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Human Cytomegalovirus Up-Regulates Endothelin Receptor Type B: Implication for Vasculopathies?
- Source :
- Open Forum Infectious Diseases; Fall2015, Vol. 2 Issue 4, p1-14, 14p
- Publication Year :
- 2015
-
Abstract
- Background. Both endothelin receptor type B ([ET<subscript>B</subscript>R], a G protein-coupled receptor that mediates the vascular effects of the potent vasoconstrictor endothelin-1) and human cytomegalovirus ([HCMV], a ubiquitous herpesvirus) have been implicated in the pathogenesis of cardiovascular disease (CVD). The effects of HCMV infection on ET<subscript>B</subscript>R expression are unknown. We hypothesized that HCMV may contribute to the pathogenesis of CVD via ET<subscript>B</subscript>R modulation. Methods. Human CMV effects on ET<subscript>B</subscript>R were studied in vitro in endothelial cells (ECs) and smooth muscle cells (SMCs) and ex vivo in human carotid plaque tissue specimens. Expression of ET<subscript>B</subscript>R and viral immediate-early were quantified using quantitative polymerase chain reaction. Functional consequences after ET<subscript>B</subscript>R blockade in ECs were examined by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide proliferation, wound healing, tube formation, and flow adhesion assays. Results. Human CMV is capable of upregulating both ET<subscript>B</subscript>R mRNA and protein expression in ECs and SMCs. The ET<subscript>B</subscript>R was also abundantly expressed in ECs, foam cells, and SMCs, and, more importantly, in HCMV-positive cells in human carotid plaques. Endothelin receptor type B blockade led to decreased proliferation and reduced tumor necrosis factor α-mediated leukocyte recruitment in both uninfected and HCMV-infected ECs. Direct HCMV infection was antimigratory and antiangiogenic in ECs. Conclusions. Human CMV may contribute to CVD via ET<subscript>B</subscript>R induction. [ABSTRACT FROM AUTHOR]
- Subjects :
- CYTOMEGALOVIRUS diseases
ENDOTHELIN receptors
CARDIOVASCULAR diseases
Subjects
Details
- Language :
- English
- ISSN :
- 23288957
- Volume :
- 2
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Open Forum Infectious Diseases
- Publication Type :
- Academic Journal
- Accession number :
- 112080646
- Full Text :
- https://doi.org/10.1093/ofid/ofv155