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2015 ; 8
(5
): 490-4
Nephropedia Template TP
gab.com Text
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English Wikipedia
Comparison between self-assembling peptide nanofiber scaffold (SAPNS) and fibrin
sealant in neurosurgical hemostasis
#MMPMID26077376
Xu FF
; Wang YC
; Sun S
; Ho AS
; Lee D
; Kiang KM
; Zhang XQ
; Lui WM
; Liu BY
; Wu WT
; Leung GK
Clin Transl Sci
2015[Oct]; 8
(5
): 490-4
PMID26077376
show ga
RADA16-I is a synthetic type I self-assembling peptide nanofiber scaffold (SAPNS)
which may serve as a novel biocompatible hemostatic agent. Its application in
neurosurgical hemostasis, however, has not been explored. Although RADA16-I is
nontoxic and nonimmunogenic, its intrinsic acidity may potentially provoke
inflammation in the surgically injured brain. We conducted an animal study to
compare RADA16-I with fibrin sealant, a commonly used agent, with the hypothesis
that the former would be a comparable alternative. Using a standardized surgical
brain injury model, 30 Sprague-Dawley rats were randomized into three treatment
groups: RADA16-I, fibrin sealant or gelatin sponge (control). Animals were
sacrificed on day 3 and 42. Astrocytic and microglial infiltrations within the
cerebral parenchyma adjacent to the operative site were significantly lower in
the RADA16-I and fibrin sealant groups than control. RADA16-I did not cause more
cellular inflammatory response despite its acidity when compared with fibrin
sealant. Immunohistochemical studies showed infiltration by astrocytes and
microglia into the fibrin sealant and RADA16-I grafts, suggesting their potential
uses as tissue scaffolds. RADA16-I is a promising candidate for further
translational and clinical studies that focus on its applications as a safe and
effective hemostat, proregenerative nanofiber scaffold as well as drug and cell
carrier.