Name: roux-en-y gastric bypass operation in rats
Uploaded: 2012-06-11T13:00:00
Description: Watch this Scientific Journal Video about Roux-en-Y Gastric Bypass Operation in Rats at JoVE.com

Marco Bueter e Florian Seyfried foram apoiados pelo Deutsche Forschungsgemeinschaft (DFG). A Thomas Lutz foi apoiado pela Fundação de Pesquisa Nacional Suíço (SNF). Marco Bueter e Thomas A. Lutz ainda receber financiamento do National Institute of Health (NIH) e do Centro de Zurique de Fisiologia Humana Integrativa (ZIHP) Carel le Roux W foi apoiada por um Department of Health prêmio cientista médico. Imperial College de Londres recebe o apoio da Investigação Biomédica NIHR regime de financiamento Centro.

1. Cuidados Pré-Operatórios <ol><li> Remover comida de rato durante a noite antes da cirurgia. </li><li> Indução da anestesia em câmara com fluxo de 4-5% isoflurano e O2 de 2 l / min. </li><li> Shave abdome do esterno às pélvis usando barbeador elétrico. </li><li> Coloque rato anestesiado em decúbito dorsal sobre a almofada de aquecimento isotérmico. </li><li> Aplicar pomada (Vitagel) antes de colocar focinho dos ratos em nosecone. </li><li> Manter a anestesia com isoflurano concentração de 2-3% e fluxo de...

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Surg. 243, 108-114 (2006).</li><li>Bueter, M., Lowenstein, C., Olbers, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gastric+bypass+increases+energy+expenditure+in+rats.">Gastric bypass increases energy expenditure in rats.</a> Gastroenterology. 138, 1845-1853 (2010).</li><li>Stylopoulos, N., Hoppin, A. G., Kaplan, L. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Roux-en-Y+Gastric+Bypass+Enhances+Energy+Expenditure+and+Extends+Lifespan+in+Diet-induced+Obese+Rats.">Roux-en-Y Gastric Bypass Enhances Energy Expenditure and Extends Lifespan in Diet-induced Obese Rats.</a> Obesity (Silver Spring). 17, 1839-1847 (2009).</li><li>Bueter, M., Miras, A. D., Chichger, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Alterations+of+sucrose+preference+after+Roux-en-Y+gastric+bypass.">Alterations of sucrose preference after Roux-en-Y gastric bypass.</a> Physiol. Behav. 104, 709-721 (2011).</li><li>le Roux, C. W., Bueter, M., Theis, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gastric+bypass+reduces+fat+intake+and+preference.">Gastric bypass reduces fat intake and preference.</a> Am. J. Physiol. Regul. Integr. Comp. Physiol. 301, 1057-1066 (2011).</li><li>Bueter, M., Ashrafian, H., Frankel, A. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Sodium+and+water+handling+after+gastric+bypass+surgery+in+a+rat+model.">Sodium and water handling after gastric bypass surgery in a rat model.</a> Surg. Obes. Relat. Dis. 7, 68-73 (2011).</li><li>Li, J. V., Ashrafian, H., Bueter, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Metabolic+surgery+profoundly+influences+gut+microbial-host+metabolic+cross-talk.">Metabolic surgery profoundly influences gut microbial-host metabolic cross-talk.</a> Gut. 60, 1214-1223 (2011).</li><li>Ashrafian, H., le Roux, C. 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Endosc. 21, 1397-1402 (2007).</li><li>Hajnal, A., Kovacs, P., Ahmed, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gastric+bypass+surgery+alters+behavioral+and+neural+taste+functions+for+sweet+taste+in+obese+rats.">Gastric bypass surgery alters behavioral and neural taste functions for sweet taste in obese rats.</a> Am. J. Physiol. Gastrointest. Liver Physiol. 299, G967-G979 (2010).</li><li>Shin, A. C., Zheng, H., Pistell, P. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Roux-en-Y+gastric+bypass+surgery+changes+food+reward+in+rats.">Roux-en-Y gastric bypass surgery changes food reward in rats.</a> Int. J. Obes. (Lond). 35, 642-651 (2011).</li><li>Tichansky, D. S., Rebecca, G. A., Madan, A. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Decrease+in+sweet+taste+in+rats+after+gastric+bypass+surgery.">Decrease in sweet taste in rats after gastric bypass surgery.</a> Surg. Endosc. 25, 1176-1181 (2011).</li><li>Olbers, T., Lonroth, H., Fagevik-Olsen, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Laparoscopic+gastric+bypass:+development+of+technique,+respiratory+function,+and+long-term+outcome.">Laparoscopic gastric bypass: development of technique, respiratory function, and long-term outcome.</a> Obes. Surg. 13, 364-370 (2003).</li><li>Madan, A. K., Harper, J. L., Tichansky, D. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Techniques+of+laparoscopic+gastric+bypass:+on-line+survey+of+American+Society+for+Bariatric+Surgery+practicing+surgeons.">Techniques of laparoscopic gastric bypass: on-line survey of American Society for Bariatric Surgery practicing surgeons.</a> Surg. Obes. Relat. Dis. 4, 166-172 (2008).</li><li>Bueter, M., Lowenstein, C., Ashrafian, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Vagal+sparing+surgical+technique+but+not+stoma+size+affects+body+weight+loss+in+rodent+model+of+gastric+bypass.">Vagal sparing surgical technique but not stoma size affects body weight loss in rodent model of gastric bypass.</a> Obes. Surg. 20, 616-622 (2010).</li><li>Korner, J., Bessler, M., Cirilo, L. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+Roux-en-Y+gastric+bypass+surgery+on+fasting+and+postprandial+concentrations+of+plasma+ghrelin,+peptide+YY,+and+insulin.">Effects of Roux-en-Y gastric bypass surgery on fasting and postprandial concentrations of plasma ghrelin, peptide YY, and insulin.</a> J. Clin. Endocrinol. Metab. 90, 359-365 (2005).</li><li>Schwartz, M. W., Woods, S. C., Porte, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Central+nervous+system+control+of+food+intake.">Central nervous system control of food intake.</a> Nature. 404, 661-671 (2000).</li><li>Abbott, C. R., Monteiro, M., Small, C. 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W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Metabolic+surgery+and+gut+hormones+-+a+review+of+bariatric+entero-humoral+modulation.">Metabolic surgery and gut hormones - a review of bariatric entero-humoral modulation.</a> Physiol. Behav. 97, 620-631 (2009).</li><li>Choban, P. S., Flancbaum, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+effect+of+Roux+limb+lengths+on+outcome+after+Roux-en-Y+gastric+bypass:+a+prospective,+randomized+clinical+trial.+Obes.">The effect of Roux limb lengths on outcome after Roux-en-Y gastric bypass: a prospective, randomized clinical trial. Obes.</a> Surg. 12, 540-545 (2002).</li><li>Gleysteen, J. 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O procedimento de Roux-en-Y bypass gástrico em humanos foi primeiramente descrita por Mason em 1967 e modificada em sua forma atual por Torres em 1983 19. Actualmente, o processo consiste em uma pequena bolsa gástrica e da derivação do intestino delgado proximal. Uma ilustração esquemática da anatomia pré e pós-operatório é dado na Figura 1. Bypass gástrico em humanos induz e mantém a perda de peso de cerca de 15-30% 2. A maioria do peso co...

<table border="1"><tbody><tr><td> Nome genérico </td><td> Marca </td><td> Companhia </td><td> Número de catálogo </td></tr><tr><td> Enrofloxacina </td><td> Baytril 2,5% </td><td> Provet AG </td><td> 1036 </td></tr><tr><td> Flunixin </td><td> Finadyne </td><td> Graeub </td><td> 908040 </td></tr><tr><td> Buprenorphin </td><td> Temgesic </td><td> Reckitt Benckiser </td><td> 138976 </td></tr><tr><td> Isoflurano </td><td> IsoFlo </td><td> Graeub </td><td> 902035 </td></tr><tr><td> A vitamina A </td><td> Vitagel </td><td> Bausch &amp; Lomb </td><td> 690 </td></tr><tr><td> Solução de iodo </td><td> Betadine </td><td> Mundipharma </td><td> 111141 </td></tr><tr><td> NaCl 0,9% </td><td> NaCl 0,9% </td><td> B. Braun </td><td> 534534 </td></tr></tbody></table> Tabela 1. Drogas. <table border="1"><tbody><tr><td> Nome </td><td> Tamanho </td><td> Companhia </td><td> Número de catálogo </td></tr><tr><td> PDS II </td><td> 4-0 </td><td> Ethicon </td><td> Z924H </td></tr><tr><td> PDS II </td><td> 5-0 </td><td> Ethicon </td><td> Z925H </td></tr><tr><td> PDS II </td><td> 6-0 </td><td> Ethicon </td><td> PUU2971E </td></tr><tr><td> PDS II </td><td> 7-0 </td><td> Ethicon </td><td> Z1370E </td></tr><tr><td> Vicryl </td><td> 4-0 </td><td> Ethicon </td><td> V451H </td></tr></tbody></table> Tabela 2. Suturas. <table border="1"><tbody><tr><td> Nome </td><td> Companhia </td><td> Número de catálogo </td></tr><tr><td> Bisturi alça No. 3 </td><td> Aesculap </td><td> BB073R </td></tr><tr><td> Lâminas de bisturi Sem. 10 </td><td> Swann-Morton </td><td> 0301 </td></tr><tr><td> Suporte de agulha </td><td> Aesculap </td><td> BM124R </td></tr><tr><td> Pinça </td><td> Aesculap </td><td> BD555R </td></tr><tr><td> Metzenbaum tesoura, em linha reta </td><td> Aesculap </td><td> BC022R </td></tr><tr><td> Metzenbaum tesoura, curvada </td><td> Aesculap </td><td> BC023R </td></tr><tr><td> Tesouras curvas delicadas, </td><td> Aesculap </td><td> BC061R </td></tr><tr><td> Fórceps da artéria, curvada </td><td> Aesculap </td><td> BH109R </td></tr><tr><td> Fórceps da artéria, curvado, dentes 1x2 </td><td> Aesculap </td><td> BH121R </td></tr><tr><td> Sonda, de duas pontas </td><td> Aesculap </td><td> BN113R </td></tr><tr><td> Suporte de agulha Micro </td><td> Aesculap </td><td> FM 541R </td></tr><tr><td> Micro pinça </td><td> Aesculap </td><td> FM571R </td></tr><tr><td> Micro tesoura </td><td> AESCulap </td><td> FM470R </td></tr><tr><td> Cautério olho descartável </td><td> John Weiss Internacional </td><td> 0111122 </td></tr><tr><td> Cotonetes </td><td> Hartmann AG </td><td> 9679369 </td></tr></tbody></table> Tabela 3. Equipamento cirúrgico.

roux-en-y gastric bypass operation in rats

Atualmente, a terapia mais eficaz para o tratamento da obesidade mórbida para induzir perda de peso significativa e mantida corpo com um benefício comprovado de mortalidade é de 1,2 a cirurgia bariátrica. Consequentemente, tem havido um aumento constante no número de operações bariátricas realizadas em todo o mundo nos últimos anos com o Roux-en-bypass gástrico em Y (bypass gástrico) é a operação mais realizada 3. Neste contexto, é importante entender os mecanismos fisiológicos por que o bypass gástrico induz e mantém perda de peso corporal. Estes mecanismos não são ainda totalmente conhecidos, mas podem incluir fome reduzidos e aumento da saciedade 4,5, maior gasto de energia 6,7, de preferência alterado para alimentos ricos em gordura e açúcar 8,9, sal alterada e tratamento de água do rim 10 como bem como alterações na microbiota intestinal 11. Tais mudanças observadas após bypass gástrico pode pelo menos em parte derivam comoa cirurgia altera o meio hormonal gástrica porque aumenta a libertação pós-prandial de péptido-YY (PYY) e glucagon-like peptide--1 (GLP-1), hormonas que são libertados pelo intestino, na presença de nutrientes e que reduzem a comer 12. Durante as últimas duas décadas, inúmeros estudos com ratos têm sido realizados para investigar alterações fisiológicas após o bypass gástrico. O modelo do rato de bypass gástrico tem provado ser uma ferramenta valiosa não menos experimental, pois imita o perfil de tempo e magnitude da perda de peso humano, mas também permite aos pesquisadores controlar e manipular críticos fatores anatômicos e fisiológicos, incluindo o uso de controles apropriados. Consequentemente, existe uma grande variedade de modelos de ratos bypass gástrico disponíveis na literatura em qualquer outra parte mais detalhe 13-15. A descrição da técnica cirúrgica exacta desses modelos varia amplamente e difere por exemplo, em termos de tamanho da bolsa, o membrocomprimentos, ea preservação do nervo vago. Se relatado, as taxas de mortalidade parecem variar de 0 a 35% 15. Além disso, a cirurgia foi realizada quase exclusivamente em ratos machos de diferentes estirpes e idades. Dietas pré e pós-operatório também variou significativamente. Variações técnicas e experimentais em modelos de ratos publicados gástrica de desvio complicar a comparação e identificação de potenciais mecanismos fisiológicos envolvidos na bypass gástrico. Não há nenhuma evidência clara de que qualquer um destes modelos é superior, mas não há uma necessidade emergente para a normalização do procedimento para a obtenção de dados consistentes e comparáveis. Este artigo visa, portanto, resumir e discutir detalhes técnicos e experimental do nosso modelo de rato previamente validado e publicado bypass gástrico.

Watch this Scientific Journal Video about Roux-en-Y Gastric Bypass Operation in Rats at JoVE.com

Roux-en-Y Gastric Bypass Operation in Rats

Numerosos estudos utilizando modelos de ratos bypass gástrico foram recentemente realizados para desvendar os mecanismos fisiológicos subjacentes de Roux-en-Y operações de bypass gástrico. Este artigo visa demonstrar e discutir os detalhes técnicos e experimental da nossa publicado modelo do rato de bypass gástrico para compreender as vantagens e limitações desta ferramenta experimental.

Roux-en-Y operação de bypass gástrico em ratos

Currently, the most effective therapy for the treatment of morbid obesity to induce significant and maintained body weight loss with a proven mortality ...

Research

JoVE Journal

Medicine

Acute Myocardial Infarction in Rats

Infarto Agudo do Miocárdio em Ratos

With heart failure leading the cause of death in the USA (Hunt), biomedical research is fundamental to advance medical treatments for cardiovascular ...

Medicina

Orthotopic Liver Transplantation in Rats

Transplante hepático ortotópico experimental em ratos

Clinical progress in the field of liver transplantation has been largely supported by animal models1,2. Since the publication of the first orthotopic rat ...

Intraoperative Gastroscopy for Tumor Localization in Laparoscopic Surgery for Gastric Adenocarcinoma

Gastroscopia intra-operatória para localização do tumor na cirurgia laparoscópica para gástrica Adenocarcinoma

Determining resection margins for gastric cancer, which are not exposed to the serosal surface of the stomach, is the most important procedure during ...

Vein Interposition Model: A Suitable Model to Study Bypass Graft Patency

Veia Interposição Modelo: Um modelo adequado para estudar Bypass Graft Perviedade

Bypass grafting is an established treatment method for coronary artery disease. Graft patency continues to be the Achilles heel of saphenous vein grafts. ...

Techniques of Sleeve Gastrectomy and Modified Roux-en-Y Gastric Bypass in Mice

Técnicas de gastrectomia vertical e modificado Roux-en-Y bypass gástrico em ratos

Obesity is a major public health issue, with a prevalence of 4 to 28% for men and 6.2 to 36.5% for women in Europe (from 2003 to 2008). Morbid obesity is ...

Cardiopulmonary Bypass in a Mouse Model: A Novel Approach

Bypass cardiopulmonar em um modelo do rato: uma nova abordagem

As prolonged cardiopulmonary bypass becomes more essential during cardiac interventions, an increasing clinical demand arises for procedure optimization ...

One-anastomosis Gastric Bypass (OAGB) in Rats

One-anastomosis Gastric Bypass OAGB in Rats

1-anastomose Bypass gástrico (OAGB) em ratos

The goal of this protocol is to set up a preclinical model of bariatric surgery and, more specifically, OAGB in obese rats. Based on this preclinical ...

Preparation of Decellularized Kidney Scaffolds in Rats

Preparação de andaimes renais descelularizados em ratos

Tissue engineering is a cutting-edge discipline in biomedicine. Cell culture techniques can be applied for regeneration of functional tissues and organs ...

A Protocol for Roux-en-Y Gastric Bypass in Rats using Linear Staplers

Um protocolo para bypass gástrico Roux-en-Y em ratos usando grampos lineares

Roux-en-Y gastric bypass (RYGB) is commonly performed for the treatment of severe obesity and type 2 diabetes. However, the mechanism of weight loss and ...

Robotic Central Pancreatectomy with Roux-en-Y Pancreaticojejunostomy

Pancreatectomia Central Robótica com Pancreaticojejunostomia Roux-en-Y

Central pancreatectomy is a parenchyma-sparing alternative to distal pancreatectomy in patients with a benign or low-grade malignant tumor in the body of ...