ArticleArquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery2026
The use of mesenchymal stem cells adhered to the suture filament in the closure of rat aponeurosis.
Article in Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAbdominal wall hernia is a common disease, with an incidence of around 20%. Recent studies have shown the benefits of using stem cells, especially mesenchymal ones, to improve tissue healing.
aimsEvaluate the use of mesenchymal stem cells derived from adipocytes adhered to a suture filament to enhance tensile strength and collagen formation in aponeurosis.
methodsHuman stem cells derived from adipocytes were adhered to a suture filament. Thirty-seven rats of the species Sprague Dawley were divided into three groups: Group 1 was the control group, Group 2 used only a regular suture filament to close abdominal aponeurosis, and Group 3 used a suture filament with stem cells. These animals were evaluated seven, 14, and 56 days after the intervention.
resultsRupture occurred at the semilunar line and the midline. All animals from Groups 2 and 3, submitted to incision and closure, evaluated at D7 and D14, showed a rupture in the midline. However, all animals evaluated at D56 (all groups) ruptured at the semilunar line. Furthermore, tensile strength was significantly lower at D7 in Groups 2 and 3 compared to Group 1 (p<0,001). On D14, Groups 2 and 3 showed a similar increase in tensile strength, but still inferior to the one observed in Group 1 (p<0,05). On D56, all groups reached similar values (p=0,074, p>0.05). Collagen histologic analysis showed that animals from Group 3 had the highest values in all time points, and Group 2 had higher values than Group 1 in all time points (p>0,05). In graphical analysis, Groups 2 and 3, on D7, had an increase in collagen, but on D14 showed a decrease, with a similar level on D56 (p>0,05).
conclusionsThis study do not support the use of mesenchymal stem cells to improve the healing of a midline abdominal incision in healthy subjects. However, an option for future studies is to employ this filament, combined with matrices for reconstructive purposes, in areas requiring extensive repair, such as large hernias where the aponeurosis is insufficient for defect correction.
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