The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
Direct observation of substance P-induced internalization of neurokinin 1 (NK1) receptors at sites of inflammation.
Open accessAbstract
Substance P (SP) can cause plasma leakage at sites of inflammation by binding to neurokinin type 1 (NK1) receptors on the surface of endothelial cells. Internalization after ligand binding could reduce the number of NK1 receptors on the cell surface and thus participate in the desensitization and resensitization of the inflammatory response to SP. By using an antibody to the receptor, we directly observed SP-induced internalization of NK1 receptors into endosomes in endothelial cells of postcapillary venules in the rat tracheal mucosa. In the absence of SP, an average of 15 immunoreactive endosomes were present per endothelial cell. After an intravenous injection of SP, the number of immunoreactive endosomes peaked at 107 per cell at 3 min and gradually returned to the baseline by 120 min. In parallel experiments we observed that when cultured cells transfected with the NK1 receptor were exposed to rhodamine-SP and an antibody to an extracellular Flag epitope of the NK1 receptor, the SP was internalized with the receptor antibody. Both in the cultured cells and in the endothelial cells of intact animals, the prompt SP-induced internalization was accompanied by rapid, long-lasting desensitization to SP. These studies suggest that internalization of NK1 receptors by endothelial cells may be one of the mechanisms that limit the amount of plasma leakage at sites of inflammation.
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Self-citationEndothelial gaps and permeability of venules in rat tracheas exposed to inflammatory stimuli
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Metadata
- Authors
- Bowden, J. J., Garland, A. M., Baluk, P., Lefevre, P., Grady, E. F., Vigna, S. R., Bunnett, N. W., & McDonald, D. M.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1994-09-13
- Volume
- 91
- Issue
- 19
- Pages
- 8964-8968
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2012032810
- Cited by
- 254
- References
- 16
- FWCI
- 4.74
- Type
- journal article
- Language
- en
- Open access
- green
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- Bowden, J. J., Garland, A. M., Baluk, P., Lefevre, P., Grady, E. F., Vigna, S. R., Bunnett, N. W., & McDonald, D. M. (1994). Direct observation of substance P-induced internalization of neurokinin 1 (NK1) receptors at sites of inflammation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.91.19.8964
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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