期刊论文详细信息
Journal of Translational Medicine
Calcineurin inhibitors differentially alter the circadian rhythm of T-cell functionality in transplant recipients
Urban Sester2  Martina Sester4  Danilo Fliser2  Hashim Abdul-Khaliq1  Stephan Thijssen3  Kai van Bentum4  Karin Budich4  Sarah Leyking4 
[1]Department of Paediatric Cardiology, Saarland University, Homburg, Germany
[2]Department of Internal Medicine IV, Saarland University, Homburg, Germany
[3]Current affiliation: Renal Research Institute, New York, USA
[4]Department of Transplant and Infection Immunology, Saarland University, Homburg, D-66421, Germany
关键词: Pharmacodynamics;    Pharmacokinetics;    Immunosuppression;    Cyclosporine A;    Tacrolimus;    Calcineurin inhibitor;    Kidney transplantation;    Whole blood assay;    Flow-cytometry;    T-cell reactivity;    Circadian rhythm;   
Others  :  1137570
DOI  :  10.1186/s12967-015-0420-5
 received in 2014-08-27, accepted in 2015-01-27,  发布年份 2015
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【 摘 要 】

Background

Graft survival in transplant recipients depends on pharmacokinetics and on individual susceptibility towards immunosuppressive drugs. Nevertheless, pharmacodynamic changes in T-cell functionality in response to drugs and in relation to pharmacokinetics are poorly characterized. We therefore investigated the immunosuppressive effect of calcineurin inhibitors and steroids on general T-cell functionality after polyclonal stimulation of whole blood samples.

Methods

General T-cell functionality in the absence or presence of immunosuppressive drugs was determined in vitro directly from whole blood based on cytokine induction after stimulation with the polyclonal stimulus Staphylococcus aureus enterotoxin B. In addition, diurnal changes in leukocyte and lymphocyte subsets, and on T-cell function after intake of immunosuppressive drugs were analyzed in 19 patients during one day and compared to respective kinetics in six immunocompetent controls. Statistical analysis was performed using non-parametric and parametric tests.

Results

Susceptibility towards calcineurin inhibitors showed interindividual differences. When combined with steroids, tacrolimus led to more pronounced increase in the inhibitory activity as compared to cyclosporine A. While circadian alterations in leukocyte subpopulations and T-cell function in controls were related to endogenous cortisol levels, T-cell functionality in transplant recipients decreased after intake of the morning medication, which was more pronounced in patients with higher drug-dosages. Interestingly, calcineurin inhibitors differentially affected circadian rhythm of T-cell function, as patients on cyclosporine A showed a biphasic decrease in T-cell reactivity after drug-intake in the morning and evening, whereas T-cell reactivity in patients on tacrolimus remained rather stable.

Conclusions

The whole blood assay allows assessment of the inhibitory activity of immunosuppressive drugs in clinically relevant concentrations. Circadian alterations in T-cell function are determined by dose and type of immunosuppressive drugs and show distinct differences between cyclosporine A and tacrolimus. In future these findings may have practical implications to estimate the net immunosuppressive effect of a given drug-regimen that daily acts in an individual patient, and may contribute to individualize immunosuppression.

【 授权许可】

   
2015 Leyking et al.; licensee BioMed Central.

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