Enzime
Mostrando 13-24 de 50 artigos, teses e dissertações.
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13. Seleção de microrganismos produtores de frutosiltransferase e estudo das propriedades bioquimicas da frutosiltransferase de Penicillium sp / Screening of microrganisms for transfructosylating activity and study of biochemical properties of fructosyltransferase from Penicillium sp
t: Impulsionados pela grande demanda por alimentos ¿saudáveis¿ e de calorias controladas, têm surgido desde os anos 80 um grande número de adoçantes alternativos e, entre eles, diversos oligossacarídeos. Entre os oligossacarídeos mais estudados estão os frutooligossacarídeos (FOS), que se tornaram mais importantes por suas propriedades funcionais q
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/02/2009
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14. Caracterização parcial de fator(es) hemolítico(s) de Arthrographis kalrae
In this study, soluble components of Arthrographis kalrae have been investigated for immunogenicity/antigenicity and hemolytic activity. For immunogenicity/antigenicity assays, A. kalrae cell-free antigens (CFA), sonicated antigens (SA) and rabbit anti-CFA by immunodiffusion (ID)/enzyme linked immunosorbent assay (ELISA)/western blotting (WB) were used in ad
Publicado em: 2009
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15. Effects of ZmDof1 and OsDof25 transcriptional factors superexpression on nitrogen usage efficiency in Arabidopsis. / Efeito da superexpressão dos fatores de transcrição ZmDof1 e OsDof25 sobre a eficiência de uso de nitrogênio em Arabidopsis.
To improve nitrogen usage efficiency in plants the rice transcriptional factor OsDof25 was identified and cloned, whose probably orthologe is the maize ZmDof1, already identified and partially characterized. The ZmDof1 was also cloned for comparative analysis with OsDof25, in order to confirm this last one as ZmDof1 orthologe in rice. The constructions for A
Publicado em: 2009
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16. Estudo longitudinal de marcadores sorológicos para o imunodiagnóstico da toxoplasmose aguda humana.
Toxoplasma gondii is thought to infect one third of the world population. Acute infection is often asymptomatic, but if acquired during pregnancy, T. gondii can be transmitted vertically, through the placenta, from mother to fetus, who is at high risk of developing severe disease. The commercially available serological tests have several limitations such as
Publicado em: 2009
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17. Estudo da variabilidade e diferenças morfológicas entre as espécies Cryptococcus neoformans e Cryptococcus gattii por análise de diferença representacional e microscopia eletrônica de varredura
Cryptococcus neoformans e Cryptococcus gattii são leveduras do grupo dos basidiomicetos que causam criptococcose em indivíduos imunocomprometidos e imunocompetentes, respectivamente. Ambas as espécies são caracterizadas por diferenças moleculares, imunológicas, fisiológicas e epidemiológicas. Visando identificar diferenças morfológicas, foi desenvo
Publicado em: 2008
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18. Enzime-linked immunosorbent assay for detection of respiratory syncytial virus antibodies in hematopoietic stem cell transplant recipients / Aplicação de ensaio imunoenzimático para detecção de anticorpos contra o vírus respiratório sincicial em repectores de transplante de células tronco-hematopoéticas
Respiratory syncytial virus (RSV) infection can cause significant morbidity and mortality in haematopoietic stem cell transplant (HSCT) recipients, especially when upper respiratory tract infection (RTI) progresses to lower RTI, which is expected to occur in more than 50% of the patients. The humoral immunity induced by RSV infection is transient and reinfec
Publicado em: 2008
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19. cap20 gene pathogenicity in Colletotrichum gloeosporioides of the isolates / Gene de patogenicidade cap20 em isolados de Colletotrichum gloeosporioides
The early event for the penetration in some Colletotrichum species, iniciates with conidium adesion and germination on the surface of the host plant, producing germinative tube and then forming the apressorium, wich penetrates directly in the cuticle. Previous studies have identified in Colletotrichum gloeosporioides genes called cap, wich are only expressed
Publicado em: 2008
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20. AVALIAÇÃO PRELIMINAR DE IMPACTO AMBIENTAL SOBRE A FAUNA DE PEQUENOS MAMÍFEROS E SUAS TAXAS DE INFECÇÃO POR Trypanosoma cruzi E HANTAVÍRUS NA ÁREA DE INFLUÊNCIA DA USINA HIDRELÉTRICA ESPORA, APORÉ GO
The objective of this study was to evaluate possible environmental impacts caused by the construction and filling of the Espora hydroelectric power plants reservoir (localized in Aporé, Serranópolis and Itarumã GO, Brasil) on small mammal fauna and their Hantavirus and Trypanosoma cruzi infection rates. Small mammals were captured in periods pre- and post
Publicado em: 2008
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21. PESTICIDES IN ORGANIC SOILS OF NOVA FRIBURGO RJ: APPLICATION OF THE ACHE INHIBITION ENZYMATIC METHODOLOGY AND STUDIES ON THE INFLUENCE OF SOIL FERTILITY PARAMETERS / PESTICIDAS EM SOLOS AGRÍCOLAS DE NOVA FRIBURGO, RJ: APLICAÇÃO DA METODOLOGIA ENZIMÁTICA DE INIBIÇÃO DA ACHE E ESTUDOS DA INFLUÊNCIA DOS PARÂMETROS DE FERTILIDADE DO SOLO
The objective of this study was to develop an analytical methodology for the determination of metomyl in soils through the inhibition of the enzime acetylcolinesterase (AChE), also regarding the influence of soil fertility parameters. The soil samples were collected from agricultural areas in the microbasin of São Lourenço stream, in Nova Friburgo district
Publicado em: 2008
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22. Efeitos da exposição pré-púbere ao herbicida glifosato no desenvolvimento reprodutivo de ratos Wistar machos / Effects of the prepubertal exposure to glyphosate herbicide on reproductive development of male Wistar rats
The glyphosate-Roundup is a widely pesticide used in several culturas agrícolas. Its reproductive toxicity is associated to inhibition of StAR protein and aromatase enzime that cause in vitro significantly reduction in testosterone and estradiol production. The objective of this study was to evaluate the in vivo effects of inhibition of StAR protein and aro
Publicado em: 2007
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23. Characterization of tripsyns in Lutzomyia longipalpis: main vector of leishmaniose visceral in Brazil. / Caracterização de tripsinas em Lutzomyia longipalpis: principal vetor da leishmaniose visceral no Brasil.
Visceral Leishmaniasis is a major public health problem. In the New World it is caused by Leishmania infantum chagasi, and in Brazil Lutzomyia longipalpis is the main vector. Insect midgut enzymatic activity during blood digestion is one of the main obstacles which L. i. chagasi must surpass to succeed in establishing infection. Trypsins are the main proteas
Publicado em: 2007
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24. Influencia dos polimorfismos nos genes CYP1A1, CYP1B1 e CYP2C9 na suscetibidade ao adenocarcionama colorretal esporadico / Influence polymorphisms in the genes CYP1A1, CYP1B1 and CYP2C9 susceptibility to colorectal cancer
The colorectal cancer (CRC) characterizes a neoplasia which reaches the colon and the rectum tissues. It is classified as so, despites the biological and epidemiological differences between the colon and rectum cancer, because there is not a clear anatomical separation of these areas. The importance of external factors in the pathology of the sporadical CRC
Publicado em: 2007