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Delayed pharmacological pre-conditioning effect of mitochondrial ATP-sensitive potassium channel opener on neurologic injury in a rabbit model of spinal cord ischemia
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Kyoung Ok | - |
dc.contributor.author | Choe, G | - |
dc.contributor.author | Chung, S H | - |
dc.contributor.author | Kim, C S | - |
dc.date.accessioned | 2010-01-27T08:03:56Z | - |
dc.date.available | 2010-01-27T08:03:56Z | - |
dc.date.issued | 2007-11-17 | - |
dc.identifier.citation | Acta Anaesthesiol Scand. 2008 Feb;52(2):236-42. Epub 2007 Nov 13. | en |
dc.identifier.issn | 1399-6576 (Electronic) | - |
dc.identifier.issn | 1399-6576 (Linking) | - |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=18005376 | - |
dc.identifier.uri | https://hdl.handle.net/10371/45517 | - |
dc.description.abstract | BACKGROUND: Diazoxide, pharmacological openers of mitochondrial ATP-sensitive potassium channels have been shown to induce early pre-conditioning in the spinal cord. Here, the authors investigated whether diazoxide also induce delayed pre-conditioning and thereby reduce neurologic complications using a rabbit model of spinal cord ischemia. METHODS: Infrarenal blood flow was interrupted for 20 min in 21 rabbits. Non-treated control animals received no pre-treatment. Diazoxide (5 mg/kg) were given 48 h before 20 min ischemia in the 48-h DZ group, whereas 15-min DZ group received diazoxide (5 mg/kg) 15 min before 20-min ischemia. Neurological functions were evaluated using Johnson scores for 3 days after reperfusion, after which, spinal cords were procured for hematoxylin and eosin staining for cell counting. RESULTS: Johnson scores revealed a marked improvement in both the diazoxide-treated groups vs. the non-treated control group at 3, 24, 48, and 72 h after reperfusion (P<0.01). The histologic changes were proportional to the Johnson scores, with better preservation of motor neuron numbers in the animals of the 48-h DZ and 15-min DZ group relative to the non-treated controls (81+/-12, 90+/-10, 50+/-23 motor neurons, respectively, P<0.01). No difference was found between the 48-h DZ group and 15-min DZ group with respect to the Johnson scores or neuron numbers. CONCLUSIONS: The study demonstrates that pre-treatment with diazoxide 48 h before ischemia, induce delayed pharmacological pre-conditioning, thereby significantly improving clinical neurologic scores and histologic findings in this animal model. | en |
dc.language.iso | en | en |
dc.publisher | Acta Anaesthesiol Scand | - |
dc.subject | Analgesics/administration & dosage | en |
dc.subject | Animals | en |
dc.subject | Blood Gas Analysis | en |
dc.subject | Diazoxide/*pharmacology | en |
dc.subject | Disease Models, Animal | en |
dc.subject | Ischemic Preconditioning/*methods | en |
dc.subject | Ketamine/administration & dosage | en |
dc.subject | Male | en |
dc.subject | Neurologic Examination/drug effects | en |
dc.subject | Neuroprotective Agents/*pharmacology | en |
dc.subject | Potassium Channels/*pharmacology | en |
dc.subject | Rabbits | en |
dc.subject | Random Allocation | en |
dc.subject | Sodium Chloride/administration & dosage | en |
dc.subject | Spinal Cord/drug effects/physiopathology | en |
dc.subject | Spinal Cord Ischemia/*drug therapy/physiopathology | en |
dc.subject | Time Factors | en |
dc.title | Delayed pharmacological pre-conditioning effect of mitochondrial ATP-sensitive potassium channel opener on neurologic injury in a rabbit model of spinal cord ischemia | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 김경옥 | - |
dc.identifier.doi | 10.1111/j.1399-6576.2007.01534.x | - |
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