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首页> 外文期刊>Biochemistry >Influence of acyl and plasmalogenic analogs of platelet activating factor on chemotaxis of human leukocytes in vitro and their inflammatory and antiinflammatory activity in vivo
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Influence of acyl and plasmalogenic analogs of platelet activating factor on chemotaxis of human leukocytes in vitro and their inflammatory and antiinflammatory activity in vivo

机译:血小板活化因子的酰基和血浆生成类似物对人白细胞趋化性及其体内炎症和抗炎活性的影响

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摘要

The effects of platelet activating factor (PAF) and its cell analogs 1-O-alk-1'-enyl-2-acetyl-sn-glycero-3-phospphocholine (1-alkenyl-PAF) and 1-acyl-2-acetyl-sn-glycero-3-phosphocholine (1-acyl-PAF) on chemotaxis of human leukocytes invitro and their inflammatory and antiinflammatory activities in vivo were studied.Both analogs stimulated chemotaxis of human leukocytesin agarose gel.PAF and 1-alkenyl-PAF (10-100 mug per paw) was more pronounced than that induced by PAF or 1-alkenyl-PAF.The latter also exhibited significant antiinflammatory effect by inhibiting PAF-or carrageenan-induced rat paw edema,and this effect exceeded that of dexamethasone.In these models of inflammation 1-acyl-PAF did not exhibit any antiinflammatory activity.THe data suggest that PAF is not the only cell phospholipid mediating inflammation-its cell analogs,1-acyl-PAF and 1-alkenyl-PAF,may also be involved into the inflammatory response.Possible interrelationships between cellular synthesis of 1-acyl-PAF,its formation inoxidized LDL,biological effects of lysolecithin,and penetration of LDL into the arterial wall are discussed.
机译:血小板活化因子(PAF)及其细胞类似物1-O-alk-1'-烯基-2-乙酰基-sn-甘油-3-磷胆碱(1-烯基-PAF)和1-酰基-2-乙酰基的作用-sn-glycero-3-phosphocholine(1-acyl-PAF)在体外对人白细胞的趋化作用及其体内的炎症和抗炎活性进行了研究。两种类似物均在琼脂糖凝胶上刺激了人类白细胞的趋化作用.PAF和1-烯基-PAF( 10-100杯/爪)比PAF或1-烯基-PAF诱导的更明显。后者还通过抑制PAF或角叉菜胶诱导的大鼠爪水肿而表现出显着的抗炎作用,并且这种作用超过了地塞米松。这些炎症模型1-酰基-PAF没有表现出任何抗炎活性。数据表明,PAF并不是唯一介导炎症的细胞磷脂,其细胞类似物1-酰基-PAF和1-烯基-PAF也可能参与其中。进入炎症反应。1-酰基-PAF的细胞合成与其可能的相互关系讨论了氧化低密度脂蛋白的构象,溶血卵磷脂的生物学作用以及低密度脂蛋白向动脉壁的渗透。

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