JOURNAL ARTICLE

Abrogating Doxorubicin-induced Chemobrain by Immunomodulators IFN-beta 1a or Infliximab: Insights to neuroimmune mechanistic hallmarks

Sara A Wahdan, Marwa O El-Derany, Amany E Abdel-Maged, Samar S Azab
Neurochemistry International 2020 May 29, : 104777
32479984
Chemobrain is a well-established clinical syndrome that impairs patient's daily function, in particular attentiveness, coordination and multi-tasking. Thus, it interferes with patient's quality of life. The putative pharmacological intervention against chemobrain relies on understanding the molecular mechanisms underlying it. This study aimed to examine the potential neuroprotective effects of two immunomodulators: Interferon-β-1a (IFN-β-1a), as well as Tumor necrosis function-alpha (TNF-α) inhibitor; Infliximab in doxorubicin (DOX)-induced chemobrain in rats. Besides, the current study targets investigating the possible molecular mechanisms in terms of neuromodulation and interference with different death routes controlling neural homeostasis. Herein, the two immunomodulators IFN-β-1a at a dose of 300,000 units; s.c.three times per week, or Infliximab at a dose of 5 mg/kg/week; i.p. once per week were examined against DOX (2 mg/kg/w, i.p.) once per week for 4 consecutive weeks in rats.The consequent behavioral tests and markers for cognitive impairment, oxidative stress, neuroinflammation, apoptosis and neurobiological abnormalities were further evaluated. Briefly, IFN-β-1a or Infliximab significantly protected against DOX-induced chemobrain. IFN-β-1a or Infliximab ameliorated DOX-induced hippocampal histopathological neurodegenerative changes, halted DOX-induced cognitive impairment, abrogated DOX-induced mitochondrial oxidative, inflammatory and apoptotic stress, mitigated DOX-induced autophagic dysfunction and finally upregulated the mitophagic machineries. In conclusion, these findings suggest that either IFN-β-1a or Infliximab offers neuroprotection against DOX-induced chemobrain which could be explained by their antioxidant, anti-inflammatory, pro-autophagic, pro-mitophagic and antiapoptotic effects. Future clinical studies are recommended to personalize either use of IFN-β-1a or infliximab to ameliorate DOX-induced chemobrain.

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