JoVE Application Notes
A demonstration of the advantages in speed, ease of use, and transfer efficiency of the Trans-Blot Turbo transfer system compared to conventional wet tank and semi-dry transfer methods.
Published July 15, 2011. Keywords: Protein transfer, turbo, rapid transfer, blotting, western blot, antigen, antibody, tank transfer, semi-dry, chemiluminescent, membrane
1Great Lakes Science Center, U. S. Geological Survey, 2Annis Water Resources Institute, Grand Valley State University, 3Daniel P. Haerther Center for Conservation and Research, Shedd Aquarium
A technique for laboratory estimation of net trophic transfer efficiency of polychlorinated biphenyl (PCB) congeners to piscivorous fish from their prey is presented. To maximize applicability of the laboratory results to the field, the piscivorous fish should be fed prey fish that are typically eaten in the field.
Published August 29, 2014. Keywords: Environmental Sciences, trophic transfer efficiency, polychlorinated biphenyl congeners, lake trout, activity, contaminants, accumulation, risk assessment, toxic equivalents
1Ophthalmology Department, Center for Vision Research, SUNY Eye Institute, Upstate Medical University
Xenopus laevis tadpoles prefer swimming on the white side of a black/white tank. This behavior is guided by their vision. Based on this behavior, we present a simple assay to test the visual function of tadpoles.
Published June 12, 2014. Keywords: Neuroscience, eye, retina, vision, color preference, Xenopus laevis, behavior, light, guidance, visual assay
1Centre of Excellence for Alzheimer's Disease Research and Care, School of Medical sciences, Edith Cowan University, 2Centre for Clinical Research in Neuropsychiatry, Graylands Hospital, University of Western Australia, 3McCusker Alzheimer's Research foundation, 4School of Medicine and Pharmacology, University of Western Australia, 5Department of Molecular and Biomedical Sciences, University of Adelaide, 6School of Biomedical Sciences, Curtin University of Technology, 7School of Psychiatry and Clinical Neurosciences, University of Western Australia
This protocol outlines regular maintenance and care to maintain optimal conditions for zebrafish husbandry. The video illustrates the protocol for system maintenance, regular housing, feeding, breeding, and raising of zebrafish larvae.
Published November 18, 2012. Keywords: Basic Protocols, Biology, Marine Biology, Zebrafish, Danio rerio, maintenance, breeding, feeding, raising, larvae, animal model, aquarium
1Department of Anatomy and Cell Biology, Wayne State University School of Medicine, 2Department of Opthalmology, Wayne State University School of Medicine
Multiple light damage protocols have been described to damage photoreceptors and consequently induce a retinal regeneration response in adult zebrafish. This protocol describes an improved method that can be used in pigmented animals and that damages the vast majority of rod and cone photoreceptors across the entire retina.
Published October 24, 2013. Keywords: Neuroscience, Zebrafish, Retinal Degeneration, Retina, Photoreceptor, Müller glia, Light damage
1Human Development & Health Academic Unit, Faculty of Medicine, University of Southampton
Pregnancy leads to significant changes to the fatty acid composition of maternal tissues. Lipid profiles can be obtained via gas chromatography to allow identification and quantification of fatty acids in individual lipid classes among rats fed various high and low fat diets during pregnancy.
Published March 13, 2014. Keywords: Chemistry, gas chromatography, fatty acid, pregnancy, cholesteryl ester, solid phase extraction, polyunsaturated fatty acids
1Section of Molecular Genetics and Microbiology, The University of Texas at Austin, 2Department of Chemistry and Biochemistry, The University of Texas at Austin, 3The Institute of Cellular and Molecular Biology, The University of Texas at Austin
Isolation and characterization of the lipid A domain of lipopolysaccharide (LPS) from gram-negative bacteria provides insight into cell surface based mechanisms of antibiotic resistance, bacterial survival and fitness, and how chemically diverse lipid A molecular species differentially modulate host innate immune responses.
Published September 16, 2013. Keywords: Chemistry, Membrane Lipids, Toll-Like Receptors, Endotoxins, Glycolipids, Lipopolysaccharides, Lipid A, Microbiology, Lipids, lipid A, Bligh-Dyer, thin layer chromatography (TLC), lipopolysaccharide, mass spectrometry, Collision Induced Dissociation (CID), Photodissociation (PD)
1Department of Psychiatry, University of Maryland School of Medicine, 2Tulane University School of Medicine, 3Department of Pharmacology and Experimental Therapeutics, University of Maryland School of Medicine, 4The Program in Neuroscience, University of Maryland
The forced swim test is validated as an experimental approach to assess potential antidepressant efficacy in rodents. Experimental animals are placed in a tank of water and escape-related mobility behavior is quantified. The common procedures for the mouse version of this test are described.
Published January 29, 2012. Keywords: Neuroscience, animal models, behavioral analysis, neuroscience, neurobiology, mood disorder, depression, mood stabilizer, antidepressant, forced swimming test, FST
1Department of Biological Sciences, Brock University
We have developed two methods for studying effects of visual cues on behavior in the absence of tactile and chemical cues. One method involves videotaping responses of crayfish to reflective walls in an aquarium; the other examines effects of visual inputs provided by a live crayfish behind a transparent partition.
Published May 14, 2010. Keywords: JoVE Neuroscience, social, chemosensory, behavior, visual, dominance, crayfish
1Department of Organismal Biology and Anatomy, The University of Chicago, 2Committee on Molecular Metabolism and Nutrition, The University of Chicago, 3Department of Medicine, The University of Chicago
We demonstrate intraperitoneal injection into adult zebrafish. We use a 10 μl NanoFil microsyringe controlled by a Micro4 controller and UltraMicroPump III. This demonstration includes the use of cold water as an anesthetic.
Published August 30, 2010. Keywords: medicine, zebrafish, anesthesia, metabolism, fasting