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Studies on the toxic effects of La(3+) to Tetrahymena thermophila by microcalorimetry
Chen Xiaojuan1,2,3; Feng Weisong3; Yu Yuhe3; Wan Chengyan1,2; Peng Jianhua1,2
2008-06-01
Source PublicationBIOLOGICAL TRACE ELEMENT RESEARCH
ISSN0163-4984
Volume123Issue:1-3Pages:242-249
AbstractThe toxic effects of La(3+) on Tetrahymena thermophila have been studied by microcalorimetry at 28 degrees C. The metabolic rate constant (r) and peak time were linked to the concentration of La(3+). The changes of metabolic rate constant indicated that low-concentration La(3+) (0-75 mg/L) had no significant effects on the metabolism of Tetrahymena cells but high-concentration La(3+) (100-175 mg/L) could inhibit their metabolism. From the results obtained by cell counting and fluorescence depolarization measurements, the inhibition of metabolism resulted from the decrease in cell number and the reduction in cell membrane fluidity. According to the results, it is clear that the metabolic mechanism of Tetrahymena cells has been changed with the addition of high-concentration La(3+). In addition, microcalorimetry of Tetrahymena could be a sensible, easy-to-use, and convenient method for monitoring the potential effects of rare earth elements on cells and the freshwater ecosystem.
SubtypeArticle
KeywordLa(3+) Tetrahymena Thermophila Microcalorimetry Thermogenic Curves Inhibition Cell Growth Membrane Fluidity
DOI10.1007/s12011-008-8092-0
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Endocrinology & Metabolism
WOS SubjectBiochemistry & Molecular Biology ; Endocrinology & Metabolism
WOS KeywordMEMBRANE FLUIDITY ; CELLS ; PHOSPHATIDYLCHOLINE ; PYRIFORMIS ; GROWTH ; IONS
WOS IDWOS:000256084000027
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/27366
Collection淡水生态学研究中心
Affiliation1.Minist Water Resources, Inst Hydroecol, Wuhan 430079, Peoples R China
2.Chinese Acad Sci, Inst Hydroecol, Wuhan 430079, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Chen Xiaojuan,Feng Weisong,Yu Yuhe,et al. Studies on the toxic effects of La(3+) to Tetrahymena thermophila by microcalorimetry[J]. BIOLOGICAL TRACE ELEMENT RESEARCH,2008,123(1-3):242-249.
APA Chen Xiaojuan,Feng Weisong,Yu Yuhe,Wan Chengyan,&Peng Jianhua.(2008).Studies on the toxic effects of La(3+) to Tetrahymena thermophila by microcalorimetry.BIOLOGICAL TRACE ELEMENT RESEARCH,123(1-3),242-249.
MLA Chen Xiaojuan,et al."Studies on the toxic effects of La(3+) to Tetrahymena thermophila by microcalorimetry".BIOLOGICAL TRACE ELEMENT RESEARCH 123.1-3(2008):242-249.
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