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Rantakari K, Rinta-Koski OP, Metsäranta M, Hollmén J, Särkkä S, Rahkonen P, Lano A, Lauronen L, Nevalainen P, Leskinen MJ, Andersson S. Early oxygen levels contribute to brain injury in extremely preterm infants. Pediatr Res 2021; 90:131-139. [PMID: 33753894 PMCID: PMC7984503 DOI: 10.1038/s41390-021-01460-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/10/2021] [Accepted: 02/16/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Extremely low gestational age newborns (ELGANs) are at risk of neurodevelopmental impairments that may originate in early NICU care. We hypothesized that early oxygen saturations (SpO2), arterial pO2 levels, and supplemental oxygen (FiO2) would associate with later neuroanatomic changes. METHODS SpO2, arterial blood gases, and FiO2 from 73 ELGANs (GA 26.4 ± 1.2; BW 867 ± 179 g) during the first 3 postnatal days were correlated with later white matter injury (WM, MRI, n = 69), secondary cortical somatosensory processing in magnetoencephalography (MEG-SII, n = 39), Hempel neurological examination (n = 66), and developmental quotients of Griffiths Mental Developmental Scales (GMDS, n = 58). RESULTS The ELGANs with later WM abnormalities exhibited lower SpO2 and pO2 levels, and higher FiO2 need during the first 3 days than those with normal WM. They also had higher pCO2 values. The infants with abnormal MEG-SII showed opposite findings, i.e., displayed higher SpO2 and pO2 levels and lower FiO2 need, than those with better outcomes. Severe WM changes and abnormal MEG-SII were correlated with adverse neurodevelopment. CONCLUSIONS Low oxygen levels and high FiO2 need during the NICU care associate with WM abnormalities, whereas higher oxygen levels correlate with abnormal MEG-SII. The results may indicate certain brain structures being more vulnerable to hypoxia and others to hyperoxia, thus emphasizing the role of strict saturation targets. IMPACT This study indicates that both abnormally low and high oxygen levels during early NICU care are harmful for later neurodevelopmental outcomes in preterm neonates. Specific brain structures seem to be vulnerable to low and others to high oxygen levels. The findings may have clinical implications as oxygen is one of the most common therapies given in NICUs. The results emphasize the role of strict saturation targets during the early postnatal period in preterm infants.
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Affiliation(s)
- Krista Rantakari
- Children's Hospital, Pediatric Research Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland.
| | - Olli-Pekka Rinta-Koski
- grid.5373.20000000108389418Department of Computer Science, Aalto University School of Science, Espoo, Finland
| | - Marjo Metsäranta
- grid.7737.40000 0004 0410 2071Children’s Hospital, Pediatric Research Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Jaakko Hollmén
- grid.5373.20000000108389418Department of Computer Science, Aalto University School of Science, Espoo, Finland ,grid.10548.380000 0004 1936 9377Department of Computer and Systems Sciences, Stockholm University, Stockholm, Sweden
| | - Simo Särkkä
- grid.5373.20000000108389418Department of Computer Science, Aalto University School of Science, Espoo, Finland
| | - Petri Rahkonen
- grid.7737.40000 0004 0410 2071Children’s Hospital, Pediatric Research Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Aulikki Lano
- grid.7737.40000 0004 0410 2071Pediatric Neurology, Children’s Hospital, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Leena Lauronen
- grid.7737.40000 0004 0410 2071Clinical Neurophysiology, HUS Medical Imaging Center, Children’s Hospital, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Päivi Nevalainen
- grid.7737.40000 0004 0410 2071Clinical Neurophysiology, HUS Medical Imaging Center, Children’s Hospital, Helsinki University Hospital, University of Helsinki, Helsinki, Finland ,grid.7737.40000 0004 0410 2071BioMag Laboratory, HUS Medical Imaging Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Markus J. Leskinen
- grid.7737.40000 0004 0410 2071Children’s Hospital, Pediatric Research Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Sture Andersson
- grid.7737.40000 0004 0410 2071Children’s Hospital, Pediatric Research Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
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Popescu CR, Tembo B, Chifisi R, Cavanagh MMM, Lee AHY, Chiluzi B, Ciccone EJ, Tegha G, Alonso-Prieto E, Claydon J, Dunsmuir D, Irvine M, Dumont G, Ansermino JM, Wiens MO, Juliano JJ, Kissoon N, Mvalo T, Lufesi N, Chiume-Kayuni M, Lavoie PM. Whole blood genome-wide transcriptome profiling and metagenomics next-generation sequencing in young infants with suspected sepsis in a low-and middle-income country: A study protocol. Gates Open Res 2020; 4:139. [PMID: 33447735 PMCID: PMC7783117 DOI: 10.12688/gatesopenres.13172.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/11/2020] [Indexed: 11/24/2022] Open
Abstract
Conducting collaborative and comprehensive epidemiological research on neonatal sepsis in low- and middle-income countries (LMICs) is challenging due to a lack of diagnostic tests. This prospective study protocol aims to obtain epidemiological data on bacterial sepsis in newborns and young infants at Kamuzu Central Hospital in Lilongwe, Malawi. The main goal is to determine if the use of whole blood transcriptome host immune response signatures can help in the identification of infants who have sepsis of bacterial causes. The protocol includes a detailed clinical assessment with vital sign measurements, strict aseptic blood culture protocol with state-of-the-art microbial analyses and RNA-sequencing and metagenomics evaluations of host responses and pathogens, respectively. We also discuss the directions of a brief analysis plan for RNA sequencing data. This study will provide robust epidemiological data for sepsis in neonates and young infants in a setting where sepsis confers an inordinate burden of disease.
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Affiliation(s)
- Constantin R Popescu
- BC Children's Hospital Research Institute, Vancouver, BC, Canada.,Department of Pediatrics, Université Laval, Québec, QC, Canada
| | | | | | | | - Amy Huei-Yi Lee
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada
| | | | - Emily J Ciccone
- Department of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Gerald Tegha
- University of North Carolina Project Malawi, Lilongwe, Malawi
| | - Esther Alonso-Prieto
- BC Children's & Women's Health Centre, Vancouver, BC, Canada.,Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Jennifer Claydon
- BC Children's Hospital Research Institute, Vancouver, BC, Canada
| | - Dustin Dunsmuir
- BC Children's Hospital Research Institute, Vancouver, BC, Canada.,Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Mike Irvine
- BC Children's Hospital Research Institute, Vancouver, BC, Canada
| | - Guy Dumont
- BC Children's Hospital Research Institute, Vancouver, BC, Canada.,Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC, Canada
| | - J Mark Ansermino
- BC Children's Hospital Research Institute, Vancouver, BC, Canada.,BC Children's & Women's Health Centre, Vancouver, BC, Canada.,Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Matthew O Wiens
- BC Children's Hospital Research Institute, Vancouver, BC, Canada.,Department of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, Vancouver, BC, Canada.,Walimu, Kampala, Uganda.,Mbarara University of Science and Technology, Mbarara, Uganda
| | - Jonathan J Juliano
- Division of Infectious Diseases, School of Medicine, University of North Carolina, Chapel Hill, NC, USA.,Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA.,Curriculum in Genetics and Molecular Biology, School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Niranjan Kissoon
- BC Children's Hospital Research Institute, Vancouver, BC, Canada.,BC Children's & Women's Health Centre, Vancouver, BC, Canada.,Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Tisungane Mvalo
- University of North Carolina Project Malawi, Lilongwe, Malawi.,Department of Pediatrics, University of North Carolina, Chapel Hill, NC, USA
| | - Norman Lufesi
- Clinical Services Directorate, Ministry of Health, Lilongwe, Malawi
| | | | - Pascal M Lavoie
- BC Children's Hospital Research Institute, Vancouver, BC, Canada.,BC Children's & Women's Health Centre, Vancouver, BC, Canada.,Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
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3
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Popescu CR, Tembo B, Chifisi R, Cavanagh MM, Lee AHY, Chiluzi B, Ciccone EJ, Tegha G, Alonso-Prieto E, Claydon J, Dunsmuir D, Irvine M, Dumont G, Ansermino JM, Wiens MO, Juliano JJ, Kissoon N, Mvalo T, Lufesi N, Chiume-Kayuni M, Lavoie PM. Whole blood genome-wide transcriptome profiling and metagenomics next-generation sequencing in young infants with suspected sepsis in low-and middle-income countries: A study protocol. Gates Open Res 2020; 4:139. [DOI: 10.12688/gatesopenres.13172.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2020] [Indexed: 11/20/2022] Open
Abstract
Conducting collaborative and comprehensive epidemiological research on neonatal sepsis in low- and middle-income countries (LMICs) is challenging due to a lack of diagnostic tests. This prospective study protocol aims to obtain epidemiological data on bacterial sepsis in newborns and young infants at Kamuzu Central Hospital in Lilongwe, Malawi. The main goal is to determine if the use of whole blood transcriptome host immune response signatures can help in the identification of infants who have sepsis of bacterial causes. The protocol includes a detailed clinical assessment with vital sign measurements, strict aseptic blood culture protocol with state-of-the-art microbial analyses and RNA-sequencing and metagenomics evaluations of host responses and pathogens, respectively. We also discuss the directions of a brief analysis plan for RNA sequencing data. This study will provide robust epidemiological data for sepsis in neonates and young infants in a setting where sepsis confers an inordinate burden of disease.
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Xiao J, Li X, Fan X, Fan F, Lei H, Li C. Gene Expression Profile Reveals Hematopoietic-Related Molecule Changes in Response to Hypoxic Exposure. DNA Cell Biol 2020; 39:548-554. [PMID: 32155344 DOI: 10.1089/dna.2019.5004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The Qing-Tibet Plateau is characterized by low oxygen pressure, which is an important biomedical and ecological stressor. However, the variation in gene expression during periods of stay on the plateau has not been well studied. We recruited eight volunteers to stay on the plateau for 3, 7, and 30 days. Human Clariom D arrays were used to measure transcriptome changes in the mRNA expression profiles in these volunteers' blood. Analysis of variance (ANOVA) indicated that 699 genes were significantly differentially expressed in response to entering the plateau during hypoxic exposure. The genes with changes in transcript abundance were involved in the terms phosphoprotein, acetylation, protein binding, and protein transport. Furthermore, numerous genes involved in hematopoietic functions, including erythropoiesis and immunoregulation, were differentially expressed in response to hypoxia. This phenomenon may be one of reasons why the majority of people entering the plateau do not have excessive erythrocyte proliferation and are susceptible to infection.
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Affiliation(s)
- Jun Xiao
- Department of Blood Transfusion, Air Force Medical Center, PLA, Beijing, P.R. China
| | - Xiaowei Li
- Department of Blood Transfusion, Air Force Medical Center, PLA, Beijing, P.R. China
| | - Xiu Fan
- Department of Blood Transfusion, Air Force Medical Center, PLA, Beijing, P.R. China
| | - Fengyan Fan
- Department of Blood Transfusion, Air Force Medical Center, PLA, Beijing, P.R. China
| | - Huifen Lei
- Department of Blood Transfusion, Air Force Medical Center, PLA, Beijing, P.R. China
| | - Cuiying Li
- Department of Blood Transfusion, Air Force Medical Center, PLA, Beijing, P.R. China
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Lu K, Huang J, Yang Y, Lu D. Predicting the target genes of miRNAs in preterm via targetscore algorithm. Exp Ther Med 2019; 17:2085-2090. [PMID: 30867695 PMCID: PMC6396006 DOI: 10.3892/etm.2019.7179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 12/07/2018] [Indexed: 12/22/2022] Open
Abstract
Compared with normal neonates, preterm infants have an immature immune system which causes them to have a higher morbidity rate and even death. In order to reduce the mortality of newborns, we need to find the target genes which affect the preterm and understand their mechanism. It has been verified that microRNA (miRNA)-200 and miRNA-182 are closely related to the incidence of preterm. Therefore, it is significant to predict the target genes which are regulated by them for further understanding the mechanism of preterm. We chose the targetscore method for calculating the variational Bayesian-Gaussian mixture model (VB-GMM) as the target genes prediction method. It is designed for condition-specific target predictions and not limited to predict conserved genes, so the results are more accurate than previous sequence-based target prediction algorithms. In this study, our major contribution is to predict the target mRNAs of the chosen miRNAs with the gene expression profiles and a new method, which can effectively improve the accuracy of the prediction.
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Affiliation(s)
- Kexin Lu
- Department of Obstetrics and Gynecology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
| | - Junzhi Huang
- Department of Obstetrics and Gynecology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
| | - Yandong Yang
- Department of Obstetrics and Gynecology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
| | - Dongli Lu
- Department of Neurology, Binzhou Medical University Hospital, Binzhou, Shandong 256603, P.R. China
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Di Fiore JM, Dylag AM, Honomichl RD, Hibbs AM, Martin RJ, Tatsuoka C, Raffay TM. Early inspired oxygen and intermittent hypoxemic events in extremely premature infants are associated with asthma medication use at 2 years of age. J Perinatol 2019; 39:203-211. [PMID: 30367103 PMCID: PMC6351157 DOI: 10.1038/s41372-018-0264-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/07/2018] [Accepted: 10/08/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Extremely premature infants are at risk for childhood wheezing. Early respiratory support and intermittent hypoxemia (IH) events may be associated with adverse breathing outcomes. STUDY DESIGN A single-center retrospective cohort study of 137 premature infants <28 weeks gestational age characterized the associations of cumulative oxygen, cumulative mean airway pressure, IH, and oxygen saturation (SpO2) on the primary outcome of prescription asthma medication use at 2-year follow-up. Relative risk was calculated by generalized estimating equations. RESULTS Reported asthma medication use was 46%. At 1-3 days of age, elevated cumulative oxygen exposure, increased daily IH, and lower mean SpO2 (adjusted for gestational age and sex) and increased cumulative mean airway pressure exposure (unadjusted) were associated with asthma medication use. CONCLUSION Increased oxygen and frequent IH events during just the first 3 days of age may help identify extremely premature newborns at risk for symptomatic childhood wheezing requiring prescription asthma medications.
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Affiliation(s)
- Juliann M. Di Fiore
- Division of Neonatology, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH
| | - Andrew M. Dylag
- Division of Neonatology, Golisano Children’s Hospital, University of Rochester, Rochester, NY
| | - Ryan D. Honomichl
- Division of Neurology, University Hospitals of Cleveland, Case Western Reserve University, Cleveland, OH
| | - Anna Maria Hibbs
- Division of Neonatology, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH
| | - Richard J. Martin
- Division of Neonatology, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH
| | - Curtis Tatsuoka
- Division of Neurology, University Hospitals of Cleveland, Case Western Reserve University, Cleveland, OH
| | - Thomas M. Raffay
- Division of Neonatology, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH
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