OBJECTIVE:To raise the exigency capacity of drug system to cope with the unexpected events of public heal_ th.METHODS:To set up a national drug contingency system(NDCS)for the unexpected events of public health.RESULTS:The NDCS should consist of the reserves of drugs,capacity,information and plan for emergent needs.CONCLUSION:Estab?lishment of NDCS is a way to access health mordernization.

Antiretroviral therapy(ART)has been started in an increasingly earlier period in clinical practice.However,owing to the failure of immunological reconstitution or maintenance of latent HIV-1 reservoir in present antiviral treatment,interleukin-2(IL-2)is widely used as an adjuvant to ART with a view to intensifying immunological reconstitution and to activating latent HIV-1 infections.Some conclusions could be drawn as follows,1)IL-2 can extend the half-life of CD+4 T cells and increase the number of CD+4 T cells.2)Compared with ART alone,IL-2 and HAART combination can not reduce HIV-1 related opportunistic infection or death.IL-2 clinical usage is mainly focused on purging HIV-1 reservoir.3)IL-2 combined with ART could increase out flow rate of HIV-1 latent reservoir to reduce HIV-1 infected quiescent memory cells in peripheral circulation even to an undetectable level.4)IL-2 is supposed to be used periodically and for a long period of time.

OBJECTIVE:To promote the development of hospital pharmaceutical information service(HPIS)and to bring pharmacists into full play in pharmaceutical service.METHODS:This article analyzed the running program of hospital pharmaceutical information and the existing problems in HPIS.RESULTS:New pattern of HPIS was put forward.CONCLUSION:HPIS is very important and should be promoted greatly.

OBJECTIVE： To observe the effect of drug loading， medium composition， transdermal enhancer， lauryl alcohol and azone on percutaneous permeation of oxaprozin gel in vitro.METHODS： Drug permeation test was carried out by using modified Franz-type double compartment diffusion cell and isolated mice skin in vitro as transdermal barrier.RESULTS： Under the condition of an effective area of 5.77cm2， it was found that the result was stable and the reproducibility was well with drug loading more than 1.2g， the receiver solution ethanol to normal saline=7∶ 3(v∶ v);The transdermal enhancing effect of lauryl alcohol was superior to that of azone， the effect of mixed transdermal enhancer 3％ AZ＋ 10％ LA was the best.CONCLUSION： The selection of both the optimum release condition and the best penetration enhancers provided reference for oxaprozin transdermal delivery.The standardization of gel percutaneous test in vitro was discussed preliminarily.

Obj cetive A large number of recent studies show that sevoflurane anesthesia may cause learning and memory dysfunction.The aim of this study was to explore changes of learning and memory ability and hippocampal volume in infantile rats after neonatal interrupted and repeated inhalation of 2.6% sevoflurane through detecting the learning and memory ability by Morris water maze and the hippocampus volume by MRI.Method s Thirty two neonatal SD rats were randomly devided into two groups (n=16):experimental group and control group.Rats inhalated 2.6%sevoflurane in the experimental group and 1 L/min O2 +1 L/min Air in the control group at the postnatal days of 7, 14 and 21 (P7, P14, P21). The learning and memory ability was determined by the Morris water maze test from P31 to P37;The brains of rats were scanned by mag-netic resonance imaging ( MRI) machine under anesthesia with 1%sodium pentobarbital at P37, and the brain and bilateral hippocampal volumes were measured. Results ①In the place navigation test, the escape latency had no significant difference between the two groups (P>0.05).In the spatial probe test, the dwelling time, movement distance and number of entering times in platform quadrant decreased slightly in experimental group compared with those in the control group, while there was no significant difference (P>0.05).②The brain volume [(1.53 ±0.18) cm3 vs (1.60 ±0.13) cm3] and right hippocampal volume [(16.15 ±1.76)mm3 vs(16.46 ±1.71)mm3] had no significant difference between the two groups (P>0.05).The left hippocampal volume [(16.46 ±1.71)mm3] was decreased in the experimental group compared with the control group [(18.10 ±2.53)mm3](P<0.05). Conclusion The learning and memory ability has no significant changes in in-fantile rats after neonatal interrupted and repeated sevoflurane inhalation and MRI examination of hippocampal volume is not sufficient for the diagnosis of cognitive dysfunction.

BACKGROUND:Whether continuous passive motion improves osteoarthritis by enhancing the proliferation ability of chondrocytes is rarely reported.
OBJECTIVE:To analyze the therapeutic outcomes of continuous passive motion in rabbits with osteoarthritis and the underlying mechanism.
METHODS:Thirty-six New Zealand white rabbits were randomly al otted into three groups (n=12 per group). Rabbits in control group only underwent capsulotomy with no harm to the cartilage;osteoarthritis models were established in the rabbits of model and treatment groups using Hulth method. At 1 day after modeling, the treatment group rabbits were treated with continuous passive motion, 8 hours daily for consecutive 8 weeks. Interleukin-1 and tumor necrosis factorαlevels in the synovial fluid were detected by ELISA;col agen type II expression and the proliferation ability of chondrocytes were detected by MTT assay;Erk signaling pathway activation was determined using western blot assay.
RESULTS AND CONCLUSION:In the model group, interleukin-1 and tumor necrosis factorαlevels in the synovial fluid were significantly increased, and the expression level of col agen type II mRNA was remarkablely down-regulated. Continuous passive motion significantly downregulated interleukin-1 and tumor necrosis factorαlevels and up-regulated the col agen type II mRNA level (P<0.01). The model group showed significantly decreased proliferation ability of chondrocytes and down-regulated Erk signaling pathway activation, while after continuous passive motion, al above indicators were significantly improved (P<0.01). These results indicate that the continuous passive motion can al eviate osteoarthritis probably by influencing interleukin-1 and tumor necrosis factorαlevels, proliferation ability of chondrocytes, and col agen type II expression, as wel as regulating Erk signaling pathway activation.

Objective:To optimize the macroporous resin separation process for total flavonoids in papaya. Methods:The content of total flavonoids in papaya was selected as the index, and the resin model, sample solution concentration, ratio of diameter and height, the flow rate of adsorption, type and volume of eluent, type and volume of impurity removing solvent, elution velocity and the other parameters were investigated. Results:The optimal purification process was as follows: the macroporous resin type was D-140, the sample solution concentration was 0. 1 g·ml-1 , the sample volume was 2BV, the ratio of diameter and height was 1∶9, washing the impurities with 3BV water, eluting with 3BV 10% ethanol first followed by 3BV 50% ethanol with 2BV·h-1 , and collecting 50%ethanol elution. The total flavonoids content was 52%. Conclusion:The optimized process can separate and purify the total flavonoids in papaya effectively.

Purpose　The aim is to immobilize the thrombin and to increase the stability of immobilized enzyme.Methods　Thrombin was immobilized on chitosan and crosslinked with glutaraldehyde, and the optimum conditions for immobilization and stability of immobilized enzyme were studied.Results　This preparation of immobilized thrombin was practicable,and the stability of this immobilized enzyme was obviously improved than that of thrombin.Conclution　The conditions for immobilization were good, and reliable.Stability of immobilized thrombin to light, high temperature,low temperature and observation on reserving at room temperature was good.

BACKGROUND:The auditory ossicle chain reconstruction is stil an important method to treat conductive deafness. Although a great variety of materials have been applied, the blood supply of otosteon after the implantation is ignored. Moreover, there is no real bone formed.
OBJECTIVE:To observe the angiogenesis of vascular endothelial growth factor and col agen I modifiedβ-tricalcium phosphate porous scaffold which is implanted into the otocyst of guinea pig.
METHODS:Total y 60 guinea pigs were randomly divided into experimental group (vascular endothelial growth factor and col agen I modifiedβ-tricalcium phosphate porous scaffold), col agen I control group (col agen I modifiedβ-tricalcium phosphate porous scaffold) and blank control group (β-tricalcium phosphate porous scaffold). The guinea pigs were executed under anesthesia at weeks 1, 2, 3, 4 respectively. The surface of scaffolds was observed by scanning electron microscopy. The angiogenesis of scaffolds were observed by hematoxylin-eosin staining and CD34 immunohistochemistry staining, and then the microvascular density was counted. The osteogenesis of the scaffolds was observed by toluidine blue staining.
RESULTS AND CONCLUSION:Endothelial cel proliferation and lumen formation could be observed after 1 week in the experimental group, and the angiogenesis reach the peak after 3 weeks with traffic branches formedbetween micropores. In the other two groups, the lumen formed at 2 weeks but no traffic branches were visible. The sprouting of new blood vessels in the pores were observed more in the experimental group than the other two groups (P<0.05). The adherence and proliferation of cel s could be examined in the surface and pores of the scaffold by scanning electron microscope. After 4 weeks, the osteogenesis could be observed by toluidine blue staining, especial y in the experimental group. These findings suggest that the vascular endothelial growth factor and col agen I modifiedβ-tricalcium phosphate porous scaffold can realize an effective vascularization in the environment of guinea pigs’ middle ear. What’s more, the scaffold also can promote bone formation.

Objective To investigate changes of brainstem auditory evoked potential (BAEP)and somatosensory evoked potential (SEP) in patients with acute cerebral infarction,and discuss their relation with prognosis of the patients.Methods The study involved 60 patients with acute cerebral infarction.Changes of BAEP and SEP in each patient were detected and recorded continuously.Prognosis evaluation was performed by using GCS.Another 60 age-matched and gender-matched healthy human beings were enrolled as controls.Results Incubation period of BAEP wave Ⅰ had no significant difference between the cerebral infarction and control groups (P ＞ 0.05).However,interspike intervals of other BAEP waves in cerebral infarction group were different from those in control group (P ＜ 0.05).A series of waves of SEP (P14-N60) were all significantly prolonged in cerebral infarction group (P ＜0.05).Conclusion BAEP and SEP can effectively reflect function of brain stem in patients with acute cerebral infarction and have some values in determining their prognosis.