Patch Clamp and Perfusion Techniques for Studying Ion Channels Expressed in <em>Xenopus</em> oocytes
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چکیده
منابع مشابه
Patch-Clamp and Perfusion Techniques to Study Ion Channels Expressed in Xenopus Oocytes.
The Xenopus oocyte expression system is ideal for electrophysiological characterization of voltage-dependent and ligand-dependent ion channels because of its relatively low background of endogenous channels and the large size of the cell. Here, we present a protocol to study voltage- and ligand-dependent activation of ion channels expressed in Xenopus oocytes using patch-clamp techniques design...
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Since its development by Sakmann and Neher (1, 2), the patch clamp has become established as an extremely useful technique for electrophysiological measurement of single or multiple ion channels in cells. This technique can be applied to ion channels in both their native environment and expressed in heterologous cells, such as oocytes harvested from the African clawed frog, Xenopus laevis. Here...
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Direct electrical access to presynaptic ion channels has hitherto been limited to large specialized terminals such as the calyx of Held or hippocampal mossy fiber bouton. The electrophysiology and ion-channel complement of far more abundant small synaptic terminals (≤ 1 μm) remain poorly understood. Here we report a method based on superresolution scanning ion conductance imaging of small synap...
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To test the hypothesis that Ca channel plays a role in renal epithelial Ca transport, we exposed and patched apical membranes of freshly microdissected rabbit connecting tubules (CNTs). Single channel Ca currents were recorded with Ba as the charge carrier. In the cell-attached mode, 8-Br-cAMP increased the open-state probability (P.) to 0.6%. In excised, inside-out patches, P. was low spontane...
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ژورنال
عنوان ژورنال: Journal of Visualized Experiments
سال: 2011
ISSN: 1940-087X
DOI: 10.3791/2269