To investigate chemical constituents from Radix Pittospori, chloroform extract of the roots was subjected to column chromatography with various chromatographic techniques. The structures were elucidated on the basis of physico-chemical property and spectral analysis. Two triterpenoids were identified as 22-acetyl-21-(2-acetoxy-2-methylbutanoyl)-R1-barrigenol(1) and 3alpha-hydroxyl-20-demethylisoaleuritolic-14(15)-ene-28, 30-dioic acid (2). Compound 1 is a new triterpene and compound 2 is isolated from this plant for the first time.

OBJECTIVE:To study the status quo of drug use in the elder hospitalized patients(over 65 years old)and their demand for drugs.METHODS:The drugs used in the 12 614 elder hospitalized patients(over 65 years old)between July,2005 and June,2006 were statistically analyzed.RESULTS:The drugs used in elder hospitalized patients totaled 1 347 kinds,which were mainly administered orally or by injection.The consumption sum of injection accounted for 85.81% of the total.The most common diseases in the elder hospitalized patients were tumor diseases,cardiovascular and cerebrovascular diseases,and which were more often seen in males than in females.CONCLUSION:The drugs used for the elder hospitalized patients were many in kinds.The expenses of injection showed a highest proportion in the total drug costs.Cerebrovascular and cardiovascular diseases and tumor diseases are main diseases that threat health of aged people.

Objective To investigate the effects of triptolide (TP) on proliferation and apoptosis of acute myeloid leukemia cell line MV411 with FMS-like tyrosine kinase 3 internal tandem duplication (FLT3-ITD), and its effect on PI3K-Akt-mTOR pathway. Methods MTT assay was used to detect the proliferation inhibition of MV411 cell proliferation treated by different concentrations of TP in 24, 48 and 72 h. Flow cytometry was used to measure the cell apoptosis rate at 48 and 72 h. Real-time fluorescent quantitative PCR was used to detect the expression of FLT3, PTEN, PI3K, Akt, mTOR mRNA on PI3K-Akt-mTOR pathway. Results After treated by 0, 5, 10, 20, 40, and 80 nmol/L TP in 24, 48 and 72 h, the viability of MV411 cells was inhibited in a time-dose dependence manner. MV411 cells was treated by 0, 10, and 20 nmol/L TP after 48 and 72 h, the cell apoptosis rates were rising with the increasing of drug concentration, there were statistical significances [48 h:(3.30±0.20) %, (17.10±0.36) %, (35.67±0.61) %, 72 h: (7.37±0.32) %, (49.33± 0.40)%, (68.92±0.11)%, all P=0.000]. The expressions of FLT3, PI3K, Akt, and mTOR mRNA were down-regulated and PTEN mRNA expression was up-regulated by TP. Conclusion TP may inhibit the proliferation and induce apoptosis of MV411 cells by affecting the expression of PI3K-Akt-mTOR pathway related genes.

Objective: To establish the qualitative and quantitative standards for Yejuhua Granules (Flos Chrysanthemi Indici). Methods: The identification was carried out by TLC. Chlorogenic acid in preparation was determined by HPLC. The HPLC conditions were:Hypersil column (4.6nm?250 nm 5?L), mobile phase of acetonitrile-0.04% phosphoric acid solution (13∶87). Results: TLC method for the identification of Yejuhua Granules was specific. HPLC for the determination of chlorogenic acid in preparation was simple and quick, accurate and reliable. Conclusion: These methods can be used for the quality control of Yejuhua Granules.

The knock out vector pHK was constructed with E coli vector pET 28a and shuttle vector pHY300PL, by using denatured DNA and homologous recombination technique, the kanamycin resistance gene ( Kan r) from integrated alkaline protease gene engineering strain BP071 was knocked out successfully, and the 11 positive clones were obtained The yield of the best positive clone BP0715 was stable as same as BP071 The methods provided the good experience for the industrial microbiology research, and it was foundation for studying on the safety of genetically modified organisms

Objective:To assess the level of phrases and sentences development of health toddlers in urban Beijing and to identify the characteristics of toddlers' grammar. Methods:This is a quantitative Cross-sectional Study. Using Chinese Communicative Development Inventory mandarin version (CCDI), a questionnaire survey was conducted among the parents or care givers of 1056 toddlers(16~30months), randomly stratified selected in two urban districts of Beijing. Results:The scores of phrases and sentences development both in girls and boys increase very quickly like a line. Toddlers of 16 months can speak five kinds of phrases and sentences, toddlers of 24 months can speak sixty seven kinds, toddlers of 30 months can speak ninety one kinds, which account for 90% of the whole phrases and sentences scores of the inventory. The younger the toddlers are and the bigger the differences of the score of phrases and sentences between the individuals are. Conclusion:The stages of age before 23 months in girls and before 25 months in boys are key and quick ones of toddlers' phrases and sentences develop. The phrases and sentences development of toddlers shows bigger differences between individuals.

Objective To study the expression of VEGF isoforms, COX-2 in esophageal cancer Methods VEGF, COX-2 mRNA expression in 40 paired samples (tumor and adjacent normal tissue) were determined by using real time RT-PCR. Results VEGF165 was overexpressed in 25 of 40(62.5 %) tumor tissues compared with in 6 of 40 (15 %) adjacent normal tissue; COX-2 was overexpressed in 28 of 40(70 %) tumor tissues compared with in 5 of 40(12.5 %) adjacent normal tissue. Conclusion This result suggests that VEGF165 and COX-2 overexpression in esophageal cancer.

: Acupotome therapy exhibits good efficacy on knee osteoarthritis in clinic. The mechanism based on its dynamic equilibrium theory is that acupotome therapy can restore normal joint stress state by changing the imbalance of mechanical equilibrium around the joint. Furthermore, it can ease inflammation, relieve pain and repair tissue structure so as to achieve its therapeutic effect. This review proposes new thoughts for the etiopathogenisis, pathology and treatment of KOA.

Objective To apply 3C3R model in problem design of PBL for pediatrics teaching.Methods The 3C3R model comprises two classes of components:core components and processing components.Core components of the model are 3C,which are content,context and connection while processing components are 3R,which are researching,reasoning and reflecting.3C3R model was used in the problem design for the PBL case of ‘ Why the mouth of Baobao became purple when he was crying?' Totally 76 eight-year program medical students and 7 tutors were enrolled as teaching object.The anonymous questionnaires from the students were collected for assessment of PBL teaching.Results The percentage of students with scores ≥4 for content in PLB problem design was 90.8％,for context was 80.3％,for connection was 64.5％,for researching was 81.6％,for reasoning was 69.7％ and for reflecting was 40.8％.The percentage of tutors with scores ≥4 for content in PLB problem design was 100％,for context was 71.4％,for connection was 28.6％,for researching was 71.4％,for reasoning was100％,for reflecting was57.1％.Both students and tutors held a positive attitude towards the component of content,context,researching and reasoning in problem design model.But the components of connection and reflection needed to be improved.Conclusion The 3C3R model is helpful for problem design of PBL in pediatric teaching.

Aim To investigate the antitumor and antiangiogenic effects of combined low-dose cyclophosphamide(CTX)and recombined VEGF protein vaccine.Methods In this experiment,H22 hepatocellular carcinoma model was established in BALB/c mice.Mice were randomly divided into four groups: control group,CTX group(CTX),VEGF protein vaccine group(V2)and CTX plus V2 group(CTX+V2).The anti-tumor efficacy and antiangiogenic effect were investigated using a subcutaneous tumor model and an intradermal tumor model.Western blot and ELISAwere further adopted to detect the specific anti-VEGF antibody.Results CTX+V2 group displayed a lower tumor volume and tumor weight than either the single therapy group in the subcutaneous tumor model(P<005 vs V2,P<001 vs CTX).Meanwhile,CTX+V2 was more effective for antagonizing tumor-associated angiogenesis compared with either the single therapy(P<005 vs V2,P<001 vs CTX).After CTX+V2 immunization,high titer of anti-VEGF antibody was detected by ELISA and verified by Western blot.Conclusion The therapy of CTX combined with V2 has significant synergistic effect against H22 hepatocellular carcinoma.