The benefit of hypothermia in experimental ischemic stroke is not affected by pethidine
AuthorSena, ES; Jeffreys, AL; Cox, SF; Sastra, SA; Churilov, L; Rewell, S; Batchelor, PE; van der Worp, HB; Macleod, MR; Howells, DW
Source TitleINTERNATIONAL JOURNAL OF STROKE
University of Melbourne Author/sBatchelor, Peter; Howells, David; JEFFREYS, AMY; Churilov, Leonid; Cox, Susan; Rewell, Sarah; SASTRA, STEPHEN
AffiliationFlorey Department Of Neuroscience And Mental Health
Document TypeJournal Article
CitationsSena, E. S., Jeffreys, A. L., Cox, S. F., Sastra, S. A., Churilov, L., Rewell, S., Batchelor, P. E., van der Worp, H. B., Macleod, M. R. & Howells, D. W. (2013). The benefit of hypothermia in experimental ischemic stroke is not affected by pethidine. INTERNATIONAL JOURNAL OF STROKE, 8 (3), pp.180-185. https://doi.org/10.1111/j.1747-4949.2012.00834.x.
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C1 - Journal Articles Refereed
BACKGROUND: Hypothermia is a promising experimental treatment for acute ischemic stroke. Human trials are still at an early stage, with the focus now on using hypothermia in awake patients. Pethidine (meperidine) is the principle agent used to control shivering in humans; however, whether it has any modulating effects on the neuroprotective efficacy of hypothermia is unknown. AIM: The aim of this study was to determine if pethidine influences the neuroprotective effect of hypothermia in experimental stroke. METHODS: Seventy-two male spontaneously hypertensive rats were anesthetized with isoflurane and randomly assigned to either normothermia (37. 4 °C rectal temperature); hypothermia (33 °C maintained for 130 mins); normothermia plus pethidine (2.5 mg/kg); or hypothermia plus pethidine. Temporary (90 mins) endovascular occlusion of the middle cerebral artery was induced blinded to treatment allocation and was confirmed with laser Doppler flowmetry. Pethidine and cooling were started immediately after vessel occlusion. Animals in the normothermia group had active temperature management using a heat lamp and fan. Assessments of outcome were carried out 24 after the induction of injury. RESULTS: Thirteen animals met our prespecified criteria for exclusion, and data for 59 rats were presented here. Hypothermia was associated with a 63% reduction in infarct size, and pethidine had no significant impact on the efficacy of hypothermia. No effects were observed in neurobehavioral outcome or edema volume across experimental groups. CONCLUSIONS: The effects of hypothermia in a model of focal ischemia are not affected by administration of pethidine.
KeywordsCardiology (incl. Cardiovascular Diseases); Central Nervous System; Expanding Knowledge in the Medical and Health Sciences
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