[Acute rejection of kidney transplant is associated with induction of replicative senescence in CD8+ T lymphocytes].
Acute renal rejection repeatedly activates immunocompromised CD8 + T cells. Maintained activation of CD8 + T cells can induce a process of replicative senescence. In the present study, we will evaluate in CD8 lymphocytes from patients undergoing acute renal rejection characteristics of replicative senescence such as: a) low expression of CD28 molecule; b) telomere shortening and c) increase production of proinflammatory cytokines. The study was carried out in CD8 + T cells from 14 patients transplanted without clinical evidences of acute renal rejection, 14 patients kidney transplanted with clinical and anatomopathological evidences of acute renal rejection, 8 healthy controls. The results shown that in peripheral blood and renal biopsy of patients with acute renal rejection there is a significant increment of the population of T cells CD28-CD8+, with short telomere length, as compared with healthy controls and patients without acute renal rejection. The presence of senescent cells was associated with high levels of IL-10 and IFN-Y in plasma and urine. In conclusion our study suggest that the CD8 + T cells of patients with acute renal rejection suffer a process of replicative senescence.
Jiménez
R
R
Servicio de Nefrología, Hospital Universitario Reina Sofía, Avda Menéndez Pidal, Córdoba. charitojm@yahoo.es
Carracedo
J
J
Ramírez
R
R
Rodríguez
A
A
del Castillo
D
D
Pérez
R
R
Aljama
P
P
D000328:Adult; D000368:Aged; D018106:CD28 Antigens; D018414:CD8-Positive T-Lymphocytes / Q000502:physiology*; D016922:Cellular Senescence; D005260:Female; D006084:Graft Rejection / Q000276:immunology*; D006801:Humans; D007371:Interferon-gamma / Q000097:blood; D016753:Interleukin-10 / Q000097:blood; D016030:Kidney Transplantation / Q000276:immunology*; D008297:Male; D008875:Middle Aged
D018106:CD28 Antigens; D016753:Interleukin-10; D007371:Interferon-gamma