Retinopathy of prematurity (ROP) is a potentially preventable disorder of the retina that occurs predominantly in preterm newborns. Recent evidence suggests that exposure to systemic inflammation might contribute to the etiology and pathogenesis of ROP. In this application, we propose to (objective #1) measure in existing blood samples from a multi-center, NIH-funded cohort study of extremely low gestational age newborns (ELGAN study, U01 NS40069) 18 protein biomarkers in 1,206 ELGANs and add this information to an existing database of 25 biomarkers we have already measured in 924 of the same 1,206 ELGANs. We will also measure these previous 25 markers in the remainder of 282 newborns. The result will be the currently largest biomarker database worldwide of 43 biomarkers (from postnatal days 1, 7, 14, 21, and 28) available for 1,206 newborns with a gestational age <28wks. The new biomarker measurements will be done by the same ELGAN-Co-investigators who measured the initial 25 biomarkers using the Meso Scale Discovery (MSD) multiplex platform. The additional biomarkers were selected specifically for ROP association studies, based on published evidence that the availability of oxygen, the presence of inflammation, the concepts of angiogenesis and erythropoiesis, as well as pre-existing maternal pregnancy conditions such as preeclampsia all appear to play roles in ROP etiology and pathogenesis. We also propose (objective #2) to subsequently perform epidemiologic (risk) analyses using advanced multivariable biostatistical techniques. We will test two specific null-hypotheses: (1) Biomarkers do not predict severe ROP occurrence;and (2) biomarkers do not predict ROP progression. Both hypotheses will be tested by members of the original ELGAN data analysis team in comprehensive multivariable regression models that allow for appropriate control for confounding and for stratified analyses targeted at the discovery of effect modifiers. Pre hoc power analyses suggest that our sample size is large enough to detect appreciable relative risks with sufficient statistical power. The results from our project will have a significnt impact on our current understanding of ROP pathogenesis and will help pave the way towards new prevention and treatment strategies.
Retinopathy of prematurity (ROP) is a disorder of the developing eye that occurs in approximately 15,000 preterm newborns per year in the US and leads to blindness in about 500. Our project will contribute directly to an improved understanding of the causation of ROP by providing novel data on inflammation-associated substances circulating in the preterm baby's blood and their associations with ROP occurrence and progression, thereby elucidating potential target mechanisms for prevention and intervention.
|Babata, Kikelomo; Bright, H Reeve; Allred, Elizabeth N et al. (2018) Socioemotional dysfunctions at age 10?years in extremely preterm newborns with late-onset bacteremia. Early Hum Dev 121:1-7|
|Korzeniewski, Steven J; Allred, Elizabeth N; O'Shea, T Michael et al. (2018) Elevated protein concentrations in newborn blood and the risks of autism spectrum disorder, and of social impairment, at age 10 years among infants born before the 28th week of gestation. Transl Psychiatry 8:115|
|Leviton, Alan; Joseph, Robert M; Fichorova, Raina N et al. (2018) Executive Dysfunction Early Postnatal Biomarkers among Children Born Extremely Preterm. J Neuroimmune Pharmacol :|
|Leviton, Alan; Allred, Elizabeth N; Fichorova, Raina N et al. (2018) Circulating biomarkers in extremely preterm infants associated with ultrasound indicators of brain damage. Eur J Paediatr Neurol 22:440-450|
|van der Burg, Jelske W; O'Shea, T Michael; Kuban, Karl et al. (2018) Are Extremely Low Gestational Age Newborns Born to Obese Women at Increased Risk of Cerebral Palsy at 2 Years? J Child Neurol 33:216-224|
|Leviton, Alan; Dammann, Olaf; Allred, Elizabeth N et al. (2018) Neonatal systemic inflammation and the risk of low scores on measures of reading and mathematics achievement at age 10 years among children born extremely preterm. Int J Dev Neurosci 66:45-53|
|Leviton, Alan; Allred, Elizabeth N; Yamamoto, Hidemi et al. (2017) Antecedents and correlates of blood concentrations of neurotrophic growth factors in very preterm newborns. Cytokine 94:21-28|
|Bright, H Reeve; Babata, Kikelomo; Allred, Elizabeth N et al. (2017) Neurocognitive Outcomes at 10 Years of Age in Extremely Preterm Newborns with Late-Onset Bacteremia. J Pediatr 187:43-49.e1|
|Logan, J W; Dammann, O; Allred, E N et al. (2017) Early postnatal illness severity scores predict neurodevelopmental impairments at 10 years of age in children born extremely preterm. J Perinatol 37:606-614|
|Holm, Mari; Morken, Tora S; Fichorova, Raina N et al. (2017) Systemic Inflammation-Associated Proteins and Retinopathy of Prematurity in Infants Born Before the 28th Week of Gestation. Invest Ophthalmol Vis Sci 58:6419-6428|
Showing the most recent 10 out of 33 publications