Objective: To investigate the effect of Tangshentang on the expression of LOX-1 and secretion of TGF-?1,FN,ColⅣ in cultured rat masengial cells(RMCs) induced by ox-LDL and to explore its molecular mechanism of preventing and treating diabetic nephropathy.Methods: The cultured RMCs were divided into control group,ox-LDL group,Tangshentang group(respectively high,medium and low group)and rosiglitazone group.The mRNA expression was tested by RT-PCR.Synthesis of TGF-?1,FN,ColⅣ in cultured RMCs were determined by ELISA methods.Results: Tangshentang drug serum significantly attenuated up-regulation of TGF-?1,LOX-1 mRNA expression and synthesis of TGF-?1,FN,ColⅣ in a dose-dependent manner,with the peak at middle concentration,in RMCs stimulated by ox-LDL(50?g/ml).Conclusion: Tangshentang drug serum may protect kidney from injury by ox-LDL via the decreased expression of LOX-1 to reduce the uptake of ox-LDL and subsequently inhibiting TGF-?1 secretion,as well as the deposition of FN,ColⅣ.

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.

OBJECTIVETo establish a chemical fingerprint method for reorganizing and validating angelica different processed products.

METHODA 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.

RESULTThere 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.

CONCLUSIONThe 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.

Angelica ; chemistry ; classification ; China ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; standards ; Food Handling ; Plant Roots ; chemistry ; Quality Control

Objective : To examine the impact and partial mechanism of bupivacaine sustained-release drug ( code PB21) in combination with low-dose dexamethasone ( Dex) on the analgesic time of rats with knee osteoarthritis (KOA) ． Methods : Using the techniques of anterior cruciate ligament transection and meniscus instability，a rat KOA model was created．After eight weeks，SD mice were split into three groups at random : a group for the model， one for Dex (50 μg) ，one for PB21 ( 1. 5 mg) ，and one for combined administration ( 1. 5 mg PB21 /50 μg Dex) ， with a control group that received a sham operation．The pain thresholds of KOA rats were measured using a Pres- sure Application Measurement (PAM) at different intervals before to delivery and 4，24，36，and 48 hours following administration ; to gauge changes in discomfort，a CatWalk was used to assess the rats' average foot strength and maximum contact area before，four，twenty-four，and forty-eight hours after treatment．A portion of the rats were put to sleep at four，twenty-four，and forty-eight hours following the injection，and the joint synovium was removed for paraffin sectioning．Immunohistochemistry was used to identify the expression of GAP43 in the synovium，whereas immunofluorescence was used to identify the expression of CGRP in the same tissue. Results : The average strength and maximum contact area of the foot and claw decreased (P ＜0. 01 ) ，and the pain threshold decreased (P < 0. 01) in the model group compared to the sham operation group．The PB21 + Dex group experienced a delayed pain threshold lowering time delay when compared to the PB21 and Dex treatment groups alone．Up to 48 hours lat- er，the combination administration group's average strength and maximum contact area of the foot paw remained ele- vated，and there was a statistically significant difference (P ＜0. 05 ) between the combined administration group and PB21 and Dex alone．GAP43 and CGRP expression levels in synovial tissue were detected．The results indica- ted that PB21 and Dex alone could lower protein expression levels at 4 and 24 h at the two time points，and that the PB21 + Dex group could still significantly lower GAP43 and CGRP expression levels at 48 h．At the 48 h time point，the PB21 + Dex group was statistically significant when compared to the PB21 and Dex alone administration group(P＜0. 05) ． Conclusion In summary low dose dexamethasone can prolong the analgesic effect of PB21 on KOA rats，which is connected to reducing the expression of pain related proteins CGRP and GAP43 .