| 1. |
- Stoltz Sjöström, Elisabeth, et al.
(författare)
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Micronutrient Intakes Affect Early Growth in Extremely Preterm Infants : Preliminary Results from a Swedish Cohort
- 2011
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Ingår i: Pediatric Research. - : Nature Publishing Group. - 1530-0447 .- 0031-3998.
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Konferensbidrag (refereegranskat)abstract
- Background: Extremely preterm infants generally experience postnatal growth failure. It is still unclear if this is related to micronutrient intakes.Aim: To investigate the effect of micronutrient intakes (calcium, zinc, iron, phosphorus, sodium, potassium, chloride, magnesium, vitamin A, vitamin D, vitamin E, folate and vitamin B12) on growth during the first 28 days of life in extremely preterm infants.Method: From the EXPRESS cohort (all infants born < 27 gestational weeks between 2004-2007 in Sweden), those who survived the first 28 days were included (n=524). Daily parenteral and enteral intakes and anthropometric measurements were retrieved from hospital records.Results: Preliminary analyses of data from 333 infants (mean±SD gestational age 25.2±1.0 weeks, birth weight 753±168g) showed that macronutrient intakes were lower than recommended (energy 98±13kcal/kg/day, protein 2.9±0.4g/kg/day). Infants showed postnatal growth failure: mean standard deviation scores decreased by 2.2 for weight, 2.3 for length and 1.4 for head circumference. Intakes of micronutrients were generally low, e.g. adjusted enteral intakes of calcium were 66.6±21.4 mg/kg/day. The exception was iron, with a high parenteral intake of 2.7±1.6 mg/kg/day, mainly from blood transfusions. Adjusting for protein intake and other confounders, calcium intakes were positively correlated with head growth (r=+0.19, p=0.006) and iron intakes were negatively correlated with length gain (r=-0.18, p=0.009).Conclusions: Low calcium intakes and high iron intakes were associated with poor growth with regard to head circumference and length, respectively. If these results are confirmed, optimized micronutrient intakes may improve early growth in extremely preterm infants.
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| 2. |
- Abelius, Martina S, et al.
(författare)
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High cord blood levels of the T-helper 2-associated chemokines CCL17 and CCL22 precede allergy development during the first 6 years of life
- 2011
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Ingår i: Pediatric Research. - 0031-3998 .- 1530-0447. ; 70:5, s. 495-500
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Tidskriftsartikel (refereegranskat)abstract
- Exposure to a strong T-helper 2 (Th2)-like environment during fetal development may promote allergy development. Increased cord blood (CB) levels of the Th2-associated chemokine CCL22 were associated with allergy development during the first 2 y of life. The aim of the present study was to determine whether CB Th1- and Th2-associated chemokine levels are associated with allergy development during the first 6 y of life, allowing assessment of respiratory allergic symptoms usually developing in this period. The CB levels of cytokines, chemokines, and total IgE were determined in 56 children of 20 women with allergic symptoms and 36 women without allergic symptoms. Total IgE and allergen-specific IgE antibody levels were quantified at 6, 12, 24 mo, and 6 y of age. Increased CB CCL22 levels were associated with development of allergic sensitization and asthma and increased CCL17 levels with development of allergic symptoms, including asthma. Sensitized children with allergic symptoms showed higher CB CCL17 and CCL22 levels and higher ratios between these Th2-associated chemokines and the Th1-associated chemokine CXCL10 than nonsensitized children without allergic symptoms. A pronounced Th2 deviation at birth, reflected by increased CB CCL17 and CCL22 levels, and increased CCL22/CXCL10 and CCL17/CXCL10 ratios might promote allergy development later in life.
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| 3. |
- Abrahamsson, Thomas, et al.
(författare)
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Gut microbiota and allergy: the importance of the pregnancy period
- 2015
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Ingår i: Pediatric Research. - : Nature Publishing Group: Open Access Hybrid Model Option A. - 0031-3998 .- 1530-0447. ; 77:1, s. 214-219
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Forskningsöversikt (refereegranskat)abstract
- Limited microbial exposure is suggested to underlie the increase of allergic diseases in affluent countries, and bacterial diversity seems to be more important than specific bacteria taxa. Prospective studies indicate that the gut microbiota composition during the first months of life influences allergy development, and support the theory that factors influencing the early maturation of the immune system might be important for subsequent allergic disease. However, recent research indicates that microbial exposure during pregnancy may be even more important for the preventative effects against allergic disease. This review gives a background of the epidemiology, immunology, and microbiology literature in this field. It focuses on possible underlying mechanisms such as immune-regulated epigenetic imprinting and bacterial translocation during pregnancy, potentially providing the offspring with a pioneer microbiome. We suggest that a possible reason for the initial exposure of bacterial molecular patterns to the fetus in utero is to prime the immune system and/or the epithelium to respond appropriately to pathogens and commensals after birth.
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| 4. |
- Aburawi, Elhadi H., et al.
(författare)
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Effects of N-3 Polyunsaturated Fatty Acids on Left Ventricular Function and Coronary Flow in Children with Type 1 Diabetes Mellitus
- 2011
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Ingår i: Pediatric Research. - : Springer Science and Business Media LLC. - 1530-0447 .- 0031-3998. ; 70:227
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Konferensbidrag (refereegranskat)abstract
- Purposes: Dietary supplementation with N-3 Polyunsaturated Fatty Acids (n-3 PUFAs) could have beneficial effects on cardiovascular system in patients with type 1 diabetes mellitus (DM1). Methods: In a double-blind placebo controlled crossover study, 33 children with DM1 duration of more than one year were randomly and equally assigned to either n-3 PUFAs (2 gm/day, Nycoplus® Omega-3, 1000 mg) or placebo treatment for 8 weeks. Following a 4-week period recovery, the groups were crossovered with above treatments for another 8 weeks. Transthoracic Doppler echocardiography (TTDE) study was done on pre and post treatment visits, and after one month's treatment free recovery for left ventricular function and flow in the left anterior descending coronary artery (LAD). Results: Of recruited children 28 (85%) completed the study. n-3 PUFAs treatment was associated with increase in mean cardiac index (CI; from 2.7±0.4 to 3.7±0.8 l/min/m2, p< 0.0001) and left ventricular fractional shortening (FS; from 31±2.5 to 39±3%, p< 0.0001). The treatment decreased both LAD peak flow velocity (PFVd) from 96±17 to 68±12 cm/s, p< 0.0001 and LAD CF from 105±31 to 66±15 ml/min, p< 0.0001). One month after stopping the treatment CI decreased from 3.7±0.8 to 2.6±0.5 l/min/m2, p< 0.0001 and mean FS from 39±3 to 32±2, p< 0.0001. Mean PFVd increased from 68±12 to 90±12 cm/s, p< 0.0001 and CF from 66±15 to 108±30 ml/min, p< 0.0001. Conclusions: In patients with DM1 n-3 PUFA therapy increased cardiac index and LV systolic function. The basal coronary flow decrease improving the circumstances for better coronary flow reserve.
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| 5. |
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| 6. |
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| 7. |
- Adlerberth, Ingegerd, 1959, et al.
(författare)
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Reduced enterobacterial and increased staphylococcal colonization of the infantile bowel: an effect of hygienic lifestyle?
- 2006
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Ingår i: Pediatric research. - : Springer Science and Business Media LLC. - 0031-3998 .- 1530-0447. ; 59:1, s. 96-101
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Tidskriftsartikel (refereegranskat)abstract
- The modern Western lifestyle may have altered the composition of the commensal microflora. Here, we investigated the first year's intestinal colonization pattern in 99 vaginally delivered Swedish infants and 17 delivered by cesarean section. Rectal swabs obtained at 3 d of age were cultured for aerobic bacteria and fecal samples obtained at 1, 2, 4, and 8 wk and at 6 and 12 mo of age were cultivated quantitatively for aerobic and anaerobic bacteria. Vaginally delivered infants more often had Escherichia coli compared with cesarean section-delivered infants, whereas the latter more frequently carried other enterobacteria, such as Klebsiella and Enterobacter. Independent of delivery mode, it took 2 mo until most infants were colonized by enterobacteria, traditionally the first colonizers. In contrast, coagulase-negative staphylococci colonized 99% of the infants from d 3 onwards. The poor adaptation of staphylococci to the gut was shown by declining population sizes after some weeks. Dominating anaerobes were initially bifidobacteria and clostridia, whereas Bacteroides initially colonized only 30% of vaginally delivered infants and increased very slowly in prevalence. Bacteroides colonization was delayed up to 1 y in cesarean section-delivered compared with vaginally delivered infants. Our results show that some "traditional" fecal bacteria are acquired late today especially in cesarean section-delivered infants, probably due to limited environmental circulation. In their absence, skin bacteria like staphylococci have become the first gut colonizers.
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| 8. |
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| 9. |
- Agren, J, et al.
(författare)
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Aquaporin-1 and -3 in perinatal skin
- 1999
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Ingår i: PEDIATRIC RESEARCH. - : Springer Science and Business Media LLC. - 0031-3998 .- 1530-0447. ; 45:4, s. 47A-47A
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 10. |
- Agut, T, et al.
(författare)
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Preterm white matter injury: ultrasound diagnosis and classification
- 2020
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Ingår i: Pediatric research. - : Springer Science and Business Media LLC. - 1530-0447 .- 0031-3998. ; 87:SUPPL 1Suppl 1, s. 37-49
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Tidskriftsartikel (refereegranskat)abstract
- White matter injury (WMI) is the most frequent form of preterm brain injury. Cranial ultrasound (CUS) remains the preferred modality for initial and sequential neuroimaging in preterm infants, and is reliable for the diagnosis of cystic periventricular leukomalacia. Although magnetic resonance imaging is superior to CUS in detecting the diffuse and more subtle forms of WMI that prevail in very premature infants surviving nowadays, recent improvement in the quality of neonatal CUS imaging has broadened the spectrum of preterm white matter abnormalities that can be detected with this technique. We propose a structured CUS assessment of WMI of prematurity that seeks to account for both cystic and non-cystic changes, as well as signs of white matter loss and impaired brain growth and maturation, at or near term equivalent age. This novel assessment system aims to improve disease description in both routine clinical practice and clinical research. Whether this systematic assessment will improve prediction of outcome in preterm infants with WMI still needs to be evaluated in prospective studies.
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| 11. |
- Ahola, T., et al.
(författare)
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Plasma 8-isoprostane is increased in preterm infants who develop bronchopulmonary dysplasia or periventricular leukomalacia
- 2004
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Ingår i: Pediatr Res. - 0031-3998. ; 56:1, s. 88-93
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Tidskriftsartikel (refereegranskat)abstract
- Our aim was to assess the plasma free 8-epi-prostaglandin F(2alpha) (8-isoprostane) and ascorbyl radical as risk indicators for oxidative damage in extremely low birth weight infants (ELBWIs) and the effect of N-acetylcysteine (NAC) on these markers. Plasma samples were collected on days 3 and 7 of life from infants who were enrolled in a randomized, controlled trial in which i.v. NAC or placebo was administered to ELBWIs during the first week of life, with the aim of preventing bronchopulmonary dysplasia (BPD). Plasma 8-isoprostane was analyzed in 83 infants using an enzyme immunoassay kit. Ascorbyl radical concentration was measured in 61 infants with electron spin resonance spectroscopy. The 8-isoprostane concentrations were similar in the NAC and placebo groups. In infants who later developed BPD or died (n = 29), the median (range) 8-isoprostane concentration was significantly higher (p = 0.001) on day 3 and day 7 [50.0 pg/mL (19-360) and 57.0 pg/mL (14-460), respectively] than in survivors without BPD [n = 54; 34.5 pg/mL (5-240) and 39.5 pg/mL (7-400), respectively]. The 8-isoprostane levels increased significantly more (p < 0.05) in infants who later developed periventricular leukomalacia. NAC treatment or the later development of BPD was not related to the ascorbyl radical levels. The ascorbyl radical level decreased significantly in all groups from day 3 to day 7, but the difference between the groups was not significant. The mean (SD) ascorbyl radical level on day 3 was significantly higher (p < 0.01) in infants who later developed periventricular leukomalacia [287 (124) versus 194 (90)]. These data suggest that plasma 8-isoprostane could serve as a marker in assessing the risk for BPD development in ELBWIs.
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| 12. |
- Albertsson-Wikland, Kerstin, 1947, et al.
(författare)
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Long-Term Response to GH Therapy in Short Children With a Delayed Infancy-Childhood Transition (DICT)
- 2011
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Ingår i: Pediatric Research. - 0031-3998 .- 1530-0447. ; 69:6, s. 504-510
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Tidskriftsartikel (refereegranskat)abstract
- Transition of growth from infancy to childhood is associated with activation of the GH-IGF-I axis. Children with a delayed infancy-childhood transition (DICT) are short as adults. Thus, age at ICT may impact on growth response to GH. The objective was to investigate associations between growth response to GH treatment and ICT timing in children with idiopathic short stature (ISS) in a randomized, controlled, multicenter trial, TRN 88-080. A total of 147 prepubertal children (mean age, 11.5 +/- 1.4 y) were randomized to receive GH 33 mu g/kg/d (GH(33), n = 43), GH 67 mu g/kg/d (GH(67), n = 61), or no treatment (n = 43). Data on growth to final height (FH) were analyzed after categorization into those with normal (n = 76) or delayed ICT (n = 71). Within the GH(33) group, significant height gain at FH was only observed in children with a DICT (p < 0.001), with each month of delay corresponding to gain of 0.13 SD score (SDS). For the GH(67) group, the timing of the onset of the ICT had no impact on growth response. In conclusion, ISS children with a DICT responded to standard GH dose (better responsiveness), whereas those with a normal ICT required higher doses to attain a significant height gain to FH.
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| 13. |
- Albertsson-Wikland, Kerstin, et al.
(författare)
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Long-term response to growth hormone (GH) therapy in short children with a delayed infancy childhood transition (DICT)
- 2011
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Ingår i: Pediatric Research. - 0031-3998 .- 1530-0447. ; 69, s. 504-510
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Tidskriftsartikel (refereegranskat)abstract
- Transition of growth from infancy to childhood is associated with activation of the GH-IGF-I axis. Children with a delayed infancy-childhood-transition (ICT) are short as adults. Thus, age at ICT may impact on growth response to GH. The objective was to investigate associations between growth response to GH-treatment and ICT-timing in children with idiopathic short stature (ISS) in a randomized, controlled, multicenter trial, TRN 88-080. 147 pre-pubertal children (mean age, 11.5±1.4 yrs) were randomized to receive GH 33μg/kg/d (GH33, n=43), GH 67μg/kg/d (GH67, n=61) or no treatment (n=43). Data on growth to final height (FH) were analyzed after categorization into those with normal (n=76) or delayed ICT (n=71). Within the GH33 group, significant height gain at FH was only observed in children with a delayed ICT (p<0.001) with each month of delay corresponding to gain of 0.13 standard deviation score (SDS). For the GH67 group, the timing of the onset of the ICT had no impact on growth response. In conclusion, ISS children with a delayed ICT responded to standard-GH-dose (better responsiveness), whereas those with a normal ICT required higher doses to attain a significant height gain to FH.
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| 14. |
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| 15. |
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| 16. |
- Andersson, Yvonne, et al.
(författare)
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Three variants of parathyroid hormone-related protein messenger RNA are expressed in human mammary gland.
- 1997
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Ingår i: Pediatric Research. - 0031-3998 .- 1530-0447. ; 41:3, s. 380-3
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Tidskriftsartikel (refereegranskat)abstract
- PTH-related protein (PTHrP) is found in a variety of tissues; particularly high levels are present in human milk. The structure of the human PTHrP gene is complex, and alternative splicing allows expression of three different variants PTHrP139, PTHrP173, and PTHrP141, respectively. To determine which of the variants are expressed in human mammary gland a reverse transcriptase polymerase chain reaction (RT-PCR) method was elaborated, distinguishing the three variants. mRNA isolated from human milk cells, human mammary epithelial cells (HMEC) and human nonlactating mammary gland cells were analyzed. The RT-PCR experiments resulted in amplification of DNA fragments corresponding to all three variants for all three cell sources tested. The nucleotide sequences of the PCR fragments were determined and verified to be identical to the reported sequences. Hence, it is concluded that human mammary gland epithelial cells express three variants of PTHrP. Whether these have different physiologic effects in the mammary gland or in the breast fed infant remain to be explored.
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| 17. |
- Appelkvist, E L, et al.
(författare)
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Synthesis of mevalonate pathway lipids in fibroblasts from Zellweger and X-linked ALD patients.
- 1999
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Ingår i: Pediatric Research. - : Springer Science and Business Media LLC. - 0031-3998 .- 1530-0447. ; 46:3, s. 345-50
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Tidskriftsartikel (refereegranskat)abstract
- Fibroblasts were cultured to determine the involvement of peroxisomes in cholesterol and dolichol synthesis. For this purpose, the behavior of cells from patients with Zellweger syndrome, with X-linked adrenoleukodystrophy, and from nondiseased control subjects was studied. Cells both after pretreatment with mevinolin and without pretreatment were incubated in a medium containing [3H]-mevalonate. In fibroblasts from patients with peroxisomal defects, the cholesterol content and mevalonate incorporation into cholesterol were decreased by 10-20% in comparison with control cells. Mevinolin pretreatment decreased the incorporation rate of [3H]-mevalonate into cholesterol but increased the labeling of ubiquinone and dolichol both in diseased and control cells. Squalene synthase activity was unchanged, whereas the activity of farnesyl-pyrophosphate synthase was increased in the diseased states. The results show that in patients with peroxisomal deficiency neither the amount nor the rate of synthesis of cholesterol and dolichol is reduced to any greater extent.
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| 18. |
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| 19. |
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| 20. |
- Aubert, Adrien, et al.
(författare)
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Risk factors for cerebral palsy and movement difficulties in 5-year-old children born extremely preterm
- 2023
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Ingår i: Pediatric Research. - : SPRINGERNATURE. - 0031-3998 .- 1530-0447. ; 94:2, s. 771-780
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundMotor impairment is common after extremely preterm (EPT, <28 weeks gestational age (GA)) birth, with cerebral palsy (CP) affecting about 10% of children and non-CP movement difficulties (MD) up to 50%. This study investigated the sociodemographic, perinatal and neonatal risk factors for CP and non-CP MD.MethodsData come from a European population-based cohort of children born EPT in 2011-2012 in 11 countries. We used multinomial logistic regression to assess risk factors for CP and non-CP MD (Movement Assessment Battery for Children - 2nd edition <= 5th percentile) compared to no MD (>15th percentile) among 5-year-old children.ResultsCompared to children without MD (n = 366), young maternal age, male sex and bronchopulmonary dysplasia were similarly associated with CP (n = 100) and non-CP MD (n = 224) with relative risk ratios (RRR) ranging from 2.3 to 3.6. CP was strongly related to severe brain lesions (RRR >10), other neonatal morbidities, congenital anomalies and low Apgar score (RRR: 2.4-3.3), while non-CP MD was associated with primiparity, maternal education, small for GA (RRR: 1.6-2.6) and severe brain lesions, but at a much lower order of magnitude.ConclusionCP and non-CP MD have different risk factor profiles, with fewer clinical but more sociodemographic risk factors for non-CP MD.ImpactYoung maternal age, male sex and bronchopulmonary dysplasia similarly increased risks of both cerebral palsy and non-cerebral palsy movement difficulties.Cerebral palsy was strongly related to clinical risk factors including severe brain lesions and other neonatal morbidities, while non-cerebral palsy movement difficulties were more associated with sociodemographic risk factors.These results on the similarities and differences in risk profiles of children with cerebral palsy and non-cerebral palsy movement difficulties raise questions for etiological research and provide a basis for improving the identification of children who may benefit from follow-up and early intervention.
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| 21. |
- Baraldi, Erika, 1982-, et al.
(författare)
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Clinical Protocol & Research Process of Stockholm Preterm Interaction-Based Intervention, SPIBI
- 2019
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Ingår i: Pediatric Research. - : Springer Science and Business Media LLC. - 0031-3998 .- 1530-0447. ; 86:Suppl., s. 54-55
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundExtremely preterm (EPT) born children are at increased risk of cognitive and neurodevelopmental impairment, neuropsychiatric disorders and academic difficulties. Parents of EPT born children are extra vulnerable for anxiety, posttraumatic stress disorder and depression and the parent-child interaction is negatively affected by prematurity. There is some evidence that early interventions have beneficial effects on neurocognitive and motor outcomes (Spittle A et al 2015). Based on a previous intervention (Verkerk G et al 2012) and adjusted to the Swedish context with 480 days paid parental leave, we created a post–discharge intervention, SPIBI, for families of EPT born children.MethodThe aim of (SPIBI) is to improve the quality of the parent-child interaction, child development and parental mental health in families with EPT born children. . SPIBI is a randomized controlled beginning at discharge and lasting until the child is 12 months corrected age. The trial design is a two arm randomized trial with four recruiting sites in Stockholm. Intervention group (target, n=65) receives 10 visits and two telephone calls from a trained interventionist and the control group (target n=65) receives treatment as usual plus an extended follow-up program. The SPIBI-team has recruited and trained 6 multi-professional and NICU-experienced interventionists. The training takes one year (0.2 of full time) and the content was both theoretical and practical, including pilot-cases. ResultSPIBI is an ongoing research project, beginning the 1st of September 2018 and planning to end recruitment the 31st of August 2020 and finishing the home-visits in August 2021. By the end of April 2019, 33 eligible infants had been identified within the four neonatal units in Stockholm; of which 26 children approved and 7 children declined participation. At this stage, three children have dropped out of the study, because of severe social challenges and child death. Identified challenges have been social and medical vulnerability of the EPT-families, finding the optimal multi-professional balance of motoric, psychological, pedagogical and medical kernels of the intervention, ethical considerations when to ask families for participation, lack of long-term discharge-planning of the neonatal units and large geographical spread of NICUs as well as families.ConclusionIn conclusion, the protocol seem to be feasible and appreciated by parents in the target group. With regard to the small recruitment base, trials of this kind needs a long inclusion time. Since EPT-children and their parents displays a wide scope of difficulties and challenges, multi-professional cooperation is preferable, placing high demands of sensitivity, professional respect and time for long collaborative processes.
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| 26. |
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| 27. |
- Berglund, Staffan, 1975-, et al.
(författare)
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Effects of iron supplementation on auditory brainstem response in marginally LBW infants
- 2011
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Ingår i: Pediatric Research. - Baltimore : International Pediatrics Research Foundation, Inc. - 0031-3998 .- 1530-0447. ; 70:6, s. 601-606
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Tidskriftsartikel (refereegranskat)abstract
- LBW infants are at risk of iron deficiency (ID), which is associated with impaired nervous system development and may lead to prolonged auditory brainstem response (ABR) latencies. We hypothesized that iron supplementation shortens ABR latencies in marginally LBW (MLBW, 2000-2500 g) infants. In a randomized, controlled trial, 285 healthy MLBW infants received 0, 1, or 2 mg iron/kg/d of iron supplements from 6 wk to 6 mo of age. ABR absolute wave V latencies and central conduction time (CCT) were measured at the endpoint. There were no significant differences between groups in ABR wave V latencies (n = 218). Furthermore, there were no significantly prolonged ABR latencies in infants with ID (n = 32). CCT was significantly higher in the 2 mg group than in the placebo group (n = 126). However, there were no significant correlations between CCT and iron intake or any iron status variable, suggesting that differences in CCT were not caused by iron. We conclude that iron supplements did not improve ABR latencies, and iron-deficient MLBW infants did not have impaired ABR latencies at 6 mo, suggesting that ABR is not a sensitive measure of impaired neurological development or that mild/moderate ID causes no such impairment in MLBW infants.
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| 28. |
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| 29. |
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| 30. |
- Berglund, Staffan K., et al.
(författare)
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Effects of iron supplementation of low-birth-weight infants on cognition and behavior at 7 years : a randomized controlled trial
- 2018
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Ingår i: Pediatric Research. - New York : Nature Publishing Group. - 0031-3998 .- 1530-0447. ; 83, s. 111-118
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Tidskriftsartikel (refereegranskat)abstract
- Background Low-birth-weight infants (LBW) are at an increased risk of iron deficiency that has been associated with impaired neurodevelopment. We hypothesized that iron supplementation of LBW infants improves cognitive scores and reduces behavioral problems until school age.Methods We randomized 285 marginally LBW (2,000-2,500 g) infants to receive 0, 1, or 2 mg/kg/day of iron supplements from 6 weeks to 6 months of age. At 7 years of age, 205 participants were assessed regarding cognition using Wechsler Intelligence Scale for Children (WISC-IV) and behavior using the parental questionnaires Child Behavior Checklist (CBCL) and Five to Fifteen (FTF).Results There were no significant differences between the intervention groups in WISC-IV or FTF. However, the CBCL scores for externalizing problems were significantly different, in favor of supplemented children (P=0.045). When combining the supplemented groups, they had significantly lower scores for externalizing behavior compared with placebo (median (interquartile range): 44 [34;51] vs. 48.5 [41;56] P=0.013), and their risk ratio (95% confidence interval) for a total behavioral score above the cutoff for clinical problems was 0.31 (0.09-1.0), P=0.054.Conclusion Lower scores of externalizing behavior in supplemented children support our previous findings at 3 years, and suggest that iron supplementation may have long-lasting effects on behavioral functions.
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| 31. |
- Berglund, Staffan K, et al.
(författare)
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Effects of iron supplements and perinatal factors on fetal hemoglobin disappearance in LBW infants
- 2014
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Ingår i: Pediatric Research. - : Nature Publishing Group. - 0031-3998 .- 1530-0447. ; 76:5, s. 477-482
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND:The homeostatic mechanisms of iron metabolism and erythropoiesis in infants are unclear. Infants synthesize both fetal hemoglobin (HbF) and adult hemoglobin (HbA), and it is not known how the hemoglobin switch is regulated. We hypothesized that iron supplements to infants affect the disappearance of HbF. METHODS: We randomized 285 low-birth-weight infants (2,000-2,500g) into three intervention groups receiving 0, 1, or 2 mg/kg/d of iron supplements from 6 wk to 6 mo of age. In the present secondary analysis, we analyzed iron status, total hemoglobin (Hb), and HbF fraction at 6 wk, 12 wk, and at 6 mo and calculated absolute levels of HbF. RESULTS: We observed dose-dependent increased levels of Hb in iron-supplemented groups at 6 mo of age. However, for absolute HbF concentration, there was no similar effect of intervention. Mean (SD) HbF was 81.2 (16.8), 37.0 (13.8), and 8.1 (5.6) g/l at 6 wk, 12 wk, and 6 mo, respectively, similar in all groups. In linear regression analyses, postconceptional age turned out as the major predictor of HbF, independent of gestational age at birth. CONCLUSION: Our hypothesis was rejected. Instead, we confirmed a close correlation to postconceptional age, supporting a genetically programmed switch, insensitive to most environmental factors including birth.
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| 32. |
- Berglund, Staffan K., et al.
(författare)
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Hepcidin is a relevant iron status indicator in infancy : results from a randomized trial of early vs. delayed cord clamping
- 2021
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Ingår i: Pediatric Research. - : Nature Publishing Group. - 0031-3998 .- 1530-0447. ; 89:5, s. 1216-1221
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Tidskriftsartikel (refereegranskat)abstract
- Background: We aimed to evaluate whether serum hepcidin is a useful indicator of iron status in infants.Methods: Term infants (n = 400) were randomized to delayed (≥180 s) or early (≤10 s) cord clamping (CC). Iron status was assessed at 4 and 12 months. In all cases with iron depletion or iron deficiency (ID) (as defined in “Methods”) (n = 30) and 97 randomly selected iron-replete infants, we analyzed hepcidin and explored its correlation to the intervention, iron status, and perinatal factors.Results: Serum hepcidin concentrations were significantly lower in the early CC group at both time points and in ID infants at 4 months. Median (2.5th–97.5th percentile) hepcidin in non-ID infants in the delayed CC group (suggested reference) was 64.5 (10.9–142.1), 39.5 (3.5–157.7), and 32.9 (11.2–124.2) ng/mL in the cord blood and at 4 and 12 months, respectively. The value of 16 ng/mL was a threshold detecting all cases of iron depletion/ID at 4 months. No similar threshold for ID was observed at 12 months. The strongest predictor of hepcidin at both ages was ferritin.Conclusions: Hepcidin is relevant as iron status indicator in early infancy and may be useful to detect ID. Levels <16 ng/mL at 4 months of age indicates ID.ImpactSerum hepcidin is a relevant indicator of iron status in early infancy.Normal reference in healthy infants is suggested in this study.Serum hepcidin may be useful in clinical practice to detect iron deficiency.
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| 33. |
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| 34. |
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| 35. |
- Bergsson, G, et al.
(författare)
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Antimicrobial components of vernix caseosa
- 2004
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Ingår i: PEDIATRIC RESEARCH. - : Springer Science and Business Media LLC. - 0031-3998 .- 1530-0447. ; 56:3, s. 469-469
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 36. |
- Binia, Aristea, et al.
(författare)
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Human milk oligosaccharides, infant growth, and adiposity over the first 4 months of lactation
- 2021
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Ingår i: Pediatric Research. - : Springer Nature. - 0031-3998 .- 1530-0447. ; 90:3, s. 684-693
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Tidskriftsartikel (refereegranskat)abstract
- Background: The relationship between human milk oligosaccharides (HMOs) and infant growth and adiposity is not fully understood and comprehensive studies are missing from the current literature. Methods: We screened and recruited 370 healthy, pregnant women and their infants from seven European countries. Breastmilk samples were collected using standardized procedures at six time points over 4 months, as were infant parameters. Correlations and associations between HMO area under the curve, anthropometric data, and fat mass at 4 months were tested. Results: Lacto-N-neotetraose had a negative correlation with the change in length (rs = -0.18, P = 0.02). Sialyllacto-N-tetraose c (LSTc) had a positive correlation with weight for length (rs = 0.19, P = 0.015). Infants at the 25th upper percentile were fed milk higher in 3'-sialyllactose and LSTc (P = 0.017 and P = 0.006, respectively) compared to the lower 25th percentile of the weight-for-length z-score gain over 4 months of lactation. No significant associations between growth and body composition and Lewis or secretor-dependent HMOs like 2'-fucosyllactose were identified. Conclusions: Changes in the HMO composition of breastmilk during the first 4 months appear to have little influence on infant growth and body composition in this cohort of healthy mothers and infants.
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| 37. |
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| 38. |
- Björkqvist, Maria, et al.
(författare)
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Defective neutrophil oxidative burst in preterm newborns on exposure to coagulase-negative staphylococci
- 2004
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Ingår i: Pediatric Research. - : Springer Science and Business Media LLC. - 0031-3998 .- 1530-0447. ; 55:6, s. 966-971
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Tidskriftsartikel (refereegranskat)abstract
- The neutrophil oxidative burst is a product of the regulated assembly of the multicomponent oxidase enzyme. Our aim was to compare the oxidative burst in term (n = 10) and preterm newborns <31 wk gestational age (n = 10) after stimulation with coagulase-negative staphylococci in vitro. Strains of Streptococcus epidermidis with different invasive and slime-producing properties, one strain of S. haemolyticus, and one strain of group B-streptococcus were investigated. A whole-blood flow cytometric assay using the oxidation of hydroethidine to ethidium bromide was used. The oxidative activity in unstimulated neutrophil granulocytes [polymorphonuclear leukocytes (PMNLs)] was similar in term and preterm newborns, but the preterm newborns showed a significantly lower capacity to up-regulate the oxidative burst intensity after bacterial stimulation (p = 0.004). In the term but not in the preterm group, the oxidative burst intensity after bacterial stimulation correlated with the baseline oxidative burst intensity. After bacterial stimulation, there was a trend toward a greater percentage of activated neutrophils in the term group than in the preterm group, but the difference was less pronounced than that in oxidative burst intensity. Significant differences in oxidative burst response to different bacterial strains were observed (p < 0.001), but the differences could not be correlated exclusively to invasive capacity or slime-producing properties. It is concluded that the baseline oxidative activity is similar in term and preterm PMNLs but that preterm PMNLs have a decreased capacity to increase the oxidative burst in response to bacterial stimulation.
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| 39. |
- Björkstén, B, et al.
(författare)
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The effect of human colostrum on neutrophil function.
- 1979
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Ingår i: Pediatric Research. - 0031-3998 .- 1530-0447. ; 13:6, s. 737-41
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Tidskriftsartikel (refereegranskat)abstract
- Strains of Escherichia coli were opsonized in human colostrum via heat stable opsonins and the classic complement pathway, but colostrum lacked capacity to opsonize E. coli via the alternative pathway. There was no bacteriostatic activity against serum sensitive E. coli strains, although specific antibodies against the strains were present. Neutrophils suspended in colostrum had normal chemotaxis and this was not altered by treating the colostrum with HCl.
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| 40. |
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| 47. |
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| 48. |
- Bragde, Hanna, 1979-, et al.
(författare)
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Gene Expression Profiling of Duodenal Biopsies Discriminates Celiac Disease Mucosa From Normal Mucosa
- 2011
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Ingår i: Pediatric Research. - : Nature Publishing Group. - 0031-3998 .- 1530-0447. ; 69:6, s. 530-537
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Tidskriftsartikel (refereegranskat)abstract
- Celiac disease (CD) is identified by histopathologic changes in the small intestine which normalize during a gluten-free diet. The histopathologic assessment of duodenal biopsies is usually routine but can be difficult. This study investigated gene expression profiling as a diagnostic tool. A total of 109 genes were selected to reflect alterations in crypt-villi architecture, inflammatory response, and intestinal permeability and were examined for differential expression in normal mucosa compared with CD mucosa in pediatric patients. Biopsies were classified using discriminant analysis of gene expression. Fifty genes were differentially expressed, of which eight (APOC3, CYP3A4, OCLN, MAD2L1, MKI67, CXCL11, IL17A, and CTLA4) discriminated normal mucosa from CD mucosa without classification errors using leave-one-out cross-validation (n = 39) and identified the degree of mucosal damage. Validation using an independent set of biopsies (n = 27) resulted in four discrepant cases. Biopsies from two of these cases showed a patchy distribution of lesions, indicating that discriminant analysis based on single biopsies failed to identify CD mucosa. In the other two cases, serology support class according to discriminant analysis and histologic specimens were judged suboptimal but assessable. Gene expression profiling shows promise as a diagnostic tool and for follow-up of CD, but further evaluation is needed.
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