Objective To establish an in vitro oxygen-glucose deprivation/reoxygenation axon injury model in rat hippocampal neurons in order to found a basis for research concerning the injury of oxygen glucose deprivation and axons regeneration. MethodsThe hippocampal neurons isolated from rats 24 h after born and cultured for 7 d were exposed to D-hanks solution with nitrogen gas instead of the original culture medium for 0.5, 1.0 and 1.5 h respectively, and then continue to be cultured in the original culture medium with oxygen. LDH content in the culture media was measured at 1, 5, 24, 48 and 72 h after reoxygenation. The morphological changes of neuron and axon were observed with inverted phase contrast microscopy. ResultsAfter oxygen-glucose deprivation/reoxygenation injury, hippocampal neurons became darker, swollen, and were with shorten axons. With the elapse of time, the LDH content was increased. The survival rate of hippocampal neurons was higher and the change of axon length was more obvious in the group of oxygen-glucose deprivation for 0.5 h than in the other groups. ConclusionAn in vitro oxygen-glucose deprivation/reoxygenation axon injury model in rat hippocampal neurons is successfully established.

Objective To investigate the clinical typing and staging in diagnosis of Severe Acute Respiratory Syndrome (SARS). Methods Retrospective study was designed to analysis the principal clinical characteristic of SARS and the standard of clinical typing and staging was raised. Comparisons with X-ray in lung, change of lymphocyte subset, PaO_2, SaO_2,and prognosis of disease were performed. Results The standard of SARS clinical typing and staging is four types (light type, ordinary type, heavy type, serious type)and four phases (prodromal period, progres phase, fastigium, recovery phase). The light type is 8/162(4.9%), ordinary type is 69/162 (42.6%), heavy type is 41/162 (25.3%), serious type is (27.2%). Comparisons SARS clinical typing and staging with X-ray in lung, change of lymphocyte subset were found that the more lesion in lung, the lower lymphocyte and its subset, and more serious in clinical typing. Conclusions The standard of clinical typing and staging summarized basic clinical characteristic in SARS, and coincided with progress of SARS. The standard will be help of clinical diagnosis, treatment and judging the prognosis of SARS.

Objective To discuss the relationship between disease progress with the change of cell im munological function as well as the effect of immunological function in severe a cute respiratory syndrome. Methods Retrospective study was designed to analyze the relationship of disease progres s with the change of immunological function. According to the disease outcomes, the patients are divided into two groups: died group and survival group. The dif feren ce of immunological function in groups was performed statistics analysis. Results Immunological function (CD3 +, CD4 +, CD8 +) descended to the lowest level in period of fastigium in SARS patient, and then recovery quickly. Comparison of died grou p and survival group was found that Immunological function (CD3 +T, CD4 +T, CD 8 +T) were lower in period of fastigium and recovery in died group than in survival g roup(P

Objective To observe the effects of dual antiplatelet therapy at different time after cervical artery stenting and to investigate the reasonable time for dual antiplatelet therapy. Methods Sixty-six patients with symptomatic cervical artery artery stenosis ＞50% or asymptomatic stenosis ＞70% performed stenting under local anesthesia. They were randomly allocated into dual antiplatelet therapy (aspirin + clopidogrel) for 1 month and for 3-month groups after procedure, and then they began to take aspirin for a long time. The complications, vascular events, and the incidence of restenosis were observed respectively. Results There were no vascular events and death in both groups from 6 to 36 months after procedure. There was no significant difference in the incidence of complication and restenosis (9% vs. 6%, P = 0. 642). Conclusions There was no significant difference in the efficacy of aspirin + clopidogrel treatment after cervical artery stenting between 1 month and 3 months. One month dual antiplatelet therapy may be appropriate, but large-scale randomized controlled trials are needed to confirm it.

Objective To investigate if the relative ratio between C1q and C3a, C5a had a relationship with the extent of coronary artery disease ( CAD) which had never been evaluated in humans.Methods Fifty-three patients scheduled for elective percutaneous coronary intervention ( PCI ) from February, 2016 to April, 2016 at Fuwai hospital were prospectively enrolled.According to the clinical and angiographic characters patients were divided into two groups:acute coronary syndrome ( ACS) group ( n=24), and control group (n=29, 19 patients with stable angina and 10 patients without CAD confirmed by angiography).In all individuals, fasting venous blood was collected by EDTA tubes after admission and strictly before PCI.The plasma level of C1q was measured by immune turbidimetric analysis, C3a and C5a were measured by ELISA tests.Differences between groups were assessed using t test, Mann-Whitney Utests, chi-squared test or Fisher exact test depending on the type of data respectively.Multivariate logistic regression analyses were conducted to evaluate the adjusted effect of C1q, C3a, C5a, C1q/C3a and C1q/C5a on ACS.Results Compared with control group, ACS group has an elevated circulation level of C3a (4 531.14 μg/L vs.4 179.95 μg/L, t=1.381,P=0.173) and C5a (6.44 μg/L vs.4.42 μg/L, t=0.133, P=0.108) but a decreased level of C1q (176.98 μg/ml vs.200.60 μg/ml, t=-2.022, P=0.048).The relative ratio of C1q/C3a was significantly decreased in ACS patients(4.05 ×10 -2 vs.4.97 × 10 -2 , t=-2.484, P=0.016).According to the multiple logistic regression analysis, lower relative ratio of C1q/C3a level proved to be independently associated with ACS ( OR=0.937, P=0.047, 95% CI:0.879-0.998).Conclusions The decreased relative ratio of C1q/C3a level proved to be independently associated with ACS.C1q/C3a ratio could be used as an important index reflecting the complement system homeostasis status which might have potential clinical value in evaluating the prognosis of patients with CAD.

Objective:To establish the method validation of microbial limit tests for hospital paste preparations, including com-pound salicylic acid paste, zinc oxide paste and compound pine tar paste. Methods:According to the microbial limit test described in China pharmacopoeia 2010 edition, the method validation of count of bacteria, fungi and yeasts and tests for specified microorganisms was established. Results:Medium dilution method could be used in bacteria, fungi and yeasts count and specified microorganisms ex-amination for compound salicylic acid paste and zinc oxide paste. For compound pine tar paste, bacteria, fungi and yeasts count and the pseudomonas aeruginosa examination could use medium dilution method, while the staphylococcus aureus examination should employ membrane filtration method. Conclusion:The methods of microbial limit tests for the three hospital paste preparations are established, which can be used to control the quality of hospital preparations effectively.

Objective To evaluate the performance of self‐established angiotensin converting enzyme (ACE) detection system . Methods The performance evaluation of ACE reagent kit produced by the Jiuqiang Company including precision ,linearity ,correla‐tion with the reference reagent and reportable range were conducted by using the automatic biochemical analyzer according to the re‐quirements of the EP5‐A2 and EP9‐A documentation in the Clinical and Laboratory Standards Institute (CLSI) .Results Intra‐as‐say CV of the system were 6 .87% ,2 .39% and inter‐assay CV were 6 .09% ,1 .81% ,respectively .During the day CV were 8 .00 %and 2 .8% respectively ,which were less than those provided by the manufacturer (<10% );the lenearity result was R2 =0 .99 .The correlation coefficient (r) of the system comparing with the reference reagent was 0 .990 56 ,moreover the average bias was 8 .55% , showing good correlation ;the repotable range was 9 .0U/L‐600U/L .Conclusion Self‐established ACE detection system can meet the requirements for clinical application .

Recently,thesituationofchemicalsubstancesillegallyaddedinTCMandhealthproductsismoreandmorecomplex and subtle, which not only results in latent danger and harm to customers, but also induce supervision difficulty and challenge for su-pervision departments. The variety and composition of chemical substances added illegally, analytical methods and relative state laws and regulations were illustrated in detail in the paper, which can provide the basis for the rational and safe use of TCM and health prod-ucts, and provide the reference and technology support for the supervision departments.

Objective:To compare the mental health between the urban mothers and rural mothers of children with cleft lip and pal-ate.Methods:1 68 mothers(including 1 24 rural and 44 urban)of the children with cleft lip and palate were included in the trial group and 82 mothers of normal children were included in the control group.The subjects were tested by the self-assessment symptom lists of SCL-90 for the evaluation and comparison of mental health.Results:The scores of nine dimensions of trial group in somatization, forcing symptoms,depression,anxiety,etc were significantly higher than those of the control group(P <0.05).The scores of nine di-mensions of rural group in somatization,forcing symptoms,depression,anxiety,etc were higher than those of the urban group,the ri-val,psychotic and total scores showed significant differences(P <0.05);Conclusion:The mental health status of mothers of children with cleft lip and palate is poorer than that of those of normal children.That of the rural mothers is poorer than that of the urban ones. Special attention should be paid to the mental health status of the parents of children with cleft lip and palate.

Objective To observe the effect of ischemic postconditioning on neuron structure plasticity and memory after global cerebral ischemia injury in rats and discuss the protection mechanism from aspect of Morphology. Methods A total of 36 SD male rats were randomly divided into sham operation group, global cerebral ischemia for 15 min group and global cerebral ischemia plus postconditioning group, 12 rats per group. The pullsinelli 4 vessel occlusion was applied to produce the models of global cerebral ischemia reperfusion injury, common carotid arteries (CCA) occlusion with 15 min and postconditioning with three cycles, of 15 sec release and 15 sec occlusion (15s/15s). Six rats from each group were evaluated by Morris Maze test for the ability of space learning and memory and the other six rats were evaluated by golgi stain for morphologic change of neuron. Results The ischemic postcondtioning group showed significant shorter mean escape latency compared with the sham operated group ( at day 3, P =0. 014; at day 4, P =0.040; at day 5, P =0.001 ). The density of dendritic spine in ischemic postcondtioning group was increased more significantly compared with ischemic group ( F = 562. 820,P ＜ 0. 01 ). Conclusion Ischemic postconditioning has obvious protective effect on cerebral ischemiainduced memory impairment, which may be related to alleviation of dendritic spine injury.