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- W2336097215 abstract "Background Infections are common following stroke and associated with worse outcome. Using an animal model of pneumonia, we assessed the effect of infection and its treatment on the immune response and stroke outcome. Methods Lewis rats were subjected to transient cerebral ischemia and survived for 4 weeks. One day after stroke animals were exposed to aerosolized Staphylococcus aureus, Pseudomonas aeruginosa or saline. Antibiotics (ceftiofur or enrofloxacin) were started immediately after exposure or delayed for 3 days. Behavioral tests were performed weekly. ELISPOT assays were done on lymphocytes from spleen and brain to assess autoimmune responses to myelin basic protein (MBP). Results Among animals that received immediate antibiotic therapy, infection was associated with worse outcome in ceftiofur but not enrofloxacin treated animals. (The outcome with immediate enrofloxacin therapy was so impaired that further worsening may have been difficult to detect.) A delay in antibiotic therapy was associated with better outcomes in both ceftiofur and enrofloxacin treated animals. Infection was associated with an increased likelihood of developing Th1(+) responses to MBP in non-infarcted brain (OR = 2.94 [1.07, 8.12]; P = 0.04), and Th1(+) responses to MBP in spleen and non-infarcted brain were independently associated with a decreased likelihood of stroke recovery (OR = 0.16 [0.05, 0.51; P = 0.002 and OR = 0.32 [0.12, 0.84]; P = 0.02, respectively). Conclusions Infection worsens stroke outcome in ceftiofur treated animals and increases Th1 responses to MBP. These data may help explain how infection worsens stroke outcome and suggest that treatment of infection may contribute to this outcome." @default.
- W2336097215 created "2016-06-24" @default.
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- W2336097215 date "2016-06-01" @default.
- W2336097215 modified "2023-09-29" @default.
- W2336097215 title "The contribution of antibiotics, pneumonia and the immune response to stroke outcome" @default.
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- W2336097215 doi "https://doi.org/10.1016/j.jneuroim.2016.04.005" @default.
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