Clinical surgical teaching is an important course of undergraduate teaching.Aiming at the problem of disconnection between operation and case in traditional video teaching and observing teaching in operation room,a new model of live surgery teaching based on case teaching was launched:intraoperative diagnosis and preoperative medical history collection were combined;intraoperative surgical anatomy and similar comparative study;teaching surgery were combined with pathology and postoperative adjuvant therapy.Through the questionnaire it was found that all of the students were satisfied with live surgery teaching,96.5％ of the students believed the model would contribute to their understanding of textbook knowledge and memory,and 94.8％ of the students thought the model could improve their interest in clinical learning.

Objective To explore the clinical outcome of individuals with Clinical High Risk (CHR) for psychosis and its relationship with Theory of Mind (ToM) function.Methods The Structured Interview for Prodromal Symptoms/Scale of Prodromal Syndromes (SIPS/SOPS) was applied to assess prodromal psychosis.The Reading the mind in the Eyes and faux pas Task were conducted to assess the function of Theory of Mind among the individuals of clinical high risk of psychosis.All participants had completed the 2-year follow-up.Conversion was determined using the criteria of presence of psychotic symptoms (POPS).According to the outcome,CHR individuals were divided into conversion group (n=20) and no-conversion group (n=50).The baseline clinical symptom characteristics and Theory of Mind were compared between groups.Results There was no significant difference in clinical symptom characteristics among individuals with CHR (P＞0.05).In the faux pas text,there were significant differences in Faux Pas Detection (P=0.01),Faux Pas Understanding (P=0.01) and Faux Pas Total (P=0.02) but not in control stories and the Reading the Mind in the Eyes Test between convertors and non-convertors (P＞0.05).Conclusion The ToM disability in clinical high risk population increases risk for conversion to psychosis.

MicroRNAs are endogenously expressed non-coding RNAs, which are composed of approximately 18 nucleotides to 25 nucleotides. Mature microRNAs regulate gene expression by base pairing with the 3'-untranslated region of target mRNAs. These mature microRNAs can degrade target mRNAs or inhibit translation. This process is a type of post-transcriptional regulation of gene ex-pression. Studies have shown that microRNAs are important in physiological and pathological processes, such as cell proliferation, cell differentiation, and cell death. This article provides an overview of the function of microRNAs in the regulation of macrophages.

Objective To construct the eukaryotic expression vector pEGFP-N1/IL-37b and analyze the expression of IL-37 gene in THP-1 cells. Methods Total RNA was extracted from human peripheral blood mononuclear cells ( PB-MCs) and the coding region of IL-37b gene was amplified by RT-qPCR. Then, the gene was cloned into pEGFP-N1 eu-karyotic expression vector. After transfected the recombinant plasmid into THP-1 cells, the expression of IL-37 was detec-ted by RT-qPCR and Western blot. Results Double restriction enzyme digestion and gene sequencing showed that IL-37b gene was correctly inserted into the eukaryotic expression vector pEGFP-N1. RT-qPCR and Western blot showed that the IL-37 expression level was increased significantly (P<0. 01) after transfection in THP-1 cells. Conclusions We successful-ly constructed a novel anti-inflammatory cytokine IL-37 eukaryotic expression vector pEGFP-N1/IL-37b, which lays a foun-dation for further study on IL-37 functions and its association with related diseases.

Objective To investigate the mechanisms of fluconazole resistance in clinical and experimental induced isolates of C.glabrata.Methods Efflux of rhodamine 6G was performed to evaluate the effects of efflux pumps.The expression levels of transporter genes CDR1,CDR2,SNQ2 and ERG11 were examined by real-time RT-PCR.Meanwhile,sequence of PDR1 was determined by PCR based DNA sequencing.Results Efflux pumps of all fluconazole-resistant isolates had stronger effects than that of susceptible isolates,consistently with significant upregulation of CDR1,but no obvious difference was found in CDR2 or SNQ2.Also,no notable change in the expression level of ERG11 between susceptible and resistant isolates.PDR1 mutations existed in both clinical and experimental induced isolates of C.glabrata,among which P927S,L543P and S947L haven't been reported previously.Conclusion Mutations of PDR1 were induced by fluconazole both in vivo andin vitro,which will result in overexpression of CDR1 and strengthen the effect of efflux pump.

0.05);the epididymal indexes were significantly increased 6,24 and 72 hours after formalin injection(P

Objective To study the effect of the extract of total flavonoids of chrysanthemum indicum(TFC) on adjuvant arthritis synovial cells. Methods 0.1ml of the complete Freund's adjuvant was subcutaneously injected into the right hind feet pads of the SD rats.24 days after immunity synovial cells in knee joint were treated with TFC and inhibition of proliferation was measured with MTT assay.DNA fragmentations were analyzed with DNA gel electrophoresis.Fluorescence staining of Hoechst 33258 to observe apoptotic body.Results The IC_50 of TFC on synovial cells was 112mg/L.DNA gel electrophoresis showed ladder-like strap.Apoptotic bodies were observed by Hoechst 33258.Conclusion TFC can inhibit proliferation and induce apoptosis in synovial cells,and exerts therapeutical effect on rheumstoid arthritis.

Objective To construct tissue microarray with astrocytic tumor microvessels(AstMV) of human brain and investigate astrocytic tumor angiogenesis.Methods Thirty-six specimens containing different microvessels from 200 specimens were selected as donor blocks,which was followed by punching,sampling and seeding samples with tissue microarray apparatus.The tissue microarrays were used to detect the expression of CD34,FⅧ-RAg and CD105.Results Tissue microarray of AstMV was successfully constructed and an instrument for location was made.CD34,FⅧ-RAg and CD105 were expressed on endothelial cell membrane or(and) plasma.There were difference in microvessel number between astrocytic tumors and between endothelial markers.In the gradeⅡ,Ⅲ and Ⅳ astrocytomas,microvessels labeled by CD34 and FⅧ-RAg antibodies were more than those detected by CD105 antibody.There were number difference in microvessels labeled by CD34 and FⅧ-RAg antibodies between grade Ⅰ and gradeⅡ,Ⅲ and Ⅳ tumors.Conclusion Construction of tissue microarray containing different tumor microvessels might be of significance in evaluating tumor angiogenesis.This study may be the basis for constructing digital tumor microvessel models and exploring the mathematic relation between astrocytic tumor microvessels and vascular growth factors.

Aim To investigate the effect of total flavonoids of Chrysanthemum indicum on proliferation of synoviocytes and TRAIL/TNF-? expression of synovial tissue with adjuvant arthritis rats.Methods SD rats were divided randomly into six groups including normol,model,TFC(84,168,336 mg?kg-1)and control drug Tripterygium glycosides(30 mg?kg-1)groups.Adjuvant arthritis rat model was induced by a single intradermal injection of 0.1 ml of the complete Freund's adjuvant into the the right hind feet pads of the SD rats.The proliferation of synoviocyte was measured by MTT;The expression of TRAIL and TNF-? on synovial tissue were detected by means of immunofluorescence.Results TFC was shown to suppress the excessive synoviocyte proliferation;The expression of TRAIL was lower in model group than that of the normal group.TFC can increase the expression of TRAIL protein;The contrary to TNF-? protein.Conclusions TRAIL play a role in the development of AA.TFC can increase the lower expression of TRAIL protein,that maybe one of the mechanisms of TFC improvement AA.

Objective: To investigate the expressions of Slit2 and its receptor Robo1 in human gastric carcinomas. Methods: The expression of Slit2 protein, Robo1 protein and CD34-labeled microvessel density(MVD) were measured by immunohistochemical staining (SP) in 54 cases of gastric carcinomas and 28 cases of Para-cancer tissues. Results:The positive rates of Slit2 ,Robo1 were 63.0% and 77.8% and the expression of Slit2 , Robo1 and MVD in cancerous tissues were higher than those in para-cancer tissues2(?2=26.586,P