| Literature DB >> 7735171 |
G Vaidyanathan1, M R Zalutsky.
Abstract
No-carrier-added [123I]MIBG was prepared from 3-(trimethylsilyl)benzylguanidine in 80-90% yield. Binding of this tracer to SK-N-SH human neuroblastoma cells maintained a constant level of > 50% over 2-3 log activity range. In comparison, the binding of [123I]MIBG prepared by isotopic exchange steadily decreased with dose. Biodistribution studies in normal mice demonstrated maximal concentrations in heart and adrenals for both preparations. In heart, significant 1.5-3.0 times higher levels (P < 0.05) were seen for the no-carrier-added preparation. Radiation dosimetry calculations suggest that the no-carrier-added preparation would increase the dose received by several tissues, most notably the heart where a 91% increase in dose is predicted.Entities:
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Year: 1995 PMID: 7735171 DOI: 10.1016/0969-8051(94)00078-x
Source DB: PubMed Journal: Nucl Med Biol ISSN: 0969-8051 Impact factor: 2.408