Carotid stenosis is one of the important risk factors for cerebrovascular disease.Many studies have shown that carotid stenosis may cause cognitive impairment,but the specific mechanisms remain unclear.Carotid endarterectomy and stenting can relieve carotid stenosis,improve cerebral perfusion,and may improve the cognitive function of patients,but the complications and long-term efficacy after intervention remain to be further studied.

Objective To maintain the good psychological state of new nurses, stabilize nursing troop and improve nursing quality, we investigate the work pressure source and mental health of new nurses and analyze the correlation among work pressure, mental resilience and mental health. Methods According to the principle of convenience sampling,a total of 116 new nurses who get the job less than one year in the first hospital of Jilin university were investigated using the method of questionnaire survey. The Conner Davidson Resilience Scale (CD-RISC), Self-rating Anxiety Scale (SAS) and Self-rating Depression Scale (SDS) were involved in the questionnaire. Results Mental resilience scores of new nurses were (63.73±15.11), the scores of anxiety and depression were (34.49±6.45) and (35.59±7.24). Work pressure was negatively correlated with mental resilience (P<0.01) and positively correlated with anxiety and depression (P<0.01). New nurses worried about making mistakes in the work accounted for 89.42 percents (93/104), which was the highest score in the stress source. Conclusions New nurses have good mental resilience and psychological health level, but work pressure has certain impact on mental resilience and mental health. Hospital managers should take active measures which include reducing pressure and improving the ability to help the new nurses through the adaptation as soon as possible.

AIM: To observe the effect of Jiawei sinisan (JWSNS) on some amino acids in hippocampus of rats with chronic stress. METHODS: Wistar rats were randomly divided into 3 groups: control, model and JWSNS group. OPA (HPLC) was adopted to detect the contents of amino acids in hippocampus. RESULTS: The contents of Glu and Asp in hippocampus of model group increased significantly ( P

Objective To determine the main components of SZ herbal disinfectant and to observe its inactivation efficiency on microorganism in suspension. Methods The spectrophotometer examination, neutralizer screening trial, bacteria count trial, phage plaque count trial and cells infection test had been used to determine contents of ursolic acid in SZ herbal disinfectant and the disinfection efficacy. Results The ursolic acid contents in original SZ disinfectant reached 436.43 ?g/ml and decreased by 8.07% after a year of deposit. Treated by disinfectant for 5 min and 1∶5 dilution solution for 10 min, the Staphylococcus aureus (SA) and Escherichia coli (EC) in suspension could be killed with the efficiency of 100%. Treated with SZ disinfectant and the dilution solution (1∶50) respectively, the Candida albicans could be killed with the efficiency of 90.97% and 51.10%. Treated with the dilution solution for 3 min, the f2 bacteriophage and PV could be reduced by 100% and 9.00 log. Conclusion With the main component of ursolic acid, the SZ herbal disinfectant is a kind of natural disinfectant. It has a satisfactory inactivation efficacy on bacterial vegetative form and virus.

Objective To investigate the correhtion between cognitive impairment and cerebral atherosclerosis in patients with acute ischemic stroke.Methods Acute ischemic stroke patients without cognitive impairment were recruited before symptom onset.The Montreal cognitive assessment (MoCA) was used to evaluate the cognitive function.Magnetic resonance imaging (MRI) was used to identify the infarct locations and sides.Magnetic resonance angiography,CT angiography and digital subtraction angiography were used to identify atherosclerotic arteries.Resul~ A total of 101 patients with acute ischemic stroke were enrolled,including 75 (74.3％) with cognitive impairment.The proportions of age (54.54 ± 12.59 years vs.64.43 ± 10.37 years;t =-3.960,P ＜0.001),years of education ≤6 years (50.7％ vs.11.5％;x2 =12.257,P ＜ 0.001),and cerebral atherosclerosis (89.3％ vs.50.0％;x2 =18.137,P ＜0.001) of the cognitive impairment group were significantly higher than those of the normal cognitive function group.Multivariate logistic regression analysis showed that cerebral atherosclerosis was an independent risk factor for cognitive impairment in patients with acute ischemic stroke (odds ratio 1.720,95％ confidence interval 1.005-2.942;P=0.048).MoCA score was negatively correlated with the offending vessels (r=-0.365,P＜ 0.001) and the most severe vessels of atherosclerotic degree (r=-0.243,P =0.014).Conclusions Most patients with acute ischemic stroke had cognitive impairment in the early stage after onset,and the MoCA scores was negatively correlated with the degree of cerebral atherosclerosis.Cerebral atherosclerosis was an independent risk factor for cognitive impairment in patientswith acute ischemic stroke.

AIM:To construct a prokaryotic expression system of staphylococcal enterotoxin A(SEA)gene and determine the effects of the recombinant expression product rSEA in promoting lymphocyte proliferation and inhibiting tumor cell growth.METHODS:PCR was used to amplify entire SEA gene of S.aureus strain ATCC13565.The cloned SEA gene was sequenced after T-A cloning.SDS-PAGE was applied to measure the output of rSEA expressed by pET32a-SEA-E.coli BL21DE3.Ni-NTA affinity chromatography was performed to extract rSEA.Cytotoxicity of rSEA to Vero cells was detected using TCID_ 50 titration method and then the value of TCIC_ 50 was determined.MTT colorimetry was established to examine the effects of rSEA at different dosages on proliferation of mouse splenocytes and human peripheral blood mononuclear cells(PBMC)as well as on growth of HepG2 cells and HeLa cells in vitro.RESULTS:In comparison with the published corresponding sequences,similarities of the nucleotide and putative amino acid sequences of the cloned SEA gene were 100%.The output of rSEA was approximate 25% of the total bacterial proteins.rSEA had a cytotoxicity with TCIC_ 50 of 3.14 ?g to Vero cells.1.0-20.0 mg/L rSEA showed the significant effects of promoting proliferation of mouse splenocytes and human PBMC(P

Objective To investigate the treatment and nursing of patients with pulmonary embolism after ovarian cancer combined with common variant immunoglobulin deficiency. Methods The clinical data of 1 case of acute pulmonary embolism after operation in a patient with ovarian cancer merger immunoglobulin defects were analyzed retrospectively. Results After the rescue patients, close observation of vital signs change, according to nursing bleeding and thrombosis, strengthen psychological support and other measures. The patient was discharged after 56 days of treatment and care. Conclusions The early detection of acute pulmonary embolism, timely diagnosis and treatment, close observation of vital signs, the nursing care of bleeding and thrombosis, in order to improve the success rate of treatment of acute pulmonary embolism.

Objective To construct the multiple antigenic peptide (MAP) gene and E. coli ex-pression system, based on the out membrane protein OmpL1, LipL21 and LipL32 from Leptospira interro-gans, and better understanding of the immunological activity of the recombinant protein. Methods Using MI3KE display and Western blot, the advantage epitopes of OmpL1, LipL21 and LipL32 were identified and used to synthesize a new gene, then its prokaryotic expression system was constructed. The expression of re-combinant protein was determined by SDS-PAGE. The immunity activity of the recombinant protein was iden-tified by Western blot and ELISA. Results The synthetic gene was effectively expressed in E. coli and mainly presented in soluble form. The expression protein could react with the antileptospirosis antibodies in rabbit and human sera, which contained different serogroups. Conclusion The recombinant MAP gene of leptospires was successfully constructedand and expressed in E. coli. The recombinant protein had a good immune activity, and could cross-reacted with antileptospirosis antibodies from different serogroups.

AIM: To observe the effect of Jiawei Sini Decoction (JWSND) on glucocorticoid receptor (GCR) in thymocytes of chronic psychological stress rats. METHODS: The rats were randomly divided into 4 groups, control group (C), model group (M), group treated by JWSND (C 1), group treated by ginsenosides (C 2). The number of thymocyte GCR sites and the GCR nuclear thanslocation rate were detected by radioimmunoassay. RESULTS: Compared with the control group, in the model group, the thymocyte weight index lowered significantly ( P

BACKGROUND: When one is in a stress state, some amino acids as neurotransmitter in his brain are of important regulating action to his cerebral functions and his psychic behaviors,and some traditional Chinese drugs can regulate the stress state of the body.OBJECTIVE:To observe the content changes of glutamic acid,aspartic acid, γ-aminobutyric acid and taurine in the hypothalamus and hippocampus of rats under repeatedly psychic stress so as to investigate the effects of tiaogan recipe, jianpi recipe, bushen recipe and ginsenoside on them.DESIGN: A randomized grouping and controlled observation trial.SETTING:Department of Basic Theory of Traditional Chinese Medicine(TCM) of Basic Medical Science College, Guangzhou University of TCM.MATERIALS:The experiment was completed from March 2002 to January 2003 at the Animal Center of Guangzhou University of TCM.Totally60 Wistar rats were randomly divided into 6 groups: normal, model, tiaogan, bushen, jianpi and ginsenoside groups, with 10 in each group. Compositions and doses of tiaogan recipe: radix bupleuri 5 g, fruetus gardeniae 5 g,radix paeoniae alba 15 g,fructus lycii 15 g,fructus aurantii 6 g,radix rehmanniae 18 g, concha haliotidis 30 g. Compositions and doses of shenqi pill: radix rehmanniae 30 g, rhizoma dioscoreae 15 g, fructus corni 15 g,rhizoma alismatis 10 g,poria 10 g,cortex moutan radicis 10 g,ramulus cinnamomi 4 g, radix aconiti praeparata 4 g. Compositions and doses of sijunzi decoction:radix codonopsis pilosulae 20 g,rhizoma atractylodis macrocephalae 15 g, poria 15 g, radix glycyrrhizae preparata 6 g.METHODS:① The traditional Chinese medicines were conventionally decocted; and the tiaogan recipe condensed to the liquid containing1.69 g/mL crude drug, shenqi pill containing 1.76 g/mL crude drug,sijunzi decoction containing 1.01 g/mL crude drug.Ginsenoside was prepared as 7 g/L water solution.The rats in the normal and model groups were by gavage given 2 mL of 9.0 g/L sodium chloride injection.The rats in the tiaogan, bushen, jianpi and ginsenoside groups were respectively by gavage given 2 mL of tiaogan recipe, shenqi pill, sijunzi decoction and ginsenoside solution 1 hour before immobilization stress. ② Except for rats in the normal group, those in the rest groups were all conducted for establishment of psychic stress reaction model.The rats were put into an immobilization tube,their action space was gradually reduced by using a mobile insertion piece,they were regulated to a nervous state without prpduction of intense revolting, which was done once a day, starting with 4 hours immobilization on the first day, and later on increased by 30-60 minutes per day, for consecutive 14 days. ③ The whole brain of the rats in each group was collected by decapitation,OPA high-performance liquid chromatography was used for assays of the contents of glutamic acid, aspartic acid, γaminobutyric acid and taurine in hypothalamus and hippocampus of the rats.MAIN OUTCOME MEASURES: The content changes of glutamic acid,aspartic acid,γ-aminobutyric acid and tanrine in the hypothalamus and hippocampus of rats in each group.RESULTS: Totally 60 rats involved all entered into the result analysis. ①The content changes of glutamic acid in the hypothalamus and hippocampus of rats in each group:Compared with normal group,the contents of glutamic acid in hypothalamus of rats in the tiaogan, jianpi,bushen and ginsenoside groups were markedly decreased [(21.85±8.19), (15.76±1.80),(14.68±7.91), (21.46±5.45), (13.43±7.68) μmoL/g]; compared with model group,the contents in the tiaogan, bushen, jianpi and ginsenoside groups were obviously raised [(11.04±3.65), (11.78±2.17), (18.67±2.98), (20.91 ±3.96),(17.71±1.83) μ moL/g, P ＜ 0.05, P ＜ 0.01, P ＜ 0.01, P ＜ 0.05]. ② The content changes of aspartic acid in the hypothalamus and hippocampus of rats in each group:Compared with model group,the contents of aspartic acid in the hypothalamus in the jianpi and ginsenoside groups were obviously decreased [(8.65±1.18), (5.72±1.32), (4.67±1.88) μmoL/g, P ＜ 0.01,P ＜ 0.01], while the contents in the hippocampus of rats in the jianpi,bushen and ginsenoside groups were markedly raised[(2.58 ±0.87),(3.93±0.49), (4.52±0.98), (3.83±0.41) μmoL/g, P ＜ 0.01, P ＜ 0.01, P ＜ 0.05].③ The content changes of γ-aminobutyric acid in the hypothalamus and hippocampus of rats in each group:Compared with model group,the contents of γ-aminobutyric acid in the hypothalamus of rats in the tiaogan,jianpi,bushen and ginsenoside groups were markedly decreased[(20.92±4.96), (15.87±2.90), (13.84±2.63), (14.94±3.98), (10.94±3.68) μ moL/g,P ＜ 0.05, P ＜ 0.05, P ＜ 0.01, P ＜ 0.01], while the contents in the hypothalamus were obviously raised [(4.12±1.66), (4.18±1.04), (6.67±1.29),(6.11±0.99), (6.37±0.78) μmoL/g, P＜ 0.05, P＜ 0.01, P＜ 0.01, P＜ 0.01].④ The content changes of taurine in the hypothalamus and hippocampus of rats in each group: Compared with model group, the contents of taurine in the hypothalamus of rats in the tiaogan, jianpi, bushen and ginsenoside groups were markedly decreased [(10.24±1.72), (7.82±1.14), (8.00±2.05),(6.42±3.17) μmoL/g, P ＜ 0.05, P ＜ 0.05, P ＜ 0.01], while the contents in the hippocampus in the jianpi and ginsenoside groups were obviously raised [(12.61±3.51), (17.03±2.74), (18.04±2.14) μnoL/g, P＜ 0.01, P＜ 0.01].CONCLUSION:The central acting site of tiaogan recipe may mainly be in the hypothalamus,possibly being related with down-regulating amino acids.While the central acting sites ofjianpi recipe,bushen recipe and ginsenoside may include the hippocampus and hypothalamus, being mainly related with up-regulating amino acids,through enhancing the integration of the hippocampus on stress so as to gain the effect of anti-injury of stress.