Study of Soluble HLA-G in Congenital Human Cytomegalovirus Infection

Human leukocyte antigen-G (HLA-G) is a nonclassical HLA class I antigen that is expressed during pregnancy contributing to maternal-fetal tolerance. HLA-G can be expressed as membrane-bound and soluble forms. HLA-G expression increases strongly during viral infections such as congenital human cytome...

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Main Authors: Roberta Rizzo, Liliana Gabrielli, Daria Bortolotti, Valentina Gentili, Giulia Piccirilli, Angela Chiereghin, Claudia Pavia, Silvia Bolzani, Brunella Guerra, Giuliana Simonazzi, Francesca Cervi, Maria Grazia Capretti, Enrico Fainardi, Dario Di Luca, Maria Paola Landini, Tiziana Lazzarotto
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Journal of Immunology Research
Online Access:http://dx.doi.org/10.1155/2016/3890306
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author Roberta Rizzo
Liliana Gabrielli
Daria Bortolotti
Valentina Gentili
Giulia Piccirilli
Angela Chiereghin
Claudia Pavia
Silvia Bolzani
Brunella Guerra
Giuliana Simonazzi
Francesca Cervi
Maria Grazia Capretti
Enrico Fainardi
Dario Di Luca
Maria Paola Landini
Tiziana Lazzarotto
author_facet Roberta Rizzo
Liliana Gabrielli
Daria Bortolotti
Valentina Gentili
Giulia Piccirilli
Angela Chiereghin
Claudia Pavia
Silvia Bolzani
Brunella Guerra
Giuliana Simonazzi
Francesca Cervi
Maria Grazia Capretti
Enrico Fainardi
Dario Di Luca
Maria Paola Landini
Tiziana Lazzarotto
author_sort Roberta Rizzo
collection DOAJ
description Human leukocyte antigen-G (HLA-G) is a nonclassical HLA class I antigen that is expressed during pregnancy contributing to maternal-fetal tolerance. HLA-G can be expressed as membrane-bound and soluble forms. HLA-G expression increases strongly during viral infections such as congenital human cytomegalovirus (HCMV) infections, with functional consequences in immunoregulation. In this work we investigated the expression of soluble (s)HLA-G and beta-2 microglobulin (component of HLA) molecules in correlation with the risk of transmission and severity of congenital HCMV infection. We analyzed 182 blood samples from 130 pregnant women and 52 nonpregnant women and 56 amniotic fluid samples from women experiencing primary HCMV infection. The median levels of sHLA-G in maternal serum of women with primary HCMV infection were higher in comparison with nonprimary and uninfected pregnant women (p<0.001). AF from HCMV symptomatic fetuses presented higher sHLA-G levels in comparison with infected asymptomatic fetuses (p<0.001), presence of HLA-G free-heavy chain, and a concentration gradient from amniotic fluid to maternal blood. No significant statistical difference of beta-2 microglobulin median levels was observed between all different groups. Our results suggest the determination of sHLA-G molecules in both maternal blood and amniotic fluid as a promising biomarker of diagnosis of maternal HCMV primary infection and fetal HCMV disease.
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spelling doaj-art-4758fedd0b4a423793d815f442a75ca52025-02-03T05:59:48ZengWileyJournal of Immunology Research2314-88612314-71562016-01-01201610.1155/2016/38903063890306Study of Soluble HLA-G in Congenital Human Cytomegalovirus InfectionRoberta Rizzo0Liliana Gabrielli1Daria Bortolotti2Valentina Gentili3Giulia Piccirilli4Angela Chiereghin5Claudia Pavia6Silvia Bolzani7Brunella Guerra8Giuliana Simonazzi9Francesca Cervi10Maria Grazia Capretti11Enrico Fainardi12Dario Di Luca13Maria Paola Landini14Tiziana Lazzarotto15Department of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Ferrara, ItalyOperative Unit of Clinical Microbiology, St. Orsola-Malpighi University Hospital, Bologna, ItalyDepartment of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Ferrara, ItalyDepartment of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Ferrara, ItalyOperative Unit of Clinical Microbiology, St. Orsola-Malpighi University Hospital, Bologna, ItalyOperative Unit of Clinical Microbiology, St. Orsola-Malpighi University Hospital, Bologna, ItalyOperative Unit of Clinical Microbiology, St. Orsola-Malpighi University Hospital, Bologna, ItalyDepartment of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Ferrara, ItalyOperative Unit of Obstetrics and Prenatal Medicine, Department of Medical and Surgical Sciences, St. Orsola-Malpighi University Hospital, University of Bologna, Bologna, ItalyOperative Unit of Obstetrics and Prenatal Medicine, Department of Medical and Surgical Sciences, St. Orsola-Malpighi University Hospital, University of Bologna, Bologna, ItalyOperative Unit of Obstetrics and Prenatal Medicine, Department of Medical and Surgical Sciences, St. Orsola-Malpighi University Hospital, University of Bologna, Bologna, ItalyOperative Unit of Neonatology, St. Orsola-Malpighi University Hospital, Bologna, ItalyOperative Unit of Neuroradiology, Careggi University Hospital, Firenze, ItalyDepartment of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Ferrara, ItalyOperative Unit of Clinical Microbiology, Department of Specialised, Experimental, and Diagnostic Medicine, St. Orsola-Malpighi University Hospital, University of Bologna, Bologna, ItalyOperative Unit of Clinical Microbiology, Department of Specialised, Experimental, and Diagnostic Medicine, St. Orsola-Malpighi University Hospital, University of Bologna, Bologna, ItalyHuman leukocyte antigen-G (HLA-G) is a nonclassical HLA class I antigen that is expressed during pregnancy contributing to maternal-fetal tolerance. HLA-G can be expressed as membrane-bound and soluble forms. HLA-G expression increases strongly during viral infections such as congenital human cytomegalovirus (HCMV) infections, with functional consequences in immunoregulation. In this work we investigated the expression of soluble (s)HLA-G and beta-2 microglobulin (component of HLA) molecules in correlation with the risk of transmission and severity of congenital HCMV infection. We analyzed 182 blood samples from 130 pregnant women and 52 nonpregnant women and 56 amniotic fluid samples from women experiencing primary HCMV infection. The median levels of sHLA-G in maternal serum of women with primary HCMV infection were higher in comparison with nonprimary and uninfected pregnant women (p<0.001). AF from HCMV symptomatic fetuses presented higher sHLA-G levels in comparison with infected asymptomatic fetuses (p<0.001), presence of HLA-G free-heavy chain, and a concentration gradient from amniotic fluid to maternal blood. No significant statistical difference of beta-2 microglobulin median levels was observed between all different groups. Our results suggest the determination of sHLA-G molecules in both maternal blood and amniotic fluid as a promising biomarker of diagnosis of maternal HCMV primary infection and fetal HCMV disease.http://dx.doi.org/10.1155/2016/3890306
spellingShingle Roberta Rizzo
Liliana Gabrielli
Daria Bortolotti
Valentina Gentili
Giulia Piccirilli
Angela Chiereghin
Claudia Pavia
Silvia Bolzani
Brunella Guerra
Giuliana Simonazzi
Francesca Cervi
Maria Grazia Capretti
Enrico Fainardi
Dario Di Luca
Maria Paola Landini
Tiziana Lazzarotto
Study of Soluble HLA-G in Congenital Human Cytomegalovirus Infection
Journal of Immunology Research
title Study of Soluble HLA-G in Congenital Human Cytomegalovirus Infection
title_full Study of Soluble HLA-G in Congenital Human Cytomegalovirus Infection
title_fullStr Study of Soluble HLA-G in Congenital Human Cytomegalovirus Infection
title_full_unstemmed Study of Soluble HLA-G in Congenital Human Cytomegalovirus Infection
title_short Study of Soluble HLA-G in Congenital Human Cytomegalovirus Infection
title_sort study of soluble hla g in congenital human cytomegalovirus infection
url http://dx.doi.org/10.1155/2016/3890306
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