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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 Arterioscler+Thromb+Vasc+Biol
2017 ; 37
(4
): 707-716
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Activated Platelets Induce Endothelial Cell Activation via an Interleukin-1?
Pathway in Systemic Lupus Erythematosus
#MMPMID28153882
Nhek S
; Clancy R
; Lee KA
; Allen NM
; Barrett TJ
; Marcantoni E
; Nwaukoni J
; Rasmussen S
; Rubin M
; Newman JD
; Buyon JP
; Berger JS
Arterioscler Thromb Vasc Biol
2017[Apr]; 37
(4
): 707-716
PMID28153882
show ga
OBJECTIVE: Systemic lupus erythematosus (SLE) is associated with the premature
development of cardiovascular disease. The platelet-endothelium interaction is
important in the pathogenesis of cardiovascular disease. In this study, we
investigated the platelet phenotype from patients with SLE and matched controls,
and their effect on endothelial cells. APPROACH AND RESULTS: Platelet
aggregability was measured in 54 SLE subjects off antiplatelet therapy (mean age
40.1±12.8 years; 82% female; 37% white) with age- and sex-matched controls.
Platelets were coincubated with human umbilical vein endothelial cells (HUVECs)
and changes to gene expression assessed by an RNA array and quantitative reverse
transcription polymerase chain reaction. SLE disease activity index ranged from 0
to 22 (mean 5.1±3.9). Compared with controls, patients with SLE had significantly
increased monocyte and leukocyte-platelet aggregation and platelet aggregation in
response to submaximal agonist stimulation. An agnostic microarray of HUVECs
cocultured with SLE platelets found a platelet-mediated effect on endothelial
gene pathways involved in cell activation. Sera from SLE versus control subjects
significantly increased (1) activation of control platelets; (2) platelet
adhesion to HUVECs; (3) platelet-induced HUVEC gene expression of interleukin-8,
and intercellular adhesion molecule 1; and (4) proinflammatory gene expression in
HUVECs, mediated by interleukin-1?-dependent pathway. Incubation of SLE-activated
platelets with an interleukin-1?-neutralizing antibody or HUVECs pretreated with
interleukin-1 receptor antibodies attenuated the platelet-mediated activation of
endothelial cells. CONCLUSIONS: Platelet activity measurements and subsequent
interleukin-1?-dependent activation of the endothelium are increased in subjects
with SLE. Platelet-endothelial interactions may play a role in the pathogenesis
of cardiovascular disease in patients with SLE.