Immunologic Deficiency Syndromes Clinical Trial
Official title:
Novel Mechanisms and Approaches to Treat Neonatal Sepsis: Adjuvant Therapies, Host Microbiome, and Genomic Expression and Functional Capacity of Innate Immune Cells
Mortality related to neonatal sepsis exceeds 1 million deaths worldwide; the highest risk of mortality is in preterm neonates, especially low birth weight (LBW), and very low birth weight (VLBW) neonates. The estimated cost of caring for these patients is approximately $700 million in the US alone. In an effort to help mature the neonatal immune system, several adjuvant therapies have been studied; however, none have been implemented in clinical practice. One of the most frequently considered targets for adjuvant therapy is toll-like receptors (TLRs). TLRs detect conserved molecular products of microorganisms (lipopolysaccharide (LPS), and initiate immunity and inflammation. Early adjuvant administration in VLBW infants may be a viable approach to reducing the incidence of early and late sepsis. This research study will characterize immune genomic expression and functional capacity at the time of birth in both term and preterm neonates and determine what effects, if any, that adjuvants have on this function. Additionally, this study will seek to determine if immune function correlates with certain microbiota.
Blood samples will be collected from three populations: preterm infants, term infants and healthy adult controls. In addition, a collection of meconium (<1mL) from the diaper of these term and preterm neonates; 1. Term neonates (gestational age 37-42 weeks) between birth and 72 hours of life who have blood collected for the following clinical indications: a. Blood will be collected at 0-72 hours of life from neonates that are undergoing state metabolic screens or for clinical evaluation jaundice. The sample will be obtained during the standard of care state metabolic screen or for clinical evaluation of jaundice. The neonate will only have an extra drop of blood placed (500-700 micro-liters) in a tube during the heel sticks. Neonates will only have 1 sample drawn throughout the duration of the study. 2. Preterm neonates (gestational age 24-37 weeks) consisting of two populations between birth and 72 hours of life who have blood collected for the following clinical indications: 1. Blood will be collected at 0-72 hours of life from neonates that are otherwise healthy and do not require additional laboratory testing who are undergoing state metabolic screens or for evaluation of jaundice. The neonate will only have an extra drop of blood placed (500-700 microliters) in a tube during the heel stick. Neonates will only have 1 sample drawn throughout the duration of the study. 2. A second group of premature neonates will have blood drawn for complications related to prematurity (sepsis work-up). The neonate will only have an extra drop of blood placed (500-700 micro-liters) in a tube during one of these clinical blood draws. 3. Healthy adult controls will have (4milleters) blood collected by way of vein puncture. For all infants, term and preterm, the following data will be collected at the time of blood collection: gender, gestational age, weight, mechanism of birth (vaginal vs cesarean section), evidence of infectious complication (chorioamnionitis, prolonged rupture of membranes, maternal group B strep colonization, hypoglycemia), use of perinatal antibiotics or steroids, laboratory values available in the electronic medial record (CBC, CMP, Lactic acid, CRP) and Apgar scores will be collected from each patient. Additionally the clinical outcomes of these patients, term and preterm,will be collected until time of discharge but not to exceed 90 days. ;
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