Objective To investigate the effect of botulinum toxin type A injection on the expres-sion of substance P, TGF-β1 and α-SMA in rabbit ear model of hypertrophic scar. Methods The hyper-trophic sear model was established in 24 Japanese rabbits'ears. The wounds in ventral surface of ear were divided in Group I (lateral wounds) and Group S (medial wounds), 3 wounds each side per ear, totally 72 wounds each group. The wound-healing time and the growth of scar were observed and recorded. On post-wounding day 28, the wounds were created in another 6 rabbits in the same way and the normal skin were harvested as Group C. Likewise, the scar samples in Groups I and S were harvested. The mRNA expression of substance P, TGF-β1 and α-SMA were detected quantitatively by using real-time PCR and α-SMA was also detected with Western blot. Results No difference between the ratio of healed or infec-tious wounds on post-wounding day 14. The mRNA expression of SP, TGF-β1 and α-SMA in Group I was significantly lower than Group S, but higher than those in Group C (P<0. 01 and <0. 05, respec-tively). The blot density of α-SMA and the ratio of blot density of a-SMA to β-actin in Group I were be-tween that of the other two groups. Conclusion Without delaying the wound-healing, botulinum toxin type A injection significantly decreases the expression of SP, TGF-β1 and α-SMA in rabbit ear model of hypertrophic scar.

Objective To study the incidence of malignant tumors in renal allografts and explore the mechanism of increased incidence.Methods A retrospective study was performed on 1 120 renal allografts under at least 0.5 year immunosuppression from 1978～2000. Results 47 cases of malignant tumors were found in 1 120 cases undergoing renal transplantation with the incidence being 4.2?%. 40 cases had intact medical history and 34 cases were demonstrated pathologically. Most patients accepted operations, additional therapies including chemical or radiological and immunological therapies. 25 cases survived and the longest survived time was 4.5 years. Conclusions The incidence of malignant tumors in renal allografts was higher than normal persons. Besides the outcome of immunosuppression, the effects of transplantation itself, such as oncogene chimera, transition of carcinogenic virus and so on, can not be neglected.

ObjectiveToinvestigatetheMunicipalHospital(Ezhoucity)theimplementationofruralbasic public health service mode of linkage of areaeffect.Methods The hospital public health division of functions and du-ties,the integration of technology and equipment strength,mobilize theinformation flow,focused team of experts,stand-ardize the informationnetwork,to carry out drive rural area of basic public health work.Results The three level hos-pitals of Ezhou played a leading role,has been associated with lower hospital ( Taihe, Gedian) to establish a long-term cooperative relations,for the scientific management of basic public health items the purpose of the make and model.Conclusion The comprehensive hospital,reflect the public interest in public health work,to achieve the inte-gration of urban and rural public health pattern.

OBJECTIVETo explore the role of S100A4 in the epithelial-mesenchymal transition (EMT) in esophageal squamous cell carcinoma and its possible molecular mechanism.

METHODSThree chemically synthesized S100A4 siRNA sequences were transiently transfected into esophageal carcinoma EC9706 cells. EC9706 cells transfected with negative siRNA, lipofectamine 2000, and vacant EC9706 cells were used as control. Fluorescence quantitative RT-PCR and Western blot were used to detect the inhibition rate of S100A4 siRNA. S100A4 siRNA2 with the best inhibition rate was chosen to transiently transfect into EC9706 cells under the same conditions. The EC9706 cells transfected with negative siRNA, lipofectamine 2000 and vacant EC9706 cells were also used as control. Fluorescence quantitative RT-PCR and Western blot were used to detect the mRNA and protein expressions of E-cadherin, vimentin and snail. The morphology of EC9706 cells was observed under an inverted microscope. Boyden chamber and scratch test were used to detect the invasion and migration ability of EC9706 cells, and CCK8 assay was used to detect the proliferation ability of EC9706 cells. EC9706 cells transfected with S100A4 siRNA2 were further transfected with snail eukaryotic expression vector. The EC9706 cells transfected with S100A4 siRNA, EC9706 cells transfected with snail eukaryotic expression vector and vacant EC9706 cells were used as control. The above indexes of all the groups were observed, too.

RESULTSThe S100A4 mRNA and protein expression levels of the S100A4 siRNA2 group were 0.417 ± 0.041 and 0.337 ± 0.039, the transmembrane cell number was 61.608 ± 8.937, the scratch healing distance was (0.216 ± 0.064) mm, the A value was 0.623 ± 0.084, the E-cadherin mRNA and protein levels were 0.619 ± 0.032 and 0.495 ± 0.034, the vimentin mRNA and protein levels were 0.514 ± 0.032 and 0.427 ± 0.028, the snail mRNA and protein levels were 0.573 ± 0.029 and 0.429 ± 0.041. These data were significantly different with the liposome group, the negative control group and the blank group (P < 0.05 for all). After the S100A4 siRNA2 treatment for 24 h, the appearance of EC9706 cells changed to epithelial cell morphology. The transmembrane cell number and the scratch healing distance of the S100A4 siRNA2+snail eukaryotic expression vector group were (69.382 ± 9.666) cells and (0.274 ± 0.029) mm, the A value was 0.823 ± 0.101, the snail mRNA and protein levels were 0.704 ± 0.037 and 0.625 ± 0.031, the vimentin mRNA and protein levels were 0.712 ± 0.046 and 0.609 ± 0.038, and these data were significantly higher than those of the Sl00A4 siRNA2 group (P < 0.05 for all). The E-cadherin mRNA and protein levels of the S100A4 siRNA2+eukaryotic expression vector group were 0.437 ± 0.038 and 0.381 ± 0.031, significantly lower than those of the S100A4 siRNA2 group (P < 0.05 for all). However, snail had no effect on the morphology of EC9706 cells.

CONCLUSIONSS100A4 may be involved in the EMT process of esophageal squamous-cell carcinoma by regulating the expression of snail and then plays a role in the invasion and metastasis of esophageal carcinoma.

Cadherins ; analysis ; Carcinoma, Squamous Cell ; metabolism ; pathology ; physiopathology ; Cell Line, Tumor ; Epithelial Cells ; Epithelial-Mesenchymal Transition ; Esophageal Neoplasms ; metabolism ; pathology ; physiopathology ; Humans ; Indicators and Reagents ; Lipids ; RNA, Messenger ; analysis ; RNA, Small Interfering ; analysis ; physiology ; S100 Calcium-Binding Protein A4 ; S100 Proteins ; antagonists & inhibitors ; genetics ; physiology ; Snail Family Transcription Factors ; Transcription Factors ; analysis ; genetics ; Transfection ; Vimentin ; analysis ; genetics

Purpose　To study the pathological characteristics, diagnostic criteria and differential diagnoses of the lymph node marginal zone B-cell lymphoma (LMZL), for the clinical treatment and prognosis. Methods　Histopathology and immunohistochemistry(ABC method) were used in ten cases of LMZL. Results　There were six male and four female. Lymphadenopathy was the main symptom in all of the cases, of which none had hepatosplenomegaly and abnormal lymphocytes in the peripheral blood. Two of them were marginal zone type, four nodular type, two diffuse type and two blastic type morphologically. Five of them were central cell like (CCL) type, six monocytic B-cell (MBC), two of them lymphoplasmacytic and two blastic histopathologically. Immunophenotyping was done in ten cases and supported the diagnosis. Conclusions　LMZL and MALT-type lymphoma have similar appearance, immunophenotype and cell origin. Based on the structural features, LMZL is a special entity.

Objective To explore the application of mini-laparoscopy in the diagnosis and management of nonpalpable undescended testis in children.Methods 38 cases of impalpabal testes(46 testicular) had been operated by mini-laparoscopy in children with cryptorchidism.Results 38 children with nonpalpable undescended testis (46 testicular) had been operated by mini-laparoscope.Results After laparoscopic exploration,inguinal probe and postoperative pathology,it had been confirmed that 2 testicular were absent,34 testicular were found in high inguinal location,10 testicular were located in intraperitoneal cavity.In addition to the absent testicular,the rest had been performed with mini-laparoscope:one period descent fixation 41 testes,Fowler-Stephens (F-S) installment orchiopexy three testes.Follow-up with side testicular atrophy 2,including one period orchiopexy a testis,F-S installment fixation a testicular; Testicular rebound 1,who had been operated with one phase of testicular descent fixtion.Conclusion For inguinal failed to find the testicular,children with cryptorchidism should be done by laparoscopy because of its positioning accuracy,and most children can do a period drop fixed,but for those really intraperitoneal more exalted person,stage surgery should be needed.Its overall treatment effect is satisfactory and is worth popularizing.

Cerebellar Neoplasms ; pathology ; Hemangioblastoma ; pathology ; Humans

Gene Rearrangement ; Humans ; RNA-Binding Protein EWS ; genetics ; Soft Tissue Neoplasms ; genetics

Objective To study the radiological,clinicopathological features and prognosis of metanephric adenoma.Methods Two cases were selected,which underwent partial and radical renal resection.Examined the microscopic,immunohistochemical and radiological features of 2 metanephric adenoma cases.All patients were examined by ultrasound,CT and magnetic resonance imaging.Results They were lack of blood supply in imaging examination.The tumor cells were uniform with few eosinophilic cytoplasm.The chromatin is exquisite and lack pathological mitotic figure.The tumor cells were arranged in small tube or alveolar and locally showed papillary hyperplasia.Sometimes psammoma bodies were shown..Metanephric adenoma showed positive to Vimentin and CK.Conclusions Metanephric adenoma is a rare renal tumor mostly occur in single renal.And its morphological characteristic is diversity,so it's easy being misdiagnosed as malignant tumor.The pathologists should be careful and have the concept of metanephric adenoma when diagnosis.

Objective To investigate the influence of neoadjuvant chemotherapy on the occurrence of postoperative nausea and vomiting ( PONV) after radical mastectomy. Methods A total of 286 breast cancer patients, aged 18-60 yr, of American Society of Anesthesiologists physical status Ⅰ or Ⅱ, scheduled for elective modified radical mastectomy under general anesthesia in our hospital, were divided into either non?chemotherapy group ( n=106 ) or neoadjuvent chemotherapy group ( n=180 ) . General anesthesia was induced with iv propofol 2 mg∕kg, rocuronium 0. 6 mg∕kg and sufentanil 0. 2 μg∕kg. The patients were endotracheally intubated. The concentration of sevoflurane inhaled was adjusted according to the value of bispectral index, and bispectral index value was maintain at 40-50. Ondansetron 8 mg and flurbiprofen axetil 100 mg were injected intravenously at 30 min before the end of surgery. If vomiting occurred for 2 consecutive times, and continuous nausea and vomiting appeared from the time point after extubation to 24 h after surgery, and the patients required treatment, rescue medication was used. The occurrence and severity of PONVwithin 24 h after surgery and requirement for rescue medication were recorded. Results Compared with non?chemotherapy group, the incidence of PONV within 24 h after surgery and requirement for rescue medication were significantly increased, and the severity of PONV was aggravated in neoadjuvent chemotherapy group (P<0.05). Conclusion Neoadjuvant chemotherapy before surgery can increase the risk and severity of PONV after modified radical mastectomy.