Ultrastructural localization of glutamate receptor subunits (NMDAR1, AMPA GluR1 and GluR2/3) and spinothalamic tract cells

Neuroreport
Z Ye, K N Westlund

Abstract

The associations of glutamate receptor subunits (NMDAR1, AMPA GluR1 and GluR2/3) and spinothalamic tract neurons in the rat lumbar spinal cord dorsal horn were investigated. Staining for NMDAR1 and AMPA GluR1 and GluR2/3 receptor subunits was observed throughout the spinothalamic tract soma and dendrites, particularly in association with the rough endoplasmic reticulum and some postsynaptic membrane sites. Immunostaining for NMDAR1 and AMPA GluR2/3 was also noted in presynaptic membrane sites. Localization of both NMDA and AMPA glutamate receptor subunits in association with spinothalamic tract neurons provides anatomical evidence in support of the various interactions reported for glutamate receptors in nociception. Presynaptic localization of the AMPA GluR2/3 receptor subunit suggests that spinothalamic tract cells may also be affected presynaptically by AMPA glutamate receptor interactions.

Citations

Oct 31, 2009·Molecular Neurobiology·Max Larsson
Feb 13, 1999·Progress in Neurobiology·M J Millan
Nov 20, 2001·Current Opinion in Pharmacology·K J Carpenter, A H Dickenson
Nov 26, 2005·Uirusu·Wataru Sugiura
Jun 19, 2010·Progress in Neurobiology·Jun Chen, William R Lariviere

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