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| Missailidis,Sotiris; Perkins,Alan; Santos-Filho,Sebastião David; Fonseca,Adenilson de Souza da; Bernardo-Filho,Mario. |
| In the continuous search for earlier diagnosis and improved therapeutic modalities against cancer, based on our constantly increasing knowledge of cancer biology, aptamers hold the promise to expand on current antibody success, but overcoming some of the problems faced with antibodies as therapeutic or delivery agents in cancer. However, as the first aptamer reached the market as an inhibitor against angiogenesis for the treatment of macular degeneration, aptamers have found only limited applications or interest in oncology, and even less as radiopharmaceuticals for diagnostic imaging and targeted radiotherapy of tumours. Yet, the chemistry for the labelling of aptamers and the options to alter their pharmacokinetic properties, to make them suitable for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aptamer; Radiopharmaceutical; Diagnostic imaging; Radiotherapy; Epithelial tumor. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700013 |
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| Barbosa,Vanessa Santos de Arruda; Holanda,Maria de Carvalho Xavier; Silva,Roseane Pereira da; Oliveira,Daniel Pereira de; Silva Júnior,Maurício Ferreira da; Oliveira,Elias Herculano de; Spyrides,Maria Helena Constantino; Medeiros,Aldo Cunha. |
| Benznidazole, a drug with specific anti-Trypanosoma cruzi activity, is used in the treatment of Chagas' disease. The radiopharmaceutical sodium pertechnetate (Na99mTcO4) is used to obtain diagnostic images of the stomach, thyroid, parathyroids, salivary glands, brain and in the study of esophageal reflux and blood flow. This study aimed at evaluating in vivo the influence of benznidazole treatment on the sodium pertechnetate biodistribution in Wistar rats. The percentage of radioactivity per gram (%ATI/g) of various organs (brain, heart, esophagus, stomach, small intestine, large intestine, spleen, liver, muscle and blood) was determined. Comparing the treated rats with the controls, we observed that sodium pertechnetate biodistribution did not change when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antiparasite; Radiopharmaceutical; Technetium-99m; Benznidazole; Biodistribution; Trypanosoma cruzi. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700028 |
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| Lima,Marisa de Jesus de C.; Marques,Fabio Luiz Navarro; Okamoto,Miriam Roseli Yoshie; Garcez,Alexandre Tales; Sapienza,Marcelo Tatit; Buchpiguel,Carlos Alberto. |
| The [Cu(MIBI)4]BF4 complex was synthesized and different formulations for lyophilized kits that could be cost-effectively used with different routines in nuclear medicine laboratories were investigated. In one preparation the kit components were kept similar to the Cardiolite® , except that the SnCl2.2H2O concentration was increased to 0.150 mg. In a second formulation, component concentrations were reduced to 1/5 of the original value and the SnCl2.2H2O concentration was adjusted to 0.04 mg. These products were labeled with maximum activities of 55.5 GBq and 8.14 GBq, respectively, and have shown an average radiochemical purity of 95 %. Biodistribution of the products was assessed by dissection in mice and in rabbits, and did not show any statistical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: [99mTc]technetium; [[99mTc](MIBI)6]+; Radiopharmaceutical; Biodistribution. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000700001 |
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