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Abstract Title:

Intra-cerebral cannabidiol infusion-induced neuroprotection is partly associated with the TNF-α/TNFR1/NF-кB pathway in transient focal cerebral ischaemia.

Abstract Source:

Brain Inj. 2017 Sep 5:1-12. Epub 2017 Sep 5. PMID: 28872345

Abstract Author(s):

Sepideh Khaksar, Mohammad Reza Bigdeli

Article Affiliation:

Sepideh Khaksar

Abstract:

BACKGROUND: Stroke is a neurological disease, which, in addition to high mortality, imposes many financial and mental burdens on families and the society. The main objective of this study was to investigate the effect of cannabidiol (CBD) on one of the major inflammatory pathways in cerebral ischaemia.

METHOD: Using stereotaxic surgery, the cannula was implanted into the right lateral ventricle of rats. CBD (50, 100, and 200 ng/rat; i.c.v.) was administrated for five consecutive days. After pretreatment, the rats were subjected to 60 min of right middle cerebral artery occlusion (MCAO). After 24 h, neurological deficits score, infarct volume, brain oedema, and blood-brain barrier (BBB) permeability in total, core, and penumbra areas were assessed. The expression of tumour necrosis factor alfa (TNF-α), tumour necrosis factor receptor 1 (TNFR1), and nuclear factor-kappa B (NF-кB) in the mentioned regions was also studied.

RESULTS: Administration of CBD (100 and 200 ng/rat) caused a significant reduction in infarction, brain oedema, and BBB permeability compared with the vehicle-received group. Down-regulation of TNF-α, TNFR1, and NF-кB expression was also observed by CBD.

CONCLUSION: The results achieved in this study support the idea that CBD has a cerebroprotective effect (partly through suppression of TNF-α, TNFR1, and NF-кB) on ischaemic injury.

ABBREVIATIONS: CBD, cannabidiol; ANOVA, analysis of variance; PVDF, polyvinylidene difluoride; SDS-PAGE, sodium dodecyl sulphate polyacrylamide gel electrophoresis; SEM, standard error of mean.

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