Name: procedure for human saphenous veins ex vivo perfusion and external reinforcement
Uploaded: 2014-10-01T15:00:00
Description: Watch this Scientific Journal Video about Procedure for Human Saphenous Veins Ex Vivo Perfusion and External Reinforcement at JoVE.com

这项工作是从SNF [31003A-138528]，该Octav和马塞拉Botnar基金会，诺华基金会和艾玛Muschamp基金会的资助。我们感谢马丁Lambelet，和让 - 克里斯托夫施特勒的出色技术援助。

洛桑大学的伦理委员会批准了试验，这是按照1975年赫尔辛基宣言提出的原则，修订于1983年为使用人体组织。 1，人类大隐静脉丰收<ol><li>从发生下肢搭桥手术缺血患者获得非曲张的大隐静脉的盈余部分。在手术室，消毒与碘溶液的整个腿和悬垂性，患者从腹股沟到脚露出的腿。 </li><li>请从腹股沟到膝盖正中切口（在离开中断的皮肤部分）。 </li><li>收获大隐静脉与周围组织?...

<ol>
	<li>Sal Go, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Executive+summary:+heart+disease+and+stroke+statistics--2014+update:+a+report+from+the+american+heart+association.">Executive summary: heart disease and stroke statistics--2014 update: a report from the american heart association.</a> Circulation. 129, 399-410 (2014).</li><li>Sal Conte, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Results+of+PREVENT+III:+a+multicenter,+randomized+trial+of+edifoligide+for+the+prevention+of+vein+graft+failure+in+lower+extremity+bypass+surgery.">Results of PREVENT III: a multicenter, randomized trial of edifoligide for the prevention of vein graft failure in lower extremity bypass surgery.</a> Journal of Vascular Surgery. 43, 742-751 (2006).</li><li>Yu, P., Nguyen, B. 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Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=On+the+biology+of+saphenous+vein+grafts+fitted+with+external+synthetic+sheaths+and+stents.">On the biology of saphenous vein grafts fitted with external synthetic sheaths and stents.</a> Biomaterials. 28, 895-908 (2007).</li><li>Zilla, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Constrictive+external+nitinol+meshes+inhibit+vein+graft+intimal+hyperplasia+in+nonhuman+primates.">Constrictive external nitinol meshes inhibit vein graft intimal hyperplasia in nonhuman primates.</a> The Journal of Thoracic and Cardiovascular Surgery. 136, 717-725 (2008).</li><li>Zilla, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Utilization+of+shape+memory+in+external+vein-graft+meshes+allows+extreme+diameter+constriction+for+suppressing+intimal+hyperplasia:+a+non-human+primate+study.">Utilization of shape memory in external vein-graft meshes allows extreme diameter constriction for suppressing intimal hyperplasia: a non-human primate study.</a> Journal of Vascular Surgery. 49, 1532-1542 (2009).</li><li>Yeoman, M. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+constitutive+model+for+the+warp-weft+coupled+non-linear+behavior+of+knitted+biomedical+textiles.">A constitutive model for the warp-weft coupled non-linear behavior of knitted biomedical textiles.</a> Biomaterials. 31, 8484-8493 (2010).</li><li>Longchamp, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+use+of+external+mesh+reinforcement+to+reduce+intimal+hyperplasia+and+preserve+the+structure+of+human+saphenous+veins.">The use of external mesh reinforcement to reduce intimal hyperplasia and preserve the structure of human saphenous veins.</a> Biomaterials. 35, 2588-2599 (2014).</li><li>Saucy, F., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ex+vivo+pulsatile+perfusion+of+human+saphenous+veins+induces+intimal+hyperplasia+and+increased+levels+of+the+plasminogen+activator+inhibitor+1.">Ex vivo pulsatile perfusion of human saphenous veins induces intimal hyperplasia and increased levels of the plasminogen activator inhibitor 1.</a> European Surgical Research. Europaische Chirurgische Forschung. Recherches Chirurgicales Europeennes. 45, 50-59 (2010).</li><li>Dubuis, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Atorvastatin-loaded+hydrogel+affects+the+smooth+muscle+cells+of+human+veins.">Atorvastatin-loaded hydrogel affects the smooth muscle cells of human veins.</a> The Journal of pharmacology and experimental. 347, 574-581 (2013).</li><li>Deglise, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Increased+connexin43+expression+in+human+saphenous+veins+in+culture+is+associated+with+intimal+hyperplasia.">Increased connexin43 expression in human saphenous veins in culture is associated with intimal hyperplasia.</a> Journal of Vascular Surgery. 41, 1043-1052 (2005).</li><li>Muto, A., Model, L., Ziegler, K., Eghbalieh, S. D., Dardik, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanisms+of+vein+graft+adaptation+to+the+arterial+circulation:+insights+into+the+neointimal+algorithm+and+management+strategies.">Mechanisms of vein graft adaptation to the arterial circulation: insights into the neointimal algorithm and management strategies.</a> Circulation Journal : Official Journal of the Japanese Circulation Society. 74, 1501-1512 (2010).</li><li>Tao, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+simplified+murine+intimal+hyperplasia+model+founded+on+a+focal+carotid+stenosis.">A simplified murine intimal hyperplasia model founded on a focal carotid stenosis.</a> The American Journal of Pathology. 182, 277-287 (2013).</li><li>Berard, X., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Salvage+treatment+for+venous+aneurysm+complicating+vascular+access+arteriovenous+fistula:+use+of+an+exoprosthesis+to+reinforce+the+vein+after+aneurysmorrhaphy.">Salvage treatment for venous aneurysm complicating vascular access arteriovenous fistula: use of an exoprosthesis to reinforce the vein after aneurysmorrhaphy.</a> European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery. 40, 100-106 (2010).</li></ol>

这项研究揭示了体外静脉灌注系统（每股内含价值）在人类静脉进行大量的血流动力学研究。这个系统允许根据在没有通过体内循环细胞所释放的加重炎症和生长因子定义的血流动力学参数隐静脉灌注。因此，它提供了更好的理解涉及IH在人静脉移植物5,11,12,15的控制的基本途径。 可重复和可定量的血液动力学扰动体内限定。几个复杂的鼠显...

心血管疾病是发病率和死亡率在西方国家1的主要原因。尽管血管内治疗取得了进步，搭桥手术仍然是现代治疗的主体，从而五十多万元静脉移植在美国每年进行的。然而，尽管几十年的研究，下肢静脉移植30-60％范围内的最初几年，由于内膜增生（1H）2失败。机械力，特别是低切应力（SS）和高壁张力，关键是在这个增生反应3,4的启动和发展。为了解决这个问题，一个离体血管灌注系统（EVPS）中产生的学习，严格控制的血流动力学条件（压力和剪切应力），人隐静脉的行为下。在这项研究中，下列插入到动脉样循环，高压（平均= 100毫米汞柱）足以刺激prolif关合作和平滑肌细胞进入血管内膜层（1H）迁移。 哺乳动物的研究表明使用外部加固作为一种有效的方法来支持“静脉动脉化”，并抵消急性血液动力学改变静脉面临一次植入动脉周围环境。网状防止过 ​​度膨胀，增大的剪切应力，并降低了壁张力，因而IH 6-10。然而，潜在的机制和其适用于人类静脉改善旁路通畅性没有得到充分的表征。我们EVPS用于比较，在条件模拟的静脉面临一次插入动脉方案的改变（高剪切应力和压力），在外部大孔聚酯管状网的不存在和存在的大隐静脉的行为。防止病理性重构和IH，网格提供了其潜在的临床有效率11证据</sup&gt;。 这项研究1）引入体外控制下的压力和剪切应力2）人类隐静脉灌注模型显示，外部大孔涤纶网眼降低IH和提供了其潜在的临床应用至关重要的信息。

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			<td height="21" style="height:21px;width:453px;">Name</td>
			<td style="width:371px;">Company</td>
			<td style="width:145px;">Catalog Number</td>
			<td style="width:144px;">Comments</td>
		</tr>
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			<td height="21" style="height:21px;">RPMI 1640 - Glutamax</td>
			<td>Life Technologies</td>
			<td>61870-010</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;"><a name="RANGE!A3">Penicilline/Streptomycine/Fungizone</a></td>
			<td>Bioconcept</td>
			<td>4-02F00-H</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Dextran from Leuconostoc spp. 500 gr.</td>
			<td>Sigma-Aldrich</td>
			<td>31390</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Tampon PBS CHUV pH 7.1-7.3 1 lt.</td>
			<td>Laboratorium und Grosse Apotheke Dr. G. Bichsel AG</td>
			<td>100 0 324 00</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Cryosectionning embedding medium - Tissue-Tek OCT Compound</td>
			<td>Fisher Scientific</td>
			<td>14-373-65</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Silicon Tubing (Peroxide) L/S 16 (96400-16 ) - 7.5m</td>
			<td>Idex Health &#38; Science GMBH</td>
			<td>MF0037ST</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Y-splitter&#160;</td>
			<td>Idex Health &#38; Science GMBH</td>
			<td>Y-connector</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">35 mm Culture dish</td>
			<td>Sigma-Aldrich</td>
			<td>CLS430165-100EA</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">15 ml Falcon tube</td>
			<td>BD Bioscence</td>
			<td>352096</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">50 ml Falcon tube</td>
			<td>BD Bioscence</td>
			<td>352098</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Gearing pump - Reglo-Z</td>
			<td>Idex Health &#38; Science GMBH</td>
			<td>SM 895&#160;</td>
			<td>&#160;App-Nr 03736-00194</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Pump Head</td>
			<td>Idex Health &#38; Science GMBH</td>
			<td>MI0008&#160;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Monitoring Kit TRANSPAC IV</td>
			<td>icumedical</td>
			<td>011-0J736-01</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">20 mL Syringes</td>
			<td>B. Braun Medical SA</td>
			<td>4612041-02</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Etibon 3-0 FS-2</td>
			<td>Ethicon- Johnson&#38;Johnson</td>
			<td>EH7346H</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Mesh ProVena 6-8mm</td>
			<td>B. Braun Medical SA</td>
			<td>1105012-14</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">NaCl: Sodium Chlorure Solution perfusion 0.9% (100 ml)</td>
			<td>B. Braun Medical SA</td>
			<td>534534</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Masterflex L/S Standard Drive</td>
			<td>Cole-Parmer Instrument Co</td>
			<td>7521-10</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Acquisition card</td>
			<td>National Instruments</td>
			<td>PCI-6024 E</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Flowmeter module</td>
			<td>Transonic Systems Inc.</td>
			<td>TS410 and T402</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Stopcock with 3-ways</td>
			<td>BD Connexta Luerlock</td>
			<td>394600</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Millex Filter</td>
			<td>Milian</td>
			<td>SE2M229I04</td>
			<td></td>
		</tr>
	</tbody>
</table>

procedure for human saphenous veins ex vivo perfusion and external reinforcement

现代疗法的广泛闭塞性动脉疾病的主要方法是静脉旁路移植术。然而，它的耐久性受到威胁内膜增生（1H），最终导致血管闭塞和移植失败。的机械力，特别是在低剪切应力和高壁张力，被认为是发起和维持这些细胞和分子变化，但其确切的贡献仍有待解开。以选择性地评估的压力和剪切应力IH的生物学上的作用， 离体灌注系统（EVPS）已创建灌注下动脉方案的大隐静脉（高剪切应力和高压力）的片段。进一步的技术创新，使两部分的同时灌注同出一脉，一个是外部的网状钢筋。脉中使用非接触式技术收获并立即在EVPS转移到实验室进行组装。新鲜ISOL的一个片段ATED静脉未灌注（对照组，第0天）。另外两个节段灌注长达7天，一个是完全为4毫米（直径）外部网的庇护。压力，流速，和脉冲速率连续地监测并调节以模仿血液动力学条件盛行的股动脉。在灌注完成后，静脉被拆卸，并用于组织学和分子分析。下离体条件下，高压灌注（动脉，平均= 100毫米汞柱）足以产生IH和人类静脉的重塑。这些改变都减小外部聚酯丝网的存在。

的每股内含价值提供了一个有价值的工具，以独立评估血流动力学的力量对人类隐静脉移植重建和IH。 图1示出了灌注腔和静脉支撑。在图1A和B，前静脉载体（ 图1A）和之后（ 图1B）组件，分别被描绘。它是由（从顶部至底部）的1平纹不锈钢管尺寸为9厘米，这可作为2为L形件，可以容易地滑动（从左至右）的载?...

Watch this Scientific Journal Video about Procedure for Human Saphenous Veins Ex Vivo Perfusion and External Reinforcement at JoVE.com

Procedure for Human Saphenous Veins Ex Vivo Perfusion and External Reinforcement

导致内膜增生（IH）和静脉移植物衰竭的发展机制仍然知之甚少。这项研究描述了一种体外系统灌注在控制流量和压力的人脉。另外外部钢筋网的效率限制IH的发展进行了评价。

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Microtumors使用3D人体Biogel培养体系和病人源性胶质母细胞瘤的Kinomic剖析和药物反应测试的生成

The use of patient-derived xenografts for modeling cancers has provided important insight into cancer biology and drug responsiveness. However, they are ...

A Small Animal Model of Ex Vivo Normothermic Liver Perfusion

A Small Animal Model of Ex Vivo Normothermic Liver Perfusion

体外常温肝灌注的小动物模型

There is a significant shortage of liver allografts available for transplantation, and in response the donor criteria have been expanded. As a result, ...

Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts

前维沃·兰根多夫注入心脏的心电生理学研究

Small animal models are most commonly used in cardiovascular research due to the availability of genetically modified species and lower cost compared to ...