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2771. Cellular immune response of the Asian corn borer, Ostrinia furnacalis (Lepidoptera: Pyralidae), to infection by the entomopathogenic fungus, Beauveria bassiana

Creator:: Shen, Dongxu, Li, Miao, Chu, Yuan, Lang, Minglin, and An, Chunju
Format:: print, počítač, and online zdroj
Type:: article, články, journal articles, model:article, and TEXT
Subject:: Zoologie, motýli, zavíječovití, fagocytóza, butterflies, Pyralidae, phagocytosis, Lepidoptera, Ostrinia furnacalis, cellular immune response, haemocyte, nodulation, Beauveria bassiana, entomopathogenic fungus, 2, and 59
Language:: English
Description:: The term cellular immune response refers to haemocyte-mediated responses, including phagocytosis, nodulation, and encapsulation. In the present study, we identified five types of circulating haemocytes in larvae of the haemolymph of the Asian corn borer, Ostrinia furnacalis (Guenée), including granulocytes, oenocytoids, plasmatocytes, prohaemocytes, and spherulocytes. The relative number of total free haemocytes per larva decreased significantly 0.5, 24, and 36 h after the injection of Beauveria bassiana conidia. Upon conidia challenge, both phagocytosis and nodulation were observed in the collected haemolymph from O. furnacalis larvae. In addition, plasma was found to be necessary for both phagocytosis and nodulation. Therefore, we here confirm that phagocytosis and nodulation are involved in O. funacalis larvae during their fight against infection by B. bassiana, and further, that the cellular immune response of O. furnacalis helps eliminate the invading organisms despite the fact that not all the fungal conidia are killed., Dongxu Shen, Miao Li, Yuan Chu, Minglin Lang, Chunju An., and Obsahuje bibliografii
Rights:: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2772. Cellular responses to egg-oil (charismon©)

Creator:: Bereiter-Hahn, Jürgen, Bernd, August, Beschmann, Heike, Eberle, Irina, Kippenberger, Stefan, Rossberg, Maila, Strecker, Valentina, and Zöller, Nadja
Format:: print, text, and regular print
Type:: model:article, article, Text, časopisecké články, and TEXT
Subject:: zvířata, apoptóza--účinky léků, buněčné linie, pohyb buněk--účinky léků, proliferace buněk--účinky léků, buněčné dýchání--účinky léků, buňky kultivované, kur domácí, cytokiny--metabolismus, vejce, epidermis--cytologie, lidé, membránový potenciál mitochondrií--účinky léků, oleje--chemie--farmakologie, reaktivní formy kyslíku--metabolismus, sluneční spáleniny--farmakoterapie, and hojení ran--účinky léků
Language:: English
Description:: Egg-oil (Charismon©) is known for its beneficial action in wound healing and other skin irritancies and its antibacterial activity. The physiological basis for these actions has been investigated using cells in culture: HaCaT-cells (immortalized human keratinocytes), human endothelial cells in culture (HUVEC), peripheral blood mononuclear lymphocytes (PBML) and a full thickness human skin model (FTSM). Emphasis was on the influence of egg-oil on cell migration and IL-8 production in HaCaT cells, respiration, mitochondrial membrane potential, reactive oxygen (ROS)production and proliferation in HUVEC and HaCaT cells, cytokine and interleukin production in PBML and UV-light induced damage of FTSM. IL-8 production by HaCaT cells is stimulated by egg-oil whilst in phythemagglutinin-activated PBMLs production of the interleukins IL-2, IL-6, IL-10 and IFN-γ and TFN-α is reduced. ROS-production after H<sub>2</sub>O<sub>2</sub> stimulation first is enhanced but later on reduced. Respiration becomes activated due to partial uncoupling of the mitochondrial respiratory chain and proliferation of HaCaT and HUVEC is reduced. Recovery of human epidermis cells in FTSM after UV-irradiation is strongly supported by egg-oil. These results support the view that egg-oil acts through reduction of inflammatory processes and ROS production. Both these processes are equally important in cellular aging as in healing of chronic wounds. and J. Bereiter-Hahn, A. Bernd, H. Beschmann, I. Eberle, S. Kippenberger, M. Rossberg, V. Strecker, N. Zöller
Rights:: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public