Abstract
Background: Neuroinflammation and oxidative stress after traumatic brain injury (TBI) can further lead to neuronal apoptosis, which plays a crucial role in the process of neuron death. Curcumin, which is derived from the rhizome of the Curcuma longa plant, has multiple pharmacological effects.
Objective: The objective of this study was to investigate whether curcumin treatment has neuroprotective effects after TBI, and to elucidate the underlying mechanism.
Methods: A total of 124 mice were randomly divided into 4 groups: Sham group, TBI group, TBI+Vehicle group, and TBI+Curcumin group. The TBI mice model used in this study was constructed with TBI device induced by compressed gas, and 50 mg/kg curcumin was injected intraperitoneally 15 minutes after TBI. Then, the blood-brain barrier permeability, cerebral edema, oxidative stress, inflammation, apoptosis-related protein, and behavioral tests of neurological function were utilized to evaluate the protective effect of curcumin after TBI.
Results: Curcumin treatment markedly alleviated post-trauma cerebral edema and blood-brain barrier integrity, and suppressed neuronal apoptosis, reduced mitochondrial injury and the expression of apoptosis-related proteins. Moreover, curcumin also attenuates TBI-induced inflammatory response and oxidative stress in brain tissue and improves cognitive dysfunction after TBI.
Conclusion: These data provide substantial evidence that curcumin has neuroprotective effects in animal TBI models, possibly through the inhibition of inflammatory response and oxidative stress.
Keywords: Traumatic brain injury, curcumin, inflammation, oxidative stress, neuroprotective effect, cognitive dysfunction.
[http://dx.doi.org/10.1016/j.biopsych.2021.09.024] [PMID: 34893317]
[http://dx.doi.org/10.1016/j.biopsych.2021.05.025] [PMID: 34364650]
[http://dx.doi.org/10.1016/B978-0-444-52892-6.00001-5] [PMID: 25702206]
[http://dx.doi.org/10.1002/biof.1566] [PMID: 31580521]
[http://dx.doi.org/10.1080/1028415X.2020.1760531] [PMID: 32441587]
[http://dx.doi.org/10.3389/fnins.2018.00657] [PMID: 30294256]
[http://dx.doi.org/10.1007/s11102-019-00957-9] [PMID: 30929221]
[http://dx.doi.org/10.1016/j.intimp.2020.107353] [PMID: 33429334]
[http://dx.doi.org/10.3390/antiox10010096] [PMID: 33445495]
[http://dx.doi.org/10.1007/s10753-020-01388-6] [PMID: 33411101]
[PMID: 33287596]
[http://dx.doi.org/10.4103/1673-5374.303035] [PMID: 33433486]
[PMID: 33044639]
[PMID: 33107268]
[http://dx.doi.org/10.2174/1570159X19666210712152532] [PMID: 34825873]
[http://dx.doi.org/10.1159/000517901] [PMID: 34496365]
[http://dx.doi.org/10.1002/ptr.7417] [PMID: 35302258]
[http://dx.doi.org/10.1016/j.taap.2018.03.020] [PMID: 29571711]
[http://dx.doi.org/10.3892/ijmm.2019.4094] [PMID: 30816425]
[http://dx.doi.org/10.1016/j.brainresbull.2020.02.002] [PMID: 32044361]
[http://dx.doi.org/10.1016/j.wneu.2021.05.012] [PMID: 33992827]
[http://dx.doi.org/10.4103/0366-6999.243558] [PMID: 30334530]
[http://dx.doi.org/10.1016/j.biochi.2018.10.021] [PMID: 30391287]
[http://dx.doi.org/10.1155/2020/8829328] [PMID: 33149813]
[http://dx.doi.org/10.1016/j.brainres.2017.09.029] [PMID: 29030054]
[http://dx.doi.org/10.1038/nprot.2009.148] [PMID: 19713954]
[http://dx.doi.org/10.1155/2020/3193725] [PMID: 33381547]
[http://dx.doi.org/10.1038/aps.2015.47] [PMID: 26119880]
[http://dx.doi.org/10.1002/brb3.921] [PMID: 29484272]
[http://dx.doi.org/10.1016/j.jss.2016.08.090] [PMID: 27979493]
[http://dx.doi.org/10.3390/ijms21249382] [PMID: 33317180]
[PMID: 33326114]
[http://dx.doi.org/10.1016/S1474-4422(22)00309-X] [PMID: 36183712]
[http://dx.doi.org/10.1016/S1474-4422(22)00307-6] [PMID: 35963251]
[http://dx.doi.org/10.3390/ijms21093344] [PMID: 32397302]
[http://dx.doi.org/10.1111/j.1742-4658.2008.06766.x] [PMID: 19087196]
[http://dx.doi.org/10.3389/fncel.2020.00211] [PMID: 32754016]
[http://dx.doi.org/10.1016/j.biopha.2022.113621] [PMID: 36055110]
[http://dx.doi.org/10.3390/biology8030051] [PMID: 31252572]
[http://dx.doi.org/10.1155/2020/4170156] [PMID: 32454938]
[http://dx.doi.org/10.1016/j.brainresbull.2020.05.009] [PMID: 32502596]
[http://dx.doi.org/10.1016/j.nbd.2012.03.018] [PMID: 22426396]
[http://dx.doi.org/10.1155/2018/4783602] [PMID: 30224944]
[http://dx.doi.org/10.1007/s11655-020-3183-7] [PMID: 31970676]
[http://dx.doi.org/10.1186/s12906-020-03175-0] [PMID: 33402180]
[http://dx.doi.org/10.1016/j.brainres.2010.11.061] [PMID: 21111721]
[http://dx.doi.org/10.1002/jnr.20400] [PMID: 15668909]
[http://dx.doi.org/10.1002/jcb.29210] [PMID: 31318092]
[http://dx.doi.org/10.1186/s12906-020-2865-1] [PMID: 32145743]
[http://dx.doi.org/10.1016/j.brainres.2020.147007] [PMID: 32645380]