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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Avalia??o do efeito do extrato hidroalco?lico das folhas de Anacardium occidentale L. em ratos submetidos ? colite ulcerativa

Pedro, Victor 16 December 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-07-12T17:50:11Z No. of bitstreams: 1 VictorPedro_DISSERT.pdf: 1715692 bytes, checksum: 8743cd75cd83a70845cf59f1359a71cf (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-07-20T18:39:05Z (GMT) No. of bitstreams: 1 VictorPedro_DISSERT.pdf: 1715692 bytes, checksum: 8743cd75cd83a70845cf59f1359a71cf (MD5) / Made available in DSpace on 2016-07-20T18:39:05Z (GMT). No. of bitstreams: 1 VictorPedro_DISSERT.pdf: 1715692 bytes, checksum: 8743cd75cd83a70845cf59f1359a71cf (MD5) Previous issue date: 2015-12-16 / a colite ulcerativa ? uma doen?a cr?nica caracterizada por umainflama??o na mucosa do intestino, na maioria dos casos acomete ? regi?o do c?lon e reto.Na terap?utica s?o utilizados f?rmacos como os aminossalicilatos e glicocorticoster?ides,mas em fun??o da baixa resposta e aos diversos efeitos colaterais promovidos por estes,revela a necessidade da busca de novas fontes de compostos ?teis no tratamento destadoen?a. As diversas partes da planta Anacardium occidentale Linn vem sendo utilizadas as?culos na medicina popular no auxilio de cicatriza??o de les?es de pele e mucosa, estudosrecentes comprovam o seu expressivo efeito antiulcerogenico. OBJETIVO: avaliar oefeito do extrato das folhas de Anacardium occidentale em ratos submetidos ? coliteulcerativa aguda. METODOLOGIA: foram utilizados 42 ratos Wistar machos,distribu?dos em 06 grupos, sendo Controle Negativo (C-), Controle Positivo (C+), Tratadocom Sulfassalazina (CS500) e Tratado com Extrato de A. occidentale nas doses de 50(Ao50), 100 (Ao100) e 200 mg/kg (Ao200). Todos os grupos foram submetidos a ColiteUlcerativa experimental, exceto o C-, al?m disto, C- e C+ receberam solu??o salina durante7 dias consecutivos, enquanto os demais grupos receberam seus respectivos tratamentosrespeitando o mesmo regime que os grupos controles. Neste estudo foi realizado diferentestipos de analise (macrosc?pica, histopatologica, morfom?trica e bioqu?mica) do tecidolesionado e caracterizado preliminarmente o extrato de A. ocidentale. RESULTADOS: oextrato ? rico em saponinas e compostos fen?licos, como flavonoides (quercetina ecanferol) e taninos. Os grupos CS500 e Ao100 apresentaram prote??o significativa a danosa lip?deos e prote?nas, dentre os grupos submetidos a colite ulcerativa experimental oAo100 foi o que obteve o menor escore em todos os parametros analisados.CONCLUS?O: o tratamento com 100 mg/kg de extrato de A. occidentale possibilitou umamelhor recupera??o dos animais, sendo mais eficiente que o tratamento com 500 mg/kg deSulfassalazina, provavelmente devido a combina??o do efeito anti-inflamat?rio,antioxidante, bactericida e anab?lico promovido pelos compostos bioativos presentes noextrato. O tratamento com 50 mg/kg de extrato parece n?o surtir efeito terap?uticosignificante, enquanto que o tratamento com 200 mg/kg do extrato, embora tenhaapresentado melhora significativa dos animais com colite ulcerativa, foi observado umposs?vel efeitos toxico t?pico exercido pelos compostos bioativos em excesso no extrato. / Ulcerative colitis is a chronic disease characterized by inflammation in the intestinal mucosa, in most cases affects the colon and rectum. The therapeutic drugs are used as aminosalicylates and glucocorticosteroids, but due to the low response and the various side effects caused by them, reveals the need to search for new sources of useful compounds in the treatment of this disease.The species Anacardium occidentale popularly known as cashew, has been used for centuries in folk medicine in the healing aid of skin and mucosa lesions.Recent studies show its expressive antiulcerogenic effect, what we instigated to assess the effect of the extract of A. occidentaleleaves in rats with acute ulcerative colitis, therefore, 42 rats were used male Wistar, divided into 06 groups, and Negative Control (C) Positive Control (C +), treated with Sulfasalazine (Sz500) and treated with Extract A. occidentale at doses of 50 (Ao50), 100 (Ao100) and 200 mg / kg (Ao200).All groups were submitted to experimental colitis Ulcerative except C-, moreover, C- and C + received saline via gavage for 7 consecutive days while the other groups received their respective treatments.Euthanasia of animals took place on the 8th day in which it was collected intestinal colon sample for later analysis macroscopic, histopathological, morphometric and biochemistry, as well as complementary collection of blood and liver tissue. The extract is rich in saponins and phenolic compounds such as flavonoids (quercetin and kaempferol) and tannins.When the Sz500 groups and 100 showed significant protection to damage to lipids and proteins, among the groups subjected to experimental ulcerative colitis, the animals Ao100 group obtained the lowest score in all parameters analyzed.Treatment with 100 mg / kg of A. occidentale extract seems to have a combination of antiinflammatory, antioxidant, bactericidal and anabolic promoted by the bioactive compounds present in the extract.However, it is necessary to investigate harder treating dose of 100mg / kg to higher doses compared to elucidate more properly the best therapeutic dosage ulcerative colitis.

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