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Extracellular concentration of nitrite (NO2-), an oxidized product of nitric oxide (NO), was measured consecutively in the dorsal region of the rat suprachiasmatic nucleus (SCN) by means of in vivo microdialysis. The NO2- concentrations in the dialysates showed robust circadian rhythm under a 12:12 h light/dark cycle and were higher during the dark phase(More)
Production of nitric oxide (NO) in the hypothalamic paraventricular nucleus (PVN) was examined by microdialysis in rats subjected to immobilization (IMO) stress. A dialysis probe was implanted in the posterior magnocellular subdivision of the PVN and nitrite (NO(2)(-)), an oxidized product of NO, was measured continuously. NO(2)(-) concentration in(More)
Oro-facial sensorimotor function conducted by the brainstem is vital to newborn mammals, and N-methyl-D-aspartate (NMDA) receptors play an important role in the regulation. Here we examined the expression of NMDA receptor subunits in the mouse hypoglossal nucleus from embryonic day 13 (E13) through postnatal day 21 (P21). Compared with other brainstem(More)
The high-affinity choline transporter CHT1 works for choline uptake in the presynaptic terminals of cholinergic neurons. We examined its expression in the hypoglossal nucleus after unilateral hypoglossal nerve transection in mice by fluorescent in situ hybridization. One week after axotomy, CHT1 mRNA expression was lost in all hypoglossal motoneurons in the(More)
We examined the expression profile of catechol O-methyltransferase (COMT) mRNA and its protein in the neonatal rat hypothalamus by in situ hybridization and immunohistochemistry to clarify the sites of dopamine degradation. Strong COMT mRNA expression was observed in the suprachiasmatic nucleus (SCN) throughout its rostrocaudal extent at postnatal day 1(More)
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