医学研究生学报
醫學研究生學報
의학연구생학보
JOURNAL OF MEDICAL POSTGRADUATE
2015年
8期
794-798
,共5页
杨鹏%赵冬%刘祺%姬云翔%朱立仓%戴晶%许晖%唐仕军%朱文学%李晓天%王业忠
楊鵬%趙鼕%劉祺%姬雲翔%硃立倉%戴晶%許暉%唐仕軍%硃文學%李曉天%王業忠
양붕%조동%류기%희운상%주립창%대정%허휘%당사군%주문학%리효천%왕업충
蛛网膜下腔出血%早期脑损伤%氨基胍%神经元特异性烯醇化酶%凋亡
蛛網膜下腔齣血%早期腦損傷%氨基胍%神經元特異性烯醇化酶%凋亡
주망막하강출혈%조기뇌손상%안기고%신경원특이성희순화매%조망
Subarachnoid hemorrhage%Early brain injury%Aminoguanidine%Neurons-pecific enolase%Apoptosis
目的:近期研究表明早期脑损伤是蛛网膜下腔出血患者死亡的首要原因,文中初步探讨氨基胍( aminoguani-dine, AG)在蛛网膜下腔出血后早期脑损伤中起的作用。方法雄性SD大鼠68只,按照随机数字法分为4组:对照组(仅钻孔)、假手术组、蛛网膜下腔出血组、氨基胍组(分别钻孔并注入等渗盐水、股动脉血、股动脉血+AG),每组17只。视交叉前池注血法建立24 h大鼠蛛网膜下腔出血模型,HE染色鉴定模型。进行神经行为学评分(Garcia法),TUNEL法测神经元凋亡情况,Western blot检测诱导型一氧化氮合酶( inducible nitric oxide synthase , iNOS)蛋白、神经元特异性烯醇化酶( neuron-spe-cific enolase,NSE)蛋白的表达。结果 HE染色结果显示蛛网膜下腔有较多红细胞存在。神经行为学评分显示蛛网膜下腔出血组分值[(14.47±0.62)分]较对照组[(17.94±0.24)分]、假手术组[(17.59±0.51)分]、氨基胍组[(15.71±0.47)分]显著降低(P<0.05)。TUNEL结果显示蛛网膜下腔出血组阳性细胞率[(42.38±2.38)%]较对照组[(6.35±0.94)%]、假手术组[(6.85±0.69)%]、氨基胍组[(30.48±2.89)%]显著升高(P<0.01);氨基胍组、对照组、假手术组阳性细胞率差异有统计学意义(P<0.05)。蛛网膜下腔出血组iNOS、NSE 相对表达[(3.86±0.07)、(1.59±0.06)]较假手术组[(2.96±0.34)、(0.38±0.08)]、氨基胍组[(3.41±0.04)、(0.70±0.12)]、对照组[0,(0.35±0.09)]均显著升高(P<0.05)。各组iNOS、NSE蛋白表达量与TUNEL染色阳性细胞率均呈正相关(r=0.879、0.935,P<0.01)。结论在蛛网膜下腔出血后早期脑损伤中,AG可改善SD大鼠神经行为学功能,抑制神经元凋亡并下调iNOS、NSE的表达,具有减轻早期脑损伤的作用。
目的:近期研究錶明早期腦損傷是蛛網膜下腔齣血患者死亡的首要原因,文中初步探討氨基胍( aminoguani-dine, AG)在蛛網膜下腔齣血後早期腦損傷中起的作用。方法雄性SD大鼠68隻,按照隨機數字法分為4組:對照組(僅鑽孔)、假手術組、蛛網膜下腔齣血組、氨基胍組(分彆鑽孔併註入等滲鹽水、股動脈血、股動脈血+AG),每組17隻。視交扠前池註血法建立24 h大鼠蛛網膜下腔齣血模型,HE染色鑒定模型。進行神經行為學評分(Garcia法),TUNEL法測神經元凋亡情況,Western blot檢測誘導型一氧化氮閤酶( inducible nitric oxide synthase , iNOS)蛋白、神經元特異性烯醇化酶( neuron-spe-cific enolase,NSE)蛋白的錶達。結果 HE染色結果顯示蛛網膜下腔有較多紅細胞存在。神經行為學評分顯示蛛網膜下腔齣血組分值[(14.47±0.62)分]較對照組[(17.94±0.24)分]、假手術組[(17.59±0.51)分]、氨基胍組[(15.71±0.47)分]顯著降低(P<0.05)。TUNEL結果顯示蛛網膜下腔齣血組暘性細胞率[(42.38±2.38)%]較對照組[(6.35±0.94)%]、假手術組[(6.85±0.69)%]、氨基胍組[(30.48±2.89)%]顯著升高(P<0.01);氨基胍組、對照組、假手術組暘性細胞率差異有統計學意義(P<0.05)。蛛網膜下腔齣血組iNOS、NSE 相對錶達[(3.86±0.07)、(1.59±0.06)]較假手術組[(2.96±0.34)、(0.38±0.08)]、氨基胍組[(3.41±0.04)、(0.70±0.12)]、對照組[0,(0.35±0.09)]均顯著升高(P<0.05)。各組iNOS、NSE蛋白錶達量與TUNEL染色暘性細胞率均呈正相關(r=0.879、0.935,P<0.01)。結論在蛛網膜下腔齣血後早期腦損傷中,AG可改善SD大鼠神經行為學功能,抑製神經元凋亡併下調iNOS、NSE的錶達,具有減輕早期腦損傷的作用。
목적:근기연구표명조기뇌손상시주망막하강출혈환자사망적수요원인,문중초보탐토안기고( aminoguani-dine, AG)재주망막하강출혈후조기뇌손상중기적작용。방법웅성SD대서68지,안조수궤수자법분위4조:대조조(부찬공)、가수술조、주망막하강출혈조、안기고조(분별찬공병주입등삼염수、고동맥혈、고동맥혈+AG),매조17지。시교차전지주혈법건립24 h대서주망막하강출혈모형,HE염색감정모형。진행신경행위학평분(Garcia법),TUNEL법측신경원조망정황,Western blot검측유도형일양화담합매( inducible nitric oxide synthase , iNOS)단백、신경원특이성희순화매( neuron-spe-cific enolase,NSE)단백적표체。결과 HE염색결과현시주망막하강유교다홍세포존재。신경행위학평분현시주망막하강출혈조분치[(14.47±0.62)분]교대조조[(17.94±0.24)분]、가수술조[(17.59±0.51)분]、안기고조[(15.71±0.47)분]현저강저(P<0.05)。TUNEL결과현시주망막하강출혈조양성세포솔[(42.38±2.38)%]교대조조[(6.35±0.94)%]、가수술조[(6.85±0.69)%]、안기고조[(30.48±2.89)%]현저승고(P<0.01);안기고조、대조조、가수술조양성세포솔차이유통계학의의(P<0.05)。주망막하강출혈조iNOS、NSE 상대표체[(3.86±0.07)、(1.59±0.06)]교가수술조[(2.96±0.34)、(0.38±0.08)]、안기고조[(3.41±0.04)、(0.70±0.12)]、대조조[0,(0.35±0.09)]균현저승고(P<0.05)。각조iNOS、NSE단백표체량여TUNEL염색양성세포솔균정정상관(r=0.879、0.935,P<0.01)。결론재주망막하강출혈후조기뇌손상중,AG가개선SD대서신경행위학공능,억제신경원조망병하조iNOS、NSE적표체,구유감경조기뇌손상적작용。
Objective Recent studies have indicated that early brain injury is the leading cause of death in patients with subarachnoid hemorrhage ( SAH) .Our study investigated the role of aminoguanidine ( AG) in early brain injury after SAH . Methods Sixty-eight male SD rats were equally randomized into four groups of equal number :control, sham, SAH, and AG.The animals in the sham group were injected with isotonic saline solution , while those of the latter two groups with femoral artery blood ( FAB) and FAB+AG, respectively, into the pre-chiasmatic cistern to induce SAH. At 24 hours after modeling , all the rats were killed for HE staining , obtainment of behavioral neurological assessment ( BNA ) scores by Garcia, measurement of the apoptosis of neurons by TUNEL , and de-termination of the expressions of the iNOS and NSE proteins by West-ern blot. Results The results of HE staining showed the presence of more red blood cells in the subarachnoid cavity of the rats in the SAH group, with a significantly decreased BNA score ( 14.47 ± 0.62) as compared with those in the control (17.94 ±0.24), sham (17.59 ±0.51), and AG group (15.71 ±0.47) (P<0.05). The rate of positive cells was remarkably higher in the SAH group ([42.38 ±2.38]%) than in the control ([6.35 ±0.94]%), sham ([6.85 ±0.69]%), and AG group ([30.48 ±2.89]%) ( P<0.01), with significant differences among the latter three groups (P<0.05).The expressions of iNOS and NSE were markedly higher in the SAH group ([3.86 ±0.07] and [1.59 ±0.06]) than in the control (0 and[0.35 ±0.09]), sham ([2.96 ±0.34] and [0.38 ±0.08]), and AG group ([3.41 ±0.04] and [0.70 ±0.12]) ( P<0.05).Both the expression levels of iNOS and NSE were positively correlated with the rate of positive cells (r=0 .879 and 0.935, P<0.01). Conclusion AG can alleviate early brain injury after SAH in SD rats by improving the neuro-ethologic function , suppressing the apoptosis of neurons , and reducing the expressions of iNOS and NSE .