922 resultados para Anti-infective action


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Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

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Pós-graduação em Ciências Farmacêuticas - FCFAR

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Pós-graduação em Ciências Biológicas (Farmacologia) - IBB

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Agronomia (Horticultura) - FCA

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

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Rheumatoid arthritis (RA) is a chronic illness with great potential to cause comorbidities resulting from cumulative inflammatory activities, and it contributes with the increase of disabilities and death of patients. It affects 1 to 2% of world population and usually occurs between 30 and 50 years of age. Among existing therapeutic options for the disease non-steroidal anti-inflammatory drugs (NSAIDs) still play an important part in the treatment, being widely used by patients to relieve pain and stiffness. However, this class of drugs causes many adverse gastrointestinal effects, such as dyspepsia, heartburn, nausea and vomit, and its use is one of the most common causes of peptic ulcers. Mangiferin (a glicosilated xanthone extracted mainly from the bark of Mangifera indica L.) is the main compound of an aqueous extract made from the bark stem of the mango tree. Previous studies conducted by our research group prove the anti-inflammatory action of mangiferin on an animal model of periodontitis, and its gastroprotective action has been described before. Considering these informations this study evaluated mangiferin’s potential on the treatment of RA and on gastric ulcer healing in animal models, and analyzed toxicity parameters to assure efficacy and safety of the compound as potential new drug for the treatment of the disease. RA was induced in rats by subcutaneous injection of bovine collagen and Freund’s complete adjuvant. This method presented low incidence of RA in rats, but we were able to induce the disease in 60 to 70% of the animals. Due to the wide use of NSAIDs and its potential to cause peptic ulcers, we induced gastric ulcer on arthritic rats to analyze mangiferin’s gastric healing effect. After 14 days of treatment we noticed small increase of the lesion area of animals treated with mangiferin or ibuprofen, when compared to the animals... (Complete abstract click electronic access below)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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

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Periapical repair and apical bridging were studied in dog's teeth with incomplete root formation and induced chronic periapical lesions treated with different dressings. A total of 75 root canals from the upper and lower premolars of 4 dogs approximately 6 months of age were chemo-mechanically prepared and filled with the following dressings: antibacterial dressing consisting of a calcium hydroxide+camphorated p-monochlorophenol paste applied for 7 days and followed by monthly renewed calcium hydroxide paste as temporary dressing at 30, 60 and 90 days (Group A); antibacterial dressing consisting of camphorated p-monochlorophenol alone for 7 days, followed by temporary dressing with calcium hydroxide paste renewed at 30, 60 and 90 days (Group B). A control group (Group C) received no dressings. Ninety days after the last calcium hydroxide paste (Groups A, B) and after the last irrigation/aspiration (Group C), the animals were killed, the maxillae and mandibles were removed, and the material submitted to routine histological processing and examination. Both root canal dressings, were of fundamental importance for apical repair and bridging. The apical bridging was predominantly complete in Group A, incomplete in Group B, and absent in Group C. The calcium hydroxide+camphorated p-monochlorophenol combination gave better results than camphorated p-monochlorophenol alone.