TGF-β expression on different suturing technique for abdominal skin wound closure in rats

BACKGROUND: The method of closing the abdominal wall, as well as, the choice of material for stitching are important aspects of efficient incision closure. Generally, transforming growth factor-beta (TGF-β) is involved in the wound healing process. Suturing procedures also play a part in the wound dehiscence occurrence. This study aimed to compare TGF-β expressions in rats after using the large stitch vs. small stitch technique for abdominal skin wound closure. METHODS: A total of twenty Wistar rats (Rattus norvegicus) were used in this experiment. Small tissue bites of 5 mm were obtained by the small stitch group and the large stitch group received large bites of 10 mm. Abdominal skin incisions were closed by running sutures. On days 4 and 7, the animals were euthanized. For TGF-β expressions, histological parts of the tissue-embedded sutures were analyzed. With significance set at p < 0.05, two-way ANOVA showed that on days 4 and 7, the TGF-β expressions of the rats in the small stitch group were nearly identical to those in the large stitch groups. RESULTS: After including twenty rats in this study, results showed the TGF-β expressions on days 4 and 7 in rats in the small stitch group were equivalent to those in the large stitch group. (p = 0.45). CONCLUSIONS: Between the small and the large stitch groups, the TGF-β expressions are similar, suggesting that the suturing methods do not have any significantly different beneficial impact on the frequency of wound dehiscence.