Journal article

Recent Developments in Understanding Barrier Mechanisms in the Developing Brain: Drugs and Drug Transporters in Pregnancy, Susceptibility or Protection in the Fetal Brain?

Norman R Saunders, Katarzyna M Dziegielewska, Kjeld Mollgard, Mark D Habgood, PA Insel (ed.)

ANNUAL REVIEW OF PHARMACOLOGY AND TOXICOLOGY, VOL 59 | ANNUAL REVIEWS | Published : 2019

Abstract

Efflux mechanisms situated in various brain barrier interfaces control drug entry into the adult brain; this review considers the effectiveness of these protective mechanisms in the embryo, fetus, and newborn brain. The longstanding belief that the blood-brain barrier is absent or immature in the fetus and newborn has led to many misleading statements with potential clinical implications. The immature brain is undoubtedly more vulnerable to damage by drugs and toxins; as is reviewed here, some developmentally regulated normal brain barrier mechanisms probably contribute to this vulnerability. We propose that the functional status of brain barrier efflux mechanisms should be investigated at d..

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