Abstract
In adult cats, immunofluorescence images of glutamic acid decarboxylase (GAD) and N-methyl- d-aspartate (NMDA) receptors were achieved in the ventral respiratory group (VRG) neurons, which had been individually identified by in vivo intracellular recording and labeling with neurobiotin. Among augmenting inspiratory (aug-I), postinspiratory (post-I), and augmenting expiratory (aug-E) neurons labeled, GAD-immunoreactivity was demonstrated only in those neurons that were not antidromically activated (NAA) by stimulation of the vagus nerve and the C2-C3 spinal cord. Substantial immunoreactivity for NMDA receptors was presented in virtually all types of neurons, but lesser reactivity in aug-E bulbospinal neurons. These results suggest that the aug-I, post-I, and aug-E types of NAA neurons are γ-aminobutyric acid (GABA)ergic and that NMDA receptors distribute in lesser degree in aug-E bulbospinal neurons than in other types of VRG neurons.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call