Targeted magnetic resonance imaging with intraperitoneal and intravenous streptavidin (SA)-DTPA-Gd: a comparative study in tumor-bearing nude mice / 南方医科大学学报
Journal of Southern Medical University
;
(12): 139-143, 2006.
Article
in English
| WPRIM
| ID: wpr-234176
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of streptavidin (SA)-DTPA-Gd after intraperitoneal and intravenous administration for tumor enhancement in targeted magnetic resonance imaging (MRI).</p><p><b>METHODS</b>Biotinylated monoclonal antibody CL3 (600 microg) was intravenously injected into 12 BALB/c nude mice with subcutaneous inoculation of LoVo cells, followed by administration of 80 microg avidin as the chaser 24 h later and then SA-DTPA-Gd was injected intravenously or intraperitoneally after another 30 min. MRI was performed before and 20, 60 min and 3, 6, 9, 12 h after the injection of the contrast agents, and the MR signal intensity of the tumor and liver was determined.</p><p><b>RESULT</b>The maximum enhancement ratio of the tumor was 70.2% in the intravenous injection group and 46.4% in the intraperitoneal group, showing significant difference between them. The maximal enhancement rate of the liver was 23.7% in the intraperitoneal group and 20.4% in the intravenous group, showing no significant difference.</p><p><b>CONCLUSION</b>MR targeted imaging with biotinylated monoclonal antibody CL3 and SA-DTPA-Gd has specific enhancement effect. Higher blood level of SA-DTPA-Gd in the intravenous group facilitates the tumor enhancement in MRI in subcutaneous tumor model.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Transplantation, Heterologous
/
Magnetic Resonance Imaging
/
Pharmacokinetics
/
Colorectal Neoplasms
/
Adenocarcinoma
/
Reproducibility of Results
/
Sensitivity and Specificity
/
Contrast Media
/
Gadolinium DTPA
/
Streptavidin
Type of study:
Diagnostic study
/
Prognostic study
Limits:
Animals
/
Humans
Language:
English
Journal:
Journal of Southern Medical University
Year:
2006
Type:
Article
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