Name: creation of murine experimental abdominal aortic aneurysms with elastase
Uploaded: 2009-07-23T18:00:00
Description: Watch this Scientific Journal Video about Creation of Murine Experimental Abdominal Aortic Aneurysms with Elastase at JoVE.com

<p class="jove_content">This work was supported the SCCOR grant &ldquo;AAA Disease:  Mechanisms, Stratification, and Treatment&rdquo; (P50 HL083800-03) from the National Institutes of Health</p>

<ol>
<li>Mice are anesthetized with inhaled isoflurane 2.0-3.0ml/L.</li>
<li>The abdomen is shaved and scrubbed with alcohol and betadine.</li>
<li>The mouse is placed supine on the operative field.</li>
<li>Sterile gloves are worn by the surgeon, and the instruments used have been sterilized with hot bead sterilizer.</li>
<li>A long midline abdominal incision is made. Abdominal contents are retracted outside the abdomen with sterile gauze to expose the abdominal aorta.</li>
<li>The abdominal aorta is isolated from the level of the left renal v...

<ol>
	<li>Anidjar, S., Salzmann, J. L., Gentric, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Elastase-induced+experimental+aneurysms+in+rats.">Elastase-induced experimental aneurysms in rats.</a> <em style='font-style: italic'>Circulation</em>. <b>82</b> (3), 973-973 (1990).</li><li>Pyo, R., Lee, J. K., Shipley, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Targeted+gene+disruption+of+matrix+metalloproteinase-9+(gelatinase+B)+suppresses+development+of+experimental+abdominal+aortic+aneurysms.">Targeted gene disruption of matrix metalloproteinase-9 (gelatinase B) suppresses development of experimental abdominal aortic aneurysms.</a> <em style='font-style: italic'>J Clin Invest</em>. <b>105</b> (11), 1641-1641 (2000).</li><li>Carsten, C. G., Calton, W. C., Johanning, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Elastase+is+not+sufficient+to+induce+experimental+abdominal+aortic+aneurysms.">Elastase is not sufficient to induce experimental abdominal aortic aneurysms.</a> <em style='font-style: italic'>J Vasc Surg</em>. <b>33</b> (6), 1255-1255 (2001).</li></ol>

<p class="jove_content">Previous studies have noted significant lot-to-lot variation in AAA development from different commercial elastase preparations<sup>3</sup>. Thus, it is critical to monitor production lots as well as to have appropriate control groups in order to document the ability of the preparation to induce AAAs.</p>
<p class="jove_content">Interestingly, susceptibility to AAA development in this model is dependent on the mouse strain used<sup>3</sup>. The mouse used in the current video is of the C57Bl/6 strain which has consisten...

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">	
		
		<div>
		<table border="1">
		<thead>
		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>Type I porcine pancreatic elastase</td>
<td>Reagent</td>
<td>Sigma</td>
<td>E1250</td>
<td>&nbsp;</td>
<tr>
<td>polyethylene tubing (PE-10)</td>
<td>&nbsp;</td>
<td>CLAY ADAMS</td>
<td>427400</td>
<td>&nbsp;</td>
<tr>
<td>CHANGE-A-TIP</td>
<td>&nbsp;</td>
<td>Bovie</td>
<td>18010-00 (FST)</td>
<td>cautery knife</td>
</tr>
<tr>
<td>LEICA MZ6</td>
<td>&nbsp;</td>
<td>Leica</td>
<td>&nbsp;</td>
<td>stereomicroscope</td>
</tr>
<tr>
<td>LEICA DFC290HD</td>
<td>&nbsp;</td>
<td>Leica</td>
<td>&nbsp;</td>
<td>USB camera</td>
</tr>
<tr>
<td>Image Pro Express ver. 6.0</td>
<td>&nbsp;</td>
<td>Media Cybernetics</td>
<td>&nbsp;</td>
<td>software</td>
</tr>		</tbody>
		</table>
		</div>
	

creation of murine experimental abdominal aortic aneurysms with elastase 

<p class="jove_content">Transient intraluminal infusion of porcine pancreatic elastase into the infrarenal segment of the abdominal aorta is the most widely used animal model of abdominal aortic aneurysm (AAA) ever since it was first described in rats by Anidjar and colleagues.<sup>1</sup> The rationale for its development was based on the disrupted nature of elastin observed in AAAs. This rat model has been modified to produce AAAs in the infrarenal aortic region of mice.<sup>2</sup> The model has the ability to add broad insight into the pathobiology of AAA due to the emergence of numerous transgenic and gene knockout mice.   Moreover, it is a viable platform to test potential therapeutic agents for AAA. In this video, we demonstrate the elastase infusion AAA procedure used in our laboratory.</p> 
<p class="jove_content">Mice are anesthetized using 2.5% isoflurane, and a laparotomy is performed under sterile conditions. The abdominal aortais isolated with the assistance of an operating stereomicroscope (Leica). After placing temporary ligatures around the proximal and distal aorta, an aortotomy is created at the bifurcation with the tip of a 30-gauge needle. A heat-tapered segment of PE-10 polyethylene tubing is introduced through the aortotomy and secured.  The aortic lumen is subsequently perfused for 5-15 minutes at 100 mm Hg with saline containing type I porcine pancreatic elastase (4.5 U/mL; Sigma Chemical Co.). After removing the perfusion catheter, the aortotomy is repaired without constriction of the lumen.</p>

Watch this Scientific Journal Video about Creation of Murine Experimental Abdominal Aortic Aneurysms with Elastase at JoVE.com

Creation of Murine Experimental Abdominal Aortic Aneurysms with Elastase

<p class="jove_content">This video shows how to induce abdominal aortic aneurysms (AAA) in mice via transient intraluminal infusion of porcine pancreatic elastase into the infrarenal segment of the abdominal aorta. The model has the ability to add broad insight into the pathobiology of AAA due to the emergence of numerous transgenic and gene knockout mice.</p>

Creation of Murine Experimental Abdominal Aortic Aneurysms with Elastase 

Transient intraluminal infusion of porcine pancreatic elastase into the infrarenal segment of the abdominal aorta is the most widely used animal model of ...

Research

JoVE Journal

Biology

Aortic Ring Assay

Angiogenesis, the sprouting of blood vessels from preexisting vasculature is associated with both natural and pathological processes. Various angiogenesis ...

Transverse Aortic Constriction in Mice

Transverse aortic constriction (TAC) in the mouse is a commonly used experimental model for pressure overload-induced cardiac hypertrophy and heart ...

Isolation and Kv Channel Recordings in Murine Atrial and Ventricular Cardiomyocytes

KCNE genes encode for a small family of Kv channel ancillary subunits that form heteromeric complexes with Kv channel alpha subunits to modify their ...

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading TED

Visualization of calcium dynamics is important to understand the role of calcium in cell physiology. To examine calcium dynamics, synthetic fluorescent ...

Isolation and Primary Culture of Mouse Aortic Endothelial Cells

The vascular endothelium is essential to normal vascular homeostasis. Its dysfunction participates in various cardiovascular disorders. The mouse is an ...

An Alternative Approach for Sample Preparation with Low Cell Number for TEM Analysis

Transmission electron microscopy (TEM) provides details of the cellular organization and ultrastructure. However, TEM analysis of rare cell populations, ...

Murine Aortic Crush Injury: An Efficient <em>In Vivo</em> Model of Smooth Muscle Cell Proliferation and Endothelial Function

Murine Aortic Crush Injury: An Efficient In Vivo Model of Smooth Muscle Cell Proliferation and Endothelial Function

Arterial reconstruction, whether angioplasty or bypass surgery, involves iatrogenic trauma causing endothelial disruption and vascular smooth muscle cell ...

Isolation and Culture of Primary Aortic Endothelial Cells from Miniature Pigs

Xenotransplantation is a promising way to resolve the shortage of human organs for patients with end-stage organ failure, and the pig is considered as a ...

A Murine Model of a Burn Wound Reconstructed with an Allogeneic Skin Graft

Trivial superficial wounds heal without complications by primary intention. Deep wounds, such as full thickness burns, heal by secondary intention and ...