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19) Thus, a disturbed interaction of accessory cells and NK cells is involved in the impaired IFN-γ release in response to Pseudomonas in the lung of CLP mice.
* A disturbed interaction with accessory cells upon opportunistic infection with Pseudomonas aeruginosa contributes to an impaired IFN-γ production of NK cells in the lung during sepsis-induced immunosuppression.
- Impaired resistance to Pseudomonas aeruginosa-induced pneumonia after cecal ligation and puncture (CLP), a mouse model for human polymicrobial sepsis, is associated with decreased IFN-γ, but increased IL-10, levels in the lung. We investigated the so far unknown mechanisms underlying this reduced IFN-γ synthesis in CLP mice. CD11b(+) NK cells, but not T or NKT cells in the lung were impaired in IFN-γ synthesis upon challenge with Pseudomonas in vitro and in vivo after CLP. The inhibition of NK cells was independent of IL-10. IFN-γ synthesis of NK cells was only partly restored by addition of recombinant IL-12. Accessory cells including dendritic cells and alveolar macrophages were required for maximal IFN-γ secretion. But accessory cells of CLP mice suppressed the IFN-γ secretion from naive lung leukocytes. In turn, naive accessory cells were unable to restore the IFN-γ production from lung leukocytes of CLP mice. Thus, a disturbed interaction of accessory cells and NK cells is involved in the impaired IFN-γ release in response to Pseudomonas in the lung of CLP mice. Considering the importance of IFN-γ in the immune defense against bacteria the dysfunction of accessory cells and NK cells might contribute to the enhanced susceptibility to Pseudomonas after CLP.
=>反応, 応答, 返答, 返報, 反響, 答唱句
Overview of noun response
The noun response has 7 senses (first 5 from tagged texts)
1. (11) response -- (a result; "this situation developed in response to events in Africa")
2. (11) reaction, response -- (a bodily process occurring due to the effect of some antecedent
stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age")
3. (6) answer, reply, response -- (a statement (either spoken or written) that is made to reply to a
question or request or criticism or accusation; "I waited several days for his answer"; "he wrote
replies to several of his critics")
4. (4) reception, response -- (the manner in which something is greeted; "she did not expect the
cold reception she received from her superiors")
5. (1) response -- (a phrase recited or sung by the congregation following a versicle by the priest
or minister)
6. reply, response -- (the speech act of continuing a conversational exchange; "he growled his
reply")
7. response -- (the manner in which an electrical or mechanical device responds to an input signal
or a range of input signals)
--- WordNet end ---