| Alterations in membrane potential in mitochondria isolated from brain subregions during focal cerebral ischemia and early reperfusion: evaluation using flow cytometry. | |
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MedLine Citation:
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PMID: 19488856 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Mitochondria isolated from brain tissue following middle cerebral artery occlusion or during early reperfusion were tested for their ability to generate a membrane potential under standard conditions in vitro. Membrane potential was evaluated based on rhodamine 123 fluorescence in the mitochondria as detected using flow cytometry. Compared with equivalent samples from the contralateral hemisphere, the geometric mean fluorescence was significantly lower in mitochondria prepared from the striatum and perifocal tissue in the cortex at 3 h ischemia. During reperfusion, this property was decreased in mitochondria from tissue in the striatum and cortex that had been part of severely ischemic core tissue during the arterial occlusion. These findings provide additional evidence that mitochondria develop changes during ischemia and reperfusion that are likely to limit their ability to respond to changing energy requirements and contribute to cell dysfunction and cell death. It also demonstrates the ability to gain a sensitive measure of these mitochondrial changes using flow cytometry. |
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Authors:
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Diane R Lee; Stephen C Helps; Peter J Macardle; Michael Nilsson; Neil R Sims |
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Publication Detail:
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Type: Comparative Study; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't Date: 2009-06-02 |
Journal Detail:
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Title: Neurochemical research Volume: 34 ISSN: 1573-6903 ISO Abbreviation: Neurochem. Res. Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-08-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7613461 Medline TA: Neurochem Res Country: United States |
Other Details:
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Languages: eng Pagination: 1857-66 Citation Subset: IM |
Affiliation:
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Discipline of Medical Biochemistry, School of Medicine, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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