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Related Concept Videos

Pharmacokinetics in Pediatric Patients: Drug Distribution01:17

Pharmacokinetics in Pediatric Patients: Drug Distribution

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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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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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Blood Studies for Cardiovascular System III: Serum Lipid Profile01:25

Blood Studies for Cardiovascular System III: Serum Lipid Profile

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Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
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Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption01:23

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Understanding the physiological differences in the pediatric population is crucial for effective pharmacotherapy. Neonates, infants, and children exhibit significant variations in gastric pH, gastric emptying time, intestinal transit time, and biliary function. These variations profoundly affect oral drug absorption, necessitating a nuanced approach to pediatric dosing.Neonates present with a unique physiological profile, having a gastric pH greater than 4 and faster and more irregular gastric...
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Related Experiment Video

Updated: Nov 9, 2025

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Reference ranges for sphingosine-1-phosphate in neonates.

Chinedu Ulrich Ebenebe1, Mirjam von Lucadou2, Eileen Moritz3

  • 1Department of Pediatrics, Division of Neonatology and Pediatric Intensive Care, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Journal of Perinatal Medicine
|April 15, 2021
PubMed
Summary
This summary is machine-generated.

Neonates have higher sphingosine-1-phosphate (S1P) serum levels than adults, possibly due to its crucial role in development. These findings establish reference ranges for S1P in newborns.

Keywords:
neonatesreferences rangessphingosine-1-phosphate

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Area of Science:

  • Biochemistry
  • Neonatal Physiology
  • Immunology

Background:

  • Sphingosine-1-phosphate (S1P) is a vital signaling lipid regulating embryonic development, homeostasis, and immune responses.
  • Disrupted S1P homeostasis is linked to diseases compromising immune function and vascular integrity.
  • Previous research has not established S1P levels in neonatal populations.

Purpose of the Study:

  • To determine serum sphingosine-1-phosphate (S1P) concentrations in neonates.
  • To establish reference ranges for S1P levels in newborns.
  • To explore correlations between neonatal S1P levels and demographic/cellular factors.

Main Methods:

  • Analyzed S1P levels in umbilical cord blood from 460 neonates (term and preterm).
  • Compared neonatal S1P levels to a cohort of healthy adult blood donors.
  • Correlated S1P levels with demographic data, S1P cellular sources, and inflammatory markers.

Main Results:

  • Neonatal median S1P serum level was 1.70 μmol/L, significantly higher than adult values.
  • S1P levels showed a positive correlation with red blood cell count (p<0.001).
  • S1P levels exhibited a negative correlation with neutrophil precursors (p=0.028).

Conclusions:

  • Elevated S1P in neonates may stem from increased S1P content in cellular sources, essential for embryogenesis.
  • The established S1P ranges provide a crucial reference for future neonatal research.
  • Understanding neonatal S1P levels is important for assessing immune and vascular health in newborns.