Abstract:
:The mononuclear cells of newborn infants compared to those of normal adults contain diminished activity of pyruvate kinase (PK) (14.9 +/- 1.2 vs. 22.3 +/- 1.3 mumol/10(10) cells/min) and phosphoglycerate kinase (PGK) (195 +/- 10 vs. 415 +/- 19). These deficiencies are accentuated in the cells of premature infants (4.9 +/- 0,5 and 71 +/- 15, respectively) and are accompanied by reduced activity of adenylate kinase (AK) (14.8 +/- 1.9 vs. 33.6 +/- 2.6). The activities of AK and PGK in adult and neonatal mononuclear cells are stimulated by phytohemagglutinin (PHA). Although the PK activity of adult cells is stimulated by PHA, the PK activity of neonatal cells is not. Mononuclear cell glycolysis is stimulated by PHA in both adults and neonates. The mean lactate production of neonatal cells is slightly lower than it is in adult cells (93 vs. 110 mumol/10(10) cells/hr, unstimulated, and 151 vs. 181, stimulated), but the differences are not statistically significant. The ATP content of neonatal cells (3.8 +/- 0.4 mumol/ 10(10) cells) is reduced compared to adult values (6.0 +/- 0.3). Lactate production is directly correlated with PK activity in adult and neonatal mononuclear cells. Neonatal mononuclear cell PK activity increases to adult levels during the first year of life.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Das M,Klein W,Feig SAdoi
10.1203/00006450-197710000-00008subject
Has Abstractpub_date
1977-10-01 00:00:00pages
1068-72issue
10 Pt 1eissn
0031-3998issn
1530-0447journal_volume
11pub_type
杂志文章abstract::Diabetes mellitus is characterized by microangiopathy and increased angiogenic response in various organs. Basic fibroblast growth factor (bFGF) as well as vascular endothelial growth factor (VEGF) are both angiogenic and are involved in vascular endothelial cell growth. The purpose of this study was to determine seru...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199812000-00008
更新日期:1998-12-01 00:00:00
abstract::We tested whether reoxygenation with 100% O(2) for 5 min after experimental asphyxia in newborn piglets was as efficient as 100% O(2) for 20 min compared with room air. Forty-one anesthetized piglets, 1-3 d old, were randomized to cerebral hypoxemia-ischemia-hypercapnia (HIH) or control (n = 5). HIH was achieved by ve...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000128978.90201.1D
更新日期:2004-07-01 00:00:00
abstract::Previous studies have reported differences in muscle function and metabolism between patients with cystic fibrosis (CF) and healthy controls (HC), but it is currently unknown whether these abnormalities are specific to CF or also seen in other airway diseases. In this study, we used magnetic resonance spectroscopy (MR...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3181fff35f
更新日期:2011-01-01 00:00:00
abstract::Neonatal group B streptococcal (GBS) sepsis produces pulmonary arterial hypertension and hypoxemia that are preventable by pretreatment with the selective thromboxane A2 synthase inhibitor, dazmegrel. In the present experiment we administered dazmegrel (8 mg/kg) 2 h after the initiation of a 2 1/2 h infusion of 5 X 10...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198804000-00003
更新日期:1988-04-01 00:00:00
abstract::Girls with Turner syndrome (TS) are treated with supraphysiological doses of growth hormone (GH) to improve final height; however in some girls, the growth response can be poor. This may reflect aberrations in GH and/or IGF-I actions at the cellular level, and thus this study compared the response of skin fibroblasts ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e31821b570b
更新日期:2011-07-01 00:00:00
abstract::Naloxone has been shown to reverse the hemodynamic sequelae of experimental septic shock in adult animal models. Its effectiveness in the newborn has not been studied. To further investigate the efficacy of naloxone, we instrumented 18 piglets for continuous measurement of mean arterial pressure, mean pulmonary arteri...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198608000-00001
更新日期:1986-08-01 00:00:00
abstract::Skin fibroblasts derived from 6 patients with cystic fibrosis (CF), 1-6 months old, and from 6 age matched donors were investigated for their ability to accumulate cyclic adenosine 3':5'-monophosphate (c-AMP) in response to isoproterenol and prostaglandin E1 (PGE1) using strictly defined culture conditions. In order t...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198003000-00018
更新日期:1980-03-01 00:00:00
abstract::Intrauterine ligation of the common bile duct was carried out in ten fetal lambs at approximately 80 days gestational age. Six of the fetal lambs survived until term and were sacrificed at varying periods until the 36th day of life. The lesion which developed resembled a "correctable" type of extrahepatic biliary atre...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198005000-00007
更新日期:1980-05-01 00:00:00
abstract::Beta cells are partially replaced in neonatal rodents after deletion with streptozotocin (STZ). Exposure of pregnant rats to a low protein (LP) diet impairs endocrine pancreas development in the offspring, leading to glucose intolerance in adulthood. Our objective was to determine whether protein restriction has a sim...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3181e17c90
更新日期:2010-07-01 00:00:00
abstract::Response characteristics of a transcutaneous PO2 electrode to step changes in PaO2 were determined. In vitro lag time and 95% response time of a transcutaneous PO2 monitor were compared to in vivo response. Release of arterial occlusion was used to produce rapid local PaO2 changes in human infants and adults. In vitro...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198102000-00012
更新日期:1981-02-01 00:00:00
abstract::Cardiac malformations (pulmonary trunk stenosis, ventricular septal defect, and double outlet right ventricle) were induced by the administration of two doses of retinoic acid (RA) to Wistar rats on d 13 of pregnancy. Contractile performance of the isolated perfused rat heart and its inotropic response to Ca2+ (0.6-10...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199512000-00011
更新日期:1995-12-01 00:00:00
abstract::To elucidate the impact of nutrition in cystic fibrosis (CF), we compared the phenotypic traits of Cftr -/- mice fed either a lipid-enriched liquid diet (Peptamen) or a standard chow combined with polyethylenglycol osmotic laxative (PEG), two strategies commonly used to prevent intestinal obstruction in CF mice. Survi...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e318155a61d
更新日期:2007-11-01 00:00:00
abstract::Rats were fed a 50% galactose diet during pregnancy and nursing, and the testes were later examined and hormone levels determined in male offspring. Exposure to galactose for various periods during pregnancy, throughout the entire gestation, or postnatally to nursing mother until pups were 5 wk of age produced no sign...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198404000-00008
更新日期:1984-04-01 00:00:00
abstract::Hyperprostaglandin E syndrome (HPS), the prenatal variant of Bartter's syndrome, is characterized by a marked and selective stimulation of prostaglandin E (PGE2) synthesis. In the study group HPS patients showed increased urinary levels of PGE2, an index of renal, and of 11 alpha-hydroxy-9,15-dioxo-2,3,4,5,20-pentanor...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199708000-00019
更新日期:1997-08-01 00:00:00
abstract::The in vitro incorporation and transport of plasma nonesterified fatty acids into phospholipids of red cell membranes have been studied in cystic fibrosis and healthy children. Red blood cells were labeled in vitro by an active "acyltransferase"-dependent incorporation of radioactively labeled nonesterified fatty acid...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198209000-00011
更新日期:1982-09-01 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::To examine the levels and relationship of blood pressure and insulin during puberty, blood pressure and serum insulin were measured in 3596 subjects, aged 3-18 y, whose pubertal status was graded according to the Tanner classification. The same study protocol was repeated in two follow-up surveys 3 and 6 y later for 2...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1203/00006450-199702000-00019
更新日期:1997-02-01 00:00:00
abstract::The purpose of this study was to determine the effect of chest wall distortion on esophageal manometry by measuring simultaneous esophageal pressure changes at two sites in preterm infants. Fourteen infants were studied (mean +/- SD; birth weight, 1340 +/- 260 g; age, 8.5 +/- 4 d). Esophageal pressure was measured thr...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199505000-00010
更新日期:1995-05-01 00:00:00
abstract::125I-Tyr insulin (125I-Tyr Ins) was injected into the vitelline vein of rat fetuses in utero after 17, 19, or 21 days of gestation. Three min later, the weight and radioactivity of various organs and of the remaining carcass were measured. A radioactivity concentration index (RCI) was calculated by dividing the specif...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198109000-00014
更新日期:1981-09-01 00:00:00
abstract::BACKGROUNDThe aims of this study were to (i) compare the concentrations of two neural injury markers, S100B protein and neuron-specific enolase (NSE), in intrauterine growth-restricted (IUGR) fetuses and in fetuses with appropriate growth-for-gestational-age (AGA), and (ii) investigate potential relationships between ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2017.108
更新日期:2017-09-01 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::Music is widely used to enhance well-being. We wished to assess music's effect on pediatric oncology outpatients. Patients who had leukemia and were in maintenance or consolidation outpatient treatment served as their own control at two visits. At visit 1, children rested for 20 min; at visit 2, for 20 min they listen...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e318174e6fb
更新日期:2008-07-01 00:00:00
abstract:INTRODUCTION:Very early preterm infants (VPIs) are exposed to unpredictable noise in neonatal intensive care units. Their ability to perceive moderate acoustic environmental changes has not been fully investigated. RESULTS:Physiological values of the 598 isolated sound peaks (SPs) that were 5-10 and 10-15 dB slow-resp...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2011.76
更新日期:2012-04-01 00:00:00
abstract::The factors that mediate the postnatal fall in pulmonary vascular resistance, which is crucial for normal gas exchange, are not fully understood. The endothelium has been implicated in this phenomenon, through the release of vasorelaxant factors such as nitric oxide (NO). Human pulmonary expression of endothelial NO s...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1203/01.PDR.0000159575.58834.8D
更新日期:2005-05-01 00:00:00
abstract::We report reference values for osteocalcin and bone and liver alkaline phosphatase (ALP) isoforms in serum from 114 healthy children and adolescents, age 7-16 y. The bone and liver ALP isoforms were measured by high performance liquid chromatography (HPLC). Six ALP isoforms were separated and quantified in all samples...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199512000-00021
更新日期:1995-12-01 00:00:00
abstract::Gluconeogenesis decreases during septic shock, but its mechanism is not well known. Tumor necrosis factor alpha (TNF-alpha), which is a key cytokine in septic shock, can increase GLUT1 gene expression and glucose uptake in muscles and fatty tissues. TNF-alpha does not alter the metabolism of hepatocytes in which GLUT2...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-200104000-00018
更新日期:2001-04-01 00:00:00
abstract::We determined the concentrations of copper, the activities of ceruloplasmin and peptidylglycine alpha-amidating monooxygenase (PAM), and the stimulation index of PAM by the in vitro addition of copper in plasma samples obtained from three male patients with occipital horns and a milder Menkes disease phenotype, having...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199712000-00023
更新日期:1997-12-01 00:00:00
abstract::Amplitude-integrated EEG (aEEG) is used to select patients for neuroprotective therapy after perinatal asphyxia because of its prognostic accuracy within several hours after birth. We aimed to determine the natural course of aEEG patterns during the first 72 h of life, in relation to neurologic outcome, in a group of ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.pdr.0000127019.52562.8c
更新日期:2004-06-01 00:00:00
abstract:INTRODUCTION:Data regarding neonatal arterial ischemic stroke (NAIS) topography are still sparse and inaccurate. Despite the importance of locating NAIS to predict the long-term outcome of neonates, a map of arterial territories is not yet available. Our aim was therefore to generate the first three-dimensional map of ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0724-x
更新日期:2020-06-01 00:00:00
abstract::Prenatal maternal stress has been shown to impair functioning in nonhuman primate offspring. Little is known about the effects of prenatal stress on intellectual and language development in humans because it is difficult to identify sufficiently large samples of pregnant women who have been exposed to an independent s...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000136281.34035.44
更新日期:2004-09-01 00:00:00