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| Content Provider | Springer Nature Link |
|---|---|
| Author | Inamura, Akiri Adachi, Yasuhiro Iue, Takao He, Yeting Tokuda, buko Nawata, Takashi Shirao, Satoshi mura, Sadahiro Fujii, Masami Ikeda, Eiji Owada, Yuji Suzuki, Michiyasu |
| Copyright Year | 2013 |
| Abstract | The blood–brain-barrier (BBB) is formed by different cell types, of which brain microvascular endothelial cells are major structural constituents. The goal of this study was to examine the effects of cooling on the permeability of the BBB with reference to tight junction formation of brain microendothelial cells. The sensorimotor cortex above the dura mater in adult male Wistar rats was focally cooled to a temperature of 5 °C for 1 h, then immunostaining for immunoglobulin G (IgG) was performed to evaluate the permeability of the BBB. Permeability produced by cooling was also evaluated in cultured murine brain endothelial cells (bEnd3) based on measurement of trans-epithelial electric resistance (TEER). Immunocytochemistry and Western blotting of proteins associated with tight junctions in bEnd3 were performed to determine protein distribution before and after cooling. After focal cooling of the rat brain cortex, diffuse immunostaining for IgG was observed primarily around the small vasculature and in the extracellular spaces of parenchyma of the cortex. In cultured bEnd3, TEER significantly decreased during cooling (15 °C) and recovered to normal levels after rewarming to 37 °C. Immunocytochemistry and Western blotting showed that claudin-5, a critical regulatory protein for tight junctions, was translocated from the membrane to the cytoplasm after cooling in cultured bEnd3 cells. These results suggest that focal brain cooling may open the BBB transiently through an effect on tight junctions of brain microendothelial cells, and that therapeutically this approach may allow control of BBB function and drug delivery through the BBB. |
| Starting Page | 1641 |
| Ending Page | 1647 |
| Page Count | 7 |
| File Format | |
| ISSN | 03643190 |
| Journal | Neurochemical Research |
| Volume Number | 38 |
| Issue Number | 8 |
| e-ISSN | 15736903 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2013-05-09 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Focal brain cooling Endothelial cells Tight junction Claudin-5 TEER (trans-epithelial electric resistance) Neurosciences Neurochemistry Biochemistry Cell Biology Neurology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Biochemistry Cellular and Molecular Neuroscience |
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