Coltart D J, Güllner H G, Billingham M, Goldman R H, Stinson E B, Kalman S M, Harrison D C
Br Med J. 1974 Dec 28;4(5947):733-6. doi: 10.1136/bmj.4.5947.733.
Using the recipient's human heart removed at cardiac transplantation, the distribution of digoxin at both the cellular and subcellular level has been studied. In the presence of diffuse histological myocardial abnormalities tissue digoxin is decreased, but the subcellular distribution, presumably reflecting binding to a possible receptor site, is uniform. When the histological abnormality is focal then digoxin distribution is uniform.These results suggest that in the presence of myocardial ischaemia plasma digoxin concentrations may not reflect total myocardial levels accurately.
利用心脏移植时取出的受者心脏,研究了地高辛在细胞和亚细胞水平的分布情况。在存在弥漫性组织学心肌异常的情况下,组织中的地高辛含量降低,但亚细胞分布(推测反映了与可能的受体部位的结合)是均匀的。当组织学异常为局灶性时,地高辛分布也是均匀的。这些结果表明,在存在心肌缺血的情况下,血浆地高辛浓度可能无法准确反映心肌总水平。