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Downregulation of MicroRNA-34c-5p Facilitated Neuroinflammation in Drug-resistant Epilepsy.
Brain Research ( IF 2.9 ) Pub Date : 2020-09-17 , DOI: 10.1016/j.brainres.2020.147130
Meng Fu 1 , Jie Tao 2 , Dongdong Wang 1 , Zhiping Zhang 3 , Xiaoli Wang 3 , Yonghua Ji 4 , Zhiping Li 1
Affiliation  

Drug-resistant epilepsy patients has aberrant inflammatory mediator levels. However, the mechanism of which is remains unillustrated. Here the molecular mechanism underlying the neuroinflammatory process in patients with drug-resistant epilepsy were investigated. Bioinformatics analysis revealed that miR-34c-5p was significantly downregulated in patients with drug-resistant epilepsy, compared to control population. Then, luciferase reporter assays indicated that HMGB1, inflammation-related mediators, was the target gene of miR-34c-5p. The kainic acid-induced epileptic rats were established and divided into drug-sensitive epilepsy and drug-resistant epilepsy according to their seizure behavior and EEG after antiepileptic drug administration. Downregulation of miR-34c-5p, elevated expression of HMGB1 and IL-1β had been found in rats with drug-resistant epilepsy, compared to drug-sensitive epilepsy rats. Aggravated hippocampal neuron loss was demonstrated in rats with drug-resistant epilepsy. The results from epileptic rats were subsequently validated from children with drug-resistant epilepsy. Analysis manifested that miR-34c-5p was obviously decreased, while HMGB1 was increased on serum of children with drug-resistant epilepsy. Our study highlights that decreased miR-34c-5p in drug-resistant epilepsy exacerbates neuroinflammation, which aggravates hippocampal neuron loss in epileptogenesis. Thus, miR-34c-5p could be considered as a potential noninvasive biomarker and shed novel light on the development of an effective therapeutic strategy for children with drug-resistant epilepsy in the future.



中文翻译:

MicroRNA-34c-5p 的下调促进了耐药癫痫中的神经炎症。

耐药性癫痫患者的炎症介质水平异常。然而,其机制仍未说明。这里研究了耐药性癫痫患者神经炎症过程的分子机制。生物信息学分析显示,与对照人群相比,耐药性癫痫患者的 miR-34c-5p 显着下调。然后,荧光素酶报告基因检测表明炎症相关介质 HMGB1 是 miR-34c-5p 的靶基因。建立红藻氨酸致癫痫大鼠,根据抗癫痫药物给药后的癫痫发作行为和脑电图分为药物敏感癫痫和耐药癫痫。miR-34c-5p 的下调,与药物敏感癫痫大鼠相比,在耐药癫痫大鼠中发现 HMGB1 和 IL-1β 表达升高。在患有耐药性癫痫的大鼠中证实了加重的海马神经元丢失。随后从患有耐药性癫痫的儿童身上验证了癫痫大鼠的结果。分析表明,耐药性癫痫患儿血清中miR-34c-5p明显降低,HMGB1升高。我们的研究强调,耐药性癫痫中 miR-34c-5p 的降低会加剧神经炎症,从而加剧癫痫发生中的海马神经元丢失。因此,miR-34c-5p 可以被视为一种潜在的非侵入性生物标志物,并为未来开发针对耐药性癫痫儿童的有效治疗策略提供新的思路。与药物敏感的癫痫大鼠相比。在患有耐药性癫痫的大鼠中证实了加重的海马神经元丢失。随后从患有耐药性癫痫的儿童身上验证了癫痫大鼠的结果。分析表明,耐药性癫痫患儿血清中miR-34c-5p明显降低,HMGB1升高。我们的研究强调,耐药性癫痫中 miR-34c-5p 的降低会加剧神经炎症,从而加剧癫痫发生中的海马神经元丢失。因此,miR-34c-5p 可被视为一种潜在的非侵入性生物标志物,并为未来开发针对耐药性癫痫儿童的有效治疗策略提供新的思路。与药物敏感的癫痫大鼠相比。在患有耐药性癫痫的大鼠中证实了加重的海马神经元丢失。随后从患有耐药性癫痫的儿童身上验证了癫痫大鼠的结果。分析表明,耐药性癫痫患儿血清中miR-34c-5p明显降低,HMGB1升高。我们的研究强调,耐药性癫痫中 miR-34c-5p 的降低会加剧神经炎症,从而加剧癫痫发生中的海马神经元丢失。因此,miR-34c-5p 可以被视为一种潜在的非侵入性生物标志物,并为未来开发针对耐药性癫痫儿童的有效治疗策略提供新的思路。在患有耐药性癫痫的大鼠中证实了加重的海马神经元丢失。随后从患有耐药性癫痫的儿童身上验证了癫痫大鼠的结果。分析表明,耐药性癫痫患儿血清中miR-34c-5p明显降低,HMGB1升高。我们的研究强调,耐药性癫痫中 miR-34c-5p 的降低会加剧神经炎症,从而加剧癫痫发生中的海马神经元丢失。因此,miR-34c-5p 可被视为一种潜在的非侵入性生物标志物,并为未来开发针对耐药性癫痫儿童的有效治疗策略提供新的思路。在患有耐药性癫痫的大鼠中证实了加重的海马神经元丢失。随后从患有耐药性癫痫的儿童身上验证了癫痫大鼠的结果。分析表明,耐药性癫痫患儿血清中miR-34c-5p明显降低,HMGB1升高。我们的研究强调,耐药性癫痫中 miR-34c-5p 的降低会加剧神经炎症,从而加剧癫痫发生中的海马神经元丢失。因此,miR-34c-5p 可以被视为一种潜在的非侵入性生物标志物,并为未来开发针对耐药性癫痫儿童的有效治疗策略提供新的思路。分析表明,耐药性癫痫患儿血清中miR-34c-5p明显降低,HMGB1升高。我们的研究强调,耐药性癫痫中 miR-34c-5p 的降低会加剧神经炎症,从而加剧癫痫发生中的海马神经元丢失。因此,miR-34c-5p 可以被视为一种潜在的非侵入性生物标志物,并为未来开发针对耐药性癫痫儿童的有效治疗策略提供新的思路。分析表明,耐药性癫痫患儿血清中miR-34c-5p明显降低,HMGB1升高。我们的研究强调,耐药性癫痫中 miR-34c-5p 的降低会加剧神经炎症,从而加剧癫痫发生中的海马神经元丢失。因此,miR-34c-5p 可以被视为一种潜在的非侵入性生物标志物,并为未来开发针对耐药性癫痫儿童的有效治疗策略提供新的思路。

更新日期:2020-10-02
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