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Wang Q, Wang H, Wang J, Venugopal J, Kleiman K, Guo C, Sun Y, Eitzman DT. Angiotensin II-induced Hypertension is Reduced by Deficiency of P-selectin Glycoprotein Ligand-1. Sci Rep 2018; 8:3223. [PMID: 29459637 PMCID: PMC5818646 DOI: 10.1038/s41598-018-21588-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 02/07/2018] [Indexed: 12/31/2022] Open
Abstract
Identification of inflammatory mediators that regulate the vascular response to vasopressor molecules may aid in the development of novel therapeutic agents to treat or prevent hypertensive vascular diseases. Leukocytes have recently been shown to be capable of modifying blood pressure responses to vasopressor molecules. The purpose of this study was to test the hypothesis that deficiency of the leukocyte ligand, Psgl-1, would reduce the pressor response to angiotensin II (Ang II). Mice deficient in Psgl-1 (Psgl-1−/−) along with wild-type (WT) controls were treated for 2 weeks with a continuous infusion of Ang II. No differences in blood pressure between the groups were noted at baseline, however after 5 days of Ang II infusion, systolic blood pressures were higher in WT compared to Psgl-1−/− mice. The pressor response to acute administration of high dose Ang II was also attenuated in Psgl-1−/− compared to WT mice. Chimeric mice with hematopoietic deficiency of Psgl-1 similarly showed a reduced pressor response to Ang II. This effect was associated with reduced plasma interleukin-17 (IL-17) levels in Psgl-1−/− mice and the reduced pressor response was restored by administration of recombinant IL-17. In conclusion, hematopoietic deficiency of Psgl-1 attenuates Ang II-induced hypertension, an effect that may be mediated by reduced IL-17.
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Affiliation(s)
- Qian Wang
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, China
| | - Hui Wang
- Department of Internal Medicine, Cardiovascular Research Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Jintao Wang
- Department of Internal Medicine, Cardiovascular Research Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Jessica Venugopal
- Department of Internal Medicine, Cardiovascular Research Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Kyle Kleiman
- Department of Internal Medicine, Cardiovascular Research Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Chiao Guo
- Department of Internal Medicine, Cardiovascular Research Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Yingxian Sun
- Department of Cardiology, the First Hospital of China Medical University, Shenyang, China
| | - Daniel T Eitzman
- Department of Internal Medicine, Cardiovascular Research Center, University of Michigan, Ann Arbor, Michigan, USA.
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