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https://www.readbyqxmd.com/read/28549301/ecotoxicological-effect-of-ketamine-evidence-of-acute-chronic-and-photolysis-toxicity-to-daphnia-magna
#1
Shih-Wei Li, Yu-Hsiang Wang, Angela Yu-Chen Lin
Ketamine has been increasingly used in medicine and has the potential for abuse or illicit use around the world. Ketamine cannot be removed by conventional wastewater treatment plants. Although ketamine and its metabolite norketamine have been detected to a significant degree in effluents and aquatic environments, their ecotoxicity effects in aquatic organisms remain undefined. In this study, we investigated the acute toxicity of ketamine and its metabolite, along with the chronic reproductive toxicity of ketamine (5-100μg/L) to Daphnia magna...
May 23, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28549280/protocols-for-the-analytical-characterization-of-therapeutic-monoclonal-antibodies-i-non-denaturing-chromatographic-techniques
#2
Alexandre Goyon, Valentina D'Atri, Balazs Bobaly, Elsa Wagner-Rousset, Alain Beck, Szabolcs Fekete, Davy Guillarme
Size-, charge- and hydrophobicity-related variants of a biopharmaceutical product have to be deeply characterized for batch consistency and for the assessment of immunogenicity and safety effects. Size exclusion chromatography (SEC) and ion exchange chromatography (IEX) are considered as the gold standard for the analysis of high molecular weight species (HMWS) and charge-related variants, respectively. Hydrophobic interaction chromatography (HIC) has drawn renewed attention to monitor the small drug payload distribution in the cysteine-linked antibody-drug conjugates (ADC)...
May 11, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28549260/identification-of-oral-cavity-biofilm-forming-bacteria-and-determination-of-their-growth-inhibition-by-acacia-arabica-tamarix-aphylla-l-and-melia-azedarach-l-medicinal-plants
#3
Muhammad Khalid, Danial Hassani, Muhammad Bilal, Zahid Ali Butt, Muhammad Hamayun, Ayaz Ahmad, Danfeng Huang, Anwar Hussain
OBJECTIVE: Biofilms are complex, multi-species bacterial communities that colonize the oral cavity in the form of plaque and are known to cause dental caries and periodontal disease. Present study demonstrated the potential of three selected medicinal plants against isolated and identified dental biofilm forming strains. METHODS: Pathogenic bacteria from dental biofilms were isolated, cultured, identified by phylogenetic analysis using PCR-based 16S ribosomal RNA (or 16S rRNA) nucleotide sequences and were analyzed for their biofilm forming capability...
May 18, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28549238/risk-factors-and-mechanisms-contributing-to-tki-induced-vascular-events-in-patients-with-cml
#4
REVIEW
Peter Valent, Emir Hadzijusufovic, Gregor Hoermann, Wolfgang Füreder, Gerit-Holger Schernthaner, Wolfgang R Sperr, Rudolf Kirchmair, Dominik Wolf
Vascular adverse events (VAE) are an emerging problem in patients with chronic myeloid leukemia (CML) receiving second-generation BCR-ABL1 tyrosine kinase inhibitors (TKI). Relevant VAE comprise peripheral, cerebral, and coronary artery changes in patients receiving nilotinib, venous and arterial occlusive events during ponatinib therapy, and pulmonary hypertension in patients receiving dasatinib. Although each TKI binds to a unique profile of molecular targets in leukemic cells and vascular cells, the exact etiology of drug-induced vasculopathies remains uncertain...
May 12, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28549119/systematic-review-of-cost-effectiveness-of-myocardial-perfusion-scintigraphy-in-patients-with-ischaemic-heart-disease-a-report-from-the-cardiovascular-committee-of-the-european-association-of-nuclear-medicine-endorsed-by-the-european-association-of-cardiovascular
#5
Elin Trägårdh, Siok Swan Tan, Jan Bucerius, Alessia Gimelli, Oliver Gaemperli, Oliver Lindner, Denis Agostini, Christopher Übleis, Roberto Sciagrà, Riemer H Slart, S Richard Underwood, Fabien Hyafil, Marcus Hacker, Hein J Verberne
Coronary artery disease (CAD) is a major cause of death and disability. Several diagnostic tests, such as myocardial perfusion scintigraphy (MPS), are accurate for the detection of CAD, as well as having prognostic value for the prediction of cardiovascular events. Nevertheless, the diagnostic and prognostic value of these tests should be cost-effective and should lead to improved clinical outcome. We have reviewed the literature on the cost-effectiveness of MPS in different circumstances: (i) the diagnosis and management of CAD; (ii) comparison with exercise electrocardiography (ECG) and other imaging tests; (iii) as gatekeeper to invasive coronary angiography (ICA), (iv) the impact of appropriate use criteria; (v) acute chest pain, and (vi) screening of asymptomatic patients with type-2 diabetes...
May 26, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28549078/herod-a-human-ethnic-and-regional-specific-omics-database
#6
Xian Zeng, Lin Tao, Zhang Peng, Chu Qin, Shangying Chen, Weidong He, Ying Tan, Hong Xia Liu, Sheng Yong Yang, Zhe Chen, Yu Yang Jiang, Yu Zong Chen
Motivation: Genetic and gene expression variations within and between populations and across geographical regions have substantial effects on the biological phenotypes, diseases, and therapeutic response. The development of precision medicines can be facilitated by the OMICS studies of the patients of specific ethnicity and geographic region. However, there is an inadequate facility for broadly and conveniently accessing the ethnic and regional specific OMICS data. Results: Here, we introduced a new free database, HEROD, a human ethnic and regional specific OMICS database...
May 26, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28548988/toward-precision-medicine-tailoring-interventional-strategies-based-on-noninvasive-brain-stimulation-for-motor-recovery-after-stroke
#7
Philipp J Koch, Friedhelm C Hummel
PURPOSE OF REVIEW: To support the recovery of disability and the reduced functional capacity influencing the independence of daily life after focal brain lesions like stroke, the application of noninvasive brain stimulation (NIBS) by repetitive transcranial magnetic stimulation or transcranial electric stimulation has been found useful in the last decades. Still, a positive influence on the recovery seems to be restricted to specific subgroups of patients. Therefore, a closer look on individual parameters influencing the recovery course and the effect of NIBS is needed...
May 25, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28548955/exploring-brusatol-as-a-new-anti-pancreatic-cancer-adjuvant-biological-evaluation-and-mechanistic-studies
#8
Zheng Lu, Zheng-Quan Lai, Albert W N Leung, Po Sing Leung, Zhao-Shen Li, Zhi-Xiu Lin
Pancreatic cancer is highly resistant to chemotherapeutic agents and is known to have a poor prognosis. The development of new therapeutic entities is badly needed for this deadly malignancy. In this study, we demonstrated for the first time that brusatol, a natural quassinoid isolated from a Chinese herbal medicine named Bruceae Fructus, possessed potent cytotoxic effect against different pancreatic adenocarcinoma cell lines. Its anti-pancreatic cancer effect was comparable to that of the first-line chemotherapeutic agents such as gemcitabine and 5-fluorouracil, with a more favorable safety profile...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548608/a-descriptive-review-of-additional-risk-minimisation-measures-applied-to-eu-centrally-authorised-medicines-2006-2015
#9
Annalisa Rubino, Esther Artime
BACKGROUND: Guidance on therapeutic risk management, first released in EU in 2005, was updated in 2012-2013 with increased requirements on additional risk minimisation measures (aRMM). This study describes aRMM imposed at initial EU central marketing authorisation of medicines in 2006-2015. METHODS: Non-generic medicines authorised between 01/01/2006 and 31/12/2015 were identified in the European Public Assessment Report (EPAR) database. Data on aRMM, including effectiveness measures were extracted, tabulated and analysed with Excel 2016 for chi-square p value estimates and linear regression modelling as appropriate...
May 26, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28548558/the-role-of-genetic-testing-in-epilepsy-diagnosis-and-management
#10
Yvonne G Weber, Saskia Biskup, Katherine L Helbig, Sarah von Spiczak, Holger Lerche
Epilepsy is a common neurological disorder characterized by recurrent unprovoked seizures. More than 500 epilepsy-associated genes have been described in the literature. Most of these genes play an important role in neuronal excitability, cortical development or synaptic transmission. A growing number of genetic variations have implications on diagnosis and prognostic or therapeutic advice in terms of a personalized medicine. Area covered: The review presents the different forms of genetic epilepsies with respect to their underlying genetic and functional pathophysiology and aims to give advice for recommended genetic testing...
May 26, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28548484/controlled-release-of-naringin-in-metal-organic-frameworks-mofs-loaded-mineralized-collagen-coating-to-simultaneously-enhance-osseointegration-and-antibacterial-activity
#11
Mengfei Yu, Dongqi You, Junjun Zhuang, Suya Lin, Lingqing Dong, Shengtao Weng, Bin Zhang, Kui Cheng, Wen-Jian Weng, Huiming Wang
Two important goals in orthopedic implants research are to promote osseointegration and prevent infection. However, much of previous efforts have been paid on the design of coatings either to enhance osseointegration while ignoring antibacterial activity or vice versa, to prevent infection while ignoring bone integration. Here, we designed a multifunctional mineralized collagen coating on titanium with the aid of metal-organic frameworks (MOFs) nanocrystals to control the release of naringin, a Chinese herbal medicine which could promote osseointegration and prevent bacterial infection...
May 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28548478/influencing-of-antioxidants-gene-variants-on-risk-of-diabetes-mellitus-and-its-complications-a-systematic-review
#12
Fatemeh Bitarafan, Mehrnoosh Khodaeian, Ozra Tabatabaei-Malazy, Mahsa M Amoli
INTRODUCTION: Oxidative stress has a key role in pathophysiology of type 2 diabetes mellitus (T2DM) and its complications as a most common health problem. Due to controversial evidence regarding the association between antioxidants' gene varients and T2DM, our aim was a systematic review of the current meta-analyses. EVIDENCE ACQUISTION: All meta-analysis' studies which assessed the association of single nucleotide polymorphisms of superoxide dismutase (SOD), catalase, glutathione peroxidase (GPX), glutathione S transferase (GST), nitric oxide synthase (NOS) and nicotinamide adenine dinucleotide phosphate oxidase (NOX) with T2DM and its complications were systematically extracted from PubMed, Scopus and Web of Science databases up to January 2016...
May 26, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28548477/the-100-most-cited-articles-focused-on-thyroid-research-a-bibliometric-analysis
#13
Eun S Kim, Dae Y Yoon, Ki-Won Oh, Won-Young Lee, Eun-Joo Yun, Young L Seo, Young-Soo Rho
BACKGROUND: The number of citations that an article has received reflects its impact on a particular research area. METHODS: We determined the 100 most-cited articles in thyroid research via the Institute for Scientific Information Web of Knowledge database, using the search term. The following parameters were used to analyze the characteristics of the 100 most-cited articles: publication year, journal (including subject category and impact factor), number of citations and annual citations, authors, department, institution, country, type of study, and topic...
May 26, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28548370/current-state-of-a-dual-behavior-of-antimicrobial-peptides-therapeutic-agents-and-promising-delivery-vectors
#14
REVIEW
Urszula Piotrowska, Marcin Sobczak, Ewa Oledzka
Microorganism resistance is an important challenge in modern medicine due to the global uncontrolled use of antibiotics. Natural and synthetic antimicrobial peptides (AMPs) symbolize a new family of antibiotics, which have stimulated research and clinical interest as new therapeutic options for infections. They represent one of the most promising antimicrobial substances, due to their broad spectrum of biological activity, against bacteria, fungi, protozoa, viruses, yeast and even tumour cells. Besides, being antimicrobial, AMPs have been shown to bind and neutralize bacterial endotoxins, as well as possess immunomodulatory, anti-inflammatory, wound-healing, angiogenic and antitumour properties...
May 26, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28548350/koenig-and-schultz-s-disaster-medicine-comprehensive-principles-and-practices-2nd-ed-edited-by-kristi-l-koenig-carl-h-schultz-new-york-cambridge-university-press-2016-736-pp-index-205-00-hardcover
#15
REVIEW
Eric C Silverman, Mary P Mercer
No abstract text is available yet for this article.
April 27, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28548315/aapm-medical-physics-practice-guideline-8-a-linear-accelerator-performance-tests
#16
Koren Smith, Peter Balter, John Duhon, Gerald A White, David L Vassy, Robin A Miller, Christopher F Serago, Lynne A Fairobent
PURPOSE: The purpose of this guideline is to provide a list of critical performance tests in order to assist the Qualified Medical Physicist (QMP) in establishing and maintaining a safe and effective quality assurance (QA) program. The performance tests on a linear accelerator (linac) should be selected to fit the clinical patterns of use of the accelerator and care should be given to perform tests which are relevant to detecting errors related to the specific use of the accelerator. METHODS: A risk assessment was performed on tests from current task group reports on linac QA to highlight those tests that are most effective at maintaining safety and quality for the patient...
May 26, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28548312/vitamin-d-dependent-rickets-type-1b-25-hydroxylase-deficiency-a-rare-condition-or-a-misdiagnosed-condition
#17
Molin A, Wiedemann A, Demers N, Kaufmann M, Do Cao J, Mainard L, Dousset B, Journeau P, Abeguile G, Coudray N, Mittre H, Richard N, Weryha G, Sorlin A, Jones G, Kottler Ml, Feillet F
Vitamin D requires a two-step activation by hydroxylation: the first step is catalyzed by hepatic 25-hydroxylase (CYP2R1, 11p15.2), and the second one is catalyzed by renal 1α-hydroxylase (CYP27B1, 12q13.1), which produces the active hormonal form of 1,25-(OH)2 D. Mutations of CYP2R1 have been associated with Vitamin D-dependent rickets type 1B (VDDR1B), a very rare condition that has only been reported to affect 4 families to date. We describe 7 patients from two unrelated families who presented with homozygous loss-of-function mutations of CYP2R1...
May 26, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28548249/m%C3%A3-ller-glial-cell-reactivation-in-xenopus-models-of-retinal-degeneration
#18
Rahul Langhe, Albert Chesneau, Gabriele Colozza, Magdalena Hidalgo, Divya Ail, Morgane Locker, Muriel Perron
A striking aspect of tissue regeneration is its uneven distribution among different animal classes, both in terms of modalities and efficiency. The retina does not escape the rule, exhibiting extraordinary self-repair properties in anamniote species but extremely limited ones in mammals. Among cellular sources prone to contribute to retinal regeneration are Müller glial cells, which in teleosts have been known for a decade to re-acquire a stem/progenitor state and regenerate retinal neurons following injury...
May 26, 2017: Glia
https://www.readbyqxmd.com/read/28548196/-declaration-of-the-chilean-academy-of-medicine-of-law-20-850-%C3%A2-on-clinical-trials-of-pharmaceutical-products-and-medical-devices%C3%A2-and-of-the-bylaw-that-will-regulate-its-application
#19
Gloria López S, Gloria Valdés S, Emilio Roessler B, Vicente Valdivieso D
In Chile, high cost treatments required by selected medical conditions are financed by the State, according to Law 20.850. A bylaw under discussion by the Senate regulates clinical trials, posing complex issues that will endanger local interest in front-line research: 1. The exclusive and mandatory control bestowed to the Institute of Public Health during all stages of the trials and also the surveillance of institutions performing clinical trials, overriding their Clinical Research Review Boards; 2.The 10 year period during which any adverse event is assumed to have been caused by the medication or devise evaluated by the trial, unless the contrary is proven in a judicial process; 3...
March 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28548186/-cardiovascular-risk-factors-among-first-and-third-year-university-students
#20
Gladys Morales, Francisco Guillen-Grima, Sergio Muñoz, Carlos Belmar, Ingrid Schifferli, Andrea Muñoz, Alvaro Soto
BACKGROUND: College students are in a critical stage in their life style due to the transition between high school and university and they may be prone to develop cardiovascular diseases. AIM: To compare the prevalence of cardiovascular risk factors (CVRF) in students from first and third year at the University of La Frontera, Temuco-Chile, according to faculty, gender and socioeconomic status (SES). MATERIAL AND METHODS: Cross-sectional study...
March 2017: Revista Médica de Chile
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