We applied a new teaching mode,combining problem-based learning (PBL) with extended teaching in clinical internship and case discussion,in order to adapt to the new situation in infectious diseases.The teaching efficacy was evaluated by questionnaire and classroom effect.The results showed that the new mode cultivated the students' self-learning ability and broadened their professional perspective.

Tumor genesis and development often result from deregulation of important biological pathways at the gene expression level. Although there has been much work focused on searching gene sets using gene expression data or other prior information, proper statistical testing of the gene sets is still an open question. Most studies have expanded the testing method of a single gene into the gene sets. Parametric statistical analysis of gene sets ( p-SAGE ) was presented for determining the significant gene sets or pathways associated with a phenotype of interest. The method was applied to brain tumor experiments to identify many gene sets. Some of the newly discovered gene sets were related to signal transduction and immunity. This simple and effective method gives useful biologically meaningful results.

Objective To systematically evaluate the effectiveness and safety of glucoside tripterygium total (GTT) combined with antihistamine medicine for chronic idiopathic urticaria (CIU). Methods All randomized or semi-randomized controlled trials (RCTs or semi-RCTs) of GTT in treating CIU were collected from CNKI, VIP, WanFang Data, CBM, Embase, PubMed and Cochrane Library clinical controlled trials database. After two researchers conducted screening and data extraction independently, the quality of the included literature research was evaluated according to the risk of bias tool described in the Cochrane Handbook version 5.1.0, and then RevMan 5.3 was used to undertake Meta analysis. Results A total of 21 articles about RCTs and semi-RCTs were obtained, including 2194 patients. Meta analysis indicated that GTT combined with antihistamine medicine treatment showed higher effective rates compared with the control group [RR=1.33, 95%CI (1.26, 1.40), P<0.000 01], with obviously lower recurrence rate [RR=0.45, 95%CI (0.33, 0.62), P<0.000 01]. There was no statistical significance in adverse reactions. Conclusion GTT combined with antihistamine medicine for CIU has definite efficacy, and is relatively safe. Whether apply GTT combined with antihistamine medicine for CIU should be verified through randomized controlled trial with large-scale samples, multiple centers and high quality.

Objective To investigate the effects of Morroniside on H2O2-induced oxidative injury in SH-SY5Y neuroblastoma cells.MethodsSH-SY5Y cells were pre-incubated with Morroniside(1,10,and 100 μmol/L)for 24 h prior to exposure to H2O2(500 μmol/L)for 18 h.The content of reactive oxygen species(ROS),nitric oxide(NO),glutathione(GSH)were determined.ResultsPretreatment the cells with Morroniside(10 and 100 μmol/L)lowered H2O2-induced ROS release by 37%(P<0.01)and 27%(P<0.05)versus H2O2,and NO release in a dose-dependent manner by 31%(P<0.05),53%(P<0.01)versus H2O2.Morroniside(1,10,and 100 μmol/L)increased GSH level in cells treated with H2O2 in comparison with cells exposed only to H2O2,respectively.ConclusionMorroniside shows neuroprotection effect against H2O2-induced oxidation injury in SH-SY5Y cell.

Neural stem cells are a category of cells with self-renewal and differentiation potential. Proliferation and differentiation of neural stem cells have closely relation with growth factor, cell factor, environmental signal, and so on. In recent years, evidence indicates that neural stem cells possessing multipotency naturally occur in adult brain. The found of adult neural stem cells have changed the theory that central nervous system cannot regenerative. Chinese Traditional Medicine can effectively induce adult neural stem cells to proliferate and differentiate, opening up unprecedented direction in the research for the treatment of nerve regeneration, and showing great potency for curing cerebral ischemic injury.

BACKGROUND:Toxic effects of excessive thyroid hormone on myocardium can not be ignored with the increased incidence of hyperthyroidism. As a quantitative marker of heart failure, brain natriuretic peptide has a good application prospect to estimate the changes of cardiac function and myocardial damage in hyperthyroid cardiomyopathy. OBJECTIVE:To explore the correlation of brain natriuretic peptide and cardiac function of rabbits with hyperthyroid cardiomyopathy exhibiting different left ventricular geometries. METHODS:Twenty New Zealand purebred rabbits were used in this study. Hyperthyroidism model was established by intraperitoneal injection of levothyroxine (45 μg/kg) for 4 weeks. The success of establishing model is defined upon the appearance of irritation, decreased body weight and increased appetite. Totaly 18 rats were successfuly established. The left ventricular data of hyperthyroidism rabbits were measured by conventional echocardiography. According to the classification of Ganauet al, the 18 hyperthyroidism rabbits were divided into two groups: concentric hypertrophy (n=7) and eccentric hypertrophy (n=11). In addition, ten rats, receiving intraperitoneal injection of 5 mL saline per day, were taken as the control group. RESULTS AND CONCLUSION: Plasma brain natriuretic peptide level of rabbits in the concentric hypertrophy and eccentric hypertrophy groups was obviously higher than that of the control group (alP < 0.01), and the level in the eccentric hypertrophy group was obviously higher than in the concentric hypertrophy group (P< 0.01). Compared with the control group, the average peak diastolic velocity of mitral ring was significantly lower in the concentric hypertrophy and eccentric hypertrophy groups (alP< 0.01), the average peak systolic velocity of mitral ring was also lower in the eccentric hypertrophy group (P < 0.01). The peak systolic and diastolic velocity had a negative correlation with brain natriuretic peptide (alP < 0.01). Experimental findings indicate that brain natriuretic peptide is a sensitive indicator to reflect the cardiac function and myocardial damage in rabbits with hyperthyroid cardiomyopathy, exhibiting different left ventricular geomeies.

Objective To make comparisons of the three models of acute and chronic rheumatic carditis to find out an optimal animal model.Methods AntigenⅠwas a emulsifier mixed by complete freund’ s adjuvant( CFA) and Group A streptococcus(GAS).AntigenⅡwas mixed by incomplete freund’s adjuvant(IFA) and GAS.Female Lewis rats were randomly divided into four groups: A, B, C treatmeat groups were immuned with antigenⅠat the foot pad firstly. Subsequently, rats in group A、B、C were injected antigenⅠ, antigenⅡand activated GAS respectively to make the models of RHD.Rats in control group D were immunized with the same protocol outlined as treatment groups but without GAS. Respectively 7, 12, 24 weeks the rats were sacrificed 24 ( each group was 6).The blood biochemical item and Hematoxylin-eosin( HE) staining of hearts were detected.Results In group C the mortality was 25%.In group A, the incidence of carditis was the highest.Histopathological manifestations of group A, C was not only revealed acute damage such as inflammatory cell infiltrate as well as group B, but also the Aschofflike cells in the myocardial cells interstitial.But in group A and C there had a great degree of the inflammatory cells infiltration than group B.At 24th week rats in group A detected the rate and degree of valve fibrosis in chronic damage were higher than group B and C.None of rats in group D presented carditis or valvulitis.Conclusion In group A, giving the GAS with continuous stimulation after using the mixed emulsification of CFA and GAS to immune Lewis rats for five times was a appropriate method which could provide an optimal animal model for experimental study of acute and chronic rheumatic heart disease.

Objective To investigate the antimicrobial resistance and genotype distribution of staphylococcal cassette chromosome mec (SCCmec) of staphylococcus aureus (S.aureus) isolated from children hospitalized at Pediatric People's Hospital of Zhongjiang County.Methods Seventy-seven strains of S.aureus were collected by nasopharyngeal swabs at the Pediatric Department of People's Hospital of Zhongjiang County from January to December 2015.Methicillin-resistant staphylococcus aureus (MRSA) and methicillin-susceptible staphylococcus aureus (MSSA) were identified by cefoxitin disc diffusion and detection of mecA method.The minimum inhibitory concentrations (MIC) of antibiotics were determined by E-test method.SCCmec typing on MRSA strains was performed by using multiplex PCR.Results MRSA accounted for 54.5％ (42 strains) strains of 77 strains.All MRSA strains were resistant to Penicillin,and the rates of antibiotic resistance to Cefuroxime,Ceftriaxone,Erythromycin were 78.6％,95.2％ and 97.6％,respectively.The rates of antibiotic resistance of 35 MSSA to Penicillin and Erythromycin were 97.1％ and 62.9％,and they were also sensitive to other antibiotics.In 42 strains of MRSA,SCCmec type Ⅳa was the predominant type (27 strains,64.3 ％),which was followed by type Ⅳ g and Ⅴ (each 5 strains,11.9％),type Ⅳ c and Ⅳh (each 1strain,2.4％).Non-susceptibility rate of SCCmec Ⅳ to cefuroxime was significantly higher than that of other SCCmec types (P ＜ 0.05).Conclusions All strains from children hospitalized in People's Hospital of Zhongjiang County are often resistant to Penicillin and Erythromycin.The proportion of MRSA isolated from hospitalized children was high.SCCmec type Ⅳa is the main genotype of MRSA.

Objective To investigate the status and influencing factors of cooperation of doctors and nurses in the nutritional support of critically ill patients, and provide the basis for future improve the physician-nurse collaboration in the nutritional support. Methods Doctors and nurses who from ICU in Soochow were investigated by the Nurse-Physician Collaboration Scale (NPCS). Results The doctors′score of physician-nurse collaboration in the nutritional support of critically ill patients was 87.42 ±15.73, which was significantly higher than 80.97 ± 13.80 the nurses′(t=3.279, P= 0.001).In addition, under the item 1, 3, 5 in the dimension one as well as the total items in the dimensions two and three, the doctors′score was similarly higher than the nurses, and the differences are also statistically significant (Z=-3.894--1.964, all P<0.01 or 0.05). Technical titles, educational level and age was significantly related to the cooperative level between doctors and nurses respectively (χ2=11.037, P=0.012;F=3.488, P=0.037; F=3.499, P=0.016). Conclusions Doctors have higher levels of perceived collaboration than nurses in the nutritional support of critically ill patients, while both require further improvement. We should highlight the physician-nurse collaboration in feeding critically ill patients, and should improve the nutrition quality through standardized process management and active team cooperation.

Objective To investigate the effect of Morroniside which was isolated from Cornus officinalis on the growth and the protection against H2O2-induced injury in SH-SY5Y neuroblastoma cells.Methods SH-SY5Y cells were incubated with Morroniside in different concentration.MTT metabolic rate was measured as the cell survival rate in order to determine the best effective concentration to promote the survival of neuron.MTT metabolic rate,axonal length,area of cell body and cell counting were used as the indicators to analyze the effects of Morroniside on the growth of SH-SY5Y on the best effective concentration.After SH-SY5Y cells were injured with 500 μmol/L H2O2,they were administrated with Morroniside in different concentration and vitamin E.The expression of neural growth factor(NGF)were determined with Western Blotting.Results Morroniside increased the cell survival rate in 10～100 μmol/L.Compared with control group,MTT metabolic rate(P<0.05),axonal length(P<0.001),area of cell body(P<0.01),cell counting(P<0.05)increased in morroniside-treated group after SH-SY5Y cells were incubated with Morroniside in 10 μmol/L.The expression of NGF in morroniside-treated group was higher than that of the control group after injury induced by H2O2.Conclusion Morroniside shows the neurotrophic effect and can protect SH-SY5Y cells from injury induced by H2O2.