Peripheral blood lymphocyte populations in end-stage liver diseases.

GOALS/BACKGROUND The aim of this study was to decipher whether end-stage liver failure modifies peripheral blood lymphocytes (PBL) in a homogeneous manner, independently of the base pathology, or, if on the contrary, PBL subsets show a different profile in each hepatic disease. METHODS We studied PBL subsets in 71 patients with end-stage liver disease, before liver transplant, and 74 healthy controls by flow cytometry. The results were statistically compared between patients and controls, and cohorts of patients classified according to their base pathology. RESULTS We observed lower absolute numbers in all lymphocyte populations in patients compared with controls. We found an increment of CD3+ activated cells (P<10) and CD45RO+CD4+ (P<10) in chronic hepatitis C virus versus controls; hepatitis B virus showed high TCRgammadelta+ and CD8+ T cells with respect to controls (P=0.008 and P=0.029, respectively); alcoholic cirrhotic patients showed low CD8+, mainly CD45RA+CD8+ (P=0.007) and high CD45RO+CD4+ (P<10) compared with the normal population; autoimmune diseases showed lower CD3+ and TCRalphabeta+ (P=0.002 and P=0.0001) than controls. CONCLUSIONS Regardless of the base pathology, patients with end-stage liver disease show a low absolute number of lymphocyte populations compared with controls. However, PBL profiles are different, characteristic, and specific of every disease causing chronic liver failure.