Neurosci Lett 2001,
PMID: 11704298
Fukuhara, C; Brewer, J M; Dirden, J C; Bittman, E L; Tosini, G; Harrington, M E
The mammalian suprachiasmatic nucleus (SCN) contains the main circadian clock. Neuropeptide Y (NPY) that is released from the intergeniculate leaflet of the lateral geniculate body to the SCN, acts in the SCN to advance circadian phase in the subjective day via the NPY Y2 receptor. We used semi-quantitative in situ hybridization to determine the effect of NPY on circadian clock genes, Period 1 (Per1) and Period 2 (Per2), expression in SCN slices. Addition of NPY to the brain slices in the subjective day resulted in reduction of Per1 and Per2 mRNA levels 0.5 and 2 h after treatment. NPY Y1/Y5 and Y2 agonists decreased Per1 within 0.5 h. These results suggest that NPY may induce phase shifts by mechanisms involving or resulting in reduction of Per1 and Per2 mRNA levels.
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Text Mining Data
Period 1 (Per1) — NPY: "
We used semi-quantitative in situ hybridization to determine the
effect of
NPY on circadian clock genes,
Period 1 (Per1) and Period 2 (Per2), expression in SCN slices
"
Period 2 (Per2) — NPY: "
We used semi-quantitative in situ hybridization to determine the effect of NPY on circadian clock genes, Period 1 (Per1) and Period 2 (Per2) , expression in SCN slices
"
Per1 ⊣ NPY: "
These results suggest that NPY may induce phase shifts by mechanisms involving or resulting in reduction of Per1 and Per2 mRNA levels
"
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