Made available in DSpace on 2014-12-17T14:13:38Z (GMT). No. of bitstreams: 1 DanielleAT.pdf: 281978 bytes, checksum: c61d07a033e83fa024963234eef23f5d (MD5) Previous issue date: 2008-06-11 / Artemisia vulgaris L..is used in folk medicine and in Traditional Chinese Medicine (TCM). This medicinal plant has been utilized as anticonvulsive, analgesic, antispasmodic effect, rheumatic pains, menstrual dyspepsia, asthenia, epilepsy, hepatitis, fevers, anemia and to expel parasites. In nuclear medicine, blood constituents are labeled with technetium-99m (99mTc) and used as radiopharmaceuticals (radiobiocomplexes). Authors have been described that synthetic and/or natural drugs could modify the labeling of blood constituents with 99mTc. The aim of this work was to evaluate the effects of an aqueous extract of Artemisia vulgaris L. on the labeling of blood constituents with 99mTc. Blood samples withdrawn of Wistar rats were incubated with Artemisia vulgaris L, stannous chloride and 99mTc, as pertechnetate ion. Aliquots of plasma (P) and blood cells (BC) were isolated. Aliquots of P and BC were also precipitated with trichloroacetic acid and soluble (SF) and insoluble (IF) fractions were separated. The radioactivity in each fraction was counted and the percentages of radioactivity (%ATI) were calculated. Artemisia vulgaris L. extract decreased significantly (p<0.05) the %ATI on BC and on IF-BC. The analysis of the results indicates that the extract could have substances that could interfere on the transport of stannous through the erythrocyte membrane altering the labeling of blood cells with 99mTc. Working in this study was a multidisciplinary group, with Phisical therapists, Biomedicals, Physicals, Pharmacists, Biologists, Statistics and Physicians. / Artemisia vulgaris L. ? usada na medicina tradicional como anticonvulsivante, analg?sico, antiespasm?dico, indicada para dores reum?ticas, dispepsia menstrual, astenia, epilepsia, hepatite, febre, anemia e para expelir parasita. Na medicina nuclear, constituintes do sangue s?o marcados com tecn?cio-99m (99mTc) e usados em procedimentos cl?nicos como radibiocomplexos. Estudos t?m demonstrado que drogas sint?ticas ou naturais podem modificar a marca??o dos constituintes sangu?neos com 99mTc. O presente estudo teve como objetivo avaliar os efeitos de um extrato de Artemisia vulgaris L. na marca??o dos constituintes sangu?neos com 99mTc. Amostras de sangue foram incubadas com o extrato vegetal, cloreto estanoso e 99mTc na forma de pertecnetato de s?dio. Plasma e c?lulas sang??neas foram isolados por centrifuga??o. Al?quotas de plasma e c?lulas sang??neas foram tamb?m precipitadas com ?cido tricloroac?tico para isolamento de fra??es sol?vel e insol?vel. Em cada fra??o a radioatividade foi contada e as porcentagens de radioatividade (%ATI) calculadas. O extrato de Artemisia vulgaris L diminuiu significantemente (p<0,05) a %ATI nas c?lulas sangu?neas e nas prote?nas celulares. A an?lise dos resultados indica que o extrato de Artemisia vulgaris L apresentaria subst?ncias que poderiam interferir no transporte de ?ons estanoso e/ou pertecnetato atrav?s da membrana do eritr?cito alterando a marca??o das c?lulas sangu?neas com 99mTc. A realiza??o deste trabalho envolveu uma equipe multidisciplinar, incluindo fisioterapeutas, biom?dicos, f?sicos, farmac?uticos, bi?logos, estat?sticos e m?dicos