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Shmeleva EV, Colucci F. Maternal natural killer cells at the intersection between reproduction and mucosal immunity. Mucosal Immunol 2021; 14:991-1005. [PMID: 33903735 PMCID: PMC8071844 DOI: 10.1038/s41385-020-00374-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/24/2020] [Accepted: 12/02/2020] [Indexed: 02/07/2023]
Abstract
Many maternal immune cells populate the decidua, which is the mucosal lining of the uterus transformed during pregnancy. Here, abundant natural killer (NK) cells and macrophages help the uterine vasculature adapt to fetal demands for gas and nutrients, thereby supporting fetal growth. Fetal trophoblast cells budding off the forming placenta and invading deep into maternal tissues come into contact with these and other immune cells. Besides their homeostatic functions, decidual NK cells can respond to pathogens during infection, but in doing so, they may become conflicted between destroying the invader and sustaining fetoplacental growth. We review how maternal NK cells balance their double duty both in the local microenvironment of the uterus and systemically, during toxoplasmosis, influenza, cytomegalovirus, malaria and other infections that threat pregnancy. We also discuss recent developments in the understanding of NK-cell responses to SARS-Cov-2 infection and the possible dangers of COVID-19 during pregnancy.
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Affiliation(s)
- Evgeniya V Shmeleva
- Department of Obstetrics & Gynaecology, University of Cambridge, National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge, CB2 0SW, UK
- Centre for Trophoblast Research, University of Cambridge, Cambridge, UK
| | - Francesco Colucci
- Department of Obstetrics & Gynaecology, University of Cambridge, National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge, CB2 0SW, UK.
- Centre for Trophoblast Research, University of Cambridge, Cambridge, UK.
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Role of Inflammatory Mediators in Endothelial Dysfunction of Umbilical Cord Vessels in Pregnant Women after Third-Trimester Nonprimary Cytomegaloviral Infection. ACTA BIOMEDICA SCIENTIFICA 2021. [DOI: 10.29413/abs.2021-6.2.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Background. Endothelial cells are the site of productive replication, hematogenous spread and persistence for a variety of viruses, including cytomegalovirus, which play a critical role in the development of vascular complications associated with cytomegalovirus infection due to developing endothelial dysfunction.Aim: to reveal the role of inflammatory mediators (tumor necrosis factor alpha, interleukin-1β, interleukin-8) in the formation of umbilical cord vascular endothelial dysfunction in reactivation of latent cytomegalovirus infection in the third trimester of pregnancy.Material and methods. The standard method of solid-phase (“sandwich” variant) enzyme immunoassay was carried out to study pro-inflammatory cytokines (tumor necrosis factor alpha, interleukin-1β, -8), endothelin-1, nitrite anion in the blood of the umbilical cord of newborns from mothers who come through reactivation of latent cytomegalovirus infection in the third trimester of pregnancy. The work includes examination data of 78 newborns born at 38–40 weeks of gestation. Among them: 45 newborns were born by CMV-seropositive women with reactivation of latent cytomegalovirus infection in the third trimester of pregnancy (main group) and 33 – by CMV-seronegative women (control group). Umbilical vein blood serum was chosen as the material for the study.Results. In the blood of the umbilical vein of newborns from mothers with reactivation of latent cytomegalovirus infection in the third trimester of pregnancy, a high level of pro-inflammatory cytokines was detected: tumor necrosis factor alpha, interleukin-1β, interleukin-8 (p < 0.001) with a simultaneous increase in the content of endothelin-1 and nitrite anion (p < 0.001), compared with similar indicators for healthy newborns.Conclusion. Reactivation of latent cytomegalovirus infection in the third trimester of pregnancy is associated with the formation of a systemic fetal inflammatory response determined by a high concentration of inflammatory mediators (tumor necrosis factor alpha, interleukin-1β, interleukin-8) and an increase in vasoactive compounds (endothelin-1 and nitrite-anion) leading to the formation of dysfunction of the vascular endothelium of the umbilical cord.
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Kerage D, Gombos RB, Wang S, Brown M, Hemmings DG. Sphingosine 1-phosphate-induced nitric oxide production simultaneously controls endothelial barrier function and vascular tone in resistance arteries. Vascul Pharmacol 2021; 140:106874. [PMID: 34004349 DOI: 10.1016/j.vph.2021.106874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 05/10/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022]
Abstract
The regulations of endothelial permeability and vascular tone by sphingosine 1-phosphate (S1P) have been well-studied independently. Little is known about whether the effects of S1P on endothelial permeability can directly influence vascular tone in resistance arteries, which impact blood flow. The endothelium forms a partial barrier that regulates access of circulating agonists to underlying vascular smooth muscle cells (VSMCs). We hypothesized that physiological concentrations of circulating S1P simultaneously control endothelial barrier function and vascular tone through endothelial production of nitric oxide (NO). We adapted the pressure myograph system to simultaneously measure both functions in pressurized mesenteric compared to uterine resistance arteries from wild-type and eNOS KO mice. We established that: 1) S1P interacting directly with the endothelium inside pressurized arteries generates NO that limits endothelial permeability; 2) an intact endothelium forms a partial physical barrier that regulates access of intraluminal S1P to the underlying VSMCs and 3) S1P infused lumenally also generates NO through eNOS that counterbalances the constriction induced by S1P that is able to access VSMCs and this is critical to control vascular tone. We conclude that targeting the S1P signaling system, particularly the capacity to produce NO could be clinically important in the treatment of vascular diseases.
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Affiliation(s)
- Daniel Kerage
- Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada; Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2S2, Canada; Women and Children's Health Research Institute, University of Alberta, Edmonton, Alberta T6G 1C9, Canada
| | - Randi B Gombos
- Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2S2, Canada; Physiology, University of Alberta, Edmonton, Alberta T5G 2H7, Canada; Women and Children's Health Research Institute, University of Alberta, Edmonton, Alberta T6G 1C9, Canada
| | - Shaomeng Wang
- Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada; Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
| | - Meagan Brown
- Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada; Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
| | - Denise G Hemmings
- Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada; Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta T6G 2S2, Canada; Women and Children's Health Research Institute, University of Alberta, Edmonton, Alberta T6G 1C9, Canada; Cardiovascular Research Center, University of Alberta, Edmonton, Alberta T6G 2S2, Canada; Li Ka Shing Institute of Virology, University of Alberta, Edmonton, Alberta T6G 2E1, Canada.
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Fisher MA, Lloyd ML. A Review of Murine Cytomegalovirus as a Model for Human Cytomegalovirus Disease-Do Mice Lie? Int J Mol Sci 2020; 22:ijms22010214. [PMID: 33379272 PMCID: PMC7795257 DOI: 10.3390/ijms22010214] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/10/2020] [Accepted: 12/17/2020] [Indexed: 12/12/2022] Open
Abstract
Since murine cytomegalovirus (MCMV) was first described in 1954, it has been used to model human cytomegalovirus (HCMV) diseases. MCMV is a natural pathogen of mice that is present in wild mice populations and has been associated with diseases such as myocarditis. The species-specific nature of HCMV restricts most research to cell culture-based studies or to the investigation of non-invasive clinical samples, which may not be ideal for the study of disseminated disease. Initial MCMV research used a salivary gland-propagated virus administered via different routes of inoculation into a variety of mouse strains. This revealed that the genetic background of the laboratory mice affected the severity of disease and altered the extent of subsequent pathology. The advent of genetically modified mice and viruses has allowed new aspects of disease to be modeled and the opportunistic nature of HCMV infection to be confirmed. This review describes the different ways that MCMV has been used to model HCMV diseases and explores the continuing difficulty faced by researchers attempting to model HCMV congenital cytomegalovirus disease using the mouse model.
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Affiliation(s)
- Michelle A. Fisher
- Division of Infection and Immunity, School of Biomedical Sciences, The University of Western Australia, Nedlands 6009, Australia;
| | - Megan L. Lloyd
- Division of Infection and Immunity, School of Biomedical Sciences, The University of Western Australia, Nedlands 6009, Australia;
- Marshall Centre for Infectious Diseases Research and Training, Division of Infection and Immunity, School of Biomedical Sciences, The University of Western Australia, Nedlands 6009, Australia
- Correspondence:
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Franke N, Bette M, Marquardt A, Briese T, Lipkin WI, Kurz C, Ehrenreich J, Mack E, Baying B, Beneš V, Rodepeter FR, Neff A, Teymoortash A, Eivazi B, Geisthoff U, Stuck BA, Bakowsky U, Mandic R. Virome Analysis Reveals No Association of Head and Neck Vascular Anomalies with an Active Viral Infection. In Vivo 2018; 32:1323-1331. [PMID: 30348684 DOI: 10.21873/invivo.11382] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/20/2018] [Accepted: 09/28/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Vascular anomalies encompass different vascular malformations [arteriovenous (AVM), lymphatic (LM), venous lymphatic (VLM), venous (VM)] and vascular tumors such as hemangiomas (HA). The pathogenesis of vascular anomalies is still poorly understood. Viral infection was speculated as a possible underlying cause. MATERIALS AND METHODS A total of 13 human vascular anomalies and three human skin control tissues were used for viral analysis. RNA derived from AVM (n=4) and normal skin control (n=3) tissues was evaluated by RNA sequencing. The Virome Capture Sequencing Platform for Vertebrate Viruses (VirCapSeq-VERT) was deployed on 10 tissues with vascular anomalies (2×AVM, 1×HA, 1×LM, 2×VLM, 4×VM). RESULTS RNA sequencing did not show any correlation of AVM with viral infection. By deploying VirCapSeq-VERT, no consistent viral association was seen in the tested tissues. CONCLUSION The analysis does not point to the presence of an active viral infection in vascular anomalies. However, transient earlier viral infections, e.g. during pregnancy, cannot be excluded with this approach.
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Affiliation(s)
- Nora Franke
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Michael Bette
- Institute of Anatomy and Cell Biology, Philipps University, Marburg, Germany
| | - André Marquardt
- Department of Hematology, Oncology and Immunology, University Hospital Giessen and Marburg, Marburg, Germany
| | - Thomas Briese
- Center for Infection and Immunity, Columbia University, New York City, NY, U.S.A
| | - W Ian Lipkin
- Center for Infection and Immunity, Columbia University, New York City, NY, U.S.A
| | - Christopher Kurz
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Jovine Ehrenreich
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Elisabeth Mack
- Department of Hematology, Oncology and Immunology, University Hospital Giessen and Marburg, Marburg, Germany
| | - Bianka Baying
- Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Vladimir Beneš
- Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | | | - Andreas Neff
- Department of Oral and Maxillofacial Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Afshin Teymoortash
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Behfar Eivazi
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Urban Geisthoff
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Boris A Stuck
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
| | - Udo Bakowsky
- Department of Pharmaceutical Technology and Biopharmacy, Philipps University, Marburg, Germany
| | - Robert Mandic
- Department of Otolaryngology/Head and Neck Surgery, University Hospital Giessen and Marburg, Marburg, Germany
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Rahim MMA, Tu MM, Mahmoud AB, Wight A, Abou-Samra E, Lima PDA, Makrigiannis AP. Ly49 receptors: innate and adaptive immune paradigms. Front Immunol 2014; 5:145. [PMID: 24765094 PMCID: PMC3980100 DOI: 10.3389/fimmu.2014.00145] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 03/20/2014] [Indexed: 11/13/2022] Open
Abstract
The Ly49 receptors are type II C-type lectin-like membrane glycoproteins encoded by a family of highly polymorphic and polygenic genes within the mouse natural killer (NK) gene complex. This gene family is designated Klra, and includes genes that encode both inhibitory and activating Ly49 receptors in mice. Ly49 receptors recognize class I major histocompatibility complex-I (MHC-I) and MHC-I-like proteins on normal as well as altered cells. Their functional homologs in humans are the killer cell immunoglobulin-like receptors, which recognize HLA class I molecules as ligands. Classically, Ly49 receptors are described as being expressed on both the developing and mature NK cells. The inhibitory Ly49 receptors are involved in NK cell education, a process in which NK cells acquire function and tolerance toward cells that express “self-MHC-I.” On the other hand, the activating Ly49 receptors recognize altered cells expressing activating ligands. New evidence shows a broader Ly49 expression pattern on both innate and adaptive immune cells. Ly49 receptors have been described on multiple NK cell subsets, such as uterine NK and memory NK cells, as well as NKT cells, dendritic cells, plasmacytoid dendritic cells, macrophages, neutrophils, and cells of the adaptive immune system, such as activated T cells and regulatory CD8+ T cells. In this review, we discuss the expression pattern and proposed functions of Ly49 receptors on various immune cells and their contribution to immunity.
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Affiliation(s)
- Mir Munir A Rahim
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa , Ottawa, ON , Canada
| | - Megan M Tu
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa , Ottawa, ON , Canada
| | - Ahmad Bakur Mahmoud
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa , Ottawa, ON , Canada ; College of Applied Medical Sciences, Taibah University , Madinah Munawwarah , Kingdom of Saudi Arabia
| | - Andrew Wight
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa , Ottawa, ON , Canada
| | - Elias Abou-Samra
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa , Ottawa, ON , Canada
| | - Patricia D A Lima
- Biomedical and Molecular Sciences, Queen's University , Kingston, ON , Canada
| | - Andrew P Makrigiannis
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa , Ottawa, ON , Canada
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Gombos RB, Brown JC, Teefy J, Gibeault RL, Conn KL, Schang LM, Hemmings DG. Vascular dysfunction in young, mid-aged and aged mice with latent cytomegalovirus infections. Am J Physiol Heart Circ Physiol 2012; 304:H183-94. [PMID: 23125213 DOI: 10.1152/ajpheart.00461.2012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Human cytomegalovirus (HCMV) is associated with vascular diseases in both immunosuppressed and immunocompetent individuals. CMV infections cycle between active and latent phases throughout life. We and others have shown vascular dysfunction during active mouse CMV (mCMV) infections. Few studies have examined changes in physiology during latent CMV infections, particularly vascular responses or whether the negative effects of aging on vascular function and fertility will be exacerbated under these conditions. We measured vascular responses in intact mesenteric and uterine arteries dissected from young, mid-aged, and aged latently mCMV-infected (mCMV genomes are present but infectious virus is undetectable) and age-matched uninfected mice using a pressure myograph. We tested responses to the α(1)-adrenergic agonist phenylephrine, the nitric oxide donor sodium nitroprusside, and the endothelium-dependent vasodilator methacholine. In young latently mCMV-infected mice, vasoconstriction was increased and vasodilation was decreased in mesenteric arteries, whereas both vasoconstriction and vasodilation were increased in uterine arteries compared with those in age-matched uninfected mice. In reproductively active mid-aged latently infected mice, mesenteric arteries showed little change, whereas uterine arteries showed greatly increased vasoconstriction. These vascular effects may have contributed to the decreased reproductive success observed in mid-aged latently mCMV-infected compared with age-matched uninfected mice (16.7 vs. 46.7%, respectively). In aged latently infected mice, vasodilation is increased in mesenteric and uterine arteries likely to compensate for increased vasoconstriction to mediators other than phenylephrine. The novel results of this study show that even when active mCMV infections become undetectable, vascular dysfunction continues and differs with age and artery origin.
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Affiliation(s)
- R B Gombos
- Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Alberta, Canada
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Gombos RB, Teefy J, Lee A, Hemmings DG. Impact of Local Endothelial Challenge with Cytomegalovirus or Glycoprotein B on Vasodilation in Intact Pressurized Arteries from Nonpregnant and Pregnant Mice1. Biol Reprod 2012; 87:83. [DOI: 10.1095/biolreprod.112.099168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Gombos RB, Hemmings DG. Differential effects on nitric oxide-mediated vasodilation in mesenteric and uterine arteries from cytomegalovirus-infected mice. Am J Physiol Heart Circ Physiol 2010; 299:H1124-34. [DOI: 10.1152/ajpheart.01113.2009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Chronic cytomegalovirus (CMV) infections are implicated in vascular diseases. Recently, we showed that an active mouse CMV (mCMV) infection in nonpregnant mice increased endothelial-dependent vasodilation in isolated mesenteric and uterine arteries. In late pregnancy, while increased vasodilation was found in mesenteric arteries from infected mice, there was a dramatic decrease in uterine arteries. Understanding the mechanisms for these vascular changes during CMV infections is important for pregnancy outcomes and long-term consequences of this chronic infection. Increased nitric oxide (NO) is implicated in CMV-associated atherosclerosis, and CMV replication is dependent on prostaglandin H synthase (PGHS) activity. Alternatively, CMV infections decrease NO under inflammatory conditions. We therefore hypothesized that changes in the contribution by NO or PGHS-induced vasodilators would explain the increased or decreased endothelial-dependent vasodilation in arteries from nonpregnant and late pregnant mice, respectively. We found that the contribution by NO to methacholine-induced vasodilation was significantly increased in mesenteric, but not uterine, arteries isolated from nonpregnant and pregnant mCMV-infected mice. Prostaglandin inhibition did not affect endothelial-dependent vasodilation in any group. Vasodilation responses to sodium nitroprusside, an NO donor, were increased in mesenteric and uterine arteries isolated only from mCMV-infected nonpregnant mice. These results explain the increased vasodilation responses observed in mesenteric arteries from mCMV-infected mice; however, the decreased vasodilation in uterine arteries from pregnant mice could not be explained by these mechanisms. Thus CMV infection affects the contribution of NO differently in endothelial-dependent vasodilation in pregnant compared with nonpregnant mice and also in the mesenteric compared with the uterine vascular bed.
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Affiliation(s)
| | - Denise G. Hemmings
- Obstetrics and Gynecology, and
- Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada
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Khoretonenko MV, Leskov IL, Jennings SR, Yurochko AD, Stokes KY. Cytomegalovirus infection leads to microvascular dysfunction and exacerbates hypercholesterolemia-induced responses. THE AMERICAN JOURNAL OF PATHOLOGY 2010; 177:2134-44. [PMID: 20802174 DOI: 10.2353/ajpath.2010.100307] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Cytomegalovirus (CMV) persistently infects more than 60% of the worldwide population. In immunocompetent hosts, it has been implicated in several diseases, including cardiovascular disease, possibly through the induction of inflammatory pathways. Cardiovascular risk factors promote an inflammatory phenotype in the microvasculature long before clinical disease is evident. This study determined whether CMV also impairs microvascular homeostasis and synergizes with hypercholesterolemia to exaggerate these responses. Intravital microscopy was used to assess endothelium-dependent and -independent arteriolar vasodilation and venular leukocyte and platelet adhesion in mice after injection with either mock inoculum or murine CMV (mCMV). Mice were fed a normal (ND) or high-cholesterol (HC) diet beginning at 5 weeks postinfection (p.i.), or a HC diet for the final 4 weeks of infection. mCMV-ND mice exhibited impaired endothelium-dependent vasodilation versus mock-ND at 9 and 12 weeks and endothelium-independent arteriolar dysfunction by 24 weeks. Transient mild leukocyte adhesion occurred in mCMV-ND venules at 7 and 21 weeks p.i. HC alone caused temporary arteriolar dysfunction and venular leukocyte and platelet recruitment, which were exaggerated and prolonged by mCMV infection. The time of introduction of HC after mCMV infection determined whether mCMV+HC led to worse venular inflammation than either factor alone. These findings reveal a proinflammatory influence of persistent mCMV on the microvasculature, and suggest that mCMV infection enhances microvasculature susceptibility to both inflammatory and thrombogenic responses caused by hypercholesterolemia.
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Affiliation(s)
- Mikhail V Khoretonenko
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana 71130-3932, USA
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