PMID- 23553963 OWN - NLM STAT- MEDLINE DCOM- 20130801 LR - 20181202 IS - 1552-8618 (Electronic) IS - 0730-7268 (Linking) VI - 32 IP - 7 DP - 2013 Jul TI - CYP1A expression in liver and gills of roach (Rutilus rutilus) after waterborne exposure to two phenanthrene derivatives, 1-methylphenanthrene and 4-methylphenanthrene. PG - 1604-10 LID - 10.1002/etc.2225 [doi] AB - Phenanthrenes (Phs) substituted with alkyl groups are a class of compound present in the environment, and they appear to be toxic to developing fish. The present study aimed to investigate the effect of waterborne exposure to two monomethyl derivatives of phenanthrene, 1-methylphenanthrene (1M-Ph) and 4-methylphenanthrene (4M-Ph), on cytochrome P450 1A (CYP1A) gene expression in fish gills and liver. Juvenile common roaches (Rutilus rutilus) were exposed to water with dimethyl sulfoxide (DMSO) solutions of 1M-Ph, 4M-Ph, benzo[a]pyrene (BaP; positive control), each at a dose of 100 microg/L, or to water with DMSO alone (negative control group) for 2 d and 7 d. Significant CYP1A responses with regard to treatment and exposure duration were noted (2-way analysis of variance [ANOVA]) in gills (p = 0.013 and p = 0.003, respectively) and liver (p < 0.001). The 2 monomethyl Phs did not induce consistent gene expression changes, except for 4-MPh, which elevated the CYP1A messenger ribonucleic acid (mRNA) level in the liver at the end of the treatment (almost 4-fold; p < 0.05; 7 d). As was expected, exposure to BaP resulted in elevation of CYP1A mRNA expression in treated fish compared with the control group. Expressions after 2 d and 7 d were approximately 220- and 180-fold higher in liver and 8- and 6-fold higher in gills respectively. The CYP1A protein levels remained stable in both tissues, with one notable exception in roach liver treated for 2 d with BaP ( approximately 6-fold increase; p < 0.05). The different effects of the 1- and 4-methylphenanthrenes on CYP1A gene expression in roach liver suggest a relationship between chemical or 3-D structure of the differentially substituted monomethyl Phs and their biological activity. CI - Copyright (c) 2013 SETAC. FAU - Wolinska, Lidia AU - Wolinska L AD - Department of Environmental Biotechnology, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland. lidia.wolinska@uwm.edu.pl FAU - Brzuzan, Pawel AU - Brzuzan P FAU - Wozny, Maciej AU - Wozny M FAU - Luczynski, Michal K AU - Luczynski MK FAU - Gora, Maciej AU - Gora M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130520 PL - United States TA - Environ Toxicol Chem JT - Environmental toxicology and chemistry JID - 8308958 RN - 0 (Phenanthrenes) RN - 0 (RNA, Messenger) RN - 0 (Water Pollutants, Chemical) RN - 44IY90KLCE (1-methylphenanthrene) RN - EC 1.14.14.1 (Cytochrome P-450 CYP1A1) SB - IM MH - Animals MH - Cyprinidae/genetics/metabolism MH - Cytochrome P-450 CYP1A1/genetics/metabolism MH - Gene Expression/drug effects MH - Gills/drug effects/metabolism MH - Liver/drug effects/metabolism MH - Phenanthrenes/metabolism/*toxicity MH - RNA, Messenger/metabolism MH - Water Pollutants, Chemical/metabolism/*toxicity EDAT- 2013/04/05 06:00 MHDA- 2013/08/02 06:00 CRDT- 2013/04/05 06:00 PHST- 2012/11/05 00:00 [received] PHST- 2012/12/17 00:00 [revised] PHST- 2013/03/13 00:00 [accepted] PHST- 2013/04/05 06:00 [entrez] PHST- 2013/04/05 06:00 [pubmed] PHST- 2013/08/02 06:00 [medline] AID - 10.1002/etc.2225 [doi] PST - ppublish SO - Environ Toxicol Chem. 2013 Jul;32(7):1604-10. doi: 10.1002/etc.2225. Epub 2013 May 20.