A procedure to evaluate the quality consistency of generic drugs based on the impurity profile and the similarity analysis methods was presented in this paper. Nifedipine extended-release tablets from six generic fact...A procedure to evaluate the quality consistency of generic drugs based on the impurity profile and the similarity analysis methods was presented in this paper. Nifedipine extended-release tablets from six generic factories of China were used to evaluate the uniformity with the original drug in the study. The procedure includes: choice of chromatographic methods, data collection and conformity test, evaluation of intra-batch similarity of drugs, evaluation of generic drugs with the original drug and weighted similarity evaluation of generic drugs. The data were collected via high-performance liquid chromatography (HPLC), and then calculated by correlation coefficient, cosine, principal component analysis (PCA) and hierarchical clustering analysis (HCA). It is more suitable to use peak areas as the vector when calculating the similarity of impurity profile. After weighting the peak areas of the unspecified impurities in further evaluation of the generic quality, the generic level of different factories was differentiated and the best generic factory was picked out.展开更多
目的观察硝苯地平联合厄贝沙坦片与比索洛尔联合硝苯地平对原发性髙血压的治疗效果,探讨其临床适用性。方法选择2012年3月-2013年3月于我院就诊治疗的200例原发性高血压患者,分为实验组100例和对照组100例’对照组患者给予比索洛尔联...目的观察硝苯地平联合厄贝沙坦片与比索洛尔联合硝苯地平对原发性髙血压的治疗效果,探讨其临床适用性。方法选择2012年3月-2013年3月于我院就诊治疗的200例原发性高血压患者,分为实验组100例和对照组100例’对照组患者给予比索洛尔联合硝苯地平口服治疗,实验组患者则采用硝苯地平联合厄贝沙坦片口服治疗。观察两组患者的血压控制的有效情况。结果实验组患者服药后的治疗有效率达97.00%,明显高于对照组的90.00%,两组比较,差异有统计学意义(χ2=4.03, P 〈 0.05 )。结论硝苯地平联合厄贝沙坦片可以起到很好的降压效果,临床上与比索洛尔联合硝苯地平按照患者的具体临床表现合理应用。展开更多
文摘A procedure to evaluate the quality consistency of generic drugs based on the impurity profile and the similarity analysis methods was presented in this paper. Nifedipine extended-release tablets from six generic factories of China were used to evaluate the uniformity with the original drug in the study. The procedure includes: choice of chromatographic methods, data collection and conformity test, evaluation of intra-batch similarity of drugs, evaluation of generic drugs with the original drug and weighted similarity evaluation of generic drugs. The data were collected via high-performance liquid chromatography (HPLC), and then calculated by correlation coefficient, cosine, principal component analysis (PCA) and hierarchical clustering analysis (HCA). It is more suitable to use peak areas as the vector when calculating the similarity of impurity profile. After weighting the peak areas of the unspecified impurities in further evaluation of the generic quality, the generic level of different factories was differentiated and the best generic factory was picked out.
文摘目的观察硝苯地平联合厄贝沙坦片与比索洛尔联合硝苯地平对原发性髙血压的治疗效果,探讨其临床适用性。方法选择2012年3月-2013年3月于我院就诊治疗的200例原发性高血压患者,分为实验组100例和对照组100例’对照组患者给予比索洛尔联合硝苯地平口服治疗,实验组患者则采用硝苯地平联合厄贝沙坦片口服治疗。观察两组患者的血压控制的有效情况。结果实验组患者服药后的治疗有效率达97.00%,明显高于对照组的90.00%,两组比较,差异有统计学意义(χ2=4.03, P 〈 0.05 )。结论硝苯地平联合厄贝沙坦片可以起到很好的降压效果,临床上与比索洛尔联合硝苯地平按照患者的具体临床表现合理应用。