NDLI: Development and maturation in the nereidid polychaetes Platynereis dumerilii and Nereis succinea exposed to xenoestrogens.

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Development and maturation in the nereidid polychaetes Platynereis dumerilii and Nereis succinea exposed to xenoestrogens.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	García-Alonso, J. Ayoola, J. A. O. Crompton, J. Rebscher, N. Hardege, J. D.
Description	Country affiliation: United kingdom Author Affiliation: García-Alonso J ( Department of Zoology, The Natural History Museum, SW75BD, London, England, United Kingdom. jgalonso@fcien.edu.uy)
Abstract	Few studies link biochemical, cellular and whole animal effects of toxic compounds with growth and reproductive output on invertebrate model organisms. Thus, we explore the effects of xenoestrogens on nereid worms. Larvae of Platynereis dumerilii exposed to estradiol (E(2)) ethynylestradiol (EE(2)) and nonyplhenol (NP) observing the effects on growth, primordial germ cell (PGC) proliferation and maturation. In addition, a single exposure study was performed with a 50 days latency period on adult worms of Nereis succinea. Since reduced glutathione (GSH) is required in detoxification of NP and is the precursor of the spawning pheromone nereithione (CSSG) in N. succinea, we analysed how the estrogenic chemical NP affects GSH concentrations. PGC were not affected by exposure to E(2) and EE(2) from 24hpf to 6 days. Chronic exposure of P. dumerilii with NP over the full life cycle did not influence segment proliferation. Mature females that developed, even at high concentrations, were able to spawn and successful fertilization occurred. However, at high NP levels no P. dumerilii males matured. A significant decline of GSH can be seen in N. succinea males upon treatment with NP, but not in females, indicating that females stabilize GSH levels even in stress situations. This study shows some results that link the foundation to causally integrate toxic exposure to xenoestrogens with development, growth and reproductive outputs in nereidid polychaetes.
File Format	HTM / HTML
ISSN	15320456
Issue Number	3
Volume Number	154
Journal	Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology
Language	English
Publisher	Elsevier
Publisher Date	2011-09-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Toxicology Discipline Pharmacology Estrogens Toxicity Polychaeta Drug Effects Growth & Development Xenobiotics Animals Cell Proliferation Cysteine Analogs & Derivatives Metabolism Dose-response Relationship, Drug Environmental Exposure Estradiol Ethinyl Estradiol Female Germ Cells Glutathione Inactivation, Metabolic Larva Male Phenols Reproduction Sex Ratio Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Cell Biology Physiology Health, Toxicology and Mutagenesis Medicine Aquatic Science Biochemistry Toxicology Animal Science and Zoology

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Development and maturation in the nereidid polychaetes Platynereis dumerilii and Nereis succinea exposed to xenoestrogens.

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