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

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

更新日期：1984-08-01 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

authors： Davies JM,Tweed WA

更新日期：1984-08-01 00:00:00

abstract：:Bacterial sepsis is a relatively common problem in the neonatal period, particularly among prematurely delivered infants. The newborn rat has been widely used as a model for sepsis neonatorum, and in that model incomplete development of the neutrophil system has been postulated to be an important factor predisposing n...

journal_title：Pediatric research

authors： Christensen RD,Rothstein G

更新日期：1984-07-01 00:00:00

abstract：:A son of related Turkish parents had grossly elevated serum tyrosine concentration and excreted tyrosine and p-hydroxyphenolic acids into the urine, whereas neither succinylacetone nor succinylacetoacetate could be demonstrated. The tyrosine concentration was normalized by a proper diet. This was not followed strictly...

journal_title：Pediatric research

authors： Andersson S,Nemeth A,Ohisalo J,Strandvik B

更新日期：1984-07-01 00:00:00

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

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

更新日期：1984-07-01 00:00:00

abstract：:Patency of the ductus arteriosus in preterm infants is mediated by vasodilating prostanoids; however, reliable methods to monitor prostanoid activity or production in preterm infants are lacking. We measured the excretion rates of major and characteristic urinary metabolites of prostacyclin (PGI2), PGE1, and PGE2, 6-k...

journal_title：Pediatric research

authors： Seyberth HW,Müller H,Ulmer HE,Wille L

更新日期：1984-06-01 00:00:00

abstract：:A child presented with obstructive sleep apnea (OSA) and a near-fatal airway obstruction and respiratory arrest shortly after receiving chloral hydrate (CH). We, therefore, hypothesize that CH might selectively depress upper airway maintaining muscles such as the genioglossus and so predispose to airway obstruction. G...

journal_title：Pediatric research

authors： Hershenson M,Brouillette RT,Olsen E,Hunt CE

更新日期：1984-06-01 00:00:00

abstract：:The present study employed an animal model in an attempt to document effects on brain growth of long-term exposure to theophylline in the presence or absence of malnutrition. One group of dams was randomly divided into half. One-half was fed a 20% protein diet and the other half a 6% protein diet. Similarly, a second ...

journal_title：Pediatric research

authors： Quinby GE Jr,Nakamoto T

更新日期：1984-06-01 00:00:00

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

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

更新日期：1984-05-01 00:00:00

abstract：:In spontaneously breathing newborn lambs, alveolar hypoxia increases lung microvascular pressure, which causes lung lymph flow to increase and the concentration of protein in lymph to decrease. To see if this response derives from hypoxia itself rather than from the change in breathing pattern that occurs during hypox...

journal_title：Pediatric research

authors： Hansen TN,Haberkern CM,Hazinski TA,Bland RD

更新日期：1984-05-01 00:00:00

abstract：:Rats were fed a 50% galactose diet during pregnancy and nursing, and the testes were later examined and hormone levels determined in male offspring. Exposure to galactose for various periods during pregnancy, throughout the entire gestation, or postnatally to nursing mother until pups were 5 wk of age produced no sign...

journal_title：Pediatric research

authors： Chen YT,Mattison DR,Bercu BB,Schulman JD

更新日期：1984-04-01 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

authors： Bachmann C,Colombo JP

更新日期：1984-04-01 00:00:00

abstract：:Automated microanalytic chromogenic coagulation assays allow serial monitoring of critically ill newborn infants. In this study 84 premature infants [26 healthy prematures and 58 neonates with idiopathic respiratory distress syndrome (IRDS)] were studied daily during the first week of life, to investigate the possible...

journal_title：Pediatric research

authors： Peters M,Ten Cate JW,Breederveld C,De Leeuw R,Emeis J,Koppe J

更新日期：1984-03-01 00:00:00

abstract：:To evaluate the maturation of glucose homeostasis in the small for gestational age (SGA) neonate, glucose kinetics were measured with 78% enriched D-[U-13C]glucose by the prime plus constant infusion technique in nine SGA infants and compared with the rate obtained in seven term appropriate for gestational age infants...

journal_title：Pediatric research

authors： Cowett RM,Susa JB,Oh W,Schwartz R

更新日期：1984-01-01 00:00:00

abstract：:N-formyl-L-methionyl-L-leucyl-L-phenylalanine (FMLP) and N-formyl-L-methionyl-L-phenylalanine (FMP) were used to investigate neutrophil (PMN) aggregation. Neutrophils were isolated from healthy adult volunteers and term newborn cord blood. Neutrophil aggregation was measured after the addition of FMLP and FMP. Adult P...

journal_title：Pediatric research

authors： Olson TA,Ruymann FB,Cook BA,Burgess DP,Henson SA,Thomas PJ

更新日期：1983-12-01 00:00:00

abstract：:A study using fractional clearances during orally induced water diuresis was designed to delineate the mechanism underlying defective tubular reabsorption of sodium in very low-birth-weight neonates. The use of clearance methodology during maximal water diuresis may give an indirect estimate of distal sodium delivery ...

journal_title：Pediatric research

authors： Rodríguez-Soriano J,Vallo A,Oliveros R,Castillo G

更新日期：1983-12-01 00:00:00

abstract：:Energy and nitrogen balances were measured in growing low birthweight infants fed either mother's expressed breast milk or a 20 kcal per ounce formula to determine whether or not there were differences between the two dietary groups in (1) the partition of energy among excretion, expenditure, and storage and (2) the r...

journal_title：Pediatric research

authors： Whyte RK,Haslam R,Vlainic C,Shannon S,Samulski K,Campbell D,Bayley HS,Sinclair JC

更新日期：1983-11-01 00:00:00

abstract：:Groups of newborn rats were transthoracically inoculated with 1 X 10(6) type III group B streptococci/g body wt, either alone or in combination with 1.5 microgram/g body wt of type-specific antibody derived from hybridoma cell lines. Ninety-four percent of the animals who received bacteria alone died. In contrast, non...

journal_title：Pediatric research

authors： Christensen RD,Rothstein G,Hill HR,Pincus SH

更新日期：1983-10-01 00:00:00

abstract：:Surface active aerosols were produced from aqueous dispersions of mixed lipids (CLL), extracted from bovine lung lavage. Particle size distributions were measured as a function of humidity for two types of aerosol generators: ultrasonic and jet. Lipid dispersions before aerosolization were prepared by sonication in an...

journal_title：Pediatric research

authors： Marks LB,Notter RH,Oberdorster G,McBride JT

更新日期：1983-09-01 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

authors： Neu J,Hoffmann RG,Crim WN

更新日期：1983-07-01 00:00:00

abstract：:Various assay methods for detection of thyroid hormones in human milk were evaluated in recovery and dilution experiments after which the concentrations of thyroxine (T4) and 3,5,3'-triiodothyronine (T3) were measured and compared with those in serum. The effect of breast feeding on pituitary thyroid function of norma...

journal_title：Pediatric research

authors： Mizuta H,Amino N,Ichihara K,Harada T,Nose O,Tanizawa O,Miyai K

更新日期：1983-06-01 00:00:00

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

authors： Williams BJ,Drummond WH

更新日期：1983-06-01 00:00:00

abstract：:Intrahepatic and intracerebral metabolic responses to neonatal fasting or enteric carbohydrate alimentation were investigated among newborn dogs. Pups were either fasted or given an intravenous glucose infusion (alimented) before an enteric feeding of physiologic quantities of either glucose or galactose. These pups w...

journal_title：Pediatric research

authors： Kliegman RM,Miettinen EL,Morton SK

更新日期：1983-04-01 00:00:00

abstract：:Opsonisation of heat-killed bakers yeast and C3 and C4 concentrations were determined in sera from 69 children with liver disease and 39 controls as simple screening procedures for abnormalities in the complement system. Where significant defects in these moieties were encountered, the activity of the following was me...

journal_title：Pediatric research

authors： Larcher VF,Wyke RJ,Vergani D,Mowat AP,Williams R

更新日期：1983-04-01 00:00:00

abstract：:We report energy intake and selected nutrient intakes-protein, fat (total, saturated, and polyunsaturated), carbohydrate (total, starch, and sucrose), and cholesterol-for 1251 white children ages 6-19 years. The data were obtained, by means of a 24-h dietary recall, from children who were randomly selected from the No...

journal_title：Pediatric research

authors： Salz KM,Tamir I,Ernst N,Kwiterovich P,Glueck C,Christensen B,Larsen R,Pirhonen D,Prewitt TE,Scott LW

更新日期：1983-02-01 00:00:00

abstract：:Genetic typing of serum transferrin was performed in a group of 88 extremely premature infants (gestation age less than 32 wk) and in a control group of 351 full-term infants, using isoelectric focusing technique on ultrathin layer of polyacrilamide gel. A major incidence of C2 type was found among the preterm infants...

journal_title：Pediatric research

authors： Auconi P,Biagini R,Colarizi P,Pascali V

更新日期：1982-12-01 00:00:00

abstract：:Premature newborn rabbits, delivered by hysterotomy on day 27 of gestation, were tracheotomized at birth, kept in body plethysmographs, and subjected to pressure-generated ventilation at a working pressure of 25 cm H2O, 100% O2, and frequency 40/min. Thirty-seven animals received 50 microliters of heterologous surfact...

journal_title：Pediatric research

authors： Lachmann B,Berggren P,Curstedt T,Grossmann G,Robertson B

更新日期：1982-11-01 00:00:00

abstract：:The activity of lysozyme in saliva and serum was determined in 51 patients with cystic fibrosis. Measurements were made on two occasions at least 1 month apart and compared to those of 25 normal healthy individuals of the same ages, sex, and race. The mean serum lysozyme activity of normal individuals was 5.8 microgra...

journal_title：Pediatric research

authors： Hughes WT,Koblin BA,Rosenstein BJ

更新日期：1982-10-01 00:00:00

abstract：:Sequential magnitude and the rate of change in tracheal mechanics after application of intermittent positive pressure (IPP), and the time constant, tau, of this deformation were determined in fetal (21 and 27 days gestation), neonatal (term, 31 days gestation) and adult rabbits. In vitro tracheal mechanics were determ...

journal_title：Pediatric research

authors： Bhutani VK,Shaffer TH

更新日期：1982-10-01 00:00:00

abstract：:Serial plasma concentrations of immunoreactive 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha), the stable hydration product of prostacyclin (PGI2), were measured with radioimmunoassay during the first month of life in 25 preterm infants with idiopathic respiratory distress syndrome (IRDS) and 38 preterm controls wi...

journal_title：Pediatric research

authors： Kääpä P,Koivisto M,Viinikka L,Ylikorkala O

更新日期：1982-10-01 00:00:00

abstract：:The in vitro incorporation and transport of plasma nonesterified fatty acids into phospholipids of red cell membranes have been studied in cystic fibrosis and healthy children. Red blood cells were labeled in vitro by an active "acyltransferase"-dependent incorporation of radioactively labeled nonesterified fatty acid...

journal_title：Pediatric research

authors： Rogiers V,Mandelbaum I,Mozes N,Vertongen F,Dab I,Crokaert R,Vis HL

更新日期：1982-09-01 00:00:00

abstract：:Mucosal samples from rabbit jejunum were incubated (30 min, 25 degrees C) with (125I)glycinin in the presence of buffer, soybean lectin (50 micrograms/ml) soyasaponins (1 mg/ml), or both lectin and saponins. The mucosal uptake of (125I)glycinin was negligible with buffer, and increased progressively with additions of ...

journal_title：Pediatric research

authors： Alvarez JR,Torres-Pinedo R

更新日期：1982-09-01 00:00:00

abstract：:The length of the Y chromosome was measured in 42 black patients with trisomy 21 (47,XY,+21) and a similar number of normal individuals of American black ancestry. The length of the Y was expressed as a function of Y/F ratio and arbitrarily classified into five groups using subjectively defined criteria as follows: ve...

journal_title：Pediatric research

authors： Verma RS,Huq A,Madahar C,Qazi Q,Dosik H

更新日期：1982-09-01 00:00:00

abstract：:The specific activities of four folate enzymes have been measured in livers from preterm infants (Group 1), full-term infants (Group 2), and from control subjects (Group 3). The four enzymes studied were methylene tetrahydrofolate reductase (EC 1.1.1.68), methionine synthetase (EC 2.1.1.13), methylenetetrahydrofolate ...

journal_title：Pediatric research

authors： Kalnitsky A,Rosenblatt D,Zlotkin S

更新日期：1982-08-01 00:00:00

abstract：:Alterations in thermoregulatory mechanisms related to sleep state may play an important role in the problems of homeostasis experienced by the premature infant. In the adult, homeothermic regulation of body temperature may be suspended during REM. We measured oxygen consumption (VO2) in six premature infants 33-35 wk ...

journal_title：Pediatric research

authors： Darnall RA Jr,Ariagno RL

更新日期：1982-07-01 00:00:00

abstract：:Normal hemostasis depends in part on the balance achieved between proaggregatory and prothrombotic platelet thromboxane A2, measured as its stable end-product thromboxane B2 (TXB2), and vascular prostacyclin (PGI2), which inhibits platelet aggregation and is antithrombotic. Cystathionine-beta-synthase deficiency is ch...

journal_title：Pediatric research

authors： Graeber JE,Slott JH,Ulane RE,Schulman JD,Stuart MJ

更新日期：1982-06-01 00:00:00

abstract：:Concanavalin A surface receptors were detected on brush border enterocytes from child intestinal biopsies by the concanavalin A-peroxidase method. On electron microscopy, these receptors appeared as electron-dense deposits, located on a band running along the innermost part of the brush border membrane glycocalyx. In ...

journal_title：Pediatric research

authors： Vasmant D,Feldmann G,Fontaine JL

更新日期：1982-06-01 00:00:00

abstract：:Circadian rhythms of plasma renin activity (PRA) and plasma aldosterone (PA) were studied in eight healthy children, 7 to 15 years old. Blood samples were obtained at 7:00 AM, 10:00 AM, 1:00 PM, 4:00 PM, 5:00 PM, 8.00 PM, and midnight on day 1 and 4:00 AM and 7:00 AM on day 2. Children had normal activity during this ...

journal_title：Pediatric research

authors： Dechaux M,Broyer M,Lenoir G,Limal JM,Sachs C

更新日期：1982-05-01 00:00:00

abstract：:A new model has been developed for the study of maternal phenylketonuria. Beginning on the 12th day of gestation the diet of pregnant rats was supplemented with 0.5% alpha-methylphenylalanine and 3% phenylalanine. This resulted in an 83% reduction of hepatic phenylalanine hydroxylase activity. The maternal plasma phen...

journal_title：Pediatric research

authors： Brass CA,Isaacs CE,McChesney R,Greengard O

更新日期：1982-05-01 00:00:00

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

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

更新日期：1982-04-01 00:00:00