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Title

Exposure to TBT increases accumulation of lipids and alters fatty acid homeostasis in the ramshorn snail Marisa cornuarietis

AuthorsJaner, Gemma; Navarro, Juan Carlos ; Porte Visa, Cinta
KeywordsFatty acids
Lipogenesis
Methyl-testosterone
RXR
Tributyltin
Issue Date4-May-2007
PublisherElsevier
CitationComparative Biochemistry and Physiology, Part C: Toxicology an Pharmacology 146(3): 368-374 (2007)
AbstractRecent studies have shown that organotin compounds affect lipid homeostasis in vertebrates, probably through interaction with RXR and/or PPARγ receptors. Molluscs are sensitive species to the toxic effects of tributyltin (TBT), particularly to masculinization, and TBT has been recently shown to bind to molluscs RXR. Thus, we hypothesized that exposure to TBT could affect lipid homeostasis in the ramshorn snail Marisa cornuarietis. For comparative purposes, the synthetic androgen methyl-testosterone (MT) was included in the study due to its masculinization effects, but its lack of binding to the RXR receptor. M. cornuarietis was exposed to different concentrations of TBT (30, 125, 500 ng/L as Sn) and MT (30, 300 ng/L) for 100 days. Females exposed to 500 ng/LTBT showed increased percentage of lipids and increased levels of fatty acids in the digestive gland/gonad complex (2- to 3-fold). In addition, fatty acid profiles were altered in both males and females exposed to 125 and 500 ng/L TBT. These effects were not observed in females exposed to MT. Overall, this work suggest that TBT acts as a potent inducer of lipid and fatty acid accumulation in M. cornuarietis as shown in vertebrate studies earlier, and that sex differences in sensitivity do exist.
Description7 pages, 3 tables, 2 figures.-- PMID: 17544855 [PubMed].-- Printed version published Sep 2007.
Publisher version (URL)http://dx.doi.org/10.1016/j.cbpc.2007.04.009
URIhttp://hdl.handle.net/10261/11122
DOI10.1016/j.cbpc.2007.04.009
ISSN1532-0456
Appears in Collections:(IATS) Artículos
(IDAEA) Artículos
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