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Browsing by Author "1261551"

Browsing by Author "1261551"

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  • Rojas de Arias, Gladys Antonieta; Schmeda-Hirschmann, Guillermo (1992)
    A simple method for screening natural products on triatomine bugs, vectors of Chagas' disease, was developed using fourth instar Rhodnius neglectus nymphs as an insect model. The statistical method of randomized blocks and ...
  • Rojas de Arias, Gladys Antonieta; Monzón, María Idalia; Velázquez de Saldivar, Graciela; Guillen, Elizabeth; Arrua T., Néstor (1984)
    A survey was conducted at two widely separated Paraguayan villages during February-May 1982 in order to help define tk Chagas’ disease problem in that country. This article reports the results of that survey.
  • Rojas de Arias, Gladys Antonieta; Schmeda-Hirschmann, Guillermo (Elsevier Scientific Publishers Ireland Ltd., 1990)
    A list of fifty-two plant species used for medicinal purposes or to control arthropods by peasants near Belo Horizonte, Minas Gerais (Brazil) has been compiled. Preparation procedures are also noted. The use of plants for ...
  • Rojas de Arias, Gladys Antonieta; Ferreira, María Elena; Fournet, Alain; Yaluff, Gloria; Inchausti, Alicia; Février, Anne; Hocquemiller, Reynald; Weachter, Anne-Isabelle (1998)
    Bioactivity-directed fractionation of the MeOH extract of the stem barlts of Rohia emorginoto resulted in the ¡solation of six compounds, four acetogenins, rolliniastatin-l. sylvaticin, squamocin, and rollidecin B, one ...
  • Rojas de Arias, Gladys Antonieta; Fournet, Alain; Ferreira, María-Elena; Torres de Ortíz, Susana; Inchausti, Alba; Yaluff, Gloria; Quilhot, Wanda; Fernández, Ernesto; Hidalgo, María Elena (1997)
    Three secondary metabolites isolated from Chilean lichens, (+) usnic acid, pannarine and 1′-chloropannarine, were tested against promastigotes forms of three strains of Leishmania ssp. Pannarine and 1′-chloropannarine ...
  • Rojas de Arias, Gladys Antonieta; Scribano, Rossana (2010)
    En el Paraguay las poblaciones más pobres no poseen la capacidad para reaccionar oportunamente ante los cambios, ni tampoco disponen de ahorros para las emergencias, por lo tanto son las más vulnerables al cambio climático. ...
  • Rojas de Arias, Gladys Antonieta; Miles, Michael A.; Feliciangeli, M. Dora (2003)
    Chagas' disease is a parasitic infection that has far reaching consequences for public health and national economies in Latin America. The latest molecular typing methods may help in developing targeted, effective control ...
  • Rojas de Arias, Gladys Antonieta; Fujita, Osamu; Sanabria, Luis; Inchaustti, Alba; Tomizawa, Yasushi; Oku, Yuzaburo (1992)
    Animal reservoirs for Tryponosoma cruzi infection were investigated in 5 communities in the Department of San Pedro, currently one of Paraguay's most highly endemic areas. A totalot.112 domestic animals (37 cattle, 2 horses, ...
  • Rojas de Arias, Gladys Antonieta; Rolón, Miriam; Vega, Celeste; Santos, Karla K.A.; Matias, Edinardo F. F.; Tintino, Saulo R.; Souza, Celestina E. S.; Braga, María F. B. M.; Guedes, Gláucia M. M.; Costa, José G. M.; Menezes, Irwin R. A.; Coutinho, Henrique D. M. (2012)
    Chagas disease is caused by Trypanosoma cruzi, being considered a public health problem. An alternative to combat this pathogen is the use of natural products isolated from fruits such as Eugenia uniflora, a plant used by ...
  • Rojas de Arias, Gladys Antonieta; Thouvenel, Céline; Gantier, Jean-Charles; Duret, Phillipe; Fourneau, Christofe; Hocquemiller, Reynald; Ferreira, María-Elena; Fournet, Alain (Published online in Wiley InterScience, 2003)
    An alkaloidal extract of the stem barks of Zanthoxylum chiloperone var. angustifolium exhibited antifungal activity against Candida albicans, Aspergillus fumigatus and Trichophyton mentagrophytes var. interdigitale using ...
  • Rojas de Arias, Gladys Antonieta; Ferreira, María Elena; Vera de Bilbao, Ninfa; Nakayama, Héctor; Torres, Susana; Schinini, Alicia; Yaluff, Gloria; Guyc, Isabelle; Heinzen, Horacio; Fournet, Alain (2010)
    The bark infusion of H. apiculata are used to treat wound healing related to cutaneous leishmaniasis and as anti-inflammatory. Aim of the study: To isolate, purify active constituents of H. apiculata stem bark, and evaluate ...
  • Rojas de Arias, Gladys Antonieta; Maldonado, Marisel; Ichinose, Yoshio; Samudio, Margarita; Sakamo, Makoto; Moreno Azorero, Ricardo; Kanbara, Hiroji (1990)
    Trypanosoma cruzi amastigotes derived from fibroblast cultures and from cell-free liquid medium were comparatively evaluated as solid-phase antigens of ELISA for Chagas' disease. Amastigotes were obtained from the high- ...
  • Rojas de Arias, Gladys Antonieta; Fröhlich, Stephan. J.; Miño de Kaspar, Herminia; Perán, Rosa; Vera de Bilbao, N.; Schinini, Alicia; Sanchez Insfran, Nestor; Moreno Azorero, Ricardo; Heidenkummer, P. H.; Klauß, Volker (1997)
    Background: In Central and South America, Chagas' disease is of great epidemiologic importance. The epidemiologic agent is represented by Trypanosoma cruzi, a monocellular parasite, instrumental in human infection is the ...
  • Rojas de Arias, Gladys Antonieta; Egly Feresin, Gabriela; Tapia, Alejandro; Sortino, Maximiliano; Zacchino, Susana; Inchausti, Alba; Yaluff, Gloria; Rodriguez, Jaime; Theoduloz, Cristina; Schmeda-Hirschmann, Guillermo (2003)
    The benzoquinone embelin and four alkyl phenols were isolated from an Argentinean collection of Oxalis erythrorhiza. 3-Heptadecyl-5-methoxy-phenol is reported for the first time. The structures were determined by spectroscopic ...
  • Rojas de Arias, Gladys Antonieta; Vega, María Celeste; Rolón, M.; Castillo-Garit, Juan Alberto; Toro-Cortés, Oremia del; Casañola-Martin, Gerardo M.; Escario, José A.; Gómez-Barrio, Alicia; Marrero-Ponce, Yovani; Torrens, Francisco; Abad, Concepción (2015)
    Two-dimensional bond-based bilinear indices and linear discriminant analysis are used in this report to perform a quantitative structure-activity relationship study to identify new trypanosomicidal compounds. A data set ...
  • Rojas de Arias, Gladys Antonieta; Ferro, Esteban A.; Ferreira, María Elena; Simancas, L. C. (1999)
    In a field study carried out in three rural communities in Paraguay in a zone endemic for Chagas disease, we implemented three different vector control interventions--spraying, housing improvement, and a combination of ...
  • Rojas de Arias, Gladys Antonieta; Vilaseca, Antonio; Guy, Isabelle; Charles, Brigitte; Guinaudeau, Hélène; Fournet, Alaine (16 (4) Jul)
    The analysis by GC/MS of samples of essential oils obtained from aerial parts of Hedeoma mandoniana allowed the identification of 58 components. The main components were pulegone (37–46%), 1,8-cineole (10–14%), linalool ...
  • Rojas de Arias, Gladys Antonieta; Fournet, Alain; Charles, B.; Bruneton, J. (1996)
    The composition of essential oils from two muña, Bolivian medicinal plants, derived from Minthostachys andina and Hedomea mandonianum, were analyzed by gas chromatography/mass spectrometry. Major differences were observed ...
  • Rojas de Arias, Gladys Antonieta; Vega, María Celeste; Rolón, Miriam S.; Abad-Franch, Fernando; Santos, Walter S. (2011)
    BACKGROUND: Vector control has substantially reduced Chagas disease (ChD) incidence. However, transmission by household-reinfesting triatomines persists, suggesting that entomological surveillance should play a crucial ...
  • Rojas de Arias, Gladys Antonieta; Lehane, M. J.; Schofield, C. J.; Fournet, Alain (Rio de Janeiro : Instituto Oswaldo Cruz, 2003)
    We investigated the residual efficacy of four insecticide formulations used in Chagas disease vector control campaigns: cyfluthrin 12.5% suspension concentrace (SC), lambda-cyhalothrin 10% wettable powder (WP), deltamethrin ...