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| ANDRADE,PRISCILA M. DE; MELO,DAIANA C. DE; ALCOBA,ANA ELISA T.; FERREIRA JÚNIOR,WALNIR G.; PAGOTTI,MARIANA C.; MAGALHÃES,LIZANDRA G.; SANTOS,TAINÁ C.L. DOS; CROTTI,ANTÔNIO E.M.; ALVES,CASSIA C.F.; MIRANDA,MAYKER L.D.. |
| Abstract Leishmaniasis is an endemic disease caused by protozoa of the genus Leishmania, which affects around two million people worldwide. One major drawback in the treatment of leishmaniasis is the emergence of resistance to current chemotherapeutics. Medicinal and aromatic plants constitute a major source of natural organic compounds. In this study, the leaf essential oil of Cryptocarya aschersoniana was obtained by hydrodistillation in a Clevenger-type apparatus, and the chemical composition was analyzed by GC-MS and GC-FID. The essential oil of these species was predominantly constituted by monoterpene hydrocarbons (48.8%). Limonene (42.3%), linalool (9.7%) and nerolidol (8.6%) were the main constituents in the oil of C. aschersoniana. The in vitro... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cryptocarya aschersoniana; Lauraceae; Essential oil; Leishmania amazonensis; Cytotoxic activity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602671 |
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| ESTEVAM,ELISÂNGELA B.B.; DEUS,ISABELLA P.B. DE; SILVA,VANESSA P. DA; SILVA,ELIZABETH A.J. DA; ALVES,CASSIA C.F.; ALVES,JOSÉ MILTON; CAZAL,CRISTIANE M.; MAGALHÃES,LIZANDRA G.; PAGOTTI,MARIANA C.; ESPERANDIM,VIVIANE R.; SOUZA,ALEX F.; MIRANDA,MAYKER L.D.. |
| ABSTRACT Leishmaniasis and trypanosomiasis are globally widespread parasitic diseases which have been responsible for high mortality rates. Since drugs available for their treatment are highly hepatotoxic, nephrotoxic and cardiotoxic, adherence to therapy has been affected. Thus, the search for new, more effective and safer drugs for the treatment of these diseases is necessary. Natural products have stood out as an alternative to searching for new bioactive molecules with therapeutic potential. In this study, the chemical composition and antiparasitic activity of the essential oil from Protium ovatum leaves against trypomastigote forms of Trypanosoma cruzi and the promastigote forms of Leishmania amazonensis were evaluated. The essential oil was promising... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trypanosoma cruzi; Leishmania amazonensis; Essential oil; Protium ovatum; Parasitic diseases. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603005 |
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| Coêlho,Zirlane Castelo B; Teixeira,Maria Jania; Mota,Erika Freitas; Frutuoso,Mércia Sindeaux; Silva,João Santana da; Barral,Aldina; Barral-Netto,Manoel; Pompeu,Margarida Maria L. |
| The initial encounter of Leishmania with its host's immune system is important in the outcome of infection. Previous studies have shown that PBMCs from healthy volunteers (HV) exposed to Leishmania differ in IFN-γ production. We have expanded such observations evaluating the profile and kinetics of cytokines (IFN-γ, IL-12p70, IL-10, IL-13), chemokines (CCL5, CCL3, CCL4, CXCL10), and chemokine receptors (CCR1,CCR5, CXCR3, CCR4) in vitro L. amazonensis-stimulated of HV's PBMCs. HVs were divided in groups of high (HR) or low (LR) IFN-γ responders. In both groups, HR and LR, after L. amazonensis infection there was a predominance of IL-10 and IL-13 over IFN-γ production, while IL-12 was produced in similar amount. Regarding chemokines, a more striking... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leishmania amazonensis; Interleukin-10; Interleukin-13. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000500009 |
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| Melo,E.J.T.; Beiral,H.J.. |
| Toxoplasma gondii, Leishmania amazonensis and Trypanosoma cruzi are obligate intracellular parasites that multiply until lysis of host cells. The present study was undertaken to evaluate the effect of hydroxyurea (an inhibitor of cell division at the G1/S phase) on the multiplication of L. amazonensis, T. gondii, and T. cruzi in infected host cells. Infected cells were treated with hydroxyurea (4 mM) for 48 h. Hydroxyurea arrested intracellular multiplication of all infective forms of the parasites tested. In treated cultures, the percent of infected host cells decreased (50-97%) and most intracellular parasites were eliminated. Ultrastructural observations showed no morphologic change in host cells while intracellular parasites presented drastic... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Toxoplasma gondii; Trypanosoma cruzi; Leishmania amazonensis; Hydroxyurea. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000100009 |
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| Cargnin,Simone Tasca; Staudt,Andressa Finkler; Menezes,Camila; Azevedo,Ana Paula de; Fialho,Saara Neri; Tasca,Tiana; Teles,Carolina Bioni Garcia; Gnoatto,Simone Baggio. |
| Trichomonas vaginalis and Leishmania spp. are protozoal species responsible for millions of cases of parasitic diseases worldwide. Considering the potential of natural products and the need for more effective and less toxic alternatives to treat trichomoniasis and leishmaniasis, this study aimed to evaluate the effect of two series of triterpenes derivatives with different modifications at C-3 and C-28 positions of the ursolic acid (UA) and betulinic acid (BA) against trophozoites of Trichomonas vaginalis and promastigotes forms of Leishmania (L.) amazonensis. The compounds modified just at C-3 were the most active. The 3β-acetyl betulinic acid (1b) reduced the trophozoites viability of T. vaginalis at 74%, followed by the 3-oxo ursolic acid and 3-oxo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Betulinic acid; Leishmania amazonensis; Semisynthesis; Trichomonas vaginalis; Ursolic acid. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100596 |
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| Kauffmann,Carla; Giacomin,Ana Caroline; Arossi,Kelen; Pacheco,Leandra Andressa; Hoehne,Lucélia; Freitas,Elisete Maria de; Machado,Gérzia Maria de Carvalho; Cavalheiro,Marilene Marcuzzo do Canto; Gnoatto,Simone Cristina Baggio; Ethur,Eduardo Miranda. |
| In South American folk medicine members of the genus Myrciaria are used for the treatment of malaria, diarrhoea, asthma, inflammation and post-partum uterine cleansing. The aim of this work was to evaluate its antileishmanial properties (in vitro) of essential oil derived from leaves of Myrciaria plinioides D. Legrand, a plant species that is native in South of Brazil. The essential oil was obtained by hydro-distillation using fresh leaves of M. plinioides. The chemical composition of this essential oil (MPEO, M. plinioides essential oil) was determined by gas chromatography coupled to mass spectrometry (GC-MS). MPEO was assayed in vitro for antileishmanial properties against promastigotes of Leishmania amazonensis and Leishmania infantum, and for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antileishmanial activity; Myrciaria plinioides; Myrtaceae; Leishmania amazonensis; Leishmania infantum. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100558 |
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