Name: a laser-induced mouse model of chronic ocular hypertension to characterize visual defects
Uploaded: 2013-08-14T14:00:00
Description: Watch this Scientific Journal Video about A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects at JoVE.com

Il lavoro contenuto in questo documento è stata sostenuta dal Dr. Douglas H. Johnson Award per il Glaucoma Research dalla American Health Assistance Foundation (XL), la William &amp; Mary Greve Scholar Award speciale della ricerca per prevenire la cecità (XL), il Illinois Società per la Prevenzione della Cecità (HC) e NIH concedere R01EY019034 (XL).

Procedure C57BL/6J topi (Jackson Laboratory, Bar Harbor, ME) sono allevati presso la Northwestern University Animal Care strumento. Tutti gli animali sono utilizzati secondo protocolli approvati dalla Northwestern University Institutional Animal Care e del Comitato uso e conforme alle linee guida sull&#39;uso degli animali in Neuroscience Research dal NIH. 1. Fotocoagulazione laser La procedura di fotocoagulazione laser viene modificata da...

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Segnaliamo soprattutto che l&#39;ipertensione oculare sostenuta può essere indotta da illuminazione laser negli occhi del mouse. Rispetto al modello iniezione salina 18 e il modello cauterizzazione vena 11 entrambi richiedono estese competenze microchirurgia, l&#39;illuminazione laser è relativamente semplice e facile da eseguire. Di solito siamo in grado di eseguire l&#39;illuminazione laser per 4-6 topi in 2-3 ore. I passi fondamentali per raggiungere sostenuta IOP elevazione sono la camera ant...

<table border="1">
 <tbody>
 <tr>
 <td></td>
 <td></td>
 <td></td>
 <td>Reagent</td>
 </tr>
 <tr>
 <td>moxifloxacin</td>
 <td>Alcon Labs, Inc.</td>
 <td>NDC 0065-4013-03</td>
 <td>0.5 %, Rx only</td>
 </tr>
 <tr>
 <td>Proparacaine Hydrochloride</td>
 <td>Bausch &amp; Lomb</td>
 <td>NDC 24208-730-06</td>
 <td>0.5 %, Rx only</td>
 </tr>
 <tr>
 <td>Ophthalmic Solution USP</td>
 <td>Bausch &amp; Lomb</td>
 <td>NDC 24208-730-06</td>
 <td>.5 %, Rx only</td>
 </tr>
 <tr>
 <td>ketamine</td>
 <td>Butler Schein Animal Health</td>
 <td>NDC 11695-0550-1</td>
 <td>100 mg / kg </td>
 </tr>
 <tr>
 <td>xylazine</td>
 <td>LLOYD Inc. of Iowa</td>
 <td>NADA 139-236</td>
 <td>10 mg / kg </td>
 </tr>
 <tr>
 <td>atropine sulfate solution</td>
 <td>Alcon Labs, Inc.</td>
 <td>NDC 61314-303-02</td>
 <td>1 %, Rx only</td>
 </tr>
 <tr>
 <td></td>
 <td></td>
 <td></td>
 <td>Equipment </td>
 </tr>
 <tr>
 <td>Slit Lamp, TOPCON </td>
 <td>Visual Systems Inc</td>
 <td>SL-3E</td>
 <td>powered by PS-30A</td>
 </tr>
 <tr>
 <td>OptoMotry 1.8.0 virtual</td>
 <td>CerebralMechanics Inc.</td>
 <td></td>
 <td></td>
 </tr>
 <tr>
 <td>opto-kinetic testing system</td>
 <td>CerebralMechanics Inc.</td>
 <td></td>
 <td></td>
 </tr>
 <tr>
 <td>Tonometer, TonoLab, for mice</td>
 <td>Colonial Medical Supply</td>
 <td></td>
 <td></td>
 </tr>
 <tr>
 <td>Heating pad</td>
 <td>Sunbeam Products Inc</td>
 <td>722-810</td>
 <td></td>
 </tr>
 <tr>
 <td>Argon laser </td>
 <td>Coherent Inc</td>
 <td>Ultima 2000SE</td>
 <td></td>
 </tr>
 <tr>
 <td>DECAPICONE Plastic cone holder </td>
 <td>Braintree Sci Inc.</td>
 <td>MDC-200</td>
 <td>for mouse</td>
 </tr>
 </tbody>
 </table>

a laser-induced mouse model of chronic ocular hypertension to characterize visual defects

Glaucoma, frequentemente associata a elevata pressione intraoculare (IOP), è una delle principali cause di cecità. Abbiamo cercato di stabilire un modello murino di ipertensione oculare per imitare ad alta tensione umana glaucoma. Qui illuminazione laser è applicato al limbus corneale per fotocoagulare il deflusso acquosa, inducendo chiusura dell&#39;angolo. Le variazioni di IOP sono controllati mediante un tonometro rimbalzo prima e dopo il trattamento laser. Un test comportamentale optomotor viene utilizzato per misurare corrispondenti variazioni della capacità visiva. Il risultato rappresentante di un topo che si è sviluppato subito dopo IOP elevazione illuminazione laser è indicato. Un acuità visiva diminuita e la sensibilità al contrasto sono osservati in questo oculare ipertensiva mouse. Insieme, il nostro studio introduce un sistema modello prezioso per studiare la degenerazione neuronale e dei meccanismi molecolari sottostanti nei topi glaucomatosi.

Come descritto nelle Procedure, illuminazione laser è finalizzata alla trabecolato nella regione limbare fotocoagulare per il deflusso acquosa, inducendo chiusura di angolo (Figura 1). Occhi più esposte al laser senza significativi danni fisici, distacco pigmento o infezione, in linea con i risultati precedenti 6. Quando un piccolo gruppo di topi (meno del 5% di tutti gli animali al laser) espone i segni fisici di gravi danni, come palle sgonfie occhio, grave cataratta, distacco significati...

Watch this Scientific Journal Video about A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects at JoVE.com

A Laser-induced Mouse Model of Chronic Ocular Hypertension to Characterize Visual Defects

Ipertensione oculare cronica è indotta mediante fotocoagulazione laser del trabecolato negli occhi del mouse. La pressione intraoculare (IOP) è elevato per diversi mesi dopo il trattamento laser. La diminuzione di acuità visiva e la sensibilità al contrasto di animali da esperimento sono monitorati utilizzando il test optomotor.

Un modello di topo indotta da laser di cronica ipertensione oculare per caratterizzare difetti visivi

Glaucoma, frequently associated with elevated intraocular pressure (IOP), is one of the leading causes of blindness. We sought to establish a mouse model ...

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The wire myograph technique is used to assess the contractility of vascular smooth muscles in response to depolarization, GPCR agonists/inhibitors and ...

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Elevated intraocular pressure (IOP) is a well-documented risk factor for glaucoma. Here we describe a novel, effective method for consistently inducing ...