Differences and similarities in endothelial and angiogenic profiles of preeclampsia and COVID-19 in pregnancy - 20/07/22
Abstract |
Background |
COVID-19 presents a spectrum of signs and symptoms in pregnant women that might resemble preeclampsia. Differentiation between severe COVID-19 and preeclampsia is difficult in some cases.
Objective |
To study biomarkers of endothelial damage, coagulation, innate immune response, and angiogenesis in preeclampsia and COVID-19 in pregnancy in addition to in vitro alterations in endothelial cells exposed to sera from pregnant women with preeclampsia and COVID-19.
Study Design |
Plasma and sera samples were obtained from pregnant women with COVID-19 infection classified into mild (n=10) or severe (n=9) and from women with normotensive pregnancies as controls (n=10) and patients with preeclampsia (n=13). A panel of plasmatic biomarkers was assessed, including vascular cell adhesion molecule-1, soluble tumor necrosis factor-receptor I, heparan sulfate, von Willebrand factor antigen (activity and multimeric pattern), α2-antiplasmin, C5b9, neutrophil extracellular traps, placental growth factor, soluble fms-like tyrosine kinase-1, and angiopoietin 2. In addition, microvascular endothelial cells were exposed to patients’ sera, and changes in the cell expression of intercellular adhesion molecule 1 on cell membranes and von Willebrand factor release to the extracellular matrix were evaluated through immunofluorescence. Changes in inflammation cell signaling pathways were also assessed by of p38 mitogen-activated protein kinase phosphorylation. Statistical analysis included univariate and multivariate methods.
Results |
Biomarker profiles of patients with mild COVID-19 were similar to those of controls. Both preeclampsia and severe COVID-19 showed significant alterations in most circulating biomarkers with distinctive profiles. Whereas severe COVID-19 exhibited higher concentrations of vascular cell adhesion molecule-1, soluble tumor necrosis factor-α receptor I, heparan sulfate, von Willebrand factor antigen, and neutrophil extracellular traps, with a significant reduction of placental growth factor compared with controls, preeclampsia presented a marked increase in vascular cell adhesion molecule-1 and soluble tumor necrosis factor-α receptor I (significantly increased compared with controls and patients with severe COVID-19), with a striking reduction in von Willebrand factor antigen, von Willebrand factor activity, and α2-antiplasmin. As expected, reduced placental growth factor, increased soluble fms-like tyrosine kinase-1 and angiopoietin 2, and a very high soluble fms-like tyrosine kinase-1 to placental growth factor ratio were also observed in preeclampsia. In addition, a significant increase in C5b9 and neutrophil extracellular traps was also detected in preeclampsia compared with controls. Principal component analysis demonstrated a clear separation between patients with preeclampsia and the other groups (first and second components explained 42.2% and 13.5% of the variance), mainly differentiated by variables related to von Willebrand factor, soluble tumor necrosis factor-receptor I, heparan sulfate, and soluble fms-like tyrosine kinase-1. Von Willebrand factor multimeric analysis revealed the absence of von Willebrand factor high-molecular-weight multimers in preeclampsia (similar profile to von Willebrand disease type 2A), whereas in healthy pregnancies and COVID-19 patients, von Willebrand factor multimeric pattern was normal.
Sera from both preeclampsia and severe COVID-19 patients induced an overexpression of intercellular adhesion molecule 1 and von Willebrand factor in endothelial cells in culture compared with controls. However, the effect of preeclampsia was less pronounced than the that of severe COVID-19. Immunoblots of lysates from endothelial cells exposed to mild and severe COVID-19 and preeclampsia sera showed an increase in p38 mitogen-activated protein kinase phosphorylation. Patients with severe COVID-19 and preeclampsia were statistically different from controls, suggesting that both severe COVID-19 and preeclampsia sera can activate inflammatory signaling pathways.
Conclusion |
Although similar in in vitro endothelial dysfunction, preeclampsia and severe COVID-19 exhibit distinctive profiles of circulating biomarkers related to endothelial damage, coagulopathy, and angiogenic imbalance that could aid in the differential diagnosis of these entities.
Le texte complet de cet article est disponible en PDF.Key words : angiogenic factors, angiopoietin, C5b9, COVID-19, endothelial dysfunction, heparan sulfate, hypertensive disorders of pregnancy, neutrophil extracellular traps, placental growth factor, preeclampsia, SARS-CoV-2, soluble fms-like tyrosine kinase-1, soluble tumor necrosis factor-α receptor I, von Willebrand factor
Plan
M.P. and L.Y. contributed equally as first authors. |
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F.C. and M.D.R. contributed equally as last authors. |
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The authors report no conflict of interest. |
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The authors acknowledge support from Fundació Clínic, Barcelona (HCB/2020/0401), Fundació La Marató de TV3 (202026-10), Jazz Pharmaceuticals Plc (IST-16-10355), German José Carreras Leukaemia Foundation (03R/ 2019), Instituto de Salud Carlos III from Spanish Government (PI19/00888), Bristol Myers-Squibb & Pfizer (ERISTA 15), La Caixa Foundation, the Kids Corona Child and Mother COVID-19 Open Data and Biobank Initiative from Hospital Sant Joan de Déu (Stavros Niarchos Foundation, Santander Foundation, and others), Fundació Privada Daniel Bravo Andreu, Generalitat de Catalunya (2017-SGR675 and CERCA Programme), Fundació Catalana de Trasplantament (FCT 2021), and ad hoc patronage funds for research on COVID-19 from donations from citizens and organizations to the Hospital Clínic de Barcelona-Fundació Clínic per a la Recerca Biomèdica, Barcelona, Spain. All funders had no role in the study design, data collection, data analysis, data interpretation, or writing of the manuscript. |
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Cite this article as: Palomo M, Youssef L, Ramos A, et al. Differences and similarities in endothelial and angiogenic profiles of preeclampsia and COVID-19 in pregnancy. Am J Obstet Gynecol 2022;227:277.e1-16. |
Vol 227 - N° 2
P. 277.e1-277.e16 - août 2022 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.