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Anesth Analg 2006;102:1722-1727
© 2006 International Anesthesia Research Society
doi: 10.1213/01.ane.0000216006.82190.4a

ANESTHETIC PHARMACOLOGY

The Effects of Cyclosporin A and Insulin on Ischemic Spinal Cord Injury in Rabbits

Shunsuke Tsuruta, MD, Mishiya Matsumoto, MD, Shiro Fukuda, MD, Atsuo Yamashita, MD, Ying Jun Cui, MD, Hiroya Wakamatsu, MD, and Takefumi Sakabe, MD

Department of Anesthesiology-Resuscitology, Yamaguchi University School of Medicine, Yamaguchi, Japan

Address correspondence and reprint requests to Mishiya Matsumoto, MD, Department of Anesthesiology-Resuscitology, Yamaguchi University School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan. Address e-mail to mishiya{at}yamaguchi-u.ac.jp.

We examined the effects of cyclosporin A (CsA), a drug that inhibits mitochondrial permeability transition pore, and insulin on ischemic spinal cord damage in rabbits. We assigned rabbits to 5 groups (n = 6 in each); sham barrier-opened group (sham BO), barrier-opened group (BO), barrier-opened-CsA group (BO-CsA), barrier-opened-insulin group (BO-I), and barrier-opened-CsA-insulin group (BO-CsA-I). The blood-spinal cord barrier was opened to facilitate drug penetration by a mild injury to the lumber spinal cord on day 1. CsA (10 mg/kg per day IV) was administered on day 3 to day 5 (total 30 mg/kg). Insulin was administered 30 min before ischemia. In all groups, spinal cord ischemia was produced on day 5 by occluding the abdominal aorta for 13 min. Neurological and histopathological evaluations were performed 4 days after ischemia. In group BO-CsA, blood glucose concentrations were significantly larger compared with the other four groups, and no protection was observed. In contrast, hindlimb motor function in groups BO-I and Bo-CsA-I and histopathology in group BO-CsA-I were significantly better than in groups sham BO, BO, and BO-CsA. The results indicate that insulin protects against ischemic spinal cord injury, whereas the effect of CsA is, at best, minimal.




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 Anesth. Analg.Home page
D. Nagamizo, S. Tsuruta, M. Matsumoto, H. Matayoshi, A. Yamashita, and T. Sakabe
Tight Glycemic Control by Insulin, Started in the Preischemic, but Not Postischemic, Period, Protects Against Ischemic Spinal Cord Injury in Rabbits
Anesth. Analg., November 1, 2007; 105(5): 1397 - 1403.
[Abstract] [Full Text] [PDF]


Lippincott, Williams & Wilkins Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins and Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999 HighWire Press
Copyright © 2006 by the International Anesthesia Research Society.