This video shows how to surgically obstruct the guinea pig's endolymphatic duct to produce endolymphatic hydrops.
1Center for Neurosciences, The Feinstein Institute for Medical Research
Multivariate techniques including principal component analysis (PCA) have been used to identify signature patterns of regional change in functional brain images. We have developed an algorithm to identify reproducible network biomarkers for the diagnosis of neurodegenerative disorders, assessment of disease progression, and objective evaluation of treatment effects in patient populations.
Published June 26, 2013. Keywords: Medicine, Neurobiology, Neuroscience, Anatomy, Physiology, Molecular Biology, Basal Ganglia Diseases, Parkinsonian Disorders, Parkinson Disease, Movement Disorders, Neurodegenerative Diseases, PCA, SSM, PET, imaging biomarkers, functional brain imaging, multivariate spatial covariance analysis, global normalization, differential diagnosis, PD, brain, imaging, clinical techniques
1Division of Pediatric Pathology, Department of Pathology and Laboratory Medicine, Medical College of Wisconsin, 2Department of Physiology and Cell Biology, The Ohio State University, 3Department of Human Nutrition, Foods and Exercise, Virginia Tech, 4Division of Biomedical Informatics, Department of Biostatistics, Department of Computer Science, University of Kentucky, 5Division of Genetics and Genomics, The Manton Center for Orphan Disease Research, Boston Children's Hospital, Harvard Medical School, 6Cure Congenital Muscular Dystrophy, 7Joshua Frase Foundation, 8Department of Rehabilitation Medicine, University of Washington, 9Department of Physiology, University of Arizona
The analysis of skeletal muscle tissues to determine structural, functional, and biochemical properties is greatly facilitated by appropriate preparation. This protocol describes appropriate methods to prepare skeletal muscle tissue for a broad range of phenotyping studies.
Overcoming Unresponsiveness in Experimental Autoimmune Encephalomyelitis (EAE) Resistant Mouse Strains by Adoptive Transfer and Antigenic Challenge
Certain mouse strains are able to resist induction of experimental autoimmune encephalomyelitis (EAE) with myelin basic protein. Described here is a simple immunization protocol that reverses the unresponsiveness and induces paralytic disease in several typical EAE resistant mouse stains.
1Division of Renal Diseases and Hypertension, University of Colorado, Denver, 2Department of Integrative Physiology, University of Colorado, Boulder
The degree of vascular dysfunction and contributing physiological mechanisms can be assessed in patients with chronic kidney disease by measuring brachial artery flow-mediated dilation, aortic pulse-wave velocity, and vascular endothelial cell protein expression.
1Division of Bacteriology & Parasitology, Tulane National Primate Research Center, Tulane University Health Sciences Center
Lyme disease is the most commonly-reported vector-borne disease in North America. The causative agent, Borrelia burgdorferi is a spirochete bacterium transmitted by Ixodid ticks. Transmission and detection of infection in animal models is optimized by the use of tick feeding, which we describe here.
Published August 31, 2013. Keywords: Infection, Medicine, Immunology, Infectious Diseases, Biomedical Engineering, Primates, Muridae, Ticks, Borrelia, Borrelia Infections, Ixodes, ticks, Lyme disease, xenodiagnosis, Borrelia, burgdorferi, mice, nonhuman primates, animal model
Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
1Discipline of Exercise and Sport Science, Faculty of Health Sciences, University of Sydney, 2Department of Sport, Health and Exercise Science, University of Hull, 3Academic Vascular Department, Hull Royal Infirmary, Hull and East Yorkshire Hospitals, 4Department of Vascular Surgery, Addenbrookes Hospital
Individuals with intermittent claudication exhibit poor balance compared to healthy controls. Computerized dynamic posturography is an objective method for measuring an individual's postural responses to balance disturbances. This provides an objective reflection of the person’s ability to respond to situations under which sensory stimuli are altered and unexpected perturbations occur.
Published December 11, 2013. Keywords: Medicine, Posture, Computerized dynamic posturography, Ankle brachial pressure index, Peripheral arterial disease, Intermittent claudication, Balance, Posture, EquiTest, Sensory Organization Test, Motor Control Test
1Mellen Center for Multiple Sclerosis Treatment and Research, Cleveland Clinic Foundation, 2Center for Brain Health, Cleveland Clinic Foundation, 3Quantitative Health Sciences, Cleveland Clinic Foundation, 4Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic Foundation
Precise measurement of neurological and neuropsychological impairment and disability in multiple sclerosis is challenging. We report methodologic details on a new test, the Multiple Sclerosis Performance Test (MSPT). This new approach to the objective of quantification of MS related disability provides a computer-based platform for precise, valid measurement of MS severity.
Published June 30, 2014. Keywords: Medicine, Multiple Sclerosis, Multiple Sclerosis Functional Composite, computer-based testing, 25-foot walk test, 9-hole peg test, Symbol Digit Modalities Test, Low Contrast Visual Acuity, Clinical Outcome Measure
1Developmental Biology, Center for Stem Cell Biology, Sloan-Kettering Institute for Cancer Research, 2St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University
Neural crest (NC) cells derived from human pluripotent stem cells (hPSC) have great potential for modeling human development and disease and for cell replacement therapies. Here, a feeder-free adaptation of the currently widely used in vitro differentiation protocol for the derivation of NC cells from hPSCs is presented.
Published May 22, 2014. Keywords: Neuroscience, Embryonic Stem Cells (ESCs), Pluripotent Stem Cells, Induced Pluripotent Stem Cells (iPSCs), Neural Crest, Peripheral Nervous System (PNS), pluripotent stem cells, neural crest cells, in vitro differentiation, disease modeling, differentiation protocol, human embryonic stem cells, human pluripotent stem cells
1Center for Health Sciences, SRI International, 2Department of Chemistry and Biochemistry, University of California-Santa Cruz
Lipoxygenase (LOX) isozymes can generate products that may increase or decrease neuroinflammation and neurodegeneration. A gene-environment interaction study could identify LOX isozyme-specific effects. Using the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) model of nigrostriatal damage in two LOX isozyme-deficient transgenic lines allows for comparison of the contribution of LOX isozymes on dopaminergic integrity and inflammation.
Published January 7, 2014. Keywords: Medicine, MPTP, dopamine, Iba1, TH, GFAP, lipoxygenase, transgenic, gene-environment interactions, mouse, Parkinson's disease, neurodegeneration, neuroinflammation