Abstract:
:The purpose of the present study was to determine if autoregulation of cerebral blood flow (CBF) is present in the preterm fetal lamb and, if present, to measure the range of mean arterial blood pressure over which autoregulation exists. Thirty-seven measurements of CBF were made in seven preterm fetal lambs (118-122 days gestation) over a mean carotid arterial blood pressure (CBP) range of 18-90 mm Hg. CBF was measured by the radionuclide-labeled microsphere technique. CBP was altered by graduated inflation of balloons placed around the brachiocephalic trunk and the aortic isthmus. To eliminate the effects of reflex changes in heart rate, the carotid sinus and aortic nerve were ablated bilaterally. CBF was linearly related to mean CBP from 18-45 mm Hg, constant over a mean CBP of 45-80 mm Hg, and again linear from 80-90 mm Hg. Resting mean CBP (normotension) was 53.8 +/- 1.9 mm Hg during the control period and 51.7 +/- 0.8 mm Hg during the equilibration periods. This study demonstrates that although autoregulation of CBF is intact in the preterm fetal lamb, the range is narrowed compared to the term lamb and resting mean CBP lies close to the lower limit of autoregulation.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Papile LA,Rudolph AM,Heymann MAdoi
10.1203/00006450-198502000-00001subject
Has Abstractpub_date
1985-02-01 00:00:00pages
159-61issue
2eissn
0031-3998issn
1530-0447journal_volume
19pub_type
杂志文章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::Several markers of growth and biochemical development in the rat were studied after administration of prostacyclin (PGI2) and 16, 16-dimethyl prostaglandin E2 (16, 16DM PGE2). Intermittent administration of PGI2 for 3 days to 10- and 19-day-old animals, with subsequent sacrifice at 14 and 23 days, resulted in signific...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198307000-00004
更新日期:1983-07-01 00:00:00
abstract::We used in vivo microdialysis to determine the impact of a focal hypoxic-ischemic insult on hippocampal amino acid efflux in the immature brain. Microdialysis probes were inserted into the right hippocampus of postnatal d 7 rats. To induce hypoxic-ischemic injury, the right carotid artery was ligated and animals were ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199112000-00021
更新日期:1991-12-01 00:00:00
abstract::Ventilation of immature airways has been shown to result in pressure-induced deformation and alteration of mechanical properties. These changes in mechanical properties may alter the effect of compressive pressures on pressure-flow relationships. To test this hypothesis, unventilated (Group I, n = 8) and ventilated (g...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198805000-00017
更新日期:1988-05-01 00:00:00
abstract:BACKGROUND:Adolescents born preterm have altered hypothalamic-pituitary-adrenal axis function with a blunted cortisol stress response, however, the influences of intrauterine growth restriction and race are unclear. METHODS:We measured salivary cortisol before and 20 min after a maximal-exercise stress test and calcul...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0682-3
更新日期:2020-05-01 00:00:00
abstract::Exercise-induced arterial hypoxemia (EIAH) is a recognized phenomenon in highly trained adults. Like adult athletes, prepubescent trained children may develop high-level metabolic demand but with a limited lung capacity in comparison with adults. The purpose of this investigation was to search for evidence of EIAH in ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000114481.58902.FB
更新日期:2004-04-01 00:00:00
abstract::The worldwide burden of disease due to Epstein-Barr virus (EBV) infection is enormous. Diseases include endemic Burkitt lymphoma, infectious mononucleosis, cancers after transplantation, Hodgkin lymphoma, and nasopharyngeal carcinoma. A prophylactic EBV vaccine has the potential to significantly reduce the incidence a...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1038/s41390-019-0591-5
更新日期:2020-01-01 00:00:00
abstract:BACKGROUND:Physical activity (PA) is essential for children throughout their growth and maturation. It improves physiological and psychological health and limits the risk of developing metabolic disorders. However, some chronic physiological and metabolic diseases may lead to decreased PA. The diversity of outcomes in ...
journal_title:Pediatric research
pub_type: 杂志文章,meta分析
doi:10.1038/s41390-019-0409-5
更新日期:2019-08-01 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 effect of ingestion of uncooked cornstarch (2 g/kg body weight) in water, uncooked starch (1 g/kg) added to a meal, and glucose (2 g/kg) in water, was studied in eight patients with type IA glycogen storage disease (GSD) and one patient with type IB GSD. Blood glucose concentrations were determined at 30-min inter...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198409000-00015
更新日期:1984-09-01 00:00:00
abstract::Inflammatory phenomena seem to contribute to the occurrence of perinatal cerebral white matter damage and CP. The stimulus that initiates the inflammation remains obscure. One thousand two hundred forty-six infants born before the 28th postmenstrual week had a protocol ultrasound scan of the brain read concordantly by...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e3181bf5fab
更新日期:2010-01-01 00:00:00
abstract::To study the course of regional metabolite concentrations during early brain development, we measured in vivo metabolites [N-acetyl-aspartate (NAA), choline-containing compounds, and myoinositol (M-Ino)] in the precentral area of the cerebrum by short echo-time single volume proton magnetic resonance spectroscopy and ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199502000-00003
更新日期:1995-02-01 00:00:00
abstract::Mutations in multidrug resistance 3 gene (MDR3 or ABCB4) underlie progressive familial intrahepatic cholestasis type 3 (PFIC3), a severe pediatric liver disease progressing to cirrhosis. Abcb4-/- mice exhibit slowly developing hepatic lesions that can be accelerated by feeding a cholic acid (CA)-supplemented diet. We ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/pdr.0b013e31802d7780
更新日期:2007-02-01 00:00:00
abstract::BackgroundSotos syndrome (SoS) is an overgrowth disorder with various congenital anomalies and is usually accompanied by other clinical problems. However, anorectal malformations have not been documented as part of the SoS entity. Our objective is to report on a case of SoS associated with Hirschsprung's disease (HSCR...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2017.106
更新日期:2017-07-01 00:00:00
abstract::The primary manifestations of Pompe disease are muscle weakness and cardiomyopathy. Although accumulation of glycogen has also been seen in the nervous system in patients, the significance of brain involvement in infantile-onset Pompe disease is not clear. In this study, brain development in five cases of infantile-on...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.pdr.0000233014.84318.4e
更新日期:2006-09-01 00:00:00
abstract:BACKGROUND:Genotyping tests were developed to attenuate the impact of viral resistance. Information about the efficacy in genotype base antiretroviral therapy in children is rare and even more in low- and middle-income countries. METHODS:Sixteen children with antiretroviral therapy (ART) failure and triple-class drug-...
journal_title:Pediatric research
pub_type: 杂志文章,多中心研究
doi:10.1038/pr.2016.53
更新日期:2016-07-01 00:00:00
abstract::BackgroundTo examine the mechanism of urethral seam formation during embryonal development of rat urethra.MethodsTime-mated Sprague-Dawley rats were killed and the genital tubercles of male pups harvested on embryonic day (ED) 15, 16, 18, and 19. External morphology was observed under scanning electron microscope. Ser...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2017.185
更新日期:2017-12-01 00:00:00
abstract::Five enzymes were measured in 50 liver specimens (18 normal liver, 20 Reye liver, 12 diverse liver disorders other than Reye syndrome). The enzymes were: glutamic dehydrogenase (E.C. 1.4.1.3), monoamine oxidase (E.C. 1.4.3.4), lactate dehydrogenase (E.C. 1.1.1.27), D-glucose-6-phosphate dehydrogenase (E.C. 1.1.1.49), ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198501000-00006
更新日期:1985-01-01 00:00:00
abstract::The results of prior studies suggest that abnormalities of development and function of the fetal adrenal occur in pregnancies complicated by intrauterine fetal growth retardation (IUGR). In the present investigation, we sought to extend such studies by matching IUGR infants with normally grown infants of women in whom...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章
doi:10.1203/00006450-199406000-00003
更新日期:1994-06-01 00:00:00
abstract::We injected 3-day-old (neonatal), 8-day-old (infant), and 8-wk-old (adult) Sprague-Dawley rats with monocrotaline to examine the effect of a toxic agent at various stages of lung development. Two and four weeks after injection the rats were killed and the heart and lungs removed: the right and left ventricles were sep...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198507000-00019
更新日期:1985-07-01 00:00:00
abstract:BACKGROUND:A growing body of evidence defines inflammation as a hallmark feature of disease pathogenesis of Duchenne muscular dystrophy. To tailor potential immune modulatory interventions, a better understanding of immune dysregulation in Duchenne muscular dystrophy is needed. We now asked whether dystrophin deficienc...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0427-3
更新日期:2019-08-01 00:00:00
abstract::Growth hormone (GH) regulates growth and development in the postnatal period but lacks somatotropic activity in the fetus. In contrast, the placental hormone placental lactogen (PL) stimulates amino acid transport, DNA synthesis, and somatomedin production in isolated fetal tissues, suggesting that PL may function as ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199208000-00015
更新日期:1992-08-01 00:00:00
abstract::This report describes a third mucopolysaccharidosis in animals: canine mucopolysaccharidosis VII. The affected dog was the offspring of a father-daughter mating. Weakness in the rear legs was evident at 8 weeks of age and became progressively worse. He had a large head, a shortened maxilla, and corneal granularities. ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198410000-00014
更新日期:1984-10-01 00:00:00
abstract::The effects on the conceptus of persistently decreased maternal plasma amino acid concentrations were studied in pregnant rats by the infusion of glucagon (0.21 mg/day) to the mother from day 14 to 20 of gestation with a subcutaneous, osmotically driven minipump. Controls received diluent. The experimental animals eit...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198611000-00002
更新日期:1986-11-01 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::The association between lung injury and thrombocytopenia was investigated by comparing the megakaryocyte and platelet counts, and platelet activation using P-selectin as a marker, between the prepulmonary (right atrial) and postpulmonary (left atrial) blood in adult and neonatal (preterm and term) rats with and withou...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000079186.86219.29
更新日期:2003-09-01 00:00:00
abstract::An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...
journal_title:Pediatric research
pub_type: 已发布勘误
doi:10.1038/s41390-019-0680-5
更新日期:2020-04-01 00:00:00
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::The effect of hypertension in pregnant women on fetal maturation is an issue of considerable importance. Because of a possible role of prolactin in fetal adrenal steroidogenesis and in fetal lung maturation, we have investigated the relationship between hypertension in pregnant women and levels of prolactin and dehydr...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198609000-00014
更新日期:1986-09-01 00:00:00
abstract::The proposed actions of atrial natriuretic factor (ANF) are mediated through specific plasma membrane (R1) receptors coupled to guanylate cyclase. A second receptor, R2, has been characterized by its ability to bind to an acyclic, truncated ANF analog (C-ANF4-23). The ANF-R2 receptor has not been identified in the fet...
journal_title:Pediatric research
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00