TCDD Elimination Half-Life in Children
Author Information
Author(s): Brent D. Kerger, Hon-Wing Leung, Paul Scott, Dennis J. Paustenbach, Larry L. Needham, Donald G. Patterson Jr., Pier M. Gerthoux, Paolo Mocarelli
Primary Institution: Health Science Resource Integration, Tallahassee, Florida, USA
Hypothesis
How do age and concentration affect the elimination half-life of TCDD in children and adolescents?
Conclusion
Children and adolescents have shorter TCDD half-lives than adults, especially at higher body burdens.
Supporting Evidence
- TCDD half-life in persons < 18 years averaged 1.6 years.
- Half-life is strongly associated with age, increasing by 0.12 years per year.
- Shorter half-lives were observed for TCDD concentrations > 400 ppt in children < 12 years.
Takeaway
Kids get rid of a harmful chemical called TCDD from their bodies faster than adults do, especially if they have more of it in their bodies.
Methodology
Blood concentrations were used to calculate TCDD elimination half-life, examining variables like age, sex, and TCDD concentration.
Potential Biases
Potential bias due to the exclusion of outlier data points and the small number of subjects in certain demographic groups.
Limitations
The study had limited data for very young children and clinically obese individuals, which may affect the generalizability of the findings.
Participant Demographics
Participants were residents of Seveso, Italy, exposed to TCDD during a reactor explosion, aged < 18 years at the time of exposure.
Statistical Information
P-Value
p<0.05
Confidence Interval
0.10–0.14
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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