| Effect of a novel solution for organ preservation on equine large colon in an isolated pulsatile perfusion system. | |
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MedLine Citation:
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PMID: 18356130 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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REASONS FOR PERFORMING STUDY: Several therapeutic agents have been tested in models of ischaemia and reperfusion injury (IRI) in equine jejunum, with mixed results. This study was based on the use of an organ perfusion solution (OPS) designed to protect human allografts from IRI. HYPOTHESIS: A modified OPS can preserve the integrity of equine large colon during 12 h of isolated pulsatile perfusion, in the absence of oxygen and blood. METHODS: Segments of large colon were removed from anaesthetised horses, the contents removed and the mucosa rinsed with 0.9% saline. Experimental segments were perfused for 12 h with one litre modified OPS (n = 7) delivered by pulsatile flow through an extracorporeal circuit. Control segments (n = 4) were perfused on the same circuit with one litre of autologous blood. Vascular resistance, flow and pressure were measured serially, and aliquots of OPS and blood drawn hourly for routine biochemical analyses. Mucosal biopsies of the experimental and control segments were taken at 0, 6 and 12 h and in vivo mucosal tissue at 0 h for baseline comparison. All biopsies underwent histomorphometric analysis and immunohistochemical assessment of calprotectin activity. RESULTS: All colon segments were machine perfused without technical complications. Vascular and biochemical indices remained constant over 12 h in the OPS group, and were constant over 6 h in the control group, but deteriorated later. Mucosal integrity, expression of cyclooxygenases-1 and -2, and expression of mucosal calprotectin were unchanged in the OPS group compared with the baseline tissues, and mucosal integrity was superior to the control tissues. CONCLUSIONS: A modified OPS designed to target specific pathways of damage from IRI can preserve colonic mucosal integrity for 12 h in the absence of blood and oxygen. |
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Authors:
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M M R Polyak; A J Morton; A Grosche; S Matyjaszek; D E Freeman |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Equine veterinary journal Volume: 40 ISSN: 0425-1644 ISO Abbreviation: Equine Vet. J. Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-08-01 Completed Date: 2008-10-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0173320 Medline TA: Equine Vet J Country: England |
Other Details:
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Languages: eng Pagination: 306-12 Citation Subset: IM |
Affiliation:
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Island Whirl Equine Colic Research Laboratory, Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Blood Flow Velocity / veterinary Colon / blood supply, drug effects*, pathology Extracorporeal Circulation / veterinary Female Horse Diseases / pathology, prevention & control* Horses Immunohistochemistry / veterinary Intestinal Mucosa / drug effects, pathology Leukocyte L1 Antigen Complex / metabolism* Male Organ Preservation Solutions / pharmacology* Reperfusion Injury / prevention & control, veterinary* Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Leukocyte L1 Antigen Complex; 0/Organ Preservation Solutions |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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