Artepillin C, drupanin, aromadendrin-4'-O-methyl-ether and kaempferide from Brazilian green propolis promote gastroprotective action by diversified mode of action.

ETHOPHARMACOLOGICAL RELEVANCE: The propolis is extensively used in folk medicine in natura or to prepare pharmaceutical formulations since ancient time to improve health or prevent diseases, among them gastrointestinal disorders. Aiming to contribute in the scientific validation about the popular use of Brazilian Green propolis (BGP) against gastritis and gastric ulcer, this work evaluated the antiulcer potential of isolated compounds from BGP, three prenylated p-coumaric acid derivatives and two flavonoids, respectively named: 3,5 diprenyl-4-hydroxycinnamic acid (artepillin C) (1), 3-prenyl-4-dihydroxycinnamoiloxy cinnamic acid (baccharin) (2), 3-prenyl-4-hydroxycinnamic acid (drupanin) (3), aromadendrin-4'-O-methyl-ether (4) and kaempferide (5). MATERIAL AND METHODS: The compounds were characterized by nuclear magnetic resonance and mass spectrometry. Their gastroprotective effects were evaluated against ethanol/HCl- and indomethacin-induced ulcer in mice. Further, histological, histochemical, oxidative and inflammatory parameters were analyzed at ulcerated tissue. Acid antisecretory activities also were also assessed. RESULTS: Compound 2 did not reduce the ethanol/HCl- induced ulcer at 30 mg/kg (p.o), whereas the minimum oral gastroprotective doses of 1, 3, 4 and 5 were 0.3, 0.3, 3 and 3 mg/kg, respectively. Besides, these compounds prevented ethanol/HCl-induced ulcer by intraperitoneal route, as well as indomethacin-induced ulcer by oral route. The gastroprotection was accompanied by normalization of superoxide dismutase, catalase and glutathione-S-transferase activities and reduction in myeloperoxidase activity. Moreover, the compounds 4 and 5 increased the gastric mucin content and 1 reduced TNF amount. Furthermore, 1, 3, 4 and 5 decreased volume, pH, total acidity and pepsin activity of the gastric juice from rats. CONCLUSIONS: Together, our findings showed a diversified mode of action elicited by 1, 3, 4 and 5 on the gastroprotection and contribute to explain the anti-ulcer activity reported for BGP.

Avaliação da Gestão da Qualidade de uma Agência Transfusional / Quality Management Assessment of a Transfusion Agency

Introdução: O controle da qualidade, quando implantado, deve assegurar o uso dos hemocomponentes livre de possíveis reações transfusionais. Inúmeras regulamentações na área de hemoterapia vêm direcionando as metodologias que devem ser utilizadas pelas agências transfusionais de forma a minimizar os riscos ao paciente/receptor. Objetivo: Este estudo teve como objetivo realizar a avaliação da gestão da qualidade de uma agência transfusional localizada no município de Balneário Camboriú-SC. Materiais e Métodos: Como metodologia central foi utilizado o Ciclo PDCA, do inglês Plan, Do, Check, Act, com o objetivo de planejar e organizar as ações do gerenciamento da qualidade, observar as melhorias e quando necessário auxiliar na atuação sobre as inconformidades encontradas. Resultados: As informações da rotina hemoterápica da instituição foram obtidas por meio de 15 visitas técnicas. Através dos Roteiros de Inspeção Técnica em Serviços de Hemoterapia foram detectadas conformidades em 80% dos requisitos, destacando-se as questões de biossegurança, área física e reagentes, enquanto as não-conformidades foram observadas principalmente no item Gestão da Qualidade. Neste sentido, foram utilizadas as Ferramentas da Qualidade para correções das não-conformidades. Após a execução de 11 ações de melhoria, o percentual de conformidades no item Gestão da Qualidade foi de 100%. Conclusão: Inconformidades foram encontradas na agência transfusional avaliada, entretanto, não foram observados riscos nos serviços de saúde fornecidos à população através dos itens avaliados. (AU)

Introduction: Quality control, when implemented, should ensure the use of blood components without the presence of transfusion reactions. Numerous regulations in hemotherapy area have driven the approaches used by transfusion agencies to minimize the risks for the patient/ receptor. Objective: To carry out the evaluation of the quality management of a transfusion agency located in the city of Camboriú, SC, Brazil. Material and Methods: The PDCA Cycle (Plan, Do, Check, Act) was used to plan and organize the quality management actions, to observe the improvements and, where necessary, to assist in the resolution of detected issues. Results: Information from the hemotherapic routine of the institution was obtained through 15 technical visits. Technical Inspection Checklists in the Hemotherapy Service indicated a compliance of 80% with the norms. related to biosafety , physical area and reagents, while most of the non-conformities were observed in the Quality Management sector. Thus, Quality Tools were used for correction of nonconformities. After the execution of 11 improvement actions, the compliance percentage of the Quality Management item was found to be 100%. Conclusion: Despite the nonconformities found in the transfusion agency under study, no significant risks in the health care provided to the population were observed. (AU)