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Cadmium bioaccumulation and detoxification in the gill and digestive gland of the Antarctic bivalve Laternula elliptica

Cited 25 time in scopus
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Title
Cadmium bioaccumulation and detoxification in the gill and digestive gland of the Antarctic bivalve Laternula elliptica
Other Titles
남극 큰띠조개 Laternula elliptica 아가미와 소화선에서의 카드뮴 농축과 해독 기작
Authors
Choi, Heeseon J.
Ahn, In-Young
Chung, Kyung Ho
Ji, Jung Youn
Subject
Physics
Keywords
Antarctic; Laternula elliptica; cadmium; metal accumulation; metallothionein-like protein
Issue Date
2007
Citation
Choi, Heeseon J., et al. 2007. "Cadmium bioaccumulation and detoxification in the gill and digestive gland of the Antarctic bivalve Laternula elliptica". COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY, 145(1): 227-235.
Abstract
Exposure to a sublethal concentration of cadmium (Cd;50 mu g L(-1)) resulted in significantly increased Cd concentrations in the gill and digestive gland of the Antarctic bivalve Laternida elliptica. Continuous accumulation of Cd in the two organs during the 14-day exposure period was associated with sequestration of Cd to both the soluble cytosolic and insoluble particulate cell fractions. However, the contribution of each cell fraction to Cd sequestration differed between the two organs,- in the gill, a larger portion of Cd was associated with the insoluble fraction, while in the digestive gland, both the soluble and insoluble fractions sequestered similar amounts of Cd. Metal-binding components in the insoluble cell fraction were not identified in this study. On the other hand, a metallothionein-like protein (MTLP) was the major Cd-detoxifying component in the soluble cell fraction of the gill and digestive gland. The amount of MTLP increased linearly with exposure time and the amount of Cd accumulated in the tissue, which suggests a potential utility of MTLP as a biomarker for exposure to Cd and possibly other metals. (c) 2006 Elsevier Inc. All rights reserved.
URI
http://repository.kopri.re.kr/handle/201206/6228
DOI
http://dx.doi.org/10.1016/j.cbpc.2006.12.005
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