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 studies showed significant reductions of cell number, zone height, and [3H]thymidine incorporation in growth plates from rats with untreated streptozotocin-induced diabetes compared to normal rats. Similar, although less pronounced alterations were observed in malnourished, nondiabetic rats. Disaggregation and degradation of proteoglycans are probably necessary prerequisites for calcification. Our data indicate that the proteoglycans are in a dynamic state of rapid biosynthesis and degradation throughout the growth plate with a shift in the balance at the calcification front toward less synthesis and more degradation.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Axelsson I,Pita JC,Howell DS,Lorentzon R,Berman I,Boquist Ldoi
10.1203/00006450-199001000-00014subject
Has Abstractpub_date
1990-01-01 00:00:00pages
41-4issue
1eissn
0031-3998issn
1530-0447journal_volume
27pub_type
杂志文章abstract::Cell-mediated immunity is not well characterized in very low birth weight infants, and abnormalities may represent a significant vulnerability to infection. This report describes 165 serial studies in 58 infants between 700 and 1300 g birth weight during the first 8 wk of life. Two ml of blood were drawn at 2-wk inter...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198805000-00003
更新日期:1988-05-01 00:00:00
abstract::A 10-year longitudinal study was conducted on 16 prepubescent youngsters who had undergone successful weight reduction. Their ages ranged from 2 to 10 years when the study began. In all subjects, weight reduction proceeded only by a decrease in adipose cell size (from 0.62 +/- 0.02 to 0.46 +/- 0.02 micrograms lipid pe...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198110000-00016
更新日期:1981-10-01 00:00:00
abstract:BACKGROUND:There is a strong need for continuous cerebral circulation monitoring in neonatal care, since suboptimal cerebral blood flow may lead to brain injuries in preterm infants and other critically ill neonates. NeoDoppler is a novel ultrasound system, which can be gently fixed to the anterior fontanel and measure...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0535-0
更新日期:2020-01-01 00:00:00
abstract::Human milk was fractionated to obtain a partially purified growth factor preparation. The growth factor in this fraction, designated as human milk growth factor III, exhibits chromatographic and biological characteristics similar to epidermal growth factor-urogastrone. Pretreatment of mice with human milk growth facto...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198509000-00009
更新日期:1985-09-01 00:00:00
abstract::The use of erythrocyte entrapment as a strategy to deliver and protect exogenously administered enzymes for replacement therapy in selected genetic diseases has been evaluated in a mammalian model system. The uptake, tissue distribution, intracellular localization, and in vivo lifetime of erythrocyte-entrapped bovine ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197512000-00011
更新日期:1975-12-01 00:00:00
abstract::To determine the pathophysiologic significance of pertussis toxin (PT) on the human beta-adrenergic system, beta-adrenoceptor (beta-R)-density and cyclic AMP response of peripheral mononuclear blood cells (MN leukocytes) were studied in children during the paroxysmal stage of natural pertussis infection, after vaccina...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198902000-00026
更新日期:1989-02-01 00:00:00
abstract::Surfactant-associated proteins (SP-A, SP-B, and SP-C) are critical for the endogenous function of surfactant. Keratinocyte growth factor (KGF) and vascular endothelial growth factor (VEGF) are key regulators of lung development. The objective of this study was to evaluate the effects of early mechanical ventilation on...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3181256aeb
更新日期:2007-09-01 00:00:00
abstract::A longitudinal study describes the pattern of appearance of eight primitive reflexes in a population of 47 viable extremely premature infants, beginning as early as 25 wk postconceptional age (PCA). Infants were examined weekly, from 1 wk of age until discharge from the neonatal intensive care unit. Primitive reflexes...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198612000-00018
更新日期:1986-12-01 00:00:00
abstract::To study cardiovascular autonomic control, we assessed the effect of atropine on heart rate (HR) and blood pressure (BP) variability in 12 preterm infants (range 26-32 wk) before intubation for respiratory insufficiency. Spectral power analysis of R-R interval and systolic BP (SBP) series were estimated in a low-frequ...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章
doi:10.1203/01.PDR.0000145257.75072.BB
更新日期:2004-12-01 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::The response of cerebral blood volume (CBVR) to a small induced change in arterial carbon dioxide tension was studied by near-infrared spectroscopy in 17 newborn infants born from 26 wk of gestation to term. All 17 infants were undergoing mechanical ventilation but had apparently normal brains. The CBVR per kPa change...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199106010-00007
更新日期:1991-06-01 00:00:00
abstract::Pathomechanisms involved in obstructive apneas remain obscure. Apnea arousal failure has been proposed as a cause for sudden death during sleep. The present study hypothesizes an interdependency between upper airway dilating submental muscle electromyogram (EMG) activity (EMGsub), diaphragmatic muscle activity (EMGdia...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199509000-00005
更新日期:1995-09-01 00:00:00
abstract::Both severe impairments of brain development in untreated infants and acute reversible neurotoxic effects on brain function are clinical features of phenylketonuria (PKU). For determining whether impairments of cerebral energy metabolism play a role in the pathophysiology of PKU, quantitative in vivo 31P magnetic reso...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000055867.83310.9E
更新日期:2003-04-01 00:00:00
abstract::We banded the trachea of 4-wk-old male rats and studied lung growth, lung morphometry, and static pulmonary mechanics 4 wk later. We compared the experimental animals to sham-operated male littermates of the same age, 8-wk-old normal male littermates, and weight-matched rats of a younger age. Tracheal banded animals w...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198103000-00014
更新日期:1981-03-01 00:00:00
abstract::This study was conducted to investigate myocardial excitation-contraction coupling in the fetus of the diabetic rabbit (FDM). On day 14 of gestation, diabetes was induced in pregnant rabbits by alloxan injection. On day 28 of gestation, mechanical function of the fetal myocardium was determined in the isolated arteria...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198412000-00026
更新日期:1984-12-01 00:00:00
abstract::This investigation was undertaken to determine the nature of acute alterations in renal function following the production of hypoxemia, hypercarbia, and acidosis in newborn piglets 6-96 hr of age. After completion of the surgical procedure piglets were allowed to recover from the effects of anesthesia. When respirator...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197803000-00013
更新日期:1978-03-01 00:00:00
abstract::The purpose of the study was to investigate the effect of low doses of dopamine in children. Fourteen cases were studied after open heart surgery. Cardiac output and renal parameters were determined under baseline conditions and under continuous infusion of dopamine 2.5 and 5 micrograms/kg/min. During the control peri...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198909000-00009
更新日期:1989-09-01 00:00:00
abstract::Sparse-fur mice, 28 d of age with the x-chromosomal inherited defect of ornithine carbamoyltransferase, were used to investigate if tryptophan and the serotonin pathway in the brain are affected in this animal model which closely resembles the human inborn error of metabolism. Increased concentrations of tryptophan an...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198404000-00014
更新日期:1984-04-01 00:00:00
abstract::Superoxide anion generation during severe asphyxia and reventilation was assessed in newborn pigs. Using closed cranial windows over the parietal cortices, superoxide dismutase (SOD)-inhibitable nitroblue tetrazolium (NBT) reduction was determined during asphyxia/reventilation. Asphyxia was induced by turning off the ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199012000-00015
更新日期:1990-12-01 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::Prenatal exposure to infection and subsequent inflammatory responses have been implicated in the etiology of schizophrenia and autism. In this review, we summarize current evidence from human and animal studies supporting the hypothesis that the pathogenesis of these two disorders is linked via exposure to inflammatio...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1203/PDR.0b013e318212c196
更新日期:2011-05-01 00:00:00
abstract:INTRODUCTION:The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) serves 50% of infants and 25% of preschool-aged children in the United States and collects height and weight measurements from eligible children every 6 mo, making WIC data a valuable resource for studying childhood growth an...
journal_title:Pediatric research
pub_type: 杂志文章,多中心研究
doi:10.1038/pr.2011.37
更新日期:2012-03-01 00:00:00
abstract::The mitochondrial DNA (mtDNA) point mutation T8993G has been associated with maternally inherited Leigh syndrome (MILS) when very abundant (> 95%). MILS patients are usually severely affected and die in early infancy. In 1993, a novel T8993C point mutation was described in a juvenile form of Leigh syndrome (LS) charac...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199605000-00028
更新日期:1996-05-01 00:00:00
abstract::In dissociated whole brain cell cultures from newborn mice, we have previously shown that during glucose deprivation under normoxia, D-beta-hydroxybutyrate and oleic acid are increasingly used for energy production. We now asked whether this glucose dependency of the utilization of D-beta-hydroxybutyrate and oleic aci...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198911000-00023
更新日期:1989-11-01 00:00:00
abstract::Cerebral magnetic resonance imaging (MRI) has revealed white matter changes in patients with phenylketonuria (PKU), an inborn error of metabolism with increased plasma phenylalanine level. Because the significance of these lesions is unknown, this study was undertaken to determine whether glucose metabolism was depres...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199607000-00004
更新日期:1996-07-01 00:00:00
abstract::Matrix metalloproteinases (MMP) are likely effectors of normal lung development, especially branching morphogenesis, angiogenesis, and extracellular matrix degradation. Because hyperoxia exposure (>95% O(2)) from d 4 to 14 in newborn rat pups leads to arrest of alveolarization and mimics newborn chronic lung disease, ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000130658.45564.1F
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:Neonatal haemorrhaging is often co-observed with thrombocytopenia; however, no evidence of a causal relationship with low platelet count has been reported. Regardless, the administration of a platelet transfusion is often based upon this parameter. Accurate measurement of platelet function in small volumes o...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0316-9
更新日期:2019-05-01 00:00:00
abstract::Hypercholesterolemia is common in preterm infants administered 10% Intralipid perhaps because of excess phospholipid in plasma causing efflux of cholesterol from tissues. The purpose of this study was to determine if cholesterol synthesis (as measured by plasma lathosterol) is increased in preterm infants (23-32 wk ge...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199202000-00020
更新日期:1992-02-01 00:00:00
abstract::We examined the effect of inspiratory resistive loaded breathing (IRL) on the electromyographic (EMG) activity of the costal and crural diaphragm in nine anesthetized spontaneously breathing piglets (age 10-23 days, weight 2.8-4.4 kg). Bipolar wire electrodes were inserted into the anterior paratendinous costal diaphr...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198701000-00007
更新日期:1987-01-01 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