In the teaching reform of cytobiology,we should first formulate a reasonable syllabus according to training goals,pay attention to course content reform,strengthen connection with other preclinical medicine subjects,combine quality-oriented education in class instruction,and cultivate students scientific and original spirit.The experimental courses should be offered from higher level and be conformed with subject development.The teacher should have innovative thinking,adopt diversified teaching methods,and fully arouse students' study enthusiasm.

A new method of the separation of hydrocarbons and glycerides in liver oil of Mustelus jriseas was designed. The Waters Prep-500A Liquid Chromatograph with silica gel column and differential refractive index detector was used. The mobile phase was petroleum ether and ethyl acetate. The pure hydrocarbons' and glycerides were obtained from the liver oil.

Tripterygium Hypoglaucum Hutch and Tripterygium Wilfordii Hook.f are all Evonymus alata family Tripterygium Wilfordii genus plants.They are generally used in the clinical treatment in department of dermatology.They resemble each other not only in some chemical constitutions,but also in some pharmacologic actions(such as anti-inflammatory,anti-tumor,immune suppression,antifertility and so on),but they are all poisonous plants.When they are used for therapy,they can induce some toxic reactions,even the death of patients.In order to facilitate the adoption of the two drugs,we review their pharmacologic actions.

Objective To investigate the relationship between the serum concentration of amiodarone and QT dispersion.Methods The serum concentration of Am and DEA were determined by HPLC during the treatment in forty Patients to study the relationship between the serum concentration and QTd.Results After using amiodarone,QT interval was significantly increased[(383±31)ms vs(418±29)ms,P＜0.05].In the same time QTd was significantly decreased[(34±12)ms vs(21±9)ms,P＜0.05].With maintaining dosage,the serum concentration of DEA had positive relationship with the increment of QT(r=0.50,P＜0.05).While with loading dosage,the serum concentration of amiodarone had no relationship with it.The serum concentration of amiodarone had no relationshiP with the decrement of QTd in all patients.And it varied in a large range.Between the groups of different therapeutic effect,the serum concentration had no statistical difference.Two patients appeared the adverse effects.Their serum concentration of amiodarone weren't higher than the average concentration of the group.Conclusion The serum concentration of amiodarone couldn't be an index tO estimate the effect and the occurrence of adverse effects.

Objective To probe into the application feature and use tendency of traditional Chinese medicine (TCM) injections in our hospital;To evaluate rational drug use and provide reference for related researches. Methods TCM injections in our hospital during 2010-2012 were analyzed by employing the analytic method of defined daily dose, with a purpose to evaluate frequency of drug use and rationality of medication expenses. Results From 2010 to 2012, drug possession rate of TCM injections in our hospital was 4.07%-4.47%;the amount of medication accounted for 10.50%to 12.69%of the amount of all drugs;the annual growth rate increased significantly, among which TCM injections used for removing blood stasis took the lead;frequency of drug use rose annually;medication synchrony in 3 years indicated that daily expensesof Shenkang Injection, Aidi Injection, salvianolateinjection, safflor yellow sodium chloride injection and other TCM injections were on the high side. Conclusion From 2010 to 2012, TCM injections in the clinical application in our hospital were of relatively high frequency, and the TCM injections used for removing blood stasis took the lead. Daily expenses of TCM injections drugs were on the high side and there may be unreasonable application.

Magnetic polymer microspheres are a novel functional material that has been developed recently.This kind of organic-inorganic nanoparticles composites can lead to many reactive functional groups on the surface of microspheres by means of copolymerization and surface modification.Moreover,this kind of materials is strongly response to the magnetic field.As the carrier of enzyme,cell and drug,it can be widely applied in many fields,such as bio-engineering,cytology,biomedical science and so on.The recent research progresses of magnetic polymer microspheres are reviewed.The preparation and characterization of magnetic microspheres are also introduced.Immobilization of enzyme onto magnetic polymer microspheres is emphasized and every method of immobilized enzyme is compared and analyzed.The prospects of magnetic polymer microsphere are also proposed.

This paper is to prepare curcumin (Cur) loaded mesoporous silica nanoparticle (Cur-MSN), evaluate its release behavior and anti-cancer activity in vitro. Mesoporous silica nanoparticle (MSN) was prepared by polymerization method and Cur-MSN was obtained using solvent evaporation method and impregnation centrifugation method. The preparation method was optimized using entrapment efficiency (EE) and loading efficiency (LE) as indexes. Cur-MSN was characterized with scanning electron microscope and its particle size and zeta potential were determined. Finally, in vitro release behavior in 0.2% SDS solution and its cell-killing effect on HeLa cells were also evaluated. The Cur-MSN prepared with process optimization method was round and uniform and exhibited typical mesoporous characterization. The mean particle size and Zeta potential of Cur-MSN were 75.8 nm and -30.1 mV, respectively. EE and LE of three batches of Cur-MSN were (72.55 ± 2.01)% and (16.21 ± 1.12)%, respectively. In vitro release behavior of Cur-MSN showed a sustained release profile with 83.5% cumulative release within 96 h. The killing effect of Cur-MSN on HeLa cells was dose-dependent with IC50 of 19.40 mg x L(-1), which was similar to that of Cur.
Antineoplastic Agents, Phytogenic ; chemistry ; pharmacology ; Curcumin ; chemistry ; pharmacology ; Drug Carriers ; chemistry ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Nanoparticles ; chemistry ; Neoplasms ; drug therapy ; Particle Size ; Porosity ; Silicon Dioxide ; chemistry

BACKGROUND: Previous research has indicated that bone marrow-derived mesenchymal stem cells had immunological regulation and hematopoiesis role. There were significant differences in immunological regulation and hemopoietic function between patients with aplastic anemia and normal cases. OBJECTIVE: To summarize the in vitro biological characteristics and its immune regulation defects of bone marrow-derived mesenchymal stem cells from patients with aplastic anemia.METHODS: A computer-based online search was conducted in PUMMED (1987-2009) and VIP database (1989-2009) with the key words of "mesenchymal stem cell, bone marrow" in both Chinese and English. There were 55 articles in total. Articles which were related to biological characteristics and its immune regulation defects of bone marrow-derived mesenchymal stem cells were included; however, duplicated articles were excluded. Finally, 32 articles were included, containing 3 reviews in English, 23 original articles in English, and 6 original articles in Chinese. RESULTS AND CONCLUSION: Bone marrow-derived mesenchymal stem cells had the capacities of high proliferation, self-renewal and multilineage differentiation; in addition they had the roles of supporting hematopoiesis, promoting implantation and hematopoietic reconstitution in vivo. Bone marrow-derived mesenchymal stem cells still had the effects of negative immune regulation and reducing the incidence of graft-versus-host disease (GVHD). Aplastic anemia correlated with hematopoietic stem cells in the pathogenesis of intrinsic defects in the proliferation or differentiation of hematopoietic microenvironment and immune system abnormalities and other related disorders. Bone marrow-derived mesenchymal stem cells of patients with aplastic anemia played an important role in the pathogenesis of this disease.

Objective To study the effect of heat shock protein 40(HSP40) and heat shock protein 70(HSP70) on the aggregate formation of mutant huntingtin (htt) and its toxicity in N2a cells. Methods The effect of the over-expression of HSP40 and HSP70 alone or co-over-expression of them on aggregate formation of transfected mutant htt (containing 150 glutamine repeats, 150Q) in N2a cells was detected by fluorescence microcopy and Western blotting. Cell viabilities were detected by MTT assay. Reactive oxygen species (ROS) production was detected by colorimetric method. Results The over-expression of HSP40 and HSP70 alone, especially the co-over-expression of them, dramatically decreases the formation of 150Q htt aggregates in N2a cells. The numbers of aggregates in each group are as follows ( n = 1 000): about 50% in the group of 150Q htt-expressing alone, about 12% in the group of over-expression of HSP40, about 15% in the group of over-expression of HSP70, about 5% in the group of co-over-expression of HSP40 and HSP70. The result of MTT assay shows that the over-expression of HSP40 and HSP70 alone, especially the co-over-expression of them, dramatically increases cell viabilities ( P<0.01, n =3) and reduces the production of ROS ( P<0.01, n =3). Conclusion HSP40 and HSP70 can increase cell viabilities of 150Q N2a cells via inhibiting the aggregates formation of mutant huntingtin and reducing oxidative stress.

Communication barriers between doctors and patients are the main reasons leading to contradictions between doctors and patients. The paper analyzes the existing barriers in the information communication process, including language barrier, time barrier and communication psychological barrier, some possible strategies of dredging are proposed such as popularizing the medical information, establishing communication mechanism between doctors and patients, and improve the communication ability of doctors.