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KMID : 0893320090240040341
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Journal of Environmental Toxicology
2009 Volume.24 No. 4 p.341 ~ p.350
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Histological Response of Digestive Gland of Gomphina veneriformis with TBTCl Accumulation in Sediment and Soft Tissue
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Park Jung-Jun
Park Jeong-Chae
Kim Seong-Soo
Cho Hyeon-Seo
Lee Yeon-Gyu
Lee Jung-Sick
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Abstract
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This study involves a relationship between butyltins concentrations and histopathological changes of the digestive gland in the equilateral venus, Gomphina veneriformis exposed to TBTCl of 0.4, 0.6 and 0.8 μg/L for 36 weeks. In the sediment, total butyltin (≫BT) concentration was detected ND~7.54 (0.4 μg/L), ND~9.76 (0.6 μg/L), 1.22~13.13 μg/L (0.8 μg/L), respectively. Especially, TBT level in 0.8 μg/L group was the highest for 36 weeks. In the soft tissue, total butyltin (≫BT) concentration of the exposure group was 10.14~12.75 (control), 479.29~1,286.56 (0.4 μg/L), 563.32~2,154.82 (0.6 μg/L) and 1,317.70~2,132.60 μg/L (0.8 μg/L), respectively. Ratio of TBT to ≫BT of the tissue of 0.8 μg/L kept the lowest level for 36 weeks. The ≫BT concentrations of sediment were correlated with ≫BT concentrations in the tissue. In the exposure groups, necrosis and atrophy of columnar epithelial cell and collapse of epithelial layer in the digestive tubule. And there was a reduction in stain affinity of basophilic cell. Such histological degenerations was more severe in digestive tubule of 0.8 μg/L group.
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KEYWORD
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TBTC, Gomphina veneriformis, accumulation, digestive gland
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