Abstract:
:Unconjugated bilirubin promotes intestinal secretion without affecting nutrient digestion or absorption. In the current study, the effects of unconjugated bilirubin (UCB) on the barrier function of the intestinal epithelium were investigated. The apical side of human intestinal cell line Caco-2 monolayers was challenged with purified UCB. Transepithelial electrical resistance and paracellular fluxes of 10 kD Cascade blue conjugate dextran were measured. Cell monolayer viability was studied using LDH release and trypan blue exclusion tests. Redistribution of enterocyte tight junction occludin was studied by confocal microscopy. Bilirubin induced a dose-dependent decrease of transepithelial electrical resistance (TEER). This effect was maximal at 6 h and tended to be reversed at 48 h. Oxidated bilirubin was ineffective. Bilirubin significantly increased fluorescent dextran paracellular passage. Cell viability was not affected by UCB over the 5-200 nmol/L concentration range. Finally, bilirubin triggered a reversible redistribution of tight junctional occludin. UCB increases the permeability of intestinal epithelium. This effect is reversible, dependent on the redox status of the molecule and the rearrangement of the tight junction. These data attribute to bilirubin a novel role of functional modulator of intestinal paracellular permeability in vitro.
journal_name
Pediatr Resjournal_title
Pediatric researchauthors
Raimondi F,Crivaro V,Capasso L,Maiuri L,Santoro P,Tucci M,Barone MV,Pappacoda S,Paludetto Rdoi
10.1203/01.pdr.0000220344.09034.63subject
Has Abstractpub_date
2006-07-01 00:00:00pages
30-3issue
1eissn
0031-3998issn
1530-0447pii
01.pdr.0000220344.09034.63journal_volume
60pub_type
杂志文章abstract::We recently demonstrated that recombinant hGH exacerbates renal functional and structural injury in chronic puromycin aminonucleoside (PAN) nephropathy, an experimental model of glomerular disease. Therefore, we examined whether recombinant human (rh) IGF-I is a safer alternative for the treatment of growth failure in...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199601000-00002
更新日期:1996-01-01 00:00:00
abstract::The results of prior studies suggest that abnormalities of development and function of the fetal adrenal occur in pregnancies complicated by intrauterine fetal growth retardation (IUGR). In the present investigation, we sought to extend such studies by matching IUGR infants with normally grown infants of women in whom...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章
doi:10.1203/00006450-199406000-00003
更新日期:1994-06-01 00:00:00
abstract::Lung development progresses through a process reliant on mechanical cell stretch. However, this process is not well defined at the molecular level. Our goal was to globally analyze the transcriptome of fetal mouse lungs following short periods of tracheal occlusion (TO) to identify cellular processes that are rapidly ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/PDR.0b013e31815eba47
更新日期:2008-02-01 00:00:00
abstract::The etiology of the tall stature almost invariably seen in homocystinuric patients is not known. The effect of metabolic control and the role of the GH-IGF system on growth were investigated in 10 patients with homocystinuria. There was a direct correlation between the plasma free homocyst(e)ine and growth velocity SD...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-200106000-00014
更新日期:2001-06-01 00:00:00
abstract::Wolfram syndrome 1 (WS1) is a rare autosomal recessive neurodegenerative disease characterized by diabetes insipidus, diabetes mellitus, optic atrophy, deafness, and other abnormalities. WS1 usually results in death before the age of 50 years. The pathogenesis of WS1 is ascribed to mutations of human WFS1 gene on chro...
journal_title:Pediatric research
pub_type: 杂志文章,评审
doi:10.1038/pr.2018.17
更新日期:2018-05-01 00:00:00
abstract::To examine the levels and relationship of blood pressure and insulin during puberty, blood pressure and serum insulin were measured in 3596 subjects, aged 3-18 y, whose pubertal status was graded according to the Tanner classification. The same study protocol was repeated in two follow-up surveys 3 and 6 y later for 2...
journal_title:Pediatric research
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1203/00006450-199702000-00019
更新日期:1997-02-01 00:00:00
abstract::Meconium aspiration syndrome is a serious condition of the newborn characterized by pulmonary inflammation with substantial neutrophil infiltration. We recently showed that meconium is a potent activator of complement. The aim of the present study was to investigate a possible role for complement in meconium-induced n...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000150725.78971.30
更新日期:2005-02-01 00:00:00
abstract::Mucolipidosis 4 (ML4) is an autosomal recessive disorder with both lipid and mucopolysaccharide storage. The disease is characterized by severe visual impairment and psychomotor retardation. In our effort to find a phenotypic marker for ML4 fibroblasts, living cells were stained with fluorescent compounds. The stainin...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199506000-00003
更新日期:1995-06-01 00:00:00
abstract::The development of the intestinal mucosal immune barrier is an important protective adaptation for postnatal life. The distribution and phenotype of T and B lymphocytes in human fetal intestine and lymphoid tissues have been characterized and compared to the distribution and phenotype of lymphocytes in postnatal intes...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199003000-00007
更新日期:1990-03-01 00:00:00
abstract::This prospective randomized pilot study aimed to test the hypotheses that partial liquid ventilation combined with a high positive end-expiratory pressure (PEEP) and a moderate tidal volume results in improved gas exchange and lung mechanics without negative hemodynamic influences compared with conventional mechanical...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-200208000-00015
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:The aim of this study was to examine in detail levels and patterns of physical activity in preschool children and the effects of gender and BMI on this activity. METHODS:Two hundred and fifty-three children aged 5 y participating in the Copenhagen Prospective Studies on Asthma in Childhood wore an accelerom...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2013.99
更新日期:2013-09-01 00:00:00
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
更新日期:1985-10-01 00:00:00
abstract::We measured the changes in tidal volume, duration of the various phases of the respiratory cycle, and peak nasal pressure during elastic and resistive loading in preterm infants. Values were calculated during the first loaded breath, when chemical drive was unchanged. Tidal volume decreased by equivalent percentages w...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-197704000-00002
更新日期:1977-04-01 00:00:00
abstract::BackgroundSpecific HLA-DQ genes have been recognized as necessary - but not sufficient - factors for the occurrence of Celiac Disease (CD). Through a meta-analysis, evaluating the distribution of CD-related HLA genotypes in children, we aimed at providing insights for a potential widened screening strategy.MethodsAfte...
journal_title:Pediatric research
pub_type: 杂志文章,meta分析
doi:10.1038/pr.2017.307
更新日期:2018-03-01 00:00:00
abstract::The previous biochemical evidence had suggested that glutaric aciduria type II (GA II) is due to deficient dehydrogenation of multiple short-chain acyl coenzyme A's (CoA's), bu the precise biochemical mechanism underlying this disease was unknown. We investigated substrate oxidation and in vitro activities of isovaler...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198012000-00013
更新日期:1980-12-01 00:00:00
abstract:BACKGROUND:Bicuspid aortic valve (BAV) is the most common type of congenital heart disease (CHD) and has a proposed genetic etiology. BAV is categorized by cusp fusion, with right-left (R-L) cusp fusion being associated with additional CHD, and right-noncoronary cusp (R-NC) fusion being associated with aortic valve dys...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2014.67
更新日期:2014-08-01 00:00:00
abstract:BACKGROUND:Postnatal growth restriction (PNGR) in premature infants increases risk of pulmonary hypertension (PH). In a rodent model, PNGR causes PH, while combining PNGR and hyperoxia increases PH severity. We hypothesized that PNGR causes intestinal dysbiosis and that treatment with a probiotic attenuates PNGR-associ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-019-0578-2
更新日期:2020-02-01 00:00:00
abstract::Chloroform:methanol extracts of bovine pulmonary surfactant contain small hydrophobic proteins, designated surfactant-associated apoproteins 6,000 (SAP-6), but do not contain the major surfactant-associated 35,000-dalton glycoprotein, designated SAP-35. Examination of lipid extract surfactant on sodium dodecylsulfate-...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198801000-00006
更新日期:1988-01-01 00:00:00
abstract::Zidovudine (azidothymidine, AZT) is used in pregnancy to reduce mother to infant transmission of HIV. Understanding the disposition of AZT in the fetus is necessary to optimize therapeutic regimens directed toward the fetus. Recent studies in primates found similar steady-state levels of the glucuronide metabolite of ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199807000-00008
更新日期:1998-07-01 00:00:00
abstract::Uteroplacental insufficiency increases the risk of perinatal and long-term neurologic morbidity by depriving the fetus of oxidative substrate and causing intrauterine growth retardation. Skeletal muscle and liver from growth retarded fetal and juvenile rats respond to this deprivation by altering mitochondrial gene ex...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-200006000-00019
更新日期:2000-06-01 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
pub_type: 杂志文章
doi:10.1203/00006450-199202000-00008
更新日期:1992-02-01 00:00:00
abstract:BACKGROUND:Necrotising enterocolitis (NEC) and late-onset sepsis (LOS) are the leading causes of death among preterm infants in the developed world. This study aimed to explore the serum proteome and metabolome longitudinally in preterm infants with NEC or LOS, matched to controls. METHODS:Nineteen patients (10 cases,...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2015.235
更新日期:2016-03-01 00:00:00
abstract::The association between lung injury and thrombocytopenia was investigated by comparing the megakaryocyte and platelet counts, and platelet activation using P-selectin as a marker, between the prepulmonary (right atrial) and postpulmonary (left atrial) blood in adult and neonatal (preterm and term) rats with and withou...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/01.PDR.0000079186.86219.29
更新日期:2003-09-01 00:00:00
abstract:BACKGROUND:Cardiovascular instability immediately after birth is associated with intraventricular hemorrhage (IVH) in very-low-birth-weight (VLBW) infants. For circulatory management, evaluation of organ blood flow is important. In this study, the relationship between peripheral perfusion within 48 h after birth and IV...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2013.215
更新日期:2014-02-01 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
pub_type: 杂志文章
doi:10.1203/00006450-198404000-00014
更新日期:1984-04-01 00:00:00
abstract:BACKGROUND:Intrauterine growth restriction (IUGR) has been linked to heart disease in adulthood. Hence the IUGR heart is likely to be vulnerable to diabetic heart disease. The aim of this study was to examine the effect of induction of type 1 diabetes on myocardial collagen deposition and cardiac function in adult rats...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/pr.2012.94
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Maternal thyroid deficiency can increase Rho-kinase procontractile influence in arteries of 2-week-old progeny. Here we hypothesized that augmented role of Rho-kinase persists in arteries from adult progeny of hypothyroid rats. METHODS:Dams were treated with 6-propyl-2-thiouracil (PTU) in drinking water (0....
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1038/s41390-018-0029-5
更新日期:2018-07-01 00:00:00
abstract::Biochemical analysis and morphologic observation of the iliac crest cartilage from 8-year-old girl with I-cell disease were performed. Instead of hypertrophic change of chondrocytes in the zone of cartilage-bone junction, there were small atrophic cells having many inclusion bodies accumulated with lamellar materials....
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-198104000-00008
更新日期:1981-04-01 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
pub_type: 杂志文章
doi:10.1203/00006450-198206000-00018
更新日期:1982-06-01 00:00:00
abstract::Thrombocytopenia in the first days of life, in association with evidence of reduced megakaryocytopoiesis and platelet production at birth, is common in sick preterm babies. Thrombopoietin (Tpo) is the major regulator of platelet production in adults. However, these babies have low Tpo levels at birth, suggesting that ...
journal_title:Pediatric research
pub_type: 杂志文章
doi:10.1203/00006450-199907000-00005
更新日期:1999-07-01 00:00:00