孤独症患者小脑中有氧糖酵解酶的表达

摘要

Objective To study the expression levels of aerobic glycolytic enzymes in the cerebellums and its correlation with pathogenesis of autism in patients with autism. Methods The Western blotting was used to quantita-tively examine the expression levels of aerobic glycolytic enzymes, including HK-Ⅰ, HK-Ⅱ, PFKP, PKM1/2, PKM2, GAPDH, PDH and LDHA in the cerebellums of eight patients with autism and eight age-matched controls. Results Compared to controls, PDH expression was significantly decreased [(0.715±0.342) vs.(1.028±0.203), P=0.043], while expression of other seven aerobic glycolytic enzymes remained unchanged ( P>0 . 05 ) in the cerebellums of patients with autism. Conclusion The present study has revealed a decrease in the expression of PDH in the cerebellums of patients with autism, which may be involved in the pathologic process of autism.%目的 研究孤独症患者小脑中有氧糖酵解酶表达水平及其与孤独症发病的关系.方法 用Western Blotting方法定量检测8例孤独症患者和8名年龄相匹配的对照者尸脑小脑组织中有氧糖酵解酶己糖激酶Ⅰ型及Ⅱ型同工酶(hexokinase isozyme,HK-Ⅰ、HK-Ⅱ)、血小板型磷酸果糖激酶(platelet-type phosphofructokinase,PFKP)、 丙酮酸激酶M型同工酶(pyruvate kinase M isozyme,PKM1/2)、 丙酮酸激酶M2亚型同工酶(pyruvate kinase M2 isoform,PKM2)、甘油醛-3-磷酸脱氢酶(glyceraldehyde-3-phosphatedehydrogenase,GAPDH)、丙酮酸脱氢酶(pyruvate dehydrogenase,PDH)及乳酸脱氢酶A型同工酶(lactate dehydrogenase A isozyme,LDHA)的表达水平.结果 孤独症患者与对照相比,小脑中PDH表达减少[(0.715±0.342)vs.(1.028±0.203),P=0.043],其他7种有氧糖酵解酶的表达水平组间差异均无统计学意义(P>0.05).结论 孤独症患者小脑中有氧糖酵解途径PDH表达减少,可能参与孤独症的病理过程.