RT Journal Article
SR Electronic
T1 In vivo three-dimensional MR microscopy of mice with chronic relapsing experimental autoimmune encephalomyelitis after treatment with insulin-like growth factor-I.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 653
OP 658
VO 19
IS 4
A1 S Xu
A1 E K Jordan
A1 W Li
A1 Y Yang
A1 S A Chesnick
A1 H D Webster
A1 S Brocke
A1 L Quigley
A1 H F McFarland
A1 J A Frank
YR 1998
UL http://www.ajnr.org/content/19/4/653.abstract
AB PURPOSE The purpose of this study was to determine the ability of three-dimensional in vivo MR microscopy to depict the treatment effects of insulin-like growth factor-I (IGF-I) in SJL mice with chronic relapsing experimental autoimmune encephalomyelitis (crEAE).METHODS The experiments were performed at 4.7-T on 10 crEAE mice and on one set of control animals. Five crEAE mice were treated with IGF-I and five were treated with a placebo.RESULTS In the crEAE mice treated with the placebo, in vivo MR microscopy showed areas of abnormal signal throughout the cerebrum, brain stem, and cerebellum. These findings were not present in either the IGF-I-treated mice or the normal control animals. The diffuse alterations in signal intensity in the placebo-treated crEAE mice were not identified on histologic sections of the same areas.CONCLUSION Differences between the IGF-I- and placebo-treated groups may reflect changes in stabilization or permeability of cell membranes and/or of the blood-brain barrier, although other alternative contrast mechanisms could be playing a role. In vivo MR microscopy depicted changes resulting from treatment of crEAE with IGF-I.