芦荟大黄素对兔髂动脉损伤后内膜增生及血管重塑反应的在体研究

目的探讨芦荟大黄素对兔髂动脉损伤后内膜增生及血管重塑反应的影响。方法将14只纯种日本大耳白兔随机分为髂动脉球囊损伤用药组和非用药组,于手术前后分别给予芦荟大黄素〔40mg/(kg·d)×7d〕或等体积的生理盐水肌肉注射。14d后,取出左右髂总动脉,用计算机图像分析仪对其切片进行形态测量分析。结果用药组与未用药组比较,最大内膜厚度均值稍低〔(0.043±0.013)mm比(0.048±0.015)mm,P>0.05〕;新生内膜面积减小〔(0.025±0.005)mm2比(0.035±0.008)mm2,P<0.05〕;管腔面积增大〔(0.098±0.011)mm2比(0.08±0.013)mm2,P<0.05〕;管腔面积和内膜面积及外弹力膜面积之比升高(用药组为0.793±0.036、0.617±0.054;非用药组为0.699±0.063、0.538±0.057,P<0.05)。用药组与未用药组比较,外弹力膜面积稍增大〔(0.160±0.010)mm2比(0.152±0.01)mm2,P<0.2〕,但与未受损伤的正常髂动脉外弹力膜面积〔(0.134±0.023)mm2〕相比,差异有统计学意义(P<0.05)。结论芦荟大黄素可以抑制球囊损伤后内膜的增生,并有可能对损伤后的血管重塑产生有利的影响。     

重组水蛭素局部治疗兔髂总动脉球囊扩张术后内膜增殖和管腔狭窄

目的　探讨重组水蛭素经多孔球囊导管局部治疗对兔髂总动脉球囊扩张术后内膜增殖和管腔狭窄的影响 .方法　 2 4只纯种日本大耳白兔随机分成对照组 (n=12 )和重组水蛭素局部治疗组 (n=12 ) ,采用兔髂总动脉球囊扩张术后内膜增殖和管腔狭窄动物模型 ,治疗组经多孔球囊导管于球囊扩张局部在 2个大气压下给予重组水蛭素 (13.8× 10 6抗凝血酶单位· g- 1 ) 1mg· kg- 1 ,对照组给予生理盐水 .术后 2 wk和4wk复查血管造影 ,术后 4wk取髂总动脉标本行 HE染色、Masson三色染色、平滑肌肌动蛋白 (α- actin)免疫组织化学染色和增殖细胞核抗原 (PCNA)免疫组织化学染色 ,并进行计算机图像分析 .结果　治疗组术后 2 wk和 4wk平均髂总动脉直径均较对照组显著扩大 [2 wk (86± 5 ) % vs(5 6±10 ) % ,P <0 .0 1;4wk (77± 13) % vs (5 6± 10 ) % ,P <0 .0 1],术后 2 wk和 4wk平均髂总动脉面积亦显著增加 .术后 4wk治疗组球囊扩张血管管腔面积较对照组显著增加[(37± 5 ) % vs (16± 5 ) % ,P <0 .0 1],管壁面积显著减少[(6 3± 5 ) % vs(84± 5 ) % ,P<0 .0 1],其中主要是内膜面积的减少 [(7± 1) % vs (38± 10 ) % ,P<0 .0 1].术后 4wk治疗组球囊扩张血管壁 α- actin和 PCNA免疫组化染色阳性细胞均较对照组明显减     

复方丹参滴丸对兔髂动脉损伤后内膜增殖的影响

目的 :探讨复方丹参滴丸对高脂血症兔髂动脉内皮剥脱后内膜增殖的影响。方法 :体重 2 0～ 2 3kg的雄性日本大耳白兔 2 0只 ,随机分为对照组 (n =10 )、复方丹参滴丸组 (n =10 ) ,高脂喂养两周后 ,行右髂动脉球囊内皮剥脱术。从术前 3天天始 ,治疗组饲以复方丹参滴丸 (30 0mg·只 - 1 ·天 - 1 )。术后 4周 ,取损伤侧髂动脉行病理形态学分析及增殖细胞核抗原 (Prolif eratingcellnuclearantigen ,PCNA)免疫组化检测。结果 :复方丹参滴丸组新生内膜面积和内膜增殖细胞核抗原阳性细胞率均小于对照组 (P <0 0 5 ) ,而管腔面积大于对照组 (P <0 0 5 ) ,两组同期血脂水平无显著差异 (P >0 0 5 )。结论 :复方丹参滴丸能抑制动脉损伤后平滑肌细胞增殖 ,有缓解内膜增生 ,减轻实验性动脉再狭窄的作用 ,该作用不依赖对血脂的调节。     

内皮祖细胞移植修复大鼠颈总动脉内皮损伤

 [目的]探讨内皮祖细胞修复动脉内皮损伤的作用.[方法]建立大鼠颈总动脉内皮损伤模型,16只大鼠随机等分为内皮祖细胞移植组和对照组.体外诱导大鼠外周血单个核细胞为内皮祖细胞.在动脉损伤后,将5-溴脱氧尿苷标记的内皮祖细胞注入损伤动脉段,14 d后取损伤动脉段和对侧正常动脉段.采用病理学方法、免疫组织化学和图像分析技术评价内皮祖细胞的修复效果.[结果]内皮祖细胞移植组的损伤动脉段5-溴脱氧尿苷免疫组化为阳性.内皮祖细胞移植组损伤动脉段的新生内膜厚度较对照组明显减轻（43.5±5.5）μm vs（90.7±12.7）μm,P＜0.05;内皮祖细胞移植组的再内皮化程度明显高于对照组77.8%±0.1%vs52.2%±0.1%,P＜0.05.[结论]内皮祖细胞具有修复动脉内皮细胞损伤的作用,内皮祖细胞可作为心血管疾病细胞移植疗法的种子细胞.     

钠氢交换抑制剂对兔髂动脉球囊损伤后血管狭窄干预作用研究

目的:建立兔髂动脉球囊损伤模型,观察钠氢交换(NHE)抑制剂(Amiloride)对血管狭窄的干预作用。方法:32只新西兰白兔随机分为干预组(12只)、对照组(10只)及假术组(10只);建立兔髂动脉球囊损伤模型。干预组于术前3d予Amiloride[5mg(kg·d)]、对照组以相同剂量NS腹腔注射,至术后28d取材;取髂动脉行苏木精伊红染色、αactin免疫组化染色、Masson三色染色,观察血管管腔、中膜与内膜面积变化、平滑肌细胞增殖、细胞外基质(ECM)变化情况。结果:兔髂动脉球囊损伤后4周出现明显管腔狭窄,新生内膜生长,平滑肌层增生;干预组、对照组、假术组髂动脉管腔面积各为(0.91±0.23)mm2、(0.68±0.19)mm2、(1.08±0.17)mm2,F=7.631,P<0.01;新生内膜面积各为(0.27±0.15)mm2、(0.67±0.24)mm2、(0.05±0.03)mm2,F=36.974,P<0.01;内膜中膜面积比各为1.21±0.24、1.39±0.26、0.15±0.08,F=7.562,P<0.01;经Amiloride干预后管腔面积明显增大,内膜面积显著下降,内膜中膜面积比下降。干预组与对照组内膜比较,αactin染色阳性面积减小[(4164.15±1788.37)μm2vs.(16328.31±6220.27)μm2,P<0.01];Masson染色绿色面积下降[(8910.62±7041.62)μm2vs(333558.76±7290.17)μm2,P<0.01],提示干预组内膜平滑肌增生及ECM增生均减轻。结论:Amiloride可抑制球囊损伤兔髂动脉所致血管管腔缩小、内膜增生、分泌ECM,减轻血管狭窄,提示其可能在预防经皮冠状动脉内成形术术后血管再狭窄起一定作用。     

188Re血管内照射对新西兰白兔损伤血管内膜增生的影响

目的 研究188Re血管内照射对新西兰白兔损伤血管内膜增生的影响,探讨188Re血管内照射对预防再狭窄的可行性及作用.方法 60只新西兰白兔随机分为对照组(n=30)和照射组(n=30),均行腹主动脉球囊内皮拉伤术.照射组球囊损伤内膜后行188Re照射治疗,管腔下0.5mm处累计吸收剂量为15Gy;对照组则不行血管内照射.分别于术后1、3、6周处死动物,取病理组织学标本进行分析.结果 与对照组对比,照射组第3、6周的新生内膜面积明显减小(2.11±0.17mm2 vs 3.02±0.71mm2,P=0.003;2.63±0.84mm2 vs 3.80±0.99mm2,P=0.023),管腔面积明显增加(5.87±0.57mm2 vs 4.96±0.64mm2,P=0.009;4.74±0.59mm2 vs 4.16±0.40mm2,P=0.037),管腔周径明显增大(4.61±0.78mm vs 3.64±0.93mm,P=0.040;3.85±0.65mm vs 3.12±0.56mm,P=0.031),管腔狭窄程度明显降低(23.04±4.85mm2 vs 33.44±6.47mm2,P=0.003;30.82±7.18mm2 vs 41.46±10.95mm2,P=0.038).结论 188Re血管腔内照射能有效抑制损伤血管的新生内膜增生,改善血管重构,为预防临床PTCA术后再狭窄提供了有力的实验依据.     

睾酮对损伤的血管组织血管细胞黏附分子-1的表达和内膜增殖的影响

目的 观察内外源性睾酮对球囊损伤的血管组织血管细胞黏附分子-1(VCAM-1)的表达和内膜增殖的影响.方法 30只雄性家兔随机等分为替代组、单纯去势组和对照组,前两组动物行去势术(切除双侧睾丸和附睾),后一组动物行相应假手术;均于去势术后2周行右侧髂动脉内皮剥脱术,替代组同时给予十一酸睾酮.脱内皮术后2周将动物处死,取损伤血管段,应用免疫组织化学法观察血管组织VCAM-1的表达、应用HE染色观察血管病理形态的变化.结果 与单纯去势组和对照组相比,替代组脱内皮术后2周损伤血管组织VCAM-1表达明显增强[(0.3465±0.0084)vs(0.3109±0.0056)及(0.3180±0.0099),分别P＜0.001和0.01],损伤血管内膜面积和内膜/中膜面积比值明显增大[(1.65±0.39)mm2 vs(0.65±0.18)mm2及(0.75±0.21)mm2,(0.92±0.20)vs(0.38±0.07)及(0.43±0.09),均P＜0.01],而前两组之间上述指标相比差异无显著性栽(均P＞0.05).结论 雄性兔去势后补充该实验剂量的外源性睾酮可促进损伤的血管组织表达VCAM-1和促进内膜增生,而内源性睾酮水平短时降低对损伤血管组织VCAM-1的表达和内膜增生无影响.     

雷红冲剂对兔动脉球囊损伤术后狭窄影响的实验研究

目的探讨雷红冲剂对兔动脉球囊损伤术后狭窄的干预作用。方法健康新西兰大白兔40只,随机分为假手术组、模型组、雷红冲剂低剂量组、雷红冲剂高剂量组,每组10只。运用球囊原位扩张、拉伤致兔髂动脉损伤建立经皮冠状动脉腔内血管成形术(PTCA)后内皮损伤模型。观察雷红冲剂对损伤血管内膜及管腔内径的影响。结果球囊损伤侧血管均显示弥漫性内膜增厚,光镜下形态学观察增生内膜以增殖的梭形平滑肌细胞为主。与假手术组比较,模型组管腔面积明显缩小(P<0.001),内膜、中膜显著增生(P<0.001);与模型组比较,雷红冲剂低、高剂量组管腔面积及内膜增生程度均明显改善(P<0.001),两组比较高剂量组优于低剂量组。与模型组比较雷红方对增殖细胞核抗原(PCNA)、血管内皮生长因子(VEGF)、细胞周期蛋白依赖性激酶2(CDK2)表达有减少的趋势(P<0.01),对细胞周期调控蛋白(p21cip1)表达有升高趋势(P<0.01)。结论雷红冲剂可抑制损伤血管的内膜增生,对兔髂动脉球囊损伤术后狭窄有不同程度的抑制作用。     

左旋精氨酸对家兔髂动脉球囊损伤后内膜增生的影响

目的　探讨左旋精氨酸对动脉球囊损伤后内膜增生的影响。方法　 36只健康家兔随机分成球囊损伤组 (A组 ,n =12 )、球囊损伤 +L -Arg组 (B组 ,n =12 )、假手术组 (S组 ,n =12 ) ,每组再随机分成术后 7天处死和术后 2 8天处死两个亚组 (n =6 )。A、B组行右髂动脉球囊损伤术。B组从术前 3天至处死时经静脉注射L -Arg 95 0mg·Kg-1/d。组织切片行Wergert弹力纤维染色。行形态学观察及形态计量分析。结果　A、B组皆有新生内膜形成 ,A2 8组较B2 8组及S组内膜面积、内膜面积 /中膜面积显著增大 ,管腔面积显著减小 (P <0 .0 1)。结论　应用L -Arg可抑制动脉球囊损伤后内膜的增生     

粒细胞集落刺激因子对兔髂动脉球囊损伤后内膜修复和增生的影响

目的探讨重组人粒细胞集落刺激因子（rhG-CSF）对兔髂动脉球囊损伤后再内皮化和内膜增生的影响。方法将制模成功的56只新西兰大白兔随机分为2组,观察组皮下注射rhG-CSF 30μg/（kg.d）,7 d后经颈动脉行左髂总动脉球囊导管拉伤,术后14 d用伊文氏蓝染色、HE染色、免疫组织化学方法,观察血管再内皮化、新生内膜增厚及细胞增殖情况;对照组用生理盐水代替rhG-CS,其余同观察组。结果造模14 d后,观察组的内膜再生面积（An）和内膜损伤总面积（At）比值明显高于对照组[（68.60±6.25）%vs（46.60±3.36）%,P〈0.01];内膜厚度（Ti）/中膜厚度（Tm）比值明显低于对照组（1.53±0.14 vs 2.43±0.15,P〈0.01）。结论内皮前体细胞动员剂rhG-CSF能显著促进血管损伤后内皮化,有效抑制了支架内再狭窄的发生。     

Relationship of vascular remodeling and restenosis after interventional therapy: an experimental study on rabbit atherosclerotic iliac artery model

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厄贝沙坦抑制兔动脉球囊损伤后再狭窄的作用及机理研究

目的观察国产血管紧张素1型受体拮抗剂厄贝沙坦抑制兔颈动脉球囊损伤后再狭窄(RS)的作用,探讨 RS 可能的机理。方法将48只大耳白兔随机分为实验7、14、28 d 组并各设对照组(每组8只),以球囊损伤左颈总动脉,建立再狭窄模型。术后7、14、28 d 不同时点取材。实验组术前3 d 喂饲厄贝沙坦(35 mg/kg)至处死。病理 HE 染色观察动脉壁内、中膜面积、管腔面积;免疫组化法测定核因子-κB(NF-κB)、核增殖抗原(PCNA)核易位阳性细胞率;实时荧光定量聚合酶链反应(PCR)测定κB抑制蛋白(I-κB)、单核细胞趋化蛋白 mRNA 表达。结果厄贝沙坦实验组与对照组相比,术后7 d 时明显抑制内膜的增生(0.34 mm~2±0.15 mm~2 vs 1.05 mm~2±0.38 mm~2,P<0.05),28 d 时管腔面积明显较大(4.25 mm~2±0.29 mm~2 vs 2.56 mm~2±1.02 mm~2,P<0.05)。术后7 d 时厄贝沙坦明显抑制 NF-κB p65核易位(P<0.05)和 PCNA 的表达(P<0.05)。术后7 d 时厄贝沙坦实验组 I-κB mRNA 含量明显较低(7.2拷贝/μl±0.9拷贝/μl vs 15.6拷贝/μl±0.7拷贝/μl,P<0.05),厄贝沙坦实验组在各时相点均明显抑制 MCP-1 mRNA 的表达(P<0.05)。结论厄贝沙坦通过抑制NF-κB的激活而调控 MCP-1、PCNA 的表达,有效抑制再狭窄的发生发展。     

四逆汤对兔髂动脉球囊损伤后血管狭窄和氧化应激的影响

目的通过球囊损伤兔髂动脉造成动脉损伤的动物模型,观察四逆汤对损伤后动脉内膜的保护和修复作用,以及对氧化应激的影响。方法雄性新西兰大白兔24只,随机分为对照组、模型组、四逆汤治疗组(四逆汤组),每组8只。对照组兔给予普通饲料,模型组、四逆汤组兔给予高脂饮食。饲养2周后模型组、四逆汤组兔行髂动脉内膜剥脱术。4周后,通过电镜观察髂动脉内膜的病变情况,光镜观察血管的病理变化,并检测血清超氧化物歧化酶(SOD)活性、丙二醛(MDA)和血脂的水平。结果扫描电镜发现,对照组兔髂动脉内膜内皮细胞形态正常,排列整齐;模型组可见内皮细胞脱落,内皮细胞增生形态各异,内皮下胶原纤维暴露;四逆汤组内皮细胞排列基本正常。光镜发现,对照组兔髂动脉管腔和管壁厚度正常,管壁光滑;模型组管壁明显增厚,管腔明显狭窄,内膜增厚;治疗组血管病变程度明显减轻。四逆汤可明显改善血脂的紊乱。对照组兔血清SOD活性明显高于四逆汤组和模型组,四逆汤组SOD活性又明显高于模型组。对照组兔血清MDA水平明显低于四逆汤组和模型组,四逆汤组MDA水平又明显低于模型组。结论四逆汤可减轻兔髂动脉剥脱术后的内膜增生和血管狭窄,其机制可能与抑制髂动脉剥脱术后兔的脂质过氧化反应、增强SOD活性有关。     

Effects of granulocyte-macrophage colony stimulating factor on the repair of vessel intima damaged by balloon

Background The dysfunction of vascular endothelial cells plays a key role in starting and facilitating restenosis. The acceleration of intima repair and the recovery of endothelial function would reduce the restenosis rate. This study was undertaken to assess the effect of granulocyte-macrophage colony stimulating factor (GM-CSF) on the repair of damaged iliac arteries.Methods Twenty-four male New Zealand white rabbits undergoing primary iliac artery deendothelialization were randomly divided into two groups (GM-CSF group and control group). The GM-CSF group received a subcutaneous injection of GM-CSF ［10 μg·kg（-1）·d（-1）］, and the control group was given a subcutaneous injection of equivalent saline. The iliac arteries of all animals were damaged by balloon after 7 days. The levels of nitric oxide (NO) were detected before, 1 week, 2 weeks and 4 weeks after angioplasty. The repair and hyperplasia of the intima were observed microscopically and the indices of stenosis were evaluated by computerized planimetry after 4 weeks of angioplasty.Results The NO levels of the GM-CSF group were higher than those of the control group 2 weeks and 4 weeks after angioplasty ［(91.92±11.57) μmol/L vs. (81.67±12.18) μmol/L; (97.67±10.13) μmol/L vs. (83.16±12.64) μmol/L］. Four weeks after balloon damage, histological examination showed that neointima formation, vascular smooth muscle cells and fibrous tissue of the GM-CSF group were less than those of the control group. The endothelium of the GM-CSF group was more integrated, and stenosis of lumen was slighter than that of the control group. Morphometry showed the lumen area of the GM-CSF group was larger than that of the control group ［(1.27±0.31) mm2 vs. (0.92±0.24) mm2］, the neointimal area and percent of intima hyperplasia were significantly smaller than those of the control group ［(0.85±0.34) mm2 vs. (1.18±0.38) mm2; (40±7)% vs. (55±6)%］.Conclusion GM-CSF could facilitate the repair of the intima, reduce neointima formation, better the function of the endothelium, and decrease the rate of restenosis.     

苯那普利对兔髂动脉球囊损伤后内膜增生的影响

为了探讨髂动脉内膜剥脱术后再狭窄的预防，将２８只兔随机分为苯那普利组和对照组，行右髂动脉内膜球囊剥脱术。术后３０天处死动物，作病理形态学检查及流式细胞术测定。结果表明，苯那普利组损伤血管内膜厚度小于对照组，而管腔面积大于对照组（Ｐ均＜０．００１）。治疗组血管壁细胞增殖期细胞数明显低于对照组（Ｐ均＜０．００１）。提示，苯那普利能抑制动脉球囊损伤后血管平滑肌细胞增殖，减轻内膜增生。     

Effects of granulocyte colony-stimulating factor on repair of injured canine arteries

Background Endothelial progenitor cells （EPCs） derived from bone marrow may differentiate into endothelial cells and participate in endothelial repair. These cells can be mobilized into peripheral blood by cytokines, including granulocyte colony-stimulating factor （G-CSF）. In the present study, we investigated the effects of G-CSF on neointimal formation and restenosis in a canine model of arterial balloon injury.
Methods Sixteen male beagle dogs were injected subcutaneously with 20 μg·kg^-1·d^-1 recombinant human G-CSF （n=8） or normal saline （n=8） for 1 week. On the fifth day of treatment, the dogs underwent renal arterial angioplasty. At 8 weeks after arterial balloon injury, angiographic observations were made and injured arteries were processed for morphometric analysis of neointimal formation.
Results Peripheral white blood cell counts were increased by 3.34-fold compared to baseline on the fifth day of administration of G-CSF. Angiographies revealed that one stenosis had occurred among the eight injured renal arteries from dogs treated with G-CSF, whereas all injured renal arteries from dogs treated with normal saline remained patent. The mean extent of stenosis among injured arteries was 18.3%±17.9% in the G-CSF treated group compared to 12.5%±7.6% in the saline treated control group （P=0.10）. G-CSF treatment slightly increased neointimal thickness （0.42±0.15 mm vs 0.25±0.06 mm, P=-0.08） with an intima to media ratio of 0.83±0.49 vs 0.54±0.18 （P=0.11）.
Conclusions G-CSF treatment does not attenuate neointimal hyperplasia and restenosis formation in a canine model of renal arterial injury, suggesting that the therapeutic strategy for preventing restenosis by stem cell mobilization should be investigated further.     

The experimental study of xue guan tong (血?通) on preventing restenosis after percutaneous transluminal angioplasty

The effect of Xue Guan Tong (XGT) granule in preventing restenosis of atherosclerotic iliac artery after percutaneous transluminal angioplasty (PTA) in rabbits was studied. Forty-two purebred New Zealand rabbits with their endothelium of iliac arteries denuded and fed with high cholesterol diet for six weeks to form the model of atherosclerotic stenosis. After PTA, the high cholesterol diet was stopped immediately and they were divided into 3 groups randomly, the XGT group, the lovastatin group and the control group. Arterial angiograph and pathological observation were carried out 4 weeks after PTA. The results showed that (1) The luminal diameter of artery was 1.82±0.46mm in the XGT group, 0.96±0.71mm in the lovastatin group and 0.71±0.53mm in the control group. The former one was larger than the latter two significantly (P<0.01). (2) Thickness of intima of artery was 0.27±0.40mm in the XGT group, it was thinner than those in the other two groups (0.43±0.04mm in the lovastatin group and 0.48±0.10mm in the control group). (3) In XGT group, the smooth muscle cells (SMCs) contained fewer organelles, more muscular fibers and were well differentiated than in the other two groups. The conclusion was XGT has the preventive effect on post-PTA arterial restenosis in rabbits.     

粒细胞-巨噬细胞集落刺激因子对正常参考血管重构的影响

目的 观察血管成形术后,病变近端正常参考血管重构的发生以及与病变部位血管重构的关系,并观察了粒细胞-巨噬细胞集落刺激因子(GM-CSF)对血管重构的影响.方法 健康新西兰大白兔28只随机分为GM-CSF组和单纯损伤组.GM-CSF组皮下注射GM-CSF10 μg·kg-1·d-1,单纯损伤组皮下注射同等量生理盐水.7 d后球囊扩张损伤髂动脉.分别于术前、术后4周耳缘静脉采血检测一氧化氮(NO)浓度;4周后提取损伤动脉标本,观察内膜增生情况并测定病理形态学参数.结果 术后4周GM-CSF组N0浓度(98±10)μmol/L高于单纯损伤组(83±12)μLmol/L.单纯损伤组球囊损伤处血管残余管腔面积(LA)小于GM-CSF组[(0.87±0.40)mm2 vs(1.34±0.52)mm2,P＜0.05],损伤处内膜+中膜面积(I+M)大于单纯损伤组[(2.62±0.48)mm2 vs(2.26±0.43)mm2,P＜0.05],两组损伤处外弹力膜环绕面积(EELA)差异无统计学意义[(3.48±0.80)min2 vs(3.60±0.91)mm2,P＞0.05].单纯损伤组参考血管LA小于GM-CSF组[(1.60±0.48)mm2 vs(1.99±0.54)mm2,P＜0.05],两组参考血管I+M无明显差异,LA与I+M之间不存在相关性,而参考血管EELA与LA及I+M之间有明显的相关性(r=0.91,P＜0.001;r=0.685,P＜0.001).两组参考血管LA、EELA与损伤处血管LA、EELA也明显相关(r=0.919,P＜0.001;r=0.909,P＜0.001).结论 血管重构不仅发生在病变血管,同时也发生在近端参考血管.GM-CSF可以促进受损内皮细胞修复,改善负性血管重构.     

Experimental study of Hirudo andSalvia miltiorrhiza on smooth muscle cell hyperplasia following balloon angioplasty

Percutaneoustransluminalcoronaryangioplasty(PTCA)isanimprotantmethodtotreatcoronaryarterystenosisandmyocardialischemia.ButtheapplyingofPTCAwererestrictedbythecausingofrestenosisfollowingangioplasty(').Sofartherearenoeffectivewaytopreventrestenosis.TOprobetheeffectoftraditionalChinesemedicineonrestenosis,theHirudoandSalviamiltiorrhiza(SM)werestudiedinthisexperiment,Theeffectsofthetwomedicinesonhyperplasiaofvascularsmoothmusclecells(VSMCs)wereobserved.'GrantssupportedbyBeijingNaturalSci…