part of endothelial cell neural cell cerebral cortex endothelial cell A distinct endothelial cell forming the walls of the capillaries within the cerebral cortex. CALOHA:TS-2372 endothelial cells of cerebral cortex https://cellxgene.cziscience.com/cellguide/CL_1001602 cerebral cortex endothelial cells Cerebral cortex endothelial cells are unique endothelial cells responsible for the formation and regulation of the blood-brain barrier (BBB), a specialized structure that separates the circulating blood from the cerebral neural tissue. These cells line the inner surface of nearly all blood vessels that irrigate the cerebral cortex, the outermost layer of the brain involved with complex cognitive functions such as thought, perception, and memory formation. Cerebral cortex endothelial cells are integral to maintaining brain health and function due to their role in regulating brain microenvironment and controlling the passage of essential molecules and cells. The endothelial cells in the cerebral cortex are distinctive due to their highly selective permeability, largely attributable to the existence of unique tight junctions which maintain the barrier function of the BBB. The tightly interconnected structures of these cells prevent most substances from freely diffusing into the brain tissue, ensuring that harmful agents such as toxins, pathogens, or peripheral immune cells don't reach the brain and compromise its function. These cells also express multiple transporters and enzymes, allowing the selective entry of necessary nutrients and metabolites while excluding toxic substances. Cerebral cortex endothelial cells also participate in neurovascular coupling, a process where localized neuronal activity increases cerebral blood flow to satisfy the local metabolic demands. The endothelial cells work in coordination with neurons and other cell types such as astrocytes and pericytes to mediate this process. They have been thought to regulate local blood flow by releasing substances in response to neuronal activity. Additionally, these cells are involved in many pathological conditions. Breakdown or dysfunction of the BBB often marked by altered endothelial cell function is linked to numerous neurological disorders including stroke, multiple sclerosis, Alzheimer’s disease, and brain tumors. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) cerebral cortex brain endothelium