The Calibre of Cerebral Arteries of the Rat Studied by Carotid Angiography: a Model System for Studying the Aetiology of Human Cerebral Arterial Constriction After Aneurysmal Rupture

Overview

Journal Neuroradiology

Specialties Neurology
Radiology

Date 1981 Jan 1

PMID 7266859

Citations 6

Authors

D J Boullin

V Aitken

G H DU BOULAY

P Tagari

Affiliations

Soon will be listed here.

Abstract

Rupture of human cerebral arterial aneurysms is followed by prolonged cerebral arterial constriction; there is evidence that cerebrospinal fluid (CSF) from such patients contains vasoconstrictor substances which may cause the arterial constriction. The aim of this study was to develop a small animal model for investigating the effects of such CSF on the calibre of cerebral vessels in situ. Carotid angiography of the cerebral arteries of the rat visualizes the internal carotid, middle cerebral, anterior cerebral and stapedial arteries plus the vertebrobasilar system. Prostacyclin was injected during carotid catheterisation to prevent spontaneous and random occlusion of these cerebral arteries; in the presence of prostacyclin there was no arterial occlusion for up to 5 h. The resolution achieved by the angiographic technique, which magnified the cerebral circulations 2.9 times, was sufficient to measure the diameter of the internal carotid and stapedial arteries of the rat. Intracarotid infusion of 1.0 ml CSF collected from patients with ruptured cerebral arterial aneurysms caused a rapidly developing contraction of cerebral arteries lasting up to 5 h. Thus, we consider that the rat may also be used as a model for investigating the aetiology of human cerebral arterial constriction after aneurysmal rupture.

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