Electrophysiologic study of murine spiral ganglion neurons.
- Author:
Jiangang FAN
1
;
Yuedi TANG
;
Chuanyu LIANG
Author Information
1. Department of Otorhinolaryngology, People's Hospital of Sichuan Province, Chengdu, 610072, China. mrfjg@21cn.com
- Publication Type:Journal Article
- MeSH:
Animals;
Cells, Cultured;
Ion Channels;
physiology;
Membrane Potentials;
physiology;
Mice;
Mice, Inbred Strains;
Neurons;
physiology;
Patch-Clamp Techniques;
Spiral Ganglion;
physiology
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2009;23(22):1038-1043
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To explore the nature of voltage dependent ion channels and basic electrophysiological characteristics of cochlear spiral ganglion neurons of apical and basal turn by patch clamp techniques of whole cell configure on murine spiral ganglion neurons.
METHOD:Different voltage dependent ionic currents were recorded with patch clamp techniques of whole cell configure on the condition of different internal electrode solution, blockers and stimulus protocol.
RESULT:Inward sodium channel current (I(Na)), hyperpolarization-activated inward cationic current (Ih), outward delay rectification potassium current (I(K)) and outward transient potassium current (I(A)) were recorded ,significant difference of electrophysiological characteristics of I(A) and I(K) was found between apical and basal turns (P < 0.05).
CONCLUSION:Various ionic currents are recorded, which shows that spiral ganglion neurons have the base of ionic channels to complete formation,conduction and modulation of action potential for auditory information transduction, the difference of electrophysiological characteristics between apical and basal turns contributes to the course of hearing formation.
