Name: lateral chronic cranial window preparation enables in vivo observation following distal middle cerebral artery occlusion in mice
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Description: Watch this Scientific Journal Video about Lateral Chronic Cranial Window Preparation Enables In Vivo Observation Following Distal Middle Cerebral Artery Occlusion in Mice at JoVE.com

VP is a participant in the Charit&#233; Clinical Scientist Program, funded by the Charit&#233; - Universit&#228;tsmedizin Berlin and the Berlin Institute of Health. TB is an SNSF PostDoc Mobility fellow. The authors receive grant support from EinsteinStiftung/A-2012-153 to PV.

ETIK ERKLÆRING: Eksperimenter med forsøgsdyr blev udført i overensstemmelse med de retningslinjer og bestemmelser fastsat af Landesamt fuer Gesundheit und Soziales, Berlin, Tyskland (G0298 / 13) og de ANKOMMER kriterier, som er relevant. Til denne undersøgelse 10- til 12-uger gamle C57BL / 6J mus blev anvendt. 1. Lateral Kronisk Kranie Window Forberedelse <ol><li> Udfør anæstesi med en subkutan injektion af ketamin (90 mg / kg) og xylazin (10 mg / kg). Test for passende sedation med ...

<ol>
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Y. <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+intravital+thinned+skull+and+cranial+window+approaches+to+study+CNS+immunobiology+in+the+mouse+cortex.">Comparison of intravital thinned skull and cranial window approaches to study CNS immunobiology in the mouse cortex.</a> Intravital. 3 (2), (2014).</li><li>Balkaya, 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=Assessing+post-stroke+behavior+in+mouse+models+of+focal+ischemia.">Assessing post-stroke behavior in mouse models of focal ischemia.</a> J Cereb Blood Flow Metab. 33 (3), 330-338 (2013).</li><li>Balkaya, M., Kr&#246;ber, J., Gertz, K., Peruzzaro, S., Endres, M. <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+long-term+functional+outcome+in+a+murine+model+of+mild+brain+ischemia.">Characterization of long-term functional outcome in a murine model of mild brain ischemia.</a> J Neurosci Methods. 213 (2), 179-187 (2013).</li><li>Freret, T., Bouet, 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=Behavioral+deficits+after+distal+focal+cerebral+ischemia+in+mice:+Usefulness+of+adhesive+removal+test.">Behavioral deficits after distal focal cerebral ischemia in mice: Usefulness of adhesive removal test.</a> Beh Neurosci. 123 (1), 224-230 (2009).</li><li>Liu, S., Zhen, G., Meloni, B. P., Campbell, K., Winn, H. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=RODENT+STROKE+MODEL+GUIDELINES+FOR+PRECLINICAL+STROKE+TRIALS+(1ST+EDITION).">RODENT STROKE MODEL GUIDELINES FOR PRECLINICAL STROKE TRIALS (1ST EDITION).</a> J Exp Stroke Trans Med. 2 (2), 2-27 (2009).</li><li>Florian, B., Vintilescu, 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=Long-term+hypothermia+reduces+infarct+volume+in+aged+rats+after+focal+ischemia.">Long-term hypothermia reduces infarct volume in aged rats after focal ischemia.</a> Neurosci Lett. 438 (2), 180-185 (2008).</li><li>Noor, R., Wang, C. X., Shuaib, A. <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+hyperthermia+on+infarct+volume+in+focal+embolic+model+of+cerebral+ischemia+in+rats.">Effects of hyperthermia on infarct volume in focal embolic model of cerebral ischemia in rats.</a> Neurosci Lett. 349 (2), 130-132 (2003).</li><li>Barber, P. A., Hoyte, L., Colbourne, F., Buchan, A. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Temperature-regulated+model+of+focal+ischemia+in+the+mouse:+a+study+with+histopathological+and+behavioral+outcomes.">Temperature-regulated model of focal ischemia in the mouse: a study with histopathological and behavioral outcomes.</a> Stroke. 35 (7), 1720-1725 (2004).</li><li>Shin, H. 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Slagtilfælde er blandt de vigtigste årsager til langvarig invaliditet og død på verdensplan en. Beyond akut behandling, undersøger nye metoder og mekanismer til at fremskynde og forbedre inddrivelsen efter slagtilfælde er stadig en førsteklasses medicinsk mål 7. Eksperimentelle slagtilfælde forskere ofte anvender gnaver modeller af fokal cerebral iskæmi. Faktisk modeller inducerer forbigående eller permanent MCAo efterligner en af de mest almindelige typer af fokal cerebral iskæmi hos p...

Stroke is among the principal causes of long-term disability and death worldwide1, coming second after coronary heart disease. In addition, stroke is the primary cause of long-term disability, underscoring its tremendous socioeconomic impact6-8. Beyond acute treatment, investigating new approaches and mechanisms to accelerate and enhance recovery after stroke remains a prime medical goal7. 
In the last few decades, data from experimental stroke research has contributed substantially to understanding the complex pathophysiological cascades triggered by ischemia9,10. Excitotoxicity, apoptosis, peri-infarct depolarization, and inflammation have been identified as the most relevant mediators of cell death following focal cerebral ischemia. Moreover, using animal models of cerebral ischemia, important concepts, diagnostic modalities, and therapeutic approaches have been developed and validated (e.g., "penumbra" and thrombolysis)11.
The availability of experimental stroke models, combined with non-invasive imaging modalities (e.g., magnetic resonance imaging (MRI), computed tomography, or laser speckle contrast analysis), enables the researcher to investigate hyperacute and chronic pathophysiological changes induced by the ischemic insult in a longitudinal manner12. Along with studying the spatiotemporal profile of the evolving lesion, changes resembling neuronal plasticity can be investigated and correlated to functional outcomes and histological findings. Within the last few years, further methodological advances have been made using the combination of cerebral ischemia models and in vivo microscopy via cranial windows13. These new techniques allow investigators to analyze the neurovascular unit at the cellular and molecular level, with great analytic power in the acute, subacute, and chronic phases following focal cerebral ischemia14. Moreover, in vivo microscopy imaging of microcirculatory dynamics has revealed novel aspects of cerebral microvasculature function and angioarchitecture, with significant pathophysiological relevance15-17. 
In this protocol, we present how to perform a chronic CW preparation lateral to the sagittal sinus and how to surgically induce a distal stroke underneath the window. This mouse model can be applied to sequential imaging of acute, subacute, and chronic changes following focal cerebral ischemia via epi-illuminating, confocal laser scanning, and two-photon intravital microscopy.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>Binocular surgical microscope</td>
			<td>Zeiss</td>
			<td>Stemi 2000 C</td>
			<td></td>
		</tr>
		<tr>
			<td>Light source for microscope</td>
			<td>Zeiss</td>
			<td>CL 6000 LED</td>
			<td></td>
		</tr>
		<tr>
			<td>Heating pad with rectal probe</td>
			<td>FST</td>
			<td>21061-10</td>
			<td></td>
		</tr>
		<tr>
			<td>Stereotactic frame</td>
			<td>Kopf</td>
			<td>Model 930</td>
			<td></td>
		</tr>
		<tr>
			<td>Anaethesia system for isoflurane</td>
			<td>Draeger</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Isoflurane</td>
			<td>Abott</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Dumont forceps #5</td>
			<td>FST</td>
			<td>11251-10</td>
			<td></td>
		</tr>
		<tr>
			<td>Dumont forceps #7</td>
			<td>FST</td>
			<td>11271-30</td>
			<td></td>
		</tr>
		<tr>
			<td>Bipolar Forceps</td>
			<td>Erbe</td>
			<td>20195-501</td>
			<td></td>
		</tr>
		<tr>
			<td>Bipolar Forceps&#160;</td>
			<td colspan="2">Erbe&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; 20195-022</td>
			<td></td>
		</tr>
		<tr>
			<td>Microdrill</td>
			<td colspan="2">FST&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; 18000-17&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</td>
			<td></td>
		</tr>
		<tr>
			<td>Needle holder</td>
			<td>FST</td>
			<td>12010-14</td>
			<td></td>
		</tr>
		<tr>
			<td>5-0 silk suture</td>
			<td>Feuerstein, Suprama</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>7-0 silk suture</td>
			<td>Feuerstein,Suprama</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>8-0 silk suture</td>
			<td>Feuerstein, Suprama</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Veterinary Recovery Chamber</td>
			<td>Peco Services</td>
			<td>V1200</td>
			<td></td>
		</tr>
	</tbody>
</table>

lateral chronic cranial window preparation enables in vivo observation following distal middle cerebral artery occlusion in mice

Fokal cerebral iskæmi (dvs. iskæmisk slagtilfælde) kan medføre stor hjerneskade, hvilket fører til et tab af neuronal funktion og følgelig med en masse motoriske og kognitive handicap. Dens høje forekomst udgør en alvorlig sundheds- byrde, som slagtilfælde er blandt de vigtigste årsager til langvarig invaliditet og død på verdensplan en. Inddrivelse af neuronal funktion er, i de fleste tilfælde, kun delvis. Indtil videre er behandlingsmuligheder meget begrænsede, især på grund af den snævre tidsvindue for trombolyse 2,3. Bestemmelse metoder til at fremskynde helbredelse fra slagtilfælde fortsat en førsteklasses medicinsk mål; Dette har dog været hæmmet af utilstrækkelige mekanistiske indsigt i helbredelsesprocessen. Eksperimentelle slagtilfælde forskere ofte anvender gnaver modeller af fokal cerebral iskæmi. Ud over den akutte fase, er slagtilfælde forskning i stigende grad fokuseret på sub-akut og kronisk fase efter cerebral iskæmi. De fleste takts forskere anvender permanent eller tranSIENT okklusion af MCA hos mus eller rotter. Hos patienter, tilstopninger af MCA er blandt de hyppigste årsager til iskæmisk slagtilfælde 4. Udover proximal okklusion af MCA hjælp glødetråden model, kirurgisk okklusion af den distale MCA er sandsynligvis den mest brugte model i eksperimentel slagtilfælde forskning 5. Okklusion af en distal (til forgreningen af ​​lenticulo-striate arterier) MCA gren reservedele typisk striatum og primært påvirker neocortex. Vessel okklusion kan være permanent eller forbigående. Høj reproducerbarhed læsionsvolumen og meget lavere dødelighed i forhold til den langsigtede resultat er de vigtigste fordele ved denne model. Her viser vi, hvordan man udfører en kronisk kraniel vindue (CW) forberedelse lateralt til sinus sagittalis, og bagefter hvordan man kirurgisk inducere en distal slagtilfælde under vinduet ved anvendelse af en kraniotomi tilgang. Denne fremgangsmåde kan anvendes til sekventiel billeddannelse af akutte og kroniske forandringer efter iskæmi viaepi-belysning, konfokal laserscanning, og to-foton intravital mikroskopi.

Tidslinjen og repræsentative resultater er vist i figur 2 og 3. Den kraniel vindue forberedelse, med en lille kranie vindue lateral til den overlegne sagittal sinus (Figur 2 B, C, D) resulterer i en meget lav dødelighed og sygelighed sats, når udføres af en erfaren kirurg. Alle de 10 dyr overlevede, og alle kroniske CW kunne anvendes til høj kvalitet billeddannelse, selv 28 dage efter operationen. Der var ikke noget problem med sår...

Watch this Scientific Journal Video about Lateral Chronic Cranial Window Preparation Enables In Vivo Observation Following Distal Middle Cerebral Artery Occlusion in Mice at JoVE.com

Lateral Chronic Cranial Window Preparation Enables In Vivo Observation Following Distal Middle Cerebral Artery Occlusion in Mice

Kirurgisk okklusion af en distal midtcerebralarterie gren (MCAo) er et hyppigt anvendt model i eksperimentel slagtilfælde forskning. Dette håndskrift beskriver den grundlæggende teknik for permanent MCAO kombineret med indsættelse af en lateral kraniel vindue, der giver mulighed for langsgående intravital mikroskopi i mus.

Lateral Kronisk Kranie Window Forberedelse Aktiverer<em&gt; In vivo</em&gt; Observation Efter Distal mellem-cerebral arterieokklusion i mus

Focal cerebral ischemia (i.e., ischemic stroke) may cause major brain injury, leading to a severe loss of neuronal function and consequently to a host of ...

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Lateral Chronic Cranial Window Preparation Enables In Vivo Observation Following Distal Middle Cerebral Artery Occlusion in Mice

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Piezo High Accuracy Surgical Osteal Removal (PHASOR): A Technique for Improved Cranial Window Surgery in Mice

Piezo High Accuracy Surgical Osteal Removal PHASOR: A Technique for Improved Cranial Window Surgery in Mice

Piezo høj nøjagtighed kirurgisk Osteal fjernelse (PHASOR): En teknik til forbedret kraniel vindue kirurgi i mus

Multiphoton microscopy has been widely adapted for imaging neurons in vivo. Repeated imaging requires implantation of a cranial window or repeated ...

Modeling Stroke in Mice: Transient Middle Cerebral Artery Occlusion via the External Carotid Artery

Modellering Slagtilfælde i mus: Forbigående Middle Cerebral Arterie Okklusion via den eksterne halspulsåre

Stroke is the third most common cause of mortality and the leading cause of acquired adult disability in developed countries. To date, therapeutic options ...

Implantation of a Cranial Window for Repeated In Vivo Imaging in Awake Mice

Implantation of a Cranial Window for Repeated In Vivo Imaging in Awake Mice

Implantation af et kranievindue til gentagen In Vivo-billeddannelse i vågne mus

To fully understand the cellular physiology of neurons and glia in behaving animals, it is necessary to visualize their morphology and record their ...

Construction and Implementation of Carbon Fiber Microelectrode Arrays for Chronic and Acute In Vivo Recordings

Construction and Implementation of Carbon Fiber Microelectrode Arrays for Chronic and Acute In Vivo Recordings

Konstruktion og implementering af kulfibermikroelektrodesystemer til kroniske og akutte In Vivo-optagelser

Multichannel electrode arrays offer insight into the working brain and serve to elucidate neural processes at the single-cell and circuit levels. ...

A Model for Encephalomyosynangiosis Treatment after Middle Cerebral Artery Occlusion-Induced Stroke in Mice

En model for encephalomyosynangiose behandling efter mellemcerebral arterie okklusionsinduceret slagtilfælde hos mus

There is no effective treatment available for most patients suffering with ischemic stroke, making development of novel therapeutics imperative. The ...

In Vivo Wide-Field and Two-Photon Calcium Imaging from a Mouse Using a Large Cranial Window

In Vivo Wide-Field and Two-Photon Calcium Imaging from a Mouse Using a Large Cranial Window

In vivo Bredfelts- og to-foton calciumbilleddannelse fra en mus ved hjælp af et stort kranievindue

Wide-field calcium imaging from the mouse&#39;s neocortex allows one to observe cortex-wide neural activity related to various brain functions. On the ...

Assessment of Thermal Damage from Robot-Drilled Craniotomy for Cranial Window Surgery in Mice

Vurdering af termiske skader fra robotboret kraniotomi til kranial vindueskirurgi hos mus

Cranial window surgery allows for the imaging of brain tissue in live mice with the use of multiphoton or other intravital imaging techniques. However, ...

Establishing a Transcranial Middle Cerebral Artery Occlusion Mice Model

A Modified Transcranial Middle Cerebral Artery Occlusion Model to Study Stroke Outcomes in Aged Mice

Innovative Techniques and Future Directions in Stroke Research (Video) | JoVE

En modificeret transkraniel midterste cerebral arterieokklusionsmodel til undersøgelse af slagtilfælderesultater hos ældre mus

In experimental stroke research, middle cerebral artery occlusion (MCAO) with an intraluminal filament is widely used to model ischemic stroke in mice. ...