Hematopoietic response of rats exposed to the impact of an acute psychophysiological stressor on responsiveness to an in vivo challenge with Listeria monocytogenes: modulation by Chlorella vulgaris prophylactic treatment

Brain, Behavior, and Immunity
Julia de Souza QueirozMary L S Queiroz

Abstract

In this study, we investigated the hematopoietic response of rats pretreated with CV and exposed to the impact of acute escapable, inescapable or psychogenical stress on responsiveness to an in vivo challenge with Listeria monocytogenes. No consistent changes were observed after exposure to escapable footshock. Conversely, the impact of uncontrollable stress (inescapable and psychogenical) was manifested by an early onset and increased severity and duration of myelossuppression produced by the infection. Small size CFU-GM colonies and increased numbers of clusters were observed, concurrently to a greater expansion in the more mature population of bone marrow granulocytes. No differences were observed between the responses of both uncontrollable stress regimens. CV prevented the myelossuppression caused by stress/infection due to increased numbers of CFU-GM in the bone marrow. Colonies of cells tightly packed, with a very condensed nucleus; in association with a greater expansion in the more immature population of bone marrow granulocytes were observed. Investigation of the production of colony-stimulating factors revealed increased colony-stimulating activity (CSA) in the serum of normal and infected/stressed rats treated with ...Continue Reading

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Citations

May 7, 2014·Evidence-based Complementary and Alternative Medicine : ECAM·Naoto NoguchiAkira Yamada
Dec 18, 2013·Life Sciences·Juliana Falcato VecinaMary Luci de Souza Queiroz
Aug 13, 2014·Journal of Neuroimmune Pharmacology : the Official Journal of the Society on NeuroImmune Pharmacology·V Ferraz-de-PaulaJ Palermo-Neto
Oct 19, 2010·International Immunopharmacology·Cristiane O TorelloMary L S Queiroz
Dec 19, 2012·Brain, Behavior, and Immunity·Julia de Souza QueirozJoão Palermo Neto
Aug 9, 2011·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Mary L S QueirozAndrana K Calgarotto
Feb 2, 2019·Animals : an Open Access Journal From MDPI·Maria Giovanna CilibertiMariangela Caroprese
Mar 19, 2014·International Journal of Food Sciences and Nutrition·Junya NagayamaMichiyoshi Miyahara

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