Targeting of vascular adhesion protein-1 by positron emission tomography visualizes sites of inflammation in Borrelia burgdorferi-infected mice

Autor: Riikka Siitonen, Annukka Pietikäinen, Heidi Liljenbäck, Meeri Käkelä, Mirva Söderström, Sirpa Jalkanen, Jukka Hytönen, Anne Roivainen
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Arthritis Research & Therapy, Vol 19, Iss 1, Pp 1-10 (2017)
Druh dokumentu: article
ISSN: 1478-6362
DOI: 10.1186/s13075-017-1460-4
Popis: Abstract Background In the present study, we sought to evaluate the feasibility of targeting vascular adhesion protein-1 (VAP-1) by positron emission tomography (PET) for the longitudinal quantitative assessment of Borrelia burgdorferi infection-induced inflammation in mice. Methods Mice with B. burgdorferi infection-induced arthritis were studied. During a 7-week follow-up period, the progression of arthritis was monitored weekly with 68Ga-DOTA-Siglec-9 PET/computed tomography (CT) and measurement of tibiotarsal joint swellings. A subgroup of infected mice was treated with ceftriaxone. Finally, histopathological assessment of joint inflammation was performed and VAP-1 expression in joints were determined. Results Explicit joint swelling and 68Ga-DOTA-Siglec-9 uptake could be demonstrated in the affected joints from B. burgdorferi-infected mice. By contrast, no obvious accumulation of 68Ga-DOTA-Siglec-9 was detected in joints of uninfected mice. The maximum swelling and highest uptake in the affected joints were observed 4 weeks after the infection. 68Ga-DOTA-Siglec-9 uptake in joints correlated with joint swelling (P
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