Adrenomedullin increases pulmonary blood flow in fetal sheep.

Abstract:

:We studied the effects of exogenously administered adrenomedullin on fetal pulmonary arterial blood flow in near-term fetal sheep. The hemodynamic effects of a single injection of adrenomedullin into the left pulmonary artery were compared with those of acetylcholine; the effects of repeated injections of adrenomedullin were also studied. In seven unanesthetized fetal sheep, catheters were inserted into the left pulmonary artery to administer drugs, and into the main pulmonary and carotid arteries to measure pressures. An ultrasonic flow transducer was placed around the left pulmonary artery to measure flow continuously. A single 5-microgram injection of adrenomedullin (1.90 +/- 0.35 micrograms/kg of fetal weight) increased pulmonary arterial blood flow significantly, from 17 +/- 10 to 120 +/- 21 mL/min (p < 0.001). Two micrograms of acetylcholine (0.74 +/- 0.14 microgram/kg of fetal weight) also increased left pulmonary arterial blood flow, from 18 +/- 16 to 113 +/- 37 mL/min, but the effect of adrenomedullin on flow was more prolonged than was that of acetylcholine. Additionally, adrenomedullin and acetylcholine similarly decreased mean pulmonary arterial pressure by 11 and 16%, respectively, but adrenomedullin did not decrease mean carotid arterial pressure to the same degree as acetylcholine (2 versus 19%, respectively). Five sequentially repeated injections of adrenomedullin, once every 5 min, increased left pulmonary arterial blood flow significantly in a stepwise manner without significantly changing heart rate or mean pulmonary and carotid arterial pressures. We conclude that exogenously administered adrenomedullin is a pulmonary vasodilator in fetal sheep and has the ability to increase pulmonary blood flow significantly; there is less effect on the systemic circulation. This finding might be important in considering the therapeutic use of this peptide in the management of persistent pulmonary hypertension in the perinatal period.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

de Vroomen M,Takahashi Y,Gournay V,Roman C,Rudolph AM,Heymann MA

doi

10.1203/00006450-199704000-00007

subject

Has Abstract

pub_date

1997-04-01 00:00:00

pages

493-7

issue

4 Pt 1

eissn

0031-3998

issn

1530-0447

journal_volume

41

pub_type

杂志文章
  • Utilization of intravenously administered glucose-oligosaccharides in growing miniature pigs.

    abstract::The ability of intravenously administered glucose or glucose oligosaccharides to supply 12% of the energy requirement of the growing miniature pig was determined. All pigs were fed a stock diet from days 5-28 of life, and a central venous catheter was inserted at 29 days. For the next 30 days, all pigs were fed both e...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198204000-00013

    authors: Andersen DW,Filer LJ Jr,Wu-Rideout YC,White LB,Stegink LD

    更新日期:1982-04-01 00:00:00

  • Lactic acidosis in a newborn with adrenal calcifications.

    abstract::A patient is reported who presented in the newborn period with an unusual combination of congenital lactic acidosis and bilateral calcifications in the adrenal medulla, visible on standard abdominal x-ray and ultrasound examination. At birth, the proband was hypotonic and dystrophic. She developed respiratory insuffic...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e3181b40a80

    authors: Zecic A,Smet JE,De Praeter CM,Vanhaesebrouck P,Viscomi C,Van Den Broecke C,De Paepe B,Lohse P,Martin JJ,Jackson JG,Campbell CR,De Meirleir LJ,Zeviani M,Seneca SH,Lissens W,Van Coster RN

    更新日期:2009-09-01 00:00:00

  • The effect of alpha-adrenergic blockade on the pulmonary vascular response to dopamine in neonatal lambs.

    abstract::The effect of alpha-adrenergic blockade by phentolamine on the pulmonary vascular response to dopamine was studied in chronically prepared newborn lambs. Dopamine was administered at doses of 2.7 micrograms . kg-1 . min-1, 27 micrograms . kg-1 . min-1 and 270 micrograms . kg-1 . min-1 with and without alpha-adrenergic...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198306000-00007

    authors: Williams BJ,Drummond WH

    更新日期:1983-06-01 00:00:00

  • Bone histomorphometry in children with newly diagnosed acute lymphoblastic leukemia.

    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

    authors: Leeuw JA,Koudstaal J,Wiersema-Buist J,Kamps WA,Timens W

    更新日期:2003-12-01 00:00:00

  • Leptin levels and body fatness in children: effects of gender, ethnicity, and sexual development.

    abstract::Leptin, a hormone secreted by adipocytes, is elevated in blood of obese adults. It is unknown whether the concentration is affected by gender, ethnicity, age, or stage of sexual maturation in children. We measured serum leptin levels in 183 children and 27 young adults using a double-antibody ELISA assay. Body fat mas...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199710000-00010

    authors: Ellis KJ,Nicolson M

    更新日期:1997-10-01 00:00:00

  • Dietary lecithin protects against cholestatic liver disease in cholic acid-fed Abcb4- deficient mice.

    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

    authors: Lamireau T,Bouchard G,Yousef IM,Clouzeau-Girard H,Rosenbaum J,Desmoulière A,Tuchweber B

    更新日期:2007-02-01 00:00:00

  • Dexamethasone inhibits maturation and alters function of monocyte-derived dendritic cells from cord blood.

    abstract::Critically ill infants are treated with dexamethasone (Dx) and other glucocorticoids to reduce inflammation and to promote lung and cardiac function. The neonatal immune system is immature, so neonatal dendritic cells (DCs) might be especially sensitive to glucocorticoid-mediated immunosuppression. To test this, we co...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000157677.72136.09

    authors: Mainali ES,Kikuchi T,Tew JG

    更新日期:2005-07-01 00:00:00

  • Nitric oxide increases the survival of rats with a high oxygen exposure.

    abstract::The purpose of this study was to begin to examine the influence of inhaled NO on O2 toxicity. The survival of Sprague-Dawley rats exposed to >95% O2, >95% O2 + 10 ppm NO, >95% O2 + 100 ppm NO, and >95% O2 + 3 ppm NO2 was determined. Survival at 120 h was 2/24 in >95% O2, 2/12 in >95% O2 + 10 ppm NO, and 1/12 in >95% O...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199806000-00003

    authors: Nelin LD,Welty SE,Morrisey JF,Gotuaco C,Dawson CA

    更新日期:1998-06-01 00:00:00

  • Major circadian variations of glucose homeostasis in a patient with Rabson-Mendenhall syndrome and primary insulin resistance due to a mutation (Cys284-->Tyr) in the insulin receptor alpha-subunit.

    abstract::We have performed clinical, in vitro biochemical, and genetic studies of a patient with severe insulin resistance, considerable growth restriction, and Rabson-Mendenhall syndrome (patient RM-3). The blood IGF-I level was undetectable in this patient, although the GH level was moderately decreased. During the postprand...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199707000-00012

    authors: Desbois-Mouthon C,Magré J,Duprey J,Caron M,Blivet-Van Eggelpoel MJ,Daubas C,Gourmelen M,Chevallier B,Rizkalla S,Robert JJ,Capeau J

    更新日期:1997-07-01 00:00:00

  • Lung development in the fetal primate Macaca nemestrina. III. HMD.

    abstract::Delivery of M. nemestrina at 80% of normal gestation provides a population of neonates at high risk for hyaline membrane disease (HMD). The diagnosis of HMD was made by the presence of reticulogranular densities and air bronchograms on chest radiographs. Patchy atelectasis was seen in the lungs of animals assigned by ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-197905000-00017

    authors: Prueitt JL,Palmer S,Standaert TA,Luchtel DL,Murphy JH,Hodson WA

    更新日期:1979-05-01 00:00:00

  • Chronic neutropenia and defect in superoxide generation of granulocytes in two patients: enhancement of bactericidal capacity and respiratory burst activity by treatment with recombinant human granulocyte colony-stimulating factor.

    abstract::We have identified two unrelated girls with chronic neutropenia [absolute neutrophil counts (ANC) 10-870 and 10-940/microL in patients 1 and 2, respectively] and severe defect in superoxide anion generation by granulocytes. Formyl-methionyl-leucyl-phenylalanine-induced superoxide release was 1.2 +/- 0.9 and 1.9 +/- 1....

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199501000-00011

    authors: Káposzta R,Maródi L

    更新日期:1995-01-01 00:00:00

  • β1-Adrenoceptor mRNA level reveals distinctions between infantile hemangioma and vascular malformations.

    abstract:BACKGROUND:Infantile hemangioma (IH) is the most frequent vascular tumor of early childhood. Recently, propranolol, a nonselective β1- and β2-adrenoceptor inhibitor, was introduced into the therapy of severe proliferating IH with excellent results. However, the underlying mechanism of action of propranolol is still unc...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2013.16

    authors: Rössler J,Haubold M,Gilsbach R,Jüttner E,Schmitt D,Niemeyer CM,Hein L

    更新日期:2013-04-01 00:00:00

  • Mitogen-activated protein kinase phosphatase-1 prevents lipopolysaccharide-induced apoptosis in immature rat intestinal epithelial cells.

    abstract:BACKGROUND:Necrotizing enterocolitis is characterized by intestinal inflammation and epithelial barrier dysfunction. Mitogen-activated protein kinase (MAPK) phosphatase (MKP)-1 plays a pivotal role in the feedback control of MAPK signaling, which regulates inflammation and apoptosis. We hypothesized that MKP-1 prevents...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2015.88

    authors: Talavera MM,Kralik N,Jin Y,Chen B,Liu Y,Nelin LD

    更新日期:2015-08-01 00:00:00

  • Ethylmalonic aciduria is associated with an amino acid variant of short chain acyl-coenzyme A dehydrogenase.

    abstract::Ethylmalonic aciduria is a common biochemical finding in patients with inborn errors of short chain fatty acid beta-oxidation. The urinary excretion of ethylmalonic acid (EMA) may stem from decreased oxidation by short chain acyl-CoA dehydrogenase (SCAD) of butyryl-CoA, which is alternatively metabolized by propionyl-...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199606000-00021

    authors: Corydon MJ,Gregersen N,Lehnert W,Ribes A,Rinaldo P,Kmoch S,Christensen E,Kristensen TJ,Andresen BS,Bross P,Winter V,Martinez G,Neve S,Jensen TG,Bolund L,Kølvraa S

    更新日期:1996-06-01 00:00:00

  • Drosophila, a golden bug, for the dissection of the genetic basis of tolerance and susceptibility to hypoxia.

    abstract::We have previously discovered that the adult Drosophila melanogaster is tolerant to a low O2 environment, withstanding hours of total O2 deprivation without showing any evidence of cell injury. Subsequently, our laboratory embarked on the study of hypoxia tolerance using a mutagenesis and overexpression screens to beg...

    journal_title:Pediatric research

    pub_type: 杂志文章,评审

    doi:10.1203/PDR.0b013e3181b27275

    authors: Zhou D,Visk DW,Haddad GG

    更新日期:2009-09-01 00:00:00

  • Dietary fish oil increases fat absorption and fecal bile acid content without altering bile acid synthesis in 20-d-old weanling rats following massive ileocecal resection.

    abstract:INTRODUCTION:Dietary fish oil (FO) was reported to lower fecal fat excretion in a weanling rat model of short bowel syndrome (SBS) after ileocecal resection (ICR), and to induce changes in secretion and synthesis of bile acid (BA) in adults. We hypothesized that dietary FO, as compared with corn oil (CO), increases int...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2012.41

    authors: Yang Q,Lan T,Chen Y,Dawson PA

    更新日期:2012-07-01 00:00:00

  • 12- and 15-hydroxyeicosatetraenoic acid are excreted in the urine of peroxisome-deficient patients: evidence for peroxisomal metabolism in vivo.

    abstract::To determine the importance of peroxisomes and mitochondria in hydroxyeicosatetraenoic acid (HETE) oxidation in vivo, urinary excretion of 12- and 15-HETE was measured in eight patients with a peroxisome deficiency disorder (Zellweger syndrome) showing normal mitochondrial beta-oxidation capacity, in three patients wi...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199601000-00022

    authors: Mayatepek E,Lehmann WD

    更新日期:1996-01-01 00:00:00

  • Neurosteroid replacement therapy using the allopregnanolone-analogue ganaxolone following preterm birth in male guinea pigs.

    abstract:BACKGROUND:Children born preterm, especially boys, are at increased risk of developing attention deficit hyperactivity disorder (ADHD) and learning difficulties. We propose that neurosteroid-replacement therapy with ganaxolone (GNX) following preterm birth may mitigate preterm-associated neurodevelopmental impairment. ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/s41390-018-0185-7

    authors: Shaw JC,Dyson RM,Palliser HK,Gray C,Berry MJ,Hirst JJ

    更新日期:2019-01-01 00:00:00

  • Chitosan enhances the in vitro surface activity of dilute lung surfactant preparations and resists albumin-induced inactivation.

    abstract::Chitosan is a natural, cationic polysaccharide derived from fully or partially deacetylated chitin. Chitosan is capable of inducing large phospholipid aggregates, closely resembling the function of nonionic polymers tested previously as additives to therapeutic lung surfactants. The effects of chitosan on improving th...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.pdr.0000227558.14024.57

    authors: Zuo YY,Alolabi H,Shafiei A,Kang N,Policova Z,Cox PN,Acosta E,Hair ML,Neumann AW

    更新日期:2006-08-01 00:00:00

  • Detection of cardiac hypertrophy in the fetus by approximation of the current dipole using magnetocardiography.

    abstract::To determine the developmental changes in the myocardial current during fetal life, and to evaluate the clinical usefulness of magnetocardiography for prenatal diagnosis of cardiac hypertrophy or enlargement, we approximated the magnitude of the one-current dipole of the fetal heart using fetal magnetocardiography (fM...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-200108000-00013

    authors: Horigome H,Shiono J,Shigemitsu S,Asaka M,Matsui A,Kandori A,Miyashita T,Tsukada K

    更新日期:2001-08-01 00:00:00

  • Metabolomics of prematurity: analysis of patterns of amino acids, enzymes, and endocrine markers by categories of gestational age.

    abstract:BACKGROUND:Prematurity may influence the levels of amino acids, enzymes, and endocrine markers obtained through newborn screening. Identifying which analytes are the most affected by degree of prematurity could provide insight into how prematurity impacts metabolism. METHODS:Analytes from blood spots assayed by Newbor...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2013.212

    authors: Wilson K,Hawken S,Ducharme R,Potter BK,Little J,Thébaud B,Chakraborty P

    更新日期:2014-02-01 00:00:00

  • Histopathologic changes and the immune response within the jejunal mucosa in infants and children.

    abstract::Jejunal biopsies obtained from 45 children referred for a variety of clinical conditions were examined histologically and by standard immunofluorescence methods. The number of plasma cells was recorded per "mucosal tissue unit". The results showed that most of the immunoglobulin A (IgA) counts in infants under 3 yr wi...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-197906000-00002

    authors: Maffei HV,Kingston D,Hill ID,Shiner M

    更新日期:1979-06-01 00:00:00

  • Oral insulin increases small intestinal mass and disaccharidase activity in the newborn miniature pig.

    abstract::Factors, such as insulin, found in human and pig colostrum and mature milk likely influence small intestinal growth and development. Although pharmacologic doses of insulin injected parenterally may accelerate small intestinal development in altricial animals such as the rodent, the effects of oral insulin on intestin...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199008000-00018

    authors: Shulman RJ

    更新日期:1990-08-01 00:00:00

  • Effects of maternal diabetes or in vitro hyperglycemia on uptake of palmitic and arachidonic acid by rat embryos.

    abstract::Altered transfer of nutrients from mother to conceptus may be involved in the pathogenesis of the developmental disturbances in offspring of diabetic mothers. In our study, the embryonic uptake of a saturated (palmitic acid) and a nonsaturated (arachidonic acid) fatty acid was evaluated in a normal and a diabetes-like...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199108000-00005

    authors: Engström E,Haglund A,Eriksson UJ

    更新日期:1991-08-01 00:00:00

  • Thyroid hemiagenesis is a rare variant of thyroid dysgenesis with a familial component but without Pax8 mutations in a cohort of 22 cases.

    abstract::Thyroid hemiagenesis is a rare form of thyroid dysgenesis of which some familial cases have been reported, including one associated with a heterozygous mutation in the Pax8 gene. However, the physiopathology remains not well known. The objectives of this study were 1) to describe the clinical features, 2) to look for ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000161409.04177.36

    authors: Castanet M,Leenhardt L,Léger J,Simon-Carré A,Lyonnet S,Pelet A,Czernichow P,Polak M

    更新日期:2005-06-01 00:00:00

  • Long-time persistence of superantigen-producing Staphylococcus aureus strains in the intestinal microflora of healthy infants.

    abstract::Staphylococcus aureus has been isolated at an increasing rate from infants' stools during the last decades, but it is not known whether this species can colonize and persist in the intestinal microflora. To investigate this, 49 Swedish infants were followed prospectively from birth until 12 months of age. S. aureus wa...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-200012000-00007

    authors: Lindberg E,Nowrouzian F,Adlerberth I,Wold AE

    更新日期:2000-12-01 00:00:00

  • Kidney disease among children in sub-Saharan Africa: systematic review.

    abstract::The global burden of kidney disease is increasing, and several etiologies first begin in childhood. Risk factors for pediatric kidney disease are common in Africa, but data regarding its prevalence are lacking. We completed a systematic review of community-based studies describing the prevalence of proteinuria, hematu...

    journal_title:Pediatric research

    pub_type: 杂志文章,评审

    doi:10.1038/pr.2014.189

    authors: Kayange NM,Smart LR,Tallman JE,Chu EY,Fitzgerald DW,Pain KJ,Peck RN

    更新日期:2015-02-01 00:00:00

  • Effects of asphyxia on renal function in the newborn piglet.

    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

    authors: Alward CT,Hook JB,Helmbrath TA,Bailie MD

    更新日期:1978-03-01 00:00:00

  • Regulation of the renal response to atrial natriuretic peptide by sodium intake in preweaned rats.

    abstract::The neonate conserves sodium avidly, and sodium intake is normally limited to that present in maternal milk. To evaluate the role of atrial natriuretic peptide (ANP) in this adaptation, preweaned rat pups were artificially reared and fed a formula with either normal sodium (25 mEq/L) or high sodium (145 mEq/L) for 7-8...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199608000-00017

    authors: Chevalier RL,Muchant DG,Thornhill BA,Belmonte DC,Pence RA,Baertschi AJ

    更新日期:1996-08-01 00:00:00

  • Tin-protoporphyrin-mediated disruption in vivo of heme oxygenase-2 protein integrity and activity in rat brain.

    abstract::The ability of synthetic metalloporphyrins to suppress heme oxygenase activity and bilirubin formation has recently become of considerable clinical and experimental interest for suppression of jaundice in humans, including neonatal hyperbilirubinemia. The present investigation compares the biochemical effects of Sn- a...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199209000-00016

    authors: Mark JA,Maines MD

    更新日期:1992-09-01 00:00:00