Hemodialysis and red cell cation transport in uremia: role of membrane free fatty acids.

Hemodialysis and red cell cation transport in uremia: role of membrane free fatty acids.
复制标题

尿毒症中的血液透析和红细胞阳离子转运:膜游离脂肪酸的作用。

DOI:
10.1038/ki.1989.28
复制
发表时间:
1989
影响因子:
19.6
通讯作者:
Mitch,WE
Mitch,WE
中科院分区:
医学1区
文献类型:
--
作者:
Kelly,RA;Canessa,ML;Steinman,TI;Mitch,WE

文献摘要

参考文献

被引文献

相似文献

尿毒症中的血液透析和红细胞阳离子转运:膜游离脂肪酸的作用。尿毒症患者红细胞中主动且促进的阳离子转运可能通过血液透析得到显着改善,尽管其机制仍不清楚。由于非酯化脂肪酸 (NEFA) 可以影响体外 Na+泵活性,因此检查了单次血液透析程序后血浆和红细胞膜 NEFA 含量的变化,并与 34 名血液透析患者的红细胞阳离子通量率的急性变化进行比较。在非钠负载细胞中,透析引起的 Na+ 泵通量的微小变化确实与细胞内 Na+ 含量的变化相关(r = 0.59;N = 17;P < 0.01)。平均而言,透析后最大Na+泵活性和Na+/Li+反向转运通量均未改善,但Na+/K+/Cl-共转运率在透析后上升了25%(P < 0.02)。血液透析后血浆 NEFA 水平上升 87%,但红细胞膜 NEFA 含量下降 23% (P < 0.001)。重要的是,所研究的 34 名受试者中有 24 名的红细胞膜 NEFA 含量下降超过 10%,并且在这些患者中,膜 NEFA 的下降与哇巴因敏感性 Na + 流出的增加相关(r = 0.564;P < 0.01)。血液透析对红细胞 NEFA 含量和 Na+泵通量的影响可以通过在无脂肪酸白蛋白中孵育预透析细胞来重现。我们得出结论,膜 NEFA 的急剧变化可能调节尿毒症红细胞中的主动阳离子转运。
Hemodialysis and red cell cation transport in uremia: Role of membrane free fatty acids. Active and facilitated cation transport in erythrocytes of uremic patients may be improved acutely by hemodialysis, although the mechanisms remain unknown. As nonesterified fatty acids (NEFA) can affect Na+pump activity in vitro, changes in plasma and red cell membrane NEFA content following a single hemodialysis procedure were examined and compared with acute changes in erythrocyte cation flux rates in 34 hemodialysis patients. In nonsodium-loaded cells, small changes in Na+pump flux with dialysis did correlate with changes in intracellular Na+content (r = 0.59; N = 17; P < 0.01). On average, neither maximal Na+pump activity nor Na+/Li+counter-transport flux improved with dialysis, but Na+/K+/Cl-cotransport rates rose 25% post-dialysis (P < 0.02). Plasma NEFA levels rose 87% following hemodialysis but erythrocyte membrane NEFA content declined by 23% (P < 0.001). Importantly, 24 of the 34 subjects studied had a decrease in erythrocyte membrane NEFA content of greater than 10%, and in these patients, the fall in membrane NEFA correlated with an increase in ouabain-sensitive Na+efflux (r = 0.564; P < 0.01). The effects of hemodialysis on both erythrocyte NEFA content and Na+pump flux could be reproduced by incubating pre-dialysis cells in fatty acid-free albumin. We conclude that acute changes in membrane NEFA may modulate active cation transport in uremic erythrocytes.
尿毒症血浆诱导哇巴因敏感的 ATP 酶缺陷。
DOI: --
发表时间: 1968
期刊: Transactions of the Association of American Physicians
影响因子: --
作者:
C. Cole;J. Balfe;L. Welt
通讯作者: L. Welt
DOI: --
发表时间: 1978
期刊: Journal of Physiology
影响因子: --
作者:
M. Claret;R. Garay;F. Giraud
通讯作者: F. Giraud
LH-RH 抗血清可阻断雌性大鼠中氟哌啶醇诱导的高催乳素血症。
DOI: --
发表时间: 1985
期刊: Neuroendocrinology
影响因子: 4.1
作者:
L. Debeljuk;I. Torres;A. Schally
通讯作者: A. Schally
尿毒症血液透析患者的红细胞膜流动性降低。
DOI: --
发表时间: 1985
期刊: Nephron
影响因子: 2.5
作者:
K. Komidori;T. Kamada;T. Yamashita;R. Harada;Y. Otsuji;S. Hashimoto;Y. Chūman;S. Otsuji
通讯作者: S. Otsuji
尿毒症中的细胞钠、钾和水以及定期透析对白细胞的影响。
DOI: --
发表时间: 1974
期刊: Clinical science and molecular medicine
影响因子: --
作者:
J. Patrick;N. Jones
通讯作者: N. Jones