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Sanad MH, Gizawy MA, Motaleb MA, Ibrahim IT, Saad EA. A Comparative Study of Stannous Chloride and Sodium Borohydride as Reducing Agents for the Radiolabeling of 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-Porphine with Technetium-99m for Tumor Imaging. RADIOCHEMISTRY 2021. [DOI: 10.1134/s1066362221040159] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Sanad MH, Eyssa HM, Gomaa NM, Marzook FA, Bassem SA. Radioiodinated esomeprazole as a model for peptic ulcer localization. RADIOCHIM ACTA 2021. [DOI: 10.1515/ract-2021-1056] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Abstract
This work focuses on tracking stomach ulcer localized in mice. High labeling yield and radiochemical purity were achieved for the formation of a [125I]esomeprazole radiotracer at optimum conditions of oxidizing agent content (chloramines-T (Ch-T), 100 μg), substrate amount (Esom, 100 μg), pH of reaction mixture (6), reaction time (30 min) and temperature (37 °C), using radioactive iodine-125 (200–450 MBq). The radiolabeled compound, [125I]esom, was stable in serum and saline solution during 24 h. Esom is acting as a histamine-2-receptor antagonist (H2RA). Biodistribution studies were carried in normal and ulcerated mice. High uptake of 78.12 ± 0.80% injected dose/g organ (ID/g) observed in ulcerated mice confirmed the suitability of [125I]esomeprazole as a novel radiotracer for stomach imaging.
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Affiliation(s)
- M. H. Sanad
- Labeled Compounds Department , Hot Labs Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - H. M. Eyssa
- Radiation Chemistry Department , National Center for Research and Radiation Technology, Egyptian Atomic Energy Authority , P.O. Box 29 , Cairo , Egypt
| | - N. M. Gomaa
- Radiation Microbiology Department/Biotechnology/National Center for Research and Radiation Technology , Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - F. A. Marzook
- Labeled Compounds Department , Hot Labs Center, Egyptian Atomic Energy Authority , P.O. Box 13759 , Cairo , Egypt
| | - S. A. Bassem
- Food Toxicology and Contaminants Department , National Research Centre , Dokki , Cairo , Egypt
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