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Sanad MH, Eyssa HM, Marzook FA, Farag AB, Rizvi SFA, Mandal SK, Patnaik SS, Fouzy ASM, Bassem SA, Verpoort F. Radiosynthesis and Biological Evaluation of 99mTc Nitrido-Levetiracetam as a Brain Imaging Agent. RADIOCHEMISTRY 2021. [DOI: 10.1134/s106636222105012x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Sanad MH, Rizvi SFA, Farag AB. Synthesis, characterization, and bioevaluation of 99mTc nitrido-oxiracetam as a brain imaging model. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2021-0003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Abstract
In this work, the radiotracer [99mTc]nitrido-oxiracetam complex was labeled in the presence of 99mTc-nitrido as a core. In order to get the highest radiochemical purity, many effective factors have been studied such as temperature of the reaction, time of the reaction, the pH of the reaction mixture, substrate amount, and stability to give high percent more than 99%. Finally, biodistribution studies have been indicated the convenience of [99mTc]nitrido-oxiracetam as a new radiotracer that could be used in brain imaging. Giving a maximum uptake of 10.6% at 30 min post injection.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Laboratories Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - S. F. A. Rizvi
- College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000, Gansu , P. R. China
| | - A. B. Farag
- Pharmaceutical Chemistry Department , Faculty of Pharmacy, Ahram Canadian University , Giza , Egypt
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Sanad MH, Farouk N, Fouzy ASM. Radiocomplexation and bioevaluation of 99mTc nitrido-piracetam as a model for brain imaging. RADIOCHIM ACTA 2017. [DOI: 10.1515/ract-2016-2714] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The aim of the work is to radiolabel a piracetam using [99mTc≡N]2+core in order to give a 99mTcN-labeled piracetam complex, that is expected to concentrate in brain organ by AMPA receptors. The complex was prepared with high radiochemical purity (>98.0) and maintained stability throughout the working period (8 h) using different quality controls. Biodistribution investigation showed that, the maximum uptake of the complex in the brain was 13.5±0.12% at 5 min post injection (p.i.) of the injected dose/g which retained till 2 h post-injection.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department, Radioisotopes Production and Radioactive Sources Division , Hot Laboratories Center, Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - N. Farouk
- Labeled Compounds Department, Radioisotopes Production and Radioactive Sources Division , Hot Laboratories Center, Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - A. S. M. Fouzy
- Food Toxin and Contaminants Department, National Research Centre , 33, Tahrir St, Dokki , Caro , Egypt
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