目的 通過研究深低溫期間高氧血?dú)夤芾韺ι畹蜏赝Qh(huán)(DHCA)兔血?dú)?、生化指?biāo)、腦組織中超氧 化物歧化酶(SOD)活性、丙二醛(MDA)含量、腦組織含水量的影響,探討高氧管理的腦保護(hù)作用。 方法 建立兔 DHCA +選擇性腦灌注(ASCP)動(dòng)物模型,將24 只11 ~ 13 周齡雄性新西蘭兔(體重2.7 ~ 3.4 kg)用隨機(jī)數(shù)字表法 分為3 組:假手術(shù)組(Sham 組),ASCP 組(S 組),ASCP +高氧管理組(SH 組),每組8 只。術(shù)中檢測動(dòng)脈血氧分 壓(PaO2)、動(dòng)脈血氧飽和度(SaO2)、頸靜脈球血氧分壓(PjvO2)、頸靜脈球血氧飽和度(SjvO2)和血乳酸(Lac)含量,術(shù) 后檢測腦組織SOD 活性、MDA 含量和腦組織含水量。 結(jié)果 停循環(huán)前、復(fù)灌前和復(fù)灌5 min SH 組PaO2、PjvO2 和 SjvO2 均高于S 組和Sham 組(P < 0.05)。SH 組腦組織SOD 活性與S 組[(213.53±33.52) U/mg.prot vs. (193.02 ±27.67) U/mg.prot] 和Sham 組[(213.53±33.52) U/mg.prot vs.(244.38±35.02)U/mg.prot] 比較差異 無統(tǒng)計(jì)學(xué)意義(P>0.05),但S組SOD活性低于Sham組(P<0.05)。SH組腦組織MDA含量低于S組[(1.42±0.30) nmol/mg.prot vs.(2.37±0.55) nmol/mg.prot,P < 0.05]。 結(jié)論 深低溫期間的高氧血?dú)夤芾碓贒HCA + ASCP 中能提供更好的氧供,有效地提高兔PjvO2 和SjvO2,維持腦組織SOD 活性,降低MDA 含量,具有腦保護(hù)作用。
引用本文: 王茜,楊九光,龍村等. 深低溫期間高氧血?dú)夤芾韺νQh(huán)兔腦組織的保護(hù)作用. 中國胸心血管外科臨床雜志, 2012, 19(1): 57-61. doi: 復(fù)制
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12. | Young C,Tenkova T, Dikranian k,et a1.Excitotoxic versus apoptotic mechanisms of neuronal cell death in perinatal hypoxia/ischemia.Curr Mol Med,2004, 4(2):77-85.. |
13. | Liu Y, Rosenthal RE, Haywood Y, et al.Normoxic ventilation after cardiac arrest reduces oxidation of brain lipids and improves neurological outcome. Stroke, 1998, 29(8):1679-1686. |
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- 1. Griepp RB. Cerebral protection during aortic arch surgery.J Thorac Cardiovasc Surg, 2001, 121(3):425-427.
- 2. Harrington DK, Fragomeni F, Bonser RS. Cerebral perfusion. Ann Thorac Surg, 2007,83(2):S799-S804.
- 3. 楊九光, 龍村, 姚忠喜, 等.經(jīng)右鎖骨下動(dòng)脈、右房插管兔體外循環(huán)及選擇性腦灌注模型的建立.中華實(shí)驗(yàn)外科雜志, 2000,17(1):77-78.
- 4. 楊九光, 龍村, 孫立忠, 等.全主動(dòng)脈弓置換術(shù)中的溫度管理.中國胸心血管外科臨床雜志, 2005,12(5):312-315.
- 5. 田良鑫, 孫立忠, 程衛(wèi)平, 等. 單側(cè)與雙側(cè)順行性腦灌注對認(rèn)知能力的影響. 中國胸心血管外科臨床雜志, 2005,12(1):8-10.
- 6. Joachimsson PO, Sjöberg F, Forsman M, et al.Adverse effects of hyperoxemia during cardiopulmonary bypass.J Thorac Cardiovasc Surg, 1996, 112(3):812-819.
- 7. Dexter F, Kern FH, Hindman BJ, et al.The brain uses mostly dissolved oxygen during profoundly hypothermic cardiopulmonary bypass. Ann Thorac Surg, 1997, 63(6):1725-1729.
- 8. Nollert G, Nagashima M, Bucerius J,et al.Oxygenation strategy and neurologic damage after deep hypothermic circulatory arrest. Ⅰ.Gaseous microemboli. J Thorac Cardiovasc Surg, 1999,117(6):1166-1171.
- 9. Leyvi G, Bello R, Wasnick JD, et al.Assessment of cerebral oxygen balance during deep hypothermic circulatory arrest by continuous jugular bulb venous saturation and near-infrared spectroscopy. J Cardiothorac Vasc Anesth, 2006, 20(6):826-833.
- 10. Cormio M, Valadka AB, Robertson CS.Elevated jugular venous oxygen saturation after severe head injury.J Neurosurg , 1999, 90(1):9-15..
- 11. Croughwell ND, Newman MF, Blumenthal JA, et al.Jugular bulb saturation and cognitive dysfunction after cardiopulmonary bypass. Ann Thorac Surg,1994, 58(6):1702-1708.
- 12. Young C,Tenkova T, Dikranian k,et a1.Excitotoxic versus apoptotic mechanisms of neuronal cell death in perinatal hypoxia/ischemia.Curr Mol Med,2004, 4(2):77-85..
- 13. Liu Y, Rosenthal RE, Haywood Y, et al.Normoxic ventilation after cardiac arrest reduces oxidation of brain lipids and improves neurological outcome. Stroke, 1998, 29(8):1679-1686.
- 14. Kilgannon JH, Jones AE, Shapiro NI, et al.Association between arterial hyperoxia following resuscitation from cardiac arrest and inhospital mortality. JAMA, 2010, 303(21):2165-2171.
- 15. McCord JM, Fridovich I.Superoxide dismutase. J Biol Chem, 1969, 244(22):6049-6055.
- 16. Lewén A, Matz P, Chan PH.Free radical pathways in CNS injury. J Neurotrauma, 2000, l7(10):871-890.
- 17. Kamada H, Yu F, Nito C, et al.Influence of hyperglycemia on oxidative stress and matrix metalloproteinase-9 activation after focal cerebral ischemia/reperfusion in rats:relation to blood-brain barrier dysfunction. Stroke, 2007,38(3):1044-1049.
- 18. Maier CM, Hsieh L, Crandall T, et al.Evaluating therapeutic targets for reperfusion-related brain hemorrhage. Ann Neurol, 2006, 59(6): 929-938.
- 19. Narasimhan P, Liu J, Song YS, et al.VEGF stimulates the ERK 1/2 signaling pathway and apoptosis in cerebral endothelial cells after ischemic conditions. Stroke, 2009, 40(4): 1467-1473.
- 20. 祝忠群, 朱德明, 蘇肇伉, 等.先天性心臟病兒體外循環(huán)的再氧合損傷.中國體外循環(huán)雜志, 2005,3(3):131-133.
- 21. Pearl JM, Thomas DW, Grist G, et al.Hyperoxia for management of acid-base status during deep hypothermia with circulatory arrest. Ann Thorac Surg, 2000,70(3):751-755.