RT Journal Article T1 Decrease in CD14++CD16+Monocytes in Low-Immunological-Risk Kidney Transplant Patients with Subclinical Borderline Inflammation A1 Caballero, Abelardo A1 Vazquez-Sanchez, Teresa A1 Ruiz-Esteban, Pedro A1 Leon, Myriam A1 Alonso-Titos, Juana A1 Lopez, Veronica A1 Sola, Eugenia A1 Gutierrez, Elena A1 Cabello, Mercedes A1 Casas-Gonzalez, Cristina A1 Pozo-Alvarez, Rafael A1 Delgado-Burgos, Juan A1 Hernandez, Domingo K1 kidney transplant K1 monocytes K1 CD14++CD16+ K1 kidney biopsy K1 borderline lesions K1 Rejection K1 Monocytes K1 Cells K1 Prospects K1 Biopsies AB DefinitionWe determined the association between CD14++CD16+ monocytes and subclinical infiltrates that do not reach the histological threshold for rejection (& GE;Banff IA). We studied low-immunological-risk kidney-transplant recipients in a clinical trial (NCT02284464; EudraCT 2012-003298-24) whose protocol biopsy in the third month showed no significant changes or borderline lesions (BL). Flow cytometry was used to analyze the percentage of CD14++CD16+ monocytes in peripheral blood (PB) and blood from a fine-needle-aspiration biopsy (FNAB). A protocol biopsy was performed in 81 low-immunological-risk patients, of whom 15 were excluded (BK polyomavirus and rejection). The 28 (42.4%) with borderline lesions had significantly low levels of CD14++CD16+ in PB compared to patients with normal biopsies (7.9 & PLUSMN; 5.4 vs. 13.0 & PLUSMN; 12.8; p = 0.047). Patients without significant changes had similar percentages of CD14++CD16+ monocytes in the graft blood (GB) and FNAB blood. The percentage of these monocytes in the patients with an interstitial infiltrate, however, increased significantly in the FNAB blood compared to the GB: 16.9 & PLUSMN; 16.6 vs. 7.9 & PLUSMN; 5.4; p = 0.006. A difference of 50% in CD14++CD16+ in the GB versus the PB was a significant risk factor (p = 0.002) for BL, increasing the risk seven times. A decrease in CD14++CD16+ in the PB could be associated with the recruitment of these cells to the graft tissue in cases of subclinical BL inflammatory infiltrates below the threshold for rejection. PB Mdpi YR 2021 FD 2021-11-01 LK https://hdl.handle.net/10668/24496 UL https://hdl.handle.net/10668/24496 LA en DS RISalud RD Apr 6, 2025