title: Neurotransmitter release by certain neuropeptides in the chicken retina.
abstract: The ability of certain neuropeptides (glucagon, somatostatin, leu-enkephalin and neurotensin) to release known neurotransmitters (glycine, GABA, dopamine and 5-hydroxytryptamine) was tested in the chicken retina. Tritiated neurotransmitters were injected intravitreally in chicken eyes. After excision, the retina was stimulated in vitro with the neuropeptide in micromolar concentrations while monitoring the efflux of radioactivity from the retina. A rise of the efflux represents a stimulus dependent release. Neurotensin release [3H] glycine, [3H]dopamine and [3H]5-hydroxytryptamine. Leu-enkephalin released [3H]dopamine and somatostatin released [3H]5-hydroxytryptamine. Glucagon was without effect. [3H]GABA was not released by any of the neuropeptides.
authors.forename: B
authors.initials: B
authors.lastname: Bauer
authors.forename: B
authors.initials: B
authors.lastname: Ehinger
authors.forename: K
authors.initials: K
authors.lastname: Tornqvist
authors.forename: J
authors.initials: J
authors.lastname: Waga
mesh_terms: D000818:Animals; D002645:Chickens; D004298:Dopamine / Q000378:metabolism / Q000494:pharmacology; D004743:Enkephalin, Leucine / Q000494:pharmacology; D005260:Female; D005934:Glucagon / Q000494:pharmacology; D005998:Glycine / Q000378:metabolism; D008297:Male; D009419:Nerve Tissue Proteins / Q000494:pharmacology*; D009496:Neurotensin / Q000494:pharmacology; D018377:Neurotransmitter Agents / Q000008:administration & dosage / Q000378:metabolism*; D012160:Retina / Q000378:metabolism*; D012701:Serotonin / Q000378:metabolism / Q000494:pharmacology; D013004:Somatostatin / Q000494:pharmacology; D005680:gamma-Aminobutyric Acid / Q000378:metabolism
chemical_list: D009419:Nerve Tissue Proteins; D018377:Neurotransmitter Agents; D012701:Serotonin; D009496:Neurotensin; D013004:Somatostatin; D005680:gamma-Aminobutyric Acid; D004743:Enkephalin, Leucine; D005934:Glucagon; D005998:Glycine; D004298:Dopamine