重组水蛭素鼻腔喷雾剂及辅料的鼻黏膜毒性评价

Studies on the nasal epithelium toxicity of adjuvants and recombination hirudin (rHV2) nasal spary

目的:考察重组水蛭素鼻腔喷雾剂及其辅料的鼻黏膜毒性作用。方法:采用在体蟾蜍上腭模型法,光学显微镜下观察纤毛持续运动时间,考察辅料和重组水蛭素的纤毛毒性作用;采用病理学检查法考察长期给予家兔重组水蛭素鼻腔喷雾剂对鼻黏膜结构的影响。结果和结论:辅料SDS,Brij35,azone,lecithin,EDTA,menthol,ni-pagin,thiomersal可显著抑制纤毛运动(与PRS组比较P<0.05),而HP-β-CD,tween80,甘草酸单胺盐,benzalkoniumbromide,sodiumbenzoate及黏附性材料对纤毛运动影响较小;重组水蛭素鼻腔喷雾剂长期给药对鼻黏膜结构有一定影响,但此作用可在停止给药后恢复。表明辅料SDS,Brij35,azone,lecithin,EDTA,menthol,nipagin,thiomersal等的纤毛毒性较大;而HP-β-CD,tween80,甘草酸单胺盐,benzalkoniumbromide,sodiumbenzoate及黏附性材料的纤毛毒性较小,可用于鼻腔给药;黏附性材料壳聚糖可能会加重某些辅料的纤毛毒性;重组水蛭素鼻腔给药具有可行性。

Objective: To investigate the nasal epithelium toxicity of adjuvants and rHV2 nasal spary(HVS) . Method: Ciliary movement were evaluated with in situ toad palate model; The histology assessment of nasal epithelium were carried out after long-lasting and repeated use of HVS. Result and conclusion: Adjuvants included SDS, Brij 35, azone, lecithin, EDTA, menthol, nipagin and thiomersal were able to significantly inhibited the ciliary movement, while tween80, glycyrrhizic acid monoammonium salt, benzalkonium bromide,sodium benzoate and adhensive materials investigated had less influence on it. HVS was able to damaged the nasal epithelium, but this effect recovered soon after sloping administration. It was demonstrated that SDS, Brij 35, azone, lecithin, EDTA, menthol, nipagin and thiomersallt had significant cilitoxity, while tween80,glycyrrhizic acid monoammonium salt, benzalkonium bromide, sodium benzoate and adhensive materials investigated had no significance; Chitosan co-administration with some adjuvants may make the cillitoxity severer; It is available that rHV2 be administered by nasal spary.