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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
2017 ; 12
(4
): e0176110
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Stepwise inhibition of T cell recruitment at post-capillary venules by orally
active desulfated heparins in inflammatory arthritis
#MMPMID28419144
Al Faruque H
; Kang JH
; Hwang SR
; Sung S
; Alam MM
; Sa KH
; Nam EJ
; Byun YR
; Kang YM
PLoS One
2017[]; 12
(4
): e0176110
PMID28419144
show ga
Identification of the structure-function relationship of heparin, particularly
between 2-O-, 6-O-, and N-sulfation and its anticoagulant or anti-inflammatory
activities, is critical in order to evaluate the biological effects of heparin,
especially in conjunction with modifications for oral formulation. In this study,
we demonstrated that removal of 2-O, 6-O, or N-desulfation and their hydrophobic
modifications have differential effects on the blocking of interactions between
sLeX and P-and L-selectins, with highest inhibition by 6-O desulfation, which was
consistent with their in vivo therapeutic efficacies on CIA mice. The 6-O
desulfation of lower molecular weight heparin (LMWH) retained the ability of LMWH
to interfere with T cell adhesion via selectin-sLeX interactions. Furthermore,
6DSHbD coated on the apical surface of inflamed endothelium directly blocked the
adhesive interactions of circulating T cells, which was confirmed in vivo by
suppressing T cell adhesion at post-capillary venular endothelium. Thus, in
series with our previous study demonstrating inhibition of transendothelial
migration, oral delivery of low anticoagulant LMWH to venular endothelium of
inflamed joint tissues ameliorated arthritis by the stepwise inhibition of T cell
recruitment and provides a rationale for the development of modified oral
heparins as innovative agents for the treatment of chronic inflammatory
arthritis.
|Animals
[MESH]
|Anti-Inflammatory Agents/*chemistry/pharmacology/*therapeutic use
[MESH]
|Anticoagulants/*chemistry/pharmacology/*therapeutic use
[MESH]