MR molecular imaging of thrombus: development and application of a Gd-based novel contrast agent targeting to P-selectin.
Clin Appl Thromb Hemost
; 16(2): 177-83, 2010 Apr.
Article
in En
| MEDLINE
| ID: mdl-19141485
ABSTRACT
Molecular imaging of thrombus formation at initial stage requires a robust thrombus-specific contrast agent with high sensitivity. In this study, we report a novel P-selectin-targeted paramagnetic molecular imaging agent and the agent's potential to sensitively detect occult microthrombi on the intimal surface of endothelium. Platelet clots and blood clots targeted in vitro with paramagnetic nanoparticles presented a highly detectable, homogeneous T1-weighted contrast enhancement that was improved with increasing gadolinium level. In vivo contrast enhancement under part of circulation conditions was assessed in dogs. The micro-thrombi around the femoral vein of dog demonstrated higher signal intensities than the control clots and the adjacent muscle. Histology was performed on regions likely to contain thrombus as indicated by MRI. These results suggest that molecular imaging of P-selectin-targeted paramagnetic nanoparticles can provide sensitive detection and localization of P-selectin and may allow for early, direct identification of microthrombi, leading to early diagnosis.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Serum Albumin, Bovine
/
Magnetic Resonance Imaging
/
Immunoconjugates
/
P-Selectin
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Contrast Media
/
Gadolinium DTPA
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Venous Thrombosis
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Imaging, Three-Dimensional
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Nanoparticles
/
Molecular Imaging
Type of study:
Screening_studies
Limits:
Animals
Language:
En
Journal:
Clin Appl Thromb Hemost
Journal subject:
ANGIOLOGIA
Year:
2010
Document type:
Article