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fetal cytomegalovirus

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https://www.readbyqxmd.com/read/27903736/t-and-b-cell-markers-in-dried-blood-spots-of-neonates-with-congenital-cytomegalovirus-infection-b-cell-numbers-at-birth-are-associated-with-long-term-outcomes
#1
Roberta Rovito, Marjolein J Korndewal, Menno C van Zelm, Dimitrios Ziagkos, Els Wessels, Mirjam van der Burg, Aloys C M Kroes, Anton W Langerak, Ann C T M Vossen
Congenital CMV infection (cCMV) is the most common congenital infection that can cause long-term impairment (LTI). The pathogenesis of LTI is not completely understood. Fetal immunity may play a role in controlling the infection and preventing LTI, although immune activation may also contribute to fetal immunopathology. In this study, we analyzed various molecular markers of T and B cell numbers in neonatal dried blood spots of 99 children with cCMV and 54 children without cCMV: δRec-ψJα signal joints on TCR excision circles, intron recombination signal sequence k-deleting element signal joints on Igκ-deleting recombination excision circles, genomic intron recombination signal sequence k-deleting element coding joint, genomic Vδ1-Jδ1, and Vδ2-Jδ1 rearrangements...
November 30, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27902356/luciferase-tagged-wild-type-and-tropism-deficient-mouse-cytomegaloviruses-reveal-early-dynamics-of-host-colonization-following-peripheral-challenge
#2
Helen Farrell, Martha Oliveira, Kate Macdonald, Joseph Yunis, Michael Mach, Kimberley Bruce, Philip Stevenson, Rhonda Cardin, Nicholas Davis-Poynter
Cytomegaloviruses (CMVs) establish persistent, systemic infections and cause disease by maternal-fetal transfer, suggesting that their dissemination is a key target for anti-viral intervention. Late clinical presentation has meant that human CMV dissemination is not well understood. Murine CMV provides a tractable model. Whole mouse imaging of virus-expressed luciferase has proved a useful way to track systemic infections. MCMV, in which the abundant lytic gene M78 was luciferase tagged via a self-cleaving peptide (M78-LUC), allowed serial, unbiased imaging of systemic and peripheral infection without significant virus attenuation...
October 26, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27878897/minimal-immune-determinants-connect-zika-virus-human-cytomegalovirus-and-toxoplasma-gondii-to-microcephaly-related-human-proteins
#3
Guglielmo Lucchese, Darja Kanduc
Aiming at the molecular definition of the relationship(s) between prenatal infections and fetal microcephaly and using pentapeptides as minimal immune determinants, we analyzed the peptide matching between proteins from infectious agents involved in microcephalic syndromes (namely Zika virus, human Cytomegalovirus, and Toxoplasma gondii) and human proteins that, when altered, have been specifically associated with microcephaly. We report that an unexpected high number of epitopic pentapeptides (ie, 34) are common to the three fetopathogenic agents and repeatedly occur throughout an important number of microcephaly-related human proteins...
November 23, 2016: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/27832434/monitoring-of-venus-transgenic-cell-migration-during-pregnancy-in-non-transgenic-rabbits
#4
N Lipták, O I Hoffmann, A Kerekes, G Iski, D Ernszt, K Kvell, L Hiripi, Z Bősze
Cell transfer between mother and fetus were demonstrated previously in several species which possess haemochorial placenta (e.g. in humans, mice, rats, etc.). Here we report the assessment of fetal and maternal microchimerism in non-transgenic (non-TG) New Zealand white rabbits which were pregnant with transgenic (TG) fetuses and in non-TG newborns of TG does. The TG construct, including the Venus fluorophore cDNA driven by a ubiquitous cytomegalovirus enhancer, chicken ß-actin promoter (CAGGS), was previously integrated into the rabbit genome by Sleeping Beauty transposon system...
November 10, 2016: Transgenic Research
https://www.readbyqxmd.com/read/27797961/a-replication-defective-human-cytomegalovirus-vaccine-for-prevention-of-congenital-infection
#5
Dai Wang, Daniel C Freed, Xi He, Fengsheng Li, Aimin Tang, Kara S Cox, Sheri A Dubey, Suzanne Cole, Muneeswara Babu Medi, Yaping Liu, Jingyuan Xu, Zhi-Qiang Zhang, Adam C Finnefrock, Liping Song, Amy S Espeseth, John W Shiver, Danilo R Casimiro, Tong-Ming Fu
Congenital human cytomegalovirus (HCMV) infection occurs in ~0.64% of infants born each year in the United States and is the leading nongenetic cause of childhood neurodevelopmental disabilities. No licensed HCMV vaccine is currently available. Natural immunity to HCMV in women before pregnancy is associated with a reduced risk of fetal infection, suggesting that a vaccine is feasible if it can reproduce immune responses elicited by natural infection. On the basis of this premise, we developed a whole-virus vaccine candidate from the live attenuated AD169 strain, with genetic modifications to improve its immunogenicity and attenuation...
October 26, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27781316/stillbirth-and-intrauterine-fetal-death-role-of-routine-histological-organ-sampling-to-determine-cause-of-death
#6
J Man, J C Hutchinson, M Ashworth, L Judge-Kronis, S Levine, N J Sebire
OBJECTIVES: Guidelines for the investigation of intrauterine death and sudden unexpected death in infancy (SUDI) recommend, based on expert opinion, autopsy procedures and tissue sampling strategies for histological analysis. Although stillbirth is much more common than SUDI, there have been no large-scale studies published which evaluate the usefulness of histological evaluation of specific organs in stillbirth for determining cause of death. Our aim was to evaluate the use of macroscopic and microscopic assessment of internal organs to determine cause of intrauterine death...
October 25, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27703572/cytomegalovirus-infection-during-pregnancy-and-its-impact-on-the-intrauterine-fetal-development-case-report
#7
Mariya Angelova, Emil Kovachev, Nikolai Todorov
AIM: The aim of this publication is to present a case of CMV infection during pregnancy, with clinical manifestations of the development of microcephaly and simultaneous dilatation of the 3rd and 4th brain ventricle at 23 weeks gestation. This article discusses the role of ultrasound screening in the second trimester of pregnancy. CASE PRESENTATION: We present the case of a 25-year-old woman with the initials S.K. in her second pregnancy that came to our antenatal Consulting Centre...
September 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27699182/study-of-soluble-hla-g-in-congenital-human-cytomegalovirus-infection
#8
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
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...
2016: Journal of Immunology Research
https://www.readbyqxmd.com/read/27683575/activation-of-langerhans-type-dendritic-cells-alters-human-cytomegalovirus-infection-and-reactivation-in-a-stimulus-dependent-manner
#9
Roxanne Coronel, Desyree M Jesus, Lucia Dalle Ore, Joe S Mymryk, Laura Hertel
Oral mucosal Langerhans cells (LC) are likely to play important roles in host defense against infection by human cytomegalovirus (CMV). We previously showed that in vitro-differentiated immature LC (iLC) populations contain smaller amounts of infected cells but produce higher yields than mature LC (mLC) cultures, obtained by iLC stimulation with fetal bovine serum (FBS), CD40 ligand (CD40L) and lipopolysaccharide (LPS). Here, we sought to determine if exposure to select stimuli can improve LC permissiveness to infection, if specific components of the mLC cocktail are responsible for lowering viral yields, if this is due to defects in progeny production or release, and if these restrictions are also effective against reactivated virus...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27673425/treatment-of-perinatal-viral-infections-to-improve-neurologic-outcomes
#10
REVIEW
William J Muller
Viral infections in the fetus or newborn often involve the central nervous system (CNS) and can lead to significant morbidity and mortality. Substantial progress has been made in identifying interventions decreasing adverse neurodevelopmental outcomes in this population. This review highlights progress in treatment of important viruses affecting the CNS in these susceptible hosts, focusing on herpes simplex virus (HSV), cytomegalovirus (CMV), human immunodeficiency virus (HIV), and enteroviruses. The observation that high-dose acyclovir improves mortality in neonatal HSV disease culminated decades of antiviral research for this disease...
October 26, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27644020/progressive-lesions-of-central-nervous-system-in-microcephalic-fetuses-with-suspected-congenital-zika-virus-syndrome
#11
Manoel Sarno, Marcelo Aquino, Kleber Pimentel, Renata Cabral, Gisela Costa, Fernanda Bastos, Carlos Brites
OBJECTIVE: Our aim was to describe the pattern and progression of Central Nervous System (CNS) lesions of microcephalic fetuses with suspected Zika Virus (ZIKV) infection. METHODS: We analyzed fetuses diagnosed with microcephaly after a routine primary care ultrasound scan suspect a fetal microcephaly in Salvador, Brazil, from July/2015 to February/2016 and these pregnancies were followed until delivery. Microcephaly was diagnosed when the head circumference was below two or more standard deviation for gestational age and its relationship with ZIKV infection was defined according to World Health Organization criteria...
September 19, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27639132/maternal-pre-pregnancy-risk-factors-for-miscarriage-from-a-prevention-perspective-a-cohort-study-in-china
#12
Huan Zhou, Yongping Liu, Lu Liu, Min Zhang, Xingzhi Chen, Yulong Qi
OBJECTIVE: To assess the relationship of the pre-pregnancy modifiable risks with miscarriage. STUDY DESIGN: We randomly selected 51 communities or villages from January 2013 to December 2014 in Anhui, China. We calculated incidence rate ratios (RR) and 95% confidence intervals (CIs) for each risk factor for miscarriage. RESULTS: The incidence rate of miscarriage was 7.45%, and pre-embryonic loss account for 12.66%, embryonic loss account for 38%, and fetal losses account for 49...
November 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27638253/persistent-cytomegalovirus-infection-in-amniotic-membranes-of-the-human-placenta
#13
Takako Tabata, Matthew Petitt, June Fang-Hoover, Martin Zydek, Lenore Pereira
Human cytomegalovirus (HCMV) is the leading viral cause of birth defects, including microcephaly, neurological deficits, hearing impairment, and vision loss. We previously reported that epithelial cells in amniotic membranes of placentas from newborns with intrauterine growth restriction and underlying congenital HCMV infection contain viral proteins in cytoplasmic vesicles. Herein, we immunostained amniotic membranes from 51 placentas from symptomatic and asymptomatic congenital infection with HCMV DNA in amniotic fluid and/or newborn saliva, intrauterine growth restriction, preterm deliveries, and controls...
November 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27589693/antiviral-effects-of-ifit1-in-human-cytomegalovirus-infected-fetal-astrocytes
#14
Li Zhang, Bin Wang, Ling Li, Dong-Meng Qian, Hong Yu, Mei-Lan Xue, Ming Hu, Xu-Xia Song
The prominent feature of human cytomegalovirus (HCMV) is cell tropism specificity for human fetal nervous system, which leads to severe fetal nervous system damage especially in first-trimester gestation. In this study, human astrocytes isolated from fetal brain were infected with HCMV AD169 and whole genome transcriptome profile was performed. The results showed that the gene expression of interferon stimulated genes (ISGs), chemokine and chemokine receptors were significantly up-regulated (P < 0.01)...
September 2, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27573577/zika-virus-reigniting-the-torch
#15
Carolyn B Coyne, Helen M Lazear
The recent association between Zika virus (ZIKV) infection during pregnancy and fetal microcephaly has led to a renewed interest in the mechanisms by which vertically transmitted microorganisms reach the fetus and cause congenital disease. In this Opinion article, we provide an overview of the structure and cellular composition of the human placenta and of the mechanisms by which traditional 'TORCH' pathogens (Toxoplasma gondii, other, rubella virus, cytomegalovirus and herpes simplex virus) access the fetal compartment...
November 2016: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/27512442/congenital-cytomegalovirus-infection-clinical-presentation-epidemiology-diagnosis-and-prevention
#16
REVIEW
Wendy J van Zuylen, Stuart T Hamilton, Zin Naing, Beverly Hall, Antonia Shand, William D Rawlinson
Cytomegalovirus is the most common congenital infection causing serious disease in infants. It is the leading infectious cause of sensorineural hearing loss and neurodevelopmental disability in developed countries. Despite the clinical importance of congenital cytomegalovirus, surveys show there is limited awareness and knowledge in the medical and general community about congenital cytomegalovirus infection. This article reviews the clinical features, global epidemiology, transmission and risk factors for cytomegalovirus infections...
December 2014: Obstetric Medicine
https://www.readbyqxmd.com/read/27472761/cytomegalovirus-infection-of-the-rat-developing-brain-in-utero-prominently-targets-immune-cells-and-promotes-early-microglial-activation
#17
Robin Cloarec, Sylvian Bauer, Hervé Luche, Emmanuelle Buhler, Emilie Pallesi-Pocachard, Manal Salmi, Sandra Courtens, Annick Massacrier, Pierre Grenot, Natacha Teissier, Françoise Watrin, Fabienne Schaller, Homa Adle-Biassette, Pierre Gressens, Marie Malissen, Thomas Stamminger, Daniel N Streblow, Nadine Bruneau, Pierre Szepetowski
BACKGROUND: Congenital cytomegalovirus infections are a leading cause of neurodevelopmental disorders in human and represent a major health care and socio-economical burden. In contrast with this medical importance, the pathophysiological events remain poorly known. Murine models of brain cytomegalovirus infection, mostly neonatal, have brought recent insights into the possible pathogenesis, with convergent evidence for the alteration and possible involvement of brain immune cells. OBJECTIVES AND METHODS: In order to confirm and expand those findings, particularly concerning the early developmental stages following infection of the fetal brain, we have created a model of in utero cytomegalovirus infection in the developing rat brain...
2016: PloS One
https://www.readbyqxmd.com/read/27420192/salivary-glands-and-human-congenital-cytomegalovirus-infection-what-happens-in-early-fetal-life
#18
Liliana Gabrielli, Maria Paola Bonasoni, Angela Chiereghin, Giulia Piccirilli, Donatella Santini, Claudia Pavia, Gabriele Turello, Diego Squarzoni, Tiziana Lazzarotto
Salivary glands are a site of human cytomegalovirus (CMV) replication, latency, and persistence. Prolonged secretion of virus in saliva for months following a primary infection contribute to horizontal transmission. In order to better understand the early effects of CMV on salivary glands and the mechanisms of viral persistent replication, submandibular glands of six CMV congenitally infected fetuses at 21 weeks gestation were studied. Three fetuses at the same gestational age from CMV-seronegative women were compared as negative controls...
February 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/27351041/-intrauterine-infections-as-a-risk-factor-of-the-development-of-sensorineural-impairment-of-hearing
#19
REVIEW
M Yu Boboshko, S M Vikhnin, I V Savenko
Intrauterine infections are a crucial pathogenic factor exerting an appreciable influence on the development of the fetus. They can provoke intrauterine death, cause multiple lesions in the organs and tissues as well as long-term complications that manifest themselves at the later stages of the growth and development of the child. One of such complications is the sensorineural loss of hearing. The importance of hearing impairment arises from the high prevalence of tis condition and frequent incapacitation it causes in the patients...
2016: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/27349430/development-of-the-adaptive-nk-cell-response-to-human-cytomegalovirus-in-the-context-of-aging
#20
Miguel López-Botet, Aura Muntasell, José E Martínez-Rodríguez, María López-Montañés, Marcel Costa-García, Aldi Pupuleku
Human cytomegalovirus (HCMV) establishes a highly prevalent life-long latent infection. Though generally subclinical, HCMV infection may have severe consequences during fetal development and in immunocompromised individuals. Based on epidemiological studies HCMV(+) serology has been associated with the development of atherosclerosis, immune senescence and an increase mortality rate in elderly people. Such long-term detrimental effects of the viral infection presumably result from an inefficient immune control of the pathogen, depending on the quality and evolution of the individual host-pathogen relationship...
September 2016: Mechanisms of Ageing and Development
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