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Pediatric Research

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https://www.readbyqxmd.com/read/28613279/nox-mediated-impairment-of-pdgf-induced-dna-synthesis-in-peripheral-blood-lymphocytes-of-children-with-idiopathic-nephrotic-syndrome
#1
Amal Al-Eisa, Gursev S Dhaunsi
BackgroundCellular oxidative stress, inflammatory responses, and immunogenic events are involved in pathogenesis of idiopathic nephrotic syndrome (INS); however, the exact mechanism remains unknown. We examined NADPH oxidase (NOX) activity and platelet-derived growth factor (PDGF)-induced DNA synthesis in peripheral blood lymphocytes (PBL) of patients with INS.MethodsPBL from 15 patients with INS and 15 age- and gender-matched controls were isolated, and enzyme activities of NOX, catalase, and superoxide dismutase (SOD) were measured along with the assay of malondialdehyde levels and bromo-deoxyuridine incorporation...
June 14, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28613278/ductus-arteriosus-gene-profile-for-fetal-maturation-versus-postnatal-closure
#2
Flavio Coceani, Francesca Scebba, Debora Angeloni
No abstract text is available yet for this article.
June 14, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28613277/response-to-coceani-et-al
#3
Ravi Goyal, Ronald I Clyman
No abstract text is available yet for this article.
June 14, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28553990/investigating-the-effects-of-cerebrospinal-fluid-removal-on-cerebral-blood-flow-and-oxidative-metabolism-in-infants-with-post-hemorrhagic-ventricular-dilatation
#4
Peter J McLachlan, Jessica Kishimoto, Mamadou Diop, Daniel Milej, David S C Lee, Sandrine de Ribaupierre, Keith St Lawrence
BackgroundPost-hemorrhagic ventricular dilatation (PHVD) is predictive of mortality and morbidity among very-low-birth-weight preterm infants. Impaired cerebral blood flow (CBF) due to elevated intracranial pressure (ICP) is believed to be a contributing factor.MethodsA hyperspectral near-infrared spectroscopy (NIRS) method of measuring CBF and the cerebral metabolic rate of oxygen (CMRO2) was used to investigate perfusion and metabolism changes in patients receiving a ventricular tap (VT) based on clinical management...
June 14, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28609432/protective-effects-of-amniotic-fluid-in-the-setting-of-necrotizing-enterocolitis
#5
REVIEW
Soham Dasgupta, Sunil Kumar Jain
Necrotizing Enterocolitis (NEC) is the most common life threatening condition affecting preterm infants. NEC occurs in 1-5% of all neonatal intensive care admissions and 5-10% of very low birth weight infants. The protective role of human breast milk (BM) has been well established. It has also been shown that amniotic fluid (AF) and breast milk have many similarities in terms of presence of growth and other immune-modulatory factors. This finding led to the initial hypothesis that AF may exert similar protective effects against the development of NEC as does BM...
June 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28609431/polymorphisms-in-urea-cycle-enzyme-genes-are-associated-with-persistent-pulmonary-hypertension-of-the-newborn
#6
Dinushan C Kaluarachchi, Caitlin J Smith, Jonathan M Klein, Jeffrey C Murray, John M Dagle, Kelli K Ryckman
BACKGROUND: Persistent pulmonary hypertension of the newborn (PPHN) is characterized by elevated pulmonary vascular resistance. Endogenous nitric oxide is critical for regulation of pulmonary vascular resistance. Nitric oxide is generated from L -arginine, supplied by the urea cycle (UC). We hypothesized that polymorphisms in UC enzyme genes and low concentrations of UC intermediates are associated with PPHN. METHODS: We performed a family based candidate gene analysis to study 48 single nucleotide polymorphisms (SNPs) in 6 UC enzyme genes...
June 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28609430/polymorphisms-in-cyp2c9-are-associated-with-response-to-indomethacin-among-neonates-with-patent-ductus-arteriosus
#7
Caitlin J Smith, Kelli K Ryckman, Timothy M Bahr, John M Dagle
BACKGROUND: PDA is a common complication seen in preterm infants. Indomethacin is routinely used to treat PDA. Evidence suggests that indomethacin response is highly heritable. This study investigated the association between SNPs in CYP2C9 and PDA closure in response to indomethacin. METHODS: Six SNPs in CYP2C9 were analyzed for association with indomethacin response. A case-control analysis was performed among neonates who responded to indomethacin (responders) and neonates who required surgical ligation (non-responders)...
June 13, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604761/biocommentary-eci-highlight-september-2017
#8
Raquel Lucas
Pediatric Research accepted article preview online, 12 June 2017. doi:10.1038/pr.2017.142.
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604760/developing-a-neonatal-acute-kidney-injury-research-definition-a-report-from-the-niddk-neonatal-aki-workshop
#9
Michael Zappitelli, Namasivayam Ambalavanan, David J Askenazi, Marva M Moxey-Mims, Paul L Kimmel, Robert A Star, Carolyn L Abitbol, Patrick D Brophy, Guillermo Hidalgo, Mina Hanna, Catherine M Morgan, Tonse N K Raju, Patricio Ray, Zayhara Reyes-Bou, Amani Roushdi, Stuart L Goldstein
Normal developmental changes during postnatal life hinder the development of an AKI definition and advancement of neonatal AKI research. This report summarizes the expert discussion at a National Institute of Diabetes and Digestive and Kidney Diseases sponsored neonatal AKI workshop, on knowledge gaps in defining neonatal AKI. The most important knowledge gaps and neonatal AKI definition research recommendations were agreed upon and defined. Several challenges were identified in defining neonatal AKI using serum creatinine (SCr) and urine output criteria applied in adults and children...
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604759/markers-of-maternal-and-infant-metabolism-are-associated-with-ventricular-dysfunction-in-infants-of-obese-women-with-type-2-diabetes
#10
W Todd Cade, Philip T Levy, Rachel A Tinius, Mehgna D Patel, Swati Choudhry, Mark R Holland, Gautam K Singh, Alison G Cahill
BACKGROUND: To test the hypothesis that infants born to obese women with pregestational type 2 diabetes mellitus (IBDM) have ventricular dysfunction at one month that is associated with markers of maternal lipid and glucose metabolism. METHODS: In a prospective observational study of IBDM (OB+DM, n=25), echocardiography measures of septal, left (LV) and right ventricular (RV) function and structure were compared at one month of age to infants born to OB mothers without DM (OB, n=24), and non-OB without DM (Lean, n=23)...
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604758/intrauterine-growth-retardation-associated-syncytin-b-hypermethylation-in-maternal-rat-blood-revealed-by-dna-methylation-array-analysis
#11
Dong-Mei Wu, You-E Yan, Liang-Peng Ma, Han-Xiao Liu, Wen Qu, Jie Ping
BACKGROUND: Emerging evidence suggests that DNA methylation in maternal blood provides a promising target for intrauterine growth retardation (IUGR) screening, a common developmental toxicity. Here, we aimed to screen out IUGR-related DNA methylation status in maternal blood via high throughput profiling. METHODS: Pregnant Wistar rats were subcutaneously administered nicotine (1.0 mg/kg) twice per day from gestational day (GD) 11 to GD20 to establish the IUGR model...
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604757/time-to-lung-aeration-during-a-sustained-inflation-at-birth-is-influenced-by-gestation-in-lambs
#12
Karen E McCall, Andreas D Waldmann, Prue Pereira-Fantini, Regina Oakley, M Miedema, Elizabeth J Perkins, Peter G Davis, Peter A Dargaville, Stephan H Böhm, Raffaele Dellacà, Magdy Sourial, Emanuela Zannin, Anushi Rajapaksa, Andre Tan, Andy Adler, Inéz Frerichs, David G Tingay
BACKGROUND: Current sustained lung inflation (SI) approaches use uniform pressures and durations. We hypothesised that gestational age related mechanical and developmental differences would affect the time required to achieve optimal lung aeration, and resultant lung volumes, during SI delivery at birth in lambs. METHODS: 49 lambs, in five cohorts between 118d and 139d gestation (term 142d), received a standardised 40 cmH2O SI, delivered until 10 s after lung volume stability (optimal aeration) was visualised on real-time electrical impedance tomography (EIT), or to a maximum duration of 180 s...
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604756/anthropometry-dxa-and-leptin-reflect-subcutaneous-but-not-visceral-abdominal-adipose-tissue-by-mri-in-197-healthy-adolescents
#13
Jeanette Tinggaard, Casper P Hagen, Anders N Christensen, Annette Mouritsen, Mikkel G Mieritz, Christine Wohlfahrt-Veje, Jørn W Helge, Thomas N Beck, Eva Fallentin, Rasmus Larsen, Rikke B Jensen, Anders Juul, Katharina M Main
BACKGROUND: Abdominal fat distribution is associated with development of cardio-metabolic disease, independently of BMI. We assessed anthropometry, serum adipokines and DXA as markers of abdominal subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) by MRIMETHODS:We performed a cross-sectional study including 197 healthy adolescents (114 boys) aged 10-15 years nested within a longitudinal population-based cohort. Clinical examination, blood sampling, DXA and abdominal MRI was performed...
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28604755/physical-exercise-intervention-at-school-improved-hepcidin-inflammation-and-iron-metabolism-in-overweight-and-obese-children-and-adolescents
#14
Susana Coimbra, Cristina Catarino, Henrique Nascimento, Ana Inês Alves, Ana Filipa Medeiros, Elsa Bronze-da-Rocha, Elísio Costa, Petronila Rocha-Pereira, Luísa Aires, André Seabra, Jorge Mota, Helena Ferreira Mansilha, Carla Rêgo, Alice Santos-Silva, Luís Belo
BACKGROUND: Obesity is often associated with iron deficiency in children and adolescents. We aimed to study the effect of 8-month physical exercise (PE) intervention in hepcidin and other markers of inflammation and in iron status in overweight/obese children and adolescents. METHODS: Seventy-three overweight/obese children and adolescents participated in the 8-month longitudinal study; they were divided in two groups according to their participation in an after-school PE program: PE (n=44) and control (n=29) groups...
June 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28590464/policy-solutions-to-recruiting-and-retaining-minority-children-in-research
#15
Jean L Raphael, K Casey Lion, Cynthia F Bearer
No abstract text is available yet for this article.
June 7, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28493861/maternal-pre-pregnancy-obesity-and-neuropsychological-development-in-pre-school-children-a-prospective-cohort-study
#16
Maribel Casas, Joan Forns, David Martínez, Mònica Guxens, Ana Fernandez-Somoano, Jesus Ibarluzea, Nerea Lertxundi, Mario Murcia, Marisa Rebagliato, Adonina Tardon, Jordi Sunyer, Martine Vrijheid
BackgroundMaternal pre-pregnancy obesity may impair infant neuropsychological development, but it is unclear whether intrauterine or confounding factors drive this association.MethodsWe assessed whether maternal pre-pregnancy obesity was associated with neuropsychological development in 1,827 Spanish children. At 5 years, cognitive and psychomotor development was assessed using McCarthy Scales of Children's Abilities, attention deficit hyperactivity disorder (ADHD) symptoms using the Criteria of Diagnostic and Statistical Manual of Mental Disorders, and autism spectrum disorder symptoms using the Childhood Asperger Syndrome Test...
June 7, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28486439/branched-chain-and-aromatic-amino-acids-in-relation-to-behavioral-problems-among-young-inuit-from-nunavik-canada-a-cohort-study
#17
Audray St-Jean, Salma Meziou, Cynthia Roy, Pierre Ayotte, Gina Muckle, Michel Lucas
BackgroundObesity and insulin resistance are linked with mood disorders, and elevated concentrations of branched-chain (BCAAs) and aromatic amino acids (AAAs). Our study aimed to prospectively assess the relationship between childhood plasma BCAAs and AAAs, and behavioral problems in young Inuit from Nunavik.MethodsWe analyzed data on 181 children (with a mean age of 11.4 years at baseline) involved in the Nunavik Child Development Study. Plasma BCAA and AAA concentrations were measured in childhood (2005-2010)...
June 7, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28422943/the-effect-of-prenatal-tvoc-exposure-on-birth-and-infantile-weight-the-mothers-and-children-s-environmental-health-study
#18
Moonhee Chang, Hyesook Park, Mina Ha, Yun-Chul Hong, Youn-Hee Lim, Yangho Kim, Young Ju Kim, Dongheon Lee, Eun-Hee Ha
BACKGROUNDVolatile organic compounds (VOCs) might restrict prenatal and postnatal growth. However, the effect of the exposure of prenatal VOCs on postnatal growth has not been studied sufficiently. Thus, we investigated the relationship between the exposure of total volatile organic compounds (TVOCs) during pregnancy and its effects on postnatal growth.METHODSA total of 383 pregnant participants were enrolled from 2006 to 2008. We investigated maternal characteristics using a questionnaire. Personal air samples of TVOCs were obtained in mid or late pregnancy...
June 7, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28422940/body-composition-at-birth-and-height-at-2-years-a-prospective-cohort-study-among-children-in-jimma-ethiopia
#19
Bitiya Admassu, Jonathan C K Wells, Tsinuel Girma, Gregers S Andersen, Victor Owino, Tefera Belachew, Kim F Michaelsen, Mubarek Abera, Rasmus Wibaek, Henrik Friis, Pernille Kæstel
BACKGROUNDLow birth weight is associated with childhood stunting, but equivalent associations for birth body composition (BC) remain unknown. The aim of this study was to assess associations between birth BC and height-for-age z-score (HAZ) at 2 years of age.METHODSIn a prospective cohort study, fat mass (FM) and fat-free mass (FFM) were measured using air-displacement plethysmography within 48 h of birth. Linear regression models were applied to study the relationship between BC at birth and HAZ at 24 ±3 months...
June 7, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28288146/timing-of-developmental-reduction-in-epithelial-glutathione-redox-potential-is-associated-with-increased-epithelial-proliferation-in-the-immature-murine-intestine
#20
Graham K Reid, Andrew J Berardinelli, Laurie Ray, Arena R Jackson, Andrew S Neish, Jason M Hansen, Patricia W Denning
BackgroundThe intracellular redox potential of the glutathione (GSH)/glutathione disulfide (GSSG) couple regulates cellular processes. In vitro studies indicate that a reduced GSH/GSSG redox potential favors proliferation, whereas a more oxidized redox potential favors differentiation. Intestinal growth depends upon an appropriate balance between the two. However, how the ontogeny of intestinal epithelial cellular (IEC) GSH/GSSG redox regulates these processes in the developing intestine has not been fully characterized in vivo...
June 7, 2017: Pediatric Research
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