Voltage-clamp recordings of postsynaptic currents in substantia gelatinosa neurons in vitro and its applications to assess synaptic transmission.
We describe here procedures for recording postsynaptic currents in substantia gelatinosa neurons on a transverse spinal cord slice preparation with an attached dorsal root. At the holding potential of -70 mV, glutamatergic spontaneous excitatory postsynaptic currents (EPSCs) and dorsal root (A delta and/or C fiber) stimulation-evoked EPSCs could be observed. Whereas at the holding potential of 0 mV, spontaneous inhibitory postsynaptic currents (IPSCs) and dorsal root A delta fiber stimulation-evoked IPSCs could be encountered. The methods make it possible to evaluate synaptic transmission by analysing the postsynaptic currents on dorsal root attached spinal cord slice.
Yang
K
K
Department of Anatomy and K. K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an 710032, PR China. deptanat@fmmu.edu.cn
Li
Y
Y
Kumamoto
E
E
Furue
H
H
Yoshimura
M
M
D000818:Animals; D004594:Electrophysiology; D005071:Evoked Potentials / Q000502:physiology; D019706:Excitatory Postsynaptic Potentials / Q000502:physiology*; D066298:In Vitro Techniques; D009474:Neurons / Q000502:physiology*; D018408:Patch-Clamp Techniques / Q000379:methods*; D051381:Rats; D017207:Rats, Sprague-Dawley; D013116:Spinal Cord / Q000166:cytology; D013376:Substantia Gelatinosa / Q000166:cytology / Q000502:physiology*; D009435:Synaptic Transmission / Q000502:physiology*