Pharmacogenetics and development: are infants and children at increased risk for adverse outcomes?

Abstract:

:Over the past two decades, pharmacokinetic data have clearly demonstrated that development can markedly influence the absorption, distribution, excretion, and metabolism of xenobiotics. With respect to many of the processes that govern drug metabolism, the underlying pharmacogenetic determinants that may control either the affinity or the capacity of a drug or toxicant substrate for the enzymes responsible for its biotransformation appear to be altered as a function of development by mechanisms that are, for the most part, not well defined. Nonetheless, for many xenobiotics, the pharmacogenetic-developmental interface produces a "pattern" for drug metabolism that, when characterized, supports the pharmacokinetic properties (eg, drug clearance) reported for many agents across the pediatric age spectrum. With the exception of a few relatively well-characterized adverse drug effects (eg, toxicity of 6-mercaptopurine in patients with absent thiopurine methyltransferase activity, increased incidence of hepatotoxicity to valproic acid in young infants), the relationship of development and pharmacogenetics to enhanced toxicity risk from xenobiotic exposure is poorly defined. However, failure to adequately appreciate the pharmacokinetic consequences of the pharmacogenetic-developmental interface and to individualize therapy accordingly may lead to a clinically significant risk of drug therapy, namely, over- or underdosing.

journal_name

Curr Opin Pediatr

authors

Kearns GL

subject

Has Abstract

pub_date

1995-04-01 00:00:00

pages

220-33

issue

2

eissn

1040-8703

issn

1531-698X

journal_volume

7

pub_type

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