Alonazi Mona, Ben Bacha Abir, Al Suhaibani Anwar, Almnaizel Ahmad T, Aloudah Hisham S, El-Ansary Afaf
Biochemistry Department, Science College, King Saud University, Riyadh 11495, Saudi Arabia.
Biochemistry Department, Science College, King Saud University, P.O Box 22452, Riyadh 11495, Saudi Arabia.
Transl Neurosci. 2022 Sep 8;13(1):292-300. doi: 10.1515/tnsci-2022-0226. eCollection 2022 Jan 1.
This study aimed to evaluate the protective and therapeutic potency of bee pollen and probiotic mixture on brain intoxication caused by propionic acid (PPA) in juvenile rats. Five groups of six animals each, were used: the control group only receiving phosphate-buffered saline; the bee pollen and probiotic-treated group receiving a combination of an equal quantity of bee pollen and probiotic (0.2 kg/kg body weight); the PPA group being treated for 3 days with an oral neurotoxic dose of PPA (0.25 kg/kg body weight); the protective and therapeutic groups receiving bee pollen and probiotic mixture treatment right before and after the neurotoxic dose of PPA, respectively. The levels of interleukin (IL)-1ß, IL-6, IL-8, IL-10, IL-12, tumor necrosis factor α, and interferon γ (IFN-γ) were investigated to evaluate the neuroinflammatory responses in brain tissues from different animal groups. The much higher IL-1β, IL-8, and IFN-γ, as pro-inflammatory cytokines ( < 0.001), together with much lower IL-10, as anti-inflammatory cytokine ( < 0.001) compared to controls clearly demonstrated the neurotoxic effects of PPA. Interestingly, the mixture of bee pollen and probiotics was effective in alleviating PPA neurotoxic effects in both therapeutic and protective groups demonstrating highly significant changes in IL-1β, IL-8, IL-10, and IFN-γ levels together with non-significant reduction in IL-6 levels compared to PPA-treated rats. Overall, our findings demonstrated a new approach to the beneficial use of psychobiotics presenting as bee pollen and probiotic combination in neuroinflammation through cytokine changes as a possible role of glial cells in gut-brain axis.
本研究旨在评估蜂花粉和益生菌混合物对幼年大鼠丙酸(PPA)所致脑中毒的保护和治疗效力。使用了五组动物,每组六只:对照组仅接受磷酸盐缓冲盐水;蜂花粉和益生菌治疗组接受等量蜂花粉和益生菌的组合(0.2 kg/kg体重);PPA组用口服神经毒性剂量的PPA(0.25 kg/kg体重)治疗3天;保护组和治疗组分别在PPA神经毒性剂量之前和之后接受蜂花粉和益生菌混合物治疗。研究白细胞介素(IL)-1β、IL-6、IL-8、IL-10、IL-12、肿瘤坏死因子α和干扰素γ(IFN-γ)的水平,以评估不同动物组脑组织中的神经炎症反应。与对照组相比,作为促炎细胞因子的IL-1β、IL-8和IFN-γ水平显著更高(<0.001),而作为抗炎细胞因子的IL-10水平显著更低(<0.001),这清楚地证明了PPA的神经毒性作用。有趣的是,蜂花粉和益生菌的混合物在治疗组和保护组中均有效减轻了PPA的神经毒性作用,与PPA处理的大鼠相比,IL-1β、IL-8、IL-10和IFN-γ水平发生了高度显著变化,而IL-6水平无显著降低。总体而言,我们的研究结果表明了一种有益使用精神益生菌的新方法,即通过细胞因子变化,以蜂花粉和益生菌组合的形式在神经炎症中发挥作用,这可能是神经胶质细胞在肠-脑轴中的作用。