1
|
Potje SR, Isbatan A, Tostes RC, Bendhack LM, Dull RO, Carvalho-de-Souza JL, Chignalia AZ. Glypican 1 and syndecan 1 differently regulate noradrenergic hypertension development: Focus on IP3R and calcium. Pharmacol Res 2021; 172:105813. [PMID: 34411733 PMCID: PMC10200078 DOI: 10.1016/j.phrs.2021.105813] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/02/2021] [Accepted: 08/11/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Vascular dysfunction is a checkpoint to the development of hypertension. Heparan sulfate proteoglycans (HSPG) participate in nitric oxide (NO) and calcium signaling, key regulators of vascular function. The relationship between HSPG-mediated NO and calcium signaling and vascular dysfunction has not been explored. Likewise, the role of HSPG on the control of systemic blood arterial pressure is unknown. Herein, we sought to determine if the HSPG syndecan 1 and glypican 1 control systemic blood pressure and the progression of hypertension. PURPOSE To determine the mechanisms whereby glypican 1 and syndecan 1 regulate vascular tone and contribute to the development of noradrenergic hypertension. EXPERIMENTAL APPROACH AND KEY RESULTS By assessing systemic arterial blood pressure we observed that syndecan 1 (Sdc1-/-) and glypican 1 (Gpc1-/-) knockout mice show a similar phenotype of decreased systolic blood pressure that is presented in a striking manner in the Gpc1-/- strain. Gpc1-/- mice are also uniquely protected from a norepinephrine hypertensive challenge failing to become hypertensive. This phenotype was associated with impaired calcium-dependent vasoconstriction and altered expression of calcium-sensitive proteins including SERCA and calmodulin. In addition, Gpc1-/- distinctively showed decreased IP3R activity and increased calcium storage in the endoplasmic reticulum. CONCLUSIONS AND IMPLICATIONS Glypican 1 is a trigger for the development of noradrenergic hypertension that acts via IP3R- and calcium-dependent signaling pathways. Glypican 1 may be a potential target for the development of new therapies for resistant hypertension or conditions where norepinephrine levels are increased.
Collapse
Affiliation(s)
- Simone R Potje
- Department of Anesthesiology, College of Medicine Tucson, University of Arizona, USA; Department of Anesthesiology, College of Medicine, University of Illinois at Chicago, USA; Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil; Department of Physics and Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Ayman Isbatan
- Department of Anesthesiology, College of Medicine, University of Illinois at Chicago, USA
| | - Rita C Tostes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Lusiane M Bendhack
- Department of Physics and Chemistry, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Randal O Dull
- Department of Anesthesiology, College of Medicine Tucson, University of Arizona, USA; Department of Physiology, College of Medicine Tucson, University of Arizona, USA; Department of Pathology, College of Medicine Tucson, University of Arizona, USA
| | - Joao L Carvalho-de-Souza
- Department of Anesthesiology, College of Medicine Tucson, University of Arizona, USA; Department of Physiology, College of Medicine Tucson, University of Arizona, USA
| | - Andreia Z Chignalia
- Department of Anesthesiology, College of Medicine Tucson, University of Arizona, USA; Department of Physiology, College of Medicine Tucson, University of Arizona, USA; Department of Pharmacology and Toxicology, College of Pharmacy Tucson, University of Arizona, USA.
| |
Collapse
|
2
|
Scott BNV, Sarkar T, Kratofil RM, Kubes P, Thanabalasuriar A. Unraveling the host's immune response to infection: Seeing is believing. J Leukoc Biol 2019; 106:323-335. [PMID: 30776153 PMCID: PMC6849780 DOI: 10.1002/jlb.4ri1218-503r] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/25/2019] [Accepted: 01/29/2019] [Indexed: 12/16/2022] Open
Abstract
It has long been appreciated that understanding the interactions between the host and the pathogens that make us sick is critical for the prevention and treatment of disease. As antibiotics become increasingly ineffective, targeting the host and specific bacterial evasion mechanisms are becoming novel therapeutic approaches. The technology used to understand host‐pathogen interactions has dramatically advanced over the last century. We have moved away from using simple in vitro assays focused on single‐cell events to technologies that allow us to observe complex multicellular interactions in real time in live animals. Specifically, intravital microscopy (IVM) has improved our understanding of infection, from viral to bacterial to parasitic, and how the host immune system responds to these infections. Yet, at the same time it has allowed us to appreciate just how complex these interactions are and that current experimental models still have a number of limitations. In this review, we will discuss the advances in vivo IVM has brought to the study of host‐pathogen interactions, focusing primarily on bacterial infections and innate immunity.
Collapse
Affiliation(s)
- Brittney N V Scott
- University of Calgary Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Tina Sarkar
- University of Calgary Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Rachel M Kratofil
- University of Calgary Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Paul Kubes
- University of Calgary Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Ajitha Thanabalasuriar
- University of Calgary Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Calvin, Phoebe, and Joan Snyder Institute for Chronic Diseases, University of Calgary, Calgary, Alberta, Canada.,Microbial Sciences, MedImmune/AstraZeneca LLC, Gaithersburg, Maryland, USA
| |
Collapse
|
3
|
Kowalewska PM, Nguyen UT, Burrows LL, Fox-Robichaud AE. Syndecan-1 (CD138) deficiency increases Staphylococcus aureus infection but has no effect on pathology in a mouse model of peritoneal dialysis. J Biomed Sci 2016; 23:20. [PMID: 26832929 PMCID: PMC4736699 DOI: 10.1186/s12929-016-0232-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 01/12/2016] [Indexed: 12/29/2022] Open
Abstract
Background Technique failure in peritoneal dialysis (PD) due to fibrosis and angiogenesis is complicated by peritonitis. Staphylococcus aureus infection is one of the most common causes of peritonitis in PD. The heparan sulfate proteoglycan, syndecan-1 (CD138), was reported to regulate fibrosis, angiogenesis, inflammation and S. aureus infection. The objectives of this study were to examine the effects of syndecan-1 on S. aureus infection and histopathology in a PD model. Results Syndecan-1-/- and wild type mice were dialyzed for 4 weeks and infected intraperitoneally with S. aureus. Tissues were collected after 4 h for histomorphometric analysis. Intravital microscopy was used to observe leukocyte recruitment and to quantify syndecan-1 in the parietal peritoneum microcirculation. The dialyzed syndecan-1-/- mice were more susceptible to S. aureus infection than undialyzed syndecan-1-/- controls and wild type animals. However, peritoneal fibrosis and neovascularization due to PD did not differ between syndecan-1-/- and wild type mice. Intravital microscopy showed that in S. aureus infection, syndecan-1 was removed from the subendothelial layer of peritoneal venules but syndecan-1 deficiency did not affect leukocyte recruitment. Conclusions This study indicates that, while syndecan-1 is important for providing a barrier to acute S. aureus infection in PD, it does not affect peritoneal fibrosis and angiogenesis.
Collapse
Affiliation(s)
- Paulina M Kowalewska
- Thrombosis and Atherosclerosis Research Institute and the Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Uyen T Nguyen
- Department of Biochemistry and Biomedical Sciences and the Michael G. DeGroote Institute for Infectious Diseases Research, McMaster University, Hamilton, ON, Canada
| | - Lori L Burrows
- Department of Biochemistry and Biomedical Sciences and the Michael G. DeGroote Institute for Infectious Diseases Research, McMaster University, Hamilton, ON, Canada
| | - Alison E Fox-Robichaud
- Thrombosis and Atherosclerosis Research Institute and the Department of Medicine, McMaster University, Hamilton, ON, Canada. .,David Braley Cardiac, Vascular and Stroke Research Institute, C5-106, 237 Barton Street East, Hamilton, ON, L8L 2X2, Canada.
| |
Collapse
|
4
|
Kowalewska PM, Margetts PJ, Fox-Robichaud AE. Peritoneal Dialysis Catheter Increases Leukocyte Recruitment in the Mouse Parietal Peritoneum Microcirculation and Causes Fibrosis. Perit Dial Int 2015; 36:7-15. [PMID: 26475840 DOI: 10.3747/pdi.2014.00211] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 02/16/2015] [Indexed: 11/15/2022] Open
Abstract
UNLABELLED ♦ BACKGROUND The objective of this study was to examine the effects of a conventional dialysis solution and peritoneal catheter on leukocyte-endothelial cell interactions in the microcirculation of the parietal peritoneum in a subacute peritoneal dialysis (PD) mouse model. ♦ METHODS An intraperitoneal (IP) catheter with a subcutaneous injection port was implanted into mice and, after a 2-week healing period, the animals were injected daily for 6 weeks with a 2.5% dextrose solution. Intravital microscopy (IVM) of the parietal peritoneum microcirculation was performed 4 hours after the last injection of the dialysis solution. Leukocyte-endothelial cell interactions were quantified and compared with catheterized controls without dialysis treatment and naïve mice. ♦ RESULTS The number of rolling and extravascular leukocytes along with peritoneal fibrosis and neovascularization were significantly increased in the catheterized animals compared with naïve mice but did not significantly differ between the 2 groups of catheterized animals with sham injections or dialysis solution treatment. ♦ CONCLUSION The peritoneal catheter implant increased leukocyte rolling and extravasation, peritoneal fibrosis and vascularization in the parietal peritoneum independently from the dialysis solution treatment.
Collapse
Affiliation(s)
| | - Peter J Margetts
- Division of Nephrology, St. Joseph's Hospital Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Alison E Fox-Robichaud
- Thrombosis and Atherosclerosis Research Institute and the Department of Medicine, McMaster University, Hamilton, ON, Canada
| |
Collapse
|