| Differential changes of regional cerebral blood flow in two bat species during induced hypothermia measured by perfusion-weighted magnetic resonance imaging. | |
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MedLine Citation:
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PMID: 20680296 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Cerebral blood flow (CBF) of a vespertilionid bat, Miniopterus fuliginosus (M. f.), and a pteropodid bat, Rousettus leschenaultii (R. l.) was measured non-invasively during induced hypothermia (37-10°C for M. f. and 37-24°C for R. l.) with perfusion-weighted magnetic resonance imaging. In both species, the average CBF was found to decrease with rectal temperature. The patterns of hypothermia-induced regional CBF changes, however, were different between the two species. In the pteropodid bat, the extent of CBF decrease at lower rectal temperature was similar in the cortex and thalamus, resulting in an unchanged thalamus/cortex CBF ratio. In contrast, the thalamus/cortex CBF ratio in the vespertilionid species increased progressively with decreasing rectal temperature (1.52 ± 0.14 at 37 ± 1°C vs. 2.28 ± 0.29 at 10 ± 1°C). These results suggest that the manner in which the two bat species cope with low body temperature may be reflected by a differential CBF regulation between thalamus and cortex. |
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Authors:
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Kailiang Hu; Yuguang Meng; Hao Lei; Shuyi Zhang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-08-01 |
Journal Detail:
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Title: Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology Volume: 181 ISSN: 1432-136X ISO Abbreviation: J. Comp. Physiol. B, Biochem. Syst. Environ. Physiol. Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2011-01-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8413200 Medline TA: J Comp Physiol B Country: Germany |
Other Details:
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Languages: eng Pagination: 117-23 Citation Subset: IM |
Affiliation:
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School of Life Sciences, East China Normal University, 3663# Zhongshanbei Road, Shanghai 200062, People's Republic of China. |
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