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저산소성 허혈성 뇌손상 신생백서에서 21-aminosteroid U74389G 투여가 뇌손상 및 뇌부종에 미치는 영향

Other Titles
 Effect of 21-aminosteroid U74389G on the Extent of Brain Damage and Edema in the Newborn Rats with Hypoxic-ischemic Injury 
Authors
 이미선  ;  박문성  ;  박국인  ;  이철  ;  한동관 
Citation
 Journal of the Korean Society of Neonatology (대한신생아학회지), Vol.8(2) : 265-271, 2001 
Journal Title
 Journal of the Korean Society of Neonatology (대한신생아학회지) 
ISSN
 1226-1513 
Issue Date
2001
Keywords
21-aminosteroid U74389G ; Hypoxic-ischemic brain injury ; Perinatal brain damage ; Newborn rat ; Lipid peroxidation ; Oxygen-free radical ; Brain edema
Abstract
PURPOSE To investigate the effect of 21-aminosteroid U74389G (U) on the extent of brain damage and edema formation in the newborn rats with hypoxic ischemic (HI) brain injury. METHODS This is a randomized, placebo-controlled, experimental study. The subjects were 113 seven-days-old rats with HI injury. Pups were treated with 3, 10, or 20 mg/ kg of U intraperitoneally 30 minutes before hypoxia (Group 1, 2, 3: n=10, 13, 11), 10 mg/kg of U immediately after hypoxia (n=11) (Group 4), 10 mg/kg of U 30 minutes before and after hypoxia (n=n=13) (Group 5), or vehicle (n=12) (Group C). We expressed the degree of brain infarction and brain edema in % atrophy (Left hemisphere-Right hemisphere/Left hemispherex100) and water content % (wet weight-dry weight/wet weightx100) RESULTS: There were significant reductions in the diameters of right hemisphere compared with those of left hemisphere in vehicle and U treated animals (P<0.05). As to the cortical thickness, group 2, 3 and 5 pups showed no significant reductions in the right side compared with the left side implicating that U treatment in these groups was of benefit in attenuating HI cortical injury, while there was significant difference between the right and left side in group 1, 4 and C animals (P<0.001). There was a significant difference (P< 0.01) in % atrophy of group 2, 3, 5 versus group C, but the mean % atrophy was similar in groups 1, 4 and C. There was a significant (P<0.05) increase of water content in right hemisphere compared with left hemisphere both in U and vehicle treated groups. CONCLUSION Pre-treatment and prepost-treatment at moderate doses (10 or more mg/kg) of 21-aminosteroid U74389G reduced the extent of perinatal hypoxic-ischemic brain damages, especially in the cortex, but do not affect the extent of brain edema.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Park, Kook In(박국인) ORCID logo https://orcid.org/0000-0001-8499-9293
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/166242
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