Abstract:
:Premature infants are at risk for bilirubin-associated brain damage. In cell cultures bilirubin causes neuronal apoptosis and necrosis. Ibuprofen is used to close the ductus arteriosus, and is often given when hyperbilirubinemia is at its maximum. Ibuprofen is known to interfere with bilirubin-albumin binding. We hypothesized that bilirubin toxicity to cultured rat embryonic cortical neurons is augmented by coincubation with ibuprofen. Incubation with ibuprofen above a concentration of 125 microg/mL reduced cell viability, measured by methylthiazole tetrazolium reduction, to 68% of controls (p < 0.05). Lactate dehydrogenase (LDH) release increased from 29 to 38% (p < 0.01). The vehicle solution did not affect cell viability. Coincubation with 10 microM unconjugated bilirubin (UCB)/human serum albumin in a molar ratio of 3:1 and 250 microg/mL ibuprofen caused additional loss of cell viability and increased LDH release (p < 0.01), DNA fragmentation, and activated caspase-3. Preincubation with the pan-caspase inhibitor z-val-ala-asp-fluoromethyl ketone abolished ibuprofen- and UCB-induced DNA fragmentation. The study demonstrates that bilirubin in low concentration of 10 microM reduces neuron viability and ibuprofen increases this effect. Apoptosis is the underlying cell death mechanism.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Berns M,Toennessen M,Koehne P,Altmann R,Obladen Mdoi
10.1203/PDR.0b013e3181991511subject
Has Abstractpub_date
2009-04-01 00:00:00pages
392-6issue
4eissn
0031-3998issn
1530-0447journal_volume
65pub_type
杂志文章abstract::Fetal dermal wounds heal scarlessly and with a minimal inflammatory response. When a robust inflammatory response is induced at the site of fetal dermal wounds by the application of cytokines, healing results in fibrosis. To test the hypothesis that the reduced inflammatory response in fetal wounds is due to impaired ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.pdr.0000184326.01884.bc
更新日期:2005-12-01 00:00:00
abstract:BACKGROUND:Therapeutic hypothermia (TH) has become standard treatment for severe and moderate hypoxic-ischemic neonatal encephalopathy (HIE). Our group has developed an optically based, noninvasive concept of assessing the capacity for oxygen delivery from the microcirculation to the cells of a tissue under investigati...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2016.16
更新日期:2016-06-01 00:00:00
abstract:BACKGROUND:Recent studies suggest that infantile hypertrophic pyloric stenosis (IHPS) and congenital heart defects (CHDs) may share some genetic risk factors, but little is known about the co-occurrence of the two conditions in patients. METHODS:Our study cohort included 2,212,756 persons born in Denmark 1977-2013. We...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0369-9
更新日期:2019-06-01 00:00:00
abstract::Thrombocytopenia in the first days of life, in association with evidence of reduced megakaryocytopoiesis and platelet production at birth, is common in sick preterm babies. Thrombopoietin (Tpo) is the major regulator of platelet production in adults. However, these babies have low Tpo levels at birth, suggesting that ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199907000-00005
更新日期:1999-07-01 00:00:00
abstract::The mitochondria play a major role in the regulation of intracellular calcium. Despite the fact that the enterocytes receive the majority of absorbed calcium, the role of the intestinal mitochondria in calcium transport during maturation is not known. Therefore, the current studies were designed to characterize calciu...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198901000-00023
更新日期:1989-01-01 00:00:00
abstract::We studied healthy and saline lavaged rabbits during high frequency oscillatory ventilation to determine what combination of frequency (f), tidal volume (Vt), and mean airway pressure (Paw) produced the lowest peak-to-peak alveolar pressure amplitude (Palv) and physiologic blood gas tensions. Sinusoidal volume changes...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199001000-00018
更新日期:1990-01-01 00:00:00
abstract::Pulmonary surfactant is inactivated in meconium aspiration syndrome and neonatal pneumonia. Development of an exogenous surfactant less sensitive to inactivation might be useful for treating these diseases. We investigated in vitro whether addition of the cationic cyclic membrane cross-linking peptide polymyxin B (PxB...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.pdr.0000200806.32822.e6
更新日期:2006-03-01 00:00:00
abstract::Guinea pig gallbladder smooth muscle contractility undergoes a period of postnatal maturation. Because tissues from adult animals contract more forcefully than tissues from newborn animals when stimulated with agonists that activate the contractile process through different mechanisms (receptor activation, membrane de...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199010000-00007
更新日期:1990-10-01 00:00:00
abstract::Depression is one of the most debilitating chronic disorders in the United States, affecting 15 million children in homes with depressed mothers, many of whom endure household chaos, inconsistent nurturing, inadequate safety practices, and harsh discipline. Depressed mothers are under diagnosed and undertreated, yet t...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1038/pr.2015.214
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:Despite substantial heritability in pubertal development, children differ in maturational tempo. HYPOTHESES:(i) puberty and its duration are influenced by early changes in height and adiposity. (ii) Adiposity rebound (AR) is a marker for pubertal tempo. METHODS:We utilized published prospective data from 6...
journal_title:Pediatric research
pub_type: 杂志文章,多中心研究
doi:10.1038/pr.2015.129
更新日期:2015-10-01 00:00:00
abstract::The aim of the present study was to determine the proportion of gamma/delta T-lymphocytes and CD16/CD56 (CD3- and CD3+) cells in the peripheral blood of children and adolescents with Graves' disease (GD; n = 27; mean age, 15.5 +/- 5.1 y) and nontoxic nodular goiter (NTNG; n = 25; mean age, 15.2 +/- 5.7 y), in comparis...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000076663.94850.44
更新日期:2003-09-01 00:00:00
abstract::Completely penetrant mutations in the surfactant protein B gene (SFTPB) and >75% reduction of SFTPB expression disrupt pulmonary surfactant function and cause neonatal respiratory distress syndrome. To inform studies of genetic regulation of SFTPB expression, we created a catalogue of SFTPB variants by comprehensive r...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3180a03232
更新日期:2007-08-01 00:00:00
abstract:BACKGROUND:Continuous and intermittent bolus orogastric feedings are strategies used in infants unable to tolerate normal feeds. METHODS:To determine the effects of feeding modality on protein synthesis in different tissues, neonatal pigs received a balanced formula by orogastric tube as an intermittent bolus feed eve...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2013.89
更新日期:2013-08-01 00:00:00
abstract:BACKGROUND:Cardiovascular (CV) complications are the most significant cause of mortality in adults with Cushing disease (CD); little is known about CV risk factors in children with CD. Measurement of lipoprotein particles by nuclear magnetic resonance (NMR) spectroscopy is a novel technology to assess CV risk. The obje...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0438-0
更新日期:2019-09-01 00:00:00
abstract:BACKGROUND:Childhood body mass index (BMI) trajectory classes are rarely linked to early puberty risk, particularly among Chinese children. We estimated early puberty risk across BMI trajectory classes, investigated factors contributing to pubertal development, and examined differences in final adult height between chi...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0690-3
更新日期:2020-07-01 00:00:00
abstract::Studies were designed to develop an animal model for the syndrome of hypochloremic, hypokalemic metabolic alkalosis (HMA), and failure to thrive in infants due to intake of chloride-deficient formula. Littermate canine puppies, 2 wk old, were fed soy formula containing normal chloride, 20 mEq/liter (NC, n = 5), or low...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198705000-00015
更新日期:1987-05-01 00:00:00
abstract::Cerebellar injury has been increasingly recognized as a complication of preterm birth, with decreased cerebellar volumes seen on follow-up neuroimaging. A cohort of 38 preterm newborns, including 14 with two scans, was studied with MRI, including single-shot fast spin-echo diffusion tensor imaging (DTI) sequence speci...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3181a1fb3d
更新日期:2009-07-01 00:00:00
abstract::The cerebral metabolic effects of hypoglycemia due to intrauterine growth retardation were studied in newborn dogs. Intrauterine growth retardation was induced in newborn dogs after 3 days of maternal nutritional deprivation (birth weight 251 +/- 7 versus 227 +/- 7 g, p less than 0.01). After birth, growth retarded pu...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198811000-00022
更新日期:1988-11-01 00:00:00
abstract::We used quin2, a high affinity fluorescent calcium indicator to measure free cytosolic Ca++ in neutrophils isolated from fresh heparinized blood of 13 cystic fibrosis (CF) patients (age range 6-32 yr) and 11 healthy individuals (age range 25-41 yr) as controls. The mean value of free cytosolic Ca++ for CF patients was...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198519040-00006
更新日期:1985-04-01 00:00:00
abstract::After an initial postnatal diuresis, neonates are in positive sodium balance. Because atrial natriuretic peptide (ANP) contributes to sodium homeostasis, this study was designed to evaluate the maturational effects of increased dietary sodium intake on cardiac ANP production. Preweaned Sprague-Dawley rat pups were art...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199503000-00010
更新日期:1995-03-01 00:00:00
abstract::BackgroundBeing aware of the impact of low birth weight on late-onset hypertension, our aim was to describe systolic blood pressure (sBP) and renal function in 3-5-year-old preterm-born children and to determine which perinatal factors or childhood factors were associated with an altered renal function at 5 years in t...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2017.148
更新日期:2017-12-01 00:00:00
abstract::Skin reflectance in red, green, and blue light was measured at the sternum of 99 Caucasian infants ranging in gestational age from 26 to 44 weeks. Skin reflectance was consistently higher in female infants, but this difference was not statistically significant. Highly significant (P less than 0.001) increases in refle...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197609000-00002
更新日期:1976-09-01 00:00:00
abstract::Premature rabbits delivered by cesarean section at 28 d of gestation were each given intratracheally 75 mg/kg of radiolabeled preparation of either natural rabbit surfactant, natural calf surfactant, or surfactant-TA. Each newborn rabbit was ventilated for up to 6 h in a ventilator-plethysmograph with individual adjus...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198904000-00024
更新日期:1989-04-01 00:00:00
abstract::The metabolism of proteoglycans in normal growth plate and the changes in growth plate morphology induced by diabetes and malnutrition were studied in rats. The proteoglycans had a significantly faster turnover (half-life measured with [35S]sulfate labeling: 25-30 h) than the cells in the growth plate. Morphometric st...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199001000-00014
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND:Biliary atresia (BA) is an infantile disorder characterized by progressive sclerosing cholangiopathy leading to biliary obstruction. First-line treatment of BA is hepatoportoenterostomy, the prognosis of which is related to age at surgery and to histological variables such as extent of fibrosis and ductular ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2013.177
更新日期:2014-01-01 00:00:00
abstract::Phagocytosis of apoptotic cells, e.g., neutrophils, by monocytes is essential for resolution of inflammation. Delayed removal leads to secondary necrosis, perpetuating inflammation, and tissue destruction. Common histologic features in neonatal chronic inflammatory disorders are an accumulation of apoptotic cells in i...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3181b9b470
更新日期:2009-11-01 00:00:00
abstract::The precise mechanism by which the most common cause of bacterial enterocolitis in humans, Campylobacter jejuni, perturbs the intestinal mucosa remains elusive. To define effects of C. jejuni infection on mucosal permeability, Madin-Darby canine kidney (MDCK)-I and T84 cell monolayers were infected with C. jejuni for ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e31818702b9
更新日期:2008-12-01 00:00:00
abstract::We have developed a method for measuring oxygen consumption (Vo2) in preterm infants in their normal incubator environment over prolonged periods. The results of measurements made over 24 h in 18 infants are presented. In normally grown infants, the mean Vo2 was 9.66 +/- 1.25 liters/kg X 24 h (SD) (6.71 +/- 0.87 ml/kg...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198410000-00003
更新日期:1984-10-01 00:00:00
abstract::Tonsillectomy and adenoidectomy (T&A) is a frequent surgical procedure in children with obstructive sleep apnea (OSA). Many symptomatic children who do not fulfill the currently recommended criteria for T&A may benefit from topical intranasal steroid therapy. However, the expression of glucocorticoid receptor (GCR) ex...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000150722.34561.E6
更新日期:2005-02-01 00:00:00
abstract::Critically ill infants are treated with dexamethasone (Dx) and other glucocorticoids to reduce inflammation and to promote lung and cardiac function. The neonatal immune system is immature, so neonatal dendritic cells (DCs) might be especially sensitive to glucocorticoid-mediated immunosuppression. To test this, we co...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000157677.72136.09
更新日期:2005-07-01 00:00:00