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

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

Funding

We thank Drs. H. Vaudry and M. Tonon, University of Rouen, France for gifts of NPY antiserum (for immunocytochemistry) and synthetic frog NPY. Antiserum 8999 (for radioimmunoassay) was a generous gift from Dr. M. M. T. O’Hare, Queen’s University of Belfast, N. Ireland. We thank P.F. Nielsen, Novo Nordisk, Bagrvaerd, Denmark for mass spectrometry measurements and Cold Spring Harbor Laboratory for materials used to make a caecilian brain cDNA library. This work was supported by the National Science Foundation (IBN#98-06997 and IBN#95-14305).

FundersFunder number
National Science FoundationIBN#98-06997, 95-14305

    Keywords

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

    Fingerprint

    Dive into the research topics of 'Characterization and distribution of neuropeptide Y in the brain of a caecilian amphibian'. Together they form a unique fingerprint.

    Cite this