albino-rats
#13
Selçuk Mülazimoğlu, Emre Ocak, Gülşah Kaygusuz, Mustafa Kürşat Gökcan
BACKGROUND: As the idea of stem cell technology in the treatment of sensorial hearing loss has emerged over the past decades, the need for in vivo models for related experiments becomes explicit. One of the most common experimental models for inner ear stem cell delivery experiments is the Wistar albino rat (WAR). AIMS: To investigate the surgical anatomy of the temporal bone of the WAR with respect to the dissection steps, operative techniques, and potential pitfalls from surgery...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28443518/limitations-of-current-therapeutic-options-possible-drug-targets-and-scope-of-natural-products-in-control-of-leishmaniasis
#14
Neeraj Tiwari, Mallikarjuna Rao Gedda, Vinod K Tiwari, Surya P Singh, Rakesh K Singh
Soon after the identification of Leishmania parasites,the pentavalent antimony compounds have been the mainstay to treat leishmanial infections, worldwide. These compounds were also considered true antileishmanial but the growing incidences of resistance have forced clinicians to use other options. However, due to unavailability of antileishmanial compounds, few drugs like pentamidine (antimicrobial), amphotericin B (antifungal) or miltefosine (antitumor) agents, which are associated with serious side effects, are currently being used...
April 24, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28443354/optimization-of-intelligent-infusion-pump-technology-to-minimize-vasopressor-pump-programming-errors
#15
Nina Vadiei, Carrie A Shuman, Manasa S Murthy, Mitchell J Daley
STUDY OBJECTIVE: To determine if incorporation of vasopressor upper hard limits (UHL) into intelligent infusion pump technology (IIPT) increases efficacy of alerts by preventing pump programming errors. DESIGN & METHODS: Retrospective review from five hospitals within a single healthcare network between April 1, 2013 and May 31, 2014. A total of 65,680 vasopressor data entries were evaluated; 19,377 prior to hard limit implementation and 46,303 after hard limit implementation...
April 26, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28443249/francisella-tularensis-susceptibility-to-antibiotics-a-comprehensive-review-of-the-data-obtained-in-vitro-and-in-animal-models
#16
REVIEW
Yvan Caspar, Max Maurin
The antibiotic classes that are recommended for tularaemia treatment are the aminoglycosides, the fluoroquinolones and the tetracyclines. However, cure rates vary between 60 and 100% depending on the antibiotic used, the time to appropriate antibiotic therapy setup and its duration, and the presence of complications, such as lymph node suppuration. Thus, antibiotic susceptibility testing (AST) of F. tularensis strains remains of primary importance for detection of the emergence of antibiotic resistances to first-line drugs, and to test new therapeutic alternatives...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28443154/drug-induced-liver-injury-do-we-know-everything
#17
REVIEW
Tamara Alempijevic, Simon Zec, Tomica Milosavljevic
Interest in drug-induced liver injury (DILI) has dramatically increased over the past decade, and it has become a hot topic for clinicians, academics, pharmaceutical companies and regulatory bodies. By investigating the current state of the art, the latest scientific findings, controversies, and guidelines, this review will attempt to answer the question: Do we know everything? Since the first descriptions of hepatotoxicity over 70 years ago, more than 1000 drugs have been identified to date, however, much of our knowledge of diagnostic and pathophysiologic principles remains unchanged...
April 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28442909/tat-functionalized-liposomes-for-the-treatment-of-meningitis-an-in-vitro-study
#18
Caterina Bartomeu Garcia, Di Shi, Thomas J Webster
Bacterial meningitis has become a global concern, because of the emergence of antibiotic-resistant bacteria. It has been demonstrated that liposomes can enter bacteria, thus providing a possible treatment for numerous infections, including meningitis. Fusogenic liposomes are pH-sensitive with a high capacity to fuse with the bacteria membrane and promote intracellular drug release. Moreover, this ability can be improved by using cell-penetrating peptides (such as Tat47-57, which is a peptide derived from the Tat protein of HIV)...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28442805/proton-pump-inhibitors-are-associated-with-a-reduced-likelihood-for-sexually-transmitted-diseases-in-women-in-the-emergency-department
#19
Johnathan Michael Sheele, Nathan Morris, Donald Byars, Frank Counselman
BACKGROUND: Proton pump inhibitors (PPIs) have been shown in cell culture to kill Trichomonas vaginalis (TV) at lower half maximal inhibitory concentration values than metronidazole (Flagyl), the most common medication used to treat the infection. However, there have been no previous clinical investigations to determine if PPIs are associated with reduced risk for TV. MATERIALS AND METHODS: We examined the records of female patients who received testing in the emergency department for TV, Neisseria gonorrhoea (GC), and Chlamydia trachomatis (CT) between 2010 and 2014 at two academic medical centers to determine if PPI and histamine type 2 receptor antagonist (H2RA) drugs were associated with TV and GC/CT infections...
January 2017: Indian Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28442797/pre-and-post-sexual-exposure-prophylaxis-of-hiv-an-update
#20
REVIEW
Yogesh S Marfatia, Sheethal K Jose, Reema R Baxi, Ruchi J Shah
Pitfalls in current HIV prevention strategies include late HIV testing, vulnerability among youth and females; lack of emphasis on treatment, low acceptance of circumcision, and nonavailability of protective vaccines. Continuing high-risk sexual behavior, forceful sex, coercive and nonconsensual sex, rape, and unprotected sexual activities make women the most vulnerable to acquisition of sexually transmitted infection/HIV and necessitates a more radical approach of prevention in high-risk individuals who do not have HIV...
January 2017: Indian Journal of Sexually Transmitted Diseases
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