A method for the determination of Pt、Pd、Ru、Rh 、Ir and Au in geological samples was studied. The sample was fused by sodium pe roxide and determined by a double focusing high resolution inductively coupled p lasma mass spectrometer “ELEMENT” after the separation and enrichment by co-precipitation with Te. Detection limit of the method was between 1～9ng/g and the recovery was ＞90%. Our analytical results for some domestic or interna tional reference materials were in agreement with the certified values.

AIM:To establish the method for quality control of Suhong Tongluo Tincture(eugenol and methylsalicylate). METHODS: Gas phase chromatogram approach was used to determine the content of eugenol and(methylsalicylate.) The chromatogram condition consisted of 10% PEG-20M,carrier was N2(99.999%),temperature of the entrance of the column was at 230(?C),temperature of the detector was at 250(?C);column temperature was at 70(?C)(4 min),3(?C)/min→90(?C)(4 min),then 13(?C)/min→200(?C)(3 min);0.5 ?L Sample quantity. RESULTS: The linear range of methylsalicylate was 2.41-14.21 ?g,r=0.999 7,the average recovery was (99.76%),RSD=(2.64%(n=6).) The linear range of eugenol was 2.43-14.34 ?g,r=0.999 96,the average recovery was (99.33%),RSD=2.47%(n=6). CONCLUSION: This method is simple,quick,accurate and reliable for the quality control of Suhong Tongluo Tincture.

Objective To investigate the optimum formulation and preparation process of Yuxiawenya dispersible tablets.Methods The formula of Yuxiawenya dispersible tablets were optimized by orthogonal design in terms of dispersible uniformity test.Results The tablets were prepared by moist granulation method with 1% polyvidone k30(PVPK30) ethanol solutionsas as moistening agent,microcrystalling cellulose(MCC) as diluents,and sodium croscarboxymethyl starch(CCMS-Na) as disintegrant.The disintegration time of dispersible formulation was

ObjectiveTo investigate the effects of 5-Aza-CdR on the transcriptional regulation through methylation of the DNA promoter protocadherin 8(PCDHg) gene in pancreatic cancer cell line Capan-2.The Capan-2 retardation in growth rate and apoptosis were assessed in when administered 5-Aza-CdR and the chemotherapy agent,gemcitabine.MethodsMTT and flow cytometry were used to analyze the cell growth inhibition and apoptosis when treated with 5-Aza-CdR or in combination with gemcitabine.Methylation-specific PCR,RT-PCR and western blot were performed to detect methylation state,mRNA and protein respectively of PCDH8 gene in 5-Aza-CdR-treated Capan-2cells.Results Capan-2 cells treated with 5-Aza-CdR showed a slower growth rate,and a significant growth inhibition when given both 5-Aza-CdR in combination with gemcitabine.Compared with single drug administration and control,5-Aza-CdR together with gemcitabine can induce a stronger apoptosis signal.Different concentrations 5-Aza-CdR of were able to reverse methylation,restore mRNA and protein levels of PCDH8 in Capan-2.Conclusion5 Aza-CdR may demethylate the PCDH8 gene,which would effectively remove the gene silencing caused by high methylation,and thus induce gene mRNA transcription and protein expression to inhibit cell growth and have collaborative antitumor functions with gemcitabine.

Objective To choose the optimum extraction process for capsule of Buyang Huanwu.Methods With the orthogonal method,the main factors effecting the water-extraction process,such as the quantity of water,the time,pH and degree for decoction,were reviewed according the content of total glycoside and Astragalus Glycoside A.Results The optimum condition of water-extraction was extracting with 8 times amount of water for the first time and 4 times amount for the second and third time,1 hour for each time,pH was 12.Conclution The experimental results provide the basis for the water extraction process for capsule of Buyang Huanwu.

Objective To establish ultra-high performance liquid chromatography-evaporative light scattering detector (UPLC-ELSD) method to determine the content of astragaloside in Guiqi Yiqi Yangxue Mixture and optimize the best water decoction process of the mixture.Methods The UPLC-ELSD conditions to determine the content of astragaloside in the mixture were as follow.The method was carried out on a Waters Acquity UPLC BEH C18 column (2.1 mm ×50 mm,1.7 μm) by using acetonitrile-water (35∶65) as mobile phase, and the flow rate was 0.3 mL/min and the column temperature 30℃.The parameter of ELSD:the drift tube temperature was set at 60℃, and the gas flow rate of N2 2.0 L/min.The content of paeoniflorin in the mixture was detected by previously established HPLC method.The orthogonal test was designed to optimize the water decoction process of the amount of water (A), decoction time (B) and decoction times (C), and the extract yield and the contents of astragaloside and paeoniflorin were evaluated as the comprehensive markers for the purpose.Results The UPLC-ELSD determination of astragaloside had a good linear relationship (r =0.9999), its mean recovery was 103.0%, and it had a good precision, specificity and repeatability.The orthogonal experimental results showed that decoction times (C) >the amount of water (A) >decoction time (B) were major factors affecting the decoction process in order and the ANOVA result showed that decoction times has significant effect on the decoction process (P<0.05).The optimal process of Guiqi Yiqi Yangxue Mixture was adding eight-fold water each time to decoct twice for 1.5 h totally.Conclusion This optimized water decoction process is feasible and stable, and suitable for industrialized production.

To use Agrobacterium rhizogenes-induced hairy roots to create new germplasm of Dianthus caryophyllus, we transformed D. caryophyllus with A. rhizogenes by leaf disc for plant regeneration from hairy roots. The white hairy roots could be induced from the basal surface of leaf explants of D. caryophyllus 12 days after inoculation with A. rhizogenes ATCC15834. The percentage of the rooting leaf explants was about 90% 21 days after inoculation. The hairy roots could grow rapidly and autonomously in liquid or solid phytohormone-free MS medium. The transformation was confirmed by PCR amplification of rol gene of Ri plasmid and silica gel thin-layer chromatography of opines from D. caryophyllus hairy roots. Hairy roots could form light green callus after cultured on MS+6-BA 1.0-3.0 mg/L + NAA 0.1-0.2 mg/L for 15 days. The optimum medium for adventitious shoots formation was MS + 6-BA 2.0 mg/L + NAA 0.02 mg/L, where the rate of adventitious shoot induction was 100% after cultured for 6 weeks. The mean number of adventitious shoot per callus was 30-40. The adventitious shoots can form roots when cultured on phytohormone-free 1/2 MS or 1/2 MS +0.5 mg/L NAA for 10 days. When the rooted plantlets transplanted in the substrate mixed with perlite sand and peat (volume ratio of 1:2), the survival rate was above 95%.
Agrobacterium ; Chromatography, Thin Layer ; Culture Media ; Dianthus ; growth & development ; Plant Growth Regulators ; Plant Leaves ; Plant Roots ; growth & development ; Plants, Genetically Modified ; Rhizobium ; Tissue Culture Techniques ; Transformation, Genetic

Objective To evaluate cerebrospinal fluid adenosine deaminase(CSF-ADA)activity in the diagnosis of tuberculous meningitis(TMB), and to observe its dynamic changes. Methods A total of 160 patients were included and were divided into two groups: 76 cases of TBM and 84 cases of non-TBM.Among the cases of non-TBM, there were 36 cases of bacterial meningitis, 30 cases of viral meningitis and 18 cases of cryptocoocal meningitis. All the patients were measured with their CSF-ADA activity by Enzymecoupled assay(Trinder method)and 47 patients of TBM were measured again after 2 weeks' and 6 weeks'antitubercular therapy. Results were expressed as(-x)± s. Mann-Whitney U test and paired-samples t test were used. Results CSF-ADA activity in TBM group was(12.9 ±6.4)U/L, while that in the non-TBM group was(6.0 ± 4.1)U/L, the difference was of statistical significance(U = 7.860, P ＜ 0.05). With the cutoff value of 9 U/L, the sensitivity and specificity to differentiate TBM from non-TBM was 84.21% and 83. 33%, respectively. CSF-ADA activity decreased in TBM patients after antitubercular treatment.Conclusions CSF-ADA activity can be an effective laboratory marker for early differential diagnosis of TMB with the cut-off value of 9 U/L. Dynamic changes of CSF-ADA activity may be a indicator for the effect of antitubercular treatment.

Objective To study comparatively the clinical efficacy of pelvic floor muscle exercise (PFMlE)and surgical therapy in women with moderate stress urinary incontinence(SUI),in order to provide theoretical reference for finding an appropriate SUI treatment method. Methods 114 cases of women with moderate SUI were randomly divided into the treatment group and the control group. The control group Wag given surgical thempy. while the treatment group was given the PFME treatment. After 12 weeks the clinical efficacy and quality of life of the two groups were evaluated, the cost-benefit was analyzed. Results The total effective rate of treatment group was 86.2%.higher than 83.9% of the control group. Compared with before treatment, the I-QOL scores of the two groups increased significantly, the ICIQ scores of the two groups decreased significantly, and the treatment group was significantly different compared with the control group. The cost-benefit analysis showed that the total medical cost and the spending cost of the total clinical effective rate increased l percent and the I-QOL increased 1 score were significantly lower than that of the control group. Conclusions The PFME therapy of women with moderate SUI is the preferred treatment and it is worthy of promotion and application.

Objective:To investigate the efficiency of maternal serum triple screening for the genetic abnormality in second-trimester and the morbidity of adverse pregnancy outcome in false positive results of the test. Methods: A total of 4 680 pregnant women with singleton pregnancies assigned in Obs & Gyn Hospital, Fudan University, underwent triple screening test (alpha fetoprotein, AFP; human chorionic gonadotropin, HCG and unconjugated estriol, uE3) by fluorescence enzyme immunoassay between 2003 and 2005. The valid MoM (Multiples of Median) value of mid-trimester serum AFP, uE3, and hCG and risk assessments was provided by Beckman Coulter Co. When applied in the prenatal Down syndrome screening service. The study compares the incidence of chromosomal abnormalities with Down syndrome in screen positive women and compares to the MoM value established in the literature. The risks of having a fetus with congenital abnormalities or of developing obstetric complications in the screen positive women with their matched controls.Results:The MoM values for the triple tests of our study are similar to established values of literature. Only 51.01% women with pregnancies agree to receive screening. Amniocentesis utilization rate was 55.12% in the screen-positive pregnancies. The false positive rate was 6.89% and the median of maternal age of the women was 28.13 (range 19 to 49) years old. Chromosomal abnormalities were identified in 21 pregnancies, including 9 cases of trisomy 21.The detection rate was 77.77%. Pregnancies with positive screening results had a significantly higher risk of adverse outcomes than those with negative results (P< 0.05). Whereas there was no difference in the incidences of fetal congenital appearance or skeleton abnormality. Conclusion: Adjusting MoM values of local unaffected populations is limited to increasing the detection rate. Because chromosomal defects have variable exhibitions, amniocentesis utilization is still a choice for screen-positive pregnancies. Screen-positive pregnancies had increased risk of chromosomal abnormalities.