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1Department of Surgery, Davis Heart and Lung Research Institute,The Ohio State University Wexner Medical Center, 2Department of Physiology and Cell Biology, Davis Heart and Lung Research Institute,The Ohio State University Wexner Medical Center, 3Department of Molecular Biophysics and Physiology,Rush University Medical Center, 4Department of Internal Medicine, Davis Heart and Lung Research Institute,The Ohio State University Wexner Medical Center
Chapters
- 00:05Title
- 01:29Setting Up Osmotic-stress Perfusion System and Solution Preparation
- 02:00Preparing Intact Single Flexor Digitorum Brevis (FDB) Muscle Fibers from Mouse
- 05:12Fluo-4 AM Dye Loading and Ca2+ Imaging (Sparks Measurement)
- 07:39Data Analysis
- 08:14Results: Ca2+ Sparks in Young, Aged, and Diseased Mice
- 10:28Conclusion
Descrito aqui é um método para medir diretamente faíscas de cálcio, as unidades elementares de Ca 2 + liberação de retículo sarcoplasmático em fibras musculares esqueléticas intactas. Este método utiliza osmótica mediada por estresse disparo de Ca 2 + liberação do receptor rianodina nas fibras musculares isoladas. A dinâmica ea capacidade homeostática de Ca 2 + intracelular de sinalização pode ser empregada para avaliar a função do músculo na saúde e na doença.
