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- W2077102533 abstract "This study was designed to assess monoclonal antibodies (MAbs) directed against tumor necrosis factor-α (TNF-α) (anti-TNF) or interleukin-8 (anti-IL-8) as radioactive agents for the detection of Staphylococcus aureus- or Klebsiella pneumoniae-infected thighs in mice. At 5 min (acute infection) or 20 h (established) post-infection, 20 μg of the 99mTc-labeled MAbs were injected. At various time intervals, the accumulation of the radiotracer in the infected thighs was assessed and expressed as a target-to-nontarget (TNT) ratio. The binding of 99mTc-labeled MAbs to circulating mononuclear cells and granulocytes was quantitated 20 h after injection. The pharmacokinetics of the MAbs, in relation to the control agents 99mTc-labeled polyclonal human immunoglobulin (IgG) and a 99mTc-labeled nonspecific IgG1 MAb, were also studied. In acute infections, 99mTc-anti-TNF accumulated to a higher extent (p < 0.05) in S. aureus-infected thighs in mice until 4 h after the injection than 99mTc-IgG and was higher at 0.25 h in K. pneumoniae-infected mice (p < 0.03) compared with 99mTc-IgG. In established S. aureus and K. pneumoniae infections, 99mTc-anti-IL-8 detected the infection more intensely than 99mTc-IgG until 1 h after injection. In both S. aureus and K. pneumoniae infections, localization of sites of infection correlates (p < 0.05) with increased binding of the 99mTc-labeled MAbs to granulocytes and mononuclear cells in both acute and established infections. It was concluded that 99mTc-labeled MAbs, directed against TNF-α and IL-8, accumulate in bacterial infections in mice to a higher extent than does 99mTc-IgG after infection and is related to the binding of the antibodies to blood leukocytes. With these 99mTc-labeled MAbs, information might be gained about the development of an infection." @default.
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- W2077102533 title "Detection of experimental infections with 99mTc-labeled monoclonal antibodies against TNF-α and interleukin-8" @default.
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- W2077102533 doi "https://doi.org/10.1016/s0969-8051(97)00118-2" @default.
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