- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT00392730
Neurodevelopment and Neuroimaging in Parenterally-fed Infants and Young Children
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Specific Aims have been designed to test these hypotheses in three developmentally distinct populations:
- preterm infants and
- full term infants in the Neonatal Intensive Care Unit (NICU) requiring prolonged PN and
- older infants and young children on home PN.
Mn neurotoxicity will be investigated by longitudinal assessments of cognitive (executive functioning battery), neurodevelopmental (Bayley III Scales of Infant Development), and psychophysiological (event-related potential) measures and will be correlated with brain deposition of Mn using the technique of magnetic resonance (MR) relaxometry in a vulnerable population of infants receiving Mn-supplemented PN and age-matched controls. This proposal addresses a clinically relevant and unexplored link between nutritional practices, brain Mn deposition and neurodevelopmental sequelae in an at-risk population of infants and young children utilizing state-of-the-art magnetic resonance imaging (MRI) technology and neurodevelopmental assessment techniques. The potential for increased brain Mn accumulation in infants, and by inference, the potential health risks associated with elevated brain Mn burden, represents crucial, unexplored issues of exposure and susceptibility. The potential contribution of Mn toxicity to the poor outcomes of infants dependent for an extended time on PN has not been fully acknowledged or studied. Improved understanding of the relationships between Mn exposure and developmental outcomes will undoubtedly lead to altered clinical practices and more careful monitoring of Mn intake and blood and/or brain Mn levels in high risk infants. Our studies will also contribute to an improved understanding of the value of non-invasive MR imaging in the monitoring of pediatric patients on PN.
Studientyp
Einschreibung (Tatsächlich)
Kontakte und Standorte
Studienorte
-
-
Tennessee
-
Nashville, Tennessee, Vereinigte Staaten, 37232-9544
- Vanderbilt Children's Hospital
-
-
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Probenahmeverfahren
Studienpopulation
Beschreibung
Inclusion Criteria:
- Greater than 30 days postnatal age
- In the preceding four weeks, have received >75% of their nutrition as Mn-supplemented PN
- Clinically stable for transport to the MR facility
- Signed parental consent.
Or healthy age-matched controls
Exclusion Criteria:
- Any infant not expected to survive to the age of 3 months or
- Not expected to achieve sufficient clinical stability to tolerate the MRI procedure.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
Kohorten und Interventionen
Gruppe / Kohorte |
Intervention / Behandlung |
---|---|
1
Preterm infants in NICU and age-matched controls
|
Withhold Mn-containing trace element cocktail and add zinc, copper and chromium individually to PN
|
2
Term infants in NICU and age-matched controls
|
Withhold Mn-containing trace element cocktail and add zinc, copper and chromium individually to PN
|
3
Children on home PN (to age 6) and age-matched controls
|
Withhold Mn-containing trace element cocktail and add zinc, copper and chromium individually to PN
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Brain Mn deposition measured by MR relaxometry
Zeitfenster: baseline (at study enrolment)
|
Mn neurotoxicity will be investigated by magnetic resonance (MR) relaxometry in a population of infants receiving Mn-supplemented parenteral nutrition and age-matched controls.
|
baseline (at study enrolment)
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Neurodevelopmental outcomes
Zeitfenster: 2 years
|
Neurodevelopment will be investigated by longitudinal assessments of cognitive (executive functioning battery), neurodevelopmental (Bayley III Scales of Infant Development), and psychophysiological (event-related potential) measures
|
2 years
|
Mitarbeiter und Ermittler
Sponsor
Mitarbeiter
Ermittler
- Hauptermittler: Judy L Aschner, MD, Vanderbilt University Medical Center
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- Aschner JL, Aschner M. Nutritional aspects of manganese homeostasis. Mol Aspects Med. 2005 Aug-Oct;26(4-5):353-62. doi: 10.1016/j.mam.2005.07.003.
- Fitsanakis VA, Zhang N, Avison MJ, Gore JC, Aschner JL, Aschner M. The use of magnetic resonance imaging (MRI) in the study of manganese neurotoxicity. Neurotoxicology. 2006 Sep;27(5):798-806. doi: 10.1016/j.neuro.2006.03.001. Epub 2006 Apr 18.
- Fitsanakis VA, Piccola G, Marreilha dos Santos AP, Aschner JL, Aschner M. Putative proteins involved in manganese transport across the blood-brain barrier. Hum Exp Toxicol. 2007 Apr;26(4):295-302. doi: 10.1177/0960327107070496.
- Yin Z, Aschner JL, dos Santos AP, Aschner M. Mitochondrial-dependent manganese neurotoxicity in rat primary astrocyte cultures. Brain Res. 2008 Apr 8;1203:1-11. doi: 10.1016/j.brainres.2008.01.079. Epub 2008 Feb 11.
- Aschner JL, Anderson A, Slaughter JC, Aschner M, Steele S, Beller A, Mouvery A, Furlong HM, Maitre NL. Neuroimaging identifies increased manganese deposition in infants receiving parenteral nutrition. Am J Clin Nutr. 2015 Dec;102(6):1482-9. doi: 10.3945/ajcn.115.116285. Epub 2015 Nov 11.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- Gerber07-01-06JLA
- ES013730
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