Brain-derived peptides inhibit synaptic transmission via presynaptic CABA(B) receptors in CA1 area of rat hippocampal slices

Huangui Xiong, Andrius Baskys, J. Martin Wojtowicz

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

GABA(B) receptors form the basis of a powerful and versatile inhibitory system in the mammalian brain. Presynaptic and postsynaptic actions of GABA, receptors have been described in various brain regions, including the hippocampus. We report here on a novel pharmacological agent, presumably a peptide, which inhibits synaptic transmission in the CA1 area of the rat hippocampus via GABA, receptors. The agent is a component of a nootropic drug, Cerebrolysin®, obtained from pig's brain extract. In contrast to other, presently known agonists, such as baclofen or GABA, Cerebrolysin® acts preferentially on presynaptic GABA, receptors and has no detectable postsynaptic inhibitory effects. Additional, postsynaptic depolarizing action of the drug resulting in increased excitability is pharmacologically distinct from the GABA, response and partially masked by the inhibition. The presynaptic GABA, agonist may add to clinical effects of Cerebrolysin® in treatment of brain injuries. Moreover, it promises to be a useful experimental agent in further studies of many possible functional roles of GABA, receptors.

Original languageEnglish (US)
Pages (from-to)188-194
Number of pages7
JournalBrain Research
Volume737
Issue number1-2
DOIs
StatePublished - Oct 21 1996

Fingerprint

GABA Receptors
Synaptic Transmission
Peptides
Brain
gamma-Aminobutyric Acid
Hippocampus
Nootropic Agents
GABA-B Receptors
GABA Agonists
Presynaptic Receptors
Baclofen
Brain Injuries
Swine
Pharmacology
Pharmaceutical Preparations
cerebrolysin

Keywords

  • Brain slice
  • CA1
  • Cerebrolysin
  • GABA(B)
  • Hippocampus
  • Prespnaptic
  • Receptor
  • Synaptic transmission

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology

Cite this

Brain-derived peptides inhibit synaptic transmission via presynaptic CABA(B) receptors in CA1 area of rat hippocampal slices. / Xiong, Huangui; Baskys, Andrius; Wojtowicz, J. Martin.

In: Brain Research, Vol. 737, No. 1-2, 21.10.1996, p. 188-194.

Research output: Contribution to journalArticle

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