γ-Aminobutyric acid immunoreactive structures in the nucleus tractus solitarius: a light and electron microscopic study

doi:10.1016/0006-8993(92)90979-J

Brain Research

Volume 591, Issue 1, 18 September 1992, Pages 69-78

https://doi.org/10.1016/0006-8993(92)90979-J Get rights and content

Abstract

γ-Aminobutyric acid immunoreactive perikarya and boutons in the nucleus tractus solitarius of the cat were examined at both the light and electron microscopic level. Immunoreactive neurones were found predominantly in the parvocellular subdivision of the nucleus tractus solitarius and to a lesser degree in all the other subdivisions of the nucleus tractus solitarius and the dorsal vagal motonucleus. All the immunoreactive perikarya observed were similar in size and morphology. γ-Aminobutyric acid immunoreactive boutons were observed througout the nucleus tractus solitarius. However, in contrast to its high content of immunoreactive perikarya the parvocellular subdivision contained the lowest density of immunoreactive boutons. Ultrastructural examination of immunoreactive boutons in the different regions of the nucleus tractus solitarius revealed that they formed synaptic specializations, predominantly with dendritic shafts, all of which were of the symmetric type. This pattern of innervation was observed throughout the medial, commissural, ventrolateral and parvocellular subdivisions of the nucleus tractus solitarius.

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Research reportγ-Aminobutyric acid immunoreactive structures in the nucleus tractus solitarius: a light and electron microscopic study

Abstract

Brain Res.

Neurosci. Lett.

Brain Res.

Neuroscience

Neuroscience

J. Auton. Nerv. Syst.

J. Auton. Nerv. Syst.

Neuropharmacology

Eur. J. Pharmacol.

Brain Res.

Brain Res. Bull.

Neuroscience

Brain Res.

Brain Res.

Brain Res.

Brain Res.

Brain Res.

Neurosci. Lett.

Brain Res.

An autoradiographic examination of the central distribution of the trigeminal, facial, glossopharyngeal, and vagus nerves in the monkey

J. Comp. Neurol.

Inhibition of evoked and spontaneous activity of neurones in the nucleus tractus solitarius and dorsal motor vagal nucleus by cardiac and pulmonary vagal afferent fibres in the cat

J. Physiol.

A γ-aminobutyric-acid-mediated inhibition of neurones in the nucleus tractus solitarius of the cat

J. Physiol.

Research report
γ-Aminobutyric acid immunoreactive structures in the nucleus tractus solitarius: a light and electron microscopic study