Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats
PURPOSE: Colorectal anastomosis is a constant worry-issue among surgeons because of high rates of complications, specially the dehiscence. The preoperative irradiation on cancer surgeries might interfere in the healing process, leading to an unfavorable outcome. METHODS: In the present study, two groups of rats were irradiated previously to a colorectal anastomosis surgery, with intervals of 4 and 8 weeks between the procedures. Seven days after the surgery, healing process was evaluated for dehiscence presence and histologic inflammatory characteristics. Also, levels of hydroxyproline, metalloproteinases and vascular endothelial growth factor were measured. RESULTS: Our results showed a higher incidence of dehiscences on the animals submitted to irradiation, compared to controls, with a reduced inflammatory activity in the healing tissue. DISCUSSION: Comparing both irradiated groups, those irradiated 8 weeks before surgery showed higher levels of hydroxyproline and metalloproteinases, indicating higher efficiency of the healing process. In conclusion, preoperative irradiation interferes with intestinal anastomosis healing and a larger time interval between both procedures is safer in terms of the healing quality.
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Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia
2008
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oai:scielo:S0102-865020080007000052008-05-20Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in ratsFranca,AlexandreRamalho,Fernando SilvaRamalho,Leandra Naira ZambelliRocha,José Joaquim Ribeiro daFéres,Omar Colorectal Anastomosis Preoperative Irradiation Healing Dehiscences Irradiation Colorectal Cancer PURPOSE: Colorectal anastomosis is a constant worry-issue among surgeons because of high rates of complications, specially the dehiscence. The preoperative irradiation on cancer surgeries might interfere in the healing process, leading to an unfavorable outcome. METHODS: In the present study, two groups of rats were irradiated previously to a colorectal anastomosis surgery, with intervals of 4 and 8 weeks between the procedures. Seven days after the surgery, healing process was evaluated for dehiscence presence and histologic inflammatory characteristics. Also, levels of hydroxyproline, metalloproteinases and vascular endothelial growth factor were measured. RESULTS: Our results showed a higher incidence of dehiscences on the animals submitted to irradiation, compared to controls, with a reduced inflammatory activity in the healing tissue. DISCUSSION: Comparing both irradiated groups, those irradiated 8 weeks before surgery showed higher levels of hydroxyproline and metalloproteinases, indicating higher efficiency of the healing process. In conclusion, preoperative irradiation interferes with intestinal anastomosis healing and a larger time interval between both procedures is safer in terms of the healing quality.info:eu-repo/semantics/openAccessSociedade Brasileira para o Desenvolvimento da Pesquisa em CirurgiaActa Cirúrgica Brasileira v.23 suppl.1 20082008-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502008000700005en10.1590/S0102-86502008000700005 |
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Franca,Alexandre Ramalho,Fernando Silva Ramalho,Leandra Naira Zambelli Rocha,José Joaquim Ribeiro da Féres,Omar |
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Franca,Alexandre Ramalho,Fernando Silva Ramalho,Leandra Naira Zambelli Rocha,José Joaquim Ribeiro da Féres,Omar Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats |
author_facet |
Franca,Alexandre Ramalho,Fernando Silva Ramalho,Leandra Naira Zambelli Rocha,José Joaquim Ribeiro da Féres,Omar |
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Franca,Alexandre |
title |
Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats |
title_short |
Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats |
title_full |
Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats |
title_fullStr |
Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats |
title_full_unstemmed |
Effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats |
title_sort |
effects of preoperative pelvic irradiation on colonic anastomosis healing: an experimental study in rats |
description |
PURPOSE: Colorectal anastomosis is a constant worry-issue among surgeons because of high rates of complications, specially the dehiscence. The preoperative irradiation on cancer surgeries might interfere in the healing process, leading to an unfavorable outcome. METHODS: In the present study, two groups of rats were irradiated previously to a colorectal anastomosis surgery, with intervals of 4 and 8 weeks between the procedures. Seven days after the surgery, healing process was evaluated for dehiscence presence and histologic inflammatory characteristics. Also, levels of hydroxyproline, metalloproteinases and vascular endothelial growth factor were measured. RESULTS: Our results showed a higher incidence of dehiscences on the animals submitted to irradiation, compared to controls, with a reduced inflammatory activity in the healing tissue. DISCUSSION: Comparing both irradiated groups, those irradiated 8 weeks before surgery showed higher levels of hydroxyproline and metalloproteinases, indicating higher efficiency of the healing process. In conclusion, preoperative irradiation interferes with intestinal anastomosis healing and a larger time interval between both procedures is safer in terms of the healing quality. |
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Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia |
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2008 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502008000700005 |
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