A practical guide to the preparation and use of metal ion‐buffered systems for physiological research
A practical guide to the preparation and use of metal ion‐buffered systems for physiological research
复制标题
用于生理研究的金属离子缓冲系统的制备和使用实用指南
DOI:
10.1111/apha.12988
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发表时间:
2018
影响因子:
6.3
通讯作者:
Schneider T
中科院分区:
文献类型:
--
作者:
Neumaier F;Alpdogan S;Hescheler J;Schneider T
Recent recognition that mobile pools of Zn2+and Cu2+are involved in the regulation of neuronal, endocrine and other cells has stimulated the development of tools to visualize and quantify the level of free trace metal ions. Most of the methods used to measure or control loosely bound metals require reference media that contain exactly defined free concentrations of the target ions. Despite the central importance of proper metal ion buffering, there is still a lack of international standards and beginners in the field may have difficulties finding a coherent description of how to prepare trace metal ion buffers, especially when experiments are to be performed in multimetal systems. To close this gap, we provide a guide for the design, preparation and use of metal ion‐buffered systems that facilitate immediate application under physiologically relevant ionic conditions. Thermodynamic and kinetic concepts of chemical speciation as well as general protocols and specific examples are outlined for the accurate preparation of single‐ and dual‐metal ion buffers. In addition, experiments have been performed with FluoZin‐3 to illustrate that metal ion‐buffered systems are required for reliable preparation of nanomolar Zn2+solutions and that dual‐metal ion buffers can be used to calibrate suitable fluorescent Zn2+sensors in the presence of millimolar Ca2+concentrations. Together, the information provided should sensitize readers to the many potential pitfalls and uncertainties that exist when working with physiologically relevant concentrations of trace metal ions and enable them to formulate their own metal ion buffers for most in vitro applications.
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影响因子:
--
作者:
O. M. El‐Roudi;S. A. Abdel‐Latif
通讯作者:
S. A. Abdel‐Latif
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
P. M. May;K. Murray
通讯作者:
K. Murray
DOI:
--
发表时间:
1968
期刊:
影响因子:
--
作者:
J. R. Kuempel;W. Schaap
通讯作者:
W. Schaap
影响因子:
3.6
作者:
J. Vanbriesen;B. Rittmann
通讯作者:
B. Rittmann
DOI:
--
发表时间:
1973
期刊:
Experientia
影响因子:
--
作者:
H. Wolf
通讯作者:
H. Wolf