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Toll-like 4 receptor (TLR4) expression on peripheral blood mononuclear cells in renal transplant recipients with pre-transplant chronic interstitial nephritis indicates patients at risk of graft deterioration.

Abstract：

:Data binding the expression of Toll-like 4 receptor (TLR4ex), transplanted kidney function, and the cause of pre-transplant end-stage renal disease are scarcely available. OBJECTIVE:To investigate the relationship between pre-transplant chronic interstitial nephritis (CIN), TLR4ex and transplanted kidney function. MATERIALS AND METHODS:TLR4ex was measured in peripheral blood mononuclear cells of 43 CIN kidney transplant recipients. We compared TLR4ex among 33 patients with pre-transplant chronic non-infectious interstitial nephritis (NIN) and 10 patients with pre-transplant chronic pyelonephritis (Py). At the beginning (Day-0) TLR4ex, as well as concentrations of cyclosporin A (CyA) and tacrolimus (TAC) were determined. Both CIN and NIN patients were divided according to the respective median of TLR4ex into groups of low-TLR4 expression (L-TLR4ex) and high-TLR4 expression (H-TLR4ex). Serum creatinine/glomerular filtration rate (sCr/EGFR) was assessed on Day-0 and after the follow-up (F-up). The magnitudes of sCr/EGFR change (ΔsCr/ΔEGFR) were evaluated. The treatment was maintained stable along the F-up period (median 11.9 months). RESULTS:Day-0: in CIN with L-TLR4ex TAC was lower but sCr/EGFR were not different from H-TLR4ex; in Py TLR4ex and TAC were lower than in NIN with no difference in sCR/eGFR. After F-up: in CIN with L-TLR4ex sCR/EGFR and ΔsCr/ΔEGFR were worse than in H-TLR4ex; in Py sCR/EGFR and ΔsCr/ΔEGFR were worse than in NIN. The regression analysis points out prospective impact of Py and TLR4ex on sCR/eGFR and ΔsCr/ΔeGFR. CONCLUSION:In CIN, both TLR4ex and Tac appear to be a useful positive predictor of the effectiveness of immunosuppression. Chronic pyelonephritis indirectly promotes faster progression of chronic transplanted kidney disease.

journal_name

Transpl Immunol

journal_title

Transplant immunology

authors

Zmonarski SC,Banasik M,Golebiowski T,Madziarska K,Mazanowska O,Myszka M,Zmonarska J,Letachowicz K,Dawiskiba T,Krajewska M

doi

10.1016/j.trim.2020.101319

subject

Has Abstract

pub_date

2020-10-01 00:00:00

pages

101319

eissn

0966-3274

issn

1878-5492

pii

S0966-3274(19)30165-0

journal_volume

pub_type

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Toll-like 4 receptor (TLR4) expression on peripheral blood mononuclear cells in renal transplant recipients with pre-transplant chronic interstitial nephritis indicates patients at risk of graft deterioration.