【摘要】 目的　观察兔脑出血后血肿周围组织能量代谢产物的变化规律。方法　健康大耳白家兔采用随机数字法分成 3组 :正常组 ,脑出血组 ,假手术组。其中脑出血、假手术组又分成 1、6、12、2 4、4 8、72h组。采用二次注血法制备兔自体血脑出血模型。分离血肿周围组织 ,测定脑水含量、能量代谢产物三磷酸腺苷 (ATP)和乳酸的含量以及磷酸果糖激酶活性变化。结果　脑出血 1h血肿侧即有脑水肿 ,至 72h逐渐加重 ,血肿侧明显重于对侧。 1h后血肿周围组织ATP含量呈中度下降 ,但差异无显著意义。 1～ 12h间ATP含量略有波动 ,12h后再次下降 ,至 2 4h达最低点 [(13 2 9± 2 92 )μg/ g ,降至正常的 5 8% ],差异有显著意义。 2 4h至 72h间无明显变化。乳酸含量于 1h即有增高 ,12h达高峰 [(2 1 0 1± 0 18) μmol/g],直至 72h乳酸水平 [(12 89± 0 2 5 ) μmol/g]仍明显高于正常组及假手术组。磷酸果糖激酶 (PFK)活性 1h即有下降 [(3 98± 0 0 2 )U/mg],72h内持续下降。与正常组及假手术组比较差异有显著意义。结论　脑出血后血肿周围组织在 2 4h后才发生明显的能量代谢衰竭 ,滞后于脑水肿的发生 ,其发生机制可能与相关酶的活性减低有关更多还原

【Abstract】 Objective To observe the changes of the content of ATP,lactate and the activity of phosphofructokinase(PFK) in perihemotoma region in rabbit brain after intracerebral hemorrhage. Methods(The rabbits) were divided into 3 groups: normal group(N),hemorrhage group (H) and the sham group(S). The H and S groups were subdivided into 1 h, 6 h, 12 h, 24 h, 48 h and 72 h groups. A model of cerebral hemorrhage in rabbit with autologous blood infusion was set. The contents of ATP, lactate and water in perihemotoma region were measured and the metabolite concentration in edematous brain regions were corrected for dilution. The activity of phosphofructokinase was also determined.Results There was obvious edema in perihemotoma region at 1 hour postinfusion and getting more serious at 72 hours. ATP was moderately decreased at 1 hour, and remained in a similar level until 12 hours. There appeared another evident decrease in 24 hours [(13.29±2.92) μg/g, about 58% of N group], and no obvious changes from 24 to 72 hours. The content of lactate increased in 1 hour and reached the peak at 12 hours [(21.01±0.18) μmol/g]. Until 72 hours , the level of lactate [(12.89±0.25) μmol/g] in hemorrhage group reach higher than in the normal and sham group. The activity of phosphofructokinase was decreased at 1 hour [(3.98±0.02) U/mg] and remained in a decreasing tendency to 72 hours. Conclusion The failure of energy metabolism occurs in 24 hours postinfusion,coming late somewhat to the brain edema. The result might be related to the changes of some enzymes, maybe a key role in energy metabolism.更多还原