info:eu-repo/semantics/article
Optimization of the classical oral cancerization protocol in hamster to study oral cancer therapy
Optimization of the classical oral cancerization protocol in hamster to study oral cancer therapy
Fecha
2020-092020-09
Registro en:
Santa Cruz, Iara Sofía; Garabalino, Marcela Alejandra; Trivillin, Verónica Andrea; Itoiz, María Elina; Pozzi, Emiliano César Cayetano; et al.; Optimization of the classical oral cancerization protocol in hamster to study oral cancer therapy; Wiley Blackwell Publishing, Inc; Oral Diseases; 26; 6; 9-2020; 1-27
Santa Cruz, Iara Sofía; Garabalino, Marcela Alejandra; Trivillin, Verónica Andrea; Itoiz, María Elina; Pozzi, Emiliano César Cayetano; et al.; Optimization of the classical oral cancerization protocol in hamster to study oral cancer therapy; Wiley Blackwell Publishing, Inc; Oral Diseases; 26; 6; 9-2020; 1-27
1354-523X
1354-523X
1601-0825
1601-0825
CONICET Digital
CONICET
Autor
Santa Cruz, Iara Sofía
Santa Cruz, Iara Sofía
Garabalino, Marcela Alejandra
Garabalino, Marcela Alejandra
Trivillin, Verónica Andrea
Trivillin, Verónica Andrea
Itoiz, María Elina
Itoiz, María Elina
Pozzi, Emiliano César Cayetano
Pozzi, Emiliano César Cayetano
Thorp, Silvia Inés
Thorp, Silvia Inés
Curotto, Paula
Curotto, Paula
Guidobono, Juan Santiago
Guidobono, Juan Santiago
Heber, Elisa Mercedes
Heber, Elisa Mercedes
Nigg, David W.
Nigg, David W.
Schwint, Amanda Elena
Schwint, Amanda Elena
Monti Hughes, Andrea
Monti Hughes, Andrea
Resumen
Objective(s): The hamster carcinogenesis model recapitulates oral oncogenesis. Dimethylbenz[a]anthracene (DMBA) cancerization induces early severe mucositis, affecting animal's welfare and causing tissue loss and pouch shortening. “Short” pouches cannot be everted for local irradiation for boron neutron capture therapy (BNCT). Our aim was to optimize the DMBA classical cancerization protocol to avoid severe mucositis, without affecting tumor development. We evaluated BNCT in animals cancerized with this novel protocol. Materials and methods: We studied: Classical cancerization protocol (24 applications) and Classical with two interruptions (completed at the end of the cancerization protocol). BNCT mediated by boronophenylalanine (BPA) was performed in both groups. Results: The twice-interrupted group exhibited a significantly lower percentage of animals with severe mucositis versus the non-interrupted group (17% versus 71%) and a significantly higher incidence of long pouches (100% versus 53%). Tumor development and the histologic characteristics of tumor and precancerous tissue were not affected by the interruptions. For both groups, overall tumor response was more than 80%, with a similar incidence of BNCT-induced severe mucositis. Conclusion(s): The twice-interrupted protocol reduced severe mucositis during cancerization without affecting tumor development. This favored the animal's welfare and reduced the number of animals to be cancerized for our studies, without affecting BNCT response. Objective(s): The hamster carcinogenesis model recapitulates oral oncogenesis. Dimethylbenz[a]anthracene (DMBA) cancerization induces early severe mucositis, affecting animal's welfare and causing tissue loss and pouch shortening. “Short” pouches cannot be everted for local irradiation for boron neutron capture therapy (BNCT). Our aim was to optimize the DMBA classical cancerization protocol to avoid severe mucositis, without affecting tumor development. We evaluated BNCT in animals cancerized with this novel protocol. Materials and methods: We studied: Classical cancerization protocol (24 applications) and Classical with two interruptions (completed at the end of the cancerization protocol). BNCT mediated by boronophenylalanine (BPA) was performed in both groups. Results: The twice-interrupted group exhibited a significantly lower percentage of animals with severe mucositis versus the non-interrupted group (17% versus 71%) and a significantly higher incidence of long pouches (100% versus 53%). Tumor development and the histologic characteristics of tumor and precancerous tissue were not affected by the interruptions. For both groups, overall tumor response was more than 80%, with a similar incidence of BNCT-induced severe mucositis. Conclusion(s): The twice-interrupted protocol reduced severe mucositis during cancerization without affecting tumor development. This favored the animal's welfare and reduced the number of animals to be cancerized for our studies, without affecting BNCT response.
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