Authors:Jin-Hwan Kim, Sun-Ju Choi, and Young-Don Hong
The organometallic precursor of fac-[99mTc(CO)3(H2O)3]+ has attracted much attention because of the robustness and small size of Tc(I)-tricarbonyl complexes compared to Tc(V) complexes
and the good labeling affinity with a variety of donor atoms. Among various ligand systems, an iminodiacetic acid (IDA) was
proven as a good chelating group to form a Tc(III)-compelx as well as has been shown its potential as a chelating system for
fac-[99mTc(CO)3] precursor. In an attempt to confirm the similarity and the difference between 99mTc(CO)3-IDA and 99mTc-(IDA)2-complex, M(CO)3-IDA (M = 99mTc, Re) complexes of disofenin, mebrofenin and N-(3-iodo-2,4,6-trimethyl phenylcarbamoylmethyl) iminodiacetic acid were prepared, and the biological evaluation of 99mTc(CO)3-disofenin was performed. The 99mTc(CO)3-IDA complexes were prepared with a high radiolabeling yield (>98%) in a quantitative manner and showed a negative charge.
The in vivo pharmacokinetic behavior of 99mTc(CO)3-disofenin showed a similar biological activity to 99mTc-(disofenin)2 in that those complexes were quickly cleared from the blood by the hepatocytes and excreted into the gallbladder and intestine.
Accordingly, the 99mTc(CO)3-IDA derivatives of disofenin and mebrofenin might be used as hepatobiliary imaging agents. Since an IDA is a promising chelator
for 99mTc-based radiopharmaceutical and the biological properties of 99mTc(CO)3-IDA derivative shows similar to that of 99mTc-complex, a biomolecule containing IDA can be freely radiolabeled with fac-[99mTc(CO)3]-precursor or 99mTc. However, the radiolabeling efficiency and the biological behavior demonstrates the favorable properties of 99mTc(CO)3-IDA compound for the development of a new imaging agent.
Authors:, Budapest, Üllői út
78., 1082, Csilla András, Péter Bartek, István Battyáni, János Bezsilla, György Bodoky, Barna Bogner, Attila Bursics, Tibor Csőszi, László Damjanovich, Magdolna Dank, Zsófia Dankovics, Pál Ákos Deák, Kristóf Dede, Attila Doros, Ibolyka Dudás, Tamás Györke, Oszkár Hahn, Erika Hartmann, Erika Hitre, Zsolt Horváth, Marianna Imre, Károly Kalmár Nagy, Zsolt Káposztás, László Kóbori, Péter Kupcsulik, László Landherr, Zoltán Lóderer, László Mangel, Zoltán Máthé, Tamás Mersich, Klára Mezei, Elemér Mohos, Attila Oláh, Péter Pajor, András Palkó, Zsuzsanna Pápai, András Papp, Mihály Patyánik, András Petri, János Révész, Ágnes Ruzsa, Krisztina Schlachter, László Sikorszki, István Sipőcz, Eszter Székely, Attila Szijártó, László Torday, Lajos Barna Tóth, Edit Dósa, László Harsányi, Gábor István, László Landherr, György Lázár, József Lövey, Zsuzsa Schaff, Ákos Szűcs, and András Vereczkei
function on 99mTc-mebrofenin hepatobiliary scintigraphy: can
this tool predict post-hepatectomy liver failure? HPB (Oxford) 2016; 18:
Schroeder RA, Marroquin CE, Bute BP