Optical stimulation in mice lacking the TRPV1 channel

Eul Suh; Agnella Izzo Matic; Margarete Otting; Joseph T. Walsh Jr.; Claus-Peter Richter

doi:10.1117/12.816891

23 February 2009 Optical stimulation in mice lacking the TRPV1 channel

Eul Suh, Agnella Izzo Matic, Margarete Otting, Joseph T. Walsh Jr., Claus-Peter Richter

Proceedings Volume 7180, Photons and Neurons; 71800S (2009) https://doi.org/10.1117/12.816891
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

Lasers can be used to stimulate neural tissue, including the sciatic nerve or auditory neurons. Wells and coworkers suggested that neural tissue is likely stimulated by heat.[1,2] Ion channels that can be activated by heat are the TRPV channels, a subfamily of the Transient Receptor Potential (TRP) ion channels. TRPV channels are nonselective cation channels found in sensory neurons involved in nociception. In addition to various chemicals, TRPV channels can also be thermally stimulated. The activation temperature for the different TRPV channels varies and is 43°C for TRPV1 and 39°C for TRPV3. By performing an immunohistochemical staining procedure on frozen 20 μm cochlear slices using a primary TRPV1 antibody, we observed specific immunostaining of the spiral ganglion cells. Here we show that in mice that lack the gene for the TRPV1 channel optical radiation cannot evoke action potentials on the auditory nerve.

Citation Download Citation

Eul Suh, Agnella Izzo Matic, Margarete Otting, Joseph T. Walsh Jr., and Claus-Peter Richter "Optical stimulation in mice lacking the TRPV1 channel", Proc. SPIE 7180, Photons and Neurons, 71800S (23 February 2009); https://doi.org/10.1117/12.816891

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