BACKGROUND: Metronomic chemotherapy (MCT) refers to the chronic and equally spaced administration of low doses of different chemotherapy drugs, without extended rest periods. Herein, we investigated the therapeutic efficacy of metronomic cyclophosphamide (Cy) combined with doxorubicin (Dox) in two mouse mammary adenocarcinoma models. MATERIALS AND METHODS: Mice were s.c. challenged with M-234p or M-406 mammary tumors, and when the tumors reached ∼150 mm(3), they were treated with: (I) no treatment (controls); (II) Cy in the drinking water (30 mg/kg body weight/day); (III) Dox (0.5 mg/kg body weight i.p. three times/week); (IV) treated as (II) + (III). Mice challenged i.v. with M-234p or M-406 tumor cells received, on day 3, the same treatments. RESULTS: We found that MCT with Cy plus Dox inhibited tumor growth, decreased lung metastases, and increased the median survival time, while having low toxic effect. Combined MCT was more effective than each monotherapy causing decrease in VEGF serum concentration and tumor proliferation rate plus increase in tumor apoptosis. CONCLUSION(S): The therapeutic benefits of combined MCT with Cy and Dox on mammary adenocarcinomas together with its low toxic effect profile suggest the possibility of future translation into the clinic.
BACKGROUND: Metronomic chemotherapy (MCT) refers to the chronic and equally spaced administration of low doses of different chemotherapy drugs, without extended rest periods. Herein, we investigated the therapeutic efficacy of metronomic cyclophosphamide (Cy) combined with doxorubicin (Dox) in two mouse mammary adenocarcinoma models. MATERIALS AND METHODS:Mice were s.c. challenged with M-234p or M-406 mammary tumors, and when the tumors reached ∼150 mm(3), they were treated with: (I) no treatment (controls); (II) Cy in the drinking water (30 mg/kg body weight/day); (III) Dox (0.5 mg/kg body weight i.p. three times/week); (IV) treated as (II) + (III). Mice challenged i.v. with M-234p or M-406 tumor cells received, on day 3, the same treatments. RESULTS: We found that MCT with Cy plus Dox inhibited tumor growth, decreased lung metastases, and increased the median survival time, while having low toxic effect. Combined MCT was more effective than each monotherapy causing decrease in VEGF serum concentration and tumor proliferation rate plus increase in tumor apoptosis. CONCLUSION(S): The therapeutic benefits of combined MCT with Cy and Dox on mammary adenocarcinomas together with its low toxic effect profile suggest the possibility of future translation into the clinic.
Authors: Simone Becattini; Eric R Littmann; Rebecca A Carter; Sohn G Kim; Sejal M Morjaria; Lilan Ling; Yangtsho Gyaltshen; Emily Fontana; Ying Taur; Ingrid M Leiner; Eric G Pamer Journal: J Exp Med Date: 2017-06-06 Impact factor: 14.307
Authors: Adriana Rosé; Nicolas André; Viviana R Rozados; Leandro E Mainetti; Mauricio Menacho Márquez; María José Rico; Paula Schaiquevich; Milena Villarroel; Lauro Gregianin; Jaume Mora Graupera; Wendy Gómez García; Sidnei Epelman; Carlos Alasino; Daniel Alonso; Guillermo Chantada; O Graciela Scharovsky Journal: Ecancermedicalscience Date: 2016-09-06
Authors: Dean G Campelj; Danielle A Debruin; Cara A Timpani; Alan Hayes; Craig A Goodman; Emma Rybalka Journal: Sci Rep Date: 2020-09-24 Impact factor: 4.379