Name: intramyocardial transplantation of msc-loading injectable hydrogels after myocardial infarction in a murine model
Uploaded: 2020-09-20T15:00:00
Description: Watch this Scientific Journal Video about Intramyocardial Transplantation of MSC-Loading Injectable Hydrogels after Myocardial Infarction in a Murine Model at JoVE.com

Denne forskning støttes af Basic Science Research Program gennem National Research Foundation of Korea (NRF) finansieret af Undervisningsministeriet (NRF-2018R1D1A1A02049346)

Alle dyreforsøg blev leveret i overensstemmelse med loven om dyrevelfærd for forsøgsdyr, vejledningen for pleje og brug af forsøgsdyr og retningslinjerne og politikkerne for gnaverforsøg, der blev leveret af Institutional Animal Care and Use Committee (IACUC) på School of Medicine ved Det Katolske Universitet i Korea.
1. Forberedelse af MSC'er og injicerbare gelatinehydrogeler
<ol><li>Kultur-MSC'er i en 100 mm dyrkningsskål ved 37 °C og 5% CO2. Når MSC'ernes vækst når o...

<ol>
	<li>Jhund, P. S., McMurray, J. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Heart+failure+after+acute+myocardial+infarction:+a+lost+battle+in+the+war+on+heart+failure.">Heart failure after acute myocardial infarction: a lost battle in the war on heart failure.</a> Circulation. 118 (20), 2019-2021 (2008).</li><li>Cahill, T. J., Kharbanda, R. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Heart+failure+after+myocardial+infarction+in+the+era+of+primary+percutaneous+coronary+intervention:+Mechanisms,+incidence+and+identification+of+patients+at+risk.">Heart failure after myocardial infarction in the era of primary percutaneous coronary intervention: Mechanisms, incidence and identification of patients at risk.</a> World Journal of Cardiology. 9 (5), 407-415 (2017).</li><li>Cambria, 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=Translational+cardiac+stem+cell+therapy:+advancing+from+first-generation+to+next-generation+cell+types.">Translational cardiac stem cell therapy: advancing from first-generation to next-generation cell types.</a> npj Regenerative Medicine. 2, 17 (2017).</li><li>Lemcke, H., Voronina, N., Steinhoff, G., David, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Recent+Progress+in+Stem+Cell+Modification+for+Cardiac+Regeneration.">Recent Progress in Stem Cell Modification for Cardiac Regeneration.</a> Stem Cells International. 2018, 1909346 (2018).</li><li>Alagarsamy, K. N., Yan, W., Srivastava, A., Desiderio, V., Dhingra, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Application+of+injectable+hydrogels+for+cardiac+stem+cell+therapy+and+tissue+engineering.">Application of injectable hydrogels for cardiac stem cell therapy and tissue engineering.</a> Reviews in Cardiovascular Medicine. 20 (4), 221-230 (2019).</li><li>Gaetani, 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=Epicardial+application+of+cardiac+progenitor+cells+in+a+3D-printed+gelatin/hyaluronic+acid+patch+preserves+cardiac+function+after+myocardial+infarction.">Epicardial application of cardiac progenitor cells in a 3D-printed gelatin/hyaluronic acid patch preserves cardiac function after myocardial infarction.</a> Biomaterials. 61, 339-348 (2015).</li><li>Gao, 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=Myocardial+Tissue+Engineering+With+Cells+Derived+From+Human-Induced+Pluripotent+Stem+Cells+and+a+Native-Like,+High-Resolution,+3-Dimensionally+Printed+Scaffold.">Myocardial Tissue Engineering With Cells Derived From Human-Induced Pluripotent Stem Cells and a Native-Like, High-Resolution, 3-Dimensionally Printed Scaffold.</a> Circualtion Research. 120 (8), 1318-1325 (2017).</li><li>Hasan, 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=Injectable+Hydrogels+for+Cardiac+Tissue+Repair+after+Myocardial+Infarction.">Injectable Hydrogels for Cardiac Tissue Repair after Myocardial Infarction.</a> Advanced Science. 2 (11), 1500122 (2015).</li><li>Wu, R., Hu, X., Wang, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Concise+Review:+Optimized+Strategies+for+Stem+Cell-Based+Therapy+in+Myocardial+Repair:+Clinical+Translatability+and+Potential+Limitation.">Concise Review: Optimized Strategies for Stem Cell-Based Therapy in Myocardial Repair: Clinical Translatability and Potential Limitation.</a> Stem Cells. 36 (4), 482-500 (2018).</li><li>Lee, 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=In+situ+forming+gelatin-based+tissue+adhesives+and+their+phenolic+content-driven+properties.">In situ forming gelatin-based tissue adhesives and their phenolic content-driven properties.</a> Journal of Materials Chemistry B. 1 (18), 2407-2414 (2013).</li><li>Lee, Y., Bae, J. W., Lee, J. W., Suh, W., Park, K. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enzyme-catalyzed+in+situ+forming+gelatin+hydrogels+as+bioactive+wound+dressings:+effects+of+fibroblast+delivery+on+wound+healing+efficacy.">Enzyme-catalyzed in situ forming gelatin hydrogels as bioactive wound dressings: effects of fibroblast delivery on wound healing efficacy.</a> Journal of Materials Chemistry B. 2 (44), 7712-7718 (2014).</li><li>Lee, S. 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=In+situ+Crosslinkable+Gelatin+Hydrogels+for+Vasculogenic+Induction+and+Delivery+of+Mesenchymal+Stem+Cells.">In situ Crosslinkable Gelatin Hydrogels for Vasculogenic Induction and Delivery of Mesenchymal Stem Cells.</a> Advanced Functional Materials. 24 (43), 6771-6781 (2014).</li><li>Jung, B. K., 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+hydrogel+matrix+prolongs+persistence+and+promotes+specific+localization+of+an+oncolytic+adenovirus+in+a+tumor+by+restricting+nonspecific+shedding+and+an+antiviral+immune+response.">A hydrogel matrix prolongs persistence and promotes specific localization of an oncolytic adenovirus in a tumor by restricting nonspecific shedding and an antiviral immune response.</a> Biomaterials. 147, 26-38 (2017).</li><li>Kim, G., 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=Tonsil-derived+mesenchymal+stem+cell-embedded+in+situ+crosslinkable+gelatin+hydrogel+therapy+recovers+postmenopausal+osteoporosis+through+bone+regeneration.">Tonsil-derived mesenchymal stem cell-embedded in situ crosslinkable gelatin hydrogel therapy recovers postmenopausal osteoporosis through bone regeneration.</a> PLoS One. 13 (7), 0200111 (2018).</li><li>Kim, C. 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=MSC-Encapsulating+in+situ+Cross-Linkable+Gelatin+Hydrogels+To+Promote+Myocardial+Repair.">MSC-Encapsulating in situ Cross-Linkable Gelatin Hydrogels To Promote Myocardial Repair.</a> ACS Applied Bio Materials. 3 (3), 1646-1655 (2020).</li><li>Meirelles Lda, S., Nardi, N. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Murine+marrow-derived+mesenchymal+stem+cell:+isolation,+in+vitro+expansion,+and+characterization.">Murine marrow-derived mesenchymal stem cell: isolation, in vitro expansion, and characterization.</a> Br J Haematol. 123 (4), 702-711 (2003).</li><li>Ojha, 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=Characterization+of+the+structural+and+functional+changes+in+the+myocardium+following+focal+ischemia-reperfusion+injury.">Characterization of the structural and functional changes in the myocardium following focal ischemia-reperfusion injury.</a> Am J Physiol Heart Circ Physiol. 294 (6), 2435-2443 (2008).</li><li>Takagawa, 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=Myocardial+infarct+size+measurement+in+the+mouse+chronic+infarction+model:+comparison+of+area-+and+length-based+approaches.">Myocardial infarct size measurement in the mouse chronic infarction model: comparison of area- and length-based approaches.</a> Journal of Applied Physiology. 102 (6), 2104-2111 (2007).</li><li>Terrovitis, 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=Noninvasive+Quantification+and+Optimization+of+Acute+Cell+Retention+by+In+vivo+Positron+Emission+Tomography+After+Intramyocardial+Cardiac-Derived+Stem+Cell+Delivery.">Noninvasive Quantification and Optimization of Acute Cell Retention by In vivo Positron Emission Tomography After Intramyocardial Cardiac-Derived Stem Cell Delivery.</a> Journal of the American College of Cardiology. 54 (17), 1619-1626 (2009).</li><li>Dib, N., Khawaja, H., Varner, S., McCarthy, M., Campbell, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cell+Therapy+for+Cardiovascular+Disease:+A+Comparison+of+Methods+of+Delivery.">Cell Therapy for Cardiovascular Disease: A Comparison of Methods of Delivery.</a> Journal of Cardiovascular Translational Research. 4 (2), 177-181 (2011).</li></ol>

Injicerbare GH hydrogels har et stort potentiale for in vivo applikationer på grund af deres evne til homogent at indarbejde forskellige terapeutiske midler in situ. Desuden kan deres fysiske og biokemiske egenskaber let manipuleres baseret på sygdomsafhængige krav. I den forbindelse er der foreslået injicerbare hydrogels for at afhjælpe de store begrænsninger i den nuværende hjertestamcelleterapi hæmmet af dårlig overlevelse og cellefastholdelse (dvs. < 10% inden for 24 timer efter transplantation) i det skaded...

Hjerte stamcelleterapi har vist sig som en potentiel tilgang til myokardie reparation og regenerering1,2. På trods af de seneste positive resultater i dyremodeller og kliniske forsøg er anvendelsen af stamcellebaseret terapi til myokardiereparation begrænset på grund af lav tilbageholdelse og dårlig overlevelse af injicerede celler ved det infarkte hjertevæv3,4. Som følgeherafer brugen af cellebaseret vævsteknik, herunder injicerbare biomaterialer 5 , hjerteplastre6og celleark7, blevet intensivt undersøgt for at forbedre cellefastholdelse og integration inden for værtens myokardiium.
Blandt de forskellige potentielle tilgange til bioengineered hjertevæv reparation, injicerbare hydrogels kombineret med passende celletyper, såsom mesenchymale stamceller (MSC), embryonale stamceller (ESCs), og induceret pluripotente stamceller (iPSCs), er en attraktiv mulighed for effektivt at levere celler i myokardie regioner8,9. Gelatine, en velkendt naturlig polymer, kan bruges som en injicerbar matrix på grund af dens store biokompatibilitet, betydelig bionedbrydelighed og reduceret immunogenicitet sammenlignet med en bred vifte af biomaterialer, der anvendes i biomedicinske applikationer. Selv om gelatinebaserede injicerbare platforme har et stort potentiale, er deres anvendelighed in vivo fortsat begrænset baseret på deres lave mekaniske stivhed og lette nedbrydelighed i det fysiologiske miljø.
For at overvinde disse begrænsninger er der foreslået et nyt og enkelt design af gelatinebaserede hydrogeler bestående af hydroxyphenylpropionsyre til in vivo-anvendelser. Gelatine-hydroxyphenyl propionsyre (GH) konjugater kan krydsbundet in situ i nærværelse af et enzym, peberrod peroxidase (HRP), og efterfølgende indkapsle forskellige lægemidler, biomolekyler, eller celler i hydrogel, hvilket tyder på et stort potentiale i væv engineering applikationer10,11,12,13,14. Derudover har vi for nylig undersøgt de terapeutiske virkninger af GH hydrogels, der indeholder indkapslede MSC'er og demonstreret deres anvendelse i vellykket hjertereparation og regenerering efter MI i en murine model15. I denne protokol beskriver vi en simpel teknik til indkapsling og in vitro tredimensionel (3D) spredning af MSC'er inden for GH hydrogels. Vi introducerer også en kirurgisk procedure designet til at generere en murin MI-model via koronararterie ligation og intramyokardietransplantation af MSC-loading GH hydrogels i det infarkte hjerte.

<table>
	<tbody>
		<tr>
			<td>4 % paraformaldehyde (PFA)</td>
			<td>Intron</td>
			<td>IBS-BP031-2</td>
			<td></td>
		</tr>
		<tr>
			<td>5-0 silk suture</td>
			<td>AILEE</td>
			<td>SK534</td>
			<td></td>
		</tr>
		<tr>
			<td>8-0 polypropylene suture</td>
			<td>ETHICON</td>
			<td>M8732H</td>
			<td></td>
		</tr>
		<tr>
			<td>8-well chamber slide</td>
			<td>Nunc LAB-TEK</td>
			<td>154534</td>
			<td></td>
		</tr>
		<tr>
			<td>Angiocath Plus (22GA) catheter</td>
			<td>BD Angiocath Plus</td>
			<td>REF382423</td>
			<td></td>
		</tr>
		<tr>
			<td>Antibiotic-antimyocotic</td>
			<td>Gibco</td>
			<td>15240-062</td>
			<td></td>
		</tr>
		<tr>
			<td>Centrifuge</td>
			<td>GYROGEN</td>
			<td>1582MGR</td>
			<td></td>
		</tr>
		<tr>
			<td>Confocal microscope</td>
			<td>Zeiss</td>
			<td>LSM 510</td>
			<td></td>
		</tr>
		<tr>
			<td>Cover slipe</td>
			<td>MARIENFELD</td>
			<td>101242</td>
			<td></td>
		</tr>
		<tr>
			<td>Deluxe High Temperature Cautery kit</td>
			<td>Bovie</td>
			<td>QTY1</td>
			<td></td>
		</tr>
		<tr>
			<td>DMEM</td>
			<td>Gibco</td>
			<td>11995-065</td>
			<td></td>
		</tr>
		<tr>
			<td>DPBS</td>
			<td>Gibco</td>
			<td>14040-133</td>
			<td></td>
		</tr>
		<tr>
			<td>Dual-syringe</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>EOSIN</td>
			<td>SIGMA-ALDRICH</td>
			<td>HT110116</td>
			<td></td>
		</tr>
		<tr>
			<td>Ethanol</td>
			<td>EMSURE</td>
			<td>K49350783 739</td>
			<td></td>
		</tr>
		<tr>
			<td>FBS</td>
			<td>Gibco</td>
			<td>16000-044</td>
			<td></td>
		</tr>
		<tr>
			<td>Fechtner conjunctiva forceps titanium</td>
			<td>WORLD PRECISISON INSTRUMENTS</td>
			<td>WP1820</td>
			<td></td>
		</tr>
		<tr>
			<td>Fluorescein isothiocyanate isomer I (FITC)</td>
			<td>SIGMA-ALDRICH</td>
			<td>F7250</td>
			<td></td>
		</tr>
		<tr>
			<td>Forcep</td>
			<td>HEBU</td>
			<td>HB0458</td>
			<td></td>
		</tr>
		<tr>
			<td>Hair removal cream</td>
			<td>Ildong Pharmaceutical</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Heating pad</td>
			<td>Stoelting</td>
			<td>50300</td>
			<td>Homeothermic Blanket System</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td>50301</td>
			<td>Replacement Heating Pad for 50300 (10 X 12.5cm)</td>
		</tr>
		<tr>
			<td>Hematoxylin</td>
			<td>SIGMA-ALDRICH</td>
			<td>HHS80</td>
			<td></td>
		</tr>
		<tr>
			<td>Horseradish peroxide (HRP; 250-330 U/mg)</td>
			<td>SIGMA-ALDRICH</td>
			<td>P8375</td>
			<td></td>
		</tr>
		<tr>
			<td>Hydrogen peroxide (H2O2; 30 wt % in H2O)</td>
			<td>SIGMA-ALDRICH</td>
			<td>216763</td>
			<td></td>
		</tr>
		<tr>
			<td>Iodine</td>
			<td>Green Pharmaceutical</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>LIVE/DEAD cell staining kit</td>
			<td>Thermo Fisher</td>
			<td>R37601</td>
			<td></td>
		</tr>
		<tr>
			<td>Mechanical ventilator</td>
			<td>Harvard Apparatus</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Micro centrifuge</td>
			<td>HANIL</td>
			<td>Micro 12</td>
			<td></td>
		</tr>
		<tr>
			<td>Micro needle holder</td>
			<td>KASCO</td>
			<td>37-1452</td>
			<td></td>
		</tr>
		<tr>
			<td>Micro scissor</td>
			<td>HEBU</td>
			<td>HB7381</td>
			<td></td>
		</tr>
		<tr>
			<td>Microscope</td>
			<td>OLYMPUS</td>
			<td>SZ61</td>
			<td></td>
		</tr>
		<tr>
			<td>MT staining kit</td>
			<td>SIGMA-ALDRICH</td>
			<td>HT1079-1SET</td>
			<td>Weigert&#8217;s iron hematoxylin solution</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td>HT15-1KT</td>
			<td>Trichrome Stain (Masson) Kit</td>
		</tr>
		<tr>
			<td>Paraffin</td>
			<td>LK LABKOREA</td>
			<td>H06-660-107</td>
			<td></td>
		</tr>
		<tr>
			<td>PBS buffer</td>
			<td>Gibco</td>
			<td>10010-023</td>
			<td></td>
		</tr>
		<tr>
			<td>PHK26 staining kit</td>
			<td>SIGMA-ALDRICH</td>
			<td>MINI26</td>
			<td></td>
		</tr>
		<tr>
			<td>Slide scanner</td>
			<td>Leica</td>
			<td>SCN400</td>
			<td></td>
		</tr>
		<tr>
			<td>Surgical scissor</td>
			<td>HEBU</td>
			<td>HB7454</td>
			<td></td>
		</tr>
		<tr>
			<td>Surgical tape</td>
			<td>3M micopore</td>
			<td>1530-1</td>
			<td></td>
		</tr>
		<tr>
			<td>Tissue cassette</td>
			<td>Scilab Korea</td>
			<td>Cas3003</td>
			<td></td>
		</tr>
		<tr>
			<td>Transducer gel</td>
			<td>SUNGHEUNG</td>
			<td>SH102</td>
			<td></td>
		</tr>
		<tr>
			<td>Trout-Barraquer needle holder curved</td>
			<td>KASCO</td>
			<td>50-3710c</td>
			<td></td>
		</tr>
		<tr>
			<td>Ultrasound system</td>
			<td>Philips</td>
			<td>Affiniti 50</td>
			<td></td>
		</tr>
		<tr>
			<td>Xylene</td>
			<td>JUNSEI</td>
			<td>25175-0430</td>
			<td></td>
		</tr>
	</tbody>
</table>

intramyocardial transplantation of msc-loading injectable hydrogels after myocardial infarction in a murine model

Et af de største problemer, som de nuværende hjerte stamcelleterapier til forebyggelse af postinfarkt hjertesvigt står over for, er den lave tilbageholdelse og overlevelsesraten for transplanterede celler i det skadede myokardie, hvilket begrænser deres terapeutiske effekt. For nylig har brugen af stilladser biomaterialer fået opmærksomhed for at forbedre og maksimere stamcelleterapi. Formålet med denne protokol er at indføre en enkel og enkel teknik til transplantation af knoglemarvsafledte mesenchymale stamceller (MSC) ved hjælp af injicerbare hydroxyphenylpropionsyre (GH) hydrogels; hydrogels er gunstige som en celle levering platform for hjertevæv engineering applikationer på grund af deres evne til at være krydsbundet in situ og høj biokompatibilitet. Vi præsenterer en enkel metode til fremstilling af MSC-loading GH hydrogels (MSC/hydrogels) og evaluerer deres overlevelse og spredning i tredimensionel (3D) in vitro-kultur. Derudover demonstrerer vi en teknik til intramyokardietransplantation af MSC / hydrogels hos mus, der beskriver en kirurgisk procedure for at fremkalde myokardieinfarkt (MI) via venstre forreste faldende (LAD) koronararterie ligation og efterfølgende MSC / hydrogels transplantation.

For effektivt at levere MSC'er til det infarkte myokardie blev MSC-loading in situ cross-linkable hydrogels beskrevet i figur 1 anvendt i denne protokol. Forud for in vivo-transplantation blev spredningen og overlevelsen af MSC'er i GH hydrogels bekræftet af en 3D-in vitro live/død cellebegændelsesanalyse (levende: grøn; død: rød). Som det fremgår af figur 2, viste repræsentative billeder tilstrækkelig spredning af MSC'er, der viste forgrenede netværk ...

Watch this Scientific Journal Video about Intramyocardial Transplantation of MSC-Loading Injectable Hydrogels after Myocardial Infarction in a Murine Model at JoVE.com

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

Stamcellebaseret terapi har vist sig som en effektiv strategi til at reparere skadet hjertevæv efter myokardieinfarkt. Vi leverer en optimal in vivo ansøgning om stamcelletransplantation ved hjælp af gelatine hydrogels, der er i stand til at være enzymatisk krydsbundet.

Intramyocardial Transplantation af MSC-Loading Injicerbare Hydrogels efter Myocardial Infarkt i en Murine Model

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

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Medicine

Acute Myocardial Infarction in Rats

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

Coronary Artery Ligation and Intramyocardial Injection in a Murine Model of Infarction

Mouse models are a valuable tool for studying acute injury and chronic remodeling of the myocardium in vivo.  With the advent of genetic modifications to ...

Myocardial Infarction and Functional Outcome Assessment in Pigs

Myokardieinfarkt og Functional resultatvurdering i Pigs

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

A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.

En Hydrogel Construct og Fibrin-baserede Lim tilgang til levere Therapeutics i en murin myokardieinfarkt Model.

The murine MI model is widely recognized in the field of cardiovascular disease, and has consistently been used as a first step to test the efficacy of ...

Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction

Primære resultatvurdering i en Pig Model af akut myokardieinfarkt

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

Myocardial Infarction in Neonatal Mice, A Model of Cardiac Regeneration

Myokardieinfarkt i neonatale mus, en model af Cardiac Regeneration

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 ...

Murine Left Anterior Descending (LAD) Coronary Artery Ligation: An Improved and Simplified Model for Myocardial Infarction

Murine Left Anterior Descending LAD Coronary Artery Ligation: An Improved and Simplified Model for Myocardial Infarction

Muse Venstre Anterior Faldende (LAD) kranspulsåreombinding: En forbedret og forenklet model for myokardieinfarkt

Ischemic heart disease (IHD), or acute coronary syndrome (ACS), is one of the leading causes of death in the United States. IHD is characterized by ...

Murine Myocardial Infarction Model using Permanent Ligation of Left Anterior Descending Coronary Artery

Murine myokardieinfarkt model ved hjælp af permanent ligation af venstre anterior faldende koronararterie

Myocardial infarction (MI) and acute coronary diseases are among the most prominent causes of death in population with western lifestyle. The murine ...

A Cryoinjury Model to Study Myocardial Infarction in the Mouse

En Kryoskade model til undersøgelse af myokardieinfarkt i mus

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

Delayed Intramyocardial Delivery of Stem Cells after Ischemia Reperfusion Injury in a Murine Model

Forsinket Intramyokardie levering af stamceller efter Iskæmi Reperfusion Skade i en Murine Model

There is significant interest in the use of stem cells (SCs) for the recovery of cardiac function in individuals with myocardial injuries. Most commonly, ...