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The blood–brain barrier (BBB) is a highly selective semipermeable border of endothelial cells that regulates the transfer of solutes and chemicals between the circulatory system and the central nervous system, thus protecting the brain from harmful or unwanted substances in the blood. [1]
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Lewandowsky coined the term blood–brain barrier in 1900, referring to the hypothesized semipermeable membrane which separated the human central nervous system from the rest of the body's vasculature, and which prevented the entry of certain compounds from entering the brain when injected into the bloodstream. [4]
Pericytes play a crucial role in the formation and functionality of the blood–brain barrier. This barrier is composed of endothelial cells and ensures the protection and functionality of the brain and central nervous system. It has been found that pericytes are crucial to the postnatal formation of this barrier.
Edwin Goldmann (12 November 1862 – 12 August 1913) was a biomedical researcher and surgeon most famous for his contributions in first characterizing the blood–brain barrier. [ 1 ] Discovery of the blood–brain barrier
Within the brain, the glial limiting membrane is an important constituent of the blood–brain barrier. Experiments using electron-dense markers have discovered that functional components of the blood–brain barrier are the endothelial cells that compose the vessel itself.
The blood–cerebrospinal fluid barrier (BCSFB) is a fluid–brain barrier that is composed of a pair of membranes that separate blood from CSF at the capillary level and CSF from brain tissue. [14] The blood–CSF boundary at the choroid plexus is a membrane composed of epithelial cells and tight junctions that link them. [14] There is a CSF ...
Blood–brain barrier: The astrocyte endfeet processes encircling endothelial cells were thought to aid in the maintenance of the blood–brain barrier, and recent research indicates that they do play a substantial role, along with the tight junctions and basal lamina.