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Nucl Med Biol. 2001 Jan;28(1):75-84.

In vitro and in vivo evaluation of new radiolabeled neurotensin(8-13) analogues with high affinity for NT1 receptors.

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1
Paul Scherrer Institute, Centre for Radiopharmaceutical Science, Ch-5232 PSI, Villigen, Switzerland.

Abstract

The potential utility of neurotensin (NT) in cancer diagnosis and therapy is limited by its rapid degradation. New stabilized analogues were synthesized, labeled with [99mTc] and screened in vitro and in vivo. High affinity and rapid internalization were obtained in binding assays. Despite their longer human plasma half-lives, a rapid degradation was observed with low concentrations as used in biodistribution tests. The tumor uptake rates were rather low but tumor/blood ratios increased according to the stability raise.

PMID:
11182567
[Indexed for MEDLINE]
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