Intestinal adhesion is one of the complications that
occurs more
frequently after abdominal surgery. Postsurgical intestinal adhesion
(PIA) can lead to a series of health problems, including abdominal
pain, intestinal obstruction, and female infertility. Currently, hydrogels
and nanofibrous films as barriers are often used for preventing PIA
formation; however, these kinds of materials have their intrinsic
disadvantages. Herein, we developed a dual-structure drug delivery
patch consisting of poly lactic-co-glycolic acid
(PLGA) nanofibers and a chitosan hydrogel (NHP). PLGA nanofibers loaded
with deferoxamine mesylate (DFO) were incorporated into the hydrogel;
meanwhile, the hydrogel was loaded with anti-inflammatory drug dexamethasone
(DXMS). The rapid degradation of the hydrogel facilitated the release
of DXMS at the acute inflammatory stage of the early injury and provided
effective anti-inflammatory effects for wound sites. Moreover, PLGA
composite nanofibers could provide sustained and stable release of
DFO for promoting the peritoneal repair by the angiogenesis effects
of DFO. The in vivo results indicated that NHP can effectively prevent
PIA formation by restraining inflammation and vascularization, promoting
peritoneal repair. Therefore, we believe that our NHP has a great
potential application in inhibition of PIA.