| Optimal pressure for low pressure controlled reperfusion to efficiently protect ischemic heart: an experimental study in rats. | |
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MedLine Citation:
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PMID: 19328961 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Recent work has demonstrated the benefit of low pressure (LP) reperfusion to protect the heart undergoing an ischemic insult. The goal of the present study was to determine the optimal pressure for the application of LP reperfusion. Isolated rats hearts (n = 30) were exposed to 40 minutes of global warm ischemia followed by 70 minutes of reperfusion with a pressure fixed at 100 cm H(2)O (normal pressure [NP] = control group), 85 cm (group LP [low pressure]-85), 70 cm (group LP-70), or 55 cm (group LP-55). Cardiac function was assessed during reperfusion using the Langendorff model. Myocardial necrosis was assessed by measuring lactate dehydrogenase (LDH) and creatine kinase (CK) leakage in the coronary effluents. Functional recovery was progressively and significantly improved with decreased perfusion pressure. Rate-pressure product (RPP) averaged 3765 +/- 408, 6824 +/- 439, and 12,036 +/- 664 mm Hg/min, respectively, among the control, LP-85, and LP-70 groups (P < .001, LP-70 vs other groups). However, RPP collapsed in the LP-55 group. Similarly, necrosis as measured by LDH and CK leakage progressively reduced between LP-100 and LP-70 hearts (P < .01), with a drastic increase in enzyme in the LP-55 group. In conclusion, this study demonstrated that 70 cm H(2)O is an optimal LP to improve postischemic contractile dysfunction and attenuate necrosis during reperfusion. |
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Authors:
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C Nemlin; S Benhabbouche; J C Bopassa; L Sebbag; M Ovize; R Ferrera |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Transplantation proceedings Volume: 41 ISSN: 0041-1345 ISO Abbreviation: Transplant. Proc. Publication Date: 2009 Mar |
Date Detail:
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Created Date: 2009-03-30 Completed Date: 2009-07-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0243532 Medline TA: Transplant Proc Country: United States |
Other Details:
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Languages: eng Pagination: 703-4 Citation Subset: IM |
Affiliation:
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INSERM U886 and Université Claude Bernard Lyon-1, Lyon, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Diastole Disease Models, Animal L-Lactate Dehydrogenase / blood Male Myocardial Ischemia / pathology, prevention & control* Myocardial Reperfusion / methods* Pressure Rats Rats, Wistar Reperfusion Injury / pathology Ventricular Function, Left / physiology |
| Chemical | |
Reg. No./Substance:
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EC 1.1.1.27/L-Lactate Dehydrogenase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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