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Cystic Fibrosis: An autosomal recessive genetic disease of the Exocrine glands. It is caused by mutations in the gene encoding the Cystic fibrosis transmembrane conductance regulator expressed in several organs including the Lung, the Pancreas, the Biliary system, and the Sweat glands. Cystic fibrosis is characterized by epithelial secretory dysfunction associated with ductal obstruction resulting in Airway obstruction; chronic Respiratory infections; Pancreatic insufficiency; maldigestion; salt depletion; and Heat prostration.
 JoVE Immunology and Infection

Deciphering and Imaging Pathogenesis and Cording of Mycobacterium abscessus in Zebrafish Embryos

1Dynamique des Interactions Membranaires Normales et Pathologiques, CNRS, UMR 535, Université Montpellier, 2Centre d'études d'agents Pathogènes et Biotechnologies pour la Santé, CNRS, FRE 3689, Université Montpellier, 3Unité de Formation et de Recherche des Sciences de la Santé, EA3647-EPIM, Université Versailles St Quentin


JoVE 53130

 JoVE Biology

Phenotyping Mouse Pulmonary Function In Vivo with the Lung Diffusing Capacity

1Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, 2Department of International Health, Johns Hopkins University Bloomberg School of Public Health, 3Department of Medicine, Johns Hopkins University School of Medicine


JoVE 52216

 JoVE Medicine

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting

1Murdoch Childrens Research Institute, The Royal Children’s Hospital, 2Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, 3Department of Anatomy and Developmental Biology, Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton


JoVE 52691

 JoVE Medicine

A Novel Surgical Approach for Intratracheal Administration of Bioactive Agents in a Fetal Mouse Model

1Molecular Virology and Gene Therapy, KU Leuven, 2Department of Woman and Child, KU Leuven, 3Neurobiology and Gene Therapy, KU Leuven, 4Division of Nuclear Medicine, KU Leuven, 5Biomedical NMR Unit/ MoSAIC, KU Leuven


JoVE 4219

 Science Education: Essentials of Physical Examinations I

Respiratory Exam I: Inspection and Palpation

JoVE Science Education

Source: Suneel Dhand, MD, Attending Physician, Internal Medicine, Beth Israel Deaconess Medical Center

Disorders of the respiratory system with a chief complaint of shortness of breath are among the most common reasons for both outpatient and inpatient evaluation. The most obvious visible clue to a respiratory problem will be whether the patient is displaying any signs of respiratory distress, such as fast respiratory rate and/or cyanosis. In a clinical situation, this will always require emergent attention and oxygen therapy. Unlike pathology in other body systems, many pulmonary disorders, including chronic obstructive pulmonary disease (COPD), asthma, and pneumonia, can be diagnosed by careful clinical examination alone. This starts with a comprehensive inspection and palpation. Keep in mind that in non-emergency situations the patient's complete history will have been taken already, gaining important insight into exposure histories (e.g., smoking), which could give rise to specific lung diseases. This history can then confirm physical findings as the examination is performed.

 JoVE Biology

Culturing of Human Nasal Epithelial Cells at the Air Liquid Interface

1Center for Environmental Medicine, Asthma, and Lung Biology, The University of North Carolina at Chapel Hill, 2Department of Pediatrics, The University of North Carolina at Chapel Hill, 3Pulmonary Diseases and Critical Care, The University of North Carolina at Chapel Hill, 4Curriculum in Toxicology, The University of North Carolina at Chapel Hill


JoVE 50646

 JoVE Medicine

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device

1Wellness Promotion Science Center, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 2Advanced Research Center for Human Sciences, Waseda University, 3Department of Clinical Laboratory Science, Graduate School of Medical Science, Kanazawa University, 4Asanogawa General Hospital


JoVE 54837

 JoVE Medicine

Functional Human Liver Preservation and Recovery by Means of Subnormothermic Machine Perfusion

1Center for Engineering in Medicine, Dept. of Surgery, Massachusetts General Hospital, Harvard Medical School, 2Transplant Center, Dept. of Surgery, Massachusetts General Hospital, Harvard Medical School, 3Section of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, University Medical Center Groningen, University of Groningen


JoVE 52777

 Science Education: Essentials of Biochemistry

Chromatography-Based Biomolecule Purification Methods

JoVE Science Education

In biochemistry, chromatography-based purification methods are employed to isolate compounds from a complex mixture. Two such methods used commonly by biochemists are size-exclusion chromatography and affinity chromatography. In size-exclusion chromatography, a column packed with porous beads separates components of a mixture based on size. On the other hand, affinity chromatography allows for a more specific separation of biomolecules by using a column that is composed of stationary phase, which contains target-specific ligands. This video serves as an introduction to size-exclusion and affinity chromatography, as well as the concepts that govern them. A step-by-step procedure for the purification of a histidine-tagged protein by immobilized metal affinity chromatography is described. Applications for both of these chromatographic methods in biochemistry and biomedical research are also profiled. "Chromatography" refers to a wide range of methods used to isolate a component from a complex mixture, an essential step before a biomolecule's properties and activities can be determined. Each chromatographic technique has a different mechanism for separation, depending on the sample matrix and target compound. This video will focus on the principles and operation of two methods common to biochemistry: size-exclusi

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