Dai J, Liu JJ, Zhou GQ, Zhang YZ, Liu Y. Effect of Ce(III) on heat production of mitochondria isolated from hybrid rice.
Biol Trace Elem Res 2011;
143:1142-8. [PMID:
21104337 DOI:
10.1007/s12011-010-8902-z]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Accepted: 11/09/2010] [Indexed: 11/30/2022]
Abstract
The effect of cerium on mitochondria isolated from hybrid rice Shanyou 63 (Oryza sativa L) was investigated. Through in vivo culture, low dose Ce3+ promoted, but higher dose Ce3+, restrained mitochondrial heat production. However, through vitro incubation, Ce3+ showed only inhibitory action on mitochondrial energy turnover, the concentration required for 50% inhibition being 46.7 μM. In addition, Ce3+, like Ca2+, induced rice mitochondrial swelling and decreased membrane potential (△ψ), which was inhibited by the specific permeability transition inhibitor cyclosporine A (CsA). The induction approached a constant level while mitochondrial metabolism was fully prevented by Ce3+. These results demonstrated that cerium influenced rice mitochondria in vivo and in vitro via different action pathways, and the latter involved the opening of rice mitochondrial permeability.
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