ANALGESIC AND ANTIINFLAMMATORY EFFECTS OF DIPYRONE IN RAT ADJUVANT ARTHRITIS MODEL

被引：48

作者：

TATSUO, MAKF ^{[1
]}

CARVALHO, WM ^{[1
]}

SILVA, CV ^{[1
]}

MIRANDA, AEG ^{[1
]}

FERREIRA, SH ^{[1
]}

FRANCISCHI, JN ^{[1
]}

机构：

[1] UNIV SAO PAULO,FAC MED RIBEIRAO PRETO,DEPT FARMACOL,RIBEIRAO PRET,SP,BRAZIL

来源：

INFLAMMATION | 1994年 / 18卷 / 04期

关键词：

D O I：

10.1007/BF01534437

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Dipyrone, a pirazolone derivative, is a known analgesic drug with minor toxic effects associated with its administration. The aim of the present study was to determine the analgesic and antiinflammatory effects of dipyrone in a model of chronic inflammation (adjuvant-induced arthritis in rats). Hind-paw hyperalgesia was detected in arthritic rats from the 10th to the 16th day of observation. Edema development was maximum (twofold increase) at the 14th day of observation compared to control animals and reduced at the 16th day of observation. Dipyrone (1-50 mg/kg) dose-dependently reduced both hind-paw hyperalgesia and edema from arthritic rats. However, it was shown to be more potent as analgesic than antiinflammatory in the present model. In contrast, indomethacin (2 mg/kg) and dexamethasone (0.4 mg/kg) completely inhibited hind-paw hyperalgesia and edema development. Our results indicate that dipyrone reduced the hyperalgesia and edema in arthritic rats by a mechanism not involving release of prostaglandin-like substances. The possibility of dipyrone inducing analgesia in arthritic rats through a peripheral action supports the use of dipyrone as an alternative choice drug for the treatment of pain associated with arthritislike diseases in selected cases.

引用

页码：399 / 405

页数：7

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