AIM AND SCOPE: To determine the acute effects of increased intra-abdominal pressure (IAP) on the biochemistry, morphology, and contractility of the isolated terminal ileum of rats. BACKGROUND: Laparoscopic procedures are used clinically in diagnostic and treatment modalities and experimentally as a model of ischemia-reperfusion injury induced by the elevation of IAP. Although some clinical and in vivo experimental studies investigate the results of ischemia-reperfusion injury whether induced by elevated IAP or clamping, there is no in vitro study that has investigated the acute effects of high IAP mimicked by a laparoscopic intervention in any of the intra-abdominal organs (like terminal ileum) on the basis of contractility which represents the motility. METHODS: Twenty-four adult with either sex Sprague-Dawley rats were divided into three groups. The control group (Group I) was not subjected to any IAP. In Groups II and III, an IAP of 10 and 20 mmHg, respectively, was established by carbon dioxide pneumoperitoneum for a period of 60 min. Thirty minutes after the desufflation, the terminal ileum was removed for in vitro pharmacological investigation, measurement of malondialdehyde (MDA) values, and histopathological examination. Statistical comparisons among groups were done using the Kruskal-Wallis variance analysis, with post hoc comparison performed with the Mann-Whitney U-test. RESULTS: Tissue MDA value and the damage scores of mucosa and submucosa were significantly increased in both IAP groups. The smooth muscle layer was significantly damaged only in Group III. The contractions obtained by electrical field stimulation (EFS) were inhibited in both IAP groups, and the contractions to acetylcholine were inhibited in Group III when compared to the control group. CONCLUSIONS: In conclusion, we can say that pneumoperitoneum induced IAP may inhibit contractile responses, cause structural alterations which may be related to ischemia-reperfusion injury in rat terminal ileum.
AIM AND SCOPE: To determine the acute effects of increased intra-abdominal pressure (IAP) on the biochemistry, morphology, and contractility of the isolated terminal ileum of rats. BACKGROUND: Laparoscopic procedures are used clinically in diagnostic and treatment modalities and experimentally as a model of ischemia-reperfusion injury induced by the elevation of IAP. Although some clinical and in vivo experimental studies investigate the results of ischemia-reperfusion injury whether induced by elevated IAP or clamping, there is no in vitro study that has investigated the acute effects of high IAP mimicked by a laparoscopic intervention in any of the intra-abdominal organs (like terminal ileum) on the basis of contractility which represents the motility. METHODS: Twenty-four adult with either sex Sprague-Dawley rats were divided into three groups. The control group (Group I) was not subjected to any IAP. In Groups II and III, an IAP of 10 and 20 mmHg, respectively, was established by carbon dioxide pneumoperitoneum for a period of 60 min. Thirty minutes after the desufflation, the terminal ileum was removed for in vitro pharmacological investigation, measurement of malondialdehyde (MDA) values, and histopathological examination. Statistical comparisons among groups were done using the Kruskal-Wallis variance analysis, with post hoc comparison performed with the Mann-Whitney U-test. RESULTS: Tissue MDA value and the damage scores of mucosa and submucosa were significantly increased in both IAP groups. The smooth muscle layer was significantly damaged only in Group III. The contractions obtained by electrical field stimulation (EFS) were inhibited in both IAP groups, and the contractions to acetylcholine were inhibited in Group III when compared to the control group. CONCLUSIONS: In conclusion, we can say that pneumoperitoneum induced IAP may inhibit contractile responses, cause structural alterations which may be related to ischemia-reperfusion injury in rat terminal ileum.
Authors: N Fatih Yaşar; Riza Ozdemir; Enver Ihtiyar; Nilüfer Erkasap; Tülay Köken; Murat Tosun; Setenay Oner; Serdar Erkasap Journal: Curr Ther Res Clin Exp Date: 2010-06
Authors: Ester Párraga Ros; Laura Correa-Martín; Francisco M Sánchez-Margallo; Irma Eugenia Candanosa-Aranda; Manu L N G Malbrain; Robert Wise; Rafael Latorre; Octavio López Albors; Gregorio Castellanos Journal: Surg Endosc Date: 2018-05-17 Impact factor: 4.584
Authors: Jacek Koźlik; Joanna Przybyłowska; Kinga Mikrut; Wioletta A Żukiewicz-Sobczak; Jacek Zwoliński; Jacek Piątek; Paweł Sobczak Journal: Wideochir Inne Tech Maloinwazyjne Date: 2014-12-04 Impact factor: 1.195
Authors: Ester Párraga Ros; Laura Correa-Martín; Francisco M Sánchez-Margallo; Irma Eugenia Candanosa-Aranda; Manu L N G Malbrain; Robert Wise; Rafael Latorre; Octavio López Albors; Gregorio Castellanos Journal: PLoS One Date: 2018-01-22 Impact factor: 3.240