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Pharmacokinetics in Pediatric Patients: Drug Metabolism

Pharmacokinetics in Pediatric Patients: Drug Metabolism

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 a challenge in...

Pharmacokinetics in Pediatric Patients: Drug Excretion

Pharmacokinetics in Pediatric Patients: Drug Excretion

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...

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption

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...

Pharmacokinetics in Pediatric Patients: Drug Distribution

Pharmacokinetics in Pediatric Patients: Drug Distribution

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, compared...

Drug Dosing: Infants and Children

Drug Dosing: Infants and Children

Pediatric patient dosages diverge from adults due to disparities in body surface area, total body water, and extracellular fluid per kilogram of body weight. The dosing regimen considers the variations in pharmacokinetics and pharmacology across distinct age groups, encompassing preterm newborns, infants, young children, older children, and adolescents. Calculation of pediatric patient doses is predicated on determining body surface area, which exhibits a superior correlation with the child's...

Standard Electrode Potentials

Standard Electrode Potentials

On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...

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Related Experiment Video

Updated: May 26, 2026

Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells

Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells

Published on: May 16, 2019

Pediatric reference intervals for serum copper and zinc.

Chia-Ni Lin¹, Andrew Wilson, Bella B Church

¹Department of Pathology, University of Utah Health Sciences Center, Salt Lake City, 84112, United States.

Clinica Chimica Acta; International Journal of Clinical Chemistry

|December 24, 2011

Summary

This study established crucial reference intervals for serum copper and zinc in healthy American children. These findings provide essential benchmarks for pediatric health and nutritional assessments.

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Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells

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Positron Emission Tomography Using 64-Copper as a Tracer for the Study of Copper-Related Disorders

Positron Emission Tomography Using 64-Copper as a Tracer for the Study of Copper-Related Disorders

Published on: April 28, 2023

Area of Science:

Pediatric Endocrinology
Trace Element Metabolism
Clinical Chemistry

Background:

Copper and zinc are vital trace elements and nutrients essential for numerous physiological processes and metabolic pathways.
Establishing accurate reference intervals is critical for diagnosing and managing conditions related to these elements in children.
Previous research highlighted the need for age- and gender-specific data in pediatric populations.

Purpose of the Study:

To determine age- and gender-specific reference intervals for serum copper and zinc concentrations.
To provide a robust dataset for a large, healthy pediatric cohort in the United States.
To establish reliable benchmarks for clinical interpretation of copper and zinc levels in children.

Main Methods:

Serum samples from 2115 healthy children (0.5-18 years) were analyzed.
Inductively coupled plasma-mass spectrometry was used to measure copper and zinc concentrations.
Statistical analyses were performed using STATA and R software to establish reference intervals.

Main Results:

No significant gender or fasting status effects were observed for either element.
Serum zinc reference interval was determined as 64-124 μg/dl.
Age-dependent reference intervals were established for serum copper, varying by age group (<10.3y, 10.3-12.5y, >12.5y).

Conclusions:

Defined reference intervals for serum copper and zinc in a healthy American pediatric population.
The established intervals serve as a valuable resource for healthcare providers.
This study contributes to improved diagnostic accuracy for trace element status in children.