Title : Ultraviolet irradiation of the eye and Fos-positive neurons induced in trigeminal brainstem after intravitreal or ocular surface transient receptor potential vanilloid 1 activation.

Pub. Date : 2010 Oct 13

PMID : 20643195






5 Functional Relationships(s)
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1 The aim of this study was to use c-fos like immunohistochemistry (Fos-LI) to map the trigeminal brainstem complex after intravitreal microinjection or ocular surface application of capsaicin, a selective transient receptor potential vanilloid 1 (TRPV1) agonist in male rats under barbiturate anesthesia. Capsaicin Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
2 The aim of this study was to use c-fos like immunohistochemistry (Fos-LI) to map the trigeminal brainstem complex after intravitreal microinjection or ocular surface application of capsaicin, a selective transient receptor potential vanilloid 1 (TRPV1) agonist in male rats under barbiturate anesthesia. Capsaicin Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
3 In non-inflamed controls, intravitreal capsaicin produced peaks of Fos-LI at the trigeminal subnucleus interpolaris/caudalis (Vi/Vcvl) transition and in superficial laminae at the caudalis/upper cervical cord (Vc/C1) junction regions. Capsaicin Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
4 At the Vc/C1 junction intravitreal capsaicin induced Fos-LI in a dose-dependent manner, while at the Vi/Vcvl transition responses were similar after vehicle or capsaicin injections. Capsaicin Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
5 Two days, but not 7 days, after UV irradiation intravitreal and ocular surface capsaicin-evoked Fos-LI at the Vc/C1 junction and nucleus tractus solitarius (NTS) were markedly enhanced, whereas the responses at the Vi/Vcvl transition were not different from non-inflamed controls. Capsaicin Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus