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 language | English |
|---|---|
| Pages (from-to) | 325-334 |
| Number of pages | 10 |
| Journal | Peptides |
| Volume | 22 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published (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).
| Funders | Funder number |
|---|---|
| National Science Foundation | IBN#98-06997, 95-14305 |
Keywords
- Gymnophiona
- NPY gene
- Pituitary
- Reproduction
- Typhlonectes natans