The effects of dazoxiben on the release of 6-keto-prostaglandin F1?(6-keto-PGF1?) and thromboxane B2(TxB2) in rat neutrophils and 14C-arachidonic acid (14C-AA) metabolization in washed rat platelets were studied.Dazoxiben increased the release of 6-kcto-PGF1? and decreased the release of TxB2 from A23187-stimulated rat neutrophils in a dose-dependent manner in the range of 0.1-5?mol/L drug.The products of 14C-AA metabolism in washed rat platelets wire determined by thin-layer i.adiochromatogra-phy, including thin-layer radio-scanning, autoradiography and liquid scintillation counting.In platelet suspensions stimulated in vitro with 14C-AA, TxB2 and 12-hydro-xy-5, 8,10-heptadecatrienoic acid (HHT) contents were reduced in a doss-dependent manner and a significant redirection of endo-peroxide metabolism to prostaglandin E2, F2?, and D2 was demonstrated after the addition of 0.5~50?mol/L dazoxiben.It is suggested that dazoxiben can inhibit the activity of thromboxane A, synthttases not only in rat platflets but also in rat neutrophils.

Objective To evaluate the outcomes of microdiscectomy for treatment of recurrent lumbar disc hemiations. Methods There were 18 cases of recurrent lumbar disc berniations accepted microdiscectomy (reoperation group), compared with 30 cases of primary lumbar microdiscectomy (primary group). Operating time, blood loss and length of hospital stay were compared between two groups. MacNab criteria were used to evaluate the outcomes. Results Operating time was a mean of 75 min in reoperation group, 52 min in primary group. Blood loss of reoperation group was 70 ml, 50ml in primary group. Length of hospital stay was 8.5d in reoperation group, 6.5d in primary group. There were one dural tear, two Ls root lesions and 5 more numbness reoperation group, but recovery all patients. There were one dural tear in primary group. 17 cases got follow-up mean 12.1 months in reoperation group and 29 cases in primary group mean 11.8 months. The results demonstrated 88.2% success rate in reoperation group and 93.1% in primary group. There was no significant dif-ference in two groups (P ＞ 0.05). Conclusion Outcomes of Lambar mierodisceetomy with mini-open for treatment of recurrent lumbar disc herniations are similar to primary lumbar mierodiscectomy.

Objective To investigate Caspase 3 activity in the ischemia reperfusion injury in rats and the protective effect of ischemic preconditioning and its possible mechanism.Methods 30 rats were randomly assigned to ischemia reperfusion (IR) group, ischemic preconditioning(IP) group,sham-operation(S)group.The serum aspartate transaminase (AST),alanine transaminase(ALT),liver caspase 3 activity,and apoptosis index(AI) of hepatocytes were examined in the three groups at 3 hours after repersusion.Results The serum AST,ALT,liver caspase 3 activity and apoptotic hepatocytes were significantly higher in both IP and IR groups than those in S group(P

0.05) while that in groups A and C differed from group B ( P

Objective To study the relationship between expression of Caspase 3 and regression of hemangioma. Methods Caspase 3 expression was detected in 79 hemangiomas and 5 normal skin tissues by immunohistochemistry (SP). Results In 79 hemangiomas, the positive rates of Caspase 3 expression in proliferating, involuting and involuted phases were 52.4%, 91.2% and 83.3%, respectively. The expression of Caspase 3 in involuted and involuting phases was higher than proliferating phase( P 0.05). Conclusion Caspase 3 is involved in the converting of hemangiomas from proliferating phase into involuting phase. The activation of Caspase 3 may induce apoptosis of endothelial cells, thus leading to the regression of hemagioma.

To develope a 5 lipoxygenase inducible expression system for further understanding the function and signal transduction pathway of 5 lipoxygenase, providing information for drug screening.The 2 kb 5 LO cDNA sequence containing HindⅢ site was generated by PCR using pEGFP 5LO as a template. Full length 5LO cDNA was subsequently cloned into the corresponding Pst Ⅰ and Sal Ⅰ sites of the plasmid pBI G to generate the mammalian expression vector pBI 5LO. HeLa Tet On cell line was co transfected with pBI 5LO and pTK Hyg plasmids. Inducible expression of target gene was detected using X gal histochemical staining of cell monolayers for ? galactosidase after incubating the transfected cell line with 1 ?g/ml doxycycline for 48 h.The HindⅢ restriction digest site was inserted into polyclonal site of pBI G and recombinant vector pBI 5LO was constructed. The desired recombinant plasmid pBI 5LO was identified by restriction analysis, and orientation and junctions were confirmed by sequencing. Induction of the target gene expression by doxcycline treatment was demonstrated by X gal histochemical staining and nuclei of the cells that have expressed the pBI 5LO expression vector were brilliant blue.The 5LO inducible expression system is established successfully and it works well in cell model.

Objective To evaluate the primary outcomes of minimally invasive lumbar microdiscectomy. Methods There were 34 cases with single lumbar disc herniation treatment of tubular retractor access with METRx system and microdiscectomy(MMD group)and same cases with treatment of conventional discectomy(CD group).Operating time,blood loss,time of leaving the bed and length of hospital stay were compared in two groups.The postoperative wound pain was measured using a visual analog scale(VAS).The modified MacNab criteria were used to evaluate the outcomes. ResuIts The mean operating time was 65 min in MMD group,63 min in CD group.The mean blood loss was 34 ml in MMD group,85 ml in CD group.To compare in two groups,there was significant difference(P＜0.05).The mean time of leaving the bed after operation was 3.2 d in MMD group.5.8 d in CD group.The mean length of hospital stay was 5.8 d in MMD group.9.6 d in CD group.The mean VAS of the postoperative wound pain was 3.2 scores in MMD group,5.6 scores in CD group.To compare in two groups,there was significant difference(P＜0.05).There was one complication in MMD group,4 in CD group.Thirty-three cases got follow-up mean 8.5 months in MMD group.The success rate was 93.9%. Conclusion The minimally invasive lumbar microdiscectomy has the advantages on less trauma,safety,quickly postoperative recovery,and satisfactory outcomes.

Purpose: To investigate a clinical treatment for allergic asthma. Method: Acupoint application was used, and its effect was compared with that of Western medicine to evaluate the results. Results and Conclusion: It was found that the long-tern effect of acupoint application was significantly better than that of aminophylline; acupoint application had obviously different effects on different types of asthma based on TCM differentiation of syndromes; its short-term effect was not significantly related to the course and condition of the disease. It is indicated that acupoint application is an effective, convenient and safe treatment with little side effect for asthma.

[Objective]To report the initial outcomes of occipitocervical fixation using plate-rod-polyaxial screw system and investigate whether this new system offers any advantage over other existing methods of fixation.[Method]Fourteen cases(male 9,female 5)accepted cervicooccipital fixation with plate-rod-polyaxial screw system.There were 3 cases of odontoid dysplasia with dislocation;spinal canal tumor in 3;2 cases of metastatic carcinoma with pathologic fracture of C_1 and C_2,rheumatoid arthritis with cervicooccipital instability,and fasilar impression;burst fracture of C_1 with oecipital-atlantal-axial instability in 1.Twelve cases had neck pain.Thirteen cases had neurological deficits in different degrees.JOA score was 12.4 on average.[Result]The positions of all screws were good.There was no complication related to inserting screws.All neck pain released.Fourteen-months follow-up was obtained on average in 13 patients.Cervicooccipital nonunion was in one case and its occipital screws were pulled out.Twelve patients had satisfactory fixation and got firm fusion.Ameliotate rate of JOA score of the neurological function was 63.0%.[Conclusion]These initial data indicate that posterior occipitocervical fixation using plate-rod-polyaxial screw system is safe and reliable,and satisfactory clinical outcome can be obtained.The system appears to offer some advantages over other existing methods of fixation.

A new method of mismatching PCR-RFL P was performed in our lab in ge- netic diagnosis of spinal muscular atrophy(SMA) and controls.Our data shows:9cases in 1 0 presumed SMA children are positive,i.e. deletion of telomeric SMN gene.One case is negative.2 0 cases of normal familial members and2 0 cases of normal controls are all nega- tive.Our results matches the criteria and reports of foreign countries.The method we used is highly specific,sensitive and useful and is suittable for genetic diagnosis of SMA and its prenatal diagnosis.