Peripheral Analgesic and Anti-inflammatory Effects of Diclofenac, SC-560 and NS-398 on Acute Arthritic Model in Rats / 대한마취과학회지
Korean Journal of Anesthesiology
; : 336-341, 2004.
Article
in Ko
| WPRIM
| ID: wpr-153742
Responsible library:
WPRO
ABSTRACT
BACKGROUND:
Non-steroidal anti-inflammatory drugs (NSAIDs) are generally attributed to suppression cyclooxygenase enzymes, leading to decreased products of the arachidonic acid cascade. Since the discovery of two isoenzymes of cyclooxygenase, inhibition of cyclooxygenase-2 has been suggested to be responsible for therapeutic effects of NSAIDs without side effects. In the present study, to investigate the extent to peripheral nociception and inflammation of cyclooxygenase-1 and cyclooxygenase-2, diclofenac (non-selective inhibitor), SC-560 (selective cyclooxygenase-1 inhibitor) and NS-398 (selective cyclooxygenase-2 inhibitor) are injected intra-articularly on acute arthritic model in rats.METHODS:
Arthritis was induced with 2% lamda-carrageenan (suspended in 50microliter normal saline) into the right knee joint cavity under enflurane anesthesia (2-4%). Before and after the injection, rats were allowed to walk freely through a pathway constructed to record weight load by means of 8 weight sensors (strain gauge type) attached to 8 plates which function independently. The weight load, diameter of both knee joints and weight of rat were measured at each test. At 4 hours and 30 minutes, diclofenac, SC-560 and NS-398 dissolved in 10% dimethyl sulfoxide were injected intra-articularly (50microgram/50microliter).RESULTS:
The weight loads increased in diclofenac group at 6 and 9 hours and in NS-398 group at 24 and 48 hours after induction of arthritis. The diameter ratio decreased in diclofenac group at 12 hours after induction of arthritis.CONCLUSIONS:
These results suggest that peripheral nociception and inflammation in acute model of arthritis in rats are likely related with both cyclooxygenase-1 and cyclooxygenase-2 pathways.Key words
Full text:
1
Index:
WPRIM
Main subject:
Arthritis
/
Anti-Inflammatory Agents, Non-Steroidal
/
Diclofenac
/
Dimethyl Sulfoxide
/
Arachidonic Acid
/
Prostaglandin-Endoperoxide Synthases
/
Enflurane
/
Cyclooxygenase 1
/
Cyclooxygenase 2
/
Nociception
Limits:
Animals
Language:
Ko
Journal:
Korean Journal of Anesthesiology
Year:
2004
Type:
Article