Determination of Methylarginines in Infant Plasma by CE-LIF.
Determination of Methylarginines in Infant Plasma by CE-LIF.
复制标题
通过 CE-LIF 测定婴儿血浆中的甲基精氨酸。
DOI:
10.1039/c4ay00340c
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Lunte,SusanM
中科院分区:
文献类型:
--
作者:
Linz,ThomasH;Lunte,SusanM
Methylarginines (MAs) are a class of nitric oxide synthase inhibitors that have been implicated in respiratory complications of critically ill infants. This paper describes the development of an analytical method to measure these compounds in the plasma of newborns using capillary electrophoresis (CE). The CE separation method was optimized to enable complete baseline resolution of the four MA analogues of interest. Sample preparation concerns for infant-derived samples were addressed by validating a heat-assisted extraction method for the analysis of low volume (≤100 μL) samples from a plasma matrix. It was determined that the sample matrix (plasma versus serum) did not affect the measured MA concentrations, while extracting smaller volumes of plasma that underwent heat-induced gelation afforded higher MA recoveries than larger volume samples. These methods were then applied to blood samples collected from infants housed in the neonatal intensive care unit. It was discovered that these newborns had significantly elevated concentrations of MAs at younger ages (<6 months) while amounts were similar between infants 6 months old and adults. The data are preliminary, but demonstrate an interesting age dependence on the concentrations of these nitric oxide inhibitors, which has not been previously reported.
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DOI:
10.1083/jcb.84.3.692
发表时间:
1980-03
期刊:
The Journal of cell biology
影响因子:
--
作者:
Johnson MI;Ross CD;Bunge RP
通讯作者:
Bunge RP
影响因子:
5.3
作者:
F. Hefti;H. Gnahn;M. Schwab;H. Thoenen
通讯作者:
H. Thoenen
影响因子:
2.9
作者:
J. Kessler
通讯作者:
J. Kessler
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
影响因子:
2.7
作者:
Landis,SC;Keefe,D
通讯作者:
Keefe,D