Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Minist Water Res, Inst Hydroecol, Wuhan 430079, Peoples R China; Chinese Acad Sci, Wuhan 430079, Peoples R China
WOS标题词:
Science & Technology
; Physical Sciences
类目[WOS]:
Chemistry, Analytical
; Chemistry, Physical
研究领域[WOS]:
Chemistry
摘要:
Power-time curves and metabolic properties of Tetrahymena thermophila BF5 exposed to different Yb3+ stop levels were studied by ampoule method of isothermal calorimetry at 28 degrees C. Metabolic rate (r) decreased significantly while peak time (PT) increased with the increase of Yb3+ stop. 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+ stop on cells and freshwater ecosystem. It was also found that cell membrane fluidity decreased significantly under the effects of Yb3+ stop, which indicated that Yb3+ could be membrane active molecules with its effect on cell membranes as fundamental aspect of its toxicity.
英文摘要:
Power-time curves and metabolic properties of Tetrahymena thermophila BF5 exposed to different Yb3+ stop levels were studied by ampoule method of isothermal calorimetry at 28 degrees C. Metabolic rate (r) decreased significantly while peak time (PT) increased with the increase of Yb3+ stop. 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+ stop on cells and freshwater ecosystem. It was also found that cell membrane fluidity decreased significantly under the effects of Yb3+ stop, which indicated that Yb3+ could be membrane active molecules with its effect on cell membranes as fundamental aspect of its toxicity.
1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Minist Water Res, Inst Hydroecol, Wuhan 430079, Peoples R China 3.Chinese Acad Sci, Wuhan 430079, Peoples R China
Recommended Citation:
Chen, X.-J.; Feng, W.-S; Miao, W.; Shen, Y.-F.; Yu, Y.-H..Effects of ytterbium ion on the growth, metabolism and membrane fluidity of Tetrahymena thermophila,JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2007,89(3):835-839
