Antitumor Effect of Epigallocatechin Gallate and Vincristine in Mice with L5178Y Lymphoma

The main objective of research into new therapies is the search for more efficacy and fewer toxic effects in cancer treatments. On one hand, vincristine (VCR) is a chemotherapeutic used in different kinds of tumors. On the other hand, epigallocatechin gallate (EGCG) is a green tea metabolite that has shown an antineoplastic effect in diverse investigations, so the objective of this work is to evaluate the antitumor effects of the EGCG/VCR combination on tumor volume and survival. To achieve this objective, the solid model of lymphoma L5178Y was used in BALB/c mice with different doses of VCR, EGCG, and their combination allowed tumor growth and survival time recording. After tumor collection, measurements, and immunohistochemistry for p53, Bcl2, and Cyclin D1 were performed. The results showed that the EGCG/vincristine combination had a greater antitumor effect than those effects of vincristine and EGCG. It can be attributed to the fact that the greatest inhibition of Bcl2 was present in gathering of EGCG harvest with vincristine. Therefore, the combination of EGCG with vincristine has a better antineoplastic effect by inhibiting tumor development and increasing survival on both substances independently.

[Description of chagas disease in the Valle de Iguala, Guerrero state, Mexico- Marco]

There are reports regarding the presence of triatomine vectors of Trypanosoma cruzi, the causal agent of Chagas' disease, and infected individuals on the coast and zones south of the State of Guerrero, Mexico. Nonetheless, there are no completed reports in the Valley of Iguala. To know with greater precision endemic zones, seropositive individuals and their health condition, T. cruzi-infected triatomines and characteristics of dwellings were studied. Seroprevalence was 1.8% by indirect ELISA and latex agglutination techniques were carried out in serum of 450 individuals of three municipalities of the Valley of Iguala. We reported presence of triatomine and conditions of dwellings. Of 71 triatomines collected, 38.2% were infected with T. cruzi. Triatoma pallidipennis was the only triatomine species found. No seropositive persons presented intestinal, or cardiac problems. The greatest percentage of infected triatomines was observed in rural zones as compared to urban. Results suggest considerable risk of infection in the Valley of Iguala but studies regarding the infectivity capacity of T. cruzi strains are required.