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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

Efeitos de um extrato aquoso de buzhong yi qi wan (f?rmula magistral chinesa) na marca??o de constituintes sangu?neos com tecn?cio-99m, na morfologia e na fragilidade osm?tica de hem?cias de ratos Wistar

Giani, T?nia Santos 17 August 2007 (has links)
Made available in DSpace on 2014-12-17T14:13:23Z (GMT). No. of bitstreams: 1 TaniaSG.pdf: 391861 bytes, checksum: 1e1c65c6de1e587070af7bb8a918f265 (MD5) Previous issue date: 2007-08-17 / &#65279;Technetium-99m (99mTc) has been used to obtain several radiobiocomplexes utilized to aid in the diagnosis of diseases. Blood constituents, as red blood cells (RBC) and plasma proteins, have been labeled with 99mTc. Natural and synthetic drugs can alter the labeling of these constituents. The aim of this work was to investigate the possibility of a Buzhong YiQi Wan extract to alter (i) the labeling of blood constituents with 99mTc, (ii) the RBC morphology, and (iii) osmotic fragility of RBC withdrawn from Wistar rats. The data showed that the BYQW extract (i) could affect labeling of blood constituintes with 99mTc, (ii) could affect the membrane integrity decreasing the osmotic resistance and (iii) could not alter the shape of RBC. Probably, these findings would be associated &#65279;with properties of the substances present in the aqueous extract of BYQW. This study has multiple disciplinary aspects in knowledge areas: Radiobiology, Botanic, Phytotherapy and Haematology / &#65279;A pesquisa em Ci?ncias da Sa?de, assim como as avalia??es cl?nicas t?m sido favorecidas pelo uso de is?topos radioativos, sendo que o tecn?cio-99m (99mTc) tem sido o mais utilizado para obten??o de radiobiocomplexos com finalidade de diagn?stico. Diversas drogas naturais ou sint?ticas s?o capazes de interferir na marca??o de estruturas sangu?neas com 99mTc, assim como na biodistribui??o de outros radiobiocomplexos. Os procedimentos relacionados com a medicina tradicional chinesa tamb?m v?m ganhando destaque em todo o mundo. O objetivo deste estudo foi investigar o efeito da possibilidade de altera??es pelo extrato de Buzhong Yi Qi Wan (f?rmula magistral chinesa) nos constituintes do sangue marcados com 99mTc, (i) na marca??o de hem?cias e prote?nas plasm?ticas, (ii) na morfologia, e (iii) na fragilidade osm?tica de hem?cias de ratos Wistar. Foi observado, diminui??o significativa (p<0,05) na marca??o dos constituites sangu?neos com 99mTc, n?o altera??o da morfologia das hem?cias e modifica??o da curva de fragilidade das hem?cias (p<0,05). Esses efeitos poderiam estar associados com determinadas propriedades de compostos qu?micos presentes no extrato Buzhong Yi Qi Wan. O estudo tem car?ter multidisciplinar com a participa??o das seguintes ?reas do conhecimento: Radiobiologia, Bot?nica, Fitoterapia e Hematologia

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