Imaging Pulmonary Foreign Body Reaction Using [¹²⁵I]iodo-DPA-713 SPECT/CT in Mice.

ABSTRACT:

Purpose

Foreign body reactions elicit granulomatous inflammation composed of reactive macrophages. We hypothesized that [¹²⁵I]iodo-DPA-713 single-photon emission computed tomography (SPECT), a low-molecular-weight pyrazolopyrimidine ligand selectively trapped by phagocytes, could be used to detect foreign body reactions in a murine model.

Procedures

C57BL/6 mice intratracheally inoculated with dextran beads, which developed foreign body lesions, were imaged after injection of [¹²⁵I]iodo-DPA-713 or DPA-713-IRDye800CW using SPECT and optical imaging, respectively.

Results

Foreign body lesions were clearly observed in the lungs of the dextran-treated mice on computer tomography imaging and demonstrated significantly higher [¹²⁵I]iodo-DPA-

SUBMITTER: Sanchez-Bautista J 

PROVIDER: S-EPMC6326897 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature