PMID- 18983581 OWN - NLM STAT- MEDLINE DCOM- 20090121 LR - 20151119 IS - 0914-3505 (Print) IS - 0914-3505 (Linking) VI - 48 IP - 4 DP - 2008 Dec TI - Effects of in utero exposure to 2,2',4,4',5,5'-hexachlorobiphenyl (PCB 153) on somatic growth and endocrine status in rat offspring. PG - 151-7 LID - 10.1111/j.1741-4520.2008.00199.x [doi] AB - Exposure to polychlorobiphenyl (PCB) mixtures at an early stage of development has been reported to affect endocrine glands; however, little is known about the precise toxicological properties of individual PCB. The present study was undertaken to determine whether prenatal exposure to 2,2',4,4',5,5'-hexachlorobiphenyl (PCB 153), a di-ortho-substituted non-coplanar congener, affects postnatal development in rat offspring. Pregnant Sprague-Dawley rats (Crj: CD (SD) IGS) were given PCB 153 (0, 16, or 64 mg/kg/day) orally from gestational day (GD) 10 through GD 16, and developmental parameters in the male and female offspring were examined. We found no dose-dependent changes in body weight, body length (nose-anus length), tail length, or the weights of kidneys, testes, ovaries and uterus in offspring at 1 or 3 weeks of age. Liver weights were increased in the PCB 153-treated groups, although we observed a significant difference only in males. Anogenital distance was unaffected in the PCB 153-treated groups. We observed a significant dose-dependent decrease in the plasma concentrations of thyroxine and tri-iodothyronine, whereas those of thyroid-stimulating hormone were not significantly changed. In addition, there were no dose-dependent changes in plasma concentrations of growth hormone and insulin-like growth factor-I in any dose group. These findings suggest that prenatal exposure to PCB 153 (GD 10-16, 16-64 mg/kg/day) may alter the thyroid status in rat offspring to some extent without affecting somatic growth or its related hormonal parameters. FAU - Kobayashi, Kenichi AU - Kobayashi K AD - National Institute of Occupational Safety and Health, Kawasaki, Japan. kobayasi@h.jniosh.go.jp FAU - Miyagawa, Muneyuki AU - Miyagawa M FAU - Wang, Rui-Sheng AU - Wang RS FAU - Suda, Megumi AU - Suda M FAU - Sekiguchi, Soichiro AU - Sekiguchi S FAU - Honma, Takeshi AU - Honma T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Australia TA - Congenit Anom (Kyoto) JT - Congenital anomalies JID - 9306292 RN - 06LU7C9H1V (Triiodothyronine) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - 9002-71-5 (Thyrotropin) RN - 9002-72-6 (Growth Hormone) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - Q51BO43MG4 (Thyroxine) RN - ZRU0C9E32O (2,4,5,2',4',5'-hexachlorobiphenyl) SB - IM MH - Animals MH - Animals, Newborn MH - Female MH - Growth Hormone/blood/drug effects MH - Insulin-Like Growth Factor I/drug effects/metabolism MH - Male MH - Organ Size/*drug effects MH - Polychlorinated Biphenyls/*toxicity MH - Pregnancy MH - *Prenatal Exposure Delayed Effects/physiopathology MH - Rats MH - Rats, Sprague-Dawley MH - Thyrotropin/blood/drug effects MH - Thyroxine/blood/drug effects MH - Triiodothyronine/blood/drug effects EDAT- 2008/11/06 09:00 MHDA- 2009/01/22 09:00 CRDT- 2008/11/06 09:00 PHST- 2008/11/06 09:00 [pubmed] PHST- 2009/01/22 09:00 [medline] PHST- 2008/11/06 09:00 [entrez] AID - CGA199 [pii] AID - 10.1111/j.1741-4520.2008.00199.x [doi] PST - ppublish SO - Congenit Anom (Kyoto). 2008 Dec;48(4):151-7. doi: 10.1111/j.1741-4520.2008.00199.x.