alexa Imaging of human infection with (131)I-labeled recombinant human interleukin-8.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Gross MD, Shapiro B, Fig LM, Steventon R, Skinner RW,

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Abstract The chemotactic cytokine interleukin-8 (IL-8) plays an important role in attraction and activation of polymorphonuclear leukocytes in infection and inflammation. A pilot study was conducted to determine if radiolabeled IL-8 would depict infection in humans. METHODS: Human recombinant IL-8 (rhIL-8) labeled with (131)I (specific activity, 0.4-0.7 MBq [11-18 microCi] (131)I/microg IL-8) was injected intravenously into 8 diabetic patients with active foot infections and evidence of osteomyelitis, 2 patients with successfully treated osteomyelitis, and 1 patient with cellulitis of the thumb. RESULTS: Focal accumulation of (131)I-rhIL-8 was seen in 8 of 8 patients with active foot infection and diffuse uptake was seen in the thumb of the 1 patient with cellulitis. In the 2 patients with successfully treated bone infection, multiphase (99m)Tc-hydroxyethylene diphosphonate bone scans were negative early, but late-phase (>3 h) uptake depicted degenerative lesions that did not image with (131)I-rhIL-8. CONCLUSION: (131)I-rhIL-8 accumulates rapidly within infected foci in osteomyelitis and cellulitis but not in successfully treated infections or degenerative joint disease.
This article was published in J Nucl Med and referenced in Journal of Clinical & Cellular Immunology

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