OBJECTIVE:To improve the detection method for the dissolution of dihydroartemisinin in Dihydroartemisinin and piperaquine phosphate tablets. METHODS:The dissolution experiment adopted paddle method using 0.1 mol/L hydrochloric acid so-lution 500 mL as solvent with rotating speed of 75 r/min and sampling time of 45 min. In sample pre-treatment,the volume of 3.6% sodium hydroxide solution was increased from 5 mL to 20 mL,and that of phosphoric acid was increased from 0.2 mL to 0.7 mL. HPLC was adopted to determine the dissolution of dihydroartemisinin. The determination was performed on YMC-Pack ODS-A column with mobile phase consisted of 0.02 mol/L disodium hydrogen phosphate solution(pH adjusted to 2.4 using phosphoric ac-id)-acetonitrile(65 : 35,V/V)at the flow rate of 1.0 mL/min. The detection wavelength was set at 237 nm,and column temperature was 30 ℃. The sample size was 20 μL. RESULTS:The linear range of dihydroartemisinin were 7.802-117.03 μg/mL(r=0.9999). The limit of quantitation was 2.0 ng,and the limit of detection was 0.6 ng. RSDs of precision and reproducibility tests were all low-er than 1.0%. The recoveries were 99.18%-100.46%(RSD=0.45%,n=9). Average dissolutions of dihydroartemisinin in 3 batch-es of samples were 94.9%,77.9%,89.6%,respectively. CONCLUSIONS:Improved method enhance the accuracy for the limit of sensitivity,dissolution and detection results.

Objective To find a proper way for accurate results on completing blood counts.Methods Based on the results from automatic hematology analyzer XE-2100,set up the criteria for blood cell microscopic examination.1368 blood specimen were detected and the results were analyzed according to the criteria.Statistics on the data were made to evaluate the accordance between warnings of analyzer and manual examination,likewise the reliability of the criteria.Results Comparing with microscopic examination,analyzer warning on low PLT has good accordance,Kappa value was 0.95,U value was 35.19,P

Objective To study the benzofuran compounds from roots and rhizomes of Ligularia caloxantha, which is a folk medicine used in the Naxi Nationality in Yunnan Province. Methods Compounds were separated and purified by silica gel and Sephadex LH-20 column chromatography. Their structures were elucidated by physicochemical properties and spectral analysis. Results Eighit compounds are isolated from ethanolic extracts of the roots and rhizomes. They were identified as euparin (Ⅰ), 6-methoxy-euparin (Ⅱ), 4, 5-dimethoxy-2-hydroxybenzaldehyde (Ⅲ), 2-acetyl-5, 6-dimethyoxybenzofuran (Ⅳ), 4-hydroxyacetophenone (Ⅴ), 2-isopropenyl-5, 6-dimethoxy-2, 3-hydrocumaran (Ⅵ), 8?-hydroxy-7(11)-eremophilen-12, 8?-olide (Ⅶ), lupeol (Ⅷ). Conclusion All the eight compounds were obtained from L. caloxantha for the first time as benzofurans. Compounds Ⅰ and Ⅱ are two major ones with insecticide and insect food refusal-induced activities. That is the relative reason of L. caloxantha used for folk anti-insect.

Objective To observe the effect of interaction in children speech therapy.Methods 90 cases with children aphasis were assessed with evaluation for delayed speech and language development by Sign-significance (S-S) method made by Chinese Rehabilitation Research Center and dysarthria evaluation, and treated.Results After treatment, all cases had different improvment on their own level and were in the process of rehabilitation care.Conclusion The speech therapy interaction is easy, economical and can stimulate children' interest to learn speech and get the training goal.

Glucose-sensitive materials have attracted much interest due to their potential application in diabetes treatment in recent years.Phenylboronic acid-based glucose-responsive polymers,which possess continuous glucose sensitivity and good stability,have been most widely used in self-regulated insulin delivery.This review covers the recent advances in PBA-functionalized nanogels (microgels),micelles,vesicles and nanoparticles.Synthesis and application of these nanomaterials are discussed.With the development of PBA-regulated polymers,these nanomaterials will migrate from laboratory to clinical use in the near future.

To study in vitro anti-influenza viral activities of Chinese traditional patent medicines for influenza prevention and treatment, neuraminidase (NA) activity assay was used to examine NA inhibitory activity of 33 Chinese traditional patent medicines through fluorimetric assay, and influenza virus induced cytopathic effect (CPE) inhibition assay was used to verify their anti-influenza viral activities in vitro. The assay results showed that most liquid preparations displayed relatively high NA inhibitory activities, such as Shuanghuanglian oral liquid, Qingkailing oral liquid, Qingre Jiedu oral liquid, and Reduning injection. Among liquid preparations, Shuanghuanglian oral liquid not only displayed the highest NA inhibitory effect, but also exhibited obvious in vitro anti-viral activity in CPE experiment. Among solid preparations, Shuanghuanglian powder for injection showed the highest activity on NA inhibition, and Fufang Yuxingcao tablet showed relatively strong anti-influenza viral activity in CPE cells. From the results, it can be concluded that most Chinese traditional patent medicines possessed NA inhibitory activity, but only a few of them displayed significant in vitro anti-influenza viral activities. These results will provide important information for the isolation of active constituents, and for the clinical uses of Chinese traditional patent medicines for influenza treatment and prevention.

In order to enhance the specificity of TNF-α monoclonal antibody to inflamed site, a bispecific antibody BsDb that targets TNF-α and the extra-domain B (ED-B) of fibronectin (FN) was constructed by covalently linking the anti-TNF-α single chain Fv antibody (TNF-scFv) and the anti-ED-B scFv L19 via a flexible peptide linker deriving from human serum albumin (HSA). ED-B is an antigen specifically expressed at the inflamed site. BsDb is expressed in E. coli, identified by immunoblot, and purified with affinity chromatography. This was followed by further examination of its bioactivities and pharmacokinetics. We demonstrated that BsDb retained the immunoreactivity of its original antibodies as it could simultaneously bind to TNF-α and ED-B and neutralize the biological action of TNF-α. In the collagen-induced arthritis mice model, BsDb selectively accumulate in the inflamed joint with a maximal uptake of (12.2 ± 1.50)% ID/g in a single inflamed paw and retain in the inflamed paw for at least 72 h. In contrast, BsDb showed a short serum half-life of (0.50 ± 0.05) h and a rapid clearance from normal tissues. The findings reported herein indicate that BsDb has good specificity to the inflamed site and low toxicity to normal tissues. BsDb is therefore likely to have greater clinical applications in the treatment of rheumatoid arthritis and other autoimmune diseases. This laid a stable basis for its preclinical study.

CBS(Case Based Study)is a new teaching method,which is based on the case given.It requires students to answer questions according to the case. In the teaching,the students who are divided into groups,seek for resolvent by themselves. They should combine the information provided in the case,find the key answer and the relationship.The students gain the knowledge by reviewing and studying in the textbook,then analyse and solve questions with them. The application of CBS could make knowledge more relatively and systematic, moreover,it also make study more actively and initiatively.

Object To perform detail studies on different species of Ligusticum L (Uumbelliferae) currently prescribing in Yunnan Province for the purpose to clarify the claotic state of its clinical use Methods By literature retrieval, field and market center inspection and pharmacognostic identification in comparison with those documented in classical literatures to arrive at a reasonable evaluation Results Two varieties of Ligusticum L., the Huanggaoben and Heigaoben were currently in common use in Yunnan Province Huanggaoben, the yellow ligusticum, was originated from Sinodielsia yunnanensis Wolff and Ligusticum delavayi Franch Heigaoben, the balck ligusticum, was oringinated from Ligusticum pteridophyllum Franch Conclusion The study may provide references for the further study and clinical use of this medicinal plant