Whole-Cell Patch Clamp Recording in a Substantia Gelatinosa Neuron of a Spinal Cord Slice

Abstract

Source: Zhu, M., et al. Preparation of Acute Spinal Cord Slices for Whole-cell Patch-clamp Recording in Substantia Gelatinosa Neurons. J. Vis. Exp. (2019)

This video demonstrates the procedure for performing electrophysiological recordings in substantia gelatinosa (SG) neurons of spinal cord slices, using whole-cell patch-clamp techniques to analyze neuron firing patterns. This method allows the study of neural responses to stimuli in SG neurons of the spinal cord.

Protocol

All procedures involving animal samples have been reviewed and approved by the appropriate animal ethical review.

1. Preparation of Solutions and Materials

1. Solutions​
   1. Prepare artificial cerebrospinal fluid (ACSF) (in mM): 117 sodium chloride (NaCl), 3.6 potassium chloride (KCl), 1.2 sodium dihydrogen phosphate dihydrate (NaH₂PO₄·2H₂O), 2.5 calcium chloride dihydrate (CaCl₂·2H₂O), 1.2 magnesium chloride hexahydrate (MgCl₂·6H₂O), 25 sodium bicarbonate (NaHCO₃), 11 D-glucose, 0.4....

Materials

List of materials used in this article

Name	Company	Catalog Number	Comments
NaCl	Sigma	S7653	Used for the preparation of ACSF and PBS
KCl	Sigma	60130	Used for the preparation of ACSF, sucrose-ACSF, and K+-based intracellular solution
NaH2PO4·2H2O	Sigma	71500	Used for the preparation of ACSF, sucrose-ACSF and PBS
CaCl2·2H2O	Sigma	C5080	Used for the preparation of ACSF and sucrose-ACSF
MgCl2·6H2O	Sigma	M2670	Used for the preparation of ACSF and sucrose-ACSF
NaHCO3	Sigma	S5761	Used for the preparation of ACSF and sucrose-ACSF
D-Glucose	Sigma	G7021	Used for the preparation of ACSF
Ascorbic acid	Sigma	P5280	Used for the preparation of ACSF and sucrose-ACSF
Sodium pyruvate	Sigma	A7631	Used for the preparation of ACSF and sucrose-ACSF
Sucrose	Sigma	S7903	Used for the preparation of sucrose-ACSF
K-gluconate	Wako	169-11835	Used for the preparation of K+-based intracellular solution
Na2-Phosphocreatine	Sigma	P1937	Used for the preparation of intracellular solution
EGTA	Sigma	E3889	Used for the preparation of intracellular solution
HEPES	Sigma	H4034	Used for the preparation of intracellular solution
Mg-ATP	Sigma	A9187	Used for the preparation of intracellular solution
Li-GTP	Sigma	G5884	Used for the preparation of intracellular solution
CsMeSO4	Sigma	C1426	Used for the preparation of Cs+-based intracellular solution
CsCl	Sigma	C3011	Used for the preparation of Cs+-based intracellular solution
TEA-Cl	Sigma	T2265	Used for the preparation of Cs+-based intracellular solution
Na2HPO4	Hengxing Chemical Reagents		Used for the preparation of PBS
Borosilicate glass capillaries	World Precision Instruments	TW150F-4	1.5 mm OD, 1.12 mm ID
Micropipette puller	Sutter Instrument	P-97	Used for the preparation of micropipettes
Infrared CCD camera	Dage-MIT	IR-1000
Patch-clamp amplifier	HEKA	EPC-10
Micromanipulator	Sutter Instrument	MP-285
X-Y stage	Burleigh	GIBRALTAR X-Y
Upright microscope	Olympus	BX51WI
Osmometer	Advanced	FISKE 210
PH meter	Mettler Toledo	FE20