Vasoactive intestinal peptide immunoreactive neurons in the rat suprachiasmatic nucleus demonstrate diurnal variation.

@article{Takahashi1989VasoactiveIP,
  title={Vasoactive intestinal peptide immunoreactive neurons in the rat suprachiasmatic nucleus demonstrate diurnal variation.},
  author={Yumi Takahashi and Haruki Okamura and Noboru Yanaihara and Shun Hamada and Satoshi Fujita and Yasuhiko Ibata},
  journal={Brain research},
  year={1989},
  volume={497 2},
  pages={374-7}
}
The suprachiasmatic nucleus (SCN) of mammals is considered to be a circadian oscillator and it also demonstrates circadian rhythmicity of its multiple unit activity. A number of neuropeptides have been found in the SCN. Vasoactive intestinal peptide (VIP)- and vasopressin-containing neurons comprise large populations of these cells and have a distinct distribution within the nucleus. Therefore we attempted to examine whether the VIP neurons show a diurnal alteration of their immunoreactivity by… CONTINUE READING