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Vitamin D3 Attenuates Blood-Brain Barrier Disruption due to TBI (in rats) – Feb 2021

Vitamin D3 Supplement Attenuates Blood-Brain Barrier Disruption and Cognitive Impairments in a Rat Model of Traumatic Brain Injury

Neuromolecular Med. 2021 Feb 22. doi: 10.1007/s12017-021-08649-z
Jie Yang 1, Kunpeng Wang 2, Tiemin Hu 3, Guang Wang 3, Weixing Wang 3, Jiwei Zhang 3

This study was designed to study the effects of vitamin D3 supplementation on the cognitive dysfunction and neurological function of traumatic brain injury (TBI) and the possible underlying mechanisms. To this purpose, different doses of vitamin D3 were intraperitoneally injection to TBI rats for one week before TBI surgery and three consecutive weeks after TBI. Brain edema evaluation was conducted on the third day and Evans blue staining for blood-brain barrier (BBB) permeability on the seventh day after TBI. Rat behavior was assessed by evaluation of neurological scores and morris water maze.
It was revealed that vitamin D levels increased in serum after the administration of vitamin D3 for one week. TBI led to neurological deficit, together with brain edema, BBB disruption and inflammation.
Vitamin D3 supplement ameliorated neurological deficit and cognitive impairments induced by TBI.
Vitamin D3 administration reduced brain edema and impairments of blood-brain barrier induced by TBI, as well as decreased inflammatory response in TBI rat brain.
Our results showed that vitamin D3 administration alleviated neurobehavioral deficits and improved brain edema after TBI. Vitamin D3 inhibited inflammatory cytokines and decreased BBB disruption in TBI rats. Vitamin D3 may be used for the treatment of TBI as a protective intervention.




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