PMID- 10856895 OWN - NLM STAT- MEDLINE DCOM- 20000817 LR - 20190709 IS - 0022-0795 (Print) IS - 0022-0795 (Linking) VI - 166 IP - 1 DP - 2000 Jul TI - Diazepam-binding inhibitor/acyl-CoA-binding protein mRNA and peripheral benzodiazepine receptor mRNA in endocrine and immune tissues after prenatal diazepam exposure of male and female rats. PG - 163-71 AB - Peripheral benzodiazepine (BDZ) receptor (PBR) and diazepam-binding inhibitor/acyl-CoA-binding protein (DBI/ACBP) characterized as a ligand at central BDZ receptors, at PBR with involvement in the regulation of steroidogenesis, and as an intracellular acyl-CoA transporter, are both known to interact with BDZ in adult systems. We investigated their expression after prenatal exposure to BDZ. Diazepam (1.25 mg/kg per day s.c.) was administered to time-pregnant Long Evans rats from gestational day (GD) 14 to 20. Expression of mRNAs encoding for PBR and for DBI/ACBP was studied in the same animals with (33)P-labeled 60 mer oligonucleotides (oligos) by in situ hybridization at GD20, and with (32)P-labeled oligos by Northern blot in steroidogenic and immune organs at postnatal day (PN) 14 and in adult offspring. Prenatal diazepam increased DBI/ACBP mRNA expression in male fetal adrenal and in fetal and PN14 testis. Thymus exhibited increased DBI/ACBP mRNA in male fetuses and in adult female offspring, and reduced organ weight at PN14 in both sexes. In female spleen, an increase in DBI/ACBP mRNA and a decrease in PBR mRNA was seen at PN14. Apart from the finding in spleen, no drug-induced changes in PBR mRNA were observed. The effects of prenatal diazepam were superimposed on treatment-independent sex differences in DBI/ACBP mRNA and PBR mRNA expression. Our data indicate that expression of DBI/ACBP mRNA in steroidogenic and immune organs can be affected by exposure to BDZ during ontogeny, while PBR mRNA expression appears to be less sensitive. They further reveal marked sex differences in the developmental patterns of the two proteins during pre- and postpubertal ontogeny. FAU - Burgi, B AU - Burgi B AD - Institute of Pharmacology and Toxicology, University of Zurich, CH-8057 Zurich, Switzerland. FAU - Lichtensteiger, W AU - Lichtensteiger W FAU - Schlumpf, M AU - Schlumpf M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Endocrinol JT - The Journal of endocrinology JID - 0375363 RN - 0 (Carrier Proteins) RN - 0 (Diazepam Binding Inhibitor) RN - 0 (Hypnotics and Sedatives) RN - 0 (RNA, Messenger) RN - 0 (Receptors, GABA-A) RN - Q3JTX2Q7TU (Diazepam) SB - IM MH - Adrenal Glands/embryology/metabolism MH - Animals MH - Animals, Newborn MH - Blotting, Northern MH - Carrier Proteins/*genetics MH - Diazepam/*toxicity MH - Diazepam Binding Inhibitor MH - Female MH - Hypnotics and Sedatives/*toxicity MH - In Situ Hybridization MH - Male MH - Organ Size/drug effects MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - RNA, Messenger/*analysis MH - Rats MH - Rats, Long-Evans MH - Receptors, GABA-A/*genetics MH - Spleen/metabolism MH - Testis/embryology/metabolism MH - Thymus Gland/embryology/metabolism EDAT- 2000/06/17 09:00 MHDA- 2000/08/19 11:00 CRDT- 2000/06/17 09:00 PHST- 2000/06/17 09:00 [pubmed] PHST- 2000/08/19 11:00 [medline] PHST- 2000/06/17 09:00 [entrez] AID - JOE03613 [pii] AID - 10.1677/joe.0.1660163 [doi] PST - ppublish SO - J Endocrinol. 2000 Jul;166(1):163-71. doi: 10.1677/joe.0.1660163.