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晶体诱导的大鼠皮下气囊炎症。

Crystal-induced inflammation in the rat subcutaneous air-pouch.

作者信息

Brooks P M, Burton D, Forrest M J

出版信息

Br J Pharmacol. 1987 Feb;90(2):413-9. doi: 10.1111/j.1476-5381.1987.tb08971.x.

Abstract

Monosodium urate (MSU) and calcium pyrophosphate dihydrate (CPPD) crystals initiated acute inflammatory reactions characterized by increased plasma extravasation and polymorphonuclear leukocyte (PMNL) accumulation in the rat subcutaneous air-pouch. Pretreatment of rats with colchicine (1 mg kg-1, s.c.) inhibited PMNL accumulation induced by either crystal type but had a greater inhibitory effect on MSU-induced plasma extravasation compared with that induced by CPPD crystals. Colchicine (1 mg kg-1, s.c.) did not reduce histamine-induced plasma extravasation in the air-pouch. The lipoxygenase product of arachidonic acid metabolism, leukotriene B4 (LTB4), was detected in MSU-induced exudates but not in CPPD-induced exudates. Pretreatment of rats with colchicine (1 mg kg-1, s.c.) inhibited LTB4 production in MSU-induced exudates.

摘要

尿酸单钠(MSU)和二水焦磷酸钙(CPPD)晶体引发急性炎症反应,其特征为大鼠皮下气囊中血浆外渗增加和多形核白细胞(PMNL)积聚。用秋水仙碱(1 mg/kg,皮下注射)预处理大鼠可抑制两种晶体类型诱导的PMNL积聚,但与CPPD晶体诱导的血浆外渗相比,对MSU诱导的血浆外渗具有更大的抑制作用。秋水仙碱(1 mg/kg,皮下注射)并未降低气囊中组胺诱导的血浆外渗。在MSU诱导的渗出物中检测到花生四烯酸代谢的脂氧合酶产物白三烯B4(LTB4),但在CPPD诱导的渗出物中未检测到。用秋水仙碱(1 mg/kg,皮下注射)预处理大鼠可抑制MSU诱导的渗出物中LTB4的产生。

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