Cellular metabolism of proxyl nitroxides and hydroxylamines.
Cellular metabolism of proxyl nitroxides and hydroxylamines.
复制标题
代理硝基氧和羟胺的细胞代谢。
DOI:
10.1016/0304-4165(91)90139-8
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
Swartz,H
中科院分区:
文献类型:
--
作者:
Sentjurc,M;Pecar,S;Chen,K;Wu,M;Swartz,H
Previous data from model systems indicated that the proxyl nitroxides should be especially resistant to bioreduction and therefore could be an effective to this often problematic characteristic of nitroxides. Therefore, we investigated the rate of reduction by cells and by the usual model system, ascorbate, of four proxyl nitroxides and three reference nitroxides. We found that, while the rate of reduction by ascorbate of the proxyl nitroxides was slower than the rate of a prototypic pyrrolidine nitroxide (PCA), the reverse was true for reduction by cells. We also studied the rate of oxidation of the corresponding hydroxylamines. The rate of oxidation by cells of the proxyl hydroxylamines was relatively fast, especially for the most lipophilic derivative. These results indicate that: (i) proxyl nitroxides may not be unusually resistant to bioreduction by functional biological systems; (ii) accurate knowledge of relative rates of metabolism of nitroxides and hydroxylamines in cells and tissues will require direct studies in these systems because the rates may not closely parallel those observed in model (chemical) systems; and (iii) proxyl nitroxides show potential value as agents to measure oxygen concentrations by the rates of oxidation of their corresponding hydroxylamines.
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DOI:
10.1016/0167-4889(86)90073-x
发表时间:
1986-08
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
H. Swartz;M. Sentjurc;P. D. Morse
通讯作者:
H. Swartz;M. Sentjurc;P. D. Morse
DOI:
10.1016/0304-4165(89)90033-0
发表时间:
1989
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Iannone,A;Hu,HP;Tomasi,A;Vannini,V;Swartz,HM
通讯作者:
Swartz,HM
影响因子:
6.7
作者:
Gordon,DG;Brasch,RC;Ogan,MD;Deen,D
通讯作者:
Deen,D
DOI:
10.1002/9780470110492.ch5
发表时间:
1983
期刊:
Methods of biochemical analysis
影响因子:
--
作者:
Swartz,HM;Swartz,SM
通讯作者:
Swartz,SM
影响因子:
3.9
作者:
BELKIN, S;MEHLHORN, RJ;PACKER, L
通讯作者:
PACKER, L