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NADPH Oxidase: A flavoprotein enzyme that catalyzes the univalent reduction of Oxygen using Nadph as an electron donor to create Superoxide anion. The enzyme is dependent on a variety of Cytochromes. Defects in the production of superoxide ions by enzymes such as Nadph oxidase result in Granulomatous disease, Chronic.
 JoVE Biology

En Face Detection of Nitric Oxide and Superoxide in Endothelial Layer of Intact Arteries

1Cardiovascular and Aging Research, Department of Medicine, Division of Physiology, Faculty of Science, University of Fribourg, 2Kidney Control of Homeostasis, Swiss National Centre of Competence in Research, 3System Physiology, Department of Medicine, Division of Physiology, Faculty of Science, University of Fribourg


JoVE 53718

 JoVE Biology

Bone Conditioned Medium: Preparation and Bioassay

1Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, 2Laboratory of Oral Cell Biology, School of Dental Medicine, University of Bern, 3Department of Oral and Maxillofacial Surgery, School of Dental Medicine, Universitat Internacional de Catalunya, 4Robert K. Schenk Laboratory of Oral Histology, School of Dental Medicine, University of Bern, 5Department of Cranio Maxillofacial Surgery, Inselspital, University of Bern, 6Department of Implant Dentistry, School of Dentistry, Universidade Federal de Santa Catarina


JoVE 52707

 Science Education: Essentials of Cell Biology

Detecting Reactive Oxygen Species

JoVE Science Education

Reactive oxygen species are chemically active, oxygen-derived molecules capable of oxidizing other molecules. Because of their reactive nature, there are many deleterious effects associated with unchecked ROS production, including structural damage to DNA and other biological molecules. However, ROS can also be mediators of physiological signaling. There is accumulating evidence that ROS play significant roles in everything from activation of transcription factors to the mediation of inflammatory toxicity that kills foreign pathogens and defend the body.In this video we will delve into the associations between ROS, metabolism and disease. After establishing their significance, we will discuss the principles and a protocol of a commonly used methodology for measuring ROS levels in cells: the use of non-fluorescent probes that become fluorescent upon oxidation. Lastly, we will review some current applications of this technique in cell biology research.

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 JoVE Genetics

Genetic Engineering of an Unconventional Yeast for Renewable Biofuel and Biochemical Production

1Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 2NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), Life Sciences Institute, National University of Singapore, 3Food Science and Chemical Engineering, Singapore Institute of Technology


JoVE 54371

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