Name: a murine model of arterial restenosis: technical aspects of femoral wire injury
Uploaded: 2015-03-10T15:00:00
Description: Watch this Scientific Journal Video about A Murine Model of Arterial Restenosis: Technical Aspects of Femoral Wire Injury at JoVE.com

This work was supported by a Wisconsin Partnership Program New Investigator Award (ID 2832), a National Heart, Lung, Blood Institute R01 Grant (HL-068673) and a T32 training Grant (HL-110853). We thank Dr. Melina Kibbe&#8217;s group at Northwestern University for providing helpful information.

NOTA: Etica Dichiarazione: Tutte le procedure sono conformi alla Guida per la cura e l&#39;uso di animali da laboratorio (National Academies Press, 8 ° edizione, 2011), e dei protocolli approvati dalla cura e l&#39;uso degli animali Comitato Istituzionale presso l&#39;Università del Wisconsin. Tutti gli interventi chirurgici sono stati eseguiti in anestesia isoflurano (attraverso inalazione, portata 2 ml / min), e sono stati fatti tutti gli sforzi per ridurre al minimo le sofferenze. Gli animali sono stati sacrificati...

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	<li>Dzau, V. J., Braun-Dullaeus, R. C., Sedding, D. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Vascular+proliferation+and+atherosclerosis:+new+perspectives+and+therapeutic+strategies.">Vascular proliferation and atherosclerosis: new perspectives and therapeutic strategies.</a> Nat Med. 8 (11), 1249-1256 (2002).</li><li>Hui, D. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intimal+hyperplasia+in+murine+models.">Intimal hyperplasia in murine models.</a> Curr Drug Targets. 9 (3), 251-260 (2008).</li><li>Ferns, G. A., Avades, T. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+mechanisms+of+coronary+restenosis:+insights+from+experimental+models.">The mechanisms of coronary restenosis: insights from experimental models.</a> Int J Exp Pathol. 81 (2), 63-88 (2000).</li><li>Sata, 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+mouse+model+of+vascular+injury+that+induces+rapid+onset+of+medial+cell+apoptosis+followed+by+reproducible+neointimal+hyperplasia.">A mouse model of vascular injury that induces rapid onset of medial cell apoptosis followed by reproducible neointimal hyperplasia.</a> J Mol Cell Cardiol. 32 (11), 2097-2104 (2000).</li><li>Xu, Q. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mouse+models+of+arteriosclerosis:+from+arterial+injuries+to+vascular+grafts.">Mouse models of arteriosclerosis: from arterial injuries to vascular grafts.</a> Am J Pathol. 165 (1), 1-10 (2004).</li><li>Lv, L., Meng, Q., Ye, M., Wang, P., Xue, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=STAT4+deficiency+protects+against+neointima+formation+following+arterial+injury+in+mice.">STAT4 deficiency protects against neointima formation following arterial injury in mice.</a> J Mol Cell Cardiol. 74C, 284-294 (2014).</li><li>Zhu, B., Kuhel, D. G., Witte, D. P., Hui, D. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Apolipoprotein+E+inhibits+neointimal+hyperplasia+after+arterial+injury+in+mice.">Apolipoprotein E inhibits neointimal hyperplasia after arterial injury in mice.</a> Am J Pathol. 157 (6), 1839-1848 (2000).</li><li>Fu, Y., Duru, E. A., Davies, M. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effect+of+metabolic+syndrome+on+the+response+to+arterial+injury.">Effect of metabolic syndrome on the response to arterial injury.</a> J Surg Res. , (2014).</li><li>Kuhel, D. G., Zhu, B., Witte, D. P., Hui, D. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Distinction+in+genetic+determinants+for+injury-induced+neointimal+hyperplasia+and+diet-induced+atherosclerosis+in+inbred+mice.">Distinction in genetic determinants for injury-induced neointimal hyperplasia and diet-induced atherosclerosis in inbred mice.</a> Arterioscler Thromb Vasc Biol. 22 (6), 955-960 (2002).</li><li>Cooley, B. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mouse+strain+differential+neointimal+response+in+vein+grafts+and+wire-injured+arteries.">Mouse strain differential neointimal response in vein grafts and wire-injured arteries.</a> Circ J. 71 (10), 1649-1652 (2007).</li><li>Ishigami, N., 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=Deficiency+of+CuZn+superoxide+dismutase+promotes+inflammation+and+alters+medial+structure+following+vascular+injury.">Deficiency of CuZn superoxide dismutase promotes inflammation and alters medial structure following vascular injury.</a> J Atheroscler Thromb. 18 (11), 1009-1017 (2011).</li></ol>

La procedura lesioni filo è applicabile a tutti i ceppi di topi, purché le strutture anatomiche sono simili. 4 In questo lavoro, abbiamo utilizzato maschio C57BL / 6 topi con un&#39;età di 12-16 settimane. Come abbiamo imparato dai nostri studi preliminari, le arterie femorali di topi più giovani di 10 settimane sono spesso così piccole che l&#39;inserimento del filo è molto impegnativo. D&#39;altra parte, l&#39;inserimento del filo in topi vecchi a 16 settimane è tecnicamente più semplice, ma tende a...

In the era of expanded application of endovascular treatments for various cardiovascular diseases, restenosis after angioplasty is one of the major problems for patients undergoing such treatments. Damage to the vascular endothelium at the time of angioplasty, in concert with the atherosclerotic background, induces excessive smooth muscle cell proliferation in the medial layer, resulting in neointimal hyperplasia.1,2 A viable animal model that recapitulates post-angioplasty neointimal hyperplasia is, thus, important not only for the investigation of disease mechanisms but also for the development of effective therapeutics to treat this pathology.
Mice represent an excellent model animal to recapitulate neointimal hyperplasia for the following reasons: the genetic backgrounds of experimental mice are well established; a wide variety of genetically-modified strains are available;2 obtaining littermates of the same background is easy; and the cost of the animals is relatively low. Arterial ligation model and wire injury model are the two most common mouse models of mechanically-induced neointimal hyperplasia. The arterial ligation model is easy to create, but physiologically dissimilar to the actual angioplasty procedure. The wire injury model closely mimics actual angioplasty procedures but is technically difficult due to the small size of mouse arteries.2,3 Sata et al. first described a wire injury method for mouse femoral arteries based on the anatomical structure of the vasculature and the use of proper-sized flexible wire. Utilizing this technique, they succeeded in reproducibly inducing neointimal hyperplasia in various strains of mice.4
Although femoral wire injury is a well-established model, some of the technical aspects of the technique are highly challenging compared to other models such as ligation.5 The purpose of this paper is to describe our mouse wire injury model procedures in detail, which is a modified version of Sata&#8217;s original method. We have made two main modifications: 1) Looping only the arteries, and 2) No lidocaine use.

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a murine model of arterial restenosis: technical aspects of femoral wire injury

Le malattie cardiovascolari causate da aterosclerosi è la principale causa di morte nel mondo sviluppato. Restringimento del lume del vaso, a causa dello sviluppo della placca aterosclerotica o la rottura delle placche stabiliti, interrompe il normale flusso di sangue che porta a varie patologie, come l&#39;infarto del miocardio e ictus. Nella clinica procedure endovascolari, come l&#39;angioplastica sono comunemente eseguiti per riaprire il lume. Tuttavia, questi trattamenti inevitabilmente danneggiano la parete del serbatoio, nonché l&#39;endotelio vascolare, innescando una risposta guarigione eccessivo e lo sviluppo di una targa neointimale che si estende nel lume causando restenosi nave (ri-restringimento). Restenosi resta una delle principali cause di fallimento di trattamenti endovascolari per l&#39;aterosclerosi. Così, modelli animali preclinici di restenosi sono di vitale importanza per lo studio dei meccanismi fisiopatologici e traslazionale approcci per interventi vascolari. Tra diversi experime murinomodelli ntale, lesioni filo arteria femorale è ampiamente accettata come il più adatto per gli studi di restenosi post-angioplastica perché assomiglia da vicino la procedura di angioplastica che danneggia sia endotelio e parete del serbatoio. Tuttavia, molti ricercatori hanno difficoltà utilizzando questo modello grazie al suo elevato grado di difficoltà tecnica. Ciò è dovuto soprattutto un filo metallico deve essere inserito nell&#39;arteria femorale, che è circa tre volte più sottile il filo, per generare lesioni sufficiente ad indurre neointima prominente. Qui, descriviamo i dettagli chirurgici essenziali per superare efficacemente le maggiori difficoltà tecniche di questo modello. Seguendo le procedure presentate, eseguendo il pregiudizio del mouse filo femorale diventa più facile. Una volta familiarizzato, l&#39;intera procedura può essere completata entro 20 min.

Quattro settimane dopo l&#39;intervento, raccolgono l&#39;arteria femorale filo-feriti e rendono esemplare di blocco una paraffina per analizzare la formazione neointima. Indurre anestesia generale come descritto sopra. Aprire immediatamente il torace e inserire un calibro 20 farfalla ago al ventricolo sinistro. Collegare la linea ad una bottiglia di infusione. Eseguire la fissazione perfusione per infusione a goccia di PBS seguito da 4% paraformaldeide (di solito 10-20 ml, ciascuno). La bottiglia di infusione ...

Watch this Scientific Journal Video about A Murine Model of Arterial Restenosis: Technical Aspects of Femoral Wire Injury at JoVE.com

A Murine Model of Arterial Restenosis: Technical Aspects of Femoral Wire Injury

Il mouse filo arteria femorale modello di lesione di restenosi è tecnicamente impegnativo. In questo protocollo vi mostriamo i principali dettagli tecnici essenziali per eseguire con successo danno filo da indurre neointima coerente per gli studi di restenosi.

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