Suzhou Institute for Food and Drug Control

Suzhou, China

Suzhou Institute for Food and Drug Control

Suzhou, China
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Chen R.,Suzhou Institute for Food and Drug Control | Xue M.,Suzhou Institute for Food and Drug Control | Chen W.,Suzhou Hospital of Traditional Chinese Medicine | Wu Q.,Nanjing University
Journal of Chinese Pharmaceutical Sciences | Year: 2014

Polysaccharides were isolated from Semen Euryales by water extraction, alcohol precipitation and deproteinization. A refined polysaccharide, named EPJ, was separated into nine fractions by DEAE52 cellulose chromatography and one of them was separated into two fractions by Sephadex G100 column. The molecular weight of EPJ was determined to 15 367 Da and the monosaccharide composition was mainly glucose and rhamnose with the molar ratio of 5.46:1. The FTIR spectra showed carbohydraterelated absorbance of polysaccharide functional groups. In vitro assay showed EPJ could significantly scavenge DPPH radical, superoxide anion, hydrogen peroxide and exhibited a strong reducing power. In vivo assay indicated that EPJ was effective in a Dgalactose induced aging mice model. Results showed EPJ significantly inhibited formation of MDA and increased the activities of SOD, CAT, GSHPx in a dosedependent manner in mice tissues. The findings obtained from this study indicated that polysaccharides from Semen Euryales could be explored for a wide prospect of benefit. © 2014 Journal of Chinese Pharmaceutical Sciences, School of Pharmaceutical Sciences, Peking University.


Zhou F.,China Pharmaceutical University | Hao G.,China Pharmaceutical University | Hao G.,Suzhou Institute for Food and Drug Control | Zhang J.,China Pharmaceutical University | And 9 more authors.
British Journal of Pharmacology | Year: 2015

Background and Purpose The clinical use of doxorubicin, an effective anticancer drug, is severely hampered by its cardiotoxicity. 23-Hydroxybetulinic acid (23-HBA), isolated from Pulsatilla chinensis, enhances the anticancer effect of doxorubicin while simultaneously reducing its cardiac toxicity, but does not affect the concentration of doxorubicin in the plasma and heart. As the metabolite doxorubicinol is more potent than doxorubicin at inducing cardiac toxicity, in the present study we aimed to clarify the role of doxorubicinol in the protective effect of 23-HBA. Experimental Approach Doxorubicin was administered to mice for two weeks in the presence or absence of 23-HBA. The heart pathology, function, myocardial enzymes and accumulation of doxorubicin and doxorubicinol were then analysed. A cellular pharmacokinetic study of doxorubicin and doxorubicinol, carbonyl reductase 1 (CBR1) interference and molecular docking was performed in vitro. Key Results 23-HBA alleviated the doxorubicin-induced cardiotoxicity in mice, and this was accompanied by inhibition of the metabolism of doxorubicin and reduced accumulation of doxorubicinol selectively in hearts. In H9c2 cells, the protective effect of 23-HBA was shown to be closely associated with a decreased rate and extent of accumulation of doxorubicinol in mitochondria and nuclei. siRNA and docking analysis demonstrated that CBR1 has a crucial role in doxorubicin-mediated cardiotoxicity and 23-HBA inhibits this metabolic pathway. Conclusions and Implications Inhibition of CBR-mediated doxorubicin metabolism might be one of the protective mechanisms of 23-HBA against doxorubicin-induced cardiotoxicity. The present study provides a new research strategy guided by pharmacokinetic theory to elucidate the mechanism of drugs with unknown targets. © 2014 The British Pharmacological Society.


Sun L.,National Institutes for Food and Drug Control | Zhang C.,Suzhou Institute for Food and Drug Control | Tian R.-T.,Chemmind Technologies Co. | Liu L.-N.,National Institutes for Food and Drug Control | And 3 more authors.
Chinese Pharmaceutical Journal | Year: 2015

OBJECTIVE: To propose and establish a novel holistic strategy of identification and quality evaluation of frankincense by chromatographic fingerprint analysis. METHODS: The strategy contained five steps. The first step was multi-species sample collection. The second was to establish fingerprint identification and assay under the same chromatographic conditions. The third was components identification by means of reference substances and LC-MS. The fourth was multivariate analysis for identification and classification of certified products and adulterants. The fifth was to evaluate TCMs using similarity threshold and content range criteria. RESULTS: Twenty-six chromatographic peaks were separated and fourteen were identified. Furthermore, HCA heatmap analysis, principal component analysis, partial least squares discrimination, self-organizing map clustering, and support vector machine were used for pattern recognition. The common patterns for three species of frankincenses were established. The content ranges for KBA and AKBA were also calculated. CONCLUSION: The method is specific and can be used to accurately identify and systematically evaluate medicinal frankincense. ©, 2015, Chinese Pharmaceutical Association. All right reserved.


PubMed | Shanghai JiaoTong University, Suzhou Institute for food and drug control and Soochow University of China
Type: | Journal: Cellular signalling | Year: 2016

An important therapeutic method of glioblastoma, the most common primary brain tumor, is radiotherapy. However, several studies reported recently that radiation could also promote the invasion and migration of malignant tumor. Herein, we have identified that a significant increase of migration and invasiveness of human glioma U251 cells undergoing X-ray was observed compared to controls, accompanied by the increase of cathepsin L (CTSL), which is a lysosomal cysteine protease overexpressed and secreted by tumor cells. To verify if there was a relationship between CTSL and the X-ray-induced glioma invasion, a CTSL specific inhibitor Z-FY-CHO or a short hairpin RNA interference was used to pretreat U251 cells. As a result, the cell invasion and migration was impaired via down-regulation of CTSL. Additionally, a marked reduction of the cell-signaling molecules Rho kinase was also detected compared with controls. We also found that CTSL is involved in EMT progress: both in vitro and in clinical specimens. Overall, our findings show that CTSL is an important protein which mediates cell invasion and migration of human glioma U251 cells induced by X-ray, and the inhibition of CTSL expression might diminish the invasion of U251 cells by reducing the activity of RhoA and CDC42 as well as EMT positive markers.


PubMed | Suzhou Institute for Food and Drug Control, Chemmind Technologies Co. and National Institutes for Food and Drug Control
Type: Journal Article | Journal: Journal of separation science | Year: 2015

Frankincense has gained increasing attention in the pharmaceutical industry because of its pharmacologically active components such as boswellic acids. However, the identity and overall quality evaluation of three different frankincense species in different Pharmacopeias and the literature have less been reported. In this paper, quantitative analysis and chemometric evaluation were established and applied for the quality control of frankincense. Meanwhile, quantitative and chemometric analysis could be conducted under the same analytical conditions. In total 55 samples from four habitats (three species) of frankincense were collected and six boswellic acids were chosen for quantitative analysis. Chemometric analyses such as similarity analysis, hierarchical cluster analysis, and principal component analysis were used to identify frankincense of three species to reveal the correlation between its components and species. In addition, 12 chromatographic peaks have been tentatively identified explored by reference substances and quadrupole time-of-flight mass spectrometry. The results indicated that the total boswellic acid profiles of three species of frankincense are similar and their fingerprints can be used to differentiate between them.


Yu Y.,Soochow University of China | Zhang Q.,Soochow University of China | Xu W.,Soochow University of China | Lv C.,Soochow University of China | Hao G.,Suzhou Institute for Food and Drug Control
European Journal of Drug Metabolism and Pharmacokinetics | Year: 2016

The aim of the study was to develop a population pharmacokinetic (PPK) model of oxcarbazepine and optimize the treatment of oxcarbazepine in Chinese patients with epilepsy. A total of 108 oxcarbazepine therapeutic drug monitoring samples from 78 patients with epilepsy were collected in this study. The pharmacologically active metabolite 10,11-dihydro-10-hydrocarbamazepine (MHD) was used as the analytical target for monitoring therapy of oxcarbazepine. Patients’ clinical data were retrospectively collected. The PPK model for MHD was developed using Phoenix NLME 1.2 with a non-linear mixed-effect model. MHD pharmacokinetics obeys a one-compartment model with first-order absorption and elimination. The effect of age, gender, red blood cell count, red blood cell specific volume, hemoglobin (HGB), alanine aminotransferase (ALT), aspartate aminotransferase (AST), blood urea nitrogen (BUN), and serum creatine were analyzed. Bootstrap and data splitting were used simultaneously to validate the final PPK models. The mean values of volume of distribution and clearance of MHD in the patients were 14.2 L and 2.38 L h−1, respectively. BUN and HGB influenced the MHD volume of distribution according to the following equation: V = tvV × (BUN/4.76)−0.007 × (HGB/140)−0.001 × eηV. The MHD clearance was dependent on ALT and gender as follows: CL = tvCL × (ALT/30)0.181 × (gender) × 1.083 × eηCL. The final PPK model was demonstrated to be suitable and effective and it can be used to evaluate the pharmacokinetic parameters of MHD in Chinese patients with epilepsy and to choose an optimal dosage regimen of oxcarbazepine on the basis of these parameters. © 2015, Springer International Publishing Switzerland.


Hao G.,Suzhou Institute for Food and Drug Control | Yu Y.,Soochow University of China | Gu B.,Suzhou Institute for Food and Drug Control | Xing Y.,Suzhou Institute for Food and Drug Control | Xue M.,Suzhou Institute for Food and Drug Control
Xenobiotica | Year: 2015

The clinical use of doxorubicin, an effective anticancer drug, is severely hampered by its cardiotoxicity. Berberine, a botanical alkaloid, has been reported to possess cardioprotective and antitumor effects. In this study, we investigated the cardioprotective effect of berberine on doxorubicin-induced cardiotoxicity and the effect of berberine on the metabolism of doxorubicin.2. Adult male Sprague-Dawley rats were administered doxorubicin in the presence or absence of berberine for 2 weeks. Administration of berberine effectively prevented doxorubicin-induced body weight reduction and mortality in rats.3. Berberine reduced the activity of myocardial enzymes, including aspartate aminotransferase (AST), creatine kinase (CK), CK isoenzyme (CK-MB) and lactate dehydrogenase (LDH). Echocardiographic examination further demonstrated that berberine effectively ameliorated cardiac dysfunction induced by doxorubicin.4. Berberine inhibited the metabolism of doxorubicin in the cytoplasm of rat heart and reduced the accumulation of doxorubicinol (a secondary alcohol metabolite of doxorubicin) in heart.5. These data showed that berberine alleviated the doxorubicin-induced cardiotoxicity in rats via inhibition of the metabolism of doxorubicin and reduced accumulation of doxorubicinol selectively in hearts. © 2015 Informa UK Ltd.


Chen L.,Suzhou Institute for Food and Drug Control | Chen W.,Suzhou Institute for Food and Drug Control | Qian X.,Suzhou Institute for Food and Drug Control | Fang Y.,Suzhou Institute for Food and Drug Control | Zhu N.,Suzhou Institute for Food and Drug Control
Scientific Reports | Year: 2014

This study assessed the potential antinociceptive effects of liquiritigenin, a plant-derived compound with transient receptor potential melastatin 3 blocking activity in a rat model of persistent neuropathic pain. Chronic constriction injury (CCI) to the sciatic nerve was induced in male Sprague-Dawley rats to model human peripheral neuropathic pain. Liquiritigenin (1, 3, or 9 €.mg/kg) was administered intraperitoneally to examine the effects on mechanical, thermal, and cold hyperalgesia using the von Frey test, plantar test, and cold plate test, respectively. A rotarod test was also conducted to examine motor function. Liquiritigenin dose dependently alleviated mechanical, thermal and cold hyperalgesia. In addition, daily repeated treatment with liquiritigenin did not demonstrate significant antinociceptive tolerance in the measures of hyperalgesia. Within the doses studied, liquiritigenin did not significantly affect motor performance. These results suggest that liquiritigenin may be potentially useful novel treatments for neuropathic pain.


PubMed | Suzhou Institute for Food and Drug Control
Type: Journal Article | Journal: Acta pharmaceutica Sinica. B | Year: 2015

Near infrared spectroscopy (NIRS) has been widely applied in both qualitative and quantitative analysis. There is growing interest in its application to traditional Chinese medicine (TCM) and a review of recent developments in the field is timely. To present an overview of recent applications of NIRS to the identification, classification and analysis of TCM products, studies describing the application of NIRS to TCM products are classified into those involving qualitative and quantitative analysis. In addition, the application of NIRS to the detection of illegal additives and the rapid assessment of quality of TCMs by fast inspection are also described. This review covers over 100 studies emphasizing the application of NIRS in different fields. Furthermore, basic analytical principles and specific examples are used to illustrate the feasibility and effectiveness of NIRS in pattern identification. NIRS provides an effective and powerful tool for the qualitative and quantitative analysis of TCM products.


PubMed | Suzhou Institute for Food and Drug Control
Type: | Journal: Scientific reports | Year: 2014

This study assessed the potential antinociceptive effects of liquiritigenin, a plant-derived compound with transient receptor potential melastatin 3 blocking activity in a rat model of persistent neuropathic pain. Chronic constriction injury (CCI) to the sciatic nerve was induced in male Sprague-Dawley rats to model human peripheral neuropathic pain. Liquiritigenin (1, 3, or 9 mg/kg) was administered intraperitoneally to examine the effects on mechanical, thermal, and cold hyperalgesia using the von Frey test, plantar test, and cold plate test, respectively. A rotarod test was also conducted to examine motor function. Liquiritigenin dose dependently alleviated mechanical, thermal and cold hyperalgesia. In addition, daily repeated treatment with liquiritigenin did not demonstrate significant antinociceptive tolerance in the measures of hyperalgesia. Within the doses studied, liquiritigenin did not significantly affect motor performance. These results suggest that liquiritigenin may be potentially useful novel treatments for neuropathic pain.

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