Objective:To vealuate the effect of percutaneous transhepatic insertion of biliary setents(PTIBS) and arterial chemoenbolization for treatment of malignent biliary obstruction(MBO).Methods:Twelve patients with MBO were treated with PTIBS,following by arterial chemoenbolization in two weeks,one time each months.Results:Fourteen stents were placed in 12 cases.The total serum bilirubin level declined from 534?120 umol/L to 45?23 umol/L in 11 patients.The survival rate of 6 and 12 monthes were 83.3% and 50% respectively.Two cases were reobsturcted after 5 months of first stent implacemnt and were retreated by insertion of second stents.The total thirty-five times arterial chemoembolization was performed in 12 cases with remarkable effect.Conclusion:PTIBS combined arterial chemoembolization was an safe ;effective interventional treatment for MBO. [

Objective To investigate the development and prognosis of peroxisome proliferator-activated recepor-γ(PPAR-γ) and cyclooxygenase-2(COX-2) in endometrial carcinoma. Methods The electron microscopic immunohistochemical technique was used to observe the ultrastructure location of COX-2 protein labeled by colloidal gold in the endometrial carcinoma. Results 1.There were negative immunohistochemical staining signals of PPAR-γ in both the normal endometrium and hyperplasia endometrium, whereas, was positive staining in the endometrial carcinoma;2.The intensities of the COX-2 immunohistochemical staining were significantly statistical difference among the normal endometrium, the hyperplasia endometriu and the endometrial carcinoma(P<0.01);3. The COX-2 labelled by colloidal gold granules was observed in the endoplasmic reticulum, nuclear membrane and nuclei in the endometrial carcinoma. Conclusion Both PPAR-γ and the COX-2 might play an important role in the development of the endometrial carcinoma.

Objective To investigate the expression and significance of bone sialoprotein and matrix metalloproteinase-9 in calcified mitral valves in patients with rheumatic heart disease.Methods A total of 150 mitral valves were divided into the rheumatic group (n =120) and the non-rheumatic group (n =30 ).Expressions of bone sialoprotein and matrix metalloproteinase-9 were determined by immunohistochemistry.Results Expressions of bone sialoprotein ( 91.6％,x2 =56.6354 ) and matrix metalloproteinase-9 ( 90.8％,x2 =59.4272) in the rheumatic group increased significantly than in the non-rheumatic group (P ＜ 0.01).Conclusion Both bone sialoprotein and matrix metalloproteinase-9 are highly expressed in the calcified rheumatic group.This suggests that caficify of rheumatic mitral valves is related with the degradation and remodeling of extra cellular matricx by matrix metalloproteinase-9,as well as osteoblastlike bone formation by bone sialoprotein.

ObjectiveTo observe the expression of bone sialoprotein(BSP) and matrix metalloproteinase-9 (MMP-9) in calcified valves of patients with rheumatic heart disease.MethodsA total of 150 mitral valves which were resected by surgery were divided into rheumatic group ( 120 valves) and nonrheumatic group (30 valves).Immunohistochemical staining was taken by SP method and the expressions of BSP and MMP-9 in two groups were observed and compared.ResultsThe positive expressions of BSP and MMP-9 in rheumatic group were 91.7％(110/120) and 90.8％(109/120),respectively,which were significantly higher than those in non-rheumatic group [23.3％(7/30) and 20.0％(6/30) ](P＜ 0.01 ).Conclusions The expressions of both BSP and MMP-9 are higher in the valves of patients with rheumatic heart disease.The calcification of rheumatic mitral valves is closely related with the degradation and remodeling of extracellular matrix caused by MMP-9,and osteoblast-like bone formation induced by BSP.