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Perillyl Alcohol Modulates Activation, Permeability and Integrity of Human Brain Endothelial Cells Induced by Plasmodium Falciparum

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Date 2023 Jul 5
PMID 37403869
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Abstract

Background: Cerebral malaria (CM) is a severe immunovasculopathy caused for Plasmodium falciparum infection, which is characterised by the sequestration of parasitised red blood cells (pRBCs) in brain microvessels. Previous studies have shown that some terpenes, such as perillyl alcohol (POH), exhibit a marked efficacy in preventing cerebrovascular inflammation, breakdown of the brain-blood barrier (BBB) and brain leucocyte accumulation in experimental CM models.

Objective: To analyse the effects of POH on the endothelium using human brain endothelial cell (HBEC) monolayers co-cultured with pRBCs.

Methodology: The loss of tight junction proteins (TJPs) and features of endothelial activation, such as ICAM-1 and VCAM-1 expression were evaluated by quantitative immunofluorescence. Microvesicle (MV) release by HBEC upon stimulation by P. falciparum was evaluated by flow cytometry. Finally, the capacity of POH to revert P. falciparum-induced HBEC monolayer permeability was examined by monitoring trans-endothelial electrical resistance (TEER).

Findings: POH significantly prevented pRBCs-induced endothelial adhesion molecule (ICAM-1, VCAM-1) upregulation and MV release by HBEC, improved their trans-endothelial resistance, and restored their distribution of TJPs such as VE-cadherin, Occludin, and JAM-A.

Conclusions: POH is a potent monoterpene that is efficient in preventing P. falciparum-pRBCs-induced changes in HBEC, namely their activation, increased permeability and alterations of integrity, all parameters of relevance to CM pathogenesis.

References
1.
Grau G, Craig A . Cerebral malaria pathogenesis: revisiting parasite and host contributions. Future Microbiol. 2012; 7(2):291-302. DOI: 10.2217/fmb.11.155. View

2.
Pais T, Penha-Goncalves C . Brain Endothelium: The "Innate Immunity Response Hypothesis" in Cerebral Malaria Pathogenesis. Front Immunol. 2019; 9:3100. PMC: 6361776. DOI: 10.3389/fimmu.2018.03100. View

3.
Grau G, Piguet P, Vassalli P, Lambert P . Tumor-necrosis factor and other cytokines in cerebral malaria: experimental and clinical data. Immunol Rev. 1989; 112:49-70. DOI: 10.1111/j.1600-065x.1989.tb00552.x. View

4.
McCloy R, Rogers S, Caldon C, Lorca T, Castro A, Burgess A . Partial inhibition of Cdk1 in G 2 phase overrides the SAC and decouples mitotic events. Cell Cycle. 2014; 13(9):1400-12. PMC: 4050138. DOI: 10.4161/cc.28401. View

5.
Carvalho L, Ferreira-da-Cruz M, Daniel-Ribeiro C, Pelajo-Machado M, Lenzi H . Germinal center architecture disturbance during Plasmodium berghei ANKA infection in CBA mice. Malar J. 2007; 6:59. PMC: 1890294. DOI: 10.1186/1475-2875-6-59. View