PMID: 8598832Feb 29, 1996Paper

Development of an in vivo genotoxicity assay using the marine worm Platynereis dumerilii (Polychaeta: Nereidae)

Mutation Research
A N JhaD R Dixon

Abstract

An in vivo genotoxicity test system has been developed using the embryo-larval stages of the marine annelid, Platynereis dumerilii (Polychaeta: Nereidae). This species is representative of an ecologically important group of marine invertebrates, it is amenable to laboratory culture and has a well defined and stable karyotype (2n=28) which is suitable for the analysis of a range of cytogenetic endpoints, including chromosomal aberrations (CAs) and sister chromatid exchanges (SCEs). An evaluation of the cell cycle kinetics using the embryo-larval stages allowed selection of exposure times for cytogenetic work. Subsequently, 12-h-old embryos were exposed to reference mutagens, dissolved in sea water, in the presence of 5-bromodeoxyuridine (BrdU) for 12 h (SCE analysis) or 8 h (CA analysis) at 15 +/- 1 degree C, by which time they had reached the first larval stage (20-24h). Dose response-relationships for cytotoxicity, SCEs and CAs were observed for both direct acting mutagens (methyl methanesulfonate, mitomycin C) and mutagens which require metabolic activation (cyclophosphamide, benzo[a]pyrene). The sensitivity of the embryo-larval stages of P. dumerilii to both direct and indirect acting mutagens, their suitability for laborato...Continue Reading

Citations

Jan 1, 2009·Genetics and Molecular Biology·Cesar K GrisoliaJose G Dorea
Aug 30, 2011·Marine Environmental Research·Ceri Lewis, Gordon J Watson
Oct 28, 2015·Environmental Science & Technology·Mengting YangSusan D Richardson
Jan 5, 2012·Radiation Research·Lorna J DallasAwadhesh N Jha
Apr 10, 2014·PloS One·Benjamin BackfischFlorian Raible
Sep 9, 2004·Mutation Research·Awadhesh N Jha
Jun 22, 2000·Environmental and Molecular Mutagenesis·A N JhaS J Hill

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