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  • Title: Batimastat, a synthetic inhibitor of matrix metalloproteinases, potentiates the antitumor activity of cisplatin in ovarian carcinoma xenografts.
    Author: Giavazzi R, Garofalo A, Ferri C, Lucchini V, Bone EA, Chiari S, Brown PD, Nicoletti MI, Taraboletti G.
    Journal: Clin Cancer Res; 1998 Apr; 4(4):985-92. PubMed ID: 9563894.
    Abstract:
    Batimastat (also known as BB-94) is a synthetic matrix metalloproteinase inhibitor that has shown antineoplastic and antiangiogenic activity in various tumor models. In this study, two human ovarian carcinoma (HOC) xenografts (HOC22 and HOC8) were used to investigate the effect of batimastat on the antineoplastic activity of cisplatin. Both xenografts produced ascites and solid lesions in the peritoneal cavity of nude mice. HOC cells were inoculated i.p. in nude mice, and treatment was started at different stages of the disease. Batimastat was administered alone or concurrently with or subsequent to cisplatin therapy. In all of the protocols, the response of HOC xenografts was confirmed by cytological analysis of ascites and histological examination of the organs in the peritoneal cavity. Treatment of nude mice bearing early-stage (3 days after tumor implantation) HOC22 or HOC8 with cisplatin or batimastat alone delayed tumor growth and increased the survival time of the mice, although all animals eventually died. In contrast, treatment with batimastat (60 mg/kg i.p. every other day, for a total of eight injections) concomitantly with cisplatin (4 mg/kg i.v., every 7 days for a total of three injections) completely prevented growth and spread of both xenografts, and all animals were alive and healthy on day 200. The potentiation of cisplatin's activity by batimastat was dose dependent and was observed in the treatment of both advanced (7 days after tumor inoculation) and late-stage (20 days after inoculation) tumor. The administration of batimastat following cisplatin therapy also led to significant improvement in the survival of mice compared to treatment with cisplatin alone. These results suggest a potentiation of the antineoplastic activity of cisplatin by batimastat and support the use of the two agents in combination in the treatment of ovarian cancer patients.
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