Yong-Hua Su

Second Military Medical University, Shanghai, Shanghai, Shanghai Shi, China

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Publications (10)8.5 Total impact

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    ABSTRACT: A highly sensitive liquid chromatography-tandem mass spectrometric (LC-MS/MS) method was developed for the determination of actinoside E in rat plasma. The analytes were extracted by ethyl acetate and an analogue of actinoside F was used as the internal standard. The mobile phase consisted of methanol-water (50: 50, V/V) containing 0.1% formic acid was delivered at a flow rate of 0.3 mL·min(-1) to a Zorbax SB-C18 column (100 mm × 2.1 mm, 3.5 μm). The detection was performed by electrospray ionization mass spectrometry in the negative multiple reaction monitoring mode with a chromatograph run time of 3.0 min. Calibration curves of actinoside E were linear in the range of 0.5-2 500 ng·mL(-1). In this range, intra- and inter-day precision ranged from 1.7% to 7.5% and 2.0% to 8.9%, respectively. The accuracy ranged from 95.7% to 108.6%, and extraction recovery from 83.2% to 85.5%. This method was successfully applied to a pharmacokinetic study of actinoside E in rats after intravenous (5 mg·kg(-1)) and oral (100 mg·kg(-1)) administration, and the results showed that actinoside E was poorly absorbed with an absolute bioavailability being approximately 0.27%.
    No preview · Article · Jul 2013
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    ABSTRACT: Two new triterpenoids, 30-O-β-D-glucopyranosyloxy-2α,3α,24-trihydroxyurs-12, 18-diene-28-oic acid O-β-D-glucopyranosyl ester (1) and 2α,3β,3,30-tetrahydroxyurs-12, 18-diene-28-oic acid O-β-D-glucopyranosyl ester (2) were isolated from roots of Actinidia valvata Dunn. Their structures were elucidated by means of extensive spectroscopic studies. Both these two new compounds showed moderate cytotoxic activity in vitro against BEL-7402 and SMMC-7721 tumor cell line.
    Full-text · Article · Dec 2012 · International Journal of Molecular Sciences
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    ABSTRACT: To determine the bufalin concentration in rats' plasma by establishing a high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method, and to evaluate and compare the pharmacokinetic characteristics of bufalin-loaded bovine serum albumin nanoparticles (bufalin-BSA-NP) and bufalin. Thirty Wistar rats were randomly divided into six groups with five rats in each group, and administered with a single dose of 0.6, 0.3 and 0.15 mg/kg of bufalin-BSA-NP or bufalin, respectively. After the administration, blood samples were collected from the orbital venous plexus at designed time points (1, 5, 8, 10, 15, 20, 30, 45, 60, 120, 180, 300 and 480 min). The concentration of bufalin in plasma at different sampling time points was determined by HPLC-MS/MS. The pharmacokinetic parameters were calculated and compared. The established HPLC-MS/MS method had high linearity, precision and accuracy. The blood plasma area under curve, the mean retention time and the terminal half life of bufalin-BSA-NP were 1.19 to 1.81, 2.12 to 3.61 and 2.17 to 2.94 times of bufalin, respectively. Bufalin-BSA-NP has the function of sustained release thus to prolong the bufalin remaining in blood.
    No preview · Article · Jun 2012 · Journal of Chinese Integrative Medicine
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    ABSTRACT: Two novel flavonoids, kaempferol 3- O- α-L-rhamnopyranosyl (1-3) (2,4-di- O-acetyl-α-L-rhamnopyranosyl) (1-6) β-D-galactopyranoside (1) and kaempferol 3- O-α-L-rhamnopyranosyl (1-3) (4-O-acetyl-α-L-rhamnopyranosyl) (1-6) β-D-galactopyranoside (2), along with three known ones, kaempferol-3- O-β-D-galactopyranoside (3), kaempferol (4), and 7-hydroxychromone (5), have been isolated from the leaves of Actinidia valvata Dunn, and their structures were elucidated based on spectroscopic methods. Compounds 1-3 exhibited dose-dependent activity in scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radicals, superoxide anion radicals, and hydroxyl radicals, and inhibited lipid peroxidation of mouse liver homogenate IN VITRO.
    No preview · Article · Jan 2011 · Planta Medica

  • No preview · Article · Aug 2010 · Chinese Journal of Natural Medicines
  • Chang-quan Ling · Yong-hua Su
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    ABSTRACT: The past decade has witnessed the remarkable progress on nanotechnology and nanoherb. With the globally rapid development of nanotechnology, we are considering to construct new nanoformula systems of traditional Chinese medicine (TCM) by using porous materials, multilayered core-shell particles or nanoparticles containing various multifunctional parts. With the compatibility of sovereign, minister, assistant and courier in a formula, new nanoformula systems of TCM will have various advantages, such as containing multiple active species, controlled release, targeting function, and labeling and tracing capabilities. Using the latest breakthroughs of nanotechnology for the modern research of TCM will greatly help enhance the ability to investigate the principles of TCM, and to design, screen and utilize new nanoformula systems of TCM.
    No preview · Article · Feb 2010 · Journal of Chinese Integrative Medicine
  • Chen Zhang · Bai Li · Shu-qin Lu · Yong Li · Yong-hua Su · Chang-quan Ling
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    ABSTRACT: To observe the effects of melittin on the expressions of mitochondria membrane protein 7A6, cell apoptosis-related gene products Fas and Fas ligand (FasL) in hepatocarcinoma cells in vitro and to study the mechanisms of melittin in inducing apoptosis of hepatocarcinoma cells. BEL-7402 cell line was treated with melittin in vitro. The expressions of mitochondria membrane protein 7A6, cell apoptosis-related gene products Fas and FasL were detected by flow cytometry. Fas and FasL mRNAs were analyzed by reverse transcription polymerase chain reaction (RT-PCR) assay. The expression rates of mitochondria membrane protein 7A6 of BEL-7402 hepatocarcinoma cells in 8, 16, 32 microg/ml melittin-treated and control groups were 4.89%, 17.74%, 11.45% and 1.02%, respectively. The expression of Fas protein was up-regulated by melittin, while FasL expression did not change. RT-PCR results showed that Fas mRNA expression was up-regulated by 32 microg/ml melittin and FasL mRNA expression was not observed. The effects of melittin in inducing hepatocarcinoma cell apoptosis may be related with up-regulating the expressions of mitochondria membrane protein 7A6 and Fas protein.
    No preview · Article · Oct 2007 · Journal of Chinese Integrative Medicine
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    ABSTRACT: To investigate anti-tumor activities and apoptosis-regulated mechanisms of bufalin in the orthotopic transplantation tumor model of human hepatocellular carcinoma in nude mice. BEL-7402 cells of human hepatocellular carcinoma were inoculated to form subcutaneous tumors, and were implanted into the liver to establish orthotopic transplantation tumor models of human hepatocellular carcinoma in nude mice. Seventy-five animals were randomized divided into five groups (n = 15). Bufalin was injected intraperitoneally into three groups at doses of 1.5 mg/kg (BF1), 1 mg/kg (BF2) and 0.5 mg/kg (BF3) for d 15-24, respectively. The NS group was injected an equal volume of saline as above and adriamycin was injected intraperitoneally into the ADM group at a dose of 8.0 mg/kg for d 15. Ten mice in each group were killed at d 25 and the survival time in each group was calculated. We also observed the morphologic alterations in the myocardium, brain, liver, kidney and tumor tissues by pathology and electron microscopy, measured the apoptotic rate by TUNEL staining method, and detected the expression of apoptosis-regulated genes bcl-2 and bax by immunohistochemical staining and RT-PCR in tumor tissues. The tumor volumes in each group of bufalin were reduced significantly (35.21 +/- 12.51 vs 170.39 +/- 25.29; 49.83 +/- 11.46 vs 170.39 +/- 25.29; 83.99 +/- 24.63 vs 170.39 +/- 25.29, P < 0.01, respectively), and the survival times were prolonged in group BF1-2 (31.8 +/- 4.2 vs 23.4 +/- 2.1 and 29.4 +/- 3.4 vs 23.4 +/- 2.1, P < 0.05, respectively), and necrosis was mainly in severe or moderate degree in group BF1-2. No morphological changes were detected in the myocardium, brain, liver and kidney tissues. Apoptotic characteristics could be seen in group BF1-2. The positive rates of bcl-2 and bax protein expression of each group by immunohistochemical staining were 10.0%, 10.0%, 20.0%, 10.0% and 20.0%; 90.0%, 80.0%, 80.0%, 40.0% and 30.0%, respectively. Loss of expression of bcl-2 mRNA in each group was to be found and the density of bax mRNA was increased progressively with increase of dose of bufalin by RT-PCR. Bufalin has significant anti-tumor activities in the orthotopic transplantation tumor model of human hepatocellular carcinoma in nude mice with no marked toxicity and was able to induce apoptosis of transplanted tumor cells. This apoptosis may be mediated mainly via up-regulating the expression of apoptosis-regulated gene bax, which may be involved in its anti-tumor mechanism of bufalin.
    Preview · Article · Jun 2007 · World Journal of Gastroenterology
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    ABSTRACT: To investigate the anti-tumor effect of bufalin and its regulation on Bcl-2 and Bax proteins in orthotopically transplanted tumor of human hepatocellular carcinoma in nude mice. Orthotopically transplanted tumor of human hepatocellular carcinoma was established in nude mice. The mice were randomly divided into five groups: high-dose bufalin-treated group (1.5 mg/kg), medium-dose bufalin-treated group (1 mg/kg), low-dose bufalin-treated group (0.5 mg/kg), adriamycin-treated group (8.0 mg/kg), and normal saline-treated group. After 25 days, mice were sacrificed. The tumor volume was measured, and the pathological changes of tumor tissues were detected by HE staining to observe the tumor necrosis degree. Cell morphological changes were also observed by an electron microscopy. Label index of tumor cell apoptosis was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), and the expressions of Bcl-2 and Bax proteins were determined by immunohistochemical method. The tumor volume in the bufalin-treated groups was shrunk significantly compared with that in the normal saline-treated group (P<0.01). The survival time of the bufalin-treated groups was prolonged compared with that of the adriamycin-treated group and the normal saline-treated group P<0.05. Apoptotic characteristics could be seen in tumor tissues of the bufalin-treated groups. The label index of tumor cell apoptosis in the bufalin-treated groups (5.87+/-2.13, 8.86+/-2.96 and 10.60+/-3.42 in low-, medium- and high-dose groups respectively) was higher than that in the adriamycin-treated group (3.28+/-0.98) (P<0.05, P<0.01). The expression of Bax was up-regulated, while no changes were detected as to Bcl-2 protein in tumors of the bufalin-treated groups. Bufalin has significant anti-tumor effect on the orthotopically transplanted tumor of human hepatocellular carcinoma in nude mice. Its effect might be related to up-regulation of Bax protein and inducement of the tumor cell apoptosis.
    Preview · Article · Mar 2007 · Journal of Chinese Integrative Medicine
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    ABSTRACT: To study the feasibility of the establishment of the orthotopic transplantation tumor model of hepatocellular carcinoma in mice and its tumor biological characteristics. H22 cells of hepatocellular carcinoma were inoculated to form ectopic transplanted model in mice by subcutaneous injection. Then the subcutaneous tumors were implanted into the liver of mice, and the orthotopic transplantation tumor model of hepatocellular carcinoma was established. The successful rate of the orthotopic transplantation tumor model was 95.6% and the spontaneous metastatic rate was 81.8%, the rate of mass ascites was 40.9% and the natural extinctive rate was 0%. The natural survival time in the orthotopic transplantation tumor model was 28 days and the proliferation of tumor in transplanted model was accelerated after 2 weeks or so. The orthotopic transplantation tumor model in mice is an ideal model for studying the metastatic mechanism and screening anti-tumor drugs for liver cancer, just because of its high successful rate and high spontaneous metastatic rate with no natural extinction.
    No preview · Article · Oct 2004 · Journal of Chinese Integrative Medicine

Publication Stats

92 Citations
8.50 Total Impact Points


  • 2011-2013
    • Second Military Medical University, Shanghai
      Shanghai, Shanghai Shi, China
  • 2012
    • Shanghai University of Traditional Chinese Medicine
      • Institute of Chinese Materia Medica
      Shanghai, Shanghai Shi, China
  • 2004-2010
    • Changhai Hospital, Shanghai
      Shanghai, Shanghai Shi, China