Endogenous opioids do not mediate HCl-induced myocardial dysfunction.

Abstract:

:We evaluated the hypothesis that increased endogenous opioid activity mediates part or all of the left ventricular contractile and pump dysfunction previously demonstrated in HCl-induced metabolic acidemia. Eighteen Western newborn lambs were catheterized and instrumented; pacing wires were sutured to the right atrial appendage; a catheter mounted micromanometer pressure transducer was inserted into the left ventricle; and a 2.5 F thermistor was inserted into the distal abdominal aorta. The lambs were studied 3 days after surgery. Metabolic acidemia was produced with an infusion of 0.5 N HCl into the inferior vena cava. Inhibition of endogenous opioids was achieved with a bolus of 2 mg/kg of intravenous naloxone, which was demonstrated to inhibit morphine sulfate-induced myocardial dysfunction. The effects of opioid inhibition were contrasted with our previously published results after restoration of a normal arterial pH with intravenous sodium bicarbonate. In agreement with our previous study, we found that reducing the arterial pH from 7.41 +/- 0.01 to 6.97 +/- 0.04 was associated with a 45% reduction in cardiac output which resulted from a 50% reduction in stroke volume. These changes in turn were mediated by a 35% reduction in the maximal first derivative of left ventricular pressure and/or a 63% increase in systemic vascular resistance which we used to estimate contractility and afterload, respectively. Left ventricular end diastolic pressure increased during acidemia. Although opioid inhibition produced a consistent increase in the maximal first derivative of left ventricular pressure, this increase was relatively small and was not associated with a significant change in cardiac output, stroke volume, or systemic vascular resistance.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Fisher DJ,Dreyer WJ,Tate C,Michael L,Smith EO,Entman M

doi

10.1203/00006450-198806000-00023

subject

Has Abstract

pub_date

1988-06-01 00:00:00

pages

643-6

issue

6

eissn

0031-3998

issn

1530-0447

journal_volume

23

pub_type

杂志文章
  • Effect of oxypurinol, a xanthine oxidase inhibitor, on hepatic injury in the bile duct-ligated rat.

    abstract::Oxidant stress has been implicated as playing a role in the pathogenesis of cholestatic liver injury. The objective of this study was to determine whether the xanthine oxidase/xanthine dehydrogenase enzyme system was involved in this oxidant stress. Adult Sprague-Dawley rats were treated with the xanthine oxidase inhi...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199809000-00022

    authors: Sokol RJ,Devereaux MW,Khandwala R

    更新日期:1998-09-01 00:00:00

  • The relation of severe malnutrition in infancy to the intelligence of school children with differing life histories.

    abstract::The IQ's of Jamaican boys aged 6-10 were associated significantly with the presence or absence of severe malnutrition in infancy, with height at time of IQ testing, and with a measure of the boys' social background. A multiple correlation coefficient of 0.674 was obtained between IQ and the three factors. Social backg...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-197601000-00011

    authors: Richardson SA

    更新日期:1976-01-01 00:00:00

  • Effect of increased lung expansion on surfactant protein mRNA levels in lambs.

    abstract::Increased fetal lung expansion profoundly inhibits surfactant protein gene expression and stimulates cellular proliferation in the fetal lung. Our aim was to determine whether increased expansion of the lung after birth, by the application of a continuous positive airway pressure (CPAP) for 12 h, inhibits surfactant p...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-200112000-00015

    authors: Lines AL,Davey MG,Harding R,Hooper SB

    更新日期:2001-12-01 00:00:00

  • Selective losses of brainstem catecholamine neurons after hypoxia-ischemia in the immature rat pup.

    abstract::Hypoxic-ischemic (HI) injury in the preterm neonate incurs numerous functional deficits, however little is known about the neurochemically-defined brain nuclei that may underpin them. Key candidates are the brainstem catecholamine neurons. Using an immature animal model, the postnatal day (P)-3 (P3) rat pup, we invest...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e3181659774

    authors: Buller KM,Wixey JA,Pathipati P,Carty M,Colditz PB,Williams CE,Scheepens A

    更新日期:2008-04-01 00:00:00

  • Phototherapy for neonatal jaundice: in vitro comparison of light sources.

    abstract::Phototherapy results in the conversion of bilirubin to more water-soluble isomers. Six clinically used phototherapy lamps which differ in their emission spectra have been compared in their ability to produce configurational and structural isomers of bilirubin in vitro. For all of the lamps, the initial rate of configu...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198407000-00021

    authors: Ennever JF,Sobel M,McDonagh AF,Speck WT

    更新日期:1984-07-01 00:00:00

  • Purine dysfunction in cells from patients with adenosine deaminase deficiency.

    abstract::Conversion of adenosine to inosine is decreased in adenosine deaminase (ADA)-deficient fibroblasts at all concentrations of adenosine tested. Adenosine is not differentially toxic to ADA-deficient fibroblasts except at very high (5 X 10(-4) -1 X 10(-3) M) adenosine levels. Conversion of [14C] adenosine to GTP is not d...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-197607000-00002

    authors: Benke PJ,Dittmar D

    更新日期:1976-07-01 00:00:00

  • Placental phenotypes of intrauterine growth.

    abstract::The placenta is essential to nutrition before birth. Recent work has shown that a range of clearly defined alterations can be found in the placentas of infants with intrauterine growth restriction (IUGR). In the mouse, a placental specific knockout of a single imprinted gene, encoding IGF-2, results in one pattern of ...

    journal_title:Pediatric research

    pub_type: 杂志文章,评审

    doi:10.1203/01.PDR.0000181381.82856.23

    authors: Sibley CP,Turner MA,Cetin I,Ayuk P,Boyd CA,D'Souza SW,Glazier JD,Greenwood SL,Jansson T,Powell T

    更新日期:2005-11-01 00:00:00

  • Siglec-9 and SHP-1 are differentially expressed in neonatal and adult neutrophils.

    abstract::Neonatal PMN (polymorphonuclear neutrophils) exhibit altered inflammatory responsiveness and greater longevity compared with adult PMN; however, the involved mechanisms are incompletely defined. Receptors containing immunoreceptor tyrosine-based inhibitory motif (ITIM) domains promote apoptosis by activating inhibitor...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e3181b1bc19

    authors: Rashmi R,Bode BP,Panesar N,King SB,Rudloff JR,Gartner MR,Koenig JM

    更新日期:2009-09-01 00:00:00

  • Exercise-associated prevention of adult cardiovascular disease in children and adolescents: monocytes, molecular mechanisms, and a call for discovery.

    abstract::Atherosclerosis originates in childhood and adolescence. The goal of this review is to highlight how exercise and physical activity during childhood and adolescence, critical periods of growth and development, can prevent adult cardiovascular disease (CVD), particularly through molecular mechanisms of monocytes, a key...

    journal_title:Pediatric research

    pub_type: 杂志文章,评审

    doi:10.1038/s41390-019-0581-7

    authors: Cooper DM,Radom-Aizik S

    更新日期:2020-01-01 00:00:00

  • Glucosylsphingosine accumulation in mice and patients with type 2 Gaucher disease begins early in gestation.

    abstract::Gaucher disease, the most common of the sphingolipidoses, results from the inherited deficiency of the enzyme glucocerebrosidase (EC 3.2.1.45). Although type 2 (acute neuronopathic) Gaucher disease is associated with rapidly progressive and fatal neurologic deterioration, the pathophysiologic mechanisms leading to the...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-200008000-00018

    authors: Orvisky E,Sidransky E,McKinney CE,Lamarca ME,Samimi R,Krasnewich D,Martin BM,Ginns EI

    更新日期:2000-08-01 00:00:00

  • The effects of altered nutritional status upon insulin-like growth factors and their binding proteins in neonatal rats.

    abstract::To investigate the role of nutrition in the regulation of IGFs during the perinatal period, 10-d-old rats were infused intravenously with various concentrations of nutrients for 24 h. Breast-fed litter mates served as controls. The effect of caloric intake on concentrations of IGF-I and IGF-II as well as IGF-binding p...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198908000-00012

    authors: Philipps A,Drakenberg K,Persson B,Sjögren B,Eklöf AC,Hall K,Sara V

    更新日期:1989-08-01 00:00:00

  • Neonatal body composition: dual-energy X-ray absorptiometry, magnetic resonance imaging, and three-dimensional chemical shift imaging versus chemical analysis in piglets.

    abstract::An animal study to evaluate dual-energy x-ray absorptiometry (DXA) and magnetic resonance (MR) imaging and spectroscopy for measurement of neonatal body composition was performed. Twenty-three piglets with body weights ranging from 848 to 7550 g were used. After measuring total body water, animals were killed and body...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199910000-00018

    authors: Fusch C,Slotboom J,Fuehrer U,Schumacher R,Keisker A,Zimmermann W,Moessinger A,Boesch C,Blum J

    更新日期:1999-10-01 00:00:00

  • Fructose-induced hyperuricemia: observations in normal children and in patients with hereditary fructose intolerance and galactosemia.

    abstract::After the infusion of fructose, 0.25 g/kg body wt, the mean peak plasma uric acid level was 5.4 +/- 0.7 (SEM) mg/100 ml in six normal children and was not significantly increased compared with that of the mean basal value of 4.1 +/- 0.5 mg/100 ml. The mean blood inorganic phosphate (Pi) levels were significantly less ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-197510000-00005

    authors: Kogut MD,Roe TF,Ng W,Nonnel GN

    更新日期:1975-10-01 00:00:00

  • Differential effects of cholesterol and budesonide on biophysical properties of clinical surfactant.

    abstract:INTRODUCTION:Corticosteroids have been widely used in clinical medicine as a first-line therapy to modify the inflammatory response in many pulmonary and systemic diseases. Inhaled and intratracheally administered corticosteroids have a particular interest in that their use allows the clinician to circumvent systemic s...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2011.78

    authors: Zhang H,Wang YE,Neal CR,Zuo YY

    更新日期:2012-04-01 00:00:00

  • Renal hemodynamic responses to hypoxemia during development: relationships to circulating vasoactive substances.

    abstract::Chronically catheterized fetal lambs (n = 11, gestational age 111-139 days) and neonatal lambs (n = 20, postnatal age 4-30 days) were studied to explore during development the relationship of renal hemodynamic responses during hypoxemia to plasma epinephrine concentration (E), plasma norepinephrine concentration (NE),...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198802000-00004

    authors: Weismann DN,Robillard JE

    更新日期:1988-02-01 00:00:00

  • Interleukin-8/CXCL8 forms an autocrine loop in fetal intestinal mucosa.

    abstract::IL-8/CXC ligand (CXCL) 8 is ingested in high concentrations by the human fetus/neonate with amniotic fluid and human milk, and is also produced constitutively by intestinal epithelial cells (IEC). We have shown that recombinant human IL-8/CXCL8 (rhIL-8/CXCL8) protects cultured IEC against tumor necrosis factor (TNF)-a...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000133196.25949.98

    authors: Maheshwari A,Lacson A,Lu W,Fox SE,Barleycorn AA,Christensen RD,Calhoun DA

    更新日期:2004-08-01 00:00:00

  • IGF2 gene variants and risk of hypertension in obese children and adolescents.

    abstract::Obese children have a great risk of hypertension and cardiovascular morbidity in adults. The insulin-like growth factor type II (IGF-II) regulates glucose homeostasis, cardiovascular functions, and lipid metabolism. IGF2 gene variants have shown a strong association with weight, body mass index (BMI), and metabolic pr...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e3181d22757

    authors: Faienza MF,Santoro N,Lauciello R,Calabrò R,Giordani L,Di Salvo G,Ventura A,Delvecchio M,Perrone L,Del Giudice EM,Cavallo L

    更新日期:2010-04-01 00:00:00

  • Therapeutic hypothermia modulates complement factor C3a and C5a levels in a rat model of hypoxic ischemic encephalopathy.

    abstract:BACKGROUND:Therapeutic hypothermia (HT) is the only intervention that improves outcomes in neonatal hypoxic-ischemic encephalopathy (HIE). However, the multifactorial mechanisms by which HT impacts HIE are incompletely understood. The complement system plays a major role in the pathogenesis of ischemia-reperfusion inju...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2016.271

    authors: Shah TA,Nejad JE,Pallera HK,Lattanzio FA,Farhat R,Kumar PS,Hair PS,Bass WT,Krishna NK

    更新日期:2017-04-01 00:00:00

  • Effect of maternal smoking on fetal catecholamine concentrations at birth.

    abstract::The aim of this study was to compare catecholamine concentrations in the fetal umbilical artery cord blood from the offspring of smokers versus the offspring of nonsmokers. Pregnant women who were self-identified as smokers (>/=10 cigarettes per day throughout pregnancy) or nonsmokers were recruited for study particip...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-200301000-00020

    authors: Oncken CA,Henry KM,Campbell WA,Kuhn CM,Slotkin TA,Kranzler HR

    更新日期:2003-01-01 00:00:00

  • Airway protection in sleeping infants in response to pharyngeal fluid stimulation in the supine position.

    abstract::This study was designed to evaluate upper airway protective mechanisms in response to pharyngeal fluid stimulation in healthy term and preterm infants at term equivalent age. Five term and seven preterm infants were studied and the following recorded: sleep state, cardiorespiratory function, and swallowing. Infusions ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199811000-00011

    authors: Page M,Jeffery HE

    更新日期:1998-11-01 00:00:00

  • Surfactant protein A-producing cells in human fetal lung are good targets for recombinant adenovirus-mediated gene transfer.

    abstract::Local delivery of Escherichia coli beta-galactosidase gene (beta-gal) to surfactant protein-A (SP-A)-producing cells by a replication-defective recombinant adenovirus (AdCMV.beta-gal) was tested in human 8-12-wk-old fetal lung explants cultured in Waymouth's medium. In contrast to uninfected explants, direct addition ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199607000-00024

    authors: Messina E,Muhlhauser J,Giuliano M,Pandolfi A,Morgese G,Procopio A

    更新日期:1996-07-01 00:00:00

  • Variations in IBD (ACAD8) in children with elevated C4-carnitine detected by tandem mass spectrometry newborn screening.

    abstract::The isobutyryl-CoA dehydrogenase (IBD) enzyme is involved in the degradation of valine. IBD deficiency was first reported in 1998 and subsequent genetic investigations identified acyl-CoA dehydrogenase (ACAD) 8, now IBD, as the gene responsible for IBD deficiency. Only three individuals homozygous or compound heterozy...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.pdr.0000233085.72522.04

    authors: Pedersen CB,Bischoff C,Christensen E,Simonsen H,Lund AM,Young SP,Koeberl DD,Millington DS,Roe CR,Roe DS,Wanders RJ,Ruiter JP,Keppen LD,Stein Q,Knudsen I,Gregersen N,Andresen BS

    更新日期:2006-09-01 00:00:00

  • Effects of ascorbic acid in alkaptonuria: alterations in benzoquinone acetic acid and an ontogenic effect in infancy.

    abstract::The effects of ascorbic acid on the excretion of homogentisic acid and its derivative benzoquinone acetic acid were studied in two adults and three infants. The administration of relatively large amounts of ascorbic acid to the adults was followed by a disappearance of benzoquinone acetic acid from the urine, whereas ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198908000-00015

    authors: Wolff JA,Barshop B,Nyhan WL,Leslie J,Seegmiller JE,Gruber H,Garst M,Winter S,Michals K,Matalon R

    更新日期:1989-08-01 00:00:00

  • Diminished phagocytosis-induced cell death (PICD) in neonatal monocytes upon infection with Escherichia coli.

    abstract::An imbalance in apoptosis or survival of immune cells plays an essential role in the pathophysiology of sepsis. Phagocytosis-induced cell death (PICD) is a common result of the pathogen-host cell interaction mediated by reactive oxygen species (ROS). Neonatal sepsis is frequently characterized by hyperinflammation. Co...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e31815b8e9f

    authors: Gille C,Leiber A,Spring B,Kempf VA,Loeffler J,Poets CF,Orlikowsky TW

    更新日期:2008-01-01 00:00:00

  • Early childhood television viewing and kindergarten entry readiness.

    abstract:BACKGROUND:Using a large population-based sample, this study aims to verify whether televiewing at 29 mo, a common early childhood pastime, is prospectively associated with school readiness at 65 mo. METHODS:Participants are a prospective longitudinal cohort of 991 girls and 1,006 boys from the Quebec Longitudinal Stu...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2013.105

    authors: Pagani LS,Fitzpatrick C,Barnett TA

    更新日期:2013-09-01 00:00:00

  • The effects of galanin on growth hormone secretion in children of normal and short stature.

    abstract::We have evaluated the effect of galanin (Gal), a newly identified hypothalamic peptide, on growth hormone (GH) secretion in 10 children with normal stature (NS), nine with constitutional growth delay (CGD), and five with isolated GH deficiency (IGHD). Gal was infused intravenously at a rate of 8 or 15 micrograms/kg/h....

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198910000-00006

    authors: Loche S,Cella SG,Puggioni R,Stabilini L,Pintor C,Müller EE

    更新日期:1989-10-01 00:00:00

  • Controversies in the identification and management of acute pulmonary hypertension in preterm neonates.

    abstract::It is increasingly recognized that the abnormal physiologic consequences of pulmonary hypertension (PH) may contribute to poor cardiopulmonary health in premature babies. Conflicting literature has led to clinical uncertainty, pathological misinterpretation, and variability in treatment approaches among practitioners....

    journal_title:Pediatric research

    pub_type: 杂志文章,评审

    doi:10.1038/pr.2017.200

    authors: Giesinger RE,More K,Odame J,Jain A,Jankov RP,McNamara PJ

    更新日期:2017-12-01 00:00:00

  • Effect of gentamicin on the auditory brainstem evoked response in term infants: a preliminary report.

    abstract::Seven essentially healthy term infants who received gentamicin starting on the 1st day of life for prolonged rupture of membranes and maternal fever were compared with nine healthy term infants to determine whether this drug induces alterations in the auditory pathway. The auditory pathway was studied on the 3rd day o...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199009000-00017

    authors: Kohelet D,Usher M,Arbel E,Arlazoroff A,Goldberg M

    更新日期:1990-09-01 00:00:00

  • Heart rate turbulence in children--age and heart rate relationships.

    abstract::Heart rate turbulence (HRT) is a chronotropic response of the sinus heart rhythm to ventricular premature beat (VPB). Children show decreasing heart rate together with the maturation of the autonomic nervous system. The aim of the research was to assess the relationship between HRT parameters, age, and heart rate and ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e3181598836

    authors: Kowalewski M,Alifier M,Bochen D,Urban M

    更新日期:2007-12-01 00:00:00

  • MeSsAGe risk score: tool for renal biopsy decision in steroid-dependent nephrotic syndrome.

    abstract:BACKGROUND:A lack of consensus exists as to the timing of kidney biopsy in children with steroid-dependent nephrotic syndrome (SDNS) where minimal change disease (MCD) predominates. This study aimed at examining the applicability of a biomarker-assisted risk score model to select SDNS patients at high risk of focal seg...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/s41390-019-0277-z

    authors: Chan CY,Resontoc LP,Qader MA,Chan YH,Liu ID,Lau PY,Than M,Yeo WS,Loh AH,Tan PH,Wei C,Reiser J,Biswas SK,Ng KH,Yap HK

    更新日期:2019-03-01 00:00:00