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1.
Afr J Tradit Complement Altern Med ; 10(3): 397-404, 2013.
Article in English | MEDLINE | ID: mdl-24146465

ABSTRACT

Lophocereus schottii is a Mexican cactus known as garambullo whose bark is used for the treatment of cancer, diabetes, ulcers, sores, stomach disorders and tuberculosis. The aim of this study was to evaluate the cytotoxic effect of the ethanolic extract of bark of L. Schottii. To assess these effects we established a flow of experiments in a model of BALB/c mice murine lymphoma. We value first survival of mice inoculated with 2 × 10(4) L5178Y murine lymphoma cells, orally treated with 10 mg/Kg of the extract for 10 consecutive days; the second assessment was to determine the influence of the immune system, we carry out studies of lymphoproliferation in mice with the same conditions of the previous study, only that the treatment was for 22 days before the completion cell cultures; the third study was to establish the cytotoxic effect of extract of L. schottii using different concentrations, by murine lymphoma cell cultures and splenocytes from healthy mice and finally we assessed the effect in vivo of extract of L. Schottii in a model of solid murine lymphoma inoculating 1 × 10(7) lymphoma cells in the gastrocnemius muscle observing the development of the tumor. We observed that oral treatment of 10 mg/kg of extract of L. schottii increased survival rate in treated mice; additionally, an intratumoral injection of 50 and 100 mg/kg in a solid murine lymphoma located in the gastrocnemius muscle, allowed a significantly slower tumor evolution. In vitro studies determined that extract inhibited 63% of lymphoma cell growth. With these evidences it is feasible to scientifically validate that ethanolic extract of L. schottii had an effect on L5178Y murine cells lymphoma and could have the same effect in human tumors.


Subject(s)
Antineoplastic Agents, Phytogenic/therapeutic use , Cactaceae , Lymphoma/drug therapy , Phytotherapy , Plant Extracts/therapeutic use , Animals , Antineoplastic Agents, Phytogenic/pharmacology , Cell Line, Tumor , Disease Models, Animal , Injections, Intralesional , Male , Mexico , Mice, Inbred BALB C , Muscle, Skeletal , Plant Bark , Plant Extracts/pharmacology
2.
Interciencia ; 33(5): 384-388, mayo 2008. graf
Article in English | LILACS | ID: lil-493201

ABSTRACT

En células normales y tumorales las poliaminas (Pas) putresina (Pu), espermidina (Spd) y espermina (Spm) son requeridas en múltiples funciones fundamentales del ciclo celular. Altos niveles de Pas han sido reportados en varios tipos de cáncer, por lo que han sido propuestas como biomarcadores del desarrollo tumoral. En el presente trabajo se reporta su utilidad como biomarcadores de la evolución del linfoma murino L5178Y en diferentes fluidos, células y tejidos. Los hallazgos también fueron aplicados al seguimiento del efecto antitumoral de Bursera fagaroides, ya reportado previamente. Se utilizó cromatografía de intercambio iónico para determinar los niveles de Pas en orina, células peritoneales linfocitos circulantes, esplenocitos, mesotelio e hígado de ratones BALB/c a los 10, 17 y 24 días de evolución del tumor y de ratones tratados con el exacto hidroalcohólico de la corteza de B. fagaroides administrado por vía oral o intaperitonealmente (i.p) los niveles urinarios de Spd no fueron detectables, mientras que el incremento de Pu en orina es el mejor biomarcador del crecimiento del linfoma. Además los niveles urinarios de Pu disminuyeron significativamente en ratones tratados intraperitonealmente con B. fagoroides, lo cual refuerza resultados anteriores. En este modelo la variación de los niveles urinarios de Pu es un biomarcador efectivo del desarrollo neoplástico, dado que permite seguir la evolución del linfoma L5178Y. Además, proporciona una herramienta para estudiar in vivo, el efecto antitumoral de B. fagaroides y de otros fármacos.


Subject(s)
Animals , Mice , Bursera , Lymphoma , Biomarkers , Polyamines , Biology , Medical Oncology , Venezuela
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