Yao Y.,University of Sichuan |
Yao Y.,Guangdong ZhongSheng Pharmaceutical Co. |
Zhou Y.,University of Sichuan |
Su X.,University of Sichuan |
And 5 more authors.
Establishing a feasible intraperitoneal (i.p.) xenograft model in nude mice is a good strategy to evaluate the antitumor effect of drugs in vivo. However, the manipulation of human cancer cells in establishing a stable peritoneal carcinomatosis model in nude mice is problematic. In the present study, the ovarian and colorectal peritoneal tumor models were successfully established in nude mice by co-injection of human tumor cells and extracellular matrix gel. In ovarian tumor models, the mean number tumor nodes was significantly higher in the experimental group (intraperitoneal tumor cell co-injection with ECM gel) compared with the PBS control group on the 30th day (21.0±3.0 vs. 3.6±2.5; P<0.05). The same results were observed in the colorectal peritoneal tumor models on the 28th day. The colorectal peritoneal tumor model was further used to evaluate the chemotherapy effect of irinotecan (CPT-11). The mean weight of peritoneal tumor nodes in CPT-11 treatment group was significantly less than that of the control group (0.81±0.16 vs. 2.18±0.21 g; P<0.05). The results confirmed the value of these i.p. xenograft models in nude mice as efficient and feasible tools for preclinical evaluation. © 2015, Spandidos Publications. All rights reserved. Source
Rapid Identification and Simultaneous Quantification of Multiple Constituents in Nao-Shuan-Tong Capsule by Ultra-Fast Liquid Chromatography/Diode-Array Detector/Quadrupole Time-of-Flight Tandem Mass Spectrometry
Li P.,Sun Yat Sen University |
Su W.,Sun Yat Sen University |
Xie C.,Guangdong ZhongSheng Pharmaceutical Co. |
Zeng X.,Sun Yat Sen University |
And 3 more authors.
Journal of Chromatographic Science
A rapid and high-sensitive ultra-fast liquid chromatography coupled with a diode-array detector and a quadrupole/time-of-flight mass spectrometry (MS) method was established and validated for the chemical profiling of Nao-shuan-tong capsule (NSTC) and simultaneous quantification of five major constituents. A total of 59 components including monoterpene glycosides, flavonoids, sesquiterpenoids, ketosteroids, thiophenes, organic acids and alkaloids were identified or tentatively characterized in NSTC based on the accurate mass and tandem MS behavior. Five major bioactive constituents were chosen as the chemical indexes of holistic quality evaluation and quantified simultaneously. All calibration curves showed good linear regression (r2 > 0.9991) in the range 25.2-510, 145-2,900, 1.84-36.8, 2.61-52.2 and 3.25-26.2 μg/mL for gastrodin, paeoniflorin, typhaneoside, β-ecdysterone and isorhamnetin-3-O-neohesperidoside, respectively. It also showed good precision, stability and accuracy for quantification of these five compounds. The limit of detections and limit of quantitations for the analytes ranged from 0.14 to 1.09 μg/mL and from 0.47 to 3.63 μg/mL, respectively. The validated quantification method was applied to analyze 10 batches of commercial NSTC. These results will provide a basis for quality control of the production process and the further pharmacological study in vivo of NSTC. © 2014 The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: firstname.lastname@example.org. Source
Sheng S.,Sun Yat Sen University |
Sheng S.,Guangdong ZhongSheng Pharmaceutical Co. |
Wang Y.,Sun Yat Sen University |
Long C.,Guangdong ZhongSheng Pharmaceutical Co. |
And 2 more authors.
Biotechnology and Biotechnological Equipment
Fufang Xueshuantong (FXST) capsule, a Chinese medicinal formula composed of four herbals - Panax notoginseng, Radix Astragali, Radix Salvia Miltiorrhizae and Radix Scrophulariaceae, has been used to treat cardiovascular diseases for many years, but the pharmacological mechanisms underlying its effects has not been clarified. This study investigates if a connection between FXST and angiotensin converting enzyme (ACE) might be an explanation for its pharmacological effects. ACE inhibition assay was performed on FXST capsule, 50% ethanol extracts from the four herbals and three selected saponins most abundant in P. notoginseng (Ginsenoside Rg1, Ginsenoside Rb1 and Notoginsenoside R1) using a biochemical test. Reversed-phase high-performance liquid chromatography of liberated hippuric acid from the ACE assay was conducted to determine the inhibitory effect. As a result, FXST and extracts from P. notoginseng showed a significant and dose-dependent inhibition on ACE activity with the IC50 values of 115 μg/ml and 179 μg/ml, respectively. But extracts from the other three herbals and the three selected saponins had no significant effect on ACE inhibition. Compared to other reported plant extracts, FXST could be considered as an effective ACE inhibitor. The inhibition of ACE activity supports the traditional use of FXST on blood circulation and the inhibitory property of FXST is mainly caused by P. notoginseng. © 2014 The Author(s). Published by Taylor & Francis. Source
Jin Y.,Zhejiang University |
Yang K.,Zhejiang University |
Chen M.,Guangdong ZhongSheng Pharmaceutical Co. |
Liu X.,Zhejiang University |
And 3 more authors.
Zhongguo Zhongyao Zazhi
Objective: To establish a simple and rapid method based on diffuse reflectance NIR spectra to in-line monitor the blending process of Zhongsheng pill powder. Method: Zhongsheng pill powder consisted of Zhongsheng spray powder, artificial cowbezoar powder and bile arisaema powder. By means of a revolutionary miniature near-infrared analyzer mounted onto the blender, the powder homogeneity was determined in real time with noninterference. The moving block standard deviation (MBSD) method was used to identify the end point of blending process, providing real-time data and instant feedback about the blending course. Evaluation of blend uniformity was carried out by stratified in-process sampling, and the content of baicalin in samples was determined by high performance liquid chromatography (HPLC). Result: The results calculated through MBSD method were generally coincided with HPLC analysis. Blend homogeneity was assumed to be reached when the standard deviations between spectra approached 0.002, and RSD values of baicalin content in samples from six positions were lower than 5%. Moreover, stratified in-process sampling has significant influence on blending process when the powder loading volume was small. Conclusion; Based on this study, NIR spectroscopy can be possibly extended to be applied in blending process of Zhongsheng pill powder, ensuring a remarkable saving of time and manpower employed and creating a reliable and efficient process measurement technology. Source
Core bioactive components promoting blood circulation in the traditional chinese medicine compound xueshuantong capsule (CXC) based on the relevance analysis between chemical HPLC fingerprint and in vivo biological effects
Liu H.,Sun Yat Sen University |
Liang J.-P.,Sun Yat Sen University |
Li P.-B.,Sun Yat Sen University |
Peng W.,Sun Yat Sen University |
And 5 more authors.
Compound xueshuantong capsule (CXC) is an oral traditional Chinese herbal formula (CHF) comprised of Panax notoginseng (PN), Radix astragali (RA), Salvia miltiorrhizae (SM), and Radix scrophulariaceae (RS). The present investigation was designed to explore the core bioactive components promoting blood circulation in CXC using high-performance liquid chromatography (HPLC) and animal studies. CXC samples were prepared with different proportions of the 4 herbs according to a four-factor, nine-level uniform design. CXC samples were assessed with HPLC, which identified 21 components. For the animal experiments, rats were soaked in ice water during the time interval between two adrenaline hydrochloride injections to reduce blood circulation. We assessed whole-blood viscosity (WBV), erythrocyte aggregation and red corpuscle electrophoresis indices (EAI and RCEI, respectively), plasma viscosity (PV), maximum platelet aggregation rate (MPAR), activated partial thromboplastin time (APTT), and prothrombin time (PT). Based on the hypothesis that CXC sample effects varied with differences in components, we performed grey relational analysis (GRA), principal component analysis (PCA), ridge regression (RR), and radial basis function (RBF) to evaluate the contribution of each identified component. Our results indicate that panaxytriol, ginsenoside Rb1, angoroside C, protocatechualdehyde, ginsenoside Rd, and calycosin-7-O-β-D-glucoside are the core bioactive components, and that they might play different roles in the alleviation of circulation dysfunction. Panaxytriol and ginsenoside Rb1 had close relevance to red blood cell (RBC) aggregation, angoroside C was related to platelet aggregation, protocatechualdehyde was involved in intrinsic clotting activity, ginsenoside Rd affected RBC deformability and plasma proteins, and calycosin-7-O-β-D-glucoside influenced extrinsic clotting activity. This study indicates that angoroside C, calycosin-7-O-β-D-glucoside, panaxytriol, and protocatechualdehyde may have novel therapeutic uses. Copyright: © 2014 Liu et al. Source