Name: continuous video electroencephalogram during hypoxia-ischemia in neonatal mice
Uploaded: 2020-06-11T15:00:00
Description: Watch this Scientific Journal Video about Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice at JoVE.com

Vi anerkender følgende finansieringskilder: NIH NINDS – K08NS101122 (JB), R01NS040337 (JK), R01NS044370 (JK), University of Virginia School of Medicine (JB).

Alle dyreforsøg blev godkendt af Institutional Animal Care and Use Committee (IACUC) fra University of Virginia.
1. Elektrodebygning/kabelbygning
<ol><li>Brug en unipolar isoleret ledning i rustfrit stål (0,005" bar diameter, 0,008" belagt) til at lave en elektrode, der er forbundet med et kvindeligt sokkelstik (kvindelig beholderstik 0,079).</li>
	<li>Brug et specielt skræddersyet kabel til at forbinde dyr til forstærkeren.<ol>
<li>Vedhæft en mandlig 4-bens stik (Mandlige stik 0,079") ...

<ol>
	<li>Vasudevan, C., Levene, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Epidemiology+and+aetiology+of+neonatal+seizures.">Epidemiology and aetiology of neonatal seizures.</a> Seminars in Fetal &amp; Neonatal Medicine. , (2013).</li><li>Volpe, 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=Neonatal+Seizures.">Neonatal Seizures.</a> Volpe's Neurology of the Newborn. , 275-321 (2018).</li><li>Shankaran, 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=Network+EKSNNR.+Childhood+outcomes+after+hypothermia+for+neonatal+encephalopathy.">Network EKSNNR. Childhood outcomes after hypothermia for neonatal encephalopathy.</a> New England Journal of Medicine. 366 (22), 2085-2092 (2012).</li><li>Pappas, 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=Cognitive+outcomes+after+neonatal+encephalopathy.">Cognitive outcomes after neonatal encephalopathy.</a> Pediatrics. 135 (3), 624-634 (2015).</li><li>van Schie, P. 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=Long-term+motor+and+behavioral+outcome+after+perinatal+hypoxic-ischemic+encephalopathy.">Long-term motor and behavioral outcome after perinatal hypoxic-ischemic encephalopathy.</a> European Journal of Paediatric Neurology. 19 (3), 354-359 (2015).</li><li>Rensing, 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=Longitudinal+analysis+of+developmental+changes+in+electroencephalography+patterns+and+sleep-wake+states+of+the+neonatal+mouse.">Longitudinal analysis of developmental changes in electroencephalography patterns and sleep-wake states of the neonatal mouse.</a> PLoS One. 13 (11), 1-17 (2018).</li><li>Rice, J. E., Vannucci, R. C., Brierley, J. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+influence+of+immaturity+on+hypoxic-ischemic+brain+damage+in+the+rat.">The influence of immaturity on hypoxic-ischemic brain damage in the rat.</a> Annals of Neurology. 9 (2), 131-141 (1981).</li><li>Burnsed, J. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hypoxia-ischemia+and+therapeutic+hypothermia+in+the+neonatal+mouse+brain--a+longitudinal+study.">Hypoxia-ischemia and therapeutic hypothermia in the neonatal mouse brain--a longitudinal study.</a> PLoS One. 10 (3), 0118889 (2015).</li><li>Semple, B. 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=Brain+development+in+rodents+and+humans:+Identifying+benchmarks+of+maturation+and+vulnerability+to+injury+across+species.">Brain development in rodents and humans: Identifying benchmarks of maturation and vulnerability to injury across species.</a> Progress in Neurobiology. , 1-16 (2013).</li><li>Comi, A. 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=Gabapentin+neuroprotection+and+seizure+suppression+in+immature+mouse+brain+ischemia.">Gabapentin neuroprotection and seizure suppression in immature mouse brain ischemia.</a> Pediatric Research. 64 (1), 81-85 (2008).</li><li>Comi, A. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+new+model+of+stroke+and+ischemic+seizures+in+the+immature+mouse.">A new model of stroke and ischemic seizures in the immature mouse.</a> Pediatric Neurology. 31 (4), 254-257 (2004).</li><li>Kadam, S. D., White, A. M., Staley, K. J., Dudek, F. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Continuous+Electroencephalographic+Monitoring+with+Radio-Telemetry+in+a+Rat+Model+of+Perinatal+Hypoxia-Ischemia+Reveals+Progressive+Post-Stroke+Epilepsy.">Continuous Electroencephalographic Monitoring with Radio-Telemetry in a Rat Model of Perinatal Hypoxia-Ischemia Reveals Progressive Post-Stroke Epilepsy.</a> Journal of Neuroscience. 30 (1), 404-415 (2010).</li><li>Burnsed, 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=Neuronal+Circuit+Activity+during+Neonatal+Hypoxic+-+Ischemic+Seizures+in+Mice.">Neuronal Circuit Activity during Neonatal Hypoxic - Ischemic Seizures in Mice.</a> Annals of Neurology. 86, 927-938 (2019).</li><li>Sampath, D., White, A. M., Raol, Y. H. <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+neonatal+seizures+in+an+animal+model+of+hypoxic-ischemic+encephalopathy.">Characterization of neonatal seizures in an animal model of hypoxic-ischemic encephalopathy.</a> Epilepsia. 55 (7), 985-993 (2014).</li><li>Sampath, D., Valdez, R., White, A. M., Raol, Y. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Anticonvulsant+effect+of+flupirtine+in+an+animal+model+of+neonatal+hypoxic-ischemic+encephalopathy.">Anticonvulsant effect of flupirtine in an animal model of neonatal hypoxic-ischemic encephalopathy.</a> Neuropharmacology. 123, 126-135 (2017).</li><li>Kang, S. 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=and+sex-dependent+susceptibility+to+phenobarbital-resistant+neonatal+seizures:+role+of+chloride+co-transporters.">and sex-dependent susceptibility to phenobarbital-resistant neonatal seizures: role of chloride co-transporters.</a> Frontiers in Cellular Neuroscience. 9, 1-16 (2015).</li><li>Zanelli, S., Goodkin, H. P., Kowalski, S., Kapur, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Impact+of+transient+acute+hypoxia+on+the+developing+mouse+EEG.">Impact of transient acute hypoxia on the developing mouse EEG.</a> Neurobiology of Disease. 68, 37-46 (2014).</li><li>Lewczuk, 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=EEG+and+behavior+patterns+during+experimental+status+epilepticus.">EEG and behavior patterns during experimental status epilepticus.</a> Epilepsia. 59 (2), 369-380 (2017).</li><li>Wu, D., Martin, L. J., Northington, F. J., Zhang, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Oscillating+gradient+diffusion+MRI+reveals+unique+microstructural+information+in+normal+and+hypoxia-ischemia+injured+mouse+brains.">Oscillating gradient diffusion MRI reveals unique microstructural information in normal and hypoxia-ischemia injured mouse brains.</a> Magnetic Resonance in Medicine. 72 (5), 1366-1374 (2014).</li></ol>

Vi har præsenteret en model for kontinuerlig video-EEG overvågning i neonatale mus under hypoxisk-iskæmiske anfald. Videoanalyse i forbindelse med EEG tillader karakterisering af beslaglæggelse semiologi. Analyse af EEG giver mulighed for udvinding af effektspektrogrammer og baggrund amplitud analyse.
Korrekt og omhyggelig placering af elektroder er afgørende i denne protokol, da skade under elektrodeplacering eller unøjagtig placering kan påvirke resultaterne betydeligt. Vurdering af n...

Hypoxisk iskæmisk encefalopati (HIE) er en tilstand, der påvirker 1,5 ud af 1000 nyfødte årligt og er den mest almindelige årsag til neonatale anfald1,2. Spædbørn, der overlever, er i fare for forskellige neurologiske handicap såsom cerebral parese, intellektuel handicap, og epilepsi3,4,5.
Dyremodeller spiller en afgørende rolle i forståelsen og undersøgelsen af patofysiologi af hypoxi iskæmi og neonatale anfald6,7. En modificeret Vannucci model bruges til at fremkalde hypoxi iskæmi (HI) på postnatal dag 10 (p10)7,8. Mus hvalpe i denne alder oversætte neurologisk groft til den fulde sigt menneskelige nyfødte9.
Kontinuerlig videoelektrophalografi (EEG) overvågning, der anvendes sammen med denne skadesmodel, giver mulighed for yderligere forståelse og karakterisering af neonatale hypoxiske iskæmiske anfald. Tidligere undersøgelser har brugt forskellige metoder til analyse af neonatale anfald hos gnavere, herunder videooptagelser, begrænsede EEG-optagelser og telemetri EEG-optagelser10,11,12,13,14,15,16. I det følgende manuskript diskuterer vi i dybden processen med at optage kontinuerlig video EEG i museunger under hypoxi-iskæmi. Denne teknik til kontinuerlig video EEG overvågning i neonatale mus hvalpe kunne anvendes til en række sygdom og beslaglæggelse modeller.

<table>
	<tbody>
		<tr>
			<td>SURGERY</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Ball Point Applicator</td>
			<td>Metrex Research</td>
			<td>8300-F</td>
			<td>i-bond applicator</td>
		</tr>
		<tr>
			<td>Cranioplast (Powder/Resin)</td>
			<td>Coltene</td>
			<td>H00383</td>
			<td>Perm Reline/Power</td>
		</tr>
		<tr>
			<td>I-Bond</td>
			<td>Kulzer GmbH, Germany</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>LOOK Silk Suture</td>
			<td>Surgical Specialities Corporation</td>
			<td>SP115</td>
			<td>LOOK SP115 Black Braided Silk Non absorbable surgical suture</td>
		</tr>
		<tr>
			<td>RS-5168 Botvin Forceps</td>
			<td>Roboz Surgical Instrument</td>
			<td>RS5168</td>
			<td>Forcep for surgery/ligation</td>
		</tr>
		<tr>
			<td>RS-5138 Graefe Forceps</td>
			<td>Roboz Surgical Instrument</td>
			<td>RS5138</td>
			<td>Forcep for surgery/ligation</td>
		</tr>
		<tr>
			<td>UV light for I-Bond</td>
			<td>Blast Lite By First Media</td>
			<td>BL778</td>
			<td>UV ligth for I-bond</td>
		</tr>
		<tr>
			<td>Vannas Microdissecting Scissor</td>
			<td>Roboz Surgical Instrument</td>
			<td>RS5618</td>
			<td>Scissor for ligation</td>
		</tr>
		<tr>
			<td>Vet Bond</td>
			<td>3M Vetbond</td>
			<td>1469SB</td>
			<td>Vet Glue</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>HYPOXIA</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Hypoxidial</td>
			<td>Starr Life Science</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Oxygen sensor</td>
			<td>Medical Products</td>
			<td></td>
			<td>MiniOxI- oxygen analyzer/sensor for hypoxia rig</td>
		</tr>
		<tr>
			<td></td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>EEG RECORDING</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Female receptacle connector 0.079&#34;</td>
			<td>Mill-Max Manufacturing Corp</td>
			<td>832-10-024-10-001000</td>
			<td>Ordered from Digikey</td>
		</tr>
		<tr>
			<td>Grass Amplifier</td>
			<td>Natus Neurology Incorporated</td>
			<td></td>
			<td>Grass Product</td>
		</tr>
		<tr>
			<td>LabChart Pro</td>
			<td>ADI Instruments</td>
			<td></td>
			<td>Software to run the system</td>
		</tr>
		<tr>
			<td>Male Socket Connector 0.079&#34;</td>
			<td>Mill-Max Manufacturing Corp</td>
			<td>833-43-024-20-001000</td>
			<td>Ordered from Digikey</td>
		</tr>
		<tr>
			<td>Operational Amplifier</td>
			<td>Texas Instruments, Dallas, TX, USA</td>
			<td>TLC2274CD</td>
			<td>TLC2274 Quad Low&#8208;Noise Rail&#8208;to Rail Operational Amplifier</td>
		</tr>
		<tr>
			<td>Operational Amplifier</td>
			<td>Texas Instruments, Dallas, TX, USA</td>
			<td>TLC2272ACDR</td>
			<td>TLC2274 Quad Low&#8208;Noise Rail&#8208;to Rail Operational Amplifier</td>
		</tr>
		<tr>
			<td>Stainless Steel wire</td>
			<td>A-M Systems</td>
			<td>791400</td>
			<td>0.005&#34; Bare/0.008&#34; Coated 100 ft</td>
		</tr>
		<tr>
			<td>Ultra-Flexible Wire</td>
			<td>McMaster-Carr</td>
			<td>9564T1</td>
			<td>36 Gauze wire of various color</td>
		</tr>
	</tbody>
</table>

continuous video electroencephalogram during hypoxia-ischemia in neonatal mice

Hypoxi iskæmi er den mest almindelige årsag til neonatale anfald. Dyremodeller er afgørende for at forstå de mekanismer og fysiologi, der ligger til grund for neonatale anfald og hypoxi iskæmi. Dette manuskript beskriver en metode til kontinuerlig videoelektroencefalogram (EEG) overvågning i neonatale mus for at opdage anfald og analysere EEG-baggrund under hypoxi iskæmi. Brug af video og EEG i forbindelse giver mulighed for beskrivelse af beslaglæggelse semiologi og bekræftelse af anfald. Denne metode giver også mulighed for analyse af effektspektrogrammer og EEG baggrundsmønster tendenser i løbet af den eksperimentelle periode. I denne hypoxi iskæmi model, metoden tillader EEG optagelse før skade for at opnå en normativ baseline og under skade og nyttiggørelse. Den samlede overvågningstid er begrænset af manglende evne til at adskille unger fra moderen i mere end fire timer. Selvom vi har brugt en model af hypoxisk-iskæmiske anfald i dette manuskript, kunne denne metode til neonatal video EEG-overvågning anvendes på forskellige sygdoms- og beslaglæggelsesmodeller hos gnavere.

Semiologi for krampeanfald
Neonatal hypoxi-iskæmieksponering resulterer i både generaliserede og fokale anfald hos mus (figur 1A-C). Video EEG optagelser tillader elektrigrafiske resultater, der skal korreleres til adfærd på video. Disse adfærd blev scoret ved hjælp af en tidligere offentliggjort neonatal gnaver adfærdsmæssige beslaglæggelse score (BSS)16. Ud over BSS kategoriserede vi hændelser baseret p...

Watch this Scientific Journal Video about Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice at JoVE.com

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice

Dette manuskript beskriver en metode til kontinuerlig video EEG optagelser ved hjælp af flere dybde elektroder i neonatale mus gennemgår hypoxi-iskæmi.

Kontinuerlig video elektroencefalogram under hypoxi-iskæmi i neonatale mus

Hypoxia ischemia is the most common cause of neonatal seizures. Animal models are crucial for understanding the mechanisms and physiology underlying ...

Research

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