Novel Mechanisms and Approaches to Treat Neonatal Sepsis
NCT ID: NCT02554630
Last Updated: 2023-02-10
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
142 participants
OBSERVATIONAL
2016-02-29
2022-10-21
Brief Summary
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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.
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Detailed Description
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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.
Conditions
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Study Design
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CASE_CONTROL
PROSPECTIVE
Study Groups
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Preterm Neonate
Neonates of gestational age 24-37 weeks. Blood collection will be performed at the time of a clinically required heelstick or blood draw. Microfluidic techniques, utilizing whole blood, will be employed to characterize the baseline genomic profile and functional capacity of immune cells. Adjuvant drugs will be employed ex-vivo to determine if adjuvant therapies change genomic expression and bolster immune function. Meconium will be collected for microbiome analysis. Clinical outcomes will be recorded from the electronic medical record.
Adjuvant
Blood will be incubated, ex-vivo, with one of the adjuvant therapies or no adjuvant and then, using microfluidic techniques the immune genomic profile and the functional capacity of immune cells will be assessed.
Blood Collection
Blood collection will be performed on all groups.
Term Neonates
Neonates of gestational age 37-42 weeks. Blood collection will be performed at the time of a clinically required heelstick or blood draw. Microfluidic techniques, utilizing whole blood, will be employed to characterize the baseline genomic profile and functional capacity of immune cells. Adjuvant drugs will be employed ex-vivo to determine if adjuvant therapies change genomic expression and bolster immune function. Meconium will be collected for microbiome analysis. Clinical outcomes will be recorded from the electronic medical record.
Adjuvant
Blood will be incubated, ex-vivo, with one of the adjuvant therapies or no adjuvant and then, using microfluidic techniques the immune genomic profile and the functional capacity of immune cells will be assessed.
Blood Collection
Blood collection will be performed on all groups.
Healthy Adult Control
Healthy Adult aged 18-55 years will undergo a single blood collection by the way of vein puncture. Microfluidic techniques, utilizing whole blood, will be employed to evaluate the genomic profile and functional capacity of immune cells. Adjuvant drugs will be employed ex-vivo to determine if adjuvant therapies change genomic expression and bolster immune function.
Adjuvant
Blood will be incubated, ex-vivo, with one of the adjuvant therapies or no adjuvant and then, using microfluidic techniques the immune genomic profile and the functional capacity of immune cells will be assessed.
Blood Collection
Blood collection will be performed on all groups.
Interventions
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Adjuvant
Blood will be incubated, ex-vivo, with one of the adjuvant therapies or no adjuvant and then, using microfluidic techniques the immune genomic profile and the functional capacity of immune cells will be assessed.
Blood Collection
Blood collection will be performed on all groups.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Consent to participate in the study
* Age \>18 years old, \<55 years old
Exclusion Criteria
Healthy Adult Controls
* Age \<18 years old, \>55 years old
* Severe pre-existing organ dysfunction
* Oncolytic therapy within 14 days
* HIV positive status
* Current use of chronic steroids
55 Years
ALL
Yes
Sponsors
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National Institute of General Medical Sciences (NIGMS)
NIH
Surgical Infection Society
UNKNOWN
University of Florida
OTHER
Responsible Party
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Principal Investigators
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Shawn Larson, MD
Role: PRINCIPAL_INVESTIGATOR
University of Florida
Locations
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UF Health
Gainesville, Florida, United States
Countries
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References
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Watson RS, Carcillo JA, Linde-Zwirble WT, Clermont G, Lidicker J, Angus DC. The epidemiology of severe sepsis in children in the United States. Am J Respir Crit Care Med. 2003 Mar 1;167(5):695-701. doi: 10.1164/rccm.200207-682OC. Epub 2002 Nov 14.
Lawn JE, Kerber K, Enweronu-Laryea C, Cousens S. 3.6 million neonatal deaths--what is progressing and what is not? Semin Perinatol. 2010 Dec;34(6):371-86. doi: 10.1053/j.semperi.2010.09.011.
Cuenca AG, Wynn JL, Moldawer LL, Levy O. Role of innate immunity in neonatal infection. Am J Perinatol. 2013 Feb;30(2):105-12. doi: 10.1055/s-0032-1333412. Epub 2013 Jan 7.
PrabhuDas M, Adkins B, Gans H, King C, Levy O, Ramilo O, Siegrist CA. Challenges in infant immunity: implications for responses to infection and vaccines. Nat Immunol. 2011 Mar;12(3):189-94. doi: 10.1038/ni0311-189. No abstract available.
Wynn JL, Scumpia PO, Winfield RD, Delano MJ, Kelly-Scumpia K, Barker T, Ungaro R, Levy O, Moldawer LL. Defective innate immunity predisposes murine neonates to poor sepsis outcome but is reversed by TLR agonists. Blood. 2008 Sep 1;112(5):1750-8. doi: 10.1182/blood-2008-01-130500. Epub 2008 Jun 30.
Wynn JL, Levy O. Role of innate host defenses in susceptibility to early-onset neonatal sepsis. Clin Perinatol. 2010 Jun;37(2):307-37. doi: 10.1016/j.clp.2010.04.001.
Yost CC, Cody MJ, Harris ES, Thornton NL, McInturff AM, Martinez ML, Chandler NB, Rodesch CK, Albertine KH, Petti CA, Weyrich AS, Zimmerman GA. Impaired neutrophil extracellular trap (NET) formation: a novel innate immune deficiency of human neonates. Blood. 2009 Jun 18;113(25):6419-27. doi: 10.1182/blood-2008-07-171629. Epub 2009 Feb 12.
Gessler P, Nebe T, Birle A, Haas N, Kachel W. Neutrophil respiratory burst in term and preterm neonates without signs of infection and in those with increased levels of C-reactive protein. Pediatr Res. 1996 May;39(5):843-8. doi: 10.1203/00006450-199605000-00017.
Gentile LF, Nacionales DC, Lopez MC, Vanzant E, Cuenca A, Cuenca AG, Ungaro R, Szpila BE, Larson S, Joseph A, Moore FA, Leeuwenburgh C, Baker HV, Moldawer LL, Efron PA. Protective immunity and defects in the neonatal and elderly immune response to sepsis. J Immunol. 2014 Apr 1;192(7):3156-65. doi: 10.4049/jimmunol.1301726. Epub 2014 Mar 3.
Cuenca AG, Cuenca AL, Gentile LF, Efron PA, Islam S, Moldawer LL, Kays DW, Larson SD. Delayed emergency myelopoiesis following polymicrobial sepsis in neonates. Innate Immun. 2015 May;21(4):386-91. doi: 10.1177/1753425914542445. Epub 2014 Aug 7.
Sweeney SE, Firestein GS. Primer: signal transduction in rheumatic disease--a clinician's guide. Nat Clin Pract Rheumatol. 2007 Nov;3(11):651-60. doi: 10.1038/ncprheum0631.
Kollmann TR, Crabtree J, Rein-Weston A, Blimkie D, Thommai F, Wang XY, Lavoie PM, Furlong J, Fortuno ES 3rd, Hajjar AM, Hawkins NR, Self SG, Wilson CB. Neonatal innate TLR-mediated responses are distinct from those of adults. J Immunol. 2009 Dec 1;183(11):7150-60. doi: 10.4049/jimmunol.0901481. Epub 2009 Nov 16.
Other Identifiers
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IRB201500447 -N
Identifier Type: -
Identifier Source: org_study_id
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