Technetium
Mostrando 13-24 de 286 artigos, teses e dissertações.
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13. Alternative chromatographic system for the quality control of lipophilic technetium-99m radiopharmaceuticals such as [99mTc(MIBI)6]+
Knowledge of the radiochemical purity of radiopharmaceuticals is mandatory and can be evaluated by several methods and techniques. Planar chromatography is the technique normally employed in nuclear medicine since it is simple, rapid and usually of low cost. There is no standard system for the chromatographic technique, but price, separation efficiency and s
Braz J Med Biol Res. Publicado em: 03/03/2015
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14. Ethanol affects the absorption and tissue distribution of orally administered antigens in mice
The aim of this work was to evaluate the effects of ethanol on the adsorption and tissue distribution of orally administered antigens in mice. Results showed that ethanol reduced the level of anti-ovalbumin IgA antibodies in intestinal fluid for the mice treated orally with a palmitoyl-ovalbumin conjugate. Ethanol was administered intragastrically to mice at
Braz. arch. biol. technol.. Publicado em: 2013-08
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15. Padronização da pesquisa de linfonodos sentinelas em estômago por métodos combinados : estudo experimental em coelhos = Standardization of sentinel lymph node navigation in stomach by combined methods: experimental study in rabbits / Standardization of sentinel lymph node navigation in stomach by combined methods : experimental study in rabbits
Introdução - Com os estudos de Gould et al. (1960), Cabanas (1977) e Morton et al. (1992), estabeleceu-se o conceito da pesquisa do linfonodo sentinela. Esse se baseia na teoria de que ao identificar a presença ou ausência de metástase no primeiro linfonodo que recebe a drenagem linfática a partir do tumor (sentinela), poderia representar o estado de a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2012
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16. Quelato-complexos de rênio e tecnécio com potencial aplicação medicinal / Rhenium and technetium chelate-complexes of potential medicinal application
Neste trabalho foram estudadas as formas de coordenação de piridinonas, ditiocarbazatos e N-(N\ \ ,N\ \ -dialquilaminotiocarbonil)-N\ -(2-hidroxifenil)benzoamidinas aos centros metálicos Re (V) e Tc (V). Neste sentido, os complexos triclorobis(trifenilfosfina)oxorrênio(V), [ReOCl3(PPh3)2]57, tribromobis(trifenilfosfina)oxorrênio(V), [ReOBr3(PPh3)2]57, e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/05/2012
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17. Effect of rosemary (Rosmarinus officinalis) extract on the biodistribution of 99mTc sulphur colloid and on the radiolabeled blood constituents
With this study we evaluated the effects of the herb rosemary (Rosmarinus officinalis L. Lamiaceae) extract on the labeling of blood constituents with technetium-99m (99mTc) labeled sulphur colloid and on the biodistribution of 99mTc-Sulphur Colloid in Wistar albino rats. For this purpose, two groups of animals (male wistar rats, 130-140 g) were treated (1 m
Rev. bras. farmacogn.. Publicado em: 14/12/2012
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18. Technetium-99m-labeled deoxynivalenol from Fusarium mycotoxin alters organ toxicity in BALB/c mice by oral and intravenous route
The toxicity of deoxynivalenol, both intravenously and orally, was investigated in male and female BALB/c mice. Technetium-99m (99m Tc)-labeled deoxynivalenol was administered to mice by tail vein injection and orally dosed. Distribution of labeled deoxynivalenol at 26 hours was monitored by gamma-scintigraphy. In the evaluated organs, the accumulation of ra
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 2012
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19. Comparison of two peptide radiotracers for prostate carcinoma targeting
OBJECTIVES: Scintigraphy is generally not the first choice treatment for prostate cancer, although successful studies using bombesin analog radiopeptides have been performed. Recently, a novel peptide obtained using a phage display library demonstrated an affinity for prostate tumor cells. The aim of this study was to compare the use of a bombesin analog to
Clinics. Publicado em: 2012
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20. Desenvolvimento de um modelo experimental para estudo do linfonodo sentinela da vulva da cadela / Development of an experimental model for studing the sentinel lymph node on dogÂsfemale vulva
O cÃncer de vulva corresponde a aproximadamente 1% das neoplasias malignas da mulher e de 3% a 5% de tumores genitais femininos. 90% destes sÃo carcinomas espino-celulares, curÃveis quando diagnosticado precocemente. O tratamento radical inclui o esvaziamento inguinal bilateral na maioria dos casos. Aproximadamente 30% das pacientes operÃveis tÃm dissem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/12/2011
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21. Estudo comparativo de radiofármacos para angiogênese na detecção de melanoma / Comparative study of angiogenesis radiopharmaceuticals for melanoma detection
Diagnóstico precoce e tratamento de melanoma, um tumor cutâneo com o pior prognóstico, é extremamente importante para um resultado clínico favorável. A biblioteca de peptídeos phage display é um recurso útil de triagem para identificar peptídeos bioativos que interagem com alvos em cânceres. O objetivo desse estudo foi a avaliação de dois traça
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/09/2011
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22. Comparação entre as modalidades de isquemia renal isotérmica seletiva, não-seletiva e intermitente em coelhos / Comparison among modalities of normothermic renal ischemia selective, non-selective and intermittent in rabbits
INTRODUÇÃO: O limite de tempo de isquemia renal sem causar um dano permanente à função ainda é um questionamento pertinente na prática cirúrgica urológica. Algumas cirurgias requerem um campo cirúrgico menos sangrante, necessitando de uma interrupção temporária do fluxo sanguíneo para o parênquima renal através de clampeamento do pedículo. E
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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23. The impact of previous para-areolar incision in the upper outer quadrant of the breast on the localization of the sentinel lymph node in a canine model
OBJECTIVES: This paper discusses the influence of a para-areolar incision in the upper outer quadrant of the breast on the location of the sentinel lymph node in a canine model. METHODS: The sentinel lymph node was marked with technetium-99, which was injected into the subareolar skin of the cranial breast. After the marker had migrated to the axilla, an arc
Clinics. Publicado em: 2011
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24. An experimental model to study the effects of a senna extract on the blood constituent labeling and biodistribution of a radiopharmaceutical in rats
Cassia angustifolia Vahl (senna) is a natural product that contains sennosides, which are active components that affect the intestinal tract and induce diarrhea. Authors have shown that senna produces DNA (deoxyribonucleic acid) lesions in Escherichia coli cultures and can act as an antifungal agent. Natural drugs can alter the labeling of blood constituents
Clinics. Publicado em: 2011