Abstract:
BACKGROUND:To understand the increased susceptibility of preterm neonates to infection. METHODS:A murine listeriosis model using immunohistochemistry, microarray technology, and real-time polymerase chain reaction (PCR). RESULTS:We report that recombinant serum amyloid A (SAA) administered prophylactically 18 h before intraperitoneal (i.p.) inoculation with Listeria monocytogenes conferred a dramatic survival benefit compared with administration of only vehicle in neonatal mice. Neonates that received the recombinant SAA protein had significantly fewer Listeria colony counts on plating of infected liver and showed significantly more activated macrophages, but SAA did not affect postnatal growth. Real-time PCR was used to confirm the microarray findings that gene expression levels for the SAA proteins 1 (Saa1) and 2 (Saa2), in addition to that for orosomucoid-2 (Orm2), were strikingly elevated in the adult compared with those in the neonate. Real-time PCR analysis showed that of the acute phase cytokines, tumor necrosis factor (TNF) gene expression increased exponentially with time in the infected adult, whereas neonates did not show similar increases. CONCLUSION:The increased susceptibility of neonatal mice to listeriosis is in part mediated by a deficiency in the acute phase response, specifically expression of SAA, and that prophylactic SAA protein before neonatal murine listeriosis results in more macrophage activation, lower Listeria counts, and greater survival.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Hawkins JS,Wu Q,Wang Y,Lu CYdoi
10.1038/pr.2013.164subject
Has Abstractpub_date
2013-12-01 00:00:00pages
668-74issue
6eissn
0031-3998issn
1530-0447pii
pr2013164journal_volume
74pub_type
杂志文章abstract::Pyritinol-HCl was tested for its impact on the cognitive functions of children with learning disabilities. This study is a contribution to scientific discussion on the complicated methodologic problems in evaluating the clinical efficacy of psychopharmacologic agents. Sixty-seven pupils of slow learner classes between...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章
doi:10.1203/00006450-197509000-00006
更新日期:1975-09-01 00:00:00
abstract::We have previously demonstrated that vagal phase-response curves (PRC), which characterize the effects of critically timed, brief vagal stimuli on sinus node automaticity, exhibit a fundamentally different shape in the canine newborn than in the adult. In this study we analyzed the changes in sinus cycle length in res...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199401000-00013
更新日期:1994-01-01 00:00:00
abstract::The functional activity of naturally acquired IgG and IgM with specificity for the capsular polysaccharide of type III, group B Streptococcus (III-GBS) was compared. Sera collected during convalescence from 14 infants who had developed specific antibodies following III-GBS infection were employed for separation of IgG...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198801000-00007
更新日期:1988-01-01 00:00:00
abstract::The role of microbial colonization is indispensable for keeping a balanced immune response in life. However, the events that regulate the establishment of the microbiota, their timing, and the way in which they interact with the host are not yet fully understood. Factors such as gestational age, mode of delivery, envi...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1038/pr.2015.54
更新日期:2015-06-01 00:00:00
abstract::Data are scarce regarding mineral bioavailability from human milk in older infants who may also be receiving solid foods (beikost). We measured the absorption of Ca, Zn, and Fe in 14 healthy, nonanemic 5-7-mo-old breast-fed infants whose mothers milk was extrinsically labeled with stable isotopes (44Ca, 70Zn, and 58Fe...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章
doi:10.1203/00006450-199703000-00014
更新日期:1997-03-01 00:00:00
abstract::Data are scant regarding the development of cerebrovascular autoregulation in intrauterine growth-restricted (IUGR) newborns. We tested the hypothesis that IUGR improves the ability of neonates to withstand critical periods of gradual hemorrhagic hypotension by optimizing cerebrovascular autoregulation. Studies were c...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000139425.94975.77
更新日期:2004-10-01 00:00:00
abstract::Very preterm infants developing bronchopulmonary dysplasia frequently show a compromised growth in the neonatal period especially when steroids are given to facilitate weaning from the ventilator. The aim of this study was to evaluate the short-term effect of dexamethasone (DEXA) on the GH-IGF axis in ventilated very ...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章
doi:10.1203/01.PDR.0000065727.45195.69
更新日期:2003-07-01 00:00:00
abstract::We investigated the relative contribution of the two pathways of phosphatidylcholine (PC) synthesis in lungs from chick embryos of 12 to 20 days of incubation as well as from hatched chicks and adult chickens. Lung "blocks" were incubated for 60 min in vitro in the presence of [3H]methionine and [14C]choline. PC was s...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198105000-00008
更新日期:1981-05-01 00:00:00
abstract::Insulin treatment of prepubertal children with insulin-dependent diabetes improves body protein balance by decreasing the rate of protein degradation without stimulating protein synthesis. However, insulin also causes hypoaminoacidemia, so the inability of insulin to stimulate protein synthesis may have been limited b...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000169976.20029.64
更新日期:2005-08-01 00:00:00
abstract::Studies were conducted in an attempt to determine the hemolytic potential of acetylsalicylic acid (ASA) on normal intact red blood cells (RBCs). ASA (25 mg/100 ml) did not impair RBC G-6-PD, glutathione peroxidase or catalase activity, glutathione stability, or hexose monophosphate shunt activity. Hemolysis was not ob...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197809000-00009
更新日期:1978-09-01 00:00:00
abstract::The relationship between the development of cytotoxic cellular immune response to herpes simplex virus type I (HSV-1)-infected autologous cells and the production of interferon (IFN) was studied using in vitro secondary sensitization of peripheral blood leukocytes in subjects with recurrent herpes labialis (RHL) and i...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198609000-00020
更新日期:1986-09-01 00:00:00
abstract::This study tested the hypothesis that the sexually dimorphic adrenocortical response to stress is already established before birth. Chronically instrumented late gestation pregnant sheep carrying 16 male and 15 female age-matched singleton fetuses were subjected to an acute episode of hypoxic stress. Maternal and feta...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3182042a20
更新日期:2011-02-01 00:00:00
abstract:BACKGROUND:Later life metabolic dysfunction is a well-recognized consequence of being born small for gestational age (SGA). This study has applied metabolomics to identify whether there are changes in these pathways in prepubertal short SGA children and aimed to compare the intracellular and extracellular metabolome in...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2016.72
更新日期:2016-08-01 00:00:00
abstract:BACKGROUND:Bicuspid aortic valve (BAV) is the most common type of congenital heart disease (CHD) and has a proposed genetic etiology. BAV is categorized by cusp fusion, with right-left (R-L) cusp fusion being associated with additional CHD, and right-noncoronary cusp (R-NC) fusion being associated with aortic valve dys...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2014.67
更新日期:2014-08-01 00:00:00
abstract::The microbiome, of which the bacterial component alone (microbiota), is estimated to include 10 times more cells than human cells of the body, blooms immediately after birth and evolves in composition and complexity throughout childhood. The gut microbiome has a profound impact on gastrointestinal tract development, m...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1038/pr.2014.162
更新日期:2015-01-01 00:00:00
abstract::The effect of Cis-platin on the glomerular filtration rate and effective renal plasma flow was determined using a radioisotope clearance technique in young (3 wk old) and adult (more than 12 wk old) rats. Cis-platin was administered intravenously in dosages ranging from 2.5 to 10 mg/kg body weight, either as a single ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198601000-00003
更新日期:1986-01-01 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::Because minimal information is available about surfactant metabolism in bronchopulmonary dysplasia, we measured half-lives and pool sizes of surfactant phosphatidylcholine in very preterm baboons recovering from respiratory distress syndrome and developing bronchopulmonary dysplasia, using stable isotopes, radioactive...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-200211000-00019
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Histomorphometry of endomyocardial biopsies is one component of arrhythmogenic right ventricular cardiomyopathy (ARVC) diagnosis, although there is a need for stricter diagnostic criteria for this disease in pediatrics. The clinical utility of biopsy analysis as a component of ARVC diagnosis was evaluated in...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-018-0093-x
更新日期:2018-10-01 00:00:00
abstract::A study using fractional clearances during orally induced water diuresis was designed to delineate the mechanism underlying defective tubular reabsorption of sodium in very low-birth-weight neonates. The use of clearance methodology during maximal water diuresis may give an indirect estimate of distal sodium delivery ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198312000-00017
更新日期:1983-12-01 00:00:00
abstract:INTRODUCTION:Dietary fish oil (FO) was reported to lower fecal fat excretion in a weanling rat model of short bowel syndrome (SBS) after ileocecal resection (ICR), and to induce changes in secretion and synthesis of bile acid (BA) in adults. We hypothesized that dietary FO, as compared with corn oil (CO), increases int...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2012.41
更新日期:2012-07-01 00:00:00
abstract:BACKGROUND:Cardiovascular instability immediately after birth is associated with intraventricular hemorrhage (IVH) in very-low-birth-weight (VLBW) infants. For circulatory management, evaluation of organ blood flow is important. In this study, the relationship between peripheral perfusion within 48 h after birth and IV...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2013.215
更新日期:2014-02-01 00:00:00
abstract::In eight newborn lambs, the adaption of blood to acidosis was studied by sequential measurements of P50 in vitro (pH 7.4; 37 degrees C) and P50 in vivo (animal's pH and temperature, 39 degrees C) during the course of HCl-induced metabolic acidosis. The benefit of the change in both P50 on tissue oxygen tension was stu...
journal_title:Pediatric research
pub_type: 杂志文章
doi:
更新日期:1981-05-01 00:00:00
abstract::Uteroplacental insufficiency and subsequent intrauterine growth retardation (IUGR) increase the risk of insulin resistance in humans and rats. Aberrant skeletal muscle lipid metabolism contributes to the pathogenesis of insulin resistance. Peroxisome proliferator-activated receptor-gamma co-activator-1 (PGC-1) is a tr...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000064583.40495.51
更新日期:2003-06-01 00:00:00
abstract::Cerebral malaria is the most severe neurological complication of infection with Plasmodium falciparum. With >575,000 cases annually, children in sub-Saharan Africa are the most affected. Surviving patients have an increased risk of neurological and cognitive deficits, behavioral difficulties, and epilepsy making cereb...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1203/PDR.0b013e3181eee738
更新日期:2010-10-01 00:00:00
abstract::The syndrome of hypoxemia-related myocardial dysfunction in the newborn is generally associated with severe intrapartum asphyxia. We investigated the changes in total and regional distribution of myocardial blood flow (MBF) that occur during asphyxia and the factors that regulate MBF, in the chronically prepared, near...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198408000-00019
更新日期:1984-08-01 00:00:00
abstract:BACKGROUND:No study has examined the association between prenatal phthalate exposure and intrauterine growth retardation (IUGR). This study aimed to investigate whether prenatal exposure to phthalates was associated with increased risk of IUGR. METHODS:A total of 126 mother-newborn pairs, including 42 IUGR cases and 8...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2014.103
更新日期:2014-10-01 00:00:00
abstract::Previous studies in adults have shown that chronic pulmonary hypertension is associated with decreased endothelial nitric oxide synthase (eNOS) expression in pulmonary arteries. However, the role of decreased eNOS expression in persistent pulmonary hypertension of the newborn (PPHN) is unknown. We investigated the hyp...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199809000-00012
更新日期:1998-09-01 00:00:00
abstract::Chondro-osseous tissue from five patients with diastropic dwarfism was studied by histologic, histochemical, and electron microscopic methods. The major abnormalities observed were: 1) irregular distribution of chondrocytes undergoing degeneration in the resting cartilage; 2) abnormal distribution of collagens in the ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197908000-00007
更新日期:1979-08-01 00:00:00
abstract:INTRODUCTION:Current advances in neonatology have improved survival among preterm and low-birth-weight infants. However, the risk of neonatal death in preterm infants is much greater than in full-term neonates and is frequently associated with infections. METHODS:Little is known about the immune status of preterm neon...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2012.6
更新日期:2012-05-01 00:00:00