Receptor-mediated cAMP production in adult and infant ferret tracheal epithelium.

Abstract:

:Tracheal epithelial cells obtained from adult and infant ferrets were grown in primary culture in vitro. Cells from adult animals grew readily, and many ciliated cells were observed in the cultures. Successful cultures were derived from infant animals, but cell number in infant and adult cultures began to decrease after 6 d. Receptor-mediated activation of adenylate cyclase was determined by incubating monolayers of adult or neonatal cells with beta-adrenergic agonists, prostaglandin E2 (PGE2) and vasoactive intestinal peptide and measuring cAMP production. beta-adrenergic agonists and PGE2, but not vasoactive intestinal peptide, stimulated production of cAMP in both cell types. The 50% effective concentration for isoproterenol and PGE2 in neonatal ferret tracheal epithelial (NFTE) cells was nearly 10-fold more than for adult ferret tracheal epithelial (FTE) cells, but maximal agonist-stimulated cAMP production was significantly different between the cell types only for PGE2. Radioligand binding studies were performed using the beta-adrenergic antagonist [125I]iodocyanopindolol on membrane particulates from confluent monolayers and freshly isolated FTE cells. Binding of iodocyanopindolol was saturable, stereoselective, and of high affinity (binding affinity = 26.1 +/- 6.6 pmol/L, adult; 16.5 +/- 5.7 pmol/L, NFTE). Competition studies with the specific beta 2-adrenergic receptor antagonist, ICI 118 551 revealed a predominance of beta 2-adrenergic receptors on both adult FTE and NFTE cells. Receptor density was significantly higher in adult FTE compared with NFTE cells (48.2 +/- 9.1, 18.1 +/- 1.5 fmol/mg, respectively). Basal adenylate cyclase activity was significantly lower in neonatal cells.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Kercsmar CM,Chung Y,Davis PB

doi

10.1203/00006450-199107000-00016

subject

Has Abstract

pub_date

1991-07-01 00:00:00

pages

75-82

issue

1

eissn

0031-3998

issn

1530-0447

journal_volume

30

pub_type

杂志文章
  • Monocyte toll-like receptor 4 expression and LPS-induced cytokine production increase during gestational aging.

    abstract::Premature newborns are highly susceptible to severe bacterial infections. This is partially due to their immature innate immune system, characterized by decreased neutrophil and monocyte activity as well as by reduced concentrations of complement factors. However, additional mechanisms might be important for innate im...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000163397.53466.0F

    authors: Förster-Waldl E,Sadeghi K,Tamandl D,Gerhold B,Hallwirth U,Rohrmeister K,Hayde M,Prusa AR,Herkner K,Boltz-Nitulescu G,Pollak A,Spittler A

    更新日期:2005-07-01 00:00:00

  • Recycling of glutathione during oxidative stress in erythrocytes of the newborn.

    abstract::The ability of erythrocytes from newborn babies and adults to maintain reduced glutathione levels during oxidative stress was studied. In vitro incubation of erythrocytes with H2O2, with or without inactivation of catalase, caused a rapid depletion of reduced glutathione (GSH) and concomitant accumulation of oxidized ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199210000-00006

    authors: Clahsen PC,Moison RM,Holtzer CA,Berger HM

    更新日期:1992-10-01 00:00:00

  • General immune dampening is associated with disturbed metabolism at diagnosis of type 1 diabetes.

    abstract:BACKGROUND:Type 1 diabetes (T1D) is a serious diagnosis with the prospect of grave short- and long-term complications and even death if poorly managed. An attempt has been made to describe how clinical and immunological deviations might influence each other close to the diagnosis of T1D. METHODS:Sixty-nine newly diagn...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/pr.2013.167

    authors: Rydén A,Ludvigsson J,Fredrikson M,Faresjö M

    更新日期:2014-01-01 00:00:00

  • Ontogeny of the immune system: fetal lamb as a model.

    abstract::We examined adult sheep lymphocytes for the following surface markers: Surface membrane immunoglobulin, antigen identified by anti-sheep thymocyte globulin and complement receptors. We quantitated sheep peripheral blood mononuclear leukocyte proliferative responses to mitogens and alloantigens, and demonstrated a neut...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198405000-00012

    authors: Raghunathan R,Miller ME,Wuest C,Faust J

    更新日期:1984-05-01 00:00:00

  • Effects of Bifidobacterium lactis Bb12 supplementation on body weight, fecal pH, acetate, lactate, calprotectin, and IgA in preterm infants.

    abstract::Preterm infants are prone to abnormal bacterial colonization of the intestine with ensuing adverse health effects. To examine whether the oral application of Bifidobacterium lactis Bb12 (probiotic) may improve selected indicators of health status in preterm infants, a double blind, placebo controlled randomized clinic...

    journal_title:Pediatric research

    pub_type: 杂志文章,随机对照试验

    doi:10.1203/PDR.0b013e318181b7fa

    authors: Mohan R,Koebnick C,Schildt J,Mueller M,Radke M,Blaut M

    更新日期:2008-10-01 00:00:00

  • Liver in alpha1-antitrypsin deficiency: morphologic observations and in vitro synthesis of alpha1-antitrypsin.

    abstract::In an effort to characterize the hepatic abnormality in patients with alpha1-antitrypsin deficiency, three unrelated children with the disorder (Pi types ZZ and SZ), two heterozygous parents (Pi type MZ), and three normal subjects (Pi type MM) were studied. As expected, the livers of the ZZ- and SZ-deficient subjects ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-197601000-00007

    authors: Bhan AK,Grand RJ,Colten HR,Alper CA

    更新日期:1976-01-01 00:00:00

  • Neonatal stress: effects of hypoglycemia and hypoxia on adrenal tyrosine hydroxylase gene expression.

    abstract::Catecholamines (CA) are released from and resynthesized in the adrenal medulla in response to stress. In the mature animal, stimulus-secretion-synthesis coupling occurs through transsynaptic (neuronal) activity. In contrast, in the immature animal, before functional adrenal innervation, certain stressors (hypoglycemia...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199412000-00006

    authors: DeCristofaro JD,LaGamma EF

    更新日期:1994-12-01 00:00:00

  • Complement activation reflects severity of meconium aspiration syndrome in newborn pigs.

    abstract::Meconium aspiration syndrome (MAS) is a serious condition in newborns, associated with a poorly characterized inflammatory reaction. The aim of this study was to investigate a possible role for complement in pulmonary pathophysiology and systemic inflammation in experimental MAS. MAS was induced by instillation of mec...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000141983.32466.2A

    authors: Lindenskov PH,Castellheim A,Aamodt G,Saugstad OD,Mollnes TE

    更新日期:2004-11-01 00:00:00

  • Soluble receptors and cytokine antagonists in human milk.

    abstract::To determine whether human milk contained soluble receptors and cytokine antagonists that might contribute to its anti-inflammatory properties, ELISA and enzyme-amplified sensitivity immunoassay methods were used to quantitate soluble intercellular and vascular cell adhesion molecules, soluble E-selectin, soluble IL-6...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199612000-00011

    authors: Buescher ES,Malinowska I

    更新日期:1996-12-01 00:00:00

  • Immunoblot analysis of antibody binding to polypeptides of Borrelia burgdorferi in children with different clinical manifestations of Lyme disease.

    abstract::We analyzed by means of immunoblot technique the patterns of antibodies binding to polypeptides of Borrelia burgdorferi B31 in the sera of 21 children with different stages of Lyme disease. All sera but one recognized the flagellar protein 41 kD and all but two the 83-kD protein. The number of proteins recognized rose...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198910000-00019

    authors: Nadal D,Taverna C,Hitzig WH

    更新日期:1989-10-01 00:00:00

  • An improved method for evaluating testosterone biosynthetic defects.

    abstract::A double-label, double-substrate incubation technique has been developed and used to study the conversion of progesterone to testosterone in testes extracts from incompletely virilized males. The procedure involves separation of the microsomes from a testicular homogenate, incubating the microsomes with 1 microM [7-3H...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198408000-00018

    authors: Chasalow FI,Blethen SL,Marr HB,French FS

    更新日期:1984-08-01 00:00:00

  • Human milk cell migration and production of monocyte chemotactic factor: lack of activity.

    abstract::The lymphocytes of human breast milk have been previously shown to be immunologically competent while the monocytes have been described as actively motile in some reports but not in another. Cells were separated from milk samples collected by lactating women 2 to 9 days postpartum. Milk cell migration and production o...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198510000-00006

    authors: Hawes CS,Jones WR

    更新日期:1985-10-01 00:00:00

  • Anatomical analysis of the developing cerebral vasculature in premature neonates: absence of precapillary arteriole-to-venous shunts.

    abstract::Germinal matrix hemorrhage-intraventricular hemorrhage (GMH-IVH) commonly affects premature neonates. The gravity of the consequences associated with GMH-IVH makes it a major concern in their care. GMH-IVH begins in the germinal matrix tissue and is, most commonly, the result of venous rupture. Arteriole-to-venous pre...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-200210000-00015

    authors: Anstrom JA,Brown WR,Moody DM,Thore CR,Challa VR,Block SM

    更新日期:2002-10-01 00:00:00

  • The effect of maternal starvation on plasma insulin-like growth factor I concentrations in the late gestation ovine fetus.

    abstract::In view of the suggested relationship between substrate availability, fetal growth and circulating fetal IGF-I concentrations, we investigated the effect of maternal starvation on plasma IGF-I levels in the late gestation ovine fetus. Ten fetuses aged 125-130 d gestation were sampled daily from indwelling arterial cat...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199004000-00015

    authors: Bassett NS,Oliver MH,Breier BH,Gluckman PD

    更新日期:1990-04-01 00:00:00

  • Cysteine and glutathione levels in developing rat kidney and liver.

    abstract::Intracellular levels of cysteine (CSH) and reduced glutathione (GSH) in the kidney and liver of rats from the newborn to the adult period have been determined using a sensitive high performance liquid chromatography method. In the kidney, the intracellular level of free CSH increased 4-fold from 1 to 4 nmol/mg protein...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198711000-00025

    authors: States B,Foreman JW,Segal S

    更新日期:1987-11-01 00:00:00

  • Caffeine to improve breathing effort of preterm infants at birth: a randomized controlled trial.

    abstract::BackgroundCaffeine promotes spontaneous breathing by antagonizing adenosine. We assessed the direct effect of caffeine on respiratory effort in preterm infants at birth.MethodsThirty infants of 24-30 weeks of gestation were randomized for receiving caffeine directly after birth in the delivery room (caffeine DR group)...

    journal_title:Pediatric research

    pub_type: 杂志文章,随机对照试验

    doi:10.1038/pr.2017.45

    authors: Dekker J,Hooper SB,van Vonderen JJ,Witlox RSGM,Lopriore E,Te Pas AB

    更新日期:2017-08-01 00:00:00

  • Where does the developing brain obtain its docosahexaenoic acid? Relative contributions of dietary alpha-linolenic acid, docosahexaenoic acid, and body stores in the developing rat.

    abstract::Docosahexaenoic acid (DHA), a 22-carbon, highly unsaturated, n-3 fatty acid, is important for optimal nervous system function. In this study, designed to quantify how preformed dietary DHA regulates metabolic pathways in vivo, 8-d-old rat pups were divided into four groups and fed artificial rat milk diets. One group ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000147572.57627.AE

    authors: Lefkowitz W,Lim SY,Lin Y,Salem N Jr

    更新日期:2005-01-01 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

  • Plasma protease inhibitors in alpha 1-antitrypsin-deficient children.

    abstract::Seven plasma protease inhibitors were analyzed in 8-yr-old children-75 PiZ (severely deficient), one PiZ-(with a null gene), 32 PiSZ (moderately deficient), and 35 normals. In PiZ and PiSZ alpha 1-antitrypsin-deficient children, significantly higher concentrations of alph 2-macroglobulin (p less than 0.001) and antith...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198508000-00011

    authors: Sveger T

    更新日期:1985-08-01 00:00:00

  • Encephalopathy in neonates with subgaleal hemorrhage is a key predictor of outcome.

    abstract:BACKGROUND:Subgaleal hemorrhage (SGH) is reported to be associated with severe hemodynamic instability, coagulopathy, and even mortality. The importance of the presence or absence of neonatal encephalopathy in predicting SGH outcomes has not been explored. The aim of this study was to determine the relationship of clin...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1038/s41390-019-0400-1

    authors: El-Dib M,Parziale MP,Johnson L,Benson CB,Grant PE,Robinson J,Volpe JJ,Inder T

    更新日期:2019-08-01 00:00:00

  • Perinatal left ventricular performance in fetal sheep: interaction between oxygen ventilation and contractility.

    abstract::Left ventricular (LV) output nearly triples at birth, in association with increases in serum catecholamines. Similar increases in catecholamines in utero, however, do not increase output. We hypothesized that catecholamines increase contractility in utero, but that output cannot increase until LV loading conditions ar...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199701000-00009

    authors: Berning RA,Klautz RJ,Teitel DF

    更新日期:1997-01-01 00:00:00

  • The effect of massive small bowel resection and oral epidermal growth factor therapy on SGLT-1 distribution in rabbit distal remnant.

    abstract::Small bowel resection decreases brush border membrane (BBM) glucose uptake kinetics. Oral epidermal growth factor (EGF) returns net glucose transport across intact tissue to control levels despite persistence of a defect in BBM glucose uptake. The purpose of this study was to examine the effects of resection and EGF t...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000098500.94041.9B

    authors: Chung BM,Wallace LE,Winkfein RK,O'Loughlin EV,Hardin JA,Gall DG

    更新日期:2004-01-01 00:00:00

  • 11-Beta hydroxysteroid dehydrogenase type 2 in human adult and fetal lung and its regulation by sex steroids.

    abstract::11-Beta hydroxysteroid dehydrogenase type 2 (HSD2) oxidizes the biologically active glucocorticoid (GC), cortisol, to inactive cortisone. We characterized HSD2 gene expression and activity in human adult and fetal lung tissues and in cultured fetal lung explants, and examined the potential regulation of HSD2 in the fe...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e3180676cf3

    authors: Garbrecht MR,Klein JM,McCarthy TA,Schmidt TJ,Krozowski ZS,Snyder JM

    更新日期:2007-07-01 00:00:00

  • Quality of reaching and postural control in young preterm infants is related to neuromotor outcome at 6 years.

    abstract::A substantial proportion of the "apparently normal" preterm infants exhibit minor and moderate dysfunctions in neuromotor outcome as they grow older. Birth characteristics, minor abnormalities on the neonatal ultrasound scan of the brain, and motor milestones have only limited value in the early detection of these chi...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/01.PDR.0000170898.60160.09

    authors: Fallang B,Øien I,Hellem E,Saugstad OD,Hadders-Algra M

    更新日期:2005-08-01 00:00:00

  • Impact of norepinephrine and fluid on cerebral oxygenation in experimental hemorrhagic shock.

    abstract::Few data exist regarding resuscitation of hypovolemic shock in infants, and alternative strategies such as vasopressor therapy merit further evaluation. However, the effects of norepinephrine on cerebral perfusion and oxygenation during hemorrhagic shock in the pediatric population are still unclear. Eight anesthetize...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/PDR.0b013e3181425858

    authors: Meybohm P,Renner J,Boening A,Cavus E,Gräsner JT,Grünewald M,Scholz J,Bein B

    更新日期:2007-10-01 00:00:00

  • Neonatal group B streptococcal sepsis: effects of late treatment with dazmegrel.

    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

    authors: Truog WE,Gibson RL,Juul SE,Henderson WR,Redding GJ

    更新日期:1988-04-01 00:00:00

  • The effect of prolonged modification of cerebral temperature on outcome after hypoxic-ischemic brain injury in the infant rat.

    abstract::Hypoxic-ischemic injuries can evolve over several days, and recent studies suggest that further neuronal death may occur 6 to 72 h later. Because cerebral temperature is an important determinant of outcome during the primary injury, we investigated the effect of temperature, on outcome, during the later phases of inju...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199604000-00005

    authors: Sirimanne ES,Blumberg RM,Bossano D,Gunning M,Edwards AD,Gluckman PD,Williams CE

    更新日期:1996-04-01 00:00:00

  • Galactose metabolism in human ovarian tissue.

    abstract::Galactose metabolism was studied in human ovarian tissue obtained from 14 women controls between 21 and 72 y of age, and one 21-y-old galactosemic patient with hypergonadotrophic hypogonadism. Tissue slices were incubated with 1-14C-galactose, and labeled intermediates were analyzed by anion-exchange column chromatogr...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-198902000-00015

    authors: Xu YK,Ng WG,Kaufman FR,Lobo RA,Donnell GN

    更新日期:1989-02-01 00:00:00

  • Disease severity is correlated with plasma clotting and fibrinolytic and kinin-kallikrein activity in neonatal respiratory distress syndrome.

    abstract::This study was undertaken to determine whether simultaneous activation of clotting, fibrinolysis, and kinin-kallikrein is associated with disease severity in preterm infants with neonatal respiratory distress syndrome (RDS), during the first 5 d of life. In the infants with severe RDS, we found activation of clotting,...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199701000-00019

    authors: Brus F,Van Oeveren W,Okken A,Oetomo SB

    更新日期:1997-01-01 00:00:00

  • Measurement of cerebral blood flow in newborn infants using near infrared spectroscopy with indocyanine green.

    abstract::Cerebral blood flow (CBF) measurement by near infrared spectroscopy (NIRS) using oxyhemoglobin (HbO2) as a tracer (CBF-HbO2) needs rapid changes in arterial oxygen saturation (SaO2) which often cannot be achieved in many sick infants. An alternative method based on the same adaptation of the Fick principle using i.v. ...

    journal_title:Pediatric research

    pub_type: 杂志文章

    doi:10.1203/00006450-199801000-00006

    authors: Patel J,Marks K,Roberts I,Azzopardi D,Edwards AD

    更新日期:1998-01-01 00:00:00