The effects of Chlorella vulgaris in the protection of mice infected with Listeria monocytogenes. Role of natural killer cells
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Data
1999-09-07
Autores
Dantas, Denise C. M.
Kaneno, Ramon [UNESP]
Queiroz, Mary L. S.
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Resumo
In this work we have demonstrated the effects of oral administration of Chlorella vulgaris (CV) on Natural Killer cells (NK) activity of mice infected with a sublethal dose of viable Listeria monocytogenes. The treatment with C. vulgaris produced a significant increase on NK cells activity in normal (non-infected) animals compared to the animals that received only vehicle (water) (p < 0.0001). Similarly, the infection alone produced a significant increase on NK cells activity, which was observed at 48 and 72 hours after the inoculation of L. monocytogenes. Moreover, when CV was administered in infected animals, there was an additional increase in NK cells activity which was significantly higher than that found in the infected groups (p < 0.0001) CV treatment (50 and 500mg/Kg) of mice infected with a dose of 3x105 bacteria/animal, which was lethal for all the non- treated controls, produced a dose-response protection which led to a 20% and 55% survival, respectively (p < 0.0001).
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Palavras-chave
plant extract, animal cell, animal model, chlorella, controlled study, dose response, effector cell, green alga, host resistance, infection resistance, listeria monocytogenes, listeriosis, mouse, natural killer cell, nonhuman, oral drug administration, priority journal, Animals, Chlorella, Killer Cells, Natural, Listeria Infections, Male, Mice, Mice, Inbred BALB C, algae, Animalia, Chlorella vulgaris, Chlorophyta, Listeria monocytogenes, listeriosis monocytogenes
Como citar
Immunopharmacology and Immunotoxicology, v. 21, n. 3, p. 609-619, 1999.