Oxygen dependency of synaptic transmission at the squid Loligo pealei giant synapse.

Journal Article (Journal Article)

1. Synaptic transmission at the squid giant synapse was blocked in 45 min by exposure to 0.02 atm oxygen but was maintained for more than 90 min in air (0.21 atm oxygen) or pure oxygen (1 atm). 2. Excitatory post-synaptic potential amplitude decreased in 0.02 atm oxygen but did not change in either 1 or 0.21 atm oxygen. Fast facilitation was increased in 0.02 atm oxygen only. 3. Post-synaptic resting membrane potential (Vm) and input resistance (Ro) remained unchanged in 1 or 0.21 atm oxygen but Ro was increased in 0.02 atm oxygen. 4. Our results suggest that severe hypoxia decreased the release of transmitter from the pre-synaptic terminal.

Full Text

Duke Authors

Cited Authors

  • Colton, CA; Colton, JS; Gilbert, DL

Published Date

  • June 1992

Published In

  • Comp Biochem Physiol Comp Physiol

Volume / Issue

  • 102 / 2

Start / End Page

  • 279 - 283

PubMed ID

  • 1354577

Digital Object Identifier (DOI)

  • 10.1016/0300-9629(92)90135-d


  • eng

Conference Location

  • England