Back to Search
Start Over
Oral gabapentin treatment accentuates nerve and peripheral inflammatory responses following experimental nerve constriction in Wistar rats.
- Source :
-
Neuroscience letters [Neurosci Lett] 2013 Nov 27; Vol. 556, pp. 93-8. Date of Electronic Publication: 2013 Oct 16. - Publication Year :
- 2013
-
Abstract
- Gabapentin (GBP) is an anti-convulsive drug often used as analgesic to control neuropathic pain. This study aimed at evaluating whether oral GBP treatment could improve nerve inflammation response after sciatic nerve constriction in association with selected pain and motor spontaneous behavior assessments in Wistar rats. We evaluated nerve myeloperoxidase (MPO) and inflammatory cytokines on the 5th day post-injury, time in which nerve inflammation is ongoing. In addition, the role of GBP on carrageenan-induced paw edema and peritoneal cell migration was analyzed. GBP was given by gavage at doses of 30, 60 and 120mg/kg, 60min prior to chronic constriction of the sciatic nerve (CCSN) and during 5 days post-injury, 12/12h. CCSN animals treated with saline were used as controls and for behavioral and inflammation assessments untreated sham-operated rats were also used. On the 5th day, GBP (60 and 120mg/kg) alleviated heat-induced hyperalgesia and significantly increased delta walking scores in CCSN animals, the latter suggesting excitatory effects rather than sedation. GBP (60mg/kg) significantly increased nerve MPO, TNF-α, and IL-1β levels, comparing with the saline group. GBP (120mg/kg) reduced the anti-inflammatory cytokine IL-10 nerve levels compared with the CCSN saline group. Furthermore, GBP (60 and 120mg/kg) increased carrageenan-induced paw edema and peritoneal macrophage migration compared with the CCSN saline group. Altogether our findings suggest that GBP accentuates nerve and peripheral inflammatory response, however confirmed its analgesic effect likely due to an independent CNS-mediated mechanism, and raise some concerns about potential GBP inflammatory side effects in widespread clinical use.<br /> (Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.)
- Subjects :
- Administration, Oral
Amines administration & dosage
Amines therapeutic use
Analgesics administration & dosage
Analgesics therapeutic use
Animals
Cell Movement
Constriction, Pathologic
Cyclohexanecarboxylic Acids administration & dosage
Cyclohexanecarboxylic Acids therapeutic use
Cytokines metabolism
Edema immunology
Gabapentin
Inflammation drug therapy
Inflammation immunology
Male
Motor Activity drug effects
Neuralgia immunology
Neuralgia physiopathology
Peritoneal Cavity cytology
Rats
Rats, Wistar
Sciatic Nerve immunology
Sciatic Nerve injuries
gamma-Aminobutyric Acid administration & dosage
gamma-Aminobutyric Acid therapeutic use
Amines pharmacology
Analgesics pharmacology
Cyclohexanecarboxylic Acids pharmacology
Edema drug therapy
Neuralgia drug therapy
Sciatic Nerve drug effects
gamma-Aminobutyric Acid pharmacology
Subjects
Details
- Language :
- English
- ISSN :
- 1872-7972
- Volume :
- 556
- Database :
- MEDLINE
- Journal :
- Neuroscience letters
- Publication Type :
- Academic Journal
- Accession number :
- 24140003
- Full Text :
- https://doi.org/10.1016/j.neulet.2013.10.010