PMID: 7536097Jan 1, 1995Paper

Reduction of carrageenin oedema and the associated c-Fos expression in the rat lumbar spinal cord by nitric oxide synthase inhibitor

British Journal of Pharmacology
P HonoréJ M Besson

Abstract

1. Three hours after intraplantar carrageenin (6 mg/150 microliters of saline) Fos-like immunoreactivity (Fos-LI) was mainly observed in L4 and L5 segments of the dorsal horn. Both superficial (I-II) and deep laminae (V-VI) neurones were labelled. 2. We have studied the effect of systemic administration of a nitric oxide synthase inhibitor, NG-nitro-L-arginine methyl ester (L-NAME) on carrageenin evoked c-Fos expression and thus the contribution of nitric oxide to this expression. 3. Pre-administration of L-NAME (10, 25, 50, 100 mg kg-1, i.v.) dose-dependently reduced the number of superificial and deep laminae Fos-LI neurones, 100 mg kg-1 produced a 63 +/- 2% and 72 +/- 4% reduction of Fos-LI neurones respectively, P < 0.0001 for both superficial and deep neurones. 4. Pre-administered L-NAME dose-relatedly reduced the carrageenin-evoked paw and ankle oedema, with 100 mg kg-1 of L-NAME resulting in a 74 +/- 2% and 103 +/- 2% reduction respectively. 5. Post-administration of L-NAME (10 mg kg-1, i.v.) reduced the number of superficial and deep laminae Fos-LI neurones (65 +/- 7% and 53 +/- 8% reduction respectively, P < 0.01 for both superficial and deep neurones). 6. Post-administered L-NAME reduced both the paw and ankle oedema ...Continue Reading

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Citations

Apr 8, 1998·Journal of Neuroscience Methods·L ZhangR G Williams
Mar 18, 2000·Neuroscience Research·N Yonehara, M Yoshimura
Apr 23, 2004·Pain Medicine : the Official Journal of the American Academy of Pain Medicine·P Honore, P W Mantyh
Jun 25, 2005·The Journal of Comparative Neurology·Sarah E SlackSophie Pezet

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