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Title: Development of a refined ex vivo model of peritoneal adhesion formation, and a role for connexin 43 in their development
Authors: Chua, Jia Wang
Madden, Leigh
Lim, Sophia Beng Hui
Philips, Anthony R. J.
Becker, David Lawrence
Keywords: Science::Medicine
Issue Date: 2022
Source: Chua, J. W., Madden, L., Lim, S. B. H., Philips, A. R. J. & Becker, D. L. (2022). Development of a refined ex vivo model of peritoneal adhesion formation, and a role for connexin 43 in their development. Molecular and Cellular Biochemistry, 477(1), 295-305.
Journal: Molecular and Cellular Biochemistry
Abstract: Despite many advances across the surgical sciences, post-surgical peritoneal adhesions still pose a considerable risk in modern-day procedures and are highly undesirable. We have developed a novel mouse peritoneal strip ex vivo adhesion model which may serve to bridge the gap between single cell culture systems and in vivo animal drug testing for the assessment of potential anti-adhesion agents, and study of causality of the process. We investigated the optimal conditions for adhesion formation with mouse peritoneal tissue strips by modifying an existing ex vivo rat model of peritoneal adhesions. We assessed the impact of the following conditions on the formation of adhesions: contact pressure, abrasions, and the presence of clotted blood. Macroscopic adhesions were detected in all mouse peritoneal strips exposed to specific conditions, namely abrasions and clotted blood, where peritoneal surfaces were kept in contact with pressure using cotton gauze in a tissue cassette. Adhesions were confirmed microscopically. Interestingly, connexin 43, a gap junction protein, was found to be upregulated at sites of adhesions. Key features of this model were the use of padding the abraded tissue with gauze and the use of a standardised volume of clotted blood. Using this model, peritoneal strips cultured with clotted blood between abraded surfaces were found to reproducibly develop adhesion bands at 72 h. Our goal is to develop a model that can be used in genetically modified mice in order to dissect out the role of particular genes in adhesion formation and to test drugs to prevent adhesion formation.
ISSN: 0300-8177
DOI: 10.1007/s11010-021-04282-3
Schools: Lee Kong Chian School of Medicine (LKCMedicine) 
Rights: © 2021 The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:LKCMedicine Journal Articles

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