Dna Biosensor
Mostrando 1-12 de 32 artigos, teses e dissertações.
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1. An Electrochemiluminescence Biosensor for the Determination of Mercury Ion via Dual-Amplification Strategy
A novel dual-signal amplificatory electrochemiluminescence (ECL) deoxyribonucleic acid (DNA) biosensor was designed for the determination of Hg2+. One amplification unit was gold nanoparticles (AuNPs) modified on a glassy carbon electrode, and the other was single-stranded DNA (ssDNA) (with amino at the 3’ terminal and thiol at the 5’ terminal) labeled w
J. Braz. Chem. Soc.. Publicado em: 2020-12
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2. Electrochemiluminescence Detection of Silver Ion Based on Trigeminal Structure of DNA
A novel electrochemiluminescence (ECL) biosensor for highly sensitive and selective detection of Ag+ is developed based on the sensitive “turn-on” structure-switching trigeminal structure of deoxyribonucleic acid (DNA-TS). DNA-TS consists of three oligonucleotides hybridized to form three double-stranded DNA like Y-shaped DNA structure. The formation of
J. Braz. Chem. Soc.. Publicado em: 23/05/2019
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3. Hidróxidos duplos lamelares: nanopartículas inorgânicas para armazenamento e liberação de espécies de interesse biológico e terapêutico
Studies about the inorganic nanoparticles applying for non-viral release of biological and therapeutic species have been intensified nowadays. This work reviews the preparation strategies and application of layered double hydroxides (LDH) as carriers for storing, carrying and control delivery of intercalated species as drugs and DNA for gene therapy. LDH sho
Química Nova. Publicado em: 2010
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4. Desenvolvimento de biossensores eletroquímicos, utilizando matriz polimérica modificada com biomoléculas, para o diagnóstico de câncer de próstata e hepatite C
The development of biologic sensors has become a wide activity in science seeking mainly health and environmental issues. The biosensor development in laboratory has been investigated by many researchers seeking sensitivity, specific, low cost and portable devices. The electrochemical techniques are used in the largest number of works due to the easiness in
Publicado em: 2010
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5. Development platform functionalized with poly(4-HBA) for use in biological sensors / Desenvolvimento de plataforma funcionalizada com poli(4-HBA) para aplicação em sensores biológicos
In this work, the 4-hidroxtbenzoic acid electropolymerization was investigated aiming at its application as functionalized platform in biomolecule immobilization in order to develop biological sensors. The material was adsorbed over graphite electrode and electrochemically characterized by cyclic voltammetry and electrochemical impedance spectroscopy. This a
Publicado em: 2009
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6. Optimization of an amperometric biosensor for the detection of hepatitis C virus using fractional factorial designs
O planejamento fatorial fracionário e com ponto central foram aplicados no desenvolvimento de um biossensor amperométrico para determinação do vírus da hepatite C. As biomoléculas foram imobilizadas por adsorção em eletrodos de grafite modificados com filme sol-gel preparado com matriz híbrida siloxano-poli(propileno-óxido). Diversos parâmetros fo
Journal of the Brazilian Chemical Society. Publicado em: 2008
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7. Desenvolvimento de sensor bioletroquímico para detecção da hanseníase
Leprosy is a chronic, granulomatous and dermatological disease, from infection caused by the bacillus Mycobacterium leprae. It is object of intervention of the state, because when untreated cause disability in the economically active population. Brazil remains one of the four endemic countries responsible for 34% of all cases registered at the beginning of 2
Publicado em: 2008
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8. Desenvolvimento de um biossensor amperomÃtrico de DNA para detecÃÃo do PapilomavÃrus humano
The cervical cancer has been a serious problem in Brazil and in the world wuith about 18.680 infected woman annually. The Human Papillomavirus (HPV) has been biologically associated with the development of cervical lesions, due to its capacity to infect epithelial cells and progress to cervical uterine cancer. The late screening may unviable the treatment, l
Publicado em: 2008
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9. Estudo eletroquímico da trifluralina, adsorção em quitosana, interação com o biossensor dsDNA e toxicidade frente ao caramujo Biomphalaria glabatra. / Electrochemistry studies of the trifluralin, adsorption on chitosan, DNA-biosensor interaction and toxicity in Biomphalaria glabatra.
O presente estudo aborda a investigação do comportamento eletroquímico do herbicida Trifluralina (TRF), umas das substâncias mais aplicadas para o controle de gramíneas, em eletrodo de carbono vítreo, através do uso de técnicas eletroquímicas visando estabelecer o mecanismo de redução, bem como verificar a interação deste herbicida com o biopol�
Publicado em: 2007
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10. Estudo bioeletroquímico de compostos eletrobioativos : relação estrutura-eletroatividade e utilização de biossensor de DNA no estudo de agentes intercalantes e alquilantes de DNA / Bioelectrochemical studies of electrobioactive compounds : the relationship structureelectroactivities in azoxyaromatics and use of DNA-biosensor in the study of intercalating and alkylating agents of DNA
Métodos eletroquímicos são úteis em Química Medicinal e auxiliam no esclarecimento de mecanismos de ação biológica e desempenham importante papel no estudo das relações estrutura-atividade, uma vez que os efeitos dos substituintes podem ser diretamente relacionados aos parâmetros eletroquímicos. No presente trabalho, estudos de correlação estru
Publicado em: 2006
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11. Desenvolvimento de um biossensor para detecÃÃo e identificaÃÃo do vÃrus da dengue em fluÃdos biolÃgicos
A dengue, uma doenÃa emergente, Ã atualmente a mais importante arbovirose humana, manifestando-se na forma de quatro sorotipos relacionados antigenicamente (DENV 1-4). Ã endÃmica e / ou epidÃmica em todas as regiÃes tropicais e subtropicais, e uma ameaÃa potencial para regiÃes mais temperadas. Dos 100 milhÃes de casos anuais, 450000 correspondem Ã
Publicado em: 2006
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12. Estudos bioeletroquímicos e eletroanalíticos da diospirina : agente leishmanicida e antitumoral
Analysis of molecular constituents based on natural products has acquired an important perspective in view of the renewed interest in the consumption of herbal prescriptions all over the world. Natural quinonoid compounds possess significant pharmacological properties and are responsible for the bioactivities of several plants. They showed several bioactivit
Publicado em: 2006