RESUMO
As a kind of skills clinical medical students must master, the basic teaching of operative surgery is relatively backward in teaching mode and means, thus negatively affecting the teaching effect. The virtual reality is applied to the basic teaching of operative surgery, and the pre-designed course contents are presented in a situational way, so that students can experience the immersive learning style. It changes the classroom roles, gives full play to the advantages of virtual reality, and makes up the disadvantage of traditional education mode, finally improving the training effect.
RESUMO
Objective:To investigate the effect of HSM on the immunoreaction and renal fibrosis in mice with cecal ligation and puncture (CLP).Methods: Renal fibrosis was induced by CLP;mice were divided into three groups,including sham group (sham,n =5),model group (CLP,n =11),therapy group (HSM,n =11).HSM extract [200 mg/(kg?d)] was orally administered to HSM group2 hour before surgery and repeated everyday throughout 10 days,while sham group and model group were given the same dose of normalsaline.FACS assay was used to analyze the amount of macrophages ,neutrophils and Treg in PBMC,as well as macrophages in peritonealfluid;we used Q-PCR assay to analyze the expression of inflammatory molecules (IL-1βand TNF-α) and fibrogenic cytokines (TGF-β,MMP9 and TIMP1) from renal sections.Besides,renal sections were subjected to HE stain and immunohistochemical staining with α-SMA and fibronectin.Results: The amount of model group′s macrophages and neutrophils in PBMC,as well as macrophages in theperitoneal fluid were significantly higher than sham group ′s,whereas HSM succeeded in lowering them;contrast to sham group,Tregs′amount of CLP group and HSM group in PBMC had no significant changes .The expression of inflammatory molecules (IL-1βand TNF-α) and fibrogenic cytokines (TGF-β,MMP9 and TIMP1) from CLP group′s renal sections were remarkably improved ,whereas HSM inhibitedthat.The CLP group′s HE results showed obvious renal inflammatory damage ,whereas HSM reduced the histopathologicalterations;contrast to sham group,model group′s expression of α-SMA and fibronectin was remarkably improved,while HSM groupshowed lower expression.Conclusion: HSM extract could regulate immunity response and had effect in improving renal fibrosis .
RESUMO
Objective:To investigate the effect of HSM on the inflammation and pulmonary fibrosis in mice with cecal ligation and puncture ( CLP) . Methods: Both 5 day and 10 day timepoint pulmonary fibrosis were induced by CLP;mice were randomly divided into three groups,including sham group (sham,n=5),model group (CLP,n=11),therapy group (HSM,n=11). HSM extract (200 mg/kg,less than human dose of 0. 27 g/kg) was orally administered to HSM group 2 hour before surgery and repeated everyday, while sham group and model group were given the same dose of normal saline. We used Q-PCR assay to analyze the expression of in-flammatory molecules ( IL-1β and TNF-α) and fibrogenic cytokines ( TGF-β, MMP9 and TIMP1 ) from lung tissues , we used FACS assay to analyze the amount of Th1 cells in PBMC and spleen sections,as well as Treg in spleen sections. Besides,lung sections were subjected to HE stain and immunohistochemical staining withα-SMA and fibronectin. Results:The amount of model group's Th1 cells in PBMC and spleen sections,as well as Treg in spleen sections were significantly lower than sham group's,whereas HSM succeeded in raising them. By day 5, the expression of inflammatory molecules IL-1β and fibrogenic cytokines (TGF-β,MMP9 and TIMP1) from CLP group's lung sections were remarkably improved,by day 10,the expression had decreased but was higher than sham group's;HSM inhibited these cytokines' expression. The expression of TNF-α of CLP group and HSM group had no significant changes. The CLP group's HE results showed obvious pulmonary inflammatory damage,by day 10,the situation had improved,whereas HSM reduced the histopathologic alterations;contrast to sham group,model group's expression of α-SMA and fibronectin was remarkably improved,while HSM group showed lower expression. Conclusion: HSM extract can suppress inflammation, balances immune system and relieves pulmonary fibrosis.
RESUMO
For medical caliber education and training research-oriented medical students, experimental training of medical genetics was innovated based on typical diseases. In this course, traditionally single experiments were combined in a main line and formed a whole system. Thus, the comprehensive quality and innovation ability of students were trained, as were the practical skills.
RESUMO
To accommodate the requirement of quality education and achieve the goal of the 7-year-schooling clinical medicine,experimental training of cell immunology based on pathogen-induced immunology was established in combination with traditional experiment teaching method.In this course,inductive teaching method was used.The independent study and innovation ability of student were trained,which had a better teaching effect.
RESUMO
ve To understand the effects of fenvalerate on the secretion of sex hormone and humoral im-mune function and to explore their mechanism. Methods 20 female SD rats aged 4 weeks were randomly divided into 2 groups: fenvalerate group treated by peritoneal injection with 1/10 LD50 of fenvalerate and control group treated with disinfected bean oil. The serum specimens were obtained from rats of 2 groups at the 4th week after the peri-toneal injection. The levels of interleukin-6 (IL-6). tumor necrosis factor-? (TNF-?) and immunoglobulin G (IgG) in serum were measured with ELISA. The levels of 17?-estradiol (E2) and testosterone (T) were measured with ra-dioimmune assay. Results The levels of IL-6, TNF-? and IgG in serum specimens of rats were 2.244 ng/ ml, 0.360 ng/ml and 4.928?g/ml for fenvalerate group, 2.805 ng/ml, 0.439 ng/ml and 3.825?g/ml for control group respec-tively. The levels of IL-6 and TNF-? in serum specimens of rats were significantly lower than those of control group (P 0.05. Conclusion Fenvalerate could effect the hu-moral immune system and the levels of sex hormones. Its passible mechanism was that fenvalerate could affect the levels of sex hormones first, and then the whole immune system further.