Objective To study the effect of cyclosporine A drug delivery system (CsA-DDS) on the prevention of posterior capsule opacification (PCO) after experimental intraocular lens implantation in rabbit eyes. Methods Twenty...Objective To study the effect of cyclosporine A drug delivery system (CsA-DDS) on the prevention of posterior capsule opacification (PCO) after experimental intraocular lens implantation in rabbit eyes. Methods Twenty healthy New Zealand white rabbits, whose left eyes and right eyes were used respectively as experiment eyes and controls, were subjected to extracapsular lens extraction and artificial lens implantation. During the operation, CsA-DDS with poly (lactideco-glycolide) as carriers or empty DDS was implanted in the capsular bag for the experimental eyes and controls respectively. After the operation, anterior chamber reaction, intraocular pressure (IOP) and CsA concentration were monitored and twelve weeks after the operation, the eyes were extracted for histopathological and morphological examinations. Results There were no differences between the two groups in conjunctival congestion, IOP change and anterior chamber reaction. PCO was less severe in the experimental eyes than in the controls. Light microscopy revealed that posterior capsular membrane in the experimental eyes was slick, with no obvious proliferation, whereas in the controls, there were lens epithelial cell proliferation and cortex regeneration of different degrees. Morphological examination with electron microscope showed that in the experimental eyes, lens epithelial cells did not function actively and apoptosis occurred, whereas in the controls, epithelial cells presented active function. No marked ultrastructural changes were found in either group. Conclusion Cs-DDS can inhibit PCO after intraocular lens implantation in rabbit eyes and does not have toxic effects on the surrounding ocular tissues. Therefore, it has a good potential for clinical use in prevention of PCO.展开更多
目的:以牛磺熊去氧胆酸和牛磺鹅去氧胆酸为指标,建立龙泽熊胆胶囊中熊胆粉的含量测定方法。方法:采用高效液相色谱串联蒸发光检测器,色谱柱为ChromCore AQ C 18(4.6 mm×250 mm,5μm),乙腈(A)-5 mmol•L^(-1)醋酸铵溶液(B)为流动相,...目的:以牛磺熊去氧胆酸和牛磺鹅去氧胆酸为指标,建立龙泽熊胆胶囊中熊胆粉的含量测定方法。方法:采用高效液相色谱串联蒸发光检测器,色谱柱为ChromCore AQ C 18(4.6 mm×250 mm,5μm),乙腈(A)-5 mmol•L^(-1)醋酸铵溶液(B)为流动相,梯度洗脱(0~40 min,25%A;40~50 min,25%A→29%A;50~80 min,29%A;80~100 min,29%A→40%A),流速1.0 mL•min^(-1),柱温30℃,ELSD漂移管温度110℃,氮流量2.5L•min^(-1)。结果:牛磺熊去氧胆酸进样量在1.069~9.57μg内、牛磺鹅去氧胆酸进样量在0.74046~7.40464μg内,进样量的对数与峰面积的对数呈良好的线性关系;仪器精密度、重复性、稳定性试验的RSD<2.0%;经低、中、高3个浓度的准确度试验考察,牛磺熊去氧胆酸的回收率为95.2%~97.7%,牛磺鹅去氧胆酸的回收率为91.9%~95.9%。测定样品42批次,牛磺熊去氧胆酸和牛磺鹅去氧胆酸的含量分别为0.18~0.43、0.10~0.44 mg•粒^(-1)。结论:本法适用于龙泽熊胆胶囊中熊胆粉的质量控制,可为完善龙泽熊胆胶囊的质量标准提供科学的依据。展开更多
目的:采用HPLC法同时检测宫瘤消胶囊(GLX)中13种成分含量,并联合化学计量学及灰色关联度分析(GRA)对GLX质量进行综合评价。方法:以Dikmatech Diamonsil Plus C18为色谱柱,乙腈-0.1%磷酸为流动相,同时测定GLX中党参炔苷、紫丁香苷、鸡矢...目的:采用HPLC法同时检测宫瘤消胶囊(GLX)中13种成分含量,并联合化学计量学及灰色关联度分析(GRA)对GLX质量进行综合评价。方法:以Dikmatech Diamonsil Plus C18为色谱柱,乙腈-0.1%磷酸为流动相,同时测定GLX中党参炔苷、紫丁香苷、鸡矢藤次苷甲酯、车叶草苷酸、车叶草苷、氧化芍药苷、芍药苷、丹皮酚、香附烯酮、圆柚酮、α-香附酮、莪术二酮和莪术醇的含量。采用化学计量学挖掘影响GLX产品质量的主要标记物。基于灰色关联度法分析不同批次GLX各指标成分数据,以相对关联度为测度,对GLX综合质量进行评价。结果:13种成分在各自范围内线性关系良好(r>0.999),平均加样回收率(n=9)在96.81%~100.19%之间(RSD<2.0%)。化学计量学分析显示莪术二酮、香附烯酮、丹皮酚、车叶草苷、党参炔苷、鸡矢藤次苷甲酯、芍药苷和氧化芍药苷是影响GLX产品质量的主要潜在标志物。灰色关联度分析相对关联度0.3302~0.6068,GLX存在一定批间差异。结论:所建立的HPLC多组分定量联合化学计量学及灰色关联度分析方法,操作便捷、结果准确、全面客观,可用于GLX质量的综合评价,为该制剂质量控制提供参考。展开更多
基金supported by the Scientific and Technological Project of Shaanxi Province (No.2003k10-G113)
文摘Objective To study the effect of cyclosporine A drug delivery system (CsA-DDS) on the prevention of posterior capsule opacification (PCO) after experimental intraocular lens implantation in rabbit eyes. Methods Twenty healthy New Zealand white rabbits, whose left eyes and right eyes were used respectively as experiment eyes and controls, were subjected to extracapsular lens extraction and artificial lens implantation. During the operation, CsA-DDS with poly (lactideco-glycolide) as carriers or empty DDS was implanted in the capsular bag for the experimental eyes and controls respectively. After the operation, anterior chamber reaction, intraocular pressure (IOP) and CsA concentration were monitored and twelve weeks after the operation, the eyes were extracted for histopathological and morphological examinations. Results There were no differences between the two groups in conjunctival congestion, IOP change and anterior chamber reaction. PCO was less severe in the experimental eyes than in the controls. Light microscopy revealed that posterior capsular membrane in the experimental eyes was slick, with no obvious proliferation, whereas in the controls, there were lens epithelial cell proliferation and cortex regeneration of different degrees. Morphological examination with electron microscope showed that in the experimental eyes, lens epithelial cells did not function actively and apoptosis occurred, whereas in the controls, epithelial cells presented active function. No marked ultrastructural changes were found in either group. Conclusion Cs-DDS can inhibit PCO after intraocular lens implantation in rabbit eyes and does not have toxic effects on the surrounding ocular tissues. Therefore, it has a good potential for clinical use in prevention of PCO.
文摘目的:采用HPLC法同时检测宫瘤消胶囊(GLX)中13种成分含量,并联合化学计量学及灰色关联度分析(GRA)对GLX质量进行综合评价。方法:以Dikmatech Diamonsil Plus C18为色谱柱,乙腈-0.1%磷酸为流动相,同时测定GLX中党参炔苷、紫丁香苷、鸡矢藤次苷甲酯、车叶草苷酸、车叶草苷、氧化芍药苷、芍药苷、丹皮酚、香附烯酮、圆柚酮、α-香附酮、莪术二酮和莪术醇的含量。采用化学计量学挖掘影响GLX产品质量的主要标记物。基于灰色关联度法分析不同批次GLX各指标成分数据,以相对关联度为测度,对GLX综合质量进行评价。结果:13种成分在各自范围内线性关系良好(r>0.999),平均加样回收率(n=9)在96.81%~100.19%之间(RSD<2.0%)。化学计量学分析显示莪术二酮、香附烯酮、丹皮酚、车叶草苷、党参炔苷、鸡矢藤次苷甲酯、芍药苷和氧化芍药苷是影响GLX产品质量的主要潜在标志物。灰色关联度分析相对关联度0.3302~0.6068,GLX存在一定批间差异。结论:所建立的HPLC多组分定量联合化学计量学及灰色关联度分析方法,操作便捷、结果准确、全面客观,可用于GLX质量的综合评价,为该制剂质量控制提供参考。