Abstract:
:The study was conducted to investigate the effect of serotonin depletion on nitric oxide-induced meningeal vascular response and cerebrovascular nociception. Nitroglycerin was infused i.v. to control and serotonin-depleted rats. Pial circulation was monitored by intravital fluorescent videomicroscopy and Fos immunoreactivity trigeminal nucleus caudalis neurons was used as an indicator for the cerebrovascular nociception. The results showed that the degree of nitric oxide-induced pial microvascular dilatation was significantly greater in the serotonin-depleted group than the control. The number of nitric oxide-evoked Fos-immunoreactive cells between the two groups remained comparable. The results suggest that though depletion of serotonin can facilitate the vascular response to nitric oxide it does not alter the nitric oxide-induced craniovascular nociceptive response.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Srikiatkhachorn A,Anuntasethakul T,Phansuwan-Pujito P,Patumraj S,Kasantikul Vdoi
10.1097/00001756-200104170-00021subject
Has Abstractpub_date
2001-04-17 00:00:00pages
967-71issue
5eissn
0959-4965issn
1473-558Xjournal_volume
12pub_type
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