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BRAIN:切除手术可防止颞叶癫痫的进行性皮质变薄

2020-12-31 MedSci原创 MedSci原创

成人的局灶性癫痫与皮质的进行性萎缩有关,其速度是正常衰老的两倍以上。本研究的目标是确定成功的癫痫手术是否会阻断进行性皮质变薄。

成人的局灶性癫痫与皮质的进行性萎缩有关,其速度是正常衰老的两倍以上。本研究的目标是确定成功的癫痫手术是否会阻断进行性皮质变薄。在这项纵向病例对照神经影像研究中,研究人员纳入了前颞叶切除术前(n = 29)或之后(n = 56)单侧颞叶癫痫(TLE)的受试者和年龄和性别可比的健康志愿者(n = 124) 。研究人员在所有参与者的配对结构MRI扫描中测量了皮层厚度,并使用线性混合效应模型比较了各组之间的逐渐变薄情况。与健康受试者中与衰老相关的皮质变薄相比,在TLE手术前的逐点分析中发现了进行性皮质萎缩,该病变是双侧的,并且位于同侧颞叶之外。在这些区域,我们观察到TLE手术前病例左侧(左侧TLE 0.0192±0.0014与健康志愿者0.0032±0.0013 mm /年,P <0.0001)和右侧(右侧TLE 0.0198±0.0016与健康志愿者0.0037±0.0016 mm /年,P <0.0001)加速变薄。左前颞叶(0.0074±0.0016 mm /年,P = 0.0006)或右侧(0.0052±0.0020 mm /年,P = 0.0006)手术切除后,这些区域的皮质变薄程度降低。在顶点分析上直接比较术后TLE组和术前TLE组,术后减薄的区域在两个半球,特别是但不仅限于在术前受影响的区域。术后完全没有癫痫发作的参与者没有比正常衰老过程中观察到的进行性变薄更多。术后癫痫发作的患者术后小面积持续加速变薄。因此,成功的癫痫手术可预防在TLE中观察到的进行性皮质萎缩,并且可能具有神经保护作用。这一效应在颞叶切除后仍无癫痫发作的人中更为明显,使萎缩速度恢复到正常衰老的水平。这些结果为癫痫手术预防进一步的脑损伤提供了证据,并为在难治性TLE中提供早期手术提供了诱因。

原文出处:

Marian Galovic, Jane de Tisi, Andrew W McEvoy, Resective surgery prevents progressive cortical thinning in temporal lobe epilepsy.

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