Changes in abdominal wall after mesh implantation in rats

Area of Science:

• Biomaterials Science
• Surgical Innovation
• Tissue Engineering

Background:

• Non-absorbable synthetic materials are crucial for repairing abdominal wall defects.
• Evaluating tissue response to biomaterials is essential for surgical safety and efficacy.
• Incisional hernias require robust reinforcement for successful abdominal wall reconstruction.

Purpose of the Study:

• To compare the tissue reactions of Prolene, Gore-Tex, and flax in an incisional hernia model.
• To assess the biocompatibility and efficacy of these materials for abdominal wall defect coverage.
• To determine the most suitable material for clinical application based on biological tolerance and cost.

Main Methods:

• An incisional hernia model was established in Wistar rats.
• Three non-absorbable materials (Prolene, Gore-Tex, flax) were implanted to cover abdominal wall defects.
• Tissue reactions, including inflammatory and fibroplastic responses, were evaluated at 35, 49, 63, 77, and 91 days post-implantation.

Main Results:

• Gore-Tex exhibited the lowest tissue response, minimal inflammation, and no significant peritoneal adhesions.
• Prolene showed no considerable cellular response or scarring but induced significant peritoneal adhesions and lipidic tissue infiltration.
• Flax elicited the most extensive inflammatory reactions, making it least suitable for abdominal wall repair.

Conclusions:

• Gore-Tex demonstrates superior biocompatibility with minimal tissue reaction and adhesion formation.
• Prolene offers acceptable biological tolerance and cost-effectiveness, making it a viable option for clinical use.
• Flax is unsuitable for abdominal wall repair due to its pronounced inflammatory response.