Name: primary outcome assessment in a pig model of acute myocardial infarction
Uploaded: 2016-10-14T15:00:00
Description: Watch this Scientific Journal Video about Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction at JoVE.com

The authors gratefully acknowledge Marlijn Jansen, Joyce Visser, Grace Croft, Martijn van Nieuwburg, Danny Elbersen and Evelyn Velema for their excellent technical support during the animal experiments.

Todos os experimentos com animais foram aprovados pelo Comitê de Ética em Experimentação Animal da Universidade Medical Center Utrecht (Utrecht, Holanda) e em conformidade com o &quot;Guia para o cuidado e uso de animais de laboratório&quot;. NOTA: O protocolo para realizar uma oclusão balão de tórax fechado não é parte do manuscrito corrente e é descrita em detalhe noutro local 5. Em suma, suínos (60 - 70 kg) são submetidos a 75 min oclusão com balão transluminal d...

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	<li>Mosterd, A., Hoes, A. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clinical+epidemiology+of+heart+failure.">Clinical epidemiology of heart failure.</a> Heart. 93 (9), 1137-1146 (2007).</li><li>Nichols, 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> European Cardiovascular Disease Statistics. , (2012).</li><li>Krumholz, H. 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=Reduction+in+Acute+Myocardial+Infarction+Mortality+in+the+United+States.">Reduction in Acute Myocardial Infarction Mortality in the United States.</a> JAMA. 302 (7), 767-773 (2010).</li><li>Go, A. 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=Heart+disease+and+stroke+statistics+-+2013+update:+A+Report+from+the+American+Heart+Association.">Heart disease and stroke statistics - 2013 update: A Report from the American Heart Association.</a> Circulation. 127 (1), (2013).</li><li>Koudstaal, 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=Myocardial+infarction+and+functional+outcome+assessment+in+pigs.">Myocardial infarction and functional outcome assessment in pigs.</a> J. Vis. Exp. (86), e51269 (2014).</li><li>Chareonthaitawee, P., Christian, T. F., Hirose, K., Gibbons, R. J., Rumberger, J. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Relation+of+initial+infarct+size+to+extent+of+left+ventricular+remodeling+in+the+year+after+acute+myocardial+infarction.">Relation of initial infarct size to extent of left ventricular remodeling in the year after acute myocardial infarction.</a> J. Am. Coll. Cardiol. 25 (3), 567-573 (1995).</li><li>Yellon, D. M., Hausenloy, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Myocardial+reperfusion+injury.">Myocardial reperfusion injury.</a> N. Engl. J. Med. 357 (11), 1221-1235 (2007).</li><li>Suzuki, Y., Lyons, J. K., Yeung, A. C., Ikeno, F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+vivo+porcine+model+of+reperfused+myocardial+infarction:+In+situ+double+staining+to+measure+precise+infarct+area/area+at+risk.">In vivo porcine model of reperfused myocardial infarction: In situ double staining to measure precise infarct area/area at risk.</a> Catheter Cardiovasc. Interv. 71 (1), 100-107 (2008).</li><li>Weidemann, 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=Myocardial+function+defined+by+strain+rate+and+strain+during+alterations+in+inotropic+states+and+heart+rate.">Myocardial function defined by strain rate and strain during alterations in inotropic states and heart rate.</a> Am. J. Physiol. Heart Circ. Physiol. 283 (2), H792-H799 (2002).</li><li>Mercier, J. 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=Two-dimensional+echocardiographic+assessment+of+left+ventricular+volumes+and+ejection+fraction+in+children.">Two-dimensional echocardiographic assessment of left ventricular volumes and ejection fraction in children.</a> Circulation. 65 (5), 962-969 (1982).</li><li>De Jong, R., 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=Cardiac+Function+in+a+Long-Term+Follow-Up+Study+of+Moderate+and+Severe+Porcine+Model+of+Chronic+Myocardial+Infarction.">Cardiac Function in a Long-Term Follow-Up Study of Moderate and Severe Porcine Model of Chronic Myocardial Infarction.</a> Biomed. Res. Int. 2015, 1-11 (2015).</li><li>Van Hout, G. P. J., 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=Invasive+surgery+reduces+infarct+size+and+preserves+cardiac+function+in+a+porcine+model+of+myocardial+infarction.">Invasive surgery reduces infarct size and preserves cardiac function in a porcine model of myocardial infarction.</a> J. Cell. Mol. Med. , 2655-2663 (2015).</li><li>Meybohm, 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=Assessment+of+left+ventricular+systolic+function+during+acute+myocardial+ischemia:+A+comparison+of+transpulmonary+thermodilution+and+transesophageal+echocardiography.">Assessment of left ventricular systolic function during acute myocardial ischemia: A comparison of transpulmonary thermodilution and transesophageal echocardiography.</a> Minerva Anestesiol. 77 (2), 132-141 (2011).</li><li>Gruenewald, 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=Visual+evaluation+of+left+ventricular+performance+predicts+volume+responsiveness+early+after+resuscitation+from+cardiac+arrest.">Visual evaluation of left ventricular performance predicts volume responsiveness early after resuscitation from cardiac arrest.</a> Resuscitation. 82 (12), 1553-1557 (2011).</li><li>Bolli, R., Becker, L., Gross, G., Mentzer, R., Balshaw, D., Lathrop, D. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Myocardial+protection+at+a+crossroads:+The+need+for+translation+into+clinical+therapy.">Myocardial protection at a crossroads: The need for translation into clinical therapy.</a> Circ. Res. 95 (2), 125-134 (2004).</li><li>Timmers, L., 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=Exenatide+reduces+infarct+size+and+improves+cardiac+function+in+a+porcine+model+of+ischemia+and+reperfusion+injury.">Exenatide reduces infarct size and improves cardiac function in a porcine model of ischemia and reperfusion injury.</a> J. Am. Coll. Cardiol. 53 (6), 501-510 (2009).</li><li>Csonka, 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=Measurement+of+myocardial+infarct+size+in+preclinical+studies.">Measurement of myocardial infarct size in preclinical studies.</a> J. Pharmacol. Toxicol. Methods. 61 (2), 163-170 (2010).</li><li>Law, R., Katzka, D. A., Baron, T. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Zenker's+Diverticulum.">Zenker's Diverticulum.</a> Clin. Gastroenterol. Hepatol. 12 (11), 1773-1782 (2014).</li><li>Philips Healthcare. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> QLAB 10.0 Quick Card: 3DQ and 3DQ Adv measurements guide. , (2013).</li><li>Transonic. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> ADV500 Pressure-Volume Measurement System Use and Care Manual, version 5. , (2006).</li><li>Schramm, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Is+the+cardiac+output+obtained+from+a+Swan-Ganz+catheter+always+zero?.">Is the cardiac output obtained from a Swan-Ganz catheter always zero?.</a> J. Clin. Monit. Comput. 22 (6), 431-433 (2008).</li><li>iWorx. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> LabScribe 3: Software Manual for Pressure-Volume Analyses. , (2014).</li><li>Hueper, W. C., Ichniowski, C. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Toxicopathologic+studies+on+the+dye+T-1824.">Toxicopathologic studies on the dye T-1824.</a> Arch. Surg. 48 (1), 17-26 (1944).</li><li>Van Hout, G. P. J., 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=Admittance-based+pressure-volume+loops+versus+gold+standard+cardiac+magnetic+resonance+imaging+in+a+porcine+model+of+myocardial+infarction.">Admittance-based pressure-volume loops versus gold standard cardiac magnetic resonance imaging in a porcine model of myocardial infarction.</a> Physiol. Rep. 2 (4), 1-9 (2014).</li><li>Burkhoff, D., Mirsky, I., Suga, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Assessment+of+systolic+and+diastolic+ventricular+properties+via+pressure-volume+analysis:+a+guide+for+clinical,+translational,+and+basic+researchers.">Assessment of systolic and diastolic ventricular properties via pressure-volume analysis: a guide for clinical, translational, and basic researchers.</a> Am. J. Physiol. Heart Circ. Physiol. Heart Circ. Physiol. 289 (2), H501-H512 (2005).</li><li>Frangogiannis, N. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+inflammatory+response+in+myocardial+injury,+repair,+and+remodelling.">The inflammatory response in myocardial injury, repair, and remodelling.</a> Nat. Rev. Cardiol. 11 (5), 255-265 (2014).</li><li>Fishbein, 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=Early+phase+acute+myocardial+infarct+size+quantification:+validation+of+the+triphenyl+tetrazolium+chloride+tissue+enzyme+staining+technique.">Early phase acute myocardial infarct size quantification: validation of the triphenyl tetrazolium chloride tissue enzyme staining technique.</a> Am. Heart. J. 101 (5), 593-600 (1981).</li><li>Arslan, 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=Treatment+with+OPN-305,+a+humanized+anti-toll-like+receptor-2+antibody,+reduces+myocardial+ischemia/reperfusion+injury+in+pigs.">Treatment with OPN-305, a humanized anti-toll-like receptor-2 antibody, reduces myocardial ischemia/reperfusion injury in pigs.</a> Circ. Cardiovasc. Interv. 5 (2), 279-287 (2012).</li><li>Meyns, B., Stolinski, J., Leunens, V., Verbeken, E., Flameng, W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Left+ventricular+support+by+Catheter-Mountedaxial+flow+pump+reduces+infarct+size.">Left ventricular support by Catheter-Mountedaxial flow pump reduces infarct size.</a> J. Am. Coll. Cardiol. 41 (7), 1087-1095 (2003).</li><li>Khalil, P. 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=Histochemical+assessment+of+early+myocardial+infarction+using+2,3,5-triphenyltetrazolium+chloride+in+blood-perfused+porcine+hearts.">Histochemical assessment of early myocardial infarction using 2,3,5-triphenyltetrazolium chloride in blood-perfused porcine hearts.</a> J. Pharmacol. Toxicol. Methods. 54 (3), 307-312 (2006).</li><li>Gardner, B. I., Bingham, S. E., Allen, M. R., Blatter, D. D., Anderson, J. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cardiac+magnetic+resonance+versus+transthoracic+echocardiography+for+the+assessment+of+cardiac+volumes+and+regional+function+after+myocardial+infarction:+an+intrasubject+comparison+using+simultaneous+intrasubject+recordings.">Cardiac magnetic resonance versus transthoracic echocardiography for the assessment of cardiac volumes and regional function after myocardial infarction: an intrasubject comparison using simultaneous intrasubject recordings.</a> Cardiovasc. Ultrasound. 7, 38 (2009).</li><li>Santos-Gallego, 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=3D-Echocardiography+Demonstrates+Excellent+Correlation+With+Cardiac+Magnetic+Resonance+for+Assessment+of+Left+Ventricular+Function+and+Volumes+in+a+Model+of+Myocardial+Infarction.">3D-Echocardiography Demonstrates Excellent Correlation With Cardiac Magnetic Resonance for Assessment of Left Ventricular Function and Volumes in a Model of Myocardial Infarction.</a> J. Am. Coll. Cardiol. 59 (13), E1564 (2012).</li><li>Keith Jones, ., W, , 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=Peripheral+nociception+associated+with+surgical+incision+elicits+remote+nonischemic+cardioprotection+via+neurogenic+activation+of+protein+kinase+C+signaling.">Peripheral nociception associated with surgical incision elicits remote nonischemic cardioprotection via neurogenic activation of protein kinase C signaling.</a> Circulation. 120, S1-S9 (2009).</li><li>Gross, G. J., Baker, J. E., Moore, J., Falck, J. R., Nithipatikom, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Abdominal+Surgical+Incision+Induces+Remote+Preconditioning+of+Trauma+(RPCT)+via+Activation+of+Bradykinin+Receptors+(BK2R)+and+the+Cytochrome+P450+Epoxygenase+Pathway+in+Canine+Hearts.">Abdominal Surgical Incision Induces Remote Preconditioning of Trauma (RPCT) via Activation of Bradykinin Receptors (BK2R) and the Cytochrome P450 Epoxygenase Pathway in Canine Hearts.</a> Cardiovasc. Drugs Ther. 25 (6), 517-522 (2011).</li><li>Van Hout, G. P. J., de Jong, R., Vrijenhoek, J. E. P., Timmers, L., Duckers, H. J., Hoefer, I. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Admittance-based+pressure-volume+loop+measurements+in+a+porcine+model+of+chronic+myocardial+infarction.">Admittance-based pressure-volume loop measurements in a porcine model of chronic myocardial infarction.</a> Exp. Physiol. 98 (11), 1565-1575 (2013).</li><li>Sunagawa, K., Maughan, W. L., Burkhoff, D., Sagawa, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Left+ventricular+interaction+with+arterial+load+studied+in+isolated+canine+ventricle.">Left ventricular interaction with arterial load studied in isolated canine ventricle.</a> Am. J. Physiol. 245 (5 Pt 1), H773-H780 (1983).</li><li>Steendijk, P., Baan, J., Der Velde, E. T. V. a. n., Baan, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+critical+coronary+stenosis+on+global+systolic+left+ventricular+function+quantified+by+pressure-volume+relations+during+dobutamine+stress+in+the+canine+heart.">Effects of critical coronary stenosis on global systolic left ventricular function quantified by pressure-volume relations during dobutamine stress in the canine heart.</a> J. Am. Coll. Cardiol. 32 (3), 816-826 (1998).</li></ol>

Remodelação cardíaca é amplamente dependendo do tamanho do infarto do miocárdio e a qualidade de infarto do miocárdio reparar 6,26. Para avaliar o ex de uma forma padronizada, a presente manuscrito fornece um método de elegante de infusão in vivo de azul de Evans combinadas ex vivo com TTC coloração, o qual foi validado e utilizado extensivamente 8,16,27,28. Este método permite a quantificação da área em risco (TAA) e o tamanho do enfarte em relação ao TAA 16....

Insuficiência cardíaca com fração de ejeção reduzida (ICFER) é responsável por cerca de 50% de todos os casos de insuficiência cardíaca, afetando aproximadamente 1 - 2% das pessoas no mundo ocidental 1. Sua causa mais comum é infarto agudo do miocárdio (IAM). Como a mortalidade aguda após IAM tem diminuído significativamente devido ao aumento da sensibilização e melhoria das opções de tratamento, a ênfase foi deslocada para a sua seqüelas crônicas; o ser mais proeminente ICDS 2,3. Juntamente com o aumento de custos de cuidados de saúde 4, a crescente epidemia de insuficiência cardíaca sublinha a necessidade de novas terapias e diagnósticos, que pode ser estudado num modelo suíno altamente translacional de remodelação adverso após AMI, como descrito anteriormente 5. Ambos, determinantes (por exemplo, a dimensão do enfarte) e avaliações funcionais (por exemplo, ecocardiografia) de remodelação adverso são muitas vezes utilizados para testes de eficácia de novos agentes terapêuticos, indicando a necessidade de relmétodos iable e relativamente barato. O objetivo do presente trabalho é o de atender a essa necessidade através da introdução de medidas importantes e confiáveis ​​resultados nos ensaios de eficácia em um modelo suíno de infarto agudo do miocárdio. Estes incluem o tamanho do enfarte (IS) em relação à área em risco (AAR), o ecocardiograma transesofágico 3D (3D-TEE) e da aquisição de loop pressão-volume detalhada baseada admissão (PV). Tamanho do infarto é o principal determinante da remodelação adversa e sobrevivência após AMI 6. Embora a reperfusão oportuna de miocárdio isquêmico pode salvar cardiomiócitos reversível feridos e limitar o tamanho do infarto, o próprio reperfusão provoca danos adicionais através da geração de estresse oxidativo e uma resposta inflamatória desproporcional (lesão de isquemia-reperfusão (IRI)) 7. Assim, IRI tem sido identificada como um alvo terapêutico promissor. A capacidade de novas terapias para diminuir o tamanho do infarto é quantificada por avaliar o tamanho do infarto em relaçãopara a área em risco (TAA). AAR quantificação é obrigatória para corrigir a variabilidade inter-individual na anatomia coronária de modelos animais, como AAR maior leva a um tamanho do infarto absoluta maior. Desde o tamanho do enfarte está directamente relacionada com o desempenho cardíaco e da contratilidade do miocárdio, as variações na AAR pode influenciar estudar medidas de resultados, independentemente de modalidades de tratamento 8. Tridimensional ecocardiografia transesofágica (3D-TEE) é um método barato seguro, confiável e, mais importante, clinicamente aplicável para medir a função cardíaca não-invasiva. Considerando ecocardiografia transtorácica (ETT) imagens estão limitados a vista 2D longo paraesternal e eixo curto em suínos 9, 3D-TEE pode ser usado para obter imagens em 3 dimensões completas do ventrículo esquerdo. Portanto, ele não requer aproximações matemáticas de ventrículo esquerdo (VE) volumes, tais como a regra 10 do Simpson modificado. Este último fica aquém do corrrectamente estimar volumes do VE após LV remodelação, devido à falta de geometria cilíndrica 11. Além disso, 3D-T é preferível sobre a ecocardiografia epicárdico como ele não requer intervenções cirúrgicas, que têm sido observados para exercer efeitos cardioprotectores no presente modelo 12. Embora o uso de 2D-T para a avaliação da função miocárdica foi descrito antes 13,14, limitações quanto geometria ventricular são semelhantes aos observados em 2D-ETT e dependem do grau de remodelação do VE. Assim, quanto maior for o enfarte (e, portanto, maior é a probabilidade de falha do coração), as medições de 2D mais prováveis ​​se tornar defeituosa por suposições incorrectas geométricas e quanto maior for a necessidade de técnicas em 3D. No entanto, a maioria das modalidades de imagem são limitados em sua capacidade de avaliar propriedades funcionais intrínsecas do miocárdio. PV loops de fornecer tais informações adicionais relevantes ea sua aquisição é, portanto,descrito em detalhe abaixo.

<table border="0" cellpadding="0" cellspacing="0" width="875">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">3-dimensional transesophageal echocardiography</td>
			<td style="width:180px;"></td>
			<td style="width:108px;"></td>
			<td style="width:191px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">iE33 ultrasound device</td>
			<td style="width:180px;">Philips</td>
			<td style="width:108px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">X7-2t transducer</td>
			<td style="width:180px;">Philips</td>
			<td style="width:108px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Aquasonic&#174; 100 ultrasound transmission gel</td>
			<td style="width:180px;">Parker Laboratories Inc.</td>
			<td style="width:108px;">01-34</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Battery handle type C (laryngoscope handle)</td>
			<td style="width:180px;">Riester</td>
			<td style="width:108px;">12303</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Ri-Standard Miller blade MIL 4 (laryngoscope blade)</td>
			<td style="width:180px;">Riester</td>
			<td style="width:108px;">12225</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Qlab 10.0 (3DQ Advanced) analysis software</td>
			<td style="width:180px;">Philips</td>
			<td style="width:108px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Pressure-volume loop acquisition</td>
			<td style="width:180px;"></td>
			<td style="width:108px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Cardiac defibrillator</td>
			<td style="width:180px;">Philips</td>
			<td style="width:108px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">0.9% saline</td>
			<td style="width:180px;">Braun</td>
			<td style="width:108px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">8F Percutaneous Sheath Introducer Set</td>
			<td style="width:180px;">Arrow</td>
			<td style="width:108px;">CP-08803</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">9F Radifocus&#174; Introducer II Standard Kit&#160;</td>
			<td style="width:180px;">Terumo</td>
			<td>RS*A90K10SQ</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">8F Fogarty catheter</td>
			<td style="width:180px;">Edward Life Sciences</td>
			<td>62080814F</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">7F Criticath&#8482; SP5107H TD catheter (Swan-Ganz)</td>
			<td style="width:180px;">Becton Dickinson (BD)</td>
			<td>680078</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:397px;">Ultraview SL Patient Monitor and Invasive Command Module (external cardiac output device)</td>
			<td>Spacelabs Healthcare</td>
			<td>91387</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">ADVantage system&#8482;</td>
			<td>Transonic SciSense</td>
			<td>-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">7F tetra-polar admittance catheter (7.0 VSL Pigtail / no lumen)</td>
			<td>Transonic SciSense</td>
			<td>-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Multi-channel acquisition system (Iworx 404)</td>
			<td>Iworx</td>
			<td style="width:108px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Labscribe V2.0 analysis software</td>
			<td style="width:180px;">Iworx</td>
			<td style="width:108px;">-</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Infarct size / area-at-risk quantification</td>
			<td style="width:180px;"></td>
			<td style="width:108px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Diathermy</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;"></td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Lebsch knife</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;"></td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Hammer</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;"></td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Bone marrow wax</td>
			<td style="width:180px;">Syneture</td>
			<td style="width:108px;"></td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Klinkenberg scissors</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;"></td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Retractor</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;"></td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Surgical scissors</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">7F Percutaneous Sheath Introducer Set&#160;</td>
			<td style="width:180px;">Arrow</td>
			<td>CP-08703</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">8F Percutaneous Sheath Introducer Set&#160;</td>
			<td style="width:180px;">Arrow</td>
			<td style="width:108px;">CP-08803</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;">7F JL4 guiding catheter&#160;</td>
			<td style="width:180px;">Boston Scientific</td>
			<td style="width:108px;">H749 34357-662</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">8F JL4 guiding catheter&#160;</td>
			<td style="width:180px;">Boston Scientific</td>
			<td>H749 34358-662&#160;</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">COPILOT Bleedback Control Valves&#160;</td>
			<td>Abbott Vascular</td>
			<td>1003331</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">BD Connecta&#8482;&#160;</td>
			<td style="width:180px;">Franklin Lakes</td>
			<td>394995</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Contrast agent</td>
			<td style="width:180px;">Telebrix</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:397px;">Persuader 9 Steerable Guidewire 9 (0.014&#34;, 180 cm, straight tip), hydrophilic coating</td>
			<td style="width:180px;">Medtronic Inc.</td>
			<td>9PSDR180HS</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:397px;">SAPPHIRE&#8482; Coronary Dilatation Catheter (PTCA balloon suitable for the size of the particular coronary artery (2.75 - 3.25 mm))</td>
			<td style="width:180px;">OrbusNeich</td>
			<td style="width:108px;">103-3015</td>
			<td>Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Evans Blue&#160;</td>
			<td style="width:180px;">Sigma-Aldrich</td>
			<td>E2129-100G</td>
			<td>Toxic. Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">2,3,5-triphenyl-tetrazolium chloride (TTC)</td>
			<td style="width:180px;">Sigma-Aldrich</td>
			<td>T8877-100G</td>
			<td>Irritant. Alternative product can be used</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">9V battery</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Ruler</td>
			<td style="width:180px;">-</td>
			<td style="width:108px;">-</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:397px;">Photocamera</td>
			<td style="width:180px;">Sony</td>
			<td style="width:108px;">-</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:397px;">ImageJ</td>
			<td style="width:180px;">National Institutes of Health</td>
			<td style="width:108px;">-</td>
			<td>Alternative product can be used</td>
		</tr>
	</tbody>
</table>

primary outcome assessment in a pig model of acute myocardial infarction

Mortality after acute myocardial infarction remains substantial and is associated with significant morbidity, like heart failure. Novel therapeutics are therefore required to confine cardiac damage, promote survival and reduce the disease burden of heart failure. Large animal experiments are an essential part in the translational process from experimental to clinical therapies. To optimize clinical translation, robust and representative outcome measures are mandatory. The present manuscript aims to address this need by describing the assessment of three clinically relevant outcome modalities in a pig acute myocardial infarction (AMI) model: infarct size in relation to area at risk (IS/AAR) staining, 3-dimensional transesophageal echocardiography (TEE) and admittance-based pressure-volume (PV) loops. Infarct size is the main determinant driving the transition from AMI to heart failure and can be quantified by IS/AAR staining. Echocardiography is a reliable and robust tool in the assessment of global and regional cardiac function in clinical cardiology. Here, a method for three-dimensional transesophageal echocardiography (3D-TEE) in pigs is provided. Extensive insight into cardiac performance can be obtained by admittance-based pressure-volume (PV) loops, including intrinsic parameters of myocardial function that are pre- and afterload independent. Combined with a clinically feasible experimental study protocol, these outcome measures provide researchers with essential information to determine whether novel therapeutic strategies could yield promising targets for future testing in clinical studies.

<html> 3D ecocardiografia transesofágica 3D ecocardiografia transesofágica (3D-T) pode ser utilizado para a avaliação da função cardíaca global. Após AMI, a função cardíaca global, difere de valores basais saudáveis. Em particular, a fração de ejeção ventricular esquerda (FEVE) diminui de 59 ± 4% para 37 ± 6% após uma semana de reperfusão (n = 10) (GPJ van Hout, 2015). Um aumento no volume s...

Watch this Scientific Journal Video about Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction at JoVE.com

Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction

avaliação fiável e exacta resultado é a chave para a tradução de terapias pré-clínicos para o tratamento clínico. O presente artigo descreve como avaliar três parâmetros de resultado primário clinicamente relevantes de desempenho cardíaco e danos em um modelo de infarto do miocárdio porco aguda.

Avaliação do resultado principal em um modelo suíno de Infarto Agudo do Miocárdio

Mortality after acute myocardial infarction remains substantial and is associated with significant morbidity, like heart failure. Novel therapeutics are ...

Research

JoVE Journal

Medicine

Acute Myocardial Infarction in Rats

Infarto Agudo do Miocárdio em Ratos

With heart failure leading the cause of death in the USA (Hunt), biomedical research is fundamental to advance medical treatments for cardiovascular ...

Medicina

MRI and PET in Mouse Models of Myocardial Infarction

Ressonância magnética e PET no rato modelos de Infarto do Miocárdio

Myocardial infarction is one of the leading causes of death in the Western world. The similarity of the mouse heart to the human heart has made it an ...

Myocardial Infarction and Functional Outcome Assessment in Pigs

Infarto do Miocárdio e Avaliação de Resultados Funcional em porcos

Introduction of newly discovered cardiovascular therapeutics into first-in-man trials depends on a strictly regulated ethical and legal roadmap. One ...

Myocardial Infarction in Neonatal Mice, A Model of Cardiac Regeneration

Infarto do miocárdio em ratos neonatais, um modelo de regeneração cardíaca

Myocardial infarction induced by coronary artery ligation has been used in many animal models as a tool to study the mechanisms of cardiac repair and ...

Real-time Pressure-volume Analysis of Acute Myocardial Infarction in Mice

Análise em tempo real de pressão-volume de infarto agudo do miocárdio em ratos

Acute myocardial infarction can lead to acute heart failure and cardiogenic shock. The evaluation of hemodynamics is critical for the evaluation of any ...

Digital PCR for Quantifying Circulating MicroRNAs in Acute Myocardial Infarction and Cardiovascular Disease

PCR digital para quantificar circulando MicroRNAs no infarto agudo do miocárdio e doença Cardiovascular

Circulating serum microRNAs (miRNAs) have shown promise as biomarkers for the cardiovascular disease and acute myocardial infarction (AMI), being released ...

Implantation of hiPSC-derived Cardiac-muscle Patches after Myocardial Injury in a Guinea Pig Model

Implantação de Patches hiPSC-derivado do músculo cardíaco após lesão miocárdica em um modelo de cobaia

Due to the limited regeneration capacity of the heart in adult mammals, myocardial infarction results in an irreversible loss of cardiomyocytes. This loss ...

A Cryoinjury Model to Study Myocardial Infarction in the Mouse

Um modelo Crioferimento para estudar infarto do miocárdio no mouse

The use of animal models is essential for developing new therapeutic strategies for acute coronary syndrome and its complications. In this article, we ...

Intramyocardial Transplantation of MSC-Loading Injectable Hydrogels after Myocardial Infarction in a Murine Model

Transplante intramial de hidrogéis injetáveis de carregamento de MSC após infarto do miocárdio em um modelo murino

One of the major issues facing current cardiac stem cell therapies for preventing postinfarct heart failure is the low retention and survival rates of ...

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock

Utilizando dispositivos de assistência ventricular percutânea em infarto agudo do miocárdio complicado por choque cardiogênico

Cardiogenic shock is defined as persistent hypotension, accompanied by evidence of end organ hypo-perfusion. Percutaneous ventricular assist devices ...