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Lactobacillus paracasei PS23 reduced early-life stress abnormalities in maternal separation mouse model

机译:乳杆菌帕拉沙氏菌PS23减少了母体分离小鼠模型中的早期胁迫异常

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摘要

Maternal separation (MS) has been developed as a model for inducing stress and depression in studies using rodents. The concept of the gut-brain axis suggests that gut health is essential for brain health. Here, we present the effects of administration of a probiotic, Lactobacillus paracasei PS23 (PS23), to MS mice against psychological traits including anxiety and depression. The administration of live and heat-killed PS23 cells showed positive behavioural effects on MS animals, where exploratory tendencies and mobility were increased in behavioural tests, indicating reduced anxiety and depression compared to the negative control mice (P0.05). Mice administered with both live and heat-killed PS23 cells also showed lower serum corticosterone levels accompanied by higher serum anti-inflammatory interleukin 10 (IL-10) levels, compared to MS separated mice (P0.05), indicating a stress-elicited response affiliated with increased immunomodulatory properties. Assessment of neurotransmitters in the brain hippocampal region revealed that PS23 affected the concentrations of dopaminergic metabolites differently than the control, suggesting that PS23 may have improved MS-induced stress levels via neurotransmitter pathways, such as dopamine or other mechanisms not addressed in the current study. Our study illustrates the potential of a probiotic in reversing abnormalities induced by early life stress and could be an alternative for brain health along the gut-brain axis.
机译:母体分离(MS)已被开发为使用啮齿动物诱导应力和抑郁症的模型。肠脑轴的概念表明肠系健康对脑健康至关重要。在这里,我们介绍了益生菌,乳杆菌乳菌Ps23(ps23)的疗法对小鼠抵抗心理特质,包括焦虑和抑郁症。活灭绝的PS23细胞的给药对MS动物的阳性行为作用显示,行为试验中的探索性趋势和迁移率增加,与阴性对照小鼠相比,表明减少焦虑和抑郁(P <0.05)。与MS分离的小鼠(P <0.05)相比,用活性和热杀死的PS23细胞施用的小鼠伴随着较高的血清抗炎白细胞介素10(IL-10)水平伴随着更高的血清抗炎白细胞介素10(IL-10)水平。隶属于免疫调节性质增加。脑海马区域中神经递质的评估表明,PS23影响了多巴胺能代谢物的浓度与对照不同,表明PS23可以通过神经递质途径改善MS引起的应力水平,例如在目前研究中未解决的多巴胺或其他机制。我们的研究说明了益生菌在早期寿命压力诱导的异常中潜在的潜力,并且可以是沿着肠轴轴的脑部健康的替代方案。

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