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© Research
Publication : Journal of neurochemistry

Brain endothelial barrier passage by monocytes is controlled by the endothelin system

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of neurochemistry - 12 Aug 2011

Reijerkerk A, Lakeman KA, Drexhage JA, van Het Hof B, van Wijck Y, van der Pol SM, Kooij G, Geerts D, de Vries HE

Link to Pubmed [PMID] – 21777246

J. Neurochem. 2012 Jun;121(5):730-7

Homeostasis of the brain is dependent on the blood-brain barrier (BBB). This barrier tightly regulates the exchange of essential nutrients and limits the free flow of immune cells into the CNS. Perturbations of BBB function and the loss of its immune quiescence are hallmarks of a variety of brain diseases, including multiple sclerosis (MS), vascular dementia, and stroke. In particular, diapedesis of monocytes and subsequent trafficking of monocyte-derived macrophages into the brain are key mediators of demyelination and axonal damage in MS. Endothelin-1 (ET-1) is considered as a potent pro-inflammatory peptide and has been implicated in the development of cardiovascular diseases. Here, we studied the role of different components of the endothelin system, i.e., ET-1, its type B receptor (ET(B)) and endothelin-converting enzyme-1 (ECE-1) in monocyte diapedesis of a human brain endothelial cell barrier. Our pharmacological inhibitory and specific gene knockdown studies point to a regulatory function of these proteins in transendothelial passage of monocytes. Results from this study suggest that the endothelin system is a putative target within the brain for anti-inflammatory treatment in neurological diseases.

https://www.ncbi.nlm.nih.gov/pubmed/21777246