Title : Lipoxygenase inhibitors suppressed carrageenan-induced Fos-expression and inflammatory pain responses in the rat.

Pub. Date : 2009 Apr 30

PMID : 19390822






6 Functional Relationships(s)
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1 Lipoxygenase inhibitors suppressed carrageenan-induced Fos-expression and inflammatory pain responses in the rat. Carrageenan Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
2 Intradermally injected carrageenan caused elevated number of cells exhibiting Fos-like immunoreactivity (Fos-LI) in the spinal dorsal horn, and decreased the thermal and mechanical threshold in Hargreaves and von Frey tests. Carrageenan Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
3 Intradermally injected carrageenan caused elevated number of cells exhibiting Fos-like immunoreactivity (Fos-LI) in the spinal dorsal horn, and decreased the thermal and mechanical threshold in Hargreaves and von Frey tests. Carrageenan Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
4 Pretreatment with an inhibitor of phospholipase A2, that generates the LO substrate, prior to the carrageenan injection significantly reduced the number of Fos-(+) cells. Carrageenan Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
5 Moreover, the LO inhibitors suppressed carrageenan-induced thermal and mechanical hyperalgesic behaviors, which inidcates that the changes in Fos expression correlates with those in the nociceptive behaviors in the inflamed rats. Carrageenan Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus
6 Overall, our results from the Fos-LI and behavior tests suggest that LO products released from inflamed tissues contribute to nociception during carrageenan-induced inflammation, indicating that the LO pathway is a possible target for modulating inflammatory pain. Carrageenan Fos proto-oncogene, AP-1 transcription factor subunit Rattus norvegicus