Development of a new method to prepare nano-/microparticles loaded with extracts of azadirachta indica, their characterization and use in controlling plutella xylostella

Biodegradable nanoparticles have been widely explored as carriers for controlled delivery of therapeutic molecules; however, studies describing the development of nanoparticles as carriers for biopesticide products are few. In this work, a new method to prepare nanoparticles loaded with neem (Azadirachta indica) extracts is presented. In this study, nanoparticles were formulated as colloidal suspension and (spray-dried) powder and characterized by evaluating pH, particle size, zeta potential, morphology, absolute recovery, and entrapment efficiency. A high-performance liquid chromatography method was used for nanoparticle characterization. The best formulations presented absolute recovery and entrapment efficiencies of approximately 100% and a release profile based on swelling and relaxation of the polymer or polymer erosion. The biological data of the formulated products against Plutella xylostella showed 100% larval mortality. The nanoparticle information improved the stability of neem products against ultraviolet radiation and increased their dispersion in the aqueous phase. © 2013 American Chemical Society.

Use of cone-beam tomography and digital subtraction radiography for diagnosis and evaluation of traumatized teeth treated with endodontic surgery and MTA. A case report

The aim of this paper was to report the diagnosis and evaluation of periradicular bone repair by using computed tomography and digital subtraction radiography in an endodontic surgery case treated with mineral trioxide aggregate (MTA). The patient had local swelling and fistula 7years after trauma in the upper jaw. Periapical lesion on tooth #12 and root resorption of tooth #11 were detected radiographically. Endodontic therapy and placement of intracanal medication were carried out. After 3months, with no improvement in the clinical signs and symptoms, computed tomography was performed, showing extensive apical bone resorption on tooth #12 and dental resorption promoting communication of the root canal with the periodontium of tooth #11. The patient was referred to endodontic surgery. After surgery and postoperative periods of 15, 30, 60, 90, and 120days, standardized radiographs were taken, digitized, and subjected to digital subtraction of the images using Adobe Photoshop CS software. Four years later, a cone-beam computed tomography was performed, showing bone repair and absence of root resorption at tooth #11. In this clinical case, digital subtraction radiography was effective for early detection of new bone formation and evolution of repair. © 2011 John Wiley & Sons A/S.

Desenvolvimento de métodos de cultivo de Gluconacetobacter xylinus para obtenção de compósitos à base de celulose bacteriana e colágeno tipo I adicionado in situ

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeito da hidrólise enzimática seguida da moagem em moinho de bolas sobre as características estruturais e físico-químicas do amido de madioquinha-salsa

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Efeito do tamanho dos grânulos nas características estruturais e físico-químicas do amido de trigo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da interação entre amido de mandioca e gomas e efeito de sua aplicação em bebida láctea fermentada

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Impacto do tratamento térmico com baixa umidade sobre as características físico-químicas e reológicas de amidos de mandioca, araruta e mandioquinha-salsa

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Características estruturais e físico-químicas de amidos obtidos de diferentes fontes botânicas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Uso de antioxidantes no meio diluente tris para refrigeração e congelação de células espermáticas provenientes de epidídimo de cães submetidos à orquiectomia eletiva

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Emprego de membrana de celulose microfibrilar na ceratoplastia lamelar em coelhos (O. cuniculus, Linnaeus, 1758): aspectos clínicos, morfológicos e imunoistoquimicos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Eritrograma glutationa reduzida e superóxido dismutase eritrocitários e metahemoglobina em equinos da raça Árabe submetidos a exercício em esteira: efeito da suplementação com vitamina E (dl-alfa-tocoferol)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Formadores de filmes híbridos orgânicos inorgânicos do tipo ureasil-poliéter para liberação controlada de fármacos

Pós-graduação em Ciências Farmacêuticas - FCFAR

Painéis alternativos produzidos a partir de resíduos termoplásticos e da pupunheira (Bactris gasipaes Kunth)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aproveitamento de madeiras tropicais para confecção e avaliação de painéis aglomerados com mistura de partículas e resinas alternativas

Pós-graduação em Engenharia Civil - FEIS

Estudo multi-instrumental do processo de desintegração de comprimidos envolvendo três classes de desintegrantes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)