CD4+CD45RO+CD25-/lowCD127+: CD4+CD45RO+CD25hiCD127-/low Ratio in Peripheral Blood: A Useful Biomarker to Detect Cardiac Allograft Vasculopathy in Heart Transplanted Patients.

Abstract:

BACKGROUND:Cardiac allograft vasculopathy (CAV) is a major limitation in long-term graft survival after heart transplantation (HTx). Its prediction and detection at an early stage is a challenge because an accurate, minimally invasive blood test is lacking. The aim of this study was to analyze the relationship of Tact (CD4CD45ROCD25-CD127) cells, Th1 cells, and thymus-derived regulatory (Treg) (CD4CD45ROCD25CD127) cells in peripheral blood with the development of CAV in HTx patients. METHODS:First, we performed a cross-sectional study in 29 patients at least 2 years after HTx, 17 with CAV and 12 without CAV. We then prospectively followed a group of 38 patients for 2 years immediately after HTx surgery. In both groups, we analyzed the relationship between CAV and the effector-to-regulatory T cell ratio. RESULTS:In the cross-sectional study, patients with CAV showed statistically significant higher values of Th1-to-FoxP3Treg and Tact-to-CD127Treg ratios than non-CAV patients, with P less than 0.01 and P less than 0.001, respectively. Receiver operating characteristic curve analysis showed that the Tact:CD127Treg ratio was a potential biomarker of CAV, clearly discriminating CAV and non-CAV patients (area under curve [AUC] = 0.955; P = 0.001). In the prospective part of the study, we monitored the Th1:FoxP3Treg and Tact:CD127Treg ratios using the best tradeoff between anterior receiver operating characteristic sensitivity and specificity as a cutoff. Changes in the Tact:CD127Treg ratio were detected earlier than changes in the Th1:FoxP3Treg ratio. Both ratios were higher in HTx patients with CAV. CONCLUSION:The Tact-to-Treg ratio is a valuable follow-up marker to detect HTx patients at risk of developing CAV.

journal_name

Transplantation

journal_title

Transplantation

authors

Roldán C,Mirabet S,Cecilia C,Brossa V,Roig E,Martín C,Gelpí C

doi

10.1097/TP.0000000000000493

subject

Has Abstract

pub_date

2015-07-01 00:00:00

pages

1521-8

issue

7

eissn

0041-1337

issn

1534-6080

journal_volume

99

pub_type

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