Mu opioid receptors inhibit GABA release from parvalbumin interneuron terminals onto CA1 pyramidal cells

  • Caifeng Shao
  • , Pei Chen
  • , Qian Chen
  • , Mingwei Zhao
  • , Wei Ning Zhang
  • , Kun Yang

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Selectively activating (by optogenetics) parvalbumin-expressing (PV) interneurons induces GABA release onto CA1 pyramidal cells. Here we report that this release was attenuated by presynaptic mu opioid receptors (MORs) activation. On the other hand, conventional electric shock, presumably activating non-selectively presynaptic GABAergic terminals, also induced GABA release; however, this release showed relatively limited depression by MORs activation. The data suggest that MORs specifically inhibit GABA release from PV terminals and therefore, further support the idea that MORs contribute to homeostasis in CA1 neuro-circuit.

Original languageEnglish
Pages (from-to)1059-1062
Number of pages4
JournalBiochemical and Biophysical Research Communications
Volume522
Issue number4
DOIs
StatePublished - 19 Feb 2020
Externally publishedYes

Keywords

  • GABA
  • Hippocampus
  • Mu opioid receptors
  • Optogenetics
  • Parvalbumin
  • Whole-cell recordings

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