The distribution of afferent terminals from VL nucleus to cruciate cortex was studied by using nerve fibers degeneration and electron microscopic technigues. Cortical area 4 could be further divided into three subdivisions according to their geographical relations to the eruciate sulcus: an anterior, a posterior and a lateral zone, respectively. It was demonstrated that the degenerating axon terminals were mainly distributed in anterior and lateral zones. Much less terminals were observed in the posterior zone. Totally 112 terminals were observed in the anterior zone. Among them, 78.6％ were seen in layer Ⅲ, 19.6％ in layer Ⅰ, 1.8％ in layer Ⅴ. Of the 112 terminals found in the lateral zone, 62.5％ were distributed in layer Ⅲ, 31.2％ in layer Ⅰ and 6.3％ in layer Ⅴ. On the other hand, only 33 degenerating terminals were found in posterior zone. their distributions were: 51.6％ in layer Ⅰ, 42.4％ in layer Ⅲ and 6.0％ in layer V. Approximately 75％ of the degenerating axon terminals examined in these three zones made synaptie contacts with dendritic spines, and 25％ with dendritic shafts. The vast majority of these synapses could be classified as asymmetrical type synapse.In area 6, most of the degenerating terminals were encountered in layer Ⅰ and Ⅲ. All of them formed asymmetrical type synapses with dendritic spines. No degenerating terminals could be found in area 3a.

Synaptic connections of commissural axon terminals from contralateral motor cortex have been studied by using anterograde degeneration and electron microscopy in the cortical area 4? of cat. The results showed that most of the commissural terminals display electron-dense type degeneration, and 92 degenerating terminals were identified in area 4?. The number of terminals in layer Ⅰ was nearly equal to layer Ⅲ. In layer Ⅲ, an asymmetrical synapse formed between a degenerating terminal and the soma of a bipolar cell was observed. In layers Ⅴ-Ⅵ, no degenerating terminal could be found. Among the total degenerating terminals, 77.2% were found to make synapses with dendritic spines, 21.7% made synapses with dendritic shafts and 1.1% with soma, and all of these synapses were of the assymmetrical type.

OBJECTIVE:To evaluate the effectiveness of Corbrin capsules for respiratory systemdisease systematically,in or-der to provide evidence-based reference for clinical use. METHODS:Retrieved from CJFD,China Dissertation Database,Wanfang database,VIP,Cochrane Library,Medline and PubMed,randomized controlled trials(RCTs)about conventional treatment plan(trial group)vs. single treatment plan(control group)in the treatment of respiratory system disease. The quality of included studies were evaluated after extracting data and modifying according to Jadad scale and Cochrane bias risk assessment scale. Meta-analysis was performed by using RevMan 5.2 statistical software. RESULTS:A total of 17 RCTs were included,involving 1801 patients. The re-sults of Meta-analysis showed that response rate [RD=0.15,95%CI(0.10,0.19),P<0.001],FEV1[MD=0.21,95%CI(0.14,0.28), P<0.001],FVC [MD=0.26,95%CI(0.05,0.47),P<0.001] and FEV1/FEV [MD=5.60,95%CI(3.42,7.78),P<0.001] of trial group were significantly higher than those of control group,with statistical significance. CONCLUSIONS:Corbrin capsules have good therapeutic efficacy for respiratory system disease and effectively improve lung related indicators.

In recent years, the importance of tyrosine phosphorylation in the nervous system of mammalian is gaining recognition. Tyros ine protein kinases exert important modulatory effect on the proliferation, diff erentiation, migration and metabolism-related singal transduction pathways in c ells. In this paper we reviewed the signal cascade process of three different ty rosine protein kinase families, including Trk, Src and Eph tyrosine protein kina se families. Furthermore, we discussed important role and possible mechanisms of these tyrosine protein kinases on the neuron synapse plasticity and learning an d memory process.

AIM To evaluate bioavailability, biocompa- tibility and biodegradability of an injectable microsphere sustained release preparation of naltrexone(NTX) in 4 dogs. METHODS Pharmacokinetic data of NTX and remained NTX in microspheres in injection site were studied using high performance liquid chromatography(HPLC)-electrochemical detection with naloxone(NLX) as internal standard. Biocompatibility of the microspheres was assayed by histological examination. RESULTSPharmacokinetics of NTX after an intramuscular dose of 0.5 or 1.0 mg*kg-1 NTX indicated a plasma clearance range of 0.66 to 0.73 L*min-1 and a t1/2β range of 60.0 to 67.2 min. After a 1-week washout period without medication, NTX microspheres injection period about 4 weeks followed. After injection of 1.0 g of microspheres containing (296.5±2.1)mg of NTX, mean blood concentrations of NTX exceeded 1 μg*L-1 for 26-28 d, and cmax per dose (mg*kg-1) was only 1% of that after NTX dosing. It was estimated that approximately (93.0±4.1)% of the administered dose was absorbed after microspheres injection in 4 dogs. There were no serious adverse effects other than light tissue irritation. CONCLUSIONThis NTX microspheres preparation provides a safe, complete and sustained release of the drug for about one month.

Human rhinoviruses (HRVs) are the causative pathogens in more than half of viral upper respiratory tract infections. Currently, no antiviral agents that are active against HRVs are available for clinical use. Because only higher primates are susceptible to HRVs, the screening of new drug is most commonly based on the cell line model. In this study, isolated rabbit airway smooth muscles (ASM) tissue model has been established, and the airway responsiveness with different treatment has been examined. Relative to control tissues, the maximal constrictor (Tmax) response to ACh increased significantly 150% in ASM inoculated with HRV, and relaxation to isoproterenol has been attenuated to 63%. And the abnormal responsiveness can be inhibited in presence of pretreatment with several new compounds which have been exhibited effective anti-HRV activity on cell lines. The results demonstrate that the established ASM model will be applied to screening the anti-HRVs drugs.

0.05),but these positive rates were notable decreased comparing with nPCR and immunohistochemistry techniques(P

Objective To investigate the relationsheep between colonic H2 S‐producing enzyme cystathionine‐γ‐lyase(CSE) and colonic motility in a rat model of diabetes mellitus(DM) .Methods To obtained diabetic rat models ,all rats were injected intra‐peritoneally (ip) 1% streptozotocin (STZ ,65 mg/kg) ,type 1 diabetes model was established ,nornmol conditions were observed pe‐riodically .Ten days after treatment ,production of colonic longitudinal smooth muscle strips ,organ bath recordings were used to test the colonic motility ;immunofluorescence and double immunofluorescence lableling method were performed to detect the distribution of CSE;Western blot were performed on rat colonic samples devoid of mucosa and submucosa to detect the expression of CSE .Re‐sults DM rats decreased the colonic motility(P<0 .05);CSE was strongly expressed in the cytosols of the circular and longitudinal smooth muscle cells and the nucleus of the myenteric plexus neurons ;CSE distributed in myenteric neurons in the nucleus of rat ,but the proportion of MP had no difference (P>0 .05);DM rats increased the expression of CSE in the colon devoid of mucosa and sub‐mucosa(P<0 .05) .Conclusion The decrease of colonic motility in diabetic rat may be associated with the increased production of H2 S‐producing enzyme CSE .

Aim To investage the effects of ?、?、?-receptor on hyperlocomotor and analgesia in mice.Methods Locomotor activity experiment and hot-plate pain experiment were measured.Results Oxycodone dose-dependently enhanced locomotor response in mice.Naloxone,a unselective opioid receptor antagonists and naltrindole(?-selective opioid receptor antagonist)could attenuate the increase of locomotor acitivity induced by oxycodone,but naloxonazine,a ?-receptor antagonist had no such effect.?-receptor antagonist nor-Binltorphimine increased hyperlocomotion induced by oxycodone.In antinociceptive experiment,naloxonazine and naltrindole could not attenuate the that of oxycodone,but nor-Binaltorphimine could attenuate the antinociceptive effects of oxycodone.Conclusion Oxycodone-hyperlocomotor is probably mediated by ? opioid receptor,and antinocieptive effects of oxycodone is probably mediated by ? opioid receptor.

OBJECTIVE: To discuss the application of E-commerce system in Hospital drug management. METHODS: It analyzed the defects existed in current Hospital Information System (HIS), introduced hospital E-commerce system and evaluated comparatively the drug management information before and after the application of the e-commerce system. RESULTS & CONCLUSIONS: E-commerce system has effectively made up the functional insufficiency of HIS and changed the traditional drug purchase mode; therefore, its application has a bright future.