TY - JOUR TT - Practıcal Aspects of 68Ga-Labelled Dota-Peptides for Peptide-Receptor Radionuclide Therapy AU - Taşdelen, Betül PY - 2016 DA - December DO - 10.30931/jetas.297622 JF - Journal of Engineering Technology and Applied Sciences JO - JETAS PB - Muhammet KURULAY WT - DergiPark SN - 2548-0391 SP - 149 EP - 155 VL - 1 IS - 3 KW - 68Ga KW - DOTANOC KW - DOTATATE KW - peptides KW - PET N2 - 68Gallium-labeled receptor ligands, such as 68Gallium DOTATOC, 68Gallium-DOTANOC, and68Gallium-DOTATATE which are used in PET are becoming gold standard of 68Ga-labeled peptides.The 68Ga-labeled peptides show a rapid renal clearance and are rapidly accumulated in the tumors (80%within 30 minutes); concentration in tissues without expression of somatostatin receptors is low,providing higher contrast imaging. Here, this paper presents the practical aspects and the results ofpreparation and radiolabelling DOTA-peptides with TiO2-based commercially available 68Ge/68Gagenerator by using fully automated radiopharmaceutical synthesis device. The radiochemical purity(RCP) of 68Ga-labeled DOTA-peptides has been investigated using high performance liquidchromatography (HPLC) and instant thin layer chromatography (ITLC). The labeling procedure resultedin high radiochemical yield. The system allows the fully automated, efficient and rapid preparation of68Ga-DOTA-derivatized peptides. CR - [1] Hayes RL, Carlton JE, Byrd BL., “Bone scanning with gallium-68 a carrier effect.” J. Nucl. Med. 6 (1965): 605-610. CR - [2] Shealy, C.N., Aronow, S., Brownell, GL. “Gallium-68 as a scanning agent for intracranial lesions.” J. Nucl. Med. 5 (1964): 161-167. CR - [3] Deutsch, E., “Clinical PET: its time has come?” J. Med. 3 (1993):1132-1133. CR - [4] Rösch F., Knapp F.F. (Russ), Radionuclide Generators. in A Vértes, S Nagy, Z Klencsár, F Rösch (eds.), “Handbook of Nuclear Chemistry 4” Kluwer Academic Publishers, The Netherlands (2003): 81-118. CR - [5] Hofmann, M., Maecke, H., Börner, A.R., Weckesser, E., Schöffski, P., Oei, M.L., Schumacher, J., Henze, M., Heppeler, A., Meyer, G.J. and Knapp, W.H., “Biokinetics and imaging with the somatostatin receptor PET radioligand 68Ga-DOTATOC: preliminary data.” Eur. J. Nucl. Med. 28 (2001): 1751–1757. CR - [6] Wild, D., Schmitt, J.S., Ginj, M., Macke, H.R., Bernard, B.F., Krenning, E., “DOTA NOC, a high- affinity ligand of somatostation receptor subtypes 2, 3 and 5 for labeling with various radiometals.” Eur. J. Nucl. Med. Mol. Imag. 30 (2003): 1338-1347. CR - [7] Gabriel, M., Decristoforo, C., Kendler, D., Dobrozemsky, G., Heute, D., Uprimny, C., Kovacs, P., von Guggenberg, E., Bale R., and Virgolini, I.J., “68Ga-DOTA-Tyr3-Octreotide PET in neuroendocrine tumors: comparison with somatostatin receptor scintigraphy and CT. J. Nucl. Med.” 48 (2007): 508–518. CR - [8] Schuhmacher, J. and Maier, B.W., “A new 68Ge/68Ga radioisotope generator system for production of 68Ga in dilute HCl. ” Int. J. Appl. Radiat. Isot. 32 (1981): 31–36. CR - [9] Decristoforo, C., Knopp, R., von Guggenberg, E., Rupprich, M., Reger, T., Hess, A., Virgolini, I. and Haubner, R., “A fully automated synthesis for the preparation of 68Ga-labelled peptides. Nucl. Med. Commun.” 28 (2007): 870–875. CR - [10] Meyer, G.J.,. Maecke, H.,. Schuhmacher, J, Knapp, W.H and Hofmann, M. “68Ga-labelled DOTA-derivatised peptide ligands.” Eur. J. Nucl. Med. Mol. Imaging 31 (2004): 1097–1104. UR - https://doi.org/10.30931/jetas.297622 L1 - https://dergipark.org.tr/en/download/article-file/333837 ER -