Objective To investigate the expression of nuclear factor kappaB(NF-κB) and regulated upon activation normal T cell expressed and secreted chemokine(RANTES) during the formatiom of ascending aortic aneurysm. Methods Forty Wistar rats were randomly divided into the control group(n=20) and the experimental group(n=20).The rat models were made by ligating the ascending aorta. The ascending aortas were taken after ligation for 3months. Immunohistochemistry staining was performed to detect the protein expression of NF-κB and RANTES. The expression of NF-κB and RANTES mRNA were detected by RT-PCR. Results Immunohistochemisry staining results showed NF-κB and RANTES expression significantly increased in aneurysm, while there was a little positive staining in the control group. RT-PCR results indicated that the expression levels of NF-κB and RANTES in the aneurysm were stonger than that of the control group. The expression of NF-κB and RANTES mRNA were remarkably correlated. Conclusion The expression of NF-κB and RANTES in ascendin aortic aneurysm are stronger than that in the control. NF-κB and RANTES may contribute to the pathogenesis of the ascending aortic aneurysm.

Objective To observe the clinical effect of conservative therapy on prolapse of lumbar intervertebral disc(PLID).Methods 365 PID patients included 78 acute cases and 287 subacute cases.The treating principle for acute cases was eliminating edema and aseptic inflammation,and that for subacute cases was releasing adhesion and removing inflammatory stimulation to nerve root.Results Of 78 acute patients,60 cases(76.9%) healed,18 cases(23.1%) improved;of 287 subacute patients,186 cases(64.8%) healed,101 cases(35.2%) improved,the effective rate of 365 patients was 99.7%.Conclusion Conservative therapy is effect on PLID at acute and subacute periods.

Objective To evaluate the effect of two polymer membranes, polyhydroxyalkanoates(PHA)and polylactic acid(PLA)during glaucoma filtration surgery(GFS),and to evaluate the morphology of membranous PHA after interlamellar implantation. Methods Twenty-eight New Zealand white rabbits were chosen and twenty-four of them were randomly divided into 6 groups(n=4):the PHA-low group,PHA-high group,PLA-low group,PLA-high group,positive control group(MMC group)and blank control group. The rabbits in each group received GFS. The corresponding polymer membranes were implanted under the scleral flap,while the MMC group was treated with 0.2 mg/mL mitomycin C(MMC) for 3 minutes,and the blank control group was treated without extra drugs. The intraocular pressure(IOP)was examined at 0 d,1 d, 3 d, 7 d, 14 d, 28 d and 84 d after GFS. The corneal layers of four rabbits were implanted with PHA membranes and the corneal morphological changes were observed after 84 d. Results The IOP of the PHA-low and PLA-high groups was lower than that of the blank control group at 84 d after GFS(P < 0.05),and was similar with that of the MMC group(P> 0.05). Morphological studies showed that there were no collagenous fibers filling in the duct, and the collagenous fibers around the membranes were generally arranged in parallel. There were no obvious changes in the peripheral collagen structure after implantation of PHA membranes between the corneal layers. Conclusions Application of PHA and PLA membranes during GFS in rabbits may maintain the level of IOP,and the effect is similar with MMC. The mechanism may be achieved through the mechanical blocking of fibrous tissue.