During the past two decades there has been a dramatic increase in the use of drugs by pregnant women. While the target for drugs administered during pregnancy is the mother, the fetus often becomes an unwanted recipient. Unfortunately, use of drugs during pregnancy can cause structural malformations in the fetus. We propose that many commonly used drugs also can produce more subtle biochemical, physiological and behavioral teratogenic defects in the fetus. The effects of these drug teratogens may not be apparent at birth or even in childhood, but may lie dormant or """"""""latent"""""""" until years later. We propose that many drugs may interfere, in utero, with the normal differentiation of the liver and brain, resulting in permanent defects in drug metabolism, disposition and action in the adult. By administering commonly used drugs (i.e., barbiturates, benzodiazepines, analgesics, etc.) to pregnant and lactating rodents we plan to study in their adult offspring the delayed teratogenic effects of the drugs on in vitro hepatic microsomal drug metabolism and drug receptor levels in the brain and to correlate these biochemical findings with n vivo measures of drug action.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Research Project (R01)
Project #
5R01HD016358-07
Application #
3313648
Study Section
Pharmacology A Study Section (PHRA)
Project Start
1983-09-01
Project End
1992-08-31
Budget Start
1990-09-01
Budget End
1992-08-31
Support Year
7
Fiscal Year
1990
Total Cost
Indirect Cost
Name
University of Pennsylvania
Department
Type
Schools of Veterinary Medicine
DUNS #
042250712
City
Philadelphia
State
PA
Country
United States
Zip Code
19104
Agrawal, Arun K; Shapiro, Bernard H (2005) Neonatal phenobarbital imprints overexpression of cytochromes P450 with associated increase in tumorigenesis and reduced life span. FASEB J 19:470-2
Sharma, Meena R; Periandythevar, Parameswaran; Shapiro, Bernard H (2003) Spurious observation of splenic cyp2b1 expression. Drug Metab Dispos 31:1074-6
Agrawal, Arun K; Shapiro, Bernard H (2003) Constitutive and inducible hepatic cytochrome P450 isoforms in senescent male and female rats and response to low-dose phenobarbital. Drug Metab Dispos 31:612-9
Agrawal, Arun K; Shapiro, Bernard H (2003) Phenobarbital-imprinted overinduction of adult constituent CYP isoforms. Pharmacology 68:204-15
Dhir, Ravindra N; Dworakowski, Wojciech; Shapiro, Bernard H (2002) Middle-age alterations in the sexually dimorphic plasma growth hormone profiles: involvement of growth hormone-releasing factor and effects on cytochrome p450 expression. Drug Metab Dispos 30:141-7
Kaufhold, Antje; Nigam, Prabhat K; Dhir, Ravindra N et al. (2002) Prevention of latently expressed CYP2C11, CYP3A2, and growth hormone defects in neonatally monosodium glutamate-treated male rats by the N-methyl-D-aspartate receptor antagonist dizocilpine maleate. J Pharmacol Exp Ther 302:490-6
Agrawal, A K; Shapiro, B H (2001) Intrinsic signals in the sexually dimorphic circulating growth hormone profiles of the rat. Mol Cell Endocrinol 173:167-81
Garcia, M C; Thangavel, C; Shapiro, B H (2001) Epidermal growth factor regulation of female-dependent CYP2A1 and CYP2C12 in primary rat hepatocyte culture. Drug Metab Dispos 29:111-20
Pampori, N A; Agrawal, A K; Shapiro, B H (2001) Infusion of gender-dependent plasma growth hormone profiles into intact rats: effects of subcutaneous, intraperitoneal, and intravenous routes of rat and human growth hormone on endogenous circulating growth hormone profiles and expression of sexually dim Drug Metab Dispos 29:8-16
Agrawal, A K; Shapiro, B H (2000) Differential expression of gender-dependent hepatic isoforms of cytochrome P-450 by pulse signals in the circulating masculine episodic growth hormone profile of the rat. J Pharmacol Exp Ther 292:228-37

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