Abstract:
:The blood-brain barrier (BBB) impedes the influx of intravascular compounds from the blood to the brain. The elements composing the BBB are endothelial cells, pericytes and the end-feet of astrocytes. Among them, the endothelial cell barrier line is the most critical for preventing toxic substances from entering the brain. In this review, we focus on the ultrastructural distribution of important components in the intracellular junction and cytoplasm of brain endothelial cells. The ultrastructural distribution of tight junction-specific integral membrane proteins such as occludin, junctional adhesion molecules, claudin, peripheral zonula occludens protein-1 (ZO-1), adherens junction-specific transmembrane protein cadherin, and adherens junction-associated peripheral proteins alpha-catenin, beta-catenin, and p120 catenin is reviewed. P-glycoprotein and some other transporters recently discovered in endothelial cells prevent several compounds from entering the brain parenchyma. It is likely that the transient inhibition of P-glycoprotein by antidepressants enables other medicines to enter the brain. Vesicular transport with clathrin-mediated or adsorptive endocytosis through endothelial cells is also critical for transportation of blood-born substances from the bloodstream to the brain. How medicines pass the BBB to reach the brain parenchyma is discussed.
journal_name
Curr Med Chemjournal_title
Current medicinal chemistryauthors
Ueno Mdoi
10.2174/092986707780597943subject
Has Abstractpub_date
2007-01-01 00:00:00pages
1199-206issue
11eissn
0929-8673issn
1875-533Xjournal_volume
14pub_type
杂志文章,评审abstract:BACKGROUND:Numerous studies have demonstrated that halogenated agents elicit myocardial conditioning effects when adminis-tered perioperatively in cardiac surgery. Recent evidence has been published of the benefits of maintaining exposure to halogenated agents during the early postoperative period. The enzymatic mechan...
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更新日期:2005-01-01 00:00:00
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abstract:: ...
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更新日期:2012-01-01 00:00:00
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abstract:BACKGROUND:Post-translational modification (PTM) crosstalk is a young research field. However, there is now evidence of the extraordinary characterization of the different proteoforms and their interactions in a biological environment that PTM crosstalk studies can describe. Besides gene expression and phosphorylation ...
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更新日期:2019-01-01 00:00:00