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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Clin+Exp+Immunol
2017 ; 188
(2
): 299-310
Nephropedia Template TP
gab.com Text
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English Wikipedia
Lymph node and circulating T cell characteristics are strongly correlated in
end-stage renal disease patients, but highly differentiated T cells reside within
the circulation
#MMPMID28142201
Dedeoglu B
; de Weerd AE
; Huang L
; Langerak AW
; Dor FJ
; Klepper M
; Verschoor W
; Reijerkerk D
; Baan CC
; Litjens NH
; Betjes MG
Clin Exp Immunol
2017[May]; 188
(2
): 299-310
PMID28142201
show ga
Ageing is associated with changes in the peripheral T cell immune system, which
can be influenced significantly by latent cytomegalovirus (CMV) infection. To
what extent changes in circulating T cell populations correlate with T cell
composition of the lymph node (LN) is unclear, but is crucial for a comprehensive
understanding of the T cell system. T cells from peripheral blood (PB) and LN of
end-stage renal disease patients were analysed for frequency of recent thymic
emigrants using CD31 expression and T cell receptor excision circle content,
relative telomere length and expression of differentiation markers. Compared with
PB, LN contained relatively more CD4(+) than CD8(+) T cells (P?0·001). The
percentage of naive and central memory CD4(+) and CD8(+) T cells and thymic
output parameters showed a strong linear correlation between PB and LN. Highly
differentiated CD28(null) T cells, being CD27(-) , CD57(+) or programmed death 1
(PD-1(+) ), were found almost exclusively in the circulation but not in LN. An
age-related decline in naive CD4(+) and CD8(+) T cell frequency was observed
(P?=?0·035 and P?=?0·002, respectively) within LN, concomitant with an increase
in central memory CD8(+) T cells (P?=?0·033). Latent CMV infection increased
dramatically the frequency of circulating terminally differentiated T cells, but
did not alter T cell composition and ageing parameters of LN significantly.
Overall T cell composition and measures of thymic function in PB and LN are
correlated strongly. However, highly differentiated CD28(null) T cells, which may
comprise a large part of circulating T cells in CMV-seropositive individuals, are
found almost exclusively within the circulation.