PMID- 15808527 OWN - NLM STAT- MEDLINE DCOM- 20051028 LR - 20050405 IS - 0041-1345 (Print) IS - 0041-1345 (Linking) VI - 37 IP - 1 DP - 2005 Jan-Feb TI - The effects of renal transplantation on circulating precursor dendritic cells. PG - 3-6 AB - BACKGROUND: Dendritic cells (DCs) are potent antigen-presenting cells that induce and regulate immune responses. Recent advances allow accurate quantification of peripheral blood (PB) myeloid and plasmacytoid DC populations (mDC and pDC, respectively), although the response to renal transplantation (RT) remains unknown. METHODS: Using flow cytometry, PBDC levels were quantified in patients with end-stage renal disease (ESRD) undergoing renal transplantation. RESULTS: PBDC levels were significantly reduced in ESRD patients pretransplantation compared to healthy controls, with further reduction noted immediately following a hemodialysis session. RT resulted in a dramatic decrease in both subsets, with a greater reduction of pDC levels. Both subset levels were significantly lower than in control patients undergoing abdominal surgery without RT. Subgroup analysis revealed significantly greater mDC reduction in RT recipients receiving antilymphocyte therapy, with preferential binding of antibody preparation to this subset. Samples from later time points revealed a gradual return of PBDC levels back to pretransplant values concurrent with overall reduction of immunosuppression. Finally, PBDC levels were significantly reduced in patients with BK virus nephropathy compared to recipients with stable graft function, despite lower overall immunosuppression. CONCLUSIONS: Our findings suggest that PBDC levels may reflect the degree of immunosuppression in renal allograft recipients. Furthermore, PBDC monitoring may represent a novel strategy to predict important outcomes such as acute rejection, long-term graft loss, and infectious complications. FAU - Womer, K L AU - Womer KL AD - Department of Medicine, Gainesville, Florida, USA. womerkl@ufl.edu FAU - Peng, R AU - Peng R FAU - Patton, P R AU - Patton PR FAU - Kaleem, A AU - Kaleem A FAU - Bucci, M AU - Bucci M FAU - Murawski, M R AU - Murawski MR FAU - Schold, J AU - Schold J FAU - Efron, P A AU - Efron PA FAU - Hemming, A W AU - Hemming AW FAU - Srinivas, T R AU - Srinivas TR FAU - Meier-Kriesche, H-U AU - Meier-Kriesche HU FAU - Kaplan, B AU - Kaplan B FAU - Clare-Salzler, M J AU - Clare-Salzler MJ LA - eng PT - Journal Article PL - United States TA - Transplant Proc JT - Transplantation proceedings JID - 0243532 SB - IM MH - Adult MH - Dendritic Cells/*immunology MH - Female MH - Flow Cytometry MH - Humans MH - Kidney Failure, Chronic/immunology/surgery MH - Kidney Transplantation/*immunology MH - Male MH - Middle Aged MH - Reference Values MH - Stem Cells/immunology EDAT- 2005/04/06 09:00 MHDA- 2005/10/29 09:00 CRDT- 2005/04/06 09:00 PHST- 2005/04/06 09:00 [pubmed] PHST- 2005/10/29 09:00 [medline] PHST- 2005/04/06 09:00 [entrez] AID - S0041-1345(04)01387-9 [pii] AID - 10.1016/j.transproceed.2004.11.076 [doi] PST - ppublish SO - Transplant Proc. 2005 Jan-Feb;37(1):3-6. doi: 10.1016/j.transproceed.2004.11.076.