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Significance of trough monitoring for tacrolimus blood concentration and calcineurin activity in adult patients undergoing primary living-donor liver transplantation

他克莫司 钙调神经磷酸酶 医学 外周血单个核细胞 移植 临床意义 药代动力学 肝移植 治疗药物监测 槽水位 槽浓度 药理学 血液浓度 内科学 化学 体外 生物化学
作者
Ikuko Yano,Satohiro Masuda,Hiroto Egawa,Mitsuhiro Sugimoto,Masahide Fukudo,Yasuhiko Yoshida,Sachiyo Hashi,Atsushi Yoshizawa,Yasuhiro Ogura,Kohei Ogawa,Akira Mori,Toshimi Kaido,Shinji Üemoto,Ken Ichi Inui
出处
期刊:European Journal of Clinical Pharmacology [Springer Science+Business Media]
卷期号:68 (3): 259-266 被引量:18
标识
DOI:10.1007/s00228-011-1129-x
摘要

Tacrolimus pharmacokinetics and calcineurin activity in peripheral blood mononuclear cells (PBMCs) were investigated in adult patients undergoing primary living-donor liver transplantation (LDLT) in order to clarify the significance of monitoring the tacrolimus blood trough concentration during the early post-transplantation period. Fourteen patients were enrolled in this study, and time-course data following the oral administration of a conventional tacrolimus formulation twice daily were obtained at 1 and 3 weeks post-transplantation. The concentration of tacrolimus in whole blood and calcineurin activity in PBMCs were measured. The apparent clearance of tacrolimus significantly increased at 3 weeks versus 1 week post-transplantation, although the trough concentration did not significantly differ at these time points. The concentration at each sampling time, except at 1 h post-dose, correlated well with the area under the concentration–time curve from 0 to 12 h (AUC0–12). Neither the concentration at the trough time point nor AUC0–12 was correlated with the area under the calcineurin activity–time curve from 0 to 12 h; however, calcineurin activity at the trough time point was strongly correlated with the latter (r 2 > 0.92). Based on these results, trough concentration monitoring can be considered an appropriate procedure for routine tacrolimus dosage adjustment in adult LDLT patients. Monitoring of calcineurin activity at the trough time point was also found to be potentially useful for predicting the immunological status of the patient during the tacrolimus dosing interval.
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