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Protective effects of curcumin against traumatic brain injury

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BIOMEDICINE & PHARMACOTHERAPY
卷 154, 期 -, 页码 -

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ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.biopha.2022.113621

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Traumatic brain injury (TBI); Curcumin; Neurodegenerative diseases; Neuroinflammation

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This article reviews the mechanisms and effects of curcumin in traumatic brain injury (TBI). The findings reveal that curcumin exhibits protective effects on TBI through modulation of cell signaling pathways and immune regulation. However, further clinical experiments are needed to validate the precise mechanisms and function of curcumin in TBI.
Neuroinflammation is a key pathophysiological mechanism implicated in the neurodegenerative condition. One such condition implicating neuroinflammation is traumatic brain injury (TBI). Over the past decades, various alternative natural compounds, such as curcumin, have been investigated as novel therapeutic options to miti-gate the pathophysiological pathways and clinical sequelae involved in TBI. As the main component of turmeric (Curcuma longa), curcumin has a broad range of clinical properties due to its considerable antioxidative and anti-inflammatory actions. This review discusses the pleiotropic mechanisms, the side effects, curcumin's delivery to the central nervous system (CNS), and its immunomodulatory and protective effects on TBI. Clinical trials, in vivo, and in vitro studies were extracted from different scientific databases, including PubMed, Scopus, and Google Scholar, to assess the effects of curcumin or its derivatives in TBI. Findings reveal that curcumin exhibited some protective effects on TBI via modulation of cell signaling pathways including toll-like receptor-4 (TLR-4), nuclear factor kappa B (NF-KB), and Nod-like receptor family proteins (NLRPs). Moreover, curcumin upregulates the brain-derived Neurotrophic Factor/Tropomyosin receptor kinase B (BDNF/TrkB) signaling pathway, phosphatidylinositol-3-kinase/protein kinase B (PI3K/AKT), nuclear factor erythroid 2-related factor 2 (Nrf2), which have crucial functions in modulation of TBI pathophysiological-mediated pathways. Curcumin displays beneficial immunomodulatory functions and protective capacities in different TBI models, although more clinical experiments are required to clarify curcumin's precise mechanisms and function in TBI.

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