Publications by authors named "Magny J"

Background: The treatment of congenital cytomegalovirus (CMV) infection is usually administered to neonates after birth; however, it can be anticipated during the prenatal period by treating pregnant women in order to reduce the severity of the congenital disease. The most commonly used treatment for CMV during pregnancy is valaciclovir; however, valganciclovir has a higher potency against CMV and is the first choice for neonates with congenital CMV disease.

Objectives: We investigated neonatal and maternal safety of tertiary prevention in infected fetuses showing ultrasound features of infection using valganciclovir.

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  • About 20% of neonates with congenital cytomegalovirus (cCMV) experience long-term health issues, making early prediction of outcomes crucial for treatment and counseling.
  • The study followed 227 neonates diagnosed with cCMV to identify predictive markers; key findings showed maternal primary infection during the first trimester greatly increased the risk of negative outcomes.
  • A model using normal hearing, platelet count, and cranial ultrasound at birth showed high specificity and can help clinicians tailor care for cCMV-affected neonates.
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Background: Congenital cytomegalovirus (cCMV) infection is frequent and potentially severe. The immunobiology of cCMV infection is poorly understood, involving cytokines that could be carried within or on the surface of extracellular vesicles (EV). We investigated intra-amniotic cytokines, mediated or not by EV, in cCMV infection.

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Objective: To evaluate cytomegalovirus (CMV) viral load dynamics in blood and saliva during the first 2 years of life in symptomatic and asymptomatic infected infants and to identify whether these kinetics could have practical clinical implications.

Study Design: The Cymepedia cohort prospectively included 256 congenitally infected neonates followed for 2 years. Whole blood and saliva were collected at inclusion and months 4 and 12, and saliva at months 18 and 24.

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To describe the frequency and nature of premedication practices for neonatal tracheal intubation (TI) in 2011; to identify independent risk factors for the absence of premedication; to compare data with those from 2005 and to confront observed practices with current recommendations. Data concerning TI performed in neonates during the first 14 days of their admission to participating neonatal/pediatric intensive care units were prospectively collected at the bedside. This study was part of the Epidemiology of Procedural Pain in Neonates study (EPIPPAIN 2) conducted in 16 tertiary care units in the region of Paris, France, in 2011.

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Objective: To evaluate the feasibility of amplification of the viral genome by polymerase chain reaction (PCR) analysis of trophoblast samples obtained by chorionic villus sampling (CVS) in cases of maternal primary infection (MPI) with cytomegalovirus (CMV) in early pregnancy.

Methods: This was a prospective study carried out at the Department of Obstetrics and Fetal Medicine, Hopital Necker-E.M.

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is a pathogen emerging worldwide as a leading cause of health care-associated infections. A standardized high-resolution typing method to document transmission and dissemination of multidrug-resistant strains is needed. Our aim was to provide a core genome multilocus sequence typing (cgMLST) scheme for to improve the international surveillance of We defined a cgMLST scheme based on 699 core genes and used it to investigate the population structure of the species and the genetic relatedness of isolates recovered from infants hospitalized in several wards of a French hospital.

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Premature birth is a test for fatherhood's process: it may hinder the ability to feel like a father or like a good father, and the ability to make the baby be part of the family line. A clinical research did explore how care givers in neonatal services may deploy psychic functions which support and revitalize a process of fatherhood which is potentially disturbed.

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Objectives: To compare the ability of detailed routine ultrasound examination, performed without knowledge of maternal serology and fetal status, with that of targeted prenatal imaging performed in prenatal diagnostic units in cases of known fetal infection to identify cytomegalovirus (CMV)-infected fetuses that will develop long-term sequelae.

Methods: All prenatal imaging reports were collected for 255 children with congenital CMV in a registered cohort between 2013 and 2017 (NCT01923636). All women had undergone detailed routine fetal ultrasound examination at 20-24 and 30-34 weeks as part of routine antenatal care.

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  • A nationwide study in France analyzed hospitalization rates for bronchiolitis across four seasons to identify risk factors among infants, focusing on chronic medical conditions.
  • Data from nearly 3.9 million infants discharged from maternity wards from 2008-2013 was used to determine the frequency of bronchiolitis hospitalizations.
  • The study found that along with prematurity, chronic conditions like muscular dystrophy, congenital heart diseases, and other congenital abnormalities significantly increased the risk of hospitalization due to bronchiolitis.
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Congenital cytomegalovirus (CMV) infection is the most common non-genetic cause of hearing loss and neurological disorder in children. Its overall prevalence is approximately 0.5% in Europe.

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Background: In women seronegative before pregnancy, congenital cytomegalovirus (cCMV)-related sequelae are exclusively seen in those infected in the first trimester of pregnancy. Following a maternal primary infection in the first trimester, up to 30% of infected neonates suffer long-term sequelae. Maternal parity is an established risk factor of cCMV in previously seronegative women.

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Objective: To define the predictive value (PV) of known prognostic factors of fetal infection with Cytomegalovirus following maternal primary infection <14 weeks of gestation, at different time points of pregnancy: the end of the second trimester; following prenatal magnetic resonance imaging (MRI) at 32 weeks of gestation; and using all ultrasound scans performed in the third trimester (US3rdT).

Design: A retrospective study.

Setting: Reference fetal medicine unit.

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Background: The known relationship between the gestational age at maternal primary infection an the outcome of congenital CMV is based on small, retrospective studies conducted between 1980 and 2011. They reported that 32% and 15% of cases had sequelae following a maternal primary infection in the first and second or the third trimester, respectively. We aimed to revisit this relationship prospectively between 2011 and 2017, using accurate virological tools.

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Three cases of Bacillus cereus infection or colonization occurred in the same region in France, and milk from the milk bank was suspected as a possible common source of contamination. All Batches delivered to the three cases complied with the requirements of the bacteriological reference method recommended by good practices guidelines. Still, a retrospective analysis with a more sensitive method showed one batch to contain B.

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Objectives: Preterm premature rupture of membranes (PPROM) is a leading complication following fetoscopic laser coagulation (FLC) for twin-twin transfusion syndrome (TTTS). Our primary objective was to describe the impact of improvements in surgical technique on survival and rate of PPROM over time. The secondary objective was to assess potential risk factors for PPROM.

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Characteristic preterm EEG patterns of "Delta-brushes" (DBs) have been reported in the temporal cortex following auditory stimuli, but their spatio-temporal dynamics remains elusive. Using 32-electrode EEG recordings and co-registration of electrodes' position to 3D-MRI of age-matched neonates, we explored the cortical auditory-evoked responses (AERs) after 'click' stimuli in 30 healthy neonates aged 30-38 post-menstrual weeks (PMW). (1) We visually identified auditory-evoked DBs within AERs in all the babies between 30 and 33 PMW and a decreasing response rate afterwards.

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Objectives: Congenital chylothorax is a rare disease and prognostic factors are key element in properly informing parents. This study aimed at determining the prenatal factors associated with neonatal survival in a cohort of liveborn infants with congenital chylothorax.

Study Design: Observational monocentric cohort study including all liveborn neonates consecutively admitted for congenital chylothorax.

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  • Benign neonatal sleep myoclonus is a common, non-epileptic condition in healthy full-term newborns, characterized by jerks during sleep with normal EEG readings typically observed.
  • A study analyzed EEG recordings of four neonates experiencing myoclonic jerks, focusing on their characteristics and any potential EEG changes, alongside testing responses to tactile stimuli on other newborns.
  • The findings revealed that myoclonic jerks produced identifiable slow wave patterns on EEG, particularly on vertex electrodes, which could be misinterpreted as seizure activity, potentially leading to inappropriate anti-seizure treatments.
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Background: Abnormal interhemispheric synchrony has been described in many clinical compromises in brain function, but its prognostic value in neonatal hypoxic-ischemic encephalopathy (HIE) is unknown.

Objectives: The study aimed at describing the frequency of abnormal interhemispheric synchrony in infants with HIE and to explore its prognostic value. The main outcome was survival without major disabilities.

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Background: Congenital heart defects (CHD) and preterm birth (PTB) are major causes of infant mortality. However, limited data exist on risk of mortality associated with PTB for newborns with CHD. Our objective was to assess impact of PTB on risk of infant mortality for newborns with CHD, while taking into account the role of associated anomalies and other potentially confounding factors.

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  • The study addressed gaps in understanding congenital cytomegalovirus (cCMV) by screening 11,715 newborns' saliva for infection, analyzing maternal infection type and sociodemographic factors.
  • Results showed a positive predictive value of 59% for CMV PCR, with variations in birth prevalence and risk factors linked to maternal age, previous births, and socioeconomic status.
  • The findings highlight the necessity for follow-up confirmation of positive CMV tests and emphasize that seronegative, parous women are at the highest risk for cCMV, suggesting the need for targeted prevention efforts.
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