Respiratory alkalosis does not alter NOx concentrations in human plasma and erythrocytes.

Respiratory alkalosis does not alter NOx concentrations in human plasma and erythrocytes.
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呼吸性碱中毒不会改变人血浆和红细胞中的氮氧化物浓度。

DOI:
10.1152/ajpheart.2001.281.6.h2757
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发表时间:
2001
期刊:
American journal of physiology. Heart and circulatory physiology
影响因子:
--
通讯作者:
M. Nishio
M. Nishio
中科院分区:
--
文献类型:
--
作者:
T. Ishibashi;K. Kubota;M. Himeno;T. Matsubara;T. Hori;K. Ozaki;M. Yamozoe;Y. Aizawa;J. Yoshida;M. Nishio

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为了检验 NOx(NO 和 NO,NO 的代谢物)响应血液中 PCO(2) 和碳酸氢盐 (HCO) 浓度变化而在红细胞 (RBC) 中积累的假设,我们研究了健康成人过度换气引起的 PCO(2) 和 HCO 变化对全血中 NOx 分配的影响。采用配备 C(18) 反相柱捕获血红蛋白的高效液相色谱-Griess 系统测量溶血液中的 NOx,可实现全血 NOx 浓度的测定和红细胞中 NOx 浓度的计算,具有高精度和重复性。红细胞中NOx浓度低于血浆中NOx浓度,添加NO后血浆和红细胞迅速达到平衡。过度通气引起的 PCO(2) 和 HCO 变化未能影响血浆和红细胞中的 NOx 浓度。血浆 NOx 浓度与全血 NOx 和红细胞 NOx 浓度相关。我们的结果表明,过度通气引起的 PCO(2) 或 HCO 的变化不会影响血浆和红细胞中的 NOx 区室化。
To test the hypothesis that NOx (NO and NO, metabolites of NO) accumulates in red blood cells (RBC) in response to changes in PCO(2) and bicarbonate (HCO) concentration in blood, we examined the effect of changes in PCO(2) and HCO induced by hyperventilation in healthy adults on partitioning of NOx in whole blood. NOx in hemolysate was measured by a high-performance liquid chromatography-Griess system equipped with a C(18) reverse phase column to trap hemoglobin, which enables determination of whole blood NOx concentration and calculation of NOx concentration in RBC with high accuracy and reproducibility. NOx concentration in RBC was lower than that in plasma, and equilibrium between plasma and RBC was achieved rapidly after addition of NO. Changes in PCO(2) and HCO by hyperventilation failed to influence NOx concentrations in both plasma and RBC. Plasma NOx concentrations correlated with whole blood NOx and RBC NOx concentrations. Our results indicate that changes in PCO(2) or HCO induced by hyperventilation do not influence NOx compartmentalization in plasma and RBC.
NO 代谢物在红细胞中的积累与二氧化碳和碳酸氢盐浓度成比例。
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