Full text
| |
| Author(s): |
Alyne Vieira Barros
Total Authors: 1
|
| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Ciências Médicas |
| Defense date: | 2011-05-02 |
| Examining board members: |
Clarice Weis Arns;
Luciana Konecny Kohn;
Viviane Fongaro Botosso
|
| Advisor: | Clarice Weis Arns |
| Abstract | |
Study of medicinal plants with traditional knowledge has been a potential source of substances with significant pharmacological and biological activities. Guettarda angelica M. (Rubiaceae) is a medicinal plant where its roots are popularly used for various therapeutic purposes including veterinary. In vitro antimicrobial studies also related antibacterial activity of these roots against bacteria. Like viral infections still remain a serious worldwide problem, the ethnopharmacology provides an alternative approach for discovery of new antiviral agents. The aim of the present work was the antiviral study of extracts from roots bark, leaves and seeds of G. angelica against bovine (BoHV-1), swine (SuHV-1) and equine (EHV-1) herpesviruses, avian reovirus (ARV) and metapneumovirus (aMPV) The antiviral activity was tested in vitro on Vero and MDBK cells using the viral titer assay and the quantitative colorimetric assay through MTT. Initially, the maximum non-citotoxic concentration (MNCC) of extracts was determined in cells by observation of their morphological alterations. Studies through the reduction of viral titers showed that only the aqueous extract from seeds (AEs) presented an antiviral activity against BoHV-1, SuHV-1, EHV-1 and ARV. Then, this extract was further evaluated by MTT method to determine the CC50 (50% cytotoxic concentration), IC50 (50% inhibitory concentration) and SI (selectivity index). The values of CC50 of AEs extract were 400.60 and 920.60 to Vero and MDBK cells, respectively. And the values of IC50 and SI were 22.79 and 40.39 for BoHV-1; 91.30 e 10.08 for SuHV-1; 19.95 and 20.08 for EHV-1; 23.59 and 17.00 for ARV. These results indicate that the seeds from G. angelica contain composts with promising antiviral activity and low toxicity (AU) | |
| FAPESP's process: | 09/01650-3 - In vitro evaluation of the antiviral potential of plant extracts from Guettarda angelica against animal viruses |
| Grantee: | Alyne Vieira Barros |
| Support Opportunities: | Scholarships in Brazil - Master |