• Ulus Travma Acil Cerrahi Derg · Jun 2024

    Effects of pioglitazone and metformin on abdominal adhesion formation in an experimental model.

    • Mehmet Ali Yücesoy, Engin Hatipoğlu, Osman Alperen Balık, Karolin Yanar, Şebnem Batur, Osman Şimşek, and Bedii Berat Apaydın.
    • Department of General Surgery, Istanbul University-Cerrahpaşa, Istanbul-Türkiye.
    • Ulus Travma Acil Cerrahi Derg. 2024 Jun 1; 30 (6): 406414406-414.

    BackgroundThis study evaluated the use of metformin or pioglitazone in preventing or reducing the development of post-operative intra-abdominal adhesion (PIAA) by employing histopathological, immunohistochemical, and biochemical analyses in an experimental adhesion model.MethodsFifty Wistar-Albino rats were divided into five groups: Group I (Control), Group II (Sham Treatment), Group III (Hy-aluronic Acid), Group IV (Metformin), and Group V (Pioglitazone). Adhesions were induced in the experimental groups, except for the sham group, using the scraping method. After 10 days, rats were euthanized for evaluation. Macroscopic adhesion degrees were assessed using Nair's scoring system. Immunohistochemical and enzyme-linked immunosorbent assay (ELISA) methods were utilized to assess serum, peritoneal lavage, and intestinal tissue samples. Fructosamine, interleukin-6 (IL-6), transforming growth factor-beta (TGF-β), and fibronectin levels were measured in serum and peritoneal lavage samples.ResultsThe groups exhibited similar Nair scores and Type I or Type III Collagen staining scores (all, p>0.05). Pioglitazone significantly reduced serum IL-6 and TGF-β levels compared to controls (p=0.002 and p=0.008, respectively). Both metformin and pioglitazone groups showed elevated IL-6 in peritoneal lavage relative to controls, while fibronectin levels in the lavage were lower in pioglitazone-treated rats compared to the sham group (all, p<0.005).ConclusionPioglitazone, but not metformin, demonstrated a positive biochemical impact on preventing PIAA formation in an experimental rat model, although histological impacts were not observed. Further experimental studies employing different dose/duration regimens of pioglitazone are needed to enhance our understanding of its effect on PIAA formation.

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