Name: orthotopic rat kidney transplantation: a novel and simplified surgical approach
Uploaded: 2019-05-07T14:00:00
Description: Watch this Scientific Journal Video about Orthotopic Rat Kidney Transplantation: A Novel and Simplified Surgical Approach at JoVE.com

This work was funded by a generous gift from the Bombeck Family Estate.

Lewis (RT11) and Dark Agouti (DA) (RT1Aa) rats were purchased from commercial vendors (see the Table of Materials). These fully MHC-mismatched strains are often used to study acute renal allograft rejection. All animals were housed and maintained according to the National Institutes of Health&#8217;s (NIH) guidelines in a specific pathogen-free facility at the Johns Hopkins University. All procedures were approved by the institutional animal care and use committee.
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<ol>
	<li>Billingham, R. E., Brent, L., Medawar, P. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Actively+acquired+tolerance+of+foreign+cells.">Actively acquired tolerance of foreign cells.</a> Nature. 172 (4379), 603-606 (1953).</li><li>Murray, J. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Organ+transplantation+(skin,+kidney,+heart)+and+the+plastic+surgeon.">Organ transplantation (skin, kidney, heart) and the plastic surgeon.</a> Plastic and Reconstructive Surgery. 47 (5), 425-431 (1971).</li><li>Liu, F., Kang, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Heterotopic+heart+transplantation+in+mice.">Heterotopic heart transplantation in mice.</a> Journal of Visualized Experiments. (6), e238 (2007).</li><li>Ruzza, 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=Heterotopic+heart+transplantation+in+rats:+improved+anesthetic+and+surgical+technique.">Heterotopic heart transplantation in rats: improved anesthetic and surgical technique.</a> Transplant Proceedings. 42 (9), 3828-3832 (2010).</li><li>Oldani, G., Lacotte, S., Morel, P., Mentha, G., Toso, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Orthotopic+liver+transplantation+in+rats.">Orthotopic liver transplantation in rats.</a> Journal of Visualized Experiments. (65), e4143 (2012).</li><li>Lang, K. 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M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nephrotoxicity+of+immunosuppressive+drugs:+long-term+consequences+and+challenges+for+the+future.">Nephrotoxicity of immunosuppressive drugs: long-term consequences and challenges for the future.</a> American Journal of Kidney Diseases. 35 (2), 333-346 (2000).</li><li>Hu, X., 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=Chimeric+Allografts+Induced+by+Short-Term+Treatment+With+Stem+Cell-Mobilizing+Agents+Result+in+Long-Term+Kidney+Transplant+Survival+Without+Immunosuppression:+A+Study+in+Rats.">Chimeric Allografts Induced by Short-Term Treatment With Stem Cell-Mobilizing Agents Result in Long-Term Kidney Transplant Survival Without Immunosuppression: A Study in Rats.</a> American Journal of Transplantation. 16 (7), 2055-2065 (2016).</li><li>Shrestha, B., Haylor, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Experimental+rat+models+of+chronic+allograft+nephropathy:+a+review.">Experimental rat models of chronic allograft nephropathy: a review.</a> International Journal of Nephrology and Renovascular Disease. 7, 315-322 (2014).</li><li>Fu, Y., 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=Successful+transplantation+of+kidney+allografts+in+sensitized+rats+after+syngeneic+hematopoietic+stem+cell+transplantation+and+fludarabine.">Successful transplantation of kidney allografts in sensitized rats after syngeneic hematopoietic stem cell transplantation and fludarabine.</a> American Journal of Transplantation. 14 (10), 2375-2383 (2014).</li><li>Grau, 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=Immune+Complex-Type+Deposits+in+the+Fischer-344+to+Lewis+Rat+Model+of+Renal+Transplantation+and+a+Subset+of+Human+Transplant+Glomerulopathy.">Immune Complex-Type Deposits in the Fischer-344 to Lewis Rat Model of Renal Transplantation and a Subset of Human Transplant Glomerulopathy.</a> Transplantation. 100 (5), 1004-1014 (2016).</li><li>Vogelbacher, 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=Bortezomib+and+sirolimus+inhibit+the+chronic+active+antibody-mediated+rejection+in+experimental+renal+transplantation+in+the+rat.">Bortezomib and sirolimus inhibit the chronic active antibody-mediated rejection in experimental renal transplantation in the rat.</a> Nephrology Dialysis Transplantation. 25 (11), 3764-3773 (2010).</li><li>Fisher, B., Lee, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Microvascular+surgical+techniques+in+research,+with+special+reference+to+renal+transplantation+in+the+rat.">Microvascular surgical techniques in research, with special reference to renal transplantation in the rat.</a> Surgery. 58 (5), 904-914 (1965).</li><li>Mahabir, R. 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In this manuscript, we describe the surgical method for orthotopic KT in rats in detail, including all the necessary equipment needed to perform this procedure (Figure 5). In 1965, Fisher and Lee published the first report on KT in rats, which became the start of an exciting investigative field18. Since then, many modifications have been introduced to improve the reproducibility of this model. It has served as an effective animal model for studying ischemia-reperfusio...

Historically, the first transplant rejection studies were performed by Brent and Medawar using skin transplants in rodents1. It soon became clear that skin has distinct immunological features, making it a highly immunogenic organ that is different in rejection from other vascularized solid organs2. Rat studies of solid organ transplant rejection are habitually limited to heart, liver, and kidney transplants. Although each of these organs is suitable to study rejection, there are advantages and disadvantages to each of them. Heart transplants are often transplanted into the abdomen and anastomosed to the aorta and vena cava, with the recipient&#8217;s native heart in place3. This does not recreate human clinical, anatomical, and physiological conditions. Additionally, hearts are very sensitive to cold ischemia and have to be reperfused preferentially within 1 h in order to be able to recover their function4. Liver transplants are generally considered to be surgically more challenging and time-sensitive to perform. After removing the native liver, the donor liver has to be implanted and reperfused within 30 min as the recipients cannot last longer without a functioning liver5. The hepatic artery, portal vein, and especially the bile duct reconstruction requires refined surgical skills. Besides the surgical challenges, the liver is known to possess tolerogenic properties and rodents and humans can become operationally tolerant6,7,8. The kidney, unlike the aforementioned organs, can be transplanted in an orthotopic fashion, is known to be an immunogenic organ with consistent, reproducible rejection episodes (if not immunosuppressed), and allows for prolonged cold ischemia times of several hours. This makes the rat kidney transplant an ideal model for studying allograft rejection and tolerance.
Kidney transplantation (KT) is the preferred choice of treatment for patients with end-stage renal disease. Over the last few decades, short-term survival outcomes after KT have improved dramatically, but long-term survival outcomes are stagnant9. Conventional immunosuppressive regimens remain the standard anti-rejection therapy. However, the chronic use of immunosuppressive therapies causes significant morbidity and mortality, such as nephrotoxicity, diabetes, and secondary malignancies10,11,12. In the long-term, chronic antibody- and cellular-mediated rejection threaten graft survival, with limited therapeutic options available.
A major goal in transplantation is the induction of transplant tolerance in order to obviate the need for chronic immunosuppression. The rat KT model is a robust tool to investigate the immunological rejection process and to evaluate new approaches to immunomodulation and transplant tolerance. The rat also serves as a suitable model to study acute and chronic cell- and antibody-mediated rejection13,14,15,16,17. This surgical model has proven to be a reliable, reproducible, and cost-effective tool to study various aspects of allograft rejection and tolerance. It is often used to test novel tolerance-inducing protocols prior to undertaking expensive and cumbersome large-animal studies. Performing KT in rats requires extensive surgical training and expertise to reach survival rates of &#62;90%. In this manuscript and in the accompanying instructional video, we provide a step-by-step outline for orthotopic KT in the rat, as successfully performed for many years at our institution.
Prior to starting any procedure, donor and recipient selection is critical and depends on the nature of the experiment. Ideally, donors and recipients should weigh between 220&#8211;260 g and be between 8&#8211;12 weeks of age. Animals under 220 g have small-diameter arteries, veins, and ureters, making the anastomosis in the recipient particularly challenging. Minor blood loss can cause hypovolemia and lead to death in smaller animals. Animals heavier than 260 g display more fat around their vessels, and vessel isolation will require more operative time and increase the cold ischemia time.

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	<tbody>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Buprenorphine HCL</td>
			<td style="width:167px;">Reckitt Benckiser Healthcare UK</td>
			<td style="width:167px;">NDC12496-0757-5</td>
			<td style="width:463px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Dissecting forceps, curved</td>
			<td style="width:167px;">Zhenbang, China</td>
			<td style="width:167px;"></td>
			<td style="width:463px;">11cm Flat handle&#160;</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Heparin sodium injection USP</td>
			<td style="width:167px;">Sagent Pharmaceuticals&#160;</td>
			<td style="width:167px;">NDC25021-400-10</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Micro-forceps, straight, smooth</td>
			<td style="width:167px;">Jingzhong, China</td>
			<td style="width:167px;">WA3010</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Micro needle holder</td>
			<td style="width:167px;">Jingzhong, China</td>
			<td style="width:167px;">WA2010</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Micro vessel clamps</td>
			<td style="width:167px;">Jingzhong, China</td>
			<td style="width:167px;">WA40120</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Micro spring sciccor 1</td>
			<td style="width:167px;">ROBOZ</td>
			<td style="width:167px;">RS-5620</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Micro spring sciccor 2</td>
			<td style="width:167px;">F.S.T.</td>
			<td style="width:167px;">91501-09</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Micro spring sciccor 3</td>
			<td style="width:167px;">Zhenbang, China</td>
			<td style="width:167px;"></td>
			<td style="width:463px;">8.5cm Vannas,curved</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Prograf (Tacrolimus/FK506)</td>
			<td style="width:167px;">Astellas</td>
			<td style="width:167px;"></td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Rats</td>
			<td style="width:167px;">Charles River &#38; Taconic Biosciences&#160;</td>
			<td style="width:167px;">LEW/Crl &#38; DA-M&#160;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Shaver</td>
			<td style="width:167px;">Wahl</td>
			<td>79600-2101</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Suture 4-0</td>
			<td style="width:167px;">Ethicon</td>
			<td style="width:167px;">J304H</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Suture, 4-0&#160;</td>
			<td style="width:167px;">Ethicon</td>
			<td style="width:167px;">683G</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Suture, 10-0&#160;</td>
			<td style="width:167px;">Ethicon</td>
			<td style="width:167px;">2820G</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Syringes &#38; Needles</td>
			<td style="width:167px;">BD</td>
			<td style="width:167px;"></td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Thread, 8-0</td>
			<td style="width:167px;">Ashaway</td>
			<td style="width:167px;">75290</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Ureteral cuff</td>
			<td style="width:167px;">Microlumen</td>
			<td style="width:167px;">160-1</td>
			<td>Polymide Tubing, Diameter 0.41 mm&#160;</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Venous cuff</td>
			<td style="width:167px;">Intramedic BD</td>
			<td style="width:167px;">7441</td>
			<td>PE-200 Non-radiopaque polyethylene tubing ID: 1.4 mm, OD: 1.9 mm</td>
		</tr>
	</tbody>
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orthotopic rat kidney transplantation: a novel and simplified surgical approach

Kidney transplantation offers increased survival rates and improved quality of life for patients with end-stage renal disease, as compared to any type of renal replacement therapy. Over the past few decades, the rat kidney transplantation model has been used to study the immunological phenomena of rejection and tolerance. This model has become an indispensable tool to test new immunomodulatory pharmaceuticals and regimens prior to proceeding with expensive preclinical large animal studies.
This protocol provides a detailed overview of how to reliably perform orthotopic kidney transplantation in rats. This protocol includes three distinctive steps that increase the probability of success: perfusion of the donor kidney by flushing through the portal vein and the use of a cuff system to anastomose the renal veins and ureters, thereby decreasing cold and warm ischemia times. Using this technique, we have achieved survival rates beyond 6 months with normal serum creatinine in animals with syngeneic or tolerant kidney transplants. Depending on the aim of the study, this model can be modified by pre- or posttransplant treatments to study the acute, chronic, cellular, or antibody-mediated rejection. It is a reproducible, reliable, and cost-effective animal model to study different aspects of kidney transplantation.

We performed syngeneic (N = 5) and allogeneic kidney transplants (N = 5). Animals with a syngeneic transplant achieved long-term survival without any immunosuppressive treatment. Animals that received an allogeneic transplant without immunosuppression rejected their graft and succumbed to renal failure with a median survival of 8 days (Figure 4A). Mean serum creatinine increased modestly in the syngeneic group while it increased by 14-fold in the allogeneic...

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Orthotopic Rat Kidney Transplantation: A Novel and Simplified Surgical Approach

The purpose of this manuscript and protocol is to explain and demonstrate in detail the surgical procedure of orthotopic kidney transplantation in rats. This method is simplified to achieve the correct perfusion of the donor kidney and shorten the reperfusion time by using the venous and ureteral cuff anastomosis technique.

Kidney transplantation offers increased survival rates and improved quality of life for patients with end-stage renal disease, as compared to any type of ...

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Medicine

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