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ANALYSIS OF THE ROLE OF DELTA OPIOID RECEPTORS IN GASTROPROTECTION IN THE RAT

机译:δ阿片受体在大鼠胃肠保护中的作用分析

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The effect of delta opioid agonists - [D-Ala(2), D-Leu(5)]-enkephalin (DADLE), [D-Pen(2), D-Pen(5)]-enkephalin (DPDPE) and deltorphin II - on acidified ethanol induced gastric mucosal lesions was studied in the rat compared with that of morphine. It was found that DADLE, DPDPE, deltorphin II and morphine exerted a dose-dependent inhibition on the mucosal lesions injected subcutaneously, their ID50 values were 0.037, 1.8, 3.5 and 0.35 mu moles/kg, respectively. Naltrindole (10 mg/kg sc.), the selective delta opioid receptor antagonist, inhibited the gastroprotective effect of DADLE, DPDPE and deltorphin II, but it failed to antagonise the effect of morphine. Our results suggest that 1. delta receptors are involved in opioid-mediated gastroprotection, 2, ethanol-induced gastric mucosal damage in the rat may be a quick, simple in vivo model for screening opioid delta receptor agonists and antagonists in the periphery. [References: 54]
机译:δ阿片类激动剂-[D-Ala(2),D-Leu(5)]-脑啡肽(DADLE),[D-Pen(2),D-Pen(5)]-脑啡肽(DPDPE)和deltorphin的作用II-对酸化乙醇诱导的大鼠胃粘膜病变与吗啡进行了比较。发现DADLE,DPDPE,deltorphin II和吗啡对皮下注射的粘膜病变具有剂量依赖性抑制作用,其ID50值分别为0.037、1.8、3.5和0.35μmol/ kg。选择性三角洲阿片受体拮抗剂纳曲酮(10 mg / kg sc。)抑制DADLE,DPDPE和deltorphin II的胃保护作用,但未能拮抗吗啡的作用。我们的结果表明:1.δ受体参与阿片样物质介导的胃保护作用; 2,乙醇诱导的大鼠胃粘膜损伤可能是一种快速,简单的体内模型,用于筛选外周阿片样物质δ受体激动剂和拮抗剂。 [参考:54]

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