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Published on: June 7, 2015
Nanofiber Hydrogel Drug Delivery System for Prevention of Postsurgical Intestinal Adhesion
Bei Zhao1, Panyong Zhu1, Hongyu Zhang1
1Zhoukou Central Hospital, Zhoukou 466001, China.
Insights
A novel dual-drug patch effectively prevents postsurgical intestinal adhesion (PIA) by combining anti-inflammatory and pro-repair drugs. This innovation offers a promising solution for reducing complications after abdominal surgery.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Surgical Innovation
Background:
- Postsurgical intestinal adhesion (PIA) is a frequent complication of abdominal surgery, leading to significant health issues like obstruction and infertility.
- Current prevention methods using hydrogels or nanofibrous films have limitations.
- Developing advanced barrier materials is crucial for mitigating PIA.
Purpose of the Study:
- To develop a novel dual-structure drug delivery patch for preventing postsurgical intestinal adhesion.
- To investigate the efficacy of a combined anti-inflammatory and pro-repair drug delivery system.
Main Methods:
- A dual-structure patch (NHP) was created using poly lactic-co-glycolic acid (PLGA) nanofibers and a chitosan hydrogel.
- PLGA nanofibers were loaded with deferoxamine mesylate (DFO) for sustained release.
- The chitosan hydrogel was loaded with dexamethasone (DXMS) for rapid release.
Main Results:
- The hydrogel component rapidly released DXMS, providing acute anti-inflammatory effects.
- The PLGA nanofibers sustained DFO release, promoting peritoneal repair via angiogenesis.
- In vivo studies demonstrated that NHP effectively prevented PIA by reducing inflammation and vascularization.
Conclusions:
- The NHP patch successfully inhibits postsurgical intestinal adhesion.
- This dual-drug delivery system shows significant potential for clinical application in preventing PIA.
- NHP offers a promising strategy for improving surgical outcomes and patient recovery.
Abstract:
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.
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