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 transcriptional co-activator that affects gene expression of key lipid metabolizing enzymes such as carnitine palmitoyl-transferase I (mCPTI). Because gene expression of lipid metabolizing enzymes is altered in IUGR postnatal skeletal muscle, and we hypothesized that PGC-1 expression would be similarly affected. To prove this hypothesis, bilateral uterine artery ligation and sham surgery were used to produce IUGR and control rats respectively. Western Blotting demonstrated that PGC-1 hind limb skeletal muscle protein levels were increased in perinatal and postnatal IUGR rats. Conventional RT-PCR demonstrated that PGC-1 mRNA levels were similarly increased in perinatal hind limb skeletal muscle and juvenile extensor digitorum longus (EDL), but were decreased in juvenile soleus. Because a gender specific trend was noted in PGC-1 mRNA levels, real time RT-PCR was used for further differentiation. Real time RT-PCR revealed that changes in postnatal skeletal muscle PGC-1 expression were more marked in male IUGR rats versus female IUGR rats. Down stream targets of PGC-1 followed a similar pattern of expression. We conclude that PGC-1 expression is altered in rat IUGR skeletal muscle and speculate that it contributes to the pathogenesis of insulin resistance in the IUGR rat.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Lane RH,Maclennan NK,Daood MJ,Hsu JL,Janke SM,Pham TD,Puri AR,Watchko JFdoi
10.1203/01.PDR.0000064583.40495.51subject
Has Abstractpub_date
2003-06-01 00:00:00pages
994-1000issue
6eissn
0031-3998issn
1530-0447pii
01.PDR.0000064583.40495.51journal_volume
53pub_type
杂志文章abstract::The objective of this study was to determine the plasma leptin concentrations in twin pregnancies in relation to chorionicity and discordant fetal growth. We studied 53 twin pregnancies of which 26 had growth discordance of > or =20% and 27 were concordant for growth (discordance of < or =10%). Paired maternal and fet...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-200105000-00010
更新日期:2001-05-01 00:00:00
abstract:BACKGROUND:Near-infrared spectroscopy (NIRS) is an upcoming clinical method for monitoring regional cerebral oxygen saturation (rScO2) in neonates. There is a growing market offering different devices and sensors. Even though this technique is increasingly clinically applied, little is known about the similarities and/...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2013.133
更新日期:2013-11-01 00:00:00
abstract::Catecholamines (CA) are released from and resynthesized in the adrenal medulla in response to stress. In the mature animal, stimulus-secretion-synthesis coupling occurs through transsynaptic (neuronal) activity. In contrast, in the immature animal, before functional adrenal innervation, certain stressors (hypoglycemia...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199412000-00006
更新日期:1994-12-01 00:00:00
abstract::Preterm infants are prone to abnormal bacterial colonization of the intestine with ensuing adverse health effects. To examine whether the oral application of Bifidobacterium lactis Bb12 (probiotic) may improve selected indicators of health status in preterm infants, a double blind, placebo controlled randomized clinic...
journal_title:Pediatric research
pub_type: 杂志文章,随机对照试验
doi:10.1203/PDR.0b013e318181b7fa
更新日期:2008-10-01 00:00:00
abstract::Platelet-activating factor (PAF) has been implicated in the pathogenesis of gastrointestinal diseases such as necrotizing enterocolitis, Crohn's disease, and ulcerative colitis. However, neither the physiologic role of PAF in the intestine, nor the mechanisms by which PAF participates in the pathogenesis of disease ar...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-200208000-00005
更新日期:2002-08-01 00:00:00
abstract::Based on the serum phenylalanine levels under free diet patients with hyperphenylalaninemia are classified as "classical" (>1200 micromol/L), "mild" (600-1200 micromol/L), or "non-phenylketonuria (PKU)-hyperphenylalaninemia" (<600 micromol/L). Recent studies revealed intellectual, neurologic, and neuropsychologic defi...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199709000-00020
更新日期:1997-09-01 00:00:00
abstract::BackgroundPregnant women at a high risk of preterm delivery receive glucocorticoids to accelerate fetal lung maturation and surfactant synthesis. However, the effect of antenatal steroids on the developing diaphragm remains unclear. We hypothesized that maternal betamethasone impairs the fetal diaphragm, and the magni...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2017.99
更新日期:2017-09-01 00:00:00
abstract::The age-related changes in fasting arterial levels of energy substrates and insulin were studied at birth and/or 6 wk in eleven baboon infants. In addition, the renal contribution to glucose release in the primate infant was estimated. Arterial blood glucose levels were similar in six fasted newborns and in nine faste...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198008000-00006
更新日期:1980-08-01 00:00:00
abstract::Injuries continue to be the leading cause of morbidity and mortality for children, adolescents, and young adults aged 1-24 years in industrialized countries in the twenty-first century. In this age group, injuries cause more fatalities than all other causes combined in the United States (U.S.). Importantly, many of th...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1038/s41390-019-0549-7
更新日期:2020-01-01 00:00:00
abstract::The interrelationship of 2,3-diphosphoglycerate (2,3-DPG) and P50 levels during the fetal and postnatal life were determined in two mammalian species which do not have a switchover of hemoglobin type at the end of their fetal development. In the guinea pig and rabbit, the 2,3-DPG levels remain low during fetal life an...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197903000-00006
更新日期:1979-03-01 00:00:00
abstract::Ambient oxygen concentration and vascular endothelial growth factor (VEGF)-A are vital in lung development. Since hypoxia stimulates VEGF-A production and hyperoxia reduces it, we hypothesized that VEGF-A down-regulation by exposure of airways to hyperoxia may result in abnormal lung development. An established model ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e31815b4857
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Animal models have shown that insulin-like growth factor I (IGF-I) may mediate protein-induced kidney growth. Our aim was to analyze the effect of IGF-I on protein-induced kidney growth in healthy infants. METHODS:This is a secondary analysis of a randomized trial that compared growth of infants fed with a ...
journal_title:Pediatric research
pub_type: 杂志文章,随机对照试验
doi:10.1038/pr.2013.87
更新日期:2013-08-01 00:00:00
abstract::Few data exist regarding resuscitation of hypovolemic shock in infants, and alternative strategies such as vasopressor therapy merit further evaluation. However, the effects of norepinephrine on cerebral perfusion and oxygenation during hemorrhagic shock in the pediatric population are still unclear. Eight anesthetize...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3181425858
更新日期:2007-10-01 00:00:00
abstract::We have shown previously that polynucleotides enhance in vitro antibody and Ig production in response to T-dependent antigens in mice and augment Ig production by adult human peripheral blood mononuclear cells. Herein, we report their effects on umbilical cord blood mononuclear cells (CBMNC) obtained from full-term ba...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199311000-00003
更新日期:1993-11-01 00:00:00
abstract::Groups of newborn rats were transthoracically inoculated with 1 X 10(6) type III group B streptococci/g body wt, either alone or in combination with 1.5 microgram/g body wt of type-specific antibody derived from hybridoma cell lines. Ninety-four percent of the animals who received bacteria alone died. In contrast, non...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198310000-00005
更新日期:1983-10-01 00:00:00
abstract::Blue and white phototherapy was given to infant (and weanling) homozygous Gunn rats treated with different doses of riboflavin-5-phosphate (ribofl.5'p.) During the first hours after a flavin-injection, the effect of phototherapy with both types of fluorescent lamps was enhanced. With equal radiant power applied, the s...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197912000-00001
更新日期:1979-12-01 00:00:00
abstract::Stimulation of cutaneous thermoreceptors may be an important factor in the initiation of continuous breathing at birth. Maintenance of a patent airway is also important in the continuation of effective ventilation after birth, but whereas in the adult the principal pharyngeal dilator is the genioglossus muscle, in the...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198803000-00005
更新日期:1988-03-01 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::Permeability of the blood brain barrier (BBB) for bilirubin and 125I-albumin was studied in 2-d- and 2-wk-old piglets. 125I-albumin was given by bolus at the beginning of each study. Hyperbilirubinemia was produced by an initial bolus infusion of bilirubin and sustained at a plasma bilirubin:albumin molar ratio of app...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198905000-00005
更新日期:1989-05-01 00:00:00
abstract::Two infants with disorders of propionate metabolism were studied at 7 months of age to determine optimum levels of intake of protein and calories to meet the requirements for essential amino acid for growth in infancy, and at the same time minimize the accumulation of toxic intermediates. An effect of alanine was foun...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198501000-00023
更新日期:1985-01-01 00:00:00
abstract::Blood mononuclear cells from newborns and from adults, immune or nonimmune to herpes simplex virus, were cultured with IL 2 and herpes simplex virus and the amount of gamma-interferon in the supernatant measured after 3 days. The newborn and nonimmune adult cells made equivalent trace amounts of gamma-interferon in cu...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198605000-00004
更新日期:1986-05-01 00:00:00
abstract::The objective of this study was to obtain insight into bone formation and resorption in children with newly diagnosed untreated acute lymphoblastic leukemia (ALL). In 23 consecutive children with ALL, a bone biopsy was taken from the crista iliaca posterior under ketamine anesthesia, together with the diagnostic marro...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000090929.16450.DE
更新日期:2003-12-01 00:00:00
abstract::Brain injury remains one of the major unsolved problems in neonatal care, with survivors at high risk of lifelong neurodisability. It is unlikely that a single intervention can ameliorate neonatal brain injury, given the complex interaction between pathological processes, developmental trajectory, genetic susceptibili...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1038/s41390-019-0729-5
更新日期:2019-12-18 00:00:00
abstract::We investigated the role of circulating bone marrow cells (BMC) in cardiomyocyte regeneration. BMC, isolated from transgenic mice expressing enhanced green fluorescent protein (GFP), were transplanted into lethally irradiated C57BL6 mice. Five weeks after bone marrow transplantation (BMT), flow cytometric analysis for...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000078275.14079.77
更新日期:2003-09-01 00:00:00
abstract::Tanshinone IIA is a compound purified from the Chinese herb Danshen (Radix Salviae Miltiorrhiza Bge). The neuroprotective effect of tanshinone IIA was investigated in a neonatal rat model of hypoxia-ischemia brain damage. Hypoxia-ischemia encephalopathy was induced in rats at day 7 of postnatal age by ligation of the ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000180550.99162.BC
更新日期:2005-10-01 00:00:00
abstract:INTRODUCTION:Infection is a risk factor for adverse neurodevelopmental outcome in preterm newborns. Our objective was to characterize the association of postnatal infection with adverse microstructural and metabolic brain development in premature newborns. RESULTS:In 34/117 newborns studied, clinical signs were accomp...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2011.40
更新日期:2012-03-01 00:00:00
abstract::This work examines the dynamic surface pressure-area behavior of films of unconjugated bilirubin spread from chloroform solution at 22 degrees C on 0.15 M NaCl and buffered phosphate subphases. Film behavior is examined at pH 5.5, 7.4 and 8.0. The interactions of bilirubin in mixed films with dipalmitoyl phosphatidylc...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198202000-00011
更新日期:1982-02-01 00:00:00
abstract::Low IGF-I levels are found in patients with chronic liver disease, but it is not known whether these reductions in IGF-I are secondary to hepatic dysfunction or to malnutrition. To determine whether malnutrition associated with hepatic dysfunction causes the decrease in these levels, serum and liver IGF-I concentratio...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198911000-00009
更新日期:1989-11-01 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::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