Selective, reversible occlusion of the middle cerebral artery in rats by an intraluminal approach. Optimized filament design and methodology

Jianya Ma, Liang Zhao, Thaddeus Nowak

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

These studies optimized design and application of an intraluminal filament method to achieve selective middle cerebral artery (MCA) occlusion in rats. Silicone plugs of 300 μm diameter and 700-800 μm length were molded onto 6-0 suture. These were introduced into Wistar rats previously fitted with telemetric probes, using established placement procedures, with and without heparinization. Temperature and activity were monitored for 3 days, after which lesion volumes were assessed by triphenyltetrazolium chloride staining. Optimized filaments entered the MCA in 85% of Wistar rats, failures being attributable to anatomical variation at its origin from the internal carotid artery. Infarcts restricted to the MCA territory were apparent after 90 min occlusion, and maximal after 3 h occlusion. Intraischemic hyperthermia was noted in a third of occlusions performed without heparin, but never with anticoagulant treatment. Permanent occlusions were also evaluated in Fisher, Lewis, Long-Evans, Spontaneously Hypertensive and Sprague-Dawley rats, and Wistar rats from a second supplier, and compared with data for surgical MCA occlusions. Success rates varied among strains, but infarct volumes correlated with those obtained after surgical occlusions in respective populations. These studies demonstrate the feasibility and limitations of reversible and selective intraluminal filament occlusion of the MCA in rats.

Original languageEnglish (US)
Pages (from-to)76-83
Number of pages8
JournalJournal of Neuroscience Methods
Volume156
Issue number1-2
DOIs
StatePublished - Sep 30 2006

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Middle Cerebral Artery Infarction
Wistar Rats
Middle Cerebral Artery
Feasibility Studies
Internal Carotid Artery
Silicones
Anticoagulants
Sutures
Sprague Dawley Rats
Heparin
Fever
Staining and Labeling
Temperature
Population

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

Cite this

Selective, reversible occlusion of the middle cerebral artery in rats by an intraluminal approach. Optimized filament design and methodology. / Ma, Jianya; Zhao, Liang; Nowak, Thaddeus.

In: Journal of Neuroscience Methods, Vol. 156, No. 1-2, 30.09.2006, p. 76-83.

Research output: Contribution to journalArticle

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