目的:建立胶原包裹挂线法家兔动脉血栓形成模型,并进行综合评价。方法:53只家兔随机分为正常组、挂线组、胶原包裹挂线组、胶原包裹挂线加阿司匹林处理组(阿司匹林组)、胶原包裹挂线加氯吡格雷处理组(氯吡格雷组)、胶原包裹挂线加阿司...目的:建立胶原包裹挂线法家兔动脉血栓形成模型,并进行综合评价。方法:53只家兔随机分为正常组、挂线组、胶原包裹挂线组、胶原包裹挂线加阿司匹林处理组(阿司匹林组)、胶原包裹挂线加氯吡格雷处理组(氯吡格雷组)、胶原包裹挂线加阿司匹林和氯吡格雷处理(阿司匹林和氯吡格雷组)6组,分别进行相应的处理,观察在不同情况下组织病理学改变。用ELISA法(enzym link immunology assay,ELISA)检测1,6-二磷酸果糖二钠盐(D-fructose-1,6-diphosphate trisodium salt octahydrate,FDP)、D-二聚体(D-dimer)和组织因子(tissue factor,TF)。结果:组织病理学检查发现胶原包裹挂线组较挂线组血栓形成明显,血管内弹力膜损伤严重,用阿司匹林及氯吡格雷干预后,动脉血栓有大部分软化、溶解、吸收;胶原包裹挂线组与正常组、挂线组相比较,血栓湿重、干重、D-dimer、FDP及TF明显增高(P<0.01);3组药物干预后血栓湿重、干重及D-dimer、FDP和TF血浆水平均显著降低(P<0.01);与阿司匹林组、氯吡格雷组相比较,阿司匹林加氯吡格雷组能显著降低血栓湿重、干重、D-dimer和FDP水平(P<0.01);与阿司匹林组比较,阿司匹林加氯吡格雷组TF水平明显降低(P<0.05)。结论:胶原包裹挂线法动脉血栓模型明显优于单挂线法,且直观可靠、重复性好、成功率高,可反映抗栓药的药效,是一个理想的研究动脉血栓形成的动物模型。展开更多
目的研究益气活血风静胶囊对大鼠血栓形成模型的影响。方法取SD大鼠,随机分为空白对照组、脑心通组和益气活血风静胶囊高、中、低剂量组,灌胃给药28天后,造大鼠动静脉旁路血栓形成模型,测定血栓湿重及干重,比较各试验组与空白组的差异,...目的研究益气活血风静胶囊对大鼠血栓形成模型的影响。方法取SD大鼠,随机分为空白对照组、脑心通组和益气活血风静胶囊高、中、低剂量组,灌胃给药28天后,造大鼠动静脉旁路血栓形成模型,测定血栓湿重及干重,比较各试验组与空白组的差异,统计方法采用t检验。结果益气活血风静胶囊高、中、低剂量组均能明显降低血栓的湿重(P<0.01 or P<0.05),高、中剂量组能明显降低血栓的干重(P<0.01 or P<0.05)。结论益气活血风静胶囊对大鼠血栓形成有明显抑制作用。展开更多
Objective: To study the pharmacokinetics of native r SAK in rabbit's femoral artery thrombosis model, the “lytic circle' method was used to determine plasma levels of r SAK. Methods: Thirty New Zealand rabb...Objective: To study the pharmacokinetics of native r SAK in rabbit's femoral artery thrombosis model, the “lytic circle' method was used to determine plasma levels of r SAK. Methods: Thirty New Zealand rabbits were randomly assigned to the control (saline 10 ml, 30 min), r SAK low dose (0.25 mg/kg, 30 min), medial dose (0.50 mg/kg, 30 min), high dose (1.00 mg/kg, 30 min), single bolus (0.50 mg/kg, 2 min) and conjunctive therapy (initiated with heparin 200 U/kg, followed by infusion of r SAK 0.50 mg/kg for 30 min, and subsequently infused heparin 50 U/(kg·h) to endpoint) groups. The right femoral artery thrombosis model in rabbit was made by balloon injury, then the thrombolytic agents were infused through parallel ear vein and the blood samples were collected pre thrombolysis and at different time post thrombolysis to determine the plasma levels of r SAK by “lytic circle' method, the plasma levels of r SAK were processed by pharmacokinetic computing procedure to fit the model. Results: The plasma levels of r SAK and the diameters of lytic circles showed a pretty good linear correlation under the scope of 2.0×10 4 2.0×10 6 U/L, and the averaged recycle rate was (96.05±11.35)%(RSD =±11.82%).All peak concentration time in each infusion group was 30 min, and the peak concentrations positively correlated with the doses administrated in infusion groups(r=0.999 98, P <0.000 1). In single bolus group, Peak concentration time was 2 min, and the peak concentration reached (5.16±1.02) mg/L, which was significant higher than that in the same dose r SAK infusion group ( P <0.01). In conjunctive therapy group, the peak concentration showed no significant difference from that in the same dose r SAK infusion group ( P >0.05). The plasma levels of r SAK fit in two compartment model as processed by pharmacokinetic computing procedure in each group. Conclusion: The “lytic circle' method is a simple, practical and reliable method to determine the plasma level of r SAK, and the pharmacokinetics of native r SAK infusion fits in two compartment model in rabbit's femoral artery thrombosis model.展开更多
Objective：To study the expression changes of matrix metal loproteinases （MMPs） in traumatic deep vein thrombosis （TDVT） in a rat model with the aid of gene chip technology and to explore the roles of MMPs in TDVT...Objective：To study the expression changes of matrix metal loproteinases （MMPs） in traumatic deep vein thrombosis （TDVT） in a rat model with the aid of gene chip technology and to explore the roles of MMPs in TDVT.Methods：Totally 150 Sprague Dawley rats were randomly divided into control group （n=10） and model group （n=140）. Rat models of TDVT were established by clamping the femoral vein and fixing the bilateral hind limbs. Then fixation of the hip spica with plaster bandage was conducted.According to the observation phases and/or biological situations of the femoral vein thrombosis, the model rats were further divided into 7 groups. Vascular tissues were obtained from each group through noninvasive incision into the femoral vein at corresponding time points. We adopted the Trizoi one-step method for total RNA extraction,Affymetrix RAT 230 2.0 array for detection of RNA expressions and fold change （FC） analysis for changes of differential expressions of MMPs in each group. The main outcome parameters measured included expressions of MMP-2,MMP-3, MMP-7, MMP-8, MMP-9, MMP-10, MMP-11,MMP- 12, MMP-13, MMP- 14, MMP- 16, MMP-23 and MMP-24. Gene array data of these MMPs were analyzed by the Affymetrix Microarray Analysis software （Version 5.0）.Results：FC analysis showed differential expressions of MMPs in each group during the course of TDVT. At the initial period of thrombosis, MMP-2, MMP-3, MMP-7,MMP-8, MMP-9, MMP- 10, MMP-11, and MMP-24 had significantly high expression, while MMP-12, MMP-13,MMP-14, MMP-16 and MMP-23 had relatively low expression. MMPs were all highly expressed at the peak time of thrombosis. In the process of thrombus resolution,MMP-2, MMP-10, MMP-16 and MMP-24 have relatively low expression, while MMP-12, MMP-13, MMP-14,MMP-16 and MMP-23 have significantly high expression.Conclusion：MMPs may affect the process of TDVT through transcription regulation of the fibrinolysis-anti-fibrinolytic system during the course of thrombosis and thrombus resolution.展开更多
OBJECTIVE: To investigate the anti-platelet aggregation and antithrombotic effects in rats of iridoid glycosides extracted from Zhizi (FructusGardeniae). METHODS: The present study evaluated the antithrombotic activit...OBJECTIVE: To investigate the anti-platelet aggregation and antithrombotic effects in rats of iridoid glycosides extracted from Zhizi (FructusGardeniae). METHODS: The present study evaluated the antithrombotic activity of iridoid glycosides (IGs) in a rat model of carotid artery thrombosis. The effects on coagulation, such as thromboplastin time (APTT), thrombin time (TT) and prothrombin time (PT), and the effect on collagen-induced platelet aggregation in vivo were investigated. Rats were intragastrically administered IGs (50, 100 or 200 mg/ kg) twice daily for 3 days. RESULTS: IGs were shown for the first time to have an antithrombotic action through the inhibition of platelet aggregation, with little effect on the coagulation time of peripheral blood. Our results also showed that IGs may significantly and dose-dependently reduce arterial thrombus load in a model of carotid artery thrombosis and inhibit collagen-induced platelet aggregation in rats. IGs (100or 200 mg/kg) had no significant effect on APTT and PT, but did lengthenTT at a higher dose. CONCLUSION: These data, together with the previously reported neuroprotective effects of IGs in rats with cerebral ischemia, suggest that the antithrombotic action of IGs may potentially contribute to the treatment of cerebral ischemic diseases, including cerebral apoplexy.展开更多
文摘目的:建立胶原包裹挂线法家兔动脉血栓形成模型,并进行综合评价。方法:53只家兔随机分为正常组、挂线组、胶原包裹挂线组、胶原包裹挂线加阿司匹林处理组(阿司匹林组)、胶原包裹挂线加氯吡格雷处理组(氯吡格雷组)、胶原包裹挂线加阿司匹林和氯吡格雷处理(阿司匹林和氯吡格雷组)6组,分别进行相应的处理,观察在不同情况下组织病理学改变。用ELISA法(enzym link immunology assay,ELISA)检测1,6-二磷酸果糖二钠盐(D-fructose-1,6-diphosphate trisodium salt octahydrate,FDP)、D-二聚体(D-dimer)和组织因子(tissue factor,TF)。结果:组织病理学检查发现胶原包裹挂线组较挂线组血栓形成明显,血管内弹力膜损伤严重,用阿司匹林及氯吡格雷干预后,动脉血栓有大部分软化、溶解、吸收;胶原包裹挂线组与正常组、挂线组相比较,血栓湿重、干重、D-dimer、FDP及TF明显增高(P<0.01);3组药物干预后血栓湿重、干重及D-dimer、FDP和TF血浆水平均显著降低(P<0.01);与阿司匹林组、氯吡格雷组相比较,阿司匹林加氯吡格雷组能显著降低血栓湿重、干重、D-dimer和FDP水平(P<0.01);与阿司匹林组比较,阿司匹林加氯吡格雷组TF水平明显降低(P<0.05)。结论:胶原包裹挂线法动脉血栓模型明显优于单挂线法,且直观可靠、重复性好、成功率高,可反映抗栓药的药效,是一个理想的研究动脉血栓形成的动物模型。
文摘目的研究益气活血风静胶囊对大鼠血栓形成模型的影响。方法取SD大鼠,随机分为空白对照组、脑心通组和益气活血风静胶囊高、中、低剂量组,灌胃给药28天后,造大鼠动静脉旁路血栓形成模型,测定血栓湿重及干重,比较各试验组与空白组的差异,统计方法采用t检验。结果益气活血风静胶囊高、中、低剂量组均能明显降低血栓的湿重(P<0.01 or P<0.05),高、中剂量组能明显降低血栓的干重(P<0.01 or P<0.05)。结论益气活血风静胶囊对大鼠血栓形成有明显抑制作用。
文摘Objective: To study the pharmacokinetics of native r SAK in rabbit's femoral artery thrombosis model, the “lytic circle' method was used to determine plasma levels of r SAK. Methods: Thirty New Zealand rabbits were randomly assigned to the control (saline 10 ml, 30 min), r SAK low dose (0.25 mg/kg, 30 min), medial dose (0.50 mg/kg, 30 min), high dose (1.00 mg/kg, 30 min), single bolus (0.50 mg/kg, 2 min) and conjunctive therapy (initiated with heparin 200 U/kg, followed by infusion of r SAK 0.50 mg/kg for 30 min, and subsequently infused heparin 50 U/(kg·h) to endpoint) groups. The right femoral artery thrombosis model in rabbit was made by balloon injury, then the thrombolytic agents were infused through parallel ear vein and the blood samples were collected pre thrombolysis and at different time post thrombolysis to determine the plasma levels of r SAK by “lytic circle' method, the plasma levels of r SAK were processed by pharmacokinetic computing procedure to fit the model. Results: The plasma levels of r SAK and the diameters of lytic circles showed a pretty good linear correlation under the scope of 2.0×10 4 2.0×10 6 U/L, and the averaged recycle rate was (96.05±11.35)%(RSD =±11.82%).All peak concentration time in each infusion group was 30 min, and the peak concentrations positively correlated with the doses administrated in infusion groups(r=0.999 98, P <0.000 1). In single bolus group, Peak concentration time was 2 min, and the peak concentration reached (5.16±1.02) mg/L, which was significant higher than that in the same dose r SAK infusion group ( P <0.01). In conjunctive therapy group, the peak concentration showed no significant difference from that in the same dose r SAK infusion group ( P >0.05). The plasma levels of r SAK fit in two compartment model as processed by pharmacokinetic computing procedure in each group. Conclusion: The “lytic circle' method is a simple, practical and reliable method to determine the plasma level of r SAK, and the pharmacokinetics of native r SAK infusion fits in two compartment model in rabbit's femoral artery thrombosis model.
文摘Objective：To study the expression changes of matrix metal loproteinases （MMPs） in traumatic deep vein thrombosis （TDVT） in a rat model with the aid of gene chip technology and to explore the roles of MMPs in TDVT.Methods：Totally 150 Sprague Dawley rats were randomly divided into control group （n=10） and model group （n=140）. Rat models of TDVT were established by clamping the femoral vein and fixing the bilateral hind limbs. Then fixation of the hip spica with plaster bandage was conducted.According to the observation phases and/or biological situations of the femoral vein thrombosis, the model rats were further divided into 7 groups. Vascular tissues were obtained from each group through noninvasive incision into the femoral vein at corresponding time points. We adopted the Trizoi one-step method for total RNA extraction,Affymetrix RAT 230 2.0 array for detection of RNA expressions and fold change （FC） analysis for changes of differential expressions of MMPs in each group. The main outcome parameters measured included expressions of MMP-2,MMP-3, MMP-7, MMP-8, MMP-9, MMP-10, MMP-11,MMP- 12, MMP-13, MMP- 14, MMP- 16, MMP-23 and MMP-24. Gene array data of these MMPs were analyzed by the Affymetrix Microarray Analysis software （Version 5.0）.Results：FC analysis showed differential expressions of MMPs in each group during the course of TDVT. At the initial period of thrombosis, MMP-2, MMP-3, MMP-7,MMP-8, MMP-9, MMP- 10, MMP-11, and MMP-24 had significantly high expression, while MMP-12, MMP-13,MMP-14, MMP-16 and MMP-23 had relatively low expression. MMPs were all highly expressed at the peak time of thrombosis. In the process of thrombus resolution,MMP-2, MMP-10, MMP-16 and MMP-24 have relatively low expression, while MMP-12, MMP-13, MMP-14,MMP-16 and MMP-23 have significantly high expression.Conclusion：MMPs may affect the process of TDVT through transcription regulation of the fibrinolysis-anti-fibrinolytic system during the course of thrombosis and thrombus resolution.
文摘OBJECTIVE: To investigate the anti-platelet aggregation and antithrombotic effects in rats of iridoid glycosides extracted from Zhizi (FructusGardeniae). METHODS: The present study evaluated the antithrombotic activity of iridoid glycosides (IGs) in a rat model of carotid artery thrombosis. The effects on coagulation, such as thromboplastin time (APTT), thrombin time (TT) and prothrombin time (PT), and the effect on collagen-induced platelet aggregation in vivo were investigated. Rats were intragastrically administered IGs (50, 100 or 200 mg/ kg) twice daily for 3 days. RESULTS: IGs were shown for the first time to have an antithrombotic action through the inhibition of platelet aggregation, with little effect on the coagulation time of peripheral blood. Our results also showed that IGs may significantly and dose-dependently reduce arterial thrombus load in a model of carotid artery thrombosis and inhibit collagen-induced platelet aggregation in rats. IGs (100or 200 mg/kg) had no significant effect on APTT and PT, but did lengthenTT at a higher dose. CONCLUSION: These data, together with the previously reported neuroprotective effects of IGs in rats with cerebral ischemia, suggest that the antithrombotic action of IGs may potentially contribute to the treatment of cerebral ischemic diseases, including cerebral apoplexy.
