scholarly journals Neonatal iron distribution and infection susceptibility in full term, preterm and low birthweight babies in urban Gambia: study protocol for an observational study.

2019 ◽  
Vol 3 ◽  
pp. 1469 ◽  
Author(s):  
James H. Cross ◽  
Ousman Jarjou ◽  
Nuredin Ibrahim Mohammed ◽  
Andrew M. Prentice ◽  
Carla Cerami
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Observational Study ◽  
Bacterial Growth ◽  
Serum Iron ◽  
Neonatal Infection ◽  
Full Term ◽  
Normal Birth Weight ◽  
Normal Birth ◽  
Nutritional Immunity

Background: Neonatal infection is the third largest cause of death in children under five worldwide.  Nutritional immunity is the process by which the host innate immune system limits nutrient availability to invading organisms. Iron is an essential micronutrient for both microbial pathogens and their mammalian hosts. Changes in iron availability and distribution have significant effects on pathogen virulence and on the immune response to infection. Our previously published data shows that, during the first 24 hours of life, full-term neonates have reduced overall serum iron. Transferrin saturation decreases rapidly from 45% in cord blood to ~20% by six hours post-delivery. Methods: To study neonatal nutritional immunity and its role in neonatal susceptibility to infection, we will conduct an observational study on 300 full-term normal birth weight (FTB+NBW), 50 preterm normal birth weight (PTB+NBW), 50 preterm low birth weight (PTB+LBW) and 50 full-term low birth weight (FTB+LBW), vaginally-delivered neonates born at Kanifing General Hospital, The Gambia. We will characterize and quantify iron-related nutritional immunity during the early neonatal period and use ex vivo sentinel bacterial growth assays to assess how differences in serum iron affect bacterial growth. Blood samples will be collected from the umbilical cord (arterial and venous) and at serial time points from the neonates over the first week of life. Discussion: Currently, little is known about nutritional immunity in neonates. In this study, we will increase understanding of how nutritional immunity may protect neonates from infection during the first critical days of life by limiting the pathogenicity and virulence of neonatal sepsis causing organisms by reducing the availability of iron. Additionally, we will investigate the hypothesis that this protective mechanism may not be activated in preterm and low birth weight neonates, potentially putting these babies at an enhanced risk of neonatal infection. Trial registration: clinicaltrials.gov (NCT03353051) 27/11/2017

scholarly journals Neonatal iron distribution and infection susceptibility in full term, preterm and low birthweight babies in urban Gambia: study protocol for an observational study.

2019 ◽  
Vol 3 ◽  
pp. 1469
Author(s):  
James H. Cross ◽  
Ousman Jarjou ◽  
Nuredin Ibrahim Mohammed ◽  
Andrew M. Prentice ◽  
Carla Cerami
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Observational Study ◽  
Bacterial Growth ◽  
Serum Iron ◽  
Neonatal Infection ◽  
Full Term ◽  
Normal Birth Weight ◽  
Normal Birth ◽  
Nutritional Immunity

Background: Neonatal infection is the third largest cause of death in children under five worldwide.  Nutritional immunity is the process by which the host innate immune system limits nutrient availability to invading organisms. Iron is an essential micronutrient for both microbial pathogens and their mammalian hosts. Changes in iron availability and distribution have significant effects on pathogen virulence and on the immune response to infection. Our previously published data shows that, during the first 24 hours of life, full-term neonates have reduced overall serum iron. Transferrin saturation decreases rapidly from 45% in cord blood to ~20% by six hours post-delivery. Methods: To study neonatal nutritional immunity and its role in neonatal susceptibility to infection, we will conduct an observational study on 300 full-term normal birth weight (FTB+NBW), 50 preterm normal birth weight (PTB+NBW), 50 preterm low birth weight (PTB+LBW) and 50 full-term low birth weight (FTB+LBW), vaginally-delivered neonates born at Kanifing General Hospital, The Gambia. We will characterize and quantify iron-related nutritional immunity during the early neonatal period and use ex vivo sentinel bacterial growth assays to assess how differences in serum iron affect bacterial growth. Blood samples will be collected from the umbilical cord (arterial and venous) and at serial time points from the neonates over the first week of life. Discussion: Currently, little is known about nutritional immunity in neonates. In this study, we will increase understanding of how nutritional immunity may protect neonates from infection during the first critical days of life by limiting the pathogenicity and virulence of neonatal sepsis causing organisms by reducing the availability of iron. Additionally, we will investigate the hypothesis that this protective mechanism may not be activated in preterm and low birth weight neonates, potentially putting these babies at an enhanced risk of neonatal infection. Trial registration: clinicaltrials.gov (NCT03353051) 27/11/2017

scholarly journals Growth, lung function, and physical activity in schoolchildren who were very-low-birth-weight preterm infants

2016 ◽  
Vol 42 (4) ◽  
pp. 254-260 ◽  
Author(s):  
Aline Dill Winck ◽  
João Paulo Heinzmann-Filho ◽  
Deise Schumann ◽  
Helen Zatti ◽  
Rita Mattiello ◽  
...  
Keyword(s):  
Physical Activity ◽  
Birth Weight ◽  
Lung Function ◽  
Low Birth Weight ◽  
Preterm Infants ◽  
Very Low Birth Weight ◽  
Full Term ◽  
Normal Birth Weight ◽  
Term Infants ◽  
Normal Birth

ABSTRACT Objective: To compare somatic growth, lung function, and level of physical activity in schoolchildren who had been very-low-birth-weight preterm infants (VLBWPIs) or normal-birth-weight full-term infants. Methods: We recruited two groups of schoolchildren between 8 and 11 years of age residing in the study catchment area: those who had been VLBWPIs (birth weight < 1,500 g); and those who had been normal-birth-weight full-term infants (controls, birth weight ≥ 2,500 g). Anthropometric and spirometric data were collected from the schoolchildren, who also completed a questionnaire regarding their physical activity. In addition, data regarding the perinatal and neonatal period were collected from the medical records of the VLBWPIs. Results: Of the 93 schoolchildren screened, 48 and 45 were in the VLBWPI and control groups, respectively. No significant differences were found between the groups regarding anthropometric characteristics, nutritional status, or pulmonary function. No associations were found between perinatal/neonatal variables and lung function parameters in the VLBWPI group. Although the difference was not significant, the level of physical activity was slightly higher in the VLBWPI group than in the control group. Conclusions: Among the schoolchildren evaluated here, neither growth nor lung function appear to have been affected by prematurity birth weight, or level of physical activity.

scholarly journals Full-term low birth weight infants have differentially hypermethylated DNA related to immune system and organ growth: A comparison with full-term normal birth weight infant

2020 ◽  
Author(s):  
Ikuyo Hayashi ◽  
Ken Yamaguchi ◽  
Masahiro Sumitomo ◽  
Kenji Takakura ◽  
Narumi Nagai ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Immune System ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Excision Repair ◽  
Full Term ◽  
Public Health Issue ◽  
Normal Birth Weight ◽  
Normal Birth ◽  
Differentially Methylated Genes

Abstract Objective: Low birth weight (LBW) is a major public health issue as it increases the risk of noncommunicable diseases throughout life. However, the genome-wide DNA methylation patterns of full-term LBW infants (FT-LBWs) are still unclear. This exploratory study aimed to analyze the DNA methylation differences in FT-LBWs compared with those in full-term normal birth weight infants (FT-NBWs) whose mothers were nonsmokers and had no complications. Initially, 702 Japanese women with singleton pregnancies were recruited. Of these, four FT-LBWs and five FT-NBWs were selected as references for DNA methylation analysis, and 862,260 CpGs were assessed using Illumina Infinium MethylationEPIC BeadChip. Gene ontology enrichment analysis was performed using DAVID v6.8 software to identify the biological functions of hyper- and hypomethylated DNA in FT-LBWs. Results: 483 hyper-differentially methylated genes (DMGs) and 35 hypo-DMGs were identified in FT-LBW promoter regions. Hyper-DMGs were annotated to 11 biological processes; “macrophage differentiation” (e.g., CASP8), “apoptotic mitochondrial changes” (e.g., BH3), “nucleotide-excision repair” (e.g., HUS1), and “negative regulation of inflammatory response” (e.g., NLRP12 and SHARPIN). EREG was classified into “ovarian cumulus expansion” within the “organism growth and organization” category. Our data imply that LBW might be associated with epigenetic modifications, which regulate the immune system and cell maturation.

scholarly journals Full-term low birth weight infants have differentially hypermethylated DNA related to immune system and organ growth: A comparison with full-term normal birth weight infant

2020 ◽  
Author(s):  
Ikuyo Hayashi ◽  
Ken Yamaguchi ◽  
Masahiro Sumitomo ◽  
Kenji Takakura ◽  
Narumi Nagai ◽  
...  
Keyword(s):  
Dna Methylation ◽  
Immune System ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Full Term ◽  
Normal Birth Weight ◽  
Term Infants ◽  
Normal Birth ◽  
Genome Wide ◽  
Differentially Methylated Genes

Abstract Objective: Low birth weight (LBW) is a major public health issue as it results in a higher risk of non-communicable diseases throughout life. However, the genome-wide DNA methylation patterns of LBW full-term infants (FT-LBWs) are still unclear. The aim of this exploratory study was to compare differences in DNA methylation between FT-LBWs and normal birth weight full-term infants (FT-NBWs) whose mothers were non-smokers and non-complication. Results: A total of 702 Japanese singleton pregnancies were recruited. The prevalence of preterm LBW and FT-LBW was 3.4% and 6.1%, respectively. Four FT-LBWs and five FT-NBWs were selected, genome-wide DNA methylation analysis including 862,260 methylation CpGs was performed. 483 hyper-differentially methylated genes (DMGs) and 35 hypo-DMGs were identified in FT-LBW promoter regions. Hyper-DMGs were annotated to 11 biological processes; intriguingly, “macrophage differentiation” (e.g., CASP8 ), “apoptotic mitochondrial changes” (e.g., BH3 ) , “nucleotide-excision repair” (e.g., HUS1 ) , and “negative regulation of inflammatory response” (e.g., NLRP12 and SHARPIN ) were included within the “immune system” and “DNA metabolism and repair” categories. EREG was classified into “ovarian cumulus expansion” within the “organism growth and organization” category. Our data implies that LBW itself could be associated with epigenetic modulation regarding immune system and cell mature.

scholarly journals Uric acid and blood pressures in low birth weight 7-year-olds

2014 ◽  
Vol 54 (2) ◽  
pp. 114
Author(s):  
Paulus Linardi ◽  
Adrian Umboh ◽  
Suryadi NN Tatura
Keyword(s):  
Blood Pressure ◽  
Uric Acid ◽  
Birth Weight ◽  
Cardiovascular Diseases ◽  
Low Birth Weight ◽  
Observational Study ◽  
Acid Level ◽  
Normal Birth Weight ◽  
Normal Birth ◽  
Blood Pressures

Background Low birth weight (LBW) has been associated withincreased cardiovascular diseases, including hypertension, duringadulthood. Nephrogenesis impairment in LBW may lead to anincrease of uric acid and hypertension.Objective To assess for a correlation between uric acid and bloodpressures in LBW children.Methods This study was conducted from January to April 20 12.A comparative and correlative analytic-observational study with across-sectional method was done in children aged 7-8 years, bornat Prof. Dr. RD Kandou General Hospital and living in Manado.Forty-eight LBW children and 48 normal birth weight (NBW)children were included in this study. All children underwent uricacid level and blood pressures measurements.Results Mean uric acid level in LBW children was significantlyhigher than in NBW children (P = 0.001) . There was no correlationbetween uric acid and blood pressures in LBW children(r=0.13,P> 0.05 for systolic blood pressure; r=0.05, P> 0.05 for diastolicblood pressure).Conclusioru; LBW children have higher uric acid levels thanNBW children, but no correlation is found between uric acid leveland blood pressures.

Antioxidant Levels in Cord Blood of Term Low Birth Weight Neonates Requiring Delivery Room Resuscitation

2021 ◽  
pp. 097321792199140
Author(s):  
Rimjhim Sonowal ◽  
Anamika Jain ◽  
V. Bhargava ◽  
H.D. Khanna ◽  
Ashok Kumar
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Vitamin A ◽  
Cord Blood ◽  
Serum Levels ◽  
Study Groups ◽  
Delivery Room ◽  
Normal Birth Weight ◽  
Normal Birth ◽  
Major Congenital Malformations

Objective: The objective of this study was to evaluate the serum levels of various antioxidants, namely, vitamin A and E, superoxide dismutase (SOD), catalase, and glutathione peroxidase (GPx) in the cord blood of term low birth weight (LBW) neonates who required delivery room resuscitation (DRR). Materials and Methods: This case control study included 37 term LBW neonates who needed DRR as cases and 44 term neonates as controls (15 term LBW and 29 term normal birth weight) who did not require resuscitation at birth. Neonates suffering from major congenital malformations, infection, or hemolytic disease were excluded. Standard methods were used to measure the levels of vitamin A, vitamin E, SOD, catalase, and GPx levels in the cord blood. Results: Vitamin A and E levels were significantly low in cases compared to term LBW controls as well as term normal birth weight controls. Levels of SOD, GPx, and catalase were comparable in different study groups. Conclusion: Our study shows that term LBW neonates requiring DRR had significantly low levels of vitamin A and E in their cord blood. This might compromise their ability to tolerate oxidative stress during DRR.

MORTALITY FROM CONGENITAL CARDIOVASCULAR DISEASE IN OREGON

PEDIATRICS ◽  
1967 ◽  
Vol 40 (3) ◽  
pp. 334-344
Author(s):  
Victor D. Menashe ◽  
Harold T. Osterud ◽  
Herbert E. Griswold
Keyword(s):  
Cardiovascular Disease ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Life Span ◽  
Normal Birth Weight ◽  
Parental Age ◽  
Cardiac Malformation ◽  
Death Rates ◽  
Normal Birth ◽  
Weight One

Over one half of the deaths from all congenital malformations were due to congenital cardiovascular disease. There were 496 individuals who died of congenital cardiovascular disease in Oregon during 1957 thru 1961, and three fourths of the deaths occurred in infants under 1 year of age. More males were affected by congenital cardiovascular disease than females, but, when congenital cardiovascular disease was present, the length of survival, as measured by life span, did not differ by sex. One out of every four infants dying of congenital cardiovascular disease was of low birth weight; of these, 60% were over 37 weeks' gestation. However, there was no difference in the life span of low birth weight and normal birth weight infants who died with congenital cardiovascular disease. This would imply that the significant factor of death in these infants was the cardiac malformation rather than the low birth weight. One out of every three infants who died with congenital cardiovascular disease had malformations of other systems. Fewer deaths than expected were identified among first born. Fetal deaths were noted more frequently in the population of mothers of children with congenital heart disease than in the overall population. The parental age in this group was significantly higher than in the general population and death rates of infants with congenital cardiovascular disease increased with advancing parental age. Thirty-two percent of the infants who died with congenital cardiovascular disease had single lesions. Early diagnosis and treatment is to be stressed if mortality is to be reduced.

Sign in / Sign up

Export Citation Format

Share Document