Quality control and discrimination of angelica different processed products based on HPLC fingerprints combined chemometrics methods / 中国中药杂志

<p><b>OBJECTIVE</b>To establish a chemical fingerprint method for reorganizing and validating angelica different processed products.</p><p><b>METHOD</b>A high-performance liquid chromatographic method was developed to establish the fingerprint. Principal component analysis, hierarchical cluster analysis and discriminate analysis were applied to study HPLC finger printing and chemical pattern reorganization.</p><p><b>RESULT</b>There were difference of characteristic peaks and its relative peak area of HPLC fingerprints between different processed products. Fish's discriminate functions were generated by using six selected predictor variables, the tested samples of different processed products were classified with 100% accuracy, and discriminate analysis plots for the five groups were well-resolved.</p><p><b>CONCLUSION</b>The developed HPLC finger print, combined with chemometrics, can accurately identify and validate angelica different processed products, the research provide theoretical basis for the processing mechanism and quality assess of angelica different processed products.</p>

Establishment of a quality evaluation method for Angelica different processed products from genuine producing areas based on data mining / 药学学报

The paper reports the development of a quality evaluation method for Angelica different processed products. The data of high-performance liquid chromatography, water, total ash and extract were analyzed with SPSS Clementine 11.0 software. Discriminant analysis (DA) established the classification model and parameter for Angelica different processed products. Fish's discriminant functions of Angelica different processed products were generated using 8 predictor variables selected from 59 indexes. The correct rate of discriminating back substitution is 96.7%. Angelica different processed products can be accurately and reliably recognized and validated with DA of SPSS Clementine 11.0 software.

Change of apoptosis of alveolar cells and expression of apoptotic related genes in ischemia/reperfusion induced pulmonary injury: an experimental pulmonary embolism with rabbits / 解放军医学杂志

Objective To evaluate the changes of alveolar cells apoptosis and the expression of related genes in pulmonary injury induced by ischemia/reperfusion (I/R) in acute experimental pulmonary embolism of rabbits. Methods The left lung artery of rabbits were obstructed by inflating gas of 5F Berman sacculus catheter, then the gas of sacculus was put out to result in blood reperfusion. Thirty-six New Zealand rabbits of either gender and weighing 2.5 to 3.0 kg were studied, and randomly divided into six groups: control group (control), sham operation group (sham), ischemia 1h group (I 1h), ischemia 2h group (I 2h), ischemia2h and reperfusion 1h group (IR 1h), ischemia 2h and reperfusion 2 h group (IR 2h). Alveolar cells apoptosis and Bax, Bcl-2, Fas/FasL protein expression were studied By using flow-cytometry and immunocytochemistry techniques. Results The lung apoptosis cell number was increased in ischemia groups compared with control and sham group. The reperfusion after ischemia further increased the apoptosis cell numbers compared with simple ischemia, and the longer time reperfusion,the larger number of cell apoptosis. Bax, Bcl-2, Fas and FasL protein expression were significantly higher in ischemia, ischemia/reperfusion group than that in those of control groups (P