机构地区:[1]第四军医大学航空航天医学系航空航天卫生学教研室,西安710032
出 处:《中华医学杂志》2016年第27期2192-2195,共4页National Medical Journal of China
基 金:国家自然科学基金(81101466);陕西省科学技术研究发展计划项目(2011K14-07-12)
摘 要:目的探讨高压氧对急性一氧化碳(CO)中毒大鼠脑组织抗氧化能力的影响。方法66只sD大鼠按照随机数字表法分为对照组、CO染毒组和高压氧(HBO)治疗组。通过Morris水迷宫实验观察大鼠行为学变化,通过测定各组大鼠脑组织总抗氧化能力(T-AOC)及谷胱甘肽过氧化物酶(GSH.PX)、谷胱甘肽还原酶(GR)、过氧化氢酶(CAT)三种抗氧化酶的活性评价脑组织抗氧化能力。结果在CO染毒组,Morris水迷宫定向航行实验的逃避潜伏期(57±5、54±8、52±8、52±10、46±8)s与对照组(45±17、43±14、35±12、34±11、29±13)s和高压氧治疗组(40±10、39±6、35±9、31±11、21±10)s相比,均显著延长(P〈0.05),空间探索实验的第一象限游泳时间(8±5)s与对照组(51±6)s和高压氧治疗组(40±10)s相比明显缩短(P〈0.05),脑组织T—AOC活性(0.68±0.09、0.45±0.17、0.71±0.18、0.69±0.29、0.48±0.29)U/mg与对照组(1.25±0.40)U/mg和高压氧治疗组(0.97±0.31、0.97±0.39、1.45±0.15、1.40±0.25、1.20±0.20)U/mg相比明显降低(P〈0.05),脑组织GSH-PX活性(42±13、106±46、197±49、173±42、429±58)U/mg与对照组(182±53)U/mg和高压氧治疗组(203±63、325±86、389±29、385±100、453±32)U/mg相比明显降低。GR活性(4.3±0.7、2.6±0.5、3.0±1.2、1.8±0.8、3.2±1.9)U/mg与对照组(14.5±3.0)U/rag和高压氧治疗组(13.9±3.3、4.3±1.0、3.9±0.7、4.8±0.9、4.6±0.9)U/rag相比明显降低。CAT活性(1.6士0.8、4.3±1.6、3.9±1.0、8.5±2.6、5.4±1.7)U/mg与对照组(5.2±1.3)U/mg和高压氧治疗组(5.2±2.2、8.8±2.8、5.3±1.0、9.2±2.1、14.1±3.8)U/mg相比明显降低。结论HBO治疗可改善由CO中毒所致的行为学异常。急性CO中毒后大鼠脑Objective This study was designed to observe the antioxidant effects of hyperbaric oxygen (HBO) on brains of rats after acute carbon monoxide (CO) poisoning. Methods Sixty-six Sprague- Dawley (SD) male rats were divided into three groups including control group, CO group and HBO group. Morris water maze experiments were used for monitoring cognitive function. Antioxidant capacities were evaluated by detecting T-AOC, GSH-PX, GR and CAT activities in the brain. Results Compared with the control group (45 ± 17, 43 ± 14, 35 ± 12, 34 ±11,29 ± 13) s and the HBO group (40 ± 10, 39 ± 6, 35 ± 9, 31 ± 11, 21 ± 10) s, the CO group (57 ±5, 54 ±8, 52 ±8, 52 ± 10, 46 ±8) s had the longer escape latency (P 〈0. 05). Compared with the control group (51 ±6) s and the HBO group(40 ± 10) s, the CO group (8 ± 5) s had the shorter swimming time in I quadrant (P 〈 0. 05 ). Compared with the control group ( 1.25±0. 40) U/rag and the HBO group(0. 97 ±0. 31,0. 97±0. 39, 1.45 ±0. 15, 1.40 ±0. 25, 1.20 ± 0. 20) U/mg, the CO group (0. 68 ±0. 09, 0.45 ±0. 17, 0. 71 ±0. 18, 0. 69 ±0. 29, 0.48 ±0. 29) U/rag had the lower T - AOC activity of brain tissue. The GSH-PX activity (42 ± 13, 106 ± 46, 197 ± 49, 173 ±42, 429 ±58) U/mg in the CO group decreased compared with the control group (182 ±53) U/mg and the HBO group (203 ±63, 325±86, 389 ±29, 385± 100, 453±32) U/rag. GR activity (4. 3 ±0. 7, 2. 6 ± 0. 5, 3.0 ±1.2, 1.8 ± 0. 8, 3.2 ±1.9) U/mg in the CO group decreased compared with the control group (14.5±3.0) U/mg and the HBO group (13.9 ±3.3, 4.3± 1.0, 3.9±0.7, 4.8±0.9, 4.6 ± 0.9) U/mg. CAT activity (1.6±0.8, 4.3±1.6, 3.9 ±1.0, 8.5 ±2.6, 5.4±1.7) U/mgin the CO group decreased compared with the control group(5.2 ± 1.3) U/rag and the HBO group (5.2 ±2. 2, 8.8 ± 2.8, 5. 3± 1.0, 9. 2 ± 2. 1, 14. 1 ±3.8 ) U/mg. Conclusions HBO can improve the behavior of rats after acute CO poisoning. The antiox
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