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Role of GABA in Central Respiratory Control Studied in Mice Lacking GABA-Synthesizing Enzyme 67-kDa Isoform of Glutamic Acid Decarboxylase

  • Shun-ichi Kuwana
  • Yasumasa Okada
  • Yoshiko Sugawara
  • Kunlhlko Obata
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 551)

Abstract

In in vivo adult mammals, the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) has been shown to play an essential role in the termination of the respiratory phase in the central respiratory rhythm generator.1, 2, 3 On the other hand, works with in vitro brainstem-spinal cord preparations have revealed that the respiratory rhythm of neonatal rats is unaffected by blockade of GABAergic and glycinergic receptors.46 These results suggest that either GABAergic or glycinergic synaptic inhibition is not essential for the generation of respiratory rhythm in neonatal mammals. We recently analyzed the role of GABA in the generation of respiratory rhythm and pattern and reported that GABA plays an important role in the maintenance of regular respiratory rhythm and normal inspiratory pattern in neonatal mice7. However, the precise role of GABA in the generation of respiratory rhythm and pattern in neonatal mammals is not well understood at the level of respiratory neurons.

Keywords

Glutamic Acid Decarboxylase Neonatal Mouse Respiratory Rhythm Inspiratory Phase Respiratory Neuron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic/Plenum Publishers, New York 2004

Authors and Affiliations

  • Shun-ichi Kuwana
    • 1
  • Yasumasa Okada
    • 2
  • Yoshiko Sugawara
    • 1
  • Kunlhlko Obata
    • 3
  1. 1.Department of PhysiologyTeikyo University School of MedicineTokyoJapan
  2. 2.Department of MedicineKeio University Tsukigase Rehabilitation CenterShizuokaJapan
  3. 3.Neural Circuit Mechanisms Research GroupRIKEN Brain Science InstituteWakoJapan

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