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| Fuscaldi,Leonardo Lima; Santos,Daniel Moreira dos; Pinheiro,Natália Gabriela Silva; Araújo,Raquel Silva; Barros,André Luís Branco de; Resende,Jarbas Magalhães; Fernandes,Simone Odília Antunes; Lima,Maria Elena de; Cardoso,Valbert Nascimento. |
| Abstract Background Current diagnostic methods and imaging techniques are not able to differentiate septic and aseptic inflammation. Thus, reliable methods are sought to provide this distinction and scintigraphic imaging is an interesting option, since it is based on physiological changes. In this context, radiolabeled antimicrobial peptides have been investigated as they accumulate in infectious sites instead of aseptic inflammation. The peptide LyeTx I, from the venom of Lycosa erythrognatha, has potent antimicrobial activity. Therefore, this study aimed to synthesize LyeTx I derivatives with the chelating compound HYNIC, to evaluate their antimicrobial activity and to radiolabel them with 99mTc. Methods Two LyeTx I derivatives, HYNIC-LyeTx I... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Septic and aseptic inflammation; Differential diagnosis; Antimicrobial peptides LyeTx I derivatives; MALDI-ToF-MS RP-HPLC; Technetium-99m; HYNIC EDDA Tricine. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992016000100312 |
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| Arribada,Raquel Gregorio; Pereira,Nara Caroline; Cardoso,Valbert Nascimento; Cunha Júnior,Armando da Silva; Barros,André Luís Branco de. |
| Radiolabeling cidofovir with technetium-99m (99mTc-CDV) is an innovative procedure that enables real-time monitoring of the drug. Essays were performed in vitro, showing high radiolabel stability within 24 h. Blood clearance, biodistribution studies, and scintigraphic images were performed in healthy mice in order to evaluate the profile of the drug in vivo. 99mTc-CDV showed biphasic blood circulation time and significant kidney uptake, indicating that 99mTc-CDV is preferentially eliminated by the renal route. Bones also showed important uptake throughout the experiment. In summary, cidofovir was successfully labeled with technetium-99m and might be used in further studies to track the drug. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cidofovir; Radiotracer; Technetium-99m; Biodistribution; Scintigraphic imaging. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100570 |
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