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Related Concept Videos

Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

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In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses...
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Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

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In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
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Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

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Drug distribution in the pediatric population exhibits unique challenges and considerations due to the physiological differences between children, particularly neonates and infants, and adults. A crucial aspect of pediatric pharmacology is understanding how these differences impact the pharmacokinetics of various drugs, necessitating age-specific dosing strategies to ensure efficacy and safety.Neonates and infants have a higher total body water content, ~75%–90% of their body weight,...
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Paediatric CSF acylcarnitine reference ranges.

Ontefetse Neo Plaatjie1, A Marceline Tutu Van Furth1,2, Regan Solomons3

  • 1Department of Biochemistry, Biomedical and Molecular Metabolism Research, Faculty of Natural and Agricultural Sciences, North-West University, Potchefstroom, South Africa.

Frontiers in Molecular Biosciences
|October 17, 2025
PubMed
Summary
This summary is machine-generated.

This study establishes crucial reference ranges for cerebrospinal fluid (CSF) acylcarnitine levels in children. These findings aid in understanding pediatric central nervous system (CNS) disorders and acylcarnitine metabolism.

Keywords:
acylcarnitinescerebrospinal fluid (CSF)childrenpaediatricsreference ranges

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Area of Science:

  • Biochemistry
  • Neuroscience
  • Pediatrics

Background:

  • Acylcarnitines are vital for energy metabolism, particularly fatty acid beta-oxidation and brain lipid synthesis.
  • Altered acylcarnitine levels in plasma and CSF are linked to central nervous system (CNS) disorders.
  • Current CSF acylcarnitine research predominantly focuses on adults, leaving a pediatric data gap.

Purpose of the Study:

  • To establish normal reference ranges for CSF acylcarnitine concentrations in a pediatric cohort.
  • To address the lack of pediatric-specific data for CSF acylcarnitine analysis.
  • To provide a foundation for investigating acylcarnitines in pediatric CNS conditions.

Main Methods:

  • Liquid chromatography-tandem mass spectrometry (LC-MS/MS) was employed for acylcarnitine profiling.
  • CSF samples were collected from 57 children without meningitis.
  • Quantitative analysis of various acylcarnitine species was performed.

Main Results:

  • Established reference ranges for CSF acylcarnitine concentrations in non-meningitis children.
  • Reported concentrations spanned from 0.01 µM to 4.21 µM.
  • Provided the first comprehensive dataset for pediatric CSF acylcarnitines.

Conclusions:

  • The study successfully generated essential reference ranges for pediatric CSF acylcarnitines.
  • These findings are critical for diagnosing and understanding pediatric CNS disorders.
  • This research bridges a significant knowledge gap in pediatric neuro-metabolism.