We analyzed biodistribution of 68Ga-labeled hydroxyethylidenediphosphonic acid (68Ga-HEDP) and diethylenetriaminepentakis(methylenephosphonic acid) (68Ga-DTPMP) in Wistar rats with experimental model of bone callus. It was shown that the content of 68Ga-DTPMP and 68Ga-HEDP in bone callus was ~1.5-fold higher than in intact femur. 68Ga-DTPMP was characterized by higher stability in vivo, higher uptake in the bone tissue, and lower uptake in others visceral organs in comparison with 68Ga-HEDP. Thus, 68Ga-DTPMP had more suitable pharmacokinetic properties than 68Ga-HEDP.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 169, No. 5, pp. 573-577, May, 2020
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Tishchenko, V.K., Petriev, V.M., Kuzenkova, K.A. et al. A Comparative Study of the Pharmacokinetics of Bis- and Pentaphosphonic Acids Labeled with Gallium-68 in Rats with Experimental Model of Bone Callus. Bull Exp Biol Med 169, 644–647 (2020). https://doi.org/10.1007/s10517-020-04945-z
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DOI: https://doi.org/10.1007/s10517-020-04945-z