DNA damage and nitric oxide synthesis in experimentally infected Balb/c mice with Trypanosoma cruzi

This study aimed to evaluate whether experimental Chagas disease in acute phase under benznidazole therapy can cause DNA damage in peripheral blood, liver, heart, and spleen cells or induce nitric oxide synthesis in spleen cells. Twenty Balb/c mice were distributed into four groups: control (non-inf...

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Veröffentlicht in:Experimental parasitology 2007-07, Vol.116 (3), p.296-301
Hauptverfasser: Ribeiro, Daniel A., Calvi, Sueli A., Picka, Mariele M., Persi, Eliana, de Carvalho, Thaís B., Caetano, Priscila K., Nagoshi, Lidiana R., Lima, Carlos R.G., Machado, Jussara M., Salvadori, Daisy M.F.
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container_end_page 301
container_issue 3
container_start_page 296
container_title Experimental parasitology
container_volume 116
creator Ribeiro, Daniel A.
Calvi, Sueli A.
Picka, Mariele M.
Persi, Eliana
de Carvalho, Thaís B.
Caetano, Priscila K.
Nagoshi, Lidiana R.
Lima, Carlos R.G.
Machado, Jussara M.
Salvadori, Daisy M.F.
description This study aimed to evaluate whether experimental Chagas disease in acute phase under benznidazole therapy can cause DNA damage in peripheral blood, liver, heart, and spleen cells or induce nitric oxide synthesis in spleen cells. Twenty Balb/c mice were distributed into four groups: control (non-infected animals); Trypanosoma cruzi infected; T. cruzi infected and submitted to benznidazole therapy; and only treated with benznidazole. The results obtained with the single cell gel (comet) assay showed that T. cruzi was able induce DNA damage in heart cells of both benznidazole treated or untreated infected mice. Similarly, T. cruzi infected animals showed an increase of DNA lesions in spleen cells. Regarding nitric oxide synthesis, statistically significant differences ( p < 0.05) were observed in all experimental groups compared to negative control, the strongest effect observed in the T. cruzi infected group. Taken together, these results indicate that T. cruzi may increase the level of DNA damage in mice heart and spleen cells. Probably, nitric oxide plays an important role in DNA damaging whereas benznidazole was able to minimize induced T. cruzi genotoxic effects in spleen cells.
doi_str_mv 10.1016/j.exppara.2006.12.007
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Probably, nitric oxide plays an important role in DNA damaging whereas benznidazole was able to minimize induced T. cruzi genotoxic effects in spleen cells.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Blood Cells - pathology</subject><subject>Chagas disease</subject><subject>Chagas Disease - complications</subject><subject>Chagas Disease - drug therapy</subject><subject>Chagas Disease - genetics</subject><subject>Chagas Disease - metabolism</subject><subject>DNA Damage</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Life cycle. Host-agent relationship. 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subjects Animals
Biological and medical sciences
Blood Cells - pathology
Chagas disease
Chagas Disease - complications
Chagas Disease - drug therapy
Chagas Disease - genetics
Chagas Disease - metabolism
DNA Damage
Fundamental and applied biological sciences. Psychology
Life cycle. Host-agent relationship. Pathogenesis
Liver - cytology
Male
Mice
Mice, Inbred BALB C
Myocardium - cytology
Neoplasms - etiology
Nitric oxide
Nitric Oxide - biosynthesis
Nitroimidazoles - therapeutic use
Protozoa
Random Allocation
Single cell gel (comet) assay
Spleen - cytology
Spleen - metabolism
Trypanocidal Agents - therapeutic use
Trypanosoma cruzi
Trypanosoma cruzi - pathogenicity
title DNA damage and nitric oxide synthesis in experimentally infected Balb/c mice with Trypanosoma cruzi
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