Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 89: Issue 3
Effects of ytterbium ion on the growth, metabolism and membrane fluidity of Tetrahymena thermophila
Authors:
X. Chen

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W. Feng Chinese Academy of Sciences Institute of Hydrobiology Wuhan 430072 P. R. China

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W. Miao Chinese Academy of Sciences Institute of Hydrobiology Wuhan 430072 P. R. China

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Y. Shen Chinese Academy of Sciences Institute of Hydrobiology Wuhan 430072 P. R. China

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Y. Yu Chinese Academy of Sciences Institute of Hydrobiology Wuhan 430072 P. R. China

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Pages:
835–839
Online Publication Date:
04 Sep 2007
Publication Date:
01 Sep 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8510-0
Keywords:
cell growth; isothermal calorimetry; membrane fluidity; metabolism; Tetrahymena thermophila BF5; Yb3+
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Abstract  

Power-time curves and metabolic properties of Tetrahymena thermophila BF5 exposed to different Yb3+ levels were studied by ampoule method of isothermal calorimetry at 28°C. Metabolic rate (r) decreased significantly while peak time (PT) increased with the increase of Yb3+. These results were mainly due to the inhibition of cell growth, which corresponded to the decrease of cell number obtained by cell counting. Compared with cell counting, calorimetry was sensible, easy to use and convenient for monitoring the toxic effects of Yb3+ on cells and freshwater ecosystem. It was also found that cell membrane fluidity decreased significantly under the effects of Yb3+, which indicated that Yb3+ could be membrane active molecules with its effect on cell membranes as fundamental aspect of its toxicity.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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