Name: noninvasive assessment of cardiac abnormalities in experimental autoimmune myocarditis by magnetic resonance microscopy imaging in the mouse
Uploaded: 2014-06-20T15:00:00
Description: Watch this Scientific Journal Video about Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse at JoVE.com

This work was supported by the National Institutes of Health (HL114669). CM is a recipient of a postdoctoral research fellowship grant awarded by the Myocarditis Foundation, NJ.

ETİK BEYANI: Bütün hayvan prosedürleri Laboratuar Hayvanlarının Bakımı ve Kullanımı kurallarına uygun olarak yapılmıştır ve Nebraska-Lincoln, Lincoln, NE Üniversitesi tarafından onaylanmıştır. Deneysel Otoimmün Miyokardit 1. İndüksiyon <ol><li> 2 mg/1.5 ml &#39;lik bir nihai konsantrasyona kadar 1x fosfat tamponlu tuzlu su içinde Myhc-α 334-352 eritilerek peptid çözeltisi hazırlayın. </li><li> 50 ng / ul &#39;lik bi...

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	<li>Heidenreich, P. 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=Forecasting+the+future+of+cardiovascular+disease+in+the+United+States:+a+policy+statement+from+the+American+Heart+Association.">Forecasting the future of cardiovascular disease in the United States: a policy statement from the American Heart Association.</a> Circulation. 123 (8), 933-944 (2011).</li><li>Fujinami, R. 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=Molecular+mimicry,+bystander+activation,+or+viral+persistence:+infections+and+autoimmune+disease.">Molecular mimicry, bystander activation, or viral persistence: infections and autoimmune disease.</a> Clin Microbiol Rev. 19 (1), 80-94 (2006).</li><li>Cihakova, D., Rose, N. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pathogenesis+of+myocarditis+and+dilated+cardiomyopathy.">Pathogenesis of myocarditis and dilated cardiomyopathy.</a> Adv Immunol. 99, 95-114 (2008).</li><li>Donermeyer, D. 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=Myocarditis-inducing+epitope+of+myosin+binds+constitutively+and+stably+to+I-Ak+on+antigen-presenting+cells+in+the+heart.">Myocarditis-inducing epitope of myosin binds constitutively and stably to I-Ak on antigen-presenting cells in the heart.</a> J Exp Med. 182 (5), 1291-1300 (1995).</li><li>Gangaplara, 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=Coxsackievirus+B3+infection+leads+to+the+generation+of+cardiac+myosin+heavy+chain-alpha-reactive+CD4+T+cells+in+A/J+mice.">Coxsackievirus B3 infection leads to the generation of cardiac myosin heavy chain-alpha-reactive CD4 T cells in A/J mice.</a> Clin Immunol. 144 (3), 237-249 (2012).</li><li>Huber, S. A., Lodge, P. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Coxsackievirus+B-3+myocarditis+in+Balb/c+mice.+Evidence+for+autoimmunity+to+myocyte+antigens.">Coxsackievirus B-3 myocarditis in Balb/c mice. Evidence for autoimmunity to myocyte antigens.</a> Am J Pathol. 116 (1), 21-29 (1984).</li><li>Massilamany, 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=Identification+of+novel+mimicry+epitopes+for+cardiac+myosin+heavy+chain-alpha+that+induce+autoimmune+myocarditis+in+A/J+mice.">Identification of novel mimicry epitopes for cardiac myosin heavy chain-alpha that induce autoimmune myocarditis in A/J mice.</a> Cell Immunol. 271, 438-449 (2011).</li><li>Pummerer, C. 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=Identification+of+cardiac+myosin+peptides+capable+of+inducing+autoimmune+myocarditis+in+BALB/c+mice.">Identification of cardiac myosin peptides capable of inducing autoimmune myocarditis in BALB/c mice.</a> J Clin Invest. 97 (9), 2057-2062 (1996).</li><li>Rose, N. R., Hill, S. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+pathogenesis+of+postinfectious+myocarditis.">The pathogenesis of postinfectious myocarditis.</a> Clin Immunol Immunopathol. 80, (1996).</li><li>Saraste, 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=Coronary+flow+reserve+and+heart+failure+in+experimental+coxsackievirus+myocarditis.+A+transthoracic+Doppler+echocardiography+study.">Coronary flow reserve and heart failure in experimental coxsackievirus myocarditis. A transthoracic Doppler echocardiography study.</a> Am J Physiol Heart Circ Physiol. 291, (2006).</li><li>Altes, T. 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=Hyperpolarized+3He+MR+lung+ventilation+imaging+in+asthmatics:+preliminary+findings.">Hyperpolarized 3He MR lung ventilation imaging in asthmatics: preliminary findings.</a> J Magn Reson Imaging. 13 (3), 378-384 (2001).</li><li>Driehuys, B., 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=Small+animal+imaging+with+magnetic+resonance+microscopy.">Small animal imaging with magnetic resonance microscopy.</a> ILAR J. 49 (1), 35-53 (2008).</li><li>Smith, B. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic+resonance+microscopy+with+cardiovascular+applications.">Magnetic resonance microscopy with cardiovascular applications.</a> Trends Cardiovasc Med. 6 (8), 247-254 (1996).</li><li>Potter, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic+resonance+microscopy+approaches+to+molecular+imaging:+sensitivity+vs+specificity.">Magnetic resonance microscopy approaches to molecular imaging: sensitivity vs specificity.</a> J Cell Biochem Suppl. 39, 147-153 (2002).</li><li>Benveniste, H., Blackband, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=MR+microscopy+and+high+resolution+small+animal+MRI:+applications+in+neuroscience+research.">MR microscopy and high resolution small animal MRI: applications in neuroscience research.</a> Prog Neurobiol. 67, 393-420 (2002).</li><li>Epstein, F. H., 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=MR+tagging+early+after+myocardial+infarction+in+mice+demonstrates+contractile+dysfunction+in+adjacent+and+remote+regions.">MR tagging early after myocardial infarction in mice demonstrates contractile dysfunction in adjacent and remote regions.</a> Magn Reson Med. 48 (2), 399-403 (2002).</li><li>Gewalt, S. 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=MR+microscopy+of+the+rat+lung+using+projection+reconstruction.">MR microscopy of the rat lung using projection reconstruction.</a> Magn Reson Med. 29 (1), 99-106 (1993).</li><li>Kern, M. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> The cardiac catheterization handbook., Edn 5th. , (2011).</li><li>Heiberg, E., 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=Design+and+validation+of+Segment--freely+available+software+for+cardiovascular+image+analysis.">Design and validation of Segment--freely available software for cardiovascular image analysis.</a> BMC Med Imaging. 10, (2010).</li><li>Cranney, G. B., 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=Left+ventricular+volume+measurement+using+cardiac+axis+nuclear+magnetic+resonance+imaging.+Validation+by+calibrated+ventricular+angiography.">Left ventricular volume measurement using cardiac axis nuclear magnetic resonance imaging. Validation by calibrated ventricular angiography.</a> Circulation. 82 (1), 154-163 (1990).</li><li>Hiba, B., 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+and+respiratory+double+self-gated+cine+MRI+in+the+mouse+at+7+T.">Cardiac and respiratory double self-gated cine MRI in the mouse at 7 T.</a> Magn Reson Med. 55 (3), 506-513 (2006).</li><li>Bryant, D., 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+failure+in+transgenic+mice+with+myocardial+expression+of+tumor+necrosis+factor-alpha.">Cardiac failure in transgenic mice with myocardial expression of tumor necrosis factor-alpha.</a> Circulation. 97 (14), 1375-1381 (1998).</li><li>Neu, 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=Cardiac+myosin-induced+myocarditis+as+a+model+of+postinfectious+autoimmunity.">Cardiac myosin-induced myocarditis as a model of postinfectious autoimmunity.</a> Eur Heart J. 12 Suppl D, 117-120 (1991).</li><li>Neumann, D. 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=Induction+of+multiple+heart+autoantibodies+in+mice+with+coxsackievirus+B3-+and+cardiac+myosin-induced+autoimmune+myocarditis.">Induction of multiple heart autoantibodies in mice with coxsackievirus B3- and cardiac myosin-induced autoimmune myocarditis.</a> J Immunol. 152 (1), 343-350 (1994).</li><li>Rose, N. 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=Postinfectious+autoimmunity:+two+distinct+phases+of+coxsackievirus+B3-induced+myocarditis.">Postinfectious autoimmunity: two distinct phases of coxsackievirus B3-induced myocarditis.</a> Ann N Y Acad Sci. 475, 146-156 (1986).</li><li>Farmer, J. B., Levy, G. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+simple+method+for+recording+the+electrocardiogram+and+heart+rate+from+conscious+animals.">A simple method for recording the electrocardiogram and heart rate from conscious animals.</a> Br J Pharmacol Chemother. 32 (1), 193-200 (1968).</li></ol>

Bu çalışmada otoimmün miyokardit etkilenmiş farelerde kalp anormallikleri tespit etmek için bir non-invaziv bir araç olarak MRM prosedürü ve programı açıklanır. EAM histolojik özellikleri insanların postenfeksiyöz miyokardit benzediğinden, fare modelleri yaygın miyokard yaralanma 23-25 ​​bağışıklık mekanizmaları tanımlamak için kullanılır. Ancak, miyokardit ile etkilenen hayvanların klinik olarak normal görünür, ve tanı deneyler 7 bitiminde histoloji dayanarak y...

Kalp yetmezliği ölümlerin önde gelen nedenidir ve miyokardit genç ergenler 1 kalp yetmezliğinin bir baskın nedenidir. Miyokardit ile etkilenen hastaların çoğu asemptomatik kalır ve hastalık kendiliğinden 2 çözümlenir. Ancak, etkilenen kişilerin% 10-20 dilate kardiyomiyopati (DKMP) 3 yol açan, kronik hastalığı gelişebilir. Çeşitli hayvan modelleri miyokardit bağışıklık hastalık oluşumunun incelenmesinde geliştirilmiştir. Hastalık kardiyak miyosin ağır zincir (Myhc)-α veya bunun immünolojik olarak peptid fragmanları ya da coxsackievirus B3 4-9 gibi patojenlerle enfekte ile immünize hayvanlar tarafından miyokardit-duyarlı A / J ve Balb / c farelerinde indüklenebilir. Bu çalışma, A / J farelerinde 334-352 kaynaklı miyokardit Myhc-α içerir. Miyokard sızmaları gösteren rağmen, miyokardit etkilenen hayvanların klinik olarak normal görünüyor; Tanı iltihap 7 a için kalplerin histolojik değerlendirilmesine dayanmaktadırnd ekokardiyografi 10. Manyetik rezonans mikroskobu (MRM) dakikalık kan damarlarının seviyesine (en fazla 10 mikron çapında) fonksiyonel detayların değerlendirilmesi izin, yüksek çözünürlüklü üç boyutlu düzlemlerde ile kardiyovasküler görüntüleme elde etmek için yaygın olarak kullanılan bir yöntemdir, ancak çözme gücü bu düzeyde , çözünürlük genellikle 1 mm 11-14 kadar elde edildiği rutin manyetik rezonans görüntüleme (MRI) tarama prosedürü ile elde değil. Bu hastalık sürecinin 14 erken zaman noktalarında performans parametrelerini elde etmek için de yüksek çözünürlüklü görüntüleri edinimine izin ve gibi MRM bir avantaj sunuyor. Klinik olarak, MRM görüntüleme yaygın hastalıklı kalp, akciğer veya beyin 15-17 işlevsel parametreleri çalışma uygulanmıştır. Bu çalışmada, otoimmün miyokardit etkilenen A / J farelerinde kalp anormallikleri tespit etmek için invazif olmayan bir araç olarak bir MRM tekniğinin kullanımı gösterilmektedir. Özellikle, tO MRM görüntüleme sağlar gibi makul doğruluk 18 ile sol ventrikül (LV) diyastol sonu hacmi ve ejeksiyon fraksiyonu (EF) gibi fonksiyonel parametrelerin ölçümü. Ilgili parametrelerin tanımları vardır: LV son diastolik hacim, diyastolik döngüsünün sonunda sol ventrikül kan hacmi ve ejeksiyon fraksiyonu, strok hacmi / diyastolik hacmi. Veri analizi manyetik rezonans tarayıcıları 19 tarafından alınan işlem DICOM uyumlu kardiyovasküler görüntüler için geliştirilen serbestçe kullanılabilir Segment yazılım kullanılarak gerçekleştirilir. Veriler, sağlıklı farelerde, bu fonksiyonel parametreler karşılaştırıldığında, LV diyastol sonu hacim, strok hacmi ve ejeksiyon fraksiyonunda bir azalmaya tekabül myocarditic hayvanlarda LV duvar kalınlığında bir artış saptandı.

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			<td height="25" style="height:25px;width:509px;">Myhc-a 334-352 (DSAFDVLSFTAEEKAGVYK)</td>
			<td style="width:364px;">Neopeptide, Cambridge, MA</td>
			<td style="width:145px;"></td>
			<td style="width:167px;">Store at 4&#959;C</td>
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			<td height="25" style="height:25px;">CFA</td>
			<td style="width:364px;">Sigma Aldrich, St Louis, MO</td>
			<td style="width:145px;">5881</td>
			<td>Store at 4&#959;C</td>
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			<td height="25" style="height:25px;">MTB&#160; H37Rv extract&#160;</td>
			<td>Difco Laboratories, Detroit, MI</td>
			<td>231141</td>
			<td>Store at 4&#959;C</td>
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			<td height="25" style="height:25px;">PT</td>
			<td>List Biologicals Laboratories, Campbell, CA</td>
			<td>181</td>
			<td>Store at 4&#959;C</td>
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			<td height="25" style="height:25px;">1x PBS&#160;</td>
			<td>Corning, Manassas, VA</td>
			<td>21-040-CV</td>
			<td>Store at 4&#959;C</td>
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			<td height="21" style="height:21px;">Isoflurane&#160;</td>
			<td>Piramal Healthcare, Mumbai, India</td>
			<td>NDC66794-013-25</td>
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			<td height="21" style="height:21px;">Female A/J mice&#160;</td>
			<td>Jackson Laboratories, Bar Harbor, ME</td>
			<td>646</td>
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			<td height="21" style="height:21px;">Leur-lok sterile 1 ml syrringe</td>
			<td>BD, Franklin Lakes, NJ</td>
			<td>309628</td>
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			<td height="21" style="height:21px;">Leur-lok sterile 3 ml syrringe</td>
			<td>BD, Franklin Lakes, NJ</td>
			<td>309657</td>
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			<td height="21" style="height:21px;">Sterile needle, 18 G</td>
			<td>BD, Franklin Lakes, NJ</td>
			<td>305195</td>
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			<td height="21" style="height:21px;">Sterile needle, 27 1/2 G</td>
			<td>BD, Franklin Lakes, NJ</td>
			<td>305109</td>
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			<td height="21" style="height:21px;">3-way stopcock&#160;</td>
			<td>Smiths Medical ASD, Inc. Dublin, OH</td>
			<td>MX5311L</td>
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			<td height="21" style="height:21px;">Kerlix gauze bandage rolls&#160;</td>
			<td>Covidien, Mansfield, MA</td>
			<td>6720</td>
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			<td height="21" style="height:21px;">Kimwipes</td>
			<td>Kimberly-Clark Professional, Roswell, GA</td>
			<td>34155</td>
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			<td height="21" style="height:21px;">Protouch Stockinette&#160;</td>
			<td>Medline Industries, Mundelein, IL</td>
			<td>30-1001</td>
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			<td height="21" style="height:21px;">Sterile surgical scissors and forceps</td>
			<td style="width:364px;">INOX tool Corporation</td>
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			<td height="21" style="height:21px;">Micro oven</td>
			<td style="width:364px;">GE Healthcare,&#160;</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td height="21" style="height:21px;">ThermiPAQ hot and cold therapy system&#160;</td>
			<td>Theramics Corporation, Springfield, IL</td>
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			<td></td>
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			<td>Target Corporation, MN</td>
			<td style="width:145px;"></td>
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			<td height="21" style="height:21px;">Up and Up Polymyxin B sulfate/Bacitracin/Neomycin sulfate antibiotic ointment</td>
			<td>Target Corporation, MN</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td style="width:364px;">North Safety Products, Smithfield, RI</td>
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			<td height="21" style="height:21px;">Cotton tipped applicator, 6&#8217;&#8217; wooden stem&#160;</td>
			<td>Jorgensen Laboratories, Inc. Loveland, CO</td>
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			<td>Summit Anesthesia Solutions, Ann Harbor, MI</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td height="21" style="height:21px;">Summit Anesthesia Support system for regulating flow of anesthesia&#160;</td>
			<td>Summit Anesthesia Solutions, Ann Harbor, MI</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td height="21" style="height:21px;">Specially designed animal holder</td>
			<td>Agilent Technologies, Santa Clara, CA</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td height="21" style="height:21px;">Bickford&#160;Omnicon F/Air&#160;anesthesia gas filter unit&#160;</td>
			<td>A.M. Bickford, Inc. Wales Center, NY</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td height="21" style="height:21px;">Pulse-oximeter module, MR compatible small animal monitoring and gating system&#160;</td>
			<td>Small Animal Instruments, Inc. Stony Brook, NY</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td height="21" style="height:21px;">Oxygen cylinder&#160;</td>
			<td>Matheson-Tri Gas, North-Central Zone, Lincoln, NE</td>
			<td style="width:145px;"></td>
			<td></td>
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			<td height="21" style="height:21px;">Gas regulator&#160;</td>
			<td>Western Medica, West Lake, OH</td>
			<td style="width:145px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Signal breaking module, MR compatible small animal monitoring and gating system</td>
			<td>Small Animal Instruments, Inc. Stony Brook, NY</td>
			<td style="width:145px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">9.4 T (400 MHZ) 89 mm vertical core bore MR scanner&#160;</td>
			<td>Agilent Technologies, Santa Clara, CA</td>
			<td style="width:145px;"></td>
			<td></td>
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		<tr height="21">
			<td height="21" style="height:21px;">4-cm millipede micro-imaging RF coil&#160;</td>
			<td>Agilent Technologies, Santa Clara, CA</td>
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			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">SAM PC monitor&#160;</td>
			<td>Small Animal Instruments, Inc. Stony Brook, NY</td>
			<td style="width:145px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Quantitative Medical Image analysis software&#160;</td>
			<td colspan="3">http://segment.heiberg.se;&#160; Segment v1.8 R1430,&#160; Medviso, Oresunds region, Sweden</td>
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		<tr height="21">
			<td height="21" style="height:21px;">Matlab software&#160;</td>
			<td>The Mathworks, Inc.&#160; Natick, MA</td>
			<td style="width:145px;"></td>
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		<tr height="21">
			<td height="21" style="height:21px;">Computer-Unix operating system</td>
			<td style="width:364px;"></td>
			<td style="width:145px;"></td>
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noninvasive assessment of cardiac abnormalities in experimental autoimmune myocarditis by magnetic resonance microscopy imaging in the mouse

Miyokardit miyokardın iltihabıdır, ama hastalıktan etkilenen gösteri klinik belirtilerin sadece ~ 10%. Miyokard yaralanma bağışıklık olayları incelemek için, miyokardit çeşitli fare modelleri yaygın olarak kullanılmaktadır. Bu çalışma, kardiyak miyosin ağır zincir (Myhc)-α A / J farelerinde 334-352 ile oluşturulan deneysel otoimmün miyokardit (EAM) dahil; etkilenen hayvanlar lenfositik miyokardit gelişebilir ama hiçbir belirgin klinik bulgular ile. Bu modelde, invazif olmayan bir yöntem olarak manyetik rezonans mikroskobu (MRM) en yarar gösterilmiştir Myhc-α 334-352 ile aşılanmış hayvanlarda kalp yapısal ve işlevsel değişiklikler tespit etmek. EAM ve sağlıklı fareler bir 9.4 T (400 MHz) 4 cm kırkayak radyo-frekans görüntüleme probu ve 100 G / cm üçlü eksen eğimleri ile donatılmış 89 mm dikey çekirdek delik tarayıcı kullanılarak görüntülendi. Kardiyak görüntüleri anima bir gradyan eko-tabanlı sine darbe dizisi kullanırken anestezi hayvanlardan elde ve edildils solunum ve pulse oksimetre ile takip edildi. Bu analiz, sağlıklı farelere göre ventriküllerin iç çapına karşılık gelen bir azalma ile, EAM farelerde ventriküler duvar kalınlığında bir artış saptandı. Veri iltihaplı kalplerinde morfolojik ve fonksiyonel değişiklikler, canlı hayvanlarda non-invaziv takip MRM ile olabileceğini düşündürmektedir. Sonuç olarak, MRM ilerlemesini ve regresyon bulaşıcı maddelerin neden olduğu hastalıklarda miyokardiyal yaralanmaların, hem de tedavilere cevap değerlendirmek bir avantaj sunar.

Bu raporda, EAM ile etkilenen hayvanların kalplerinde yapısal ve işlevsel değişiklikleri belirlemek için bir non-invaziv bir yöntem olarak MRM tekniğinin yarar gösterilir. Miyokardit CFA 7 Myhc-α 334-352 ile immünize hayvanlar ile A / J farelerinde indüklenmiştir ve hayvanlar 21 gün sonrası bağışıklık on MRM deneylere tabi tutulmuştur. MRM görüntüleme üçlü eksen eğimleri (maksimum gücü 100 G / cm) ile donatılmış bir 89 mm dikey delikli mıknatıs kullanarak 9.4 T (protonlar i?...

Watch this Scientific Journal Video about Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse at JoVE.com

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

This study demonstrates the successful establishment of magnetic resonance microscopy imaging as a non-invasive tool to assess the cardiac abnormalities in mice affected with autoimmune myocarditis. The data indicate that the technique can be used to monitor the disease-progression in live animals.

Fare Manyetik Rezonans Görüntüleme Mikroskopi tarafından Deneysel Otoimmün Miyokardit Kardiyak anormallikler noninvaziv değerlendirilmesi

Myocarditis is an inflammation of the myocardium, but only ~10% of those affected show clinical manifestations of the disease. To study the immune events ...

Research

JoVE Journal

Medicine

Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking

Özellik Takibi Manyetik Rezonans Türetilmiş Miyokard Gerinim Değerlendirmesi

Purpose: An accurate and practical method to measure parameters like strain in myocardial tissue is of great clinical value, since it has been shown, that ...

Multi-modal Imaging of Angiogenesis in a Nude Rat Model of Breast Cancer Bone Metastasis Using Magnetic Resonance Imaging, Volumetric Computed Tomography and Ultrasound

Manyetik Rezonans Görüntüleme, Volumetrik Bilgisayarlı Tomografi ve Ultrason Kullanımı Meme Kanseri Kemik metastazı bir Nude Rat Model Angiogenezis Multi-modal Görüntüleme

Angiogenesis is an essential feature of cancer growth and metastasis formation. In bone metastasis, angiogenic factors are pivotal for tumor cell ...

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Nörodejeneratif Hastalıkların Analizi Difüzyon Tensör Manyetik Rezonans Görüntüleme

Diffusion tensor imaging (DTI) techniques provide information on the microstructural processes of the cerebral white matter (WM) in vivo. The present ...

Implanting Glass Spinal Cord Windows in Adult Mice with Experimental Autoimmune Encephalomyelitis

Deneysel Otoimmün Encephalomyelitis Erişkin Farelerde Cam Omurilik Windows&#39;u implante

Experimental autoimmune encephalomyelitis (EAE) in adult rodents is the standard experimental model for studying autonomic demyelinating diseases such as ...

Simultaneous PET/MRI Imaging During Mouse Cerebral Hypoxia-ischemia

Fare Serebral Hipoksi-iskemi sırasında Eşzamanlı PET / MR Görüntüleme

Dynamic changes in tissue water diffusion and glucose metabolism occur during and after hypoxia in cerebral hypoxia-ischemia reflecting a bioenergetics ...

Assessment of Cardiac Morphological and Functional Changes in Mouse Model of Transverse Aortic Constriction by Echocardiographic Imaging

Ekokardiyografik Imaging tarafından Enine Aort Konstrüksiyon Mouse Modeli Kardiyak Morfolojik Değerlendirilmesi ve Fonksiyonel Değişiklikler

Transverse aortic constriction (TAC) in mice has been used as a valuable model to study mechanisms of cardiac hypertrophy and heart failure1. A reliable ...

In Vivo Tracking of Edema Development and Microvascular Pathology in a Model of Experimental Cerebral Malaria Using Magnetic Resonance Imaging

In Vivo Tracking of Edema Development and Microvascular Pathology in a Model of Experimental Cerebral Malaria Using Magnetic Resonance Imaging

Manyetik Rezonans Görüntüleme Kullanarak Deneysel Serebral Sıtma Bir Modelinde Ödem Gelişimi ve Mikrovasküler Patolojinin İn Vivo Takibi

Cerebral malaria is a sign of severe malarial disease and is often a harbinger of death. While aggressive management can be life-saving, the detection of ...

Quantitative Visualization of Leukocyte Infiltrate in a Murine Model of Fulminant Myocarditis by Light Sheet Microscopy

Bir Fulminan Miyokardit Modelinde Işık Yeri Mikroskopisi İle Lökosit İnfiltrasyonunun Nicel Görselleştirilmesi

Light-sheet fluorescence microscopy (LSFM), in combination with chemical clearing protocols, has become the gold standard for analyzing fluorescently ...

Cardiac Magnetic Resonance Imaging at 7 Tesla

7 Tesla, kardiyak manyetik rezonans görüntüleme

CMR at an ultra-high field (magnetic field strength B0&#160;&#8805; 7 Tesla) benefits from the signal-to-noise ratio (SNR) advantage inherent at higher ...

Phase Contrast Magnetic Resonance Imaging in the Rat Common Carotid Artery

Faz kontrast manyetik rezonans görüntüleme sıçan ortak karotis arter

Phase contrast magnetic resonance imaging (PC-MRI) is a noninvasive approach that can quantify flow-related parameters such as blood flow. Previous ...