The role of the Blood-Brain Barrier in cellular communication: A review

Adline Fernando 1, Ashraf Kadar Shahib 1, Ragini Raghu 1 and Mathangi Ganapathy 2, *

1 Industrial Biotechnology, Department for Biotechnology, Anna University, Chennai 600025, India.
2 Centre for Biotechnology, Anna University, Chennai 600025, India.
 
Review
World Journal of Biology Pharmacy and Health Sciences, 2023, 13(01), 362-381.
Article DOI: 10.30574/wjbphs.2023.13.1.0027
Publication history: 
Received on 02 December 2022; revised on 19 January 2023; accepted on 21 January 2023
 
Abstract: 
The blood-brain barrier regulates the flow of ions, chemicals, and cells by acting as a conduit between blood and cerebral tissue. Additionally, it shields the brain against pathogen invasion and immune cell infiltration. It is composed of endothelial cells, pericytes, astrocytic end feet, perivascular macrophages, and microglial cells, which help in maintaining its integrity. There are various signaling pathways that are also involved in maintaining its integrity. The Wnt/β catenin, FZD4/FZD7, Hedgehog and TGF-β signaling pathways were evident to produce components or factors which stabilise the BBB. However, the NF-B and ERK signaling pathways caused the creation of MMPs, which increased the BBB's permeability. These functions are altered in pathological conditions like Alzheimer’s disease, and Parkinson’s disease which are also mentioned.
 
Keywords: 
Blood-brain Barrier; Signaling Pathways; Wnt; FDZ4/7; Hedgehog; TGF-β; ERK; NF-кB; Alzheimer’s Disease; Parkinson’s Disease; Neurodegeneration
 
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