Name: biodegradable magnesium stent treatment of saccular aneurysms in a rat model - introduction of the surgical technique
Uploaded: 2017-10-01T13:00:00
Description: Watch this Scientific Journal Video about Biodegradable Magnesium Stent Treatment of Saccular Aneurysms in a Rat Model - Introduction of the Surgical Technique at JoVE.com

Vi takker Eugen Hofmann og Philine Zumstein for deres utmerket kundestøtte og for å dele sin ekspertise i stent søknadsprosedyrer. Vi takker Majlinda Kalanderi for anatomiske tegningen.

Mannlige Wistar rotter med gjennomsnittlig vekt 592 g (±50 SD) og gjennomsnittsalderen for 20 uker ble plassert i dyr fasiliteter ved en romtemperatur 22-24 ° C og tolv timers lys/mørke syklus, med gratis tilgang til vann fra springen og et pellet kosthold. Dyrene fikk omsorg fra mennesker institusjonelle retningslinjer. Eksperimentene ble godkjent av komiteen for dyr av Kantonen Bern, Sveits (være 102/13). Vi strengt fulgte anbefalingene for dyr forskning: rapportering I Vivo eksperimenter (ANKOMME retnings...

<ol>
	<li>Molyneux, 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=International+Subarachnoid+Aneurysm+Trial+(ISAT)+of+neurosurgical+clipping+versus+endovascular+coiling+in+2143+patients+with+ruptured+intracranial+aneurysms:+a+randomised+trial.">International Subarachnoid Aneurysm Trial (ISAT) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: a randomised trial.</a> Lancet. 360 (9342), 1267-1274 (2002).</li><li>Molyneux, A. 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=International+subarachnoid+aneurysm+trial+(ISAT)+of+neurosurgical+clipping+versus+endovascular+coiling+in+2143+patients+with+ruptured+intracranial+aneurysms:+a+randomised+comparison+of+effects+on+survival,+dependency,+seizures,+rebleeding,+subgroups,+and+aneurysm+occlusion.">International subarachnoid aneurysm trial (ISAT) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: a randomised comparison of effects on survival, dependency, seizures, rebleeding, subgroups, and aneurysm occlusion.</a> Lancet. 366 (9488), 809-817 (2005).</li><li>Marbacher, 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=Intraluminal+cell+transplantation+prevents+growth+and+rupture+in+a+model+of+rupture-prone+saccular+aneurysms.">Intraluminal cell transplantation prevents growth and rupture in a model of rupture-prone saccular aneurysms.</a> Stroke. 45 (12), 3684-3690 (2014).</li><li>Marbacher, S., Marjamaa, J., Abdelhameed, E., Hernesniemi, J., Niemela, M., Frosen, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Helsinki+rat+microsurgical+sidewall+aneurysm+model.">The Helsinki rat microsurgical sidewall aneurysm model.</a> J Vis Exp. (92), e51071 (2014).</li><li>Marbacher, 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=Loss+of+mural+cells+leads+to+wall+degeneration,+aneurysm+growth,+and+eventual+rupture+in+a+rat+aneurysm+model.">Loss of mural cells leads to wall degeneration, aneurysm growth, and eventual rupture in a rat aneurysm model.</a> Stroke. 45 (1), 248-254 (2014).</li><li>Pritchett-Corning, K. R., Luo, Y., Mulder, G. B., White, W. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Principles+of+rodent+surgery+for+the+new+surgeon.">Principles of rodent surgery for the new surgeon.</a> J Vis Exp. (47), (2011).</li><li>Bernal, 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=Guidelines+for+rodent+survival+surgery.">Guidelines for rodent survival surgery.</a> J Invest Surg. 22 (6), 445-451 (2009).</li><li>Flege, 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=Development+and+characterization+of+a+coronary+polylactic+acid+stent+prototype+generated+by+selective+laser+melting.">Development and characterization of a coronary polylactic acid stent prototype generated by selective laser melting.</a> J Mater Sci Mater Med. 24 (1), 241-255 (2013).</li><li>Zartner, P., Cesnjevar, R., Singer, H., Weyand, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=First+successful+implantation+of+a+biodegradable+metal+stent+into+the+left+pulmonary+artery+of+a+preterm+baby.">First successful implantation of a biodegradable metal stent into the left pulmonary artery of a preterm baby.</a> Catheter Cardiovasc Interv. 66 (4), 590-594 (2005).</li><li>Hakamata, 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=Green+fluorescent+protein-transgenic+rat:+a+tool+for+organ+transplantation+research.">Green fluorescent protein-transgenic rat: a tool for organ transplantation research.</a> Biochem Biophys Res Commun. 286 (4), 779-785 (2001).</li><li>Bouzeghrane, F., Naggara, O., Kallmes, D. F., Berenstein, A., Raymond, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=International+Consortium+of+Neuroendovascular+C.+In+vivo+experimental+intracranial+aneurysm+models:+a+systematic+review.">International Consortium of Neuroendovascular C. In vivo experimental intracranial aneurysm models: a systematic review.</a> AJNR Am J Neuroradiol. 31 (3), 418-423 (2010).</li><li>Aquarius, R., Smits, D., Gounis, M. J., Leenders, W. P., De Vries, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Flow+diverter+implantation+in+a+rat+model+of+sidewall+aneurysm:+a+feasibility+study.">Flow diverter implantation in a rat model of sidewall aneurysm: a feasibility study.</a> J Neurointerv Surg. , (2017).</li><li>Indolfi, 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=A+new+rat+model+of+small+vessel+stenting.">A new rat model of small vessel stenting.</a> Basic Res Cardiol. 95 (3), 179-185 (2000).</li><li>Oyamada, 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=Trans-iliac+rat+aorta+stenting:+a+novel+high+throughput+preclinical+stent+model+for+restenosis+and+thrombosis.">Trans-iliac rat aorta stenting: a novel high throughput preclinical stent model for restenosis and thrombosis.</a> J Surg Res. 166 (1), e91-e95 (2011).</li><li>Kwon, J. 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=Comparison+of+bare+metal+stent+and+paclitaxel-eluting+stent+using+a+novel+rat+aorta+stent+model.">Comparison of bare metal stent and paclitaxel-eluting stent using a novel rat aorta stent model.</a> J Vet Sci. 12 (2), 143-149 (2011).</li><li>Rouer, M., Meilhac, O., Delbosc, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+new+murine+model+of+endovascular+aortic+aneurysm+repair.">A new murine model of endovascular aortic aneurysm repair.</a> J Vis Exp. (77), e50740 (2013).</li><li>Hardhammar, 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=Reduction+in+thrombotic+events+with+heparin-coated+Palmaz-Schatz+stents+in+normal+porcine+coronary+arteries.">Reduction in thrombotic events with heparin-coated Palmaz-Schatz stents in normal porcine coronary arteries.</a> Circulation. 93 (3), 423-430 (1996).</li><li>Guerrero, 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=Antioxidant+effects+of+a+single+dose+of+acetylsalicylic+acid+and+salicylic+acid+in+rat+brain+slices+subjected+to+oxygen-glucose+deprivation+in+relation+with+its+antiplatelet+effect.">Antioxidant effects of a single dose of acetylsalicylic acid and salicylic acid in rat brain slices subjected to oxygen-glucose deprivation in relation with its antiplatelet effect.</a> Neurosci Lett. 358 (3), 153-156 (2004).</li><li>Niitsu, 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=Repeat+oral+dosing+of+prasugrel,+a+novel+P2Y12+receptor+inhibitor,+results+in+cumulative+and+potent+antiplatelet+and+antithrombotic+activity+in+several+animal+species.">Repeat oral dosing of prasugrel, a novel P2Y12 receptor inhibitor, results in cumulative and potent antiplatelet and antithrombotic activity in several animal species.</a> Eur J Pharmacol. 579 (1-3), 276-282 (2008).</li><li>Kastrati, 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=Intracoronary+stenting+and+angiographic+results:+strut+thickness+effect+on+restenosis+outcome+(ISAR-STEREO)+trial.">Intracoronary stenting and angiographic results: strut thickness effect on restenosis outcome (ISAR-STEREO) trial.</a> Circulation. 103 (23), 2816-2821 (2001).</li><li>Lowe, H. C., James, B., Khachigian, L. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+novel+model+of+in-stent+restenosis:+rat+aortic+stenting.">A novel model of in-stent restenosis: rat aortic stenting.</a> Heart. 91 (3), 393-395 (2005).</li><li>Finn, A. V., 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+novel+rat+model+of+carotid+artery+stenting+for+the+understanding+of+restenosis+in+metabolic+diseases.">A novel rat model of carotid artery stenting for the understanding of restenosis in metabolic diseases.</a> J Vasc Res. 39 (5), 414-425 (2002).</li></ol>

Bioabsorbable stents og dyr modeller De siste årene er den generelle trenden i medisin fra permanent implantater (som blir værende i pasientens kropp for resten av livet) til bio-absorberbare materialer. Magnesium stents, spesielt er allerede ganske etablert i kardiologi8,9. Dessverre har disse stents ennå ikke blitt testet for andre programmer, for eksempel cerebrovascular sykdommer. Derfor besluttet vi å studere brukbarheten av bioabsorb...

Hjernehinneblødning på grunn av en sprukket intrakranielt aneurisme er forbundet med en høy dødelighet og dårlig nevrologiske utfallet i mange overlevende. Det finnes to generelle tilnærminger til occlude IA: enten Mikrokirurgiske klipping (som krever operative eksponering av aneurismet), eller endovascular okklusjon. Som mindre invasiv endovascular coil behandling av smale-necked IA har vist seg å bli assosiert med noe lavere sykelighet (spesielt i bakre sirkulasjon1,2), endovascular behandlingstilbud har blitt den foretrukket modalitet av mange neurosurgical sentre. Mange enheter er utviklet for å utvide indikasjoner på endovascular behandling og overvinne den viktigste begrensningen for IA tilbakefall etter coiling. Intrakranielt stents er særlig lovende til å overvinne disse begrensningene som de tjene som et stillas for neo-endothelization og coil herniation forebygging, samt beskytte arteria overordnede og forbedre intraluminal intraaneurysmal trombose skyldes reduksjon av blod tilsig. Det er behov for å studere romanen intrakranielt stents i en rimelig dyr modell; både makroskopisk og molekylære nivåer.
Målet med denne studien var å utforme en trygg, rask og standardisert kirurgisk teknikk for stent program i en allerede etablerte saccular aneurisme modell i rotter3,4,5. I det nåværende prosjektet vurdert vi rollen nedbrytbart magnesium stent.

<table style="border-collapse:collapse;width:510pt" width="680">
	<colgroup>
		<col style="width:220pt" width="293" />
		<col style="width:115pt" width="153" />
		<col span="2" style="width:88pt" width="117" />
	</colgroup>
	<tbody>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="width:220pt;height:15.0pt" width="293">Medetomidine</td>
			<td class="xl17" style="width:115pt" width="153"></td>
			<td class="xl17" style="width:88pt" width="117"></td>
			<td class="xl17" style="width:88pt" width="117">any generic</td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Ketamin</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17">any generic</td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Buprenorphine</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17">any generic</td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Phosphate buffered saline</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Sodium dodecyl sulfate (0.1%)</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">3-0 resorbable suture</td>
			<td class="xl17">Ethicon Inc., USA</td>
			<td class="xl17">VCP428G</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">5-0 non absorbable suture</td>
			<td class="xl17">Ethicon Inc., USA</td>
			<td class="xl17">8618G</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">6-0 non-absorbable suture</td>
			<td class="xl17">B. Braun, Germany</td>
			<td class="xl17">C0766070</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">9-0 non-absorbable suture</td>
			<td class="xl17">B. Braun, Germany</td>
			<td class="xl17">G1111140</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">10-0 non-absorbable suture</td>
			<td class="xl17">Covidien, USA</td>
			<td class="xl17">N2530 Monosof</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Operation microscope</td>
			<td class="xl17">Zeiss, Germany</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Digital microscope camera</td>
			<td class="xl17">Sony, Japan</td>
			<td class="xl17">HXR-MC1P</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Standard surgical instruments</td>
			<td class="xl17"></td>
			<td class="xl17">multiple</td>
			<td class="xl17">see protocol 7.a</td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Microsurgical instruments</td>
			<td class="xl17"></td>
			<td class="xl17">multiple</td>
			<td class="xl17">see protocol 7.b</td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Vascular clip applicator</td>
			<td class="xl17">B. Braun, Germany</td>
			<td class="xl17">FT495T</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Temporary vascular clamps</td>
			<td class="xl17">B. Braun, Germany</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">19G Puncture needle&#160;</td>
			<td class="xl17">Angiomed GmbH, Germany</td>
			<td align="right" class="xl17">15820010</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Hydrophobic guide wire</td>
			<td class="xl17">Cook Medical, USA</td>
			<td class="xl17">G00650</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">4F sheat</td>
			<td class="xl17">Cordis Corporation, USA</td>
			<td class="xl17">504-604A</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Inflation syringe</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Laboratory shaker</td>
			<td class="xl17">Stuart</td>
			<td class="xl17">SRT6</td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Magnesium Stent 2.5/6 AMS with Polymer coating</td>
			<td class="xl17">Biotronik, Switzerland</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="21" style="height:15.75pt">
			<td class="xl18" height="21" style="width:220pt;height:15.75pt" width="293">Surgery drape&#160;</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Sterile cellulose swabs</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Syringes 1 ml and 2 ml</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Hollow needles 18G and 26G</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Isotonic sodium chloride</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Microtubes</td>
			<td class="xl17"></td>
			<td class="xl17"></td>
			<td class="xl17"></td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Eye ointment</td>
			<td class="xl17">Bausch + Lomb Inc, USA</td>
			<td class="xl17">Lacrinorm</td>
			<td class="xl17">any generic</td>
		</tr>
		<tr height="20" style="height:15.0pt">
			<td class="xl17" height="20" style="height:15.0pt">Small animal shaver</td>
			<td class="xl19"></td>
			<td class="xl19"></td>
			<td class="xl19"></td>
		</tr>
	</tbody>
</table>

biodegradable magnesium stent treatment of saccular aneurysms in a rat model - introduction of the surgical technique

Den jevn progess i armamentarium teknikker tilgjengelig for endovascular behandling av intrakranielt aneurismer krever rimelig og reproducable eksperimentelle dyr modeller å teste romanen embolisering materialer som stents og flyt avledninger. Sikte på å presentere prosjektet var å utforme en trygg, rask, og standardisert kirurgisk teknikk for stent assistert embolisering av saccular aneurismer i en rotte dyr modell.
Saccular aneurismer ble opprettet fra en arteriell pode fra synkende aorta. Aneurismer ble microsurgically transplantert gjennom ende-til-side anastomose til infrarenal abdominal aorta med en syngenic mannlige Wistar rotte veiing > 500 g. Etter aneurisme anastomose, aneurisme embolisering ble utført med ballong utvides magnesium stents (2,5 mm x 6 mm). Stent systemet ble retrograd fra lavere abdominal aorta bruker en modifisert Seldinger teknikk.
Etter en pilot rekke 6 dyr, totalt 67 rotter ble operert i henhold til etablerte standard operasjonsprosedyrer. Mener kirurgi, mener anastomose tid, og mener suturing tid av arterien punktering området var 167 ± 22 min, 26 ± 6 min og 11 ± 5 min, henholdsvis. Dødelighet var 6% (n = 4). Den sykelighet var 7,5% (n = 5), og i stent trombose ble funnet i 4 tilfeller (n = 2 tidlig, n = 2 sent i stent blodpropp).
Resultatene viser muligheten for standardisert stent okklusjon av saccular sideveggen aneurismer i rotter - med lav forekomst av sykelighet og dødelighet. Denne stent embolisering prosedyren kombinerer muligheten til å studere romanen begrepene stent eller flyt omkasteren basert enheter samt de molekylære aspektene av healing.

Gjennomsnittsvarighet av kirurgi ble 167 (± 22) min, 26 (± 6) min som var nødvendig for aneurisme opprettelse og en ytterligere 23 (± 7) min kreves for stent program og rekonstruksjon av arteriotomy (Figur 3).
Dødelighet og sykelighet makroskopisk i stent trombose var primære endepunktene på studien. Regelmessig oppfølging periodene var 7 dager (n = 28), og 21 dager (n = 32) henholdsvis. Dø...

Watch this Scientific Journal Video about Biodegradable Magnesium Stent Treatment of Saccular Aneurysms in a Rat Model - Introduction of the Surgical Technique at JoVE.com

Biodegradable Magnesium Stent Treatment of Saccular Aneurysms in a Rat Model - Introduction of the Surgical Technique

Reproducable eksperimentell dyremodeller er nødvendig for testing av romanen embolisering materialer, som er utformet for å behandle endovascular okklusjon av intrakranielt aneurismer (IA). Denne studien som mål å utvikle en sikker og standardisert kirurgisk teknikk for stent assistert embolisering av saccular aneurismer i en rotte dyr modell.

Biologisk nedbrytbart Magnesium Stent behandling av Saccular aneurismer i en rotte modell - innføring av kirurgiske teknikken

The steady progess in the armamentarium of techniques available for endovascular treatment of intracranial aneurysms requires affordable and reproducable ...

Research

JoVE Journal

Neuroscience

Application of a NMDA Receptor Conductance in Rat Midbrain Dopaminergic Neurons Using the Dynamic Clamp Technique

Neuroscientists study the function of the brain by investigating how neurons in the brain communicate. Many investigators look at changes in the ...

Visual Evoked Potential Recording in a Rat Model of Experimental Optic Nerve Demyelination

Visuell fremkalt potensial Opptak i en rottemodell of Experimental Optic Nerve Demyelinisering

The visual evoked potential (VEP) recording is widely used in clinical practice to assess the severity of optic neuritis in its acute phase, and to ...

The Use of Trace Eyeblink Classical Conditioning to Assess Hippocampal Dysfunction in a Rat Model of Fetal Alcohol Spectrum Disorders

Bruk av spor Eyeblink klassisk betinging å vurdere hippocampus dysfunksjon i en rotte modell av Fetal Alcohol Spectrum Disorders

Neonatal rats were administered a relatively high concentration of ethyl alcohol (11.9% v/v) during postnatal days 4-9, a time when the fetal brain ...

The Optical Fractionator Technique to Estimate Cell Numbers in a Rat Model of Electroconvulsive Therapy

Den optiske fraksjonatorteknikken til å beregne celletal i en rottemodel for elektrokonvulsiv terapi

Stereological methods are designed to describe quantitative parameters without making assumptions about size, shape, orientation and distribution of cells ...

A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder

En protokoll for å måle Cue reaktivitet i en rotte modell av kokain bruk lidelse

Cocaine use disorder (CUD) follows a trajectory of repetitive self-administration during which previously neutral stimuli gain incentive value. Cue ...

Simple Surgical Induction of Conductive Hearing Loss with Verification Using Otoscope Visualization and Behavioral Clap Startle Response in Rat

Enkel kirurgisk induksjon av ledende hørselstap med verifisering bruke Otoskop visualisering og Behavioral klapp skremme Response i Rat

Conductive hearing loss (CHL) is a prevalent hearing impairment in humans. The goal of the protocol is to describe a simple surgical procedure for ...

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration

Ansikts nerve kirurgi i rottemodellen for å studere aksonal hemming og regenerering

This protocol describes consistent and reproducible methods to study axonal regeneration and inhibition in a rat facial nerve injury model. The facial ...

A Revised Surgical Approach to Induce Endolymphatic Hydrops in the Guinea Pig

En revidert kirurgisk tilnærming til indusere endolymphatic hydrops i Marsvin

Endolymphatic hydrops is an enlargement of scala media that is most often associated with Meniere&#39;s disease, though the pathophysiologic mechanism(s) ...

Applying the RatWalker System for Gait Analysis in a Genetic Rat Model of Parkinson's Disease

Bruk av RatWalker-systemet for ganganalyse i en genetisk rottemodell av Parkinsons sykdom

Parkinson's disease (PD) is a progressive neurodegenerative disorder caused by the loss of dopaminergic (DA) neurons in the substantia nigra pars ...

Establishment of a Rat Model of Superior Sagittal-Sinus Occlusion via a Thread-Embolism Method

Etablering av en rottemodell av overlegen skytten-sinus okklusjon via en tråd-embolisme metode

The mechanisms contributing to the natural onset of cerebral venous sinus thrombosis (CVST) are mostly unknown, and a variety of uncontrollable factors ...