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.

Research of antibacterial effect, progress and actuality of application of metal-ion antibacterial agents of were reviewed in the present paper. Research of effect to health and development tendency of metal-ion antibacterial agents of in the future was discussed. Metal-ion antibacterial agents are made of mineral carrier and interim metal-ion or light catalytic agent of oxide or organic antibacterial agent composite, they are a kind of new type antibacterial agents showed some excellent properties and efficiency, they will play a more and more important role to protect environment and enhance human health in the future.

Objective To explore the clinicopathological and immunohistochemical features of wolffian adnexal tumour ( WAT) . Meth-ods The clinical and pathological features analysis and immunohistochemistry methods were utilized to study the histopathology features of a case Wolffian adnexal tumor. Results One case of unilateral WAT which located in broad ligament display a solid-cystic mass with pedicled and enveloped,its histology showed large and small tubulars,screen structure and solid zone. Its immunohistochemistry staining was positive for pan-cytokeratin,vimentin,CK18 and CD99,positive staining for α-inhibin in a little tumor cell,and negative for calretinin,CD10,EMA, ER,PR,Syn,CA15-3,CA19-9,Ki-67 index is less than 5%. PAS positive staining for the basement membrane around Gland like structure. Conclusion Wolffian adnexal tumour is diagnosised by its histopathological,immunohistochemical and it’ s distinctive location where Wolffi-an duct remnants are found.

Purpose To analyze the clinical and pathological features of intracranial tumor in children. Methods 221 cases of in-tracranial tumors in children ( ages≤18 years) were retrospectively analyzed. Results The cases of intracranial tumor in children ac-counted for 7. 21% of total cases in our hospital during the same period. There is no documented gender bias. There were only 14 cases (6. 33%) with age less than 3 years old. The supratentorial tumors were 153 cases (69. 23%) and infratentorial tumors were 68 cases (30. 77%) . The most frequently affected sites were the cerebral hemispherse, sellar region, vermis and the fourth ventricle. There were 89 benign tumor and 132 malignant tumor in this series of cases. The most common five tumors were astrocytic tumors (30. 32%), embryonal tumors (19. 00%), craniopharyngiomas (11. 76%), ependymal tumors (8. 14%) and germ cell tumors (5. 88%). Conclusion The morbidity of intracranial tumors in children has increased in the recent years. The histological classifica-tion of intracranial tumors in children is multiple and it is essential to make a correct diagnosis.

To explore the diagnostic value of susceptibility weighted imaging (SWI) for intracranial cavernous hemangioma.The magnetic resonance sequences of SWI,conventional imaging (MRI) and diffusion-weighted imaging (DWI) were performed in 37 patients of intracranial cavernous hemangioma to compare their different imaging capacities.Among them,the number of lesions found on T1WI,T2WI,DWI and SWI sequences were 40,41,42 and 50 respectively.Thus SWI may detect regular MRI negative or smaller lesions of intracranial cavernous hemangioma.

Objective To investigate the chemical constituents of gorgonian Muriceides collaris. Methods The compounds were isolated and purified by silica gel column,Sephadex LH-20 column chromatography and HPLC. Their chemical structures were identified by physicochemical analysis,spectroscopic analysis,and comparison with the data of literatures. Results From the CH3OH soluble extract of Muriceides collaris,nine compounds were isolated,and their structures were determined as cholesterol (1),batyl alcohol (2),benzoic acid (3),uracil (4),thymine (5),2'-deoxyuridine (6),2'-deoxythymidine (7),thymidine (8) and 2'-deoxyadenosine (9),respectively. Conclusion All compounds were obtained from the species Muriceides collaris for the first time.

Objective To investigate the relationship between the blood pressure in subjects with impaired glucose relation and the first-phase insulin secretion.Methods The oral glucose tolerance test was performed in 126 subjects who were divided into normal blood pressure group higher blood pressure group and hypertension group.The beta-cell function was calculated by HOMA-IR and △I30/△G30.Results ①The BMI and WHR were significantly higher in hypertension group.The serum level of lipids was changed in higher blood pressure and hypertension groups.② The fasting plasma insulin level,60、120 minutes insulin level after oral 75 game glucose were significantly higher in hypertension group.③ The HOMA-IR was significantly higher in higher blood pressure and hypertension groups,with more higher in hypertension group.④ The △I30/△G30 was significantly decrease in hypertension group.There are no different in other groups.Conclusion The higher blood pressure,the more severe insulin resistance,the more decrease first-phase insulin secretion.

Objective To investigate the incidence of left-sided portal hypertension (LSPH) in chronic pancreatitis (CP) and other accompany conditions of CP and explore the diagnostic value of LSPH in chronic pancreatitis.Methods The clinical,pathological and imaging data of 125 CP patients received at least two imaging examination were retrospectively analyzed.The rates of abnormal pathologic findings,abnormal imaging findings and accompanying LSPH in CP were analyzed.The data were analyzed by chi-square test.Results Among 125 CP patients,29.6％ (37/125) received three or more than three kinds of imaging examinations.The pathological detection rates of pancreatic calcification or lithiasis,pancreatic ductal lesion,abnormal pancreatic morphology,pancreatic lesion and LSPH were 58.4％ (73/125),60.8％ (76/125),35.2％ (44/125),48.8％ (61/125) and 24.8％ (31/125),respectively.The sensitivities of imaging examination in those lesions were 68.5 ％(50/73),96.1％ (73/76),95.5％ (42/44),95.1％ (58/61) and 90.3％ (28/31),respectively.The detection rates of pancreatic calcification or lithiasis and pancreatic ductal lesion in pathological examination were significantly higher than those of the others,and differences were statistically significant (x2=33.764 and 37.932,both P＜0.01).The sensitivity of imaging examination in pancreatic calcification or lithiasis was lower than those of the others and the differences were statistically significant (x2 =36.526,P＜0.01).Among 125 CP patients with 223 pancreatic lesions detected by imaging examination,the rates of patients with 0,1,2,3,4 lesions accounted for pancreatic were 5.6％ (7/125),40.0％ (50/125),28.8％ (36/125),21.6％ (27/125) and 4.0％ (5/125),respectively.Of patients with pancreatic calcification or lithiasis,pancreatic ductal lesions,abnormal pancreatic morphology and pancreatic lesions detected by pathological examination,there were 23.7 ％(17/73),20.0％ (15/76),22.6％ (10/44) and 27.9％ (17/61) cases accompanied with LSPH,there was no difference between these groups (x2 =1.262,P=0.738).Conclusion LSPH may be a reference for CP diagnosis by imaging examination.

Recent studies have showed that nanotechnology pro-vides a new revolution for the treatment of complex,refractory autoimmune or inflammatory diseases.Nanoparticles combined with specific autoantigens can restore the peripheral tolerance and reduce immunopathological damage in a variety of autoimmune disease models.In this paper,we review the progress and trends of nanomedcine for treatment of autoimmune or inflammatory dis-eases as immunomodulatory therapy from the physical and chemi-cal characteristics of nanoparticles,the route of administration, and the role and mechanism of induction or reconstitution of im-mune tolerance,which provides a theoretical basis for seeking new treatments to treat inflammatory diseases.

Aim To explore the effect of adenylate cyclase(AC) antagonists SQ22536 and agonist forskolin on acute lung injury induced by lipopolysaccharide.Methods ICR mice were randomly divided into normal saline control group(N group), model group(group L), dexamethasone group(group D),AC antagonists s(group SQ) and AC agonist group(group F).The ALI mouse model was induced by instilling intratracheally with LPS(2 mg·kg-1), and 6 h later, the lung tissue and alveolar lavage fluid(BALF) were harvested, pathological changes in lung were observed, white blood cell and neutrophil, albumin content in BALF and myeloperoxidase(MPO) activity of lung tissue homogenate were determined, and tumor necrosis factor α(TNF-α), interleukin-1β(IL-1β), interleukin 6(IL-6) and cAMP content in lung homogenates were detected by ELISA.Results Compared with normal saline group, a large number of neutrophils infiltrated around the pulmonary vessel and airway 6 h after LPS intratracheal instillation in model group.White blood cells and neutrophils and protein content increased in BALF;MPO activity and cAMP levels increased in lung tissues.In the lung tissue TNF-α and IL-6, IL-1β content increased, compared with model group.Forskolin could improve the pathological changes of lung tissue, reduce the total number of leukocytes, number of neutrophils and protein content in BALF, and reduce MPO activity and TNF-α content in lung tissue, at the same time it increased the cAMP content;SQ22536 had no significant effect when compared with model group.Conclusion AC agonists have protective effects on LPS-induced acute lung injury in mice, and the mechanism may be related to elevating cAMP levels, inhibiting neutrophil adhesion and chemotaxis and reducing inflammatory factor levels.