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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 PLoS+One
2016 ; 11
(10
): e0165373
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gab.com Text
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English Wikipedia
Autoantibodies against Modified Histone Peptides in SLE Patients Are Associated
with Disease Activity and Lupus Nephritis
#MMPMID27780265
Dieker J
; Berden JH
; Bakker M
; Briand JP
; Muller S
; Voll R
; Sjöwall C
; Herrmann M
; Hilbrands LB
; van der Vlag J
PLoS One
2016[]; 11
(10
): e0165373
PMID27780265
show ga
Persistent exposure of the immune system to death cell debris leads to
autoantibodies against chromatin in patients with systemic lupus erythematosus
(SLE). Deposition of anti-chromatin/chromatin complexes can instigate
inflammation in multiple organs including the kidney. Previously we identified
specific cell death-associated histone modifications as targets of autoantibodies
in SLE. In this study we addressed, in a large cohort of SLE patients and
controls, the question whether plasma reactivities with specific histone peptides
associated with serology and clinical features. Plasma from SLE patients with and
without lupus nephritis, disease controls, and healthy controls, were tested in
ELISA with histone H4 peptide acetylated at lysines 8, 12 and 16 (H4pac), H2B
peptide acetylated at lysine 12 (H2Bpac), H3 peptide trimethylated at lysine 27
(H3pme), and their unmodified equivalents. SLE patients displayed a higher
reactivity with the modified equivalent of each peptide. Reactivity with H4pac
showed both a high sensitivity (89%) and specificity (91%) for SLE, while H2Bpac
exhibited a high specificity (96%) but lower sensitivity (69%). Reactivity with
H3pme appeared not specific for SLE. Anti-H4pac and anti-H2Bpac reactivity
demonstrated a high correlation with disease activity. Moreover, patients
reacting with multiple modified histone peptides exhibited higher SLEDAI and
lower C3 levels. SLE patients with renal involvement showed higher reactivity
with H2B/H2Bpac and a more pronounced reactivity with the modified equivalent of
H3pme and H2Bpac. In conclusion, reactivity with H4pac and H2Bpac is specific for
SLE patients and correlates with disease activity, whereas reactivity with H2Bpac
is in particular associated with lupus nephritis.