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2015 ; 30
(2
): 159-63
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Study of novel coating strategy for coronary stents: simutaneous coating of VEGF
and anti- CD34 antibody
#MMPMID26107446
Song CL
; Li Q
; Yu YP
; Wang G
; Wang JP
; Lu Y
; Zhang JC
; Diao HY
; Liu JG
; Liu YH
; Liu J
; Li Y
; Cai D
; Liu B
Rev Bras Cir Cardiovasc
2015[Mar]; 30
(2
): 159-63
PMID26107446
show ga
INTRODUCTION: Intravascular coronary stenting has been used in the treatment of
coronary artery disease (CAD), with a major limitation of in-stent restenosis
(ISR). The 316 stainless steel has been widely used for coronary stents. In this
study, we developed a novel coating method to reduce ISR by simultaneously
coating vascular endothelial growth factor (VEGF) and anti-CD34 antibody on 316L
stainless steel. METHODS: Round 316L stainless steel sheets in the D-H group were
polymerized with compounds generated from condensation reaction of dopamine and
heparin using N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide (EDC) and
N-hydroxysuccinimide (NHS). Sixteen sheets from the D-H group were further
immersed into 1ug/ml VEGF165 and 3mg/ml heparin sodium one after another for 10
times, and named as the D-(H-V)10 group. Eight sheets from the D-(H-V)10 group
were coated with anti-CD34 antibody and termed as the D-(H-V)10-A group.
Immunofluorescence assay and ELISA were used to evaluate whether the 316L
stainless steel disks were successfully coated with VEGF and anti-CD34 antibody.
RESULTS: The results of immunofluorescence assay and ELISA showed that VEGF could
be detected in the D-(H-V)10 and D-(H-V)10-A group, suggesting the steel sheets
were successfully covered with VEGF. Anti-CD34 antibody could only be observed in
the D-(H-V)10-A group, which was the only group coated with CD34 antibody. Both
results suggested that the 316L stainless steel sheets were successfully coated
with VEGF and anti-CD34 antibody. CONCLUSION: Our study developed a method to
simultaneously coat VEGF and anti-CD34 antibody to stainless metal steel. This
research serves as a fundamental role for a novel coating strategy.