Abstract.
We have identified ligands for cell labelling with indium-111: 3-hydroxy-6-propoxymethyl-4H-pyran-4-one and 6-butoxymethyl-3-hydroxy-4H-pyran-4-one. The leucocyte labelling efficiencies of 111In complexes of these ligands were higher and label stabilities were found to be similar compared with those obtained using 111In-tropolonate. High labelling efficiencies of neutrophils and lymphocytes were achieved with 111In complexes of pyranones. Tropolone was found to have a greater inhibitory effect on metalloenzymes and to cause greater impairment of platelet function than 3-hydroxy-6-propoxymethyl-4H-pyran-4-one. Thus 6-alkoxymethyl-3-hydroxy-4H-pyran-4-ones may have advantages over current ligands used in cell labelling with 111In.
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Received 8 December 1998 and in revised form 25 June 1999
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Ellis, B., Sampson, C., Abeysinghe, R. et al. 6-Alkoxymethyl-3-hydroxy-4H-pyranones: potential ligands for cell-labelling with indium. Eur J Nucl Med 26, 1400–1406 (1999). https://doi.org/10.1007/s002590050471
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DOI: https://doi.org/10.1007/s002590050471