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A Bioactive Olive Pomace Extract Prevents the Death of Murine Cortical Neurons Triggered by NMDAR Over-Activation
Molecules ( IF 4.2 ) Pub Date : 2020-09-24 , DOI: 10.3390/molecules25194385
Franchi Alice , Pedrazzi Marco , Casazza Alessandro Alberto , Millo Enrico , Damonte Gianluca , Salis Annalisa , Liessi Nara , Onofri Franco , Marte Antonella , Casagrande Silvia , De Tullio Roberta , Perego Patrizia , Averna Monica

We have recently demonstrated that bioactive molecules, extracted by high pressure and temperature from olive pomace, counteract calcium-induced cell damage to different cell lines. Here, our aim was to study the effect of the same extract on murine cortical neurons, since the preservation of the intracellular Ca2+-homeostasis is essential for neuronal function and survival. Accordingly, we treated neurons with different stimuli in order to evoke cytotoxic glutamatergic activation. In these conditions, the high-pressure and temperature extract from olive pomace (HPTOPE) only abolished the effects of N-methyl-d-aspartate (NMDA). Particularly, we observed that HPTOPE was able to promote the neuron rescue from NMDA-induced cell death. Moreover, we demonstrated that HPTOPE is endowed with the ability to maintain the intracellular Ca2+-homeostasis following NMDA receptor overactivation, protecting neurons from Ca2+-induced adverse effects, including aberrant calpain proteolytic activity. Moreover, we highlight the importance of the extraction conditions used that, without producing toxic molecules, allow us to obtain protecting molecules belonging to proanthocyanidin derivatives like procyanidin B2. In conclusion, we can hypothesize that HPTOPE, due to its functional and nontoxic properties on neuronal primary culture, can be utilized for future therapeutic interventions for neurodegeneration.

中文翻译:

一种生物活性橄榄果渣提取物可防止由 NMDAR 过度激活引发的小鼠皮质神经元死亡

我们最近证明,通过高压和高温从橄榄果渣中提取的生物活性分子可以抵消钙诱导的细胞对不同细胞系的损伤。在这里,我们的目的是研究相同提取物对鼠皮层神经元的影响,因为细胞内 Ca2+ 稳态的保存对神经元功能和存活至关重要。因此,我们用不同的刺激处理神经元以激发细胞毒性谷氨酸能激活。在这些条件下,橄榄果渣 (HPTOPE) 的高压和高温提取物只会消除 N-甲基-d-天冬氨酸 (NMDA) 的影响。特别是,我们观察到 HPTOPE 能够促进神经元从 NMDA 诱导的细胞死亡中拯救出来。而且,我们证明 HPTOPE 具有在 NMDA 受体过度激活后维持细胞内 Ca2+ 稳态的能力,保护神经元免受 Ca2+ 诱导的不利影响,包括异常的钙蛋白酶蛋白水解活性。此外,我们强调所使用的提取条件的重要性,在不产生有毒分子的情况下,使我们能够获得属于原花色素衍生物(如原花青素 B2)的保护分子。总之,我们可以假设 HPTOPE 由于其对神经元原代培养的功能和无毒特性,可用于未来的神经变性治疗干预。我们强调所使用的提取条件的重要性,在不产生有毒分子的情况下,使我们能够获得属于原花青素衍生物(如原花青素 B2)的保护分子。总之,我们可以假设 HPTOPE 由于其对神经元原代培养的功能和无毒特性,可用于未来的神经变性治疗干预。我们强调所使用的提取条件的重要性,在不产生有毒分子的情况下,使我们能够获得属于原花青素衍生物(如原花青素 B2)的保护分子。总之,我们可以假设 HPTOPE 由于其对神经元原代培养的功能和无毒特性,可用于未来的神经变性治疗干预。
更新日期:2020-09-24
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