Identification of γ-Aminobutyric Acid-Like Immunoreactive Neurons in the Rat Cuneate Nucleus

Vickie R. Roettger, John C. Pearson, Melvyn D. Goldfinger

Research output: Contribution to journalArticlepeer-review

Abstract

Neurons in the cuneate nucleus of the rat were examined for γ-aminobutyric acid-like immunoreactivity (GABA-LI) using antiserum raised against GABA-glutaraldehyde-keyhole limpet hemocyanin. GABA-LI neurons were analyzed for size, shape, and distribution and compared to Nissl-stained neurons. GABA-LI cell bodies were located at all rostral-caudal levels and were distributed randomly throughout the nucleus except at the level of the obex, where they were limited to the peripheral region of the cuneate nucleus. GABA-LI cell bodies had a significantly smaller mean cross-sectional area than the total cuneate neuronal population and comprised 21.5% of the total neuronal population as assessed with Nissl-staining. These results are consistent with the hypothesis that GABA is involved in processing somatosensory information in the rat dorsal column nuclei.

Original languageAmerican English
JournalNeuroscience Letters
Volume97
DOIs
StatePublished - Feb 13 1989

Keywords

  • Nucleus cuneatus
  • Immunohistochemistry
  • γ-Aminobutyric acid
  • Rat

Disciplines

  • Medical Cell Biology
  • Medical Neurobiology
  • Medical Physiology
  • Medical Sciences
  • Medicine and Health Sciences
  • Neurosciences
  • Physiological Processes

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