Search Results - "Gannon, R L"

Opioid induced non-photic phase shifts of hamster circadian activity rhythms by Byku, Mirnela, Gannon, Robert L

“…The phase of the circadian pacemaker in hamsters can be shifted by the application of certain non-photic stimuli late in the subjective day. A projection from…”
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Local administration of serotonin agonists blocks light-induced phase advances of the circadian activity rhythm in the hamster by Weber, E T, Gannon, R L, Rea, M A

“…Circadian rhythms in mammals are synchronized to environmental light-dark cycles through a direct retinal projection to the suprachiasmatic nucleus (SCN), a…”
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Serotonergic serotonin1A mixed agonists/antagonists elicit large-magnitude phase shifts in hamster circadian wheel-running rhythms by GANNON, R. L

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SNC 80, a delta-opioid agonist, elicits phase advances in hamster circadian activity rhythms by Byku, Mirnela, Gannon, Robert L

“…Non-photic stimuli administered to hamsters during the subjective day can cause phase advances in circadian wheel running activity. It is believed that…”
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Distribution of δ opioid receptor immunoreactivity in the hamster suprachiasmatic nucleus and intergeniculate leaflet by Byku, Mirnela, Legutko, Roseann, Gannon, Robert L.

“…The hamster suprachiasmatic nucleus (SCN) is innervated by a dense plexus of enkephalin-containing axons originating from cells in the intergeniculate leaflet…”
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Serotonergic potentiation of photic phase shifts of the circadian activity rhythm by Rea, M A, Barrera, J, Glass, J D, Gannon, R L

“…Recent evidence suggests that serotonin may function to regulate the sensitivity of the circadian clock to the resetting effect of environmental light. Here we…”
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Serotonin1A autoreceptor activation by S 15535 enhances circadian activity rhythms in hamsters: Evaluation of potential interactions with serotonin2A and serotonin2C receptors by Gannon, R.L., Millan, M.J.

“…Mammalian circadian activity rhythms are generated by pacemaker cells in the suprachiasmatic nucleus (SCN). As revealed by the actions of diverse agonists,…”
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Serotonergic serotonin (1A) mixed agonists/antagonists elicit large-magnitude phase shifts in hamster circadian wheel-running rhythms by Gannon, R L

“…The biological clock that generates circadian rhythms in mammals is located within the suprachiasmatic nuclei at the base of the hypothalamus. The circadian…”
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Nitric oxide synthase inhibitor blocks light-induced phase shifts of the circadian activity rhythm, but not c- fos expression in the suprachiasmatic nucleus of the Syrian hamster by Todd Weber, E., Gannon, Robert L., Michel, Anna Marie, Gillette, Martha U., Rea, Michael A.

“…Circadian rhythms in mammals are entrained to the environmental light cycle by daily adjustments in the phase of the circadian pacemaker located in the…”
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U-50,488H inhibits dynorphin and glutamate release from guinea pig hippocampal mossy fiber terminals by Gannon, R L, Terrian, D M

“…The selective kappa opioid agonist U-50,488H was tested for its ability to modulate the potassium-induced rise of cytosolic Ca2+ in, and transmitter release…”
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Presynaptic modulation of glutamate and dynorphin release by excitatory amino acids in the guinea-pig hippocampus by Gannon, R L, Terrian, D M

“…Excitatory amino acid agonists and antagonists were evaluated for their ability to affect the concomitant release of endogenous L-glutamate and dynorphin…”
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Glutamate receptor immunoreactivity in the rat suprachiasmatic nucleus by Gannon, R L, Rea, M A

“…Antibodies selective for the glutamate receptor subunits GluR1 and GluR2/3 were used to localize glutamate receptor immunoreactivity in the rat suprachiasmatic…”
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5HT7 Receptors in the Rodent Suprachiasmatic Nucleus by Gannon, Robert L.

“…Serotonergic modulation of circadian rhythms in rodent model preparations has received considerable attention over the past decade. Investigators have also…”
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Characterization of the presynaptic calcium channels involved in glutamate exocytosis from rat hippocampal mossy fiber synaptosomes by Terrian, D M, Dorman, R V, Gannon, R L

“…Calcium antagonists inhibit both the Ca2(+)-dependent and -independent release of endogenous glutamate from intact synaptosomes. In the present study, the…”
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GABAergic modulation of optic nerve-evoked field potentials in the rat suprachiasmatic nucleus by Gannon, Robert L., Cato, Matthew J., Kelley, Kathryn Hart, Armstrong, Deborah L., Rea, Michael A.

“…The suprachiasmatic nuclei (SCN) at the base of the hypothalamus are known to be the site of the endogenous circadian pacemaker in mammals. The SCN are…”
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cGMP-dependent protein kinase inhibitor blocks light-induced phase advances of circadian rhythms in vivo by Weber, E.Todd, Gannon, Robert L, Rea, Michael A

“…The suprachiasmatic nucleus (SCN) contains the primary mammalian circadian clock. Light synchronizes these circadian rhythms through a mechanism involving the…”
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L(+)-2-amino-4-phosphonobutyrate inhibits the release of both glutamate and dynorphin from guinea pig but not rat hippocampal mossy fiber synaptosomes by Gannon, R L, Baty, L T, Terrian, D M

“…The K+-evoked release of dynorphin A(1-8)-like immunoreactivity from guinea pig hippocampal mossy fiber synaptosomes was inhibited 53% by…”
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Effects of calcium antagonists on the evoked release of dynorphin A(1-8) and availability of intraterminal calcium in rat hippocampal mossy fiber synaptosomes by Terrian, D M, Damron, D S, Dorman, R V, Gannon, R L

“…The pharmacological properties of presynaptic calcium (Ca) channels on rat hippocampal mossy fiber synaptosomes were characterized by determining the…”
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Kappa opioid agonists inhibit transmitter release from guinea pig hippocampal mossy fiber synaptosomes by GANNON, R. L, TERRIAN, D. M

“…Opioid agonists specific for the mu, delta, and kappa opioid receptor subtypes were tested for their ability to modulate potassium-evoked release of…”
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Displacement of endogenous glutamate with D-aspartate : an effective strategy for reducing the calcium-independent component of glutamate release from synaptosomes by TERRIAN, D. M, DORMAN, R. V, DAMRON, D. S, GANNON, R. L

“…D-aspartate was used in the present study to partially deplete the cytosolic pool of glutamate, which is released independent of extracellular Ca2+, prior to…”
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