4.1 Article

Psychobiotics improve propionic acid-induced neuroinflammation in juvenile rats, rodent model of autism

Journal

TRANSLATIONAL NEUROSCIENCE
Volume 13, Issue 1, Pages 292-300

Publisher

DE GRUYTER POLAND SP Z O O
DOI: 10.1515/tnsci-2022-0226

Keywords

bee pollen; probiotic; neurotoxic; autism; cytokines; psychobiotics

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Funding

  1. King Saud University, Riyadh, Saudi Arabia [RSP-2021/237]

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This study evaluated the protective and therapeutic potential of bee pollen and probiotics in brain intoxication caused by propionic acid in juvenile rats. The results demonstrated that the combination of bee pollen and probiotics was effective in alleviating the neurotoxic effects of propionic acid.
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 alpha, and interferon gamma (IFN-gamma) were investigated to evaluate the neuroinflammatory responses in brain tissues from different animal groups. The much higher IL-1 beta, IL-8, and IFN-gamma, as pro-inflammatory cytokines (P < 0.001), together with much lower IL-10, as anti-inflammatory cytokine (P < 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-1 beta, IL-8, IL-10, and IFN-gamma 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.

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