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Biomarker preterm infants

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https://www.readbyqxmd.com/read/28170188/endothelial-progenitor-cells-as-prognostic-markers-of-preterm-birth-associated-complications
#1
Mariane Bertagnolli, Anne Monique Nuyt, Bernard Thébaud, Thuy Mai Luu
Preterm birth is associated with alteration of the vascular tree that can result in disease states such as bronchopulmonary dysplasia and retinopathy of prematurity during the neonatal period and emphysema and hypertension in adulthood. Studies have suggested a potential role for endothelial progenitor cells in the pathophysiology of prematurity-related complications involving blood vessels; however, this knowledge has never been synthesized. We conducted a systematic review of the published data to examine the characteristics of endothelial progenitor cells in relation to preterm birth in humans...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28159311/intestinal-barrier-maturation-in-very-low-birthweight-infants-relationship-to-feeding-and-antibiotic-exposure
#2
Bushra Saleem, Adora C Okogbule-Wonodi, Alessio Fasano, Laurence S Magder, Jacques Ravel, Shiv Kapoor, Rose M Viscardi
OBJECTIVE: To test the hypothesis that feeding and antibiotic exposures affect intestinal barrier maturation in preterm infants, we serially measured intestinal permeability (IP) biomarkers in infants <33 weeks gestation (gestational age [GA]) during the first 2 weeks of life. STUDY DESIGN: Eligible infants <33 weeks GA were enrolled within 4 days of birth in a prospective study of IP biomarkers (NCT01756040). Study participants received the nonmetabolized sugars lactulose/rhamnose enterally on study days 1, 8, and 15 and lactulose/rhamnose were measured in urine by high-performance liquid chromatography...
January 31, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28157383/biomarkers-of-oxidative-stress-in-pregnancy-complications
#3
James Sm Cuffe, Ziheng Calvin Xu, Anthony V Perkins
Pregnancy complications including pre-eclampsia, gestational-diabetes mellitus, preterm birth and intrauterine growth restriction can cause acute and chronic health problems for the mother and lead to fetal loss or dysregulation of infant physiology. The human placenta is susceptible to oxidative stress and oxidative damage in early gestation contributes to the onset of these conditions later in pregnancy. Current methods of predicting pregnancy complications are limited and although a large number of factors are associated with disease progression, few biomarkers have been used to aid in disease diagnosis early in gestation...
February 3, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28132814/deficits-in-top-down-sensory-prediction-in-infants-at-risk-due-to-premature-birth
#4
Lauren L Emberson, Alex M Boldin, Julie E Riccio, Ronnie Guillet, Richard N Aslin
A prominent theoretical view is that the brain is inherently predictive [1, 2] and that prediction helps drive the engine of development [3, 4]. Although infants exhibit neural signatures of top-down sensory prediction [5, 6], in order to establish that prediction supports development, it must be established that deficits in early prediction abilities alter trajectories. We investigated prediction in infants born prematurely, a leading cause of neuro-cognitive impairment worldwide [7]. Prematurity, independent of medical complications, leads to developmental disturbances [8-12] and a broad range of developmental delays [13-17]...
February 6, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28131458/biomarkers-for-the-diagnosis-of-neonatal-sepsis-and-necrotizing-entercolitis-clinical-practice-guidelines
#5
Margaret Gilfillan, Vineet Bhandari
Sepsis and necrotizing enterocolitis are major contributors to morbidity and mortality in neonates, especially in those born preterm. While therapeutic interventions are available for both (for e.g. antibiotics), a major dilemma is early diagnosis so that these interventions can be done in a timely manner. As clinical evaluation alone is unreliable in identifying infants in the early stages of neonatal sepsis or necrotizing enterocolitis, there is a need to find specific biomarkers associated with these conditions to improve diagnostic capabilities...
January 25, 2017: Early Human Development
https://www.readbyqxmd.com/read/28121958/circulating-angiogenic-factors-are-related-to-the-severity-of-gestational-hypertension-and-preeclampsia-and-their-adverse-outcomes
#6
Alfredo Leaños-Miranda, Francisco Méndez-Aguilar, Karla Leticia Ramírez-Valenzuela, Marilyn Serrano-Rodríguez, Guadalupe Berumen-Lechuga, Carlos José Molina-Pérez, Irma Isordia-Salas, Inova Campos-Galicia
Gestational hypertension (GH) and preeclampsia (PE) are characterized by an imbalance in angiogenic factors. However, the relationship among these factors with the severity of hypertensive disorders of pregnancy (HDP) and adverse outcomes are not fully elucidated. We examined whether these biomarkers are related with the severity of HDP and adverse outcomes.Using a cross-sectional design, serum concentrations of placental growth factor (PlGF), soluble fms-like tyrosine kinase-1 (sFlt-1), and soluble endoglin were determined in 764 pregnant women: 75 healthy pregnant, 83 with mild GH (mGH), 105 with severe GH (sGH), 122 with mild PE (mPE), and 379 with severe PE (sPE)...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28112458/plasticity-of-neonatal-neuronal-networks-in-very-premature-infants-source-localization-of-temporal-theta-activity-the-first-endogenous-neural-biomarker-in-temporoparietal-areas
#7
L Routier, M Mahmoudzadeh, M Panzani, H Azizollahi, S Goudjil, G Kongolo, F Wallois
Temporal theta slow-wave activity (TTA-SW) in premature infants is a specific signature of the early development of temporal networks, as it is observed at the turning point between non-sensory driven spontaneous local processing and cortical network functioning. The role in development and the precise location of TTA-SW remain unknown. Previous studies have demonstrated that preterms from 28 weeks of gestational age (wGA) are able to discriminate phonemes and voice, supporting the idea of a prior genetic structural or activity-dependent fingerprint that would prepare the auditory network to compute auditory information at the onset of thalamocortical connectivity...
January 23, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28099428/biomarkers-of-adiposity-are-elevated-in-preterm-very-low-birth-weight-infants-at-1-2-and-3-years-of-age
#8
Andrea F Duncan, Joshua A Frankfurt, Roy J Heyne, Charles R Rosenfeld
BACKGROUND: Preterm, very-low-birth-weight (PT-VLBW) neonates are at-risk for metabolic syndrome later in life. At 1-3yrs, they exhibit excessive weight-for-length z-scores (Wt-LZ) and elevated systolic blood pressures (SBP). Serum adipokines are biomarkers of adiposity, but expression in PT-VLBW infants is unclear. We examined the correlation between serum adipokine levels, anthropometric measures and SBP in PT-VLBW neonates at follow-up. METHODS: This was a cross-sectional cohort study of PT-VLBW infants at 1, 2 and 3yrs of age (40/cohort)...
January 18, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28059709/microstructure-of-the-default-mode-network-in-preterm-infants
#9
J Cui, O Tymofiyeva, R Desikan, T Flynn, H Kim, D Gano, C P Hess, D M Ferriero, A J Barkovich, D Xu
BACKGROUND AND PURPOSE: Diffusion and fMRI has been providing insights to brain development in addition to anatomic imaging. This study aimed to evaluate the microstructure of white matter tracts underlying the default mode network in premature infants by using resting-state functional MR imaging in conjunction with diffusion tensor imaging-based tractography. MATERIALS AND METHODS: A cohort of 44 preterm infants underwent structural T1-weighted imaging, resting-state fMRI, and DTI at 3T, including 21 infants with brain injuries and 23 infants with normal-appearing structural imaging as controls...
February 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28045978/cord-blood-acute-phase-reactants-predict-early-onset-neonatal-sepsis-in-preterm-infants
#10
Leena B Mithal, Hannah L Palac, Ram Yogev, Linda M Ernst, Karen K Mestan
BACKGROUND: Early onset sepsis (EOS) is a major cause of morbidity and mortality in preterm infants, yet diagnosis remains inadequate resulting in missed cases or prolonged empiric antibiotics with adverse consequences. Evaluation of acute phase reactant (APR) biomarkers in umbilical cord blood at birth may improve EOS detection in preterm infants with intrauterine infection. METHODS: In this nested case-control study, infants (29.7 weeks gestation, IQR: 27.7-32...
2017: PloS One
https://www.readbyqxmd.com/read/28034304/temporal-bacterial-and-metabolic-development-of-the-preterm-gut-reveals-specific-signatures-in-health-and-disease
#11
Christopher J Stewart, Nicholas D Embleton, Emma C L Marrs, Daniel P Smith, Andrew Nelson, Bashir Abdulkadir, Tom Skeath, Joseph F Petrosino, John D Perry, Janet E Berrington, Stephen P Cummings
BACKGROUND: The preterm microbiome is crucial to gut health and may contribute to necrotising enterocolitis (NEC), which represents the most significant pathology affecting preterm infants. From a cohort of 318 infants, <32 weeks gestation, we selected 7 infants who developed NEC (defined rigorously) and 28 matched controls. We performed detailed temporal bacterial (n = 641) and metabolomic (n = 75) profiling of the gut microbiome throughout the disease. RESULTS: A core community of Klebsiella, Escherichia, Staphyloccocus, and Enterococcus was present in all samples...
December 29, 2016: Microbiome
https://www.readbyqxmd.com/read/28011976/genetic-polymorphisms-of-sp-a-sp-b-and-sp-d-and-risk-of-respiratory-distress-syndrome-in-preterm-neonates
#12
Hong-Yu Chang, Fang Li, Feng-Sheng Li, Cheng-Zhong Zheng, Yan-Zhe Lei, Jing Wang
BACKGROUND We examined selected polymorphisms in 3 pulmonary surfactant-associated proteins (SP) for their influence on serum SP levels and risk of respiratory distress syndrome (RDS) in preterm neonates. MATERIAL AND METHODS Premature infants from a Han population were enrolled, including 100 premature infants with RDS (case group) and 120 premature infants without RDS (control group). SNP genotyping for SP-A (+186A/G and +655C/T), SP-B (-18A/C and 1580C/T), and SP-D (Met11ThrT/C and Ala160ThrG/A) used polymerase chain reaction-restriction fragment length polymorphism...
December 24, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27998626/cardiac-biomarkers-and-haemodynamically-significant-patent-ductus-arteriosus-in-preterm-infants
#13
Dany E Weisz, Patrick J McNamara, Afif El-Khuffash
Accurately defining haemodynamically significant patent ductus arteriosus (PDA) in preterm infants who are at risk of PDA related morbidities are active areas of neonatal research. Natriuretic peptides are cardiac hormones that respond to volume and pressure loading, with elevated plasma levels found in infants with PDA. In the preterm neonatal setting, studies to date have predominantly investigated the ability of these biomarkers to discriminate between infants with and without a PDA at various postnatal ages...
December 17, 2016: Early Human Development
https://www.readbyqxmd.com/read/27925621/presepsin-for-the-detection-of-early-onset-sepsis-in-preterm-newborns
#14
Paolo Montaldo, Roberto Rosso, Alfredo Santantonio, Giovanni Chello, Paolo Giliberti
BACKGROUND: Early-onset sepsis (EOS) is responsible for an important fraction of neonatal morbidity and mortality all over the world. The aim of this study was to assess whether presepsin (P-SEP) can be a more accurate biomarker of EOS compared with pro-calcitonin (PCT) and C-reactive protein (CRP). STUDY DESIGN: Consecutive preterm neonates (<34 wk gestational age, admitted to Neonatal Intensive Care Unit by 6 h of age and undergoing sepsis evaluation) were recruited as part of a case-matched control study...
December 7, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27863706/advanced-neuroimaging-and-its-role-in-predicting-neurodevelopmental-outcomes-in-very-preterm-infants
#15
REVIEW
Nehal A Parikh
Up to 35% of very preterm infants survive with neurodevelopmental impairments (NDI) such as cognitive deficits, cerebral palsy, and attention deficit disorder. Advanced MRI quantitative tools such as brain morphometry, diffusion MRI, magnetic resonance spectroscopy, and functional MRI at term-equivalent age are ideally suited to improve current efforts to predict later development of disabilities. This would facilitate application of targeted early intervention therapies during the first few years of life when neuroplasticity is optimal...
December 2016: Seminars in Perinatology
https://www.readbyqxmd.com/read/27858868/serum-bile-acids-in-term-and-preterm-neonates-a-case-control-study-determining-reference-values-and-the-influence-of-early-onset-sepsis
#16
Evelyn Zöhrer, Bernhard Resch, Hubert Scharnagl, Axel Schlagenhauf, Günter Fauler, Tatjana Stojakovic, Nora Hofer, Uwe Lang, Jörg Jahnel
Serum bile acids (BA) reference values are lacking for neonates. Therefore, this study aimed to determine serum BA reference values in term and preterm neonates. Furthermore, as serum BA concentrations are well-known to rise in septic adults, BA values were determined in early-onset neonatal sepsis (EOS), a common and serious disease in neonates.Using high-performance liquid chromatography-high-resolution mass spectrometry (HPLC-HRMS), we profiled serum BA in 236 infants, including healthy term neonates (n = 84), premature infants (n = 101), and both term infants (n = 35) and preterm infants (n = 16) with EOS...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27846067/detection-of-sepsis-in-preterm-infants-by-fecal-volatile-organic-compounds-analysis-a-proof-of-principle-study
#17
Daniel J C Berkhout, Hendrik J Niemarkt, Martin Buijck, Mirjam M van Weissenbruch, Paul Brinkman, Marc A Benninga, Anton H van Kaam, Boris W Kramer, Peter Andriessen, Nanne K H de Boer, Tim G J de Meij
OBJECTIVES: Several studies associated altered gut microbiota composition in preterm infants with late-onset sepsis (LOS), up to days prior to clinical onset of sepsis. However, microbiota analysis as early diagnostic biomarker is in clinical practice currently not feasible because of logistic aspects and high costs. Therefore, we hypothesized that analysis of fecal volatile organic compounds (VOC) may serve as non-invasive biomarker to predict LOS at a preclinical stage, since VOC reflect the composition and activity of intestinal microbial communities...
November 14, 2016: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/27787507/the-associations-between-early-pregnancy-lipid-profiles-and-pregnancy-outcomes
#18
C Wang, W Zhu, Y Wei, R Su, H Feng, E Hadar, M Hod, H Yang
OBJECTIVE: To evaluate the association between early pregnancy lipid profiles and pregnancy outcomes. STUDY DESIGN: Retrospective 6 months analysis of 5218 singleton pregnant women. Each participant's demographic and medical data were collected by questionnaires and medical records. Total cholesterol (TC), triglycerides (TG), high-density lipid cholesterol (HDL-C) and low-density lipid cholesterol (LDL-C) levels were divided into quartiles, and the women were categorized as having low (<25th percentile), referent (25 to <75th percentile) or high (>75th percentile) TC, TG, HDL-C and LDL-C values...
October 27, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27760764/bnp-troponin-i-and-ykl-40-as-screening-markers-in-extremely-preterm-infants-at-risk-for-pulmonary-hypertension-associated-with-bronchopulmonary-dysplasia
#19
Kai König, Katelyn J Guy, Claudia A Nold-Petry, Charles P Barfield, Geraldine Walsh, Sandra M Drew, Alex Veldman, Marcel F Nold, Dan M Casalaz
Bronchopulmonary dysplasia (BPD) is often complicated by pulmonary hypertension (PH). We investigated three biomarkers potentially suitable as screening markers for extremely preterm infants at risk of BPD-associated PH. In this prospective observational cohort study conducted in a tertiary neonatal intensive care unit, 83 preterm infants with BPD born <28-wk gestation and still inpatients at 36-wk corrected age received an echocardiogram and blood tests of B-type natriuretic peptide (BNP), troponin I, and YKL-40...
December 1, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27740976/patent-ductus-arteriosus-in-the-preterm-infant-diagnostic-and-treatment-options
#20
REVIEW
Stephanie Prescott, Jessica Keim-Malpass
BACKGROUND: The incidence of hemodynamically significant patent ductus arteriosus (hsPDA) increases with decreasing gestational age and is associated with many common morbidities of extreme prematurity. Controversies remain surrounding the definition of hsPDA, the population of infants requiring treatment, the appropriate timing and method of treatment, and the outcomes associated with PDA and its therapies. PURPOSE: This integrative literature review focuses on diagnostic and treatment recommendations derived from the highest levels of evidence...
February 2017: Advances in Neonatal Care: Official Journal of the National Association of Neonatal Nurses
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