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Title: Echeandia novogaliciana and E. crudeniana (Anthericaceae): Two new species from western Mexico
Author: Viveros-Paredes, J.M.
Puebla-Perez, A.M.
Gutierrez-Coronado, O.
Sandoval-Ramirez, L.
Villasenor-García, M.M.
Issue Date: 2006
Abstract: Hypothalamic-pituitary-adrenal (HPA) axis activation-induced immunosuppression is associated with increased concentration of circulating corticosterone and impaired cellular immune responses. The purpose of this study was to investigate the effect of chronic HPA axis activation on the cellular immune response, Th1/Th2 cytokine profile, and concentration of corticosterone. Mice were divided into two groups: a control group comprised of healthy, untreated mice that received no stress, and an HPA axis-activated group that received stress through electric shock (ES). The delayed-type hypersensitivity reaction to dinitrofluorobenzene, splenocyte proliferative response to mitogens Concanavalin A and lipopolysaccharide, Th1 and Th2 profile, and TGF-?1 production were measured in plasma and in culture supernatants. The corticosterone concentration was also measured in plasma. In the ES group, elevated plasma corticosterone concentration was associated with immunosuppression and a significant decrease in plasma concentrations of IL-2, IL-4, and TGF-?1. In vitro IL-2 production in response to Con A was significantly lower in the ES group than in the control group. TGF-?1 production in nonstimulated and stimulated cultures in response to either mitogen was significantly lower in the ES group than in the control group. Plasma concentrations of IFN-? and IL-10 did not differ significantly between groups. The concentrations of IFN-?, IL-4, and IL-10 in the supernatants of splenocytes stimulated with either mitogen and IL-4 production by nonstimulated cells were significantly higher in the ES group than in the control group. These results suggest that corticosterone mediates the immunosuppression induced by HPA axis activation, and induces dysregulation of the Th1/Th2 cytokine profile. " 2005 Elsevier B.V. All rights reserved.",,,,,,"10.1016/j.intimp.2005.11.011",,,"","",,,,,,"5",,"International Immunopharmacology",,"774
WOS",,,,,,"Corticosterone; HPA axis; Immunosuppression; Stress; Th1/Th2 cytokines",,,,,,"Dysregulation of the Th1/Th2 cytokine profile is associated with immunosuppression induced by hypothalamic-pituitary-adrenal axis activation in mice",,"Article" "39603","123456789/35008",,"Meléndez Zermeño, Flavio Universidad de Guadalajara",,"Meléndez Zermeño, Flavio Universidad de Guadalajara",,"2004",,,,,,,,,,"1405-7980","","",,"Español",,,,"1",,"Investigación en Salud (Universidad de Guadalajara)",,"43-49",,"6",,"PERIODICA",,,,,,,,"Psicoanálisis",,,"La inexistencia de la psicogénesis","La inexistencia de la psicogénesis: el gran secreto del psicoanálisis",,"journalArticle" "42627","123456789/35008",,"Rodríguez, A., Departamento de Botánica y Zoología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Apartado Postal 1-139, 45101 Zapopan, Jalisco, Mexico; Ortiz-Catedral, L., Ecology and Conservation Laboratory, Institute of Natural Sciences, Massey University, North Shore Mail Centre, Private Bag 103 904, Auckland, New Zealand",,"Rodriguez, A.
Ortiz-Catedral, L.",,"2013",,"Echeandia novogaliciana and E. crudeniana are described from western Mexico. Echeandia novogaliciana is known from three populations, one in the state of Nayarit and two in Zacatecas. Likewise, E. crudeniana is known from two populations in the municipality of Bahía de Banderas, Nayarit. For both species, illustrations are provided and morphological relationships with similar species are discussed. " The New York Botanical Garden.
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