Name: use of rotorod as a method for the qualitative analysis of walking in rat
Uploaded: 2008-12-10T00:00:00
Description: Watch this Scientific Journal Video about Use of Rotorod as a Method for the Qualitative Analysis of Walking in Rat at JoVE.com

Ondersteund door subsidies van de Canadese Institutes of Health Research, de Canadese Stroke-netwerk, en de Alberta Heritage Foundation for Medical Research.

Rotorod lopen apparatuur De rotorod was een roterende cilinder, 4 cm in diameter, vaste 35 cm boven de grond en ingesloten door transparant plexiglas. De rotorod cilinder was bedekt met getextureerd rubber coating, die de tractie vergemakkelijkt. De vloer van het apparaat was bedekt met een laag schuim om blessures te voorkomen wanneer dieren viel. Een kleine elektromotor die stroom naar de rotorod draaien via een rubberen band. De rotorod was ingesteld om een ​​keer te draaien om de 5 s. <...

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Het doel van deze studie was om te onderzoeken of de rotorod test voor knaagdieren voortbeweging vaardigheid kan worden gebruikt voor het kwalitatieve onderzoek van de houding, voorpoot stepping en achterste ledematen intensivering in het zenuwstelsel gewond ratten. Voor de analyse, ratten met een unilaterale DA depleties en controle ratten werden opgenomen video vanaf de voorzijde, laterale en achterste uitzicht. A rating schaal van houding en bewegingen voorpoot aangegeven dat het intensiveren van bewegingen chronisch werden na de operati...

A correction was made to: <a href="http://www.jove.com/video/1030/">Use of Rotorod as a Method for the Qualitative Analysis of Walking in Rat</a>. An additional paragraph was added to the discussion, the abstract was modified, and another reference was included.
Additional reference:
15. Whishaw IQ, Li K, Whishaw PA, Gorny B, Metz GA. Distinct forelimb and hind limb stepping impairments in unilateral dopamine-depleted rats: use of the rotorod as a method for the qualitative analysis of skilled walking. J Neurosci Meth 126, 13-23 (2003).
Revised Abstract:
High speed videoanalysis of the details of movement can provide a source of information about qualitative aspects of walking movements. When walking on a rotorod, animals remain in approximately the same place making repetitive movements of stepping. Thus the task provides a rich source of information on the details of foot stepping movements. Subjects were hemi-Parkinson analogue rats, produced by injection of 6-hydroxydopamine (6-OHDA) into the right nigrostriatal bundle to deplete nigrostriatal dopamine (DA). The present report provides a video analysis illustration of animals previously were filmed from frontal, lateral, and posterior views as they walked (15). Rating scales and frame-by-frame replay of the video records of stepping behavior indicated that the hemi-Parkinson rats were chronically impaired in posture and limb use contralateral to the DA-depletion. The contralateral limbs participated less in initiating and sustaining propulsion than the ipsilateral limbs. These deficits secondary to unilateral DA-depletion show that the rotorod provides a use task for the analysis of stepping movements.
Additional Discussion Paragraph:
A more detailed presentation of the present study has been made (Whishaw et al, 2003), but the present study presents the video support describing the stepping movement in the good and affected limbs of unilateral dopamine-depleted rats. For the analysis, rats with unilateral DA depletions and control rats were video recorded from front, lateral and posterior views. A rating scale of posture and forelimb movements indicated that stepping movements were chronically impaired following surgery. Examination of limb movements indicated that whereas the DA-depleted rats could use the limbs contralateral to the lesion for support, they received minimal use for shifting weight. The results of this study indicate that the rotorod task, in addition to providing quantitative measures of motor impairments, can also provide insights into the qualitative impairments.
Original Abstract:
The rotorod test, in which animals walk on a rotating drum, is widely used to assess motor status in laboratory rodents. Performance is measured by the duration that an animal stays up on the drum as a function of drum speed. Here we report that the task provides a rich source of information about qualitative aspects of walking movements. Because movements are performed in a fixed location, they can readily be examined using high-speed video recording methods. The present study was undertaken to examine the potential of the rotorod to reveal qualitative changes in the walking movements of hemi-Parkinson analogue rats, produced by injection of 6-hydroxydopamine (6-OHDA) into the right nigrostriatal bundle to deplete nigrostriatal dopamine (DA). Beginning on the day following surgery and then periodically over the next two months, the rats were filmed from frontal, lateral, and posterior views as they walked on the rotorod. Behavior was analyzed by frame-by-frame replay of the video records. Rating scales of stepping behavior indicated that the hemi-Parkinson rats were chronically impaired in their posture and in the use of the limbs contralateral to the DA-depletion. The contralateral limbs not only displayed postural and movement abnormalities, they participated less in initiating and sustaining propulsion than did the ipsilateral limbs. These findings not only reveal new deficits secondary to unilateral DA-depletion, but also show that the rotorod can provide a robust tool for the qualitative analysis of movement.

A correction was made to: <a href="http://www.jove.com/video/1030/">Use of Rotorod as a Method for the Qualitative Analysis of Walking in Rat</a>. An additional paragraph was added to the discussion, the abstract was modified and another reference was included.

Erratum: Use of Rotorod as a Method for the Qualitative Analysis of Walking in Rat

use of rotorod as a method for the qualitative analysis of walking in rat

De rotorod test, waarin dieren lopen op een roterende trommel, wordt op grote schaal gebruikt om de motor status te beoordelen in het laboratorium knaagdieren. Prestaties worden gemeten met de duur van een dier blijft op de trommel als een functie van de trommel snelheid. Hier hebben we melden dat de opdracht een rijke bron van informatie over de kwalitatieve aspecten van het lopen bewegingen zorgt. Omdat de bewegingen worden uitgevoerd in een vaste locatie, kunnen ze gemakkelijk worden onderzocht met behulp van high-speed video-opname methoden. De huidige studie werd uitgevoerd om het potentieel van de rotorod om kwalitatieve veranderingen zien in de wandel-bewegingen van hemi-Parkinson ratten analoog, geproduceerd door middel van injectie van 6-hydroxydopamine (6-OHDA) in de rechter nigrostriatale bundel naar nigrostriatale dopamine afbrekende stoffen (te onderzoeken DA ). Vanaf de dag na de operatie en vervolgens periodiek gedurende de komende twee maanden, de ratten werden gefilmd vanuit frontaal, lateraal, en posterieure beschouwt als ze liepen op de rotorod. Gedrag werd geanalyseerd door frame-by-frame herhaling van de video-opnamen. Schalen te stappen gedrag aangegeven dat het hemi-Parkinson ratten chronisch waren aangetast in hun houding en in het gebruik van de ledematen contralateraal van de DA-uitputting. De contralaterale ledematen niet alleen weergegeven houdings-en beweging afwijkingen, namen ze deel minder in het initiëren en onderhouden van voortstuwing dan heeft de ipsilaterale ledematen. Deze bevindingen niet alleen onthullen nieuwe tekorten secundair aan eenzijdige DA-uitputting, maar laten ook zien dat de rotorod kan een krachtig instrument voor de kwalitatieve analyse van de beweging te geven.

Watch this Scientific Journal Video about Use of Rotorod as a Method for the Qualitative Analysis of Walking in Rat at JoVE.com

Use of Rotorod as a Method for the Qualitative Analysis of Walking in Rat

De rotorod test wordt gebruikt om motor-status te beoordelen in de loopbeweging van hemi-Parkinson ratten analoog.

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