PMID- 28508247 OWN - NLM STAT- MEDLINE DCOM- 20180724 LR - 20181113 IS - 1573-2584 (Electronic) IS - 0301-1623 (Linking) VI - 49 IP - 9 DP - 2017 Sep TI - In human cell cultures, everolimus is inferior to tacrolimus in inhibiting cellular alloimmunity, but equally effective as regards humoral alloimmunity. PG - 1691-1697 LID - 10.1007/s11255-017-1615-x [doi] AB - PURPOSE: Acute cellular rejection is the major cause of immune-mediated graft failure early in the course of kidney transplantation, whereas chronic antibody-mediated rejection is a major contributor to graft loss in the late post-transplant phase. Based mainly on the results of short-term studies, the calcineurin inhibitor tacrolimus prevails over the mammalian target of rapamycin (mTOR) inhibitors. However, the toxicity profile of the two drug categories differs, making the interchange between them appealing. In this study, the effect of tacrolimus and of the mTOR inhibitor everolimus on cellular and humoral alloimmunity was evaluated. METHODS: Cellular alloimmunity was assessed by cell proliferation in two-way mixed lymphocyte reaction (MLR) with human peripheral blood mononuclear cells (PBMC). For assessing humoral alloimmunity, we developed a method in which humoral alloimmunity was induced in a one-way MLR. The de novo production of alloantibodies was measured with an antibody-mediated complement-dependent cytotoxicity assay, in which supernatants from the above MLRs were used against resting PBMC similar to the stimulator cells of the forementioned MLRs. Tacrolimus and everolimus were used at concentrations near their upper recommended trough levels. RESULTS: In two-way MLRs, tacrolimus inhibited cell proliferation more than everolimus. In one-way MLRs, tacrolimus and everolimus decreased alloantibody production to the same extent. CONCLUSIONS: In human cell cultures, everolimus is inferior to tacrolimus in inhibiting cellular alloimmunity, but equally effective as regards humoral alloimmunity. Thus, everolimus might be a safe alternative in case of tacrolimus toxicity, particularly after the early period of kidney transplantation. FAU - Eleftheriadis, Theodoros AU - Eleftheriadis T AUID- ORCID: 0000-0001-9302-1633 AD - Department of Nephrology, Faculty of Medicine, University of Thessaly, Neo Ktirio, Mezourlo Hill, 411 10, Larissa, Greece. teleftheriadis@yahoo.com. FAU - Pissas, Georgios AU - Pissas G AD - Department of Nephrology, Faculty of Medicine, University of Thessaly, Neo Ktirio, Mezourlo Hill, 411 10, Larissa, Greece. FAU - Sounidaki, Maria AU - Sounidaki M AD - Department of Nephrology, Faculty of Medicine, University of Thessaly, Neo Ktirio, Mezourlo Hill, 411 10, Larissa, Greece. FAU - Antoniadi, Georgia AU - Antoniadi G AD - Department of Nephrology, Faculty of Medicine, University of Thessaly, Neo Ktirio, Mezourlo Hill, 411 10, Larissa, Greece. FAU - Antoniadis, Nikolaos AU - Antoniadis N AD - Organ Transplant Unit, Hippokration General Hospital, Faculty of Medicine, Aristotle University of Thessaloniki, 546 42, Thessaloniki, Greece. FAU - Liakopoulos, Vassilios AU - Liakopoulos V AD - Department of Nephrology, Faculty of Medicine, University of Thessaly, Neo Ktirio, Mezourlo Hill, 411 10, Larissa, Greece. FAU - Stefanidis, Ioannis AU - Stefanidis I AD - Department of Nephrology, Faculty of Medicine, University of Thessaly, Neo Ktirio, Mezourlo Hill, 411 10, Larissa, Greece. LA - eng PT - Comparative Study PT - Journal Article DEP - 20170515 PL - Netherlands TA - Int Urol Nephrol JT - International urology and nephrology JID - 0262521 RN - 0 (Immunosuppressive Agents) RN - 0 (Isoantibodies) RN - 9HW64Q8G6G (Everolimus) RN - WM0HAQ4WNM (Tacrolimus) SB - IM MH - Adult MH - Cell Proliferation/*drug effects MH - Cells, Cultured MH - Everolimus/*pharmacology MH - Humans MH - Immunity, Cellular/*drug effects MH - Immunity, Humoral/*drug effects MH - Immunosuppressive Agents/*pharmacology MH - Isoantibodies/metabolism MH - Leukocytes, Mononuclear MH - Lymphocyte Culture Test, Mixed MH - Tacrolimus/*pharmacology OTO - NOTNLM OT - Cellular alloimmunity OT - Everolimus OT - Humoral alloimmunity OT - Tacrolimus OT - Transplantation EDAT- 2017/05/17 06:00 MHDA- 2018/07/25 06:00 CRDT- 2017/05/17 06:00 PHST- 2017/03/12 00:00 [received] PHST- 2017/05/09 00:00 [accepted] PHST- 2017/05/17 06:00 [pubmed] PHST- 2018/07/25 06:00 [medline] PHST- 2017/05/17 06:00 [entrez] AID - 10.1007/s11255-017-1615-x [pii] AID - 10.1007/s11255-017-1615-x [doi] PST - ppublish SO - Int Urol Nephrol. 2017 Sep;49(9):1691-1697. doi: 10.1007/s11255-017-1615-x. Epub 2017 May 15.