Document Detail


Computer-regulated constant pressure ischemia in the rat: the animal model.
MedLine Citation:
PMID:  3343296     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A system permitting computer control of partial ischemia in the normotensive rat brain was developed. Right carotid cannulation and bilateral subclavian artery occlusion made the input of blood to the brain dependent solely on left carotid artery flow. Perfusion pressure was controlled by partial compression of this artery with a balloon. The system can produce a range of partial ischemic states maintaining perfusion pressures from 4 to 20 mm Hg. The adequacy of the servo-control system was evaluated in greater detail at requested perfusion pressures of 7 and 12 mm Hg in 14 male Sprague-Dawley rats (300-450 g). Experimentally obtained cerebral perfusion pressures of 6.84 (SD = 0.25, n = 7) and 11.72 (SD = 0.89, n = 7) mm Hg, respectively, demonstrate the efficacy of the system. CBFs were concurrently measured at four separate bilaterally symmetric anatomic sites (cortex, hippocampus, thalamus, and substantia nigra). Significant intra- and interhemispheric differences were found to exist, with regional flows monitored ipsilaterally to the carotid balloon exceeding those of the opposite hemisphere. In summary, this acute model of cerebral ischemia permits control of perfusion pressure over the entire critical partial ischemic range.
Authors:
R J Boehme; K A Conger; M L Anderson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism     Volume:  8     ISSN:  0271-678X     ISO Abbreviation:  J. Cereb. Blood Flow Metab.     Publication Date:  1988 Apr 
Date Detail:
Created Date:  1988-04-06     Completed Date:  1988-04-06     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8112566     Medline TA:  J Cereb Blood Flow Metab     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  236-43     Citation Subset:  IM    
Affiliation:
Department of Pathology, University of Alabama, Birmingham 35233.
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Pressure
Brain / physiopathology*
Brain Ischemia / physiopathology*
Computers*
Disease Models, Animal*
Microcomputers*
Rats
Rats, Inbred Strains*
Grant Support
ID/Acronym/Agency:
NS-08802/NS/NINDS NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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