Programa de Pós-Graduação em Ciências Farmacêuticas - PPGCF/ICS
URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/2312
O Programa de Pós-Graduação em Ciências Farmacêuticas (PPGCF) vinculado ao Instituto de Ciências da Saúde (ICS) da Universidade Federal do Pará (UFPA) apresenta um auto-impacto de inserção regional uma vez que se trata do único PPGCF na Região Norte pelo grande potencial de utilização da biodiversidade na região amazônica. Além de favorecer a fixação e atração de profissionais qualificados na área de Ciências Farmacêuticas na Região Amazônica.
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Dissertação Acesso aberto (Open Access) Caracterização fitoquímica e avaliação da atividade anti-inflamatória e antinociceptiva do óleo fixo de Euterpe oleracea Mart.(Universidade Federal do Pará, 2009) FAVACHO, Hugo Alexandre Silva; SOUSA, Pergentino José da Cunha; http://lattes.cnpq.br/9909053957915090; CARVALHO, José Carlos Tavares; http://lattes.cnpq.br/4251174810000113Euterpe oleracea Mart. Is a typical palm tree from the Amazon, growing spontaneously in Pará and Amapá States, appreciated for its attractive beauty and for nutritional purposes. The fruit of Euterpe oleracea, commonly known as açaí, has been demonstrated to exhibit significantly high antioxidant capacity in vitro, and, therefore, may have possible health benefits. Phytochemical studies have revealed the presence of fatty acids, anthocyanins and steroids. The aim of this work was study the fatty oil of this species (OEO) on inflammatory and hyperalgesic models in vivo, in order to detect the possible involvement of its compounds on the inflammatory and algesic responses. The following experimental models were used: writing test in mouse, rat paw edema, granulomas testing rat, vascular permeability in rat, migration test in rats and ear erythema by croton oil in mice. The oral doses of 500, 1000 and 1500 mg/kg of OEO inhibited the number of writhes by 33,67%, 45,88% and 55,58%, respectively. The OEO produced dose-dependent effect, and the median effective dose (ED50) was 1226,8mg/kg, the OEO inhibited the inflammatory process by 29,18% on the 4 hour of the assay (edema peak) when compared to the untreated control. The daily administration of OEO for 6 days inhibited the granulomatous tissue formation in 36,66%. In the ear erythema by croton oil, the OEO, provoked the significant inhibitory effect of 37.9%. In the vascular permeability test, the OEO inhibited the vascular permeability in 54.5%. Pretreatment (60min) of rats with OEO significantly decreased neutrophil migration on carrageenan-induced peritonitis (with inhibition of 80.14%). The results suggest that OEO shows anti-inflammatory activity in both acute and chronic inflammatory processes, and analgesic activity, probably of peripheral origin.Dissertação Acesso aberto (Open Access) Obtenção e caracterização de nanoemulsão óleo em água a partir de óleo de açaí (Euterpe oleracea M.)(Universidade Federal do Pará, 2015-05-13) CONTENTE, Denise Maria Loureiro; SILVA JÚNIOR, José Otávio Carréra; http://lattes.cnpq.br/4437885351749994Nanoemulsions have been proposed as an option for drug delivery current systems and increasing interest due to several advantages when compared with traditional formulations. Vegetable oils are considered pharmaceutical ingredients of great value as lipid matrix of these systems, such as oil açaí, of Amazonian origin oil, which has a number of medicinal benefits such as antioxidant and moisturizing activity, and biocompatibility, increases skin elasticity and acts as a physical barrier. The objective of this study was to obtain nanoemulsion O / W, from açaí oil, surfactant and water, through the phase inversion temperature method for topical use. Açaí oil was characterized by physical-chemical tests and on the profile of fatty acids by gas chromatography (GC), spectrometry in the infrared (FT-IR) and thermal analysis by thermogravimetry (TG) and differential scanning calorimetry (DSC). The surfactant, ketoconazole and their binary mixtures with oil açaí were evaluated by DSC. Obtained nanoemulsions making use of açaí oil, BrijTM CS20, water and ketoconazole. The characterization of nanoemulsions was performed on the droplet size, polydispersity index (PI), the zeta potential (PZ), morphology and encapsulation efficiency (EE). The açaí oil showed acid value (3.78 mg KOH / g), iodine value (71 gl2 / 100g), saponification number (199 mg KOH / g), refractive index (1.470) and density (0,950g / ml). In GC analysis showed 68.05% of unsaturated fatty acids, being 47.58% oleic acid. Oxidative stability of açaí oil Rancimat was about 11.79 hours. The FT-IR spectrometric analysis confirmed bands suggestive of unsaturated fatty acids and thermal analysis it was observed that the thermal degradation occurs above 200 ° C. The combinations of raw materials analyzed by DSC was observed that the incorporation of ketoconazole with açaí oil. The nanoemulsion B10 with 0.5% ketoconazole showed 98.31% EE. The transmission electron microscopy showed droplets with spherical shape and after study of PZ (-25.53 ± 10.04 mV), PI (0.37 ± 0.04) and size (128.53 nm ± 10.04) by 30 days, nanoemulsion showed little variation. Thus, it can be said that açaí oil has the potential to be used as a pharmaceutical ingredient can be used as oil phase nanoemulsions loaders of fat-soluble substances.Dissertação Acesso aberto (Open Access) Obtenção e caracterização de sistemas líquido cristalinos contendo óleo de açaí (euterpe Oleraceae Mart.)(Universidade Federal do Pará, 2015-03-20) PEREIRA, Rayanne Rocha; SILVA JÚNIOR, José Otávio Carréra; http://lattes.cnpq.br/4437885351749994The Euterpe oleracea Mart. is an Amazonian palm tree, popularly known as acai. From the pulp of the acai fruit can extract the fixed oil, consisting mainly of fatty mono and polyunsaturated acids. This oil is a promising raw material for the pharmaceutical industry, which can be exploited by their biological activities and as a raw material in the development of sustained drug delivery systems. Liquid crystals are examples of sustained drug delivery systems. The objective of this study was to develop liquid crystalline systems containing acai oil as the oil phase and the Procetyl AWS as surfactant. Initially acai oil was analyzed for its physical and chemical characteristics. Gas chromatography revealed oleic acid (47.58%), palmitic acid (24.06%) and linoleic acid (13.58%) as major constituents. The physicochemical characterization showed values of acidity, iodine, saponification, refraction and density within the limits and recommended standards. Spectroscopy in the infrared region showed characteristic bands of acai oil. Thermogravimetry açai oil showed a unique event that possibly due to the degradation of fatty acids, this event is located in the temperature range of 241.71 to 481,14ºC. The acai oil induction time was 11,79h. The pre-formulation studies with acai oil and the surfactants showed no evidence of chemical interaction or resulting degradation of binary mixture between the oil and the Procetyl AWS. Formulations were prepared 36 with the aid of ternary diagram between these formulations were identified hexagonal and cubic mesophases. The rheological analysis showed pseudoplastic behavior (n <1) with plastic characteristics that refer to the Bingham fluids. The stability study conducted over 30 days did not reveal any signs of instability of the evaluated systems. The realization of this study demonstrated that the acai oil is a promising raw material in the development of sustained drug delivery system.