Characterization and distribution of neuropeptide Y in the brain of a caecilian amphibian

Ted J. Ebersole, J. Michael Conlon, Frederick W. Goetz, Sunny K. Boyd

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Neuropeptide Y (NPY) from the brain of an amphibian from the order Gymnophiona (the caecilian, Typhlonectes natans) was characterized. We cloned a 790 base pair cDNA encoding the caecilian NPY precursor. The open reading frame consisted of 291 bases, indicating an NPY precursor of 97 amino acids. Both deduced and isolated NPY primary structures were Tyr-Pro-Ser-Lys-Pro-Asp-Asn-Pro-Gly-Glu10-Asp-Ala-Pro-Ala- Glu-Asp-Met-Ala-Lys-Tyr20-Tyr-Ser-Ala-Leu-Arg-His-Tyr-Ile- Asn-Leu30-Ile-Thr-Arg-Gln-Arg-Tyr · NH2. In caecilian brain, we observed NPY immunoreactive cells within the medial pallium, basal forebrain, preoptic area, midbrain tegmentum and trigeminal nucleus. The prevalence of preoptic and hypothalamic terminal field staining supports the hypothesis that NPY controls pituitary function in this caecilian.

Original languageEnglish
Pages (from-to)325-334
Number of pages10
JournalPeptides
Volume22
Issue number3
DOIs
Publication statusPublished (in print/issue) - 2001

Keywords

  • Gymnophiona
  • NPY gene
  • Pituitary
  • Reproduction
  • Typhlonectes natans

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