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  • Title: Effects of intraperitoneal mitomycin C adsorbed on activated carbon on adhesion formation and mesothelial cells in vitro.
    Author: Jansen M, Fass J, Langejürgen E, Forsch S, Tietze L, Schumpelick V.
    Journal: Eur J Surg; 2000 Jul; 166(7):572-6. PubMed ID: 10965838.
    Abstract:
    OBJECTIVE: To investigate the incidence of adhesions after intraperitoneal instillation of mitomycin C adsorbed on activated carbon (MMC-CH). DESIGN: Animal and laboratory studies. SETTING: University hospital, Germany. ANIMALS: 90 Sprague-Dawley rats. INTERVENTIONS: Laparotomy, small bowel anastomosis, and intraperitoneal instillation of saline (controls, n = 27), activated carbon alone (n = 24) or MMC-CH (n = 26). Cultures of monolayers of human mesothelial cells. MAIN OUTCOME MEASURES: Measurements of adhesions by planimetry. Toxicity of mitomycin C alone and charcoal alone in mesothelial cell monolayers as reflected by cell proliferation and measurement of lactate dehydrogenase activity. Concentrations of plasminogen activator (tPA) and plasminogen activator inhibitor 1 (PAI-1) as measures of the fibrinolytic activity of mesothelial cells. RESULTS: Both activated carbon and MMC-CH caused a significant increase of adhesion formation in rats. Activated carbon also reduced the fibrinolytic activity of mesothelial cells, and mitomycin C caused concentration-dependent cytotoxicity in vitro. CONCLUSIONS: Activated carbon combined with high concentrations of mitomycin C may cause intraperitoneal infective complications by increasing the rate of adhesion formation and reducing the fibrinolytic activity of mesothelial cells. We recommend a new absorbable carrier for intraperitoneal chemotherapy.
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