Circadian variation of [14C]2-deoxyglucose uptake within the suprachiasmatic nucleus of the house sparrow, Passer domesticus

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Abstract

To determine whether the suprachiasmatic nuclei (SCN) of the house sparrow exhibit circadian variations in activity, metabolism within these and several other diencephalic structures was studied using the 2-deoxyglucose (2-DG) method at several times of day. Uptake of 2-DG was high at midday and mid-subjective day, but low at midnight within the SCN. Uptake was high at midday and low at midnight and mid-subjective day within the ventral lateral geniculate nucleus and lateral anterior nucleus, while no daily or circadian variation was observed within the periventricular preoptic nucleus. These data indicate that the avian SCN, as in mammals, express circadian rhythmicity.

Original languageEnglish
Pages (from-to)178-182
Number of pages5
JournalBrain Research
Volume459
Issue number1
DOIs
StatePublished - Aug 30 1988

Keywords

  • Avian
  • Circadian
  • Lateral anterior nucleus
  • Periventricular preoptic nucleus
  • Suprachiasmatic nucleus
  • Ventral lateral geniculate nucleus

ASJC Scopus subject areas

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

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