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https://www.readbyqxmd.com/read/28328898/more-than-3rs-the-importance-of-scientific-validity-for-harm-benefit-analysis-of-animal-research
#1
Hanno Würbel
No abstract text is available yet for this article.
March 22, 2017: Lab Animal
https://www.readbyqxmd.com/read/28322894/inflammation-and-immunogenicity-limit-the-utility-of-the-rabbit-as-a-nonclinical-species-for-ocular-biologic-therapeutics
#2
Christina L Zuch de Zafra, Vito G Sasseville, Steven Matsumoto, Christian Freichel, Mark Milton, Timothy K MacLachlan, Cindy Farman, Iona Raymond, Swati Gupta, Ronald Newton, Elke-Astrid Atzpodien, Evan A Thackaberry
The nonclinical safety evaluation of therapeutic drug candidates is commonly conducted in two species (rodent and non-rodent) in keeping with international health authority guidance. Biologic drugs typically have restricted species cross-reactivity, necessitating the evaluation of safety in non-human primates and thus limiting the utility of lower order species. Safety studies of cross-reactive ocular biologic drug candidates have been conducted in rabbits as a second toxicology species, despite the fact that rabbits are not a rodent species...
March 16, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28321041/evaluation-of-a-general-toxicity-study-incorporating-phototoxicity-assessments-in-sprague-dawley-rats
#3
Yutaka Yonezawa, Taishi Miyashita, Hiroko Ashizawa, Kazuto Hashimoto, Hiroaki Nejishima, Haruko Ogawa
Previously, we showed that phototoxicity assessments in Sprague-Dawley (SD) rats can detect phototoxic potential to the same degree as those in guinea pigs. In this study, we examined whether phototoxicity assessments can be incorporated into general toxicology studies, using SD rats. Three phototoxic compounds were tested. Acridine and 8-methoxypsoralen (8-MOP) were transdermally administered, and 8-MOP and lomefloxacin were orally administered. The animals were allocated to three groups for each compound: single-dose, repeated-dose, and repeated-dose plus toxicokinetics (TK)...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28263526/bioindicators-of-wastewater-ecotoxicity
#4
Gabriela Jirova, Zdenka Wittlingerova, Magdalena Zimova, Alena Vlkova, Martina Wittlerova, Marketa Dvorakova, Dagmar Jirova
Wastewater, especially containing hospital effluents, exhibits high chemical complexity and specificity since it includes various chemicals, biocides, pharmaceuticals, surfactants, radionuclides, disinfectants and pathogens. Biological tests provide true evidence of the wastewater quality and unlike chemical analytical tests show comprehensive pollution effects on the environment and human health. Normalized conventional bioassays are not sensitive enough for ecotoxicological evaluation of wastewater and there is a great need for the development of suitable sensitive bioassays in order to characterize properly the residual toxicity of treated effluents...
December 18, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28251926/phospho-regulation-of-tau-modulates-inhibition-of-kinesin-1-motility
#5
Jamie L Stern, Dominique V Lessard, Gregory J Hoeprich, Gerardo A Morfini, Christopher L Berger
Microtubule-based axonal transport is tightly regulated by numerous pathways ensuring appropriate delivery of specific organelle cargoes to selected subcellular domains. Highlighting the importance of this process, pathological evidence has linked alterations in these pathways to the pathogenesis of several neurodegenerative diseases. An important regulator of this system, the microtubule associated protein Tau has been shown to participate in signaling cascades, modulate microtubule dynamics and preferentially inhibit kinesin-1 motility...
March 1, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28245867/detection-of-schistosoma-antibodies-and-exploration-of-associated-factors-among-local-residents-around-inlay-lake-southern-shan-state-myanmar
#6
Htin Zaw Soe, Cho Cho Oo, Tin Ohn Myat, Nay Soe Maung
BACKGROUND: Schistosomiasis is a chronic parasitic disease caused by blood flukes (trematode worms) of the genus Schistosoma. Its transmission has been reported in 78 countries affecting at least 258 million people world-wide. It was documented that S. japonicum species was prevalent in Shan State, Myanmar, but the serological study was not conducted yet. General objective of the present study was to detect schistosoma antibodies and explore associated factors among local residents living around Inlay Lake, Nyaung Shwe Township, and Southern Shan State, Myanmar...
March 1, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28215928/human-platelet-lysate-is-a-successful-alternative-serum-supplement-for-propagation-of-monocyte-derived-dendritic-cells
#7
Urban Švajger
BACKGROUND AIMS: Clinical protocols for dendritic cell (DC) generation from monocytes require the use of animal serum-free supplements. Serum-free media can also require up to 1% of serum supplementation. In addition, recommendations based on the 3Rs (Refinement, Reduction, Replacement) principle also recommend the use of non-animal sera in in vitro studies. The aim of this study was to explore the potential use of platelet lysate (PL) for generation of optimally differentiated DCs from monocytes...
February 16, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28214916/facial-expression-an-under-utilised-tool-for-the-assessment-of-welfare-in-mammals
#8
Kris A Descovich, Jennifer Wathan, Matthew C Leach, Hannah M Buchanan-Smith, Paul Flecknell, David Farningham, Sarah-Jane Vick
Animal welfare is a key issue for industries that use or impact upon animals. The accurate identification of welfare states is particularly relevant to the field of bioscience, where the 3Rs framework encourages refinement of experimental procedures involving animal models. The assessment and improvement of welfare states in animals is reliant on reliable and valid measurement tools. Behavioural measures (activity, attention, posture and vocalisation) are frequently used because they are immediate and non-invasive, however no single indicator can yield a complete picture of the internal state of an animal...
February 8, 2017: ALTEX
https://www.readbyqxmd.com/read/28170173/the-3rs-of-cell-therapy
#9
Arnold I Caplan, Chris Mason, Brock Reeve
The 3Rs for a good education are "reading, 'riting, and 'rithmetic." The basis for good health care solutions for the emergent field of cell therapy in the future will also involve 3Rs: regulation, reimbursement, and realization of value. The business models in this new field of cell therapy will involve these 3Rs. This article brings forth realities facing this new industry for its approaches to provide curative health care solutions. Stem Cells Translational Medicine 2017;6:17-21.
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28150005/gauging-circadian-variation-in-ketamine-metabolism-by-real-time-breath-analysis
#10
P Martinez-Lozano Sinues, M Kohler, S A Brown, R Zenobi, R Dallmann
The time-of-day of drug application is an important factor in maximizing efficacy and minimizing toxicity. Real-time in vivo mass spectrometric breath analysis of mice was deployed to investigate time-of-day variation in ketamine metabolism. Different production rates of ketamine metabolites, including the recently described anti-depressant hydroxynorketamine, were found in opposite circadian phases. Thus, breath analysis has potential as a rapid and 3Rs (Replacement, Reduction and Refinement) conforming screening method to estimate the time-dependence of drug metabolism...
February 14, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28149193/sheep-as-an-experimental-model-for-biomaterial-implant-evaluation
#11
Suelen Cristina Sartoretto, Marcelo José Uzeda, Fúlvio Borges Miguel, Jhonathan Raphaell Nascimento, Fabio Ascoli, Mônica Diuana Calasans-Maia
OBJECTIVE: Based on a literature review and on our own experience, this study proposes sheep as an experimental model to evaluate the bioactive capacity of bone substitute biomaterials, dental implant systems and orthopedics devices. The literature review covered relevant databases available on the Internet from 1990 until to date, and was supplemented by our own experience. METHODS: For its resemblance in size and weight to humans, sheep are quite suitable for use as an experimental model...
September 2016: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28095847/the-biomedical-piglet-establishing-reference-intervals-for-haematology-and-clinical-chemistry-parameters-of-two-age-groups-with-and-without-iron-supplementation
#12
Domenico Ventrella, Francesco Dondi, Francesca Barone, Federica Serafini, Alberto Elmi, Massimo Giunti, Noemi Romagnoli, Monica Forni, Maria L Bacci
BACKGROUND: The similarities between swine and humans in physiological and genomic patterns, and the great correlation in size and anatomy, make pigs extremely useful in preclinical studies. New-born piglets can represent a model for congenital and genetic diseases in new-born children. It is known that piglets may have significant differences in clinicopathological results compared to adult pigs. Therefore, adult laboratory reference intervals cannot be applied to piglets. The aim of this study was to compare haematological and chemical variables in piglets of two ages and determinate age-related reference intervals for commercial hybrid young pigs...
January 17, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28076320/solid-waste-management-in-thailand-an-overview-and-case-study-tha-khon-yang-sub-district
#13
Nachalida Yukalang, Beverley Dawn Clarke, Kirstin Elizabeth Ross
Due to rapid urbanization, solid waste management (SWM) has become a significant issue in several developing countries including Thailand. Policies implemented by the Central Thai Government to manage SWM issues have had only limited success. This article reviews current municipal waste management plans in Thailand and examines municipal waste management at the local level, with focus on the Tha Khon Yang sub-district surrounding Mahasarakham University in Mahasarakham Province. Within two decades this area has been converted from a rural to an urban landscape featuring accommodation for over 45,000 university students and a range of business facilities...
January 11, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28073930/editorial-3rs-tightly-intertwined-to-maintain-genome-stability
#14
EDITORIAL
Michael Lisby, Uffe H Mortensen
No abstract text is available yet for this article.
January 10, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28057168/evaluation-and-optimization-of-blood-micro-sampling-methods-serial-sampling-in-a-cross-over-design-from-an-individual-mouse
#15
Nita J Patel, Enaksha Wickremsinhe, Yu-Hua Hui, Alexandar Barr, Nicholas Masterson, Kenneth Ruterbories, Jennifer Weller, Jennifer Hanes, Tom Kern, Everett Perkins
PURPOSE: Current practices applied to mouse pharmacokinetic (PK) studies often use large numbers of animals with sporadic or composite sampling that inadequately describe PK profiles.  The purpose of this work was to evaluate and optimize blood microsampling techniques coupled with dried blood spot (DBS) and LC-MS/MS analysis to generate reliable PK data in mice.  In addition, the feasibility of cross-over designs was assessed and recommendations are presented. METHODS: The work describes a comprehensive evaluation of five blood microsampling techniques (tail clip, tail vein with needle hub, submandibular, retro-orbital, and saphenous bleeding) in CD-1 mice...
October 2016: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28053077/animal-research-the-3rs-and-the-internet-of-things-opportunities-and-oversight-in-international-pharmaceutical-development
#16
Steven M Niemi, Gail F Davies
Stages of drug (and vaccine) discovery and evaluation that involve laboratory animals increasingly occur via scientific collaborations across national borders and continents. Many of these research collaborations are between asset-rich institutions and others in less wealthy parts of the world. The care and use of laboratory animals in geographically disparate locations introduces new complexities, such as different oversight requirements and available resources, as well as diverse organizational and cultural milieus...
December 2016: ILAR Journal
https://www.readbyqxmd.com/read/28053076/opportunities-to-apply-the-3rs-in-safety-assessment-programs
#17
Fiona Sewell, Joanna Edwards, Helen Prior, Sally Robinson
Before a potential new medicine can be administered to humans it is essential that its safety is adequately assessed. Safety assessment in animals forms an integral part of this process, from early drug discovery and initial candidate selection to the program of recommended regulatory tests in animals. The 3Rs (replacement, reduction, and refinement of animals in research) are integrated in the current regulatory requirements and expectations and, in the EU, provide a legal and ethical framework for in vivo research to ensure the scientific objectives are met whilst minimizing animal use and maintaining high animal welfare standards...
December 2016: ILAR Journal
https://www.readbyqxmd.com/read/28053075/refinement-reduction-and-replacement-of-animal-toxicity-tests-by-computational-methods
#18
Kevin A Ford
Widespread public and scientific interest in promoting the care and well-being of animals used for toxicity testing has given rise to improvements in animal welfare practices and views over time, as well as laws and regulations that support means to reduce, refine, and replace animal use (known as the 3Rs) in certain toxicity studies. One way these regulations continue to achieve their aim is by promoting the research, development, and application of alternative testing approaches to characterize potential toxicities either without animals or with minimal use...
December 2016: ILAR Journal
https://www.readbyqxmd.com/read/28053074/promoting-adoption-of-the-3rs-through-regulatory-qualification
#19
Elizabeth Gribble Walker, Amanda F Baker, John-Michael Sauer
One mechanism to advance the application of novel safety assessment methodologies in drug development, including in silico or in vitro approaches that reduce the use of animals in toxicology studies, is regulatory qualification. Regulatory qualification, a formal process defined at the the U. S. Food and Drug Administration and the European Medicines Agency, hinges on a central concept of stating an appropriate "context of use" for a novel drug development tool (DDT) that precisely defines how that DDT can be used to support decision making in a regulated drug development setting...
December 2016: ILAR Journal
https://www.readbyqxmd.com/read/28053073/in-vivo-imaging-in-pharmaceutical-development-and-its-impact-on-the-3rs
#20
Barry R Campbell, Dinko Gonzalez Trotter, Catherine D G Hines, Wenping Li, Manishkumar Patel, Weisheng Zhang, Jeffrey L Evelhoch
It is well understood that the biopharmaceutical industry must improve efficiency along the path from laboratory concept to commercial product. In vivo imaging is recognized as a useful method to provide biomarkers for target engagement, treatment response, safety, and mechanism of action. Imaging biomarkers have the potential to inform the selection of drugs that are more likely to be safe and effective. Most of the imaging modalities for biopharmaceutical research are translatable to the clinic. In vivo imaging does not require removal of tissue to provide biomarkers, thus reducing the number of valuable preclinical subjects required for a study...
December 2016: ILAR Journal
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