论文部分内容阅读
目的 探讨水通道蛋白(Aquaporin,AQP)在帕金森病(Parkinson’s disease,PD)患者不同脑区的MRI表现及其意义.方法 前瞻性收集33例PD患者(PD组)的临床资料,并应用磁共振扩散加权成像(MR-DWI)多b值水通道蛋白分子成像技术测量不同脑区水通道蛋白表观扩散系数(Aquaporin apparent diffusion coefficient,AQP-ADC)值;另外选取性别年龄相匹配的健康体检者23名作为对照组.应用Hoehn-Yahr改良分级对PD患者评级,然后比较轻度、中重度PD组与对照组不同脑区的AQP-ADC值,并对不同脑区的AQP-ADC值与Hoehn-Yahr分级进行相关性分析.结果 轻度PD患者红核、苍白球的AQP-ADC值明显高于对照组[分别为(0.24±0.04) vs (0.21±0.04),(0.21±0.04) vs (0.16±0.04);均P＜0.05],而中重度PD患者较轻度PD患者明显降低[分别为(0.21±0.02) vs(0.24±0.04),(0.18±0.03) vs (0.21±0.04);均P＜0.05],中重度PD患者与对照组之间差异无统计学意义(P＞0.05);而黑质、壳核、丘脑的AQP-ADC值在各个组之间均差异无统计学意义(P＞0.05).相关分析显示PD组红核、苍白球AQP-ADC值与Hoehn-Yahr分级成显著负相关(r=-0.479和-0.395,P＜0.05),而黑质、壳核、丘脑的AQP-ADC值与Hoehn-Yahr分级无明显相关性(P＞0.05).结论 AQP-ADC值在轻度PD患者红核、苍白球部位增高,且在中重度PD患者中降低;而在黑质、壳核、丘脑部位却未见明显变化,提示AQP在不同脑区的表达变化可能与PD的病情和病理分期有关.“,”Objective To investigate MRI appearances of aquaporin(AQP) and its effect in different brain regions of patients with Parkinson’s disease(PD).Methods A prospective study was carried out in 33 PD patients(PD group) and 23 gender-and age-matched healthy controls (control group).Clinical data of PD patients were collected.The aquaporin imaging of diffusion-weighted magnetic resonance imaging (MRDWI) with multiple b-values in different brain regions were performed to detect the apparent diffusion coefficient(AQP-ADC) values of aquaporin.The PD patients were assessed and graded by modified Hoehn-Yahr grading,then the AQP-ADC values of control group,mild PD group,moderate and severe PD group were analyzed using one-way analysis of variance.The correlation analysis was carried out to detect the relationship between AQP-ADC values in different brain regions and Hoehn-Yahr grading of PD patients.Results Compared with control group,mild PD group had significantly higher AQP-ADC values in red nucleus(RN) and globus pallidus(GP) ((0.24±0.04) vs (0.21±0.04),(0.21±0.04) vs (0.16±0.04);both P＜0.05);while the AQP-ADC values in RN and GP of moderate and severe PD group were significantly lower than that of mild PD group((0.21±0.02) vs (0.24±0.04),(0.18±0.03) vs (0.21±0.04);both P＜0.05);but there was no significant difference between moderate and severe PD group and control group(P＞0.05);and there was also no significant difference in substantianigra (SN),putamen (Pu) and thalamus (THA) among control group,mild PD group and moderate and severe PD group(P＞0.05).The correlation analysis showed that there were negative correlations between the AQP-ADC values in RN and GP and Hoehn-Yahr grading(r=-0.479 and-0.395,P＜ 0.05),while there was no correlation in SN,Pu and THA (P＞ 0.05).Conclusion The AQPADC values are increased in RN and GP of mild PD patients,and decreased in moderate and severe PD patients,while there is no significant change in SN,Pu and THA of the two groups,suggesting that the expression of AQP in different brain regions may be related to the severity and pathological stage of PD.