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

authors： Mark JA,Maines MD

更新日期：1992-09-01 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

authors： Fowlkes J,Freemark M

更新日期：1992-08-01 00:00:00

abstract：:We investigated, using a human placental choriocarcinoma cell line as a model, the effects of the immunosuppressive drug cyclosporin A on several placental transport systems mediating the transfer of glucose and amino acids from mother to fetus. The results of the investigation show that the transport system responsib...

journal_title：Pediatric research

authors： Ramamoorthy S,Leibach FH,Mahesh VB,Ganapathy V

更新日期：1992-07-01 00:00:00

abstract：:We assessed the kinetics of hyperoxia-induced prostaglandin E2 (PGE2) production by cultured rabbit tracheal epithelial (TE) cells with different inherent capacities to generate PGE2 and the role of endogenous PGE2 production in protecting these cells from hyperoxic injury. Rabbit TE cells grown to confluence with or ...

journal_title：Pediatric research

authors： Dennery PA,Walenga RW,Kramer CM,Alpert SE

更新日期：1992-07-01 00:00:00

abstract：:Respiratory parameters of skeletal muscle were determined in permeabilized muscle fibers by adapting a technique described by Veksler et al. for cardiac fibers (Biochim Biophys Acta, 892:191-196, 1987). This method consists of the permeabilization of muscle fibers by saponin by allowing respiratory substrates and inhi...

journal_title：Pediatric research

authors： Letellier T,Malgat M,Coquet M,Moretto B,Parrot-Roulaud F,Mazat JP

更新日期：1992-07-01 00:00:00

abstract：:Cardiovascular responses to feeding have been observed in several species during various periods of development and have been implicated in the development of cardiovascular regulation. In the rat, these responses are characterized by short-lasting, large increases in blood pressure (BP) and moderate increases in hear...

journal_title：Pediatric research

authors： Scalzo FM

更新日期：1992-07-01 00:00:00

abstract：:Previous studies in mature fetal sheep have shown that alcohol depresses cerebral blood flow (CBF), cerebral O2 consumption (CMRO2), and cerebral glucose consumption (CMRglu). This effect earlier in gestation might contribute to the pathogenesis of fetal alcohol syndrome. Physiologic studies of immature fetal sheep ha...

journal_title：Pediatric research

authors： Gleason CA,Hotchkiss KJ

更新日期：1992-06-01 00:00:00

abstract：:We evaluated bone mineralization by single photon absorptiometry at 2 y in a cohort of preterm infants studied since birth. Infants were fed human milk fortified with Ca [to achieve 80 mg/dL (19.96 mmol/L)] and P [40 mg/dL (12.91 mmol/L)] from wk 2 through 8 after birth. After hospital discharge, infants were divided ...

journal_title：Pediatric research

authors： Schanler RJ,Burns PA,Abrams SA,Garza C

更新日期：1992-06-01 00:00:00

abstract：:The sp act of galactose-1-phosphate uridyltransferase has been measured in individual regions of adult rat brain to see if site-specific differences in enzyme activity can aid in the understanding of brain abnormalities observed in well-treated galactosemic patients. The sp act in the cerebellum, brain stem, and midbr...

journal_title：Pediatric research

authors： Rogers S,Heidenreich R,Mallee J,Segal S

更新日期：1992-05-01 00:00:00

abstract：:Neonatal animals of several species are more tolerant of hyperoxic exposure than are adults, but the mechanisms of increased neonatal tolerance are unknown, as are the cell types, if any, that contribute to oxygen resistance. We studied the effect of in vivo exposure to 85% oxygen for 72 h on the activities of the ant...

journal_title：Pediatric research

authors： Keeney SE,Cress SE,Brown SE,Bidani A

更新日期：1992-05-01 00:00:00

abstract：:Previous studies have demonstrated that myocardial function changes during mammalian perinatal development. The purpose of this study was to evaluate the subcellular basis underlying the slower relaxation in the developing heart by examining perinatal changes in sarcoplasmic reticulum (SR) function, and in SR Ca2+ pum...

journal_title：Pediatric research

authors： Fisher DJ,Tate CA,Phillips S

更新日期：1992-05-01 00:00:00

abstract：:The fibroblast of the fetal and neonatal lung is intimately involved with lung development and function. Additionally, the perinatal rat lung fibroblast is a significant source of prostaglandins (PG) I2 and E2, which in turn affect lung development and function. Their effects may be mediated by cAMP. We, therefore, te...

journal_title：Pediatric research

authors： Teixeira FJ,Bevan ML,Olson DM

更新日期：1992-04-01 00:00:00

abstract：:Very young children with organic brain damage, intractable seizures, and developmental retardation are at particular risk of developing fatal hepatic dysfunction coincident with valproate therapy, especially if the children are also receiving other anticonvulsant drugs. The mechanism of valproate-associated hepatic fa...

journal_title：Pediatric research

authors： Thurston JH,Hauhart RE

更新日期：1992-04-01 00:00:00

abstract：:Bronchopulmonary dysplasia (BPD) is a common pulmonary complication in preterm infants that leads to fibrosis of the bronchoalveolar walls and often to severe clinical consequences. Type III collagen is deposited early in progressive fibrosis. Because the N-terminal propeptide of type III collagen (PIIINP), a by-produ...

journal_title：Pediatric research

authors： Heikinheimo M,Halila R,Marttinen E,Raivio K

更新日期：1992-04-01 00:00:00

abstract：:The copper concentrations in organs of developing Long-Evans Cinnamon (LEC) rats (2 d to 13 mo) were measured to elucidate the pathogenesis of their hereditary hepatitis. Hepatic copper contents of LEC rats were significantly higher than those of control rats (26 to 92 times higher). The subcellular distribution of he...

journal_title：Pediatric research

authors： Okayasu T,Tochimaru H,Hyuga T,Takahashi T,Takekoshi Y,Li Y,Togashi Y,Takeichi N,Kasai N,Arashima S

更新日期：1992-03-01 00:00:00

abstract：:Hypercholesterolemia is common in preterm infants administered 10% Intralipid perhaps because of excess phospholipid in plasma causing efflux of cholesterol from tissues. The purpose of this study was to determine if cholesterol synthesis (as measured by plasma lathosterol) is increased in preterm infants (23-32 wk ge...

journal_title：Pediatric research

authors： Hamilton JJ,Phang M,Innis SM

更新日期：1992-02-01 00:00:00

abstract：:The effect of intrauterine growth retardation (IUGR) on cerebral and adrenal monoamine metabolism was studied in the fetuses of eight nulliparous rat dams after unilateral uterine artery ligation on d 18 of gestation. On d 22 (term = 23 d), four dams were subjected to normoxia and four to hypoxia (10% O2) for 58 min w...

journal_title：Pediatric research

authors： Thordstein M,Hedner T

更新日期：1992-02-01 00:00:00

abstract：:The effect of increased red blood cell aggregation on uteroplacental blood flow was studied in 11 awake, late-pregnant guinea pigs. The aggregation of the red cells was increased by administering high molecular weight dextran (HMWD) to the previously hemoconcentrated animal. The purpose of the hemoconcentration before...

journal_title：Pediatric research

authors： Verkeste CM,Boekkooi PF,Saxena PR,Peeters LL

更新日期：1992-01-01 00:00:00

abstract：:Our objective was to determine the quantitative changes of individual triacylglycerol (TG) species in liver and carcass during early postnatal growth. Pregnant rats were killed at d 21 of pregnancy, and neonatal rats were killed at d 3 or 9 after birth. Quantitative changes in fatty acids and TG species of fetal/neona...

journal_title：Pediatric research

authors： Chen ZY,Cunnane SC

更新日期：1992-01-01 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

authors： Silverstein FS,Naik B,Simpson J

更新日期：1991-12-01 00:00:00

abstract：:Localized proton magnetic resonance spectra were recorded from human cerebellum in vivo with a 1.5-T magnet. The spectra from healthy adults and preterm and term babies showed resonances from N-acetylaspartate, creatine and phosphocreatine, choline-containing compounds such as phosphocholine and glycerophosphocholine,...

journal_title：Pediatric research

authors： Hüppi PS,Posse S,Lazeyras F,Burri R,Bossi E,Herschkowitz N

更新日期：1991-12-01 00:00:00

abstract：:Lipase activities were measured at pH 4 and pH 8 in the placentas of rats made diabetic by streptozotocin treatment and also in the placentas of women classified as having 1) impaired glucose tolerance or type 2 diabetes, 2) type 1 diabetes with no associated vascular complication, and 3) type 1 diabetes with associat...

journal_title：Pediatric research

authors： Kaminsky S,Sibley CP,Maresh M,Thomas CR,D'Souza SW

更新日期：1991-12-01 00:00:00

abstract：:The fetal and maternal concentration of various plasma proteins alters during pregnancy. Cells in the livers of fetal hamsters accumulate serum amyloid A (SAA) and C-reactive protein (CRP) mRNA, major acute phase reactants, when lipopolysaccharide is administered to the fetal circulation. No fetal SAA or CRP mRNA resp...

journal_title：Pediatric research

authors： Dowton SB,Waggoner DJ,Mandl KD

更新日期：1991-11-01 00:00:00

abstract：:Although fetal asphyxia, i.e. hypoxemia, acidosis, and hypercapnia, increases plasma arginine vasopressin (AVP) greater than 40-fold, hypoxemia and metabolic acidosis occurring independently cause only 5-fold and 2-fold increases, respectively. To determine the effects of hypercapnia on AVP release, we examined the ef...

journal_title：Pediatric research

authors： Faucher DJ,Laptook AR,Porter JC,Rosenfeld CR

更新日期：1991-10-01 00:00:00

abstract：:We studied absorption of the potentially allergenic protein beta-lactoglobulin during acute rotavirus diarrhea in infants and assessed the relationship of this macromolecular absorption with intestinal sugar permeability. After oral rehydration, 38 patients with acute gastroenteritis were given orally a 100-ml solutio...

journal_title：Pediatric research

authors： Jalonen T,Isolauri E,Heyman M,Crain-Denoyelle AM,Sillanaukee P,Koivula T

更新日期：1991-09-01 00:00:00

abstract：:Developmental differences in myocardial performance are known to exist. It is likely that the profile of protein isoforms present on the developing thin filament contributes to these observed differences. We have prepared thin filaments from developing and mature rat hearts by using an immunoprecipitation procedure de...

journal_title：Pediatric research

authors： L'Ecuyer TJ,Schulte D,Lin JJ

更新日期：1991-09-01 00:00:00

abstract：:We examined 78 fetuses on d 21 of gestation (G21) and 83 neonates on d 2 after birth (A2), which were first generation offspring of WKY rats mated with normal Wistar rats (F1). In addition, we examined six groups of fetuses on d 19 of gestation (G19): 65 Wistar rats, 111 WKY rats, 85 F1, 100 F1 X F1, 92 F1 X Wistar, a...

journal_title：Pediatric research

authors： Kuribayashi T,Taniwaki M,Nakamichi K,Nakamura T,Shimoo K,Nakagawa M,Nagaoka A,Komeda T,Ibata Y

更新日期：1991-09-01 00:00:00

abstract：:Plasma, amniotic fluid, and tissue concentrations of IGF-I were examined in nutritionally deprived, growth-retarded fetal rats to determine whether IGF-I concentration serves as a marker for nutritional status. Growth retardation was induced by 72 h of maternal fasting. Twenty-three control and 17 growth-retarded fetu...

journal_title：Pediatric research

authors： Bernstein IM,DeSouza MM,Copeland KC

更新日期：1991-08-01 00:00:00

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

authors： Engström E,Haglund A,Eriksson UJ

更新日期：1991-08-01 00:00:00

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 aft...

journal_title：Pediatric research

authors： Kercsmar CM,Chung Y,Davis PB

更新日期：1991-07-01 00:00:00

abstract：:Thyrotropin releasing hormone (TRH) and its precursor peptide pGlu-His-Pro-Gly (TRH-Gly) were measured in serum and in a variety of tissues of developing rats using specific RIA. TRH and TRH-Gly immunoreactivities were detected in most tissues. TRH concentrations were highest in pancreas, in which mean (+/- SEM) TRH c...

journal_title：Pediatric research

authors： Fuse Y,Polk DH,Lam RW,Fisher DA

更新日期：1991-07-01 00:00:00

abstract：:Young adult macrosomic offspring of streptozotocin-induced mildly hyperglycemic rats exhibit accelerated growth through the first 10 wk of age. At 10 wk, oral glucose loading resulted in elevated plasma insulin and glucose concentrations compared to controls. To assess the mechanism of the abnormal glucose tolerance i...

journal_title：Pediatric research

authors： Gelardi NL,Cha CJ,Oh W

更新日期：1991-07-01 00:00:00

abstract：:The response of cerebral blood volume (CBVR) to a small induced change in arterial carbon dioxide tension was studied by near-infrared spectroscopy in 17 newborn infants born from 26 wk of gestation to term. All 17 infants were undergoing mechanical ventilation but had apparently normal brains. The CBVR per kPa change...

journal_title：Pediatric research

authors： Wyatt JS,Edwards AD,Cope M,Delpy DT,McCormick DC,Potter A,Reynolds EO

更新日期：1991-06-01 00:00:00

abstract：:We studied chloride efflux from isolated rabbit pancreatic acini in suspension, by loading with 36Cl to steady state and rapidly washing acini by filtration to determine 36Cl cpm/micrograms DNA remaining. Linear loss of acinar chloride occurred over 5 min (k = 0.038 +/- 0.008 min-1, n = 5). Forskolin (5 x 10(-5) M) in...

journal_title：Pediatric research

authors： Kopelman H,Gauthier C

更新日期：1991-06-01 00:00:00

abstract：:Twelve-h overnight urine and serum samples obtained simultaneously at 20-min intervals were assayed for growth hormone (GH). Ninety-one children, 5 to 16 y (Tanner stage 1 to 3) participated; group 1 were healthy children, group 2 were children with organic GH deficiency, and group 3 had idiopathic growth failure and ...

journal_title：Pediatric research

authors： Albini CH,Sotos J,Sherman B,Johanson A,Celniker A,Hopwood N,Quattrin T,Mills BJ,MacGillivray MH

更新日期：1991-06-01 00:00:00

abstract：:To define respiratory effects of peripheral acidemia during early development, we injected lactic acid (LA) into the jugular vein of 32 1- to 7-d-old rabbit pups and four adult rabbits. The body weight of newborns varied between 67 +/- 17 g in 1-d-old and 119.8 +/- 33.7 g in 7-d-old animals versus 4 +/- 0.1 kg in adul...

journal_title：Pediatric research

authors： Ducros G,Trippenbach T

更新日期：1991-06-01 00:00:00

abstract：:In its normal circulatory environment, the fetal left ventricle can maximally increase output less than 2-fold, in contrast to the nearly 3-fold increase that occurs at birth. Several studies have attributed this finding to fetal myocardial "immaturity," and speculated that there is a rapid maturation of the myocardiu...

journal_title：Pediatric research

authors： Teitel DF,Dalinghaus M,Cassidy SC,Payne BD,Rudolph AM

更新日期：1991-05-01 00:00:00

abstract：:Hypothalamic growth hormone releasing hormone (GHRH) stimulates pituitary growth hormone secretion, which is essential for normal postnatal growth. Reports of an immunoreactive and biologically active GHRH-like peptide in placenta led us to investigate placental expression of GHRH mRNA. Placentas from d 19 gestation f...

journal_title：Pediatric research

authors： Pescovitz OH,Johnson NB,Berry SA

更新日期：1991-05-01 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

authors： Castro R,Ervin MG,Leake RD,Ross MG,Fisher DA

更新日期：1991-04-01 00:00:00

abstract：:The perinatal ontogeny of preprotachykinin-A gene expression was assessed in central respiration-related structures. On the day of birth, there was an enhanced expression of preprotachykinin-A mRNA in the region of the nucleus tractus solitarii, the primary relay station for respiratory and cardiovascular reflexes. Th...

journal_title：Pediatric research

authors： Srinivasan M,Yamamoto Y,Persson H,Lagercrantz H

更新日期：1991-04-01 00:00:00