BACKGROUND: Edema and systemic disorder of energy metabolism after spinal cord injury can induce a series of amplifying effect, which can deterio rate the injured level. Matrix metalloproteinase-9 (MMP-9) is able to digest the basal lamina and damage the close joint of capillary vessel by proteolysis,which induces blood-brain barrier breakdown and brain edema formation.OBJECTIVE: To investigate the spatial characteristic of the MMP-9 in acute injured spinal cord so as to investigate the effect of MMP-9 on secondary spinal injury.DESIGN: A completely randomized study.MATERIALS: The study was completed in the Department of Pathology,Medical College of Wuhan University. Totally 40 healthy male Sprague Dawley rats were divided randomly into control group and model group.Five rats in control group were treated with laminectomy. Other 35 rats in model group was used to establish model of spinal cord injury.METHODS: After anesthetized, complete spinal cord tissue was taken out. Tissue of T8.9 spinal cord was cut out and every 3 serial sections of each tissue were taken out randomly for immunochemical analysis of MMP9 expression. Spinal cord tissue at injured segment was taken with 5 rats at each time point. Five visual fields (×400) of every slice were gathered randomly in injured area (sham-operation region in control group), average absorbency was determined then.MAIN OUTCOME MEASURES: Expression of MMP-9 in the acute in jured tissue of spinal cord.RESULTS: Totally 40 rats entered the final analysis. The expression of MMP-9 was observed 1 hour in model group with the peak time of 1 to 2 days and also seen on 7 days. The MMP-9 positive cells were mainly expressed on ischemic neuron, vascular endothelial cells and neutrophilic granulocyte. MMP-9 was not assayed in the control group.CONCLUSION: The early expression of MMP-9 and the characteristics of spatial distribution after spinal cord injury play a key role in tissue edema and inflammatory cell infiltration.

Objective To evaluate the clinical value of laparoscopic renalcyst unroofing as compared with open surgery.Methods The clinical data of 30 cases(group A) receiving glaparoscopic renalcyst unroofing from February 2002 to March 2005 and 15 cases(group B) receiving open renalcyst unroofing from February 2002 to February 2004 were retrospectively analyzed.The rating of depression and anxiety before operation,operating time,amount of bleeding during operation,recovery of intestinal function after operation,ambulation and normal activities after operation,the time of using intravenous after operation,the times of using analgesic after operation,the operation cost,total cost of hospitalization,the hospital stay and complications were compared between group A and group B.Results In group A,the amount of bleeding during renalcyst unroofing operation,the recovery of intestinal function after operation,ambulation after operation,the hospital stay,the resume of normal activities after operation and the occurrence of complications the time of using intravenous after operation,the times of using analgesic after operation were all better than those in group B(P

Objective To assess the cause of iatrogentic urethral stricture,prevention methods.Methods A total of 21 cases of iatrogentic urethral stricture patients were retrospectively analyzed. Results 2 cases of corpus glandulare prostatae extraction on ospectinis,2 cases of urethrolithotomy, 12 cases of transurethral resection of the prostate foe the treatment of symptomatic BPH, 5 cases of exelcymosic UCL all gained urethral sounding and urethra sliver and electrotomy. Conclusion Iatrogentic urethral stricutre can be prevented by iatrogentic urethral catheterization operation technical,reconstruction the time size quality of urethral catheterization, using intravenous. By urethral sounding and intracavitary operation,iatrogentic urethral stricture all gained satisfaction.

Objective To analyze the correlative factors of prognosis of neonatal stress-induced ulcer bleeding.Methods Fifty-four cases of NICU admitted stress-induced ulcer bleeding newborns were divided into mild group and severe group according to bleeding endurance,transfusion requirement,and clinical turnover.Compared with gender,gestational age,birth weight,and score for neonatal acute physiology(SNAP) Ⅱ and score for neonatal acute physiologyⅡ perinatal extension(SNAP-PE) Ⅱ of two groups.Results Based on the output of SPSS statistical package,the SNAP Ⅱand SNAP-PE Ⅱ had a significant deviation between two subgroups((?~2=)15.207,10.311 all P

Congresses as Topic ; Head ; surgery ; Neck ; surgery ; Otolaryngology

Bronchi ; Diagnostic Errors ; Female ; Foreign Bodies ; Humans ; Middle Aged

Objective To evaluate the effectiveness of spiral stone dislodger combined with pneumatic lithotriptor under ureteroscopy for managing upper ureteral stones. Methods 106 patients with upper ureteral stones with spiral stone dislodger combined with pneumatic lithotriptor under ureteroscopy were treated. The transverse diameter of the stones was 4～12mm and the vertical length 6～15mm. Results 87.7% (93/106) stones were fragmented for one session of treatment. 8 cases were pushed upward then undergoing extracorporeal shock wave lithotripsy(ESWL) after surgical operations. Operations in 5 cases had to be changed to open surgery,and ureteral perforations happened in 1 case. Conclusion Successful entrance of the uretersocop is a prerequisite for crushing the stone,appropriate fixation of the stone is the key to their crushing,spiral stone dislodger is an effective means of fixing ureteral stones.

Adult ; Female ; Humans ; Rectal Neoplasms ; diagnosis ; pathology ; Rectum ; pathology ; Sarcoma, Myeloid ; diagnosis ; pathology

Objective To investigate multiparametric immunophenotypic features in patients with acute myelocytic leukemia(AML)-M_2 bearing AML-1/ETO gene rearrangements and its predicting value.Methods A multiparametric flow cytometry was used in the study of phenotypic characterization of the subtype of AML.Immunophenotype of 30 patients with AML(M_2/ETO~+)was analyzed by fluorescence in situ hybridization(FISH).The results were compared with 36 patients of AML-M_2 with AML-1/ETO~- (M_2/ETO~-)and 34 acute promyelocytic leukemia(APL)patients.Results There were a population. 15.89%-68.53% the blast cell and a population of more differentiated and heterogeneous myeloid cells in the marrow of 30 patients with M_2/ETO~+.The blast cells had a myeloid phenotype(CD_(33),CD_(13)and MPO) and showed a characteristic pattern of antigen expression.The fluorescent intensity of CD_(33)in patients with M_2/ETO~+ was less than in patients with M_2/ETO~-and APL [ mean fluorescent intensity(MFI):98?75 v. 244?184 and 845?523,both P