Browsing Artículos by Issue Date

Now showing items 1-20 of 419

Seroprevalence and sociocultural conditionants of Chagas disease in school aged children of marginal zones of Asunción.

Rojas de Arias, Gladys Antonieta; Vera de Bilbao, Ninfa; Maldonado, Marisel; Yaluff, Gloria; Simancas, Luis (jul-ago, 1)

Chagas disease is becoming a public health problem in Latin America due to the wide distribution, the high prevalence, the magnitude of the damage caused and the difficulties to control it. In Paraguay, the disease is ...
Chemical composition and insecticidal activity of hedeoma mandoniana essential oils.

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 ...
A seroepidemiologic survey of Chagas disease in two Paraguayan villages.

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.
Análisis de las posibles influencias meteorológicas sobre el comportamiento de Lystrophis dorbignyi Duméril, Bibron & Duméril

Yanosky, Ángel Alberto; Chani, José María; Manolidis, N. (1987)

En esta primera aproximación intentamos destacar aquellos parámetros meteorológicos que pudiesen influir en el comportamiento de Lystrophis dorbignyi. El comportamiento de la especie fue medido como enterradas (EN), muy ...
Preliminary pharmacological studies on Eugenia uniflora leaves: xanthine oxidase inhibitory activity.

Rojas de Arias, Gladys Antonieta; Schmeda-Hirschmann, Guillermo; Theoduloz, Cristina; Franco, Lucía; Ferro B., Esteban (Elsevier Scientific Publishers Ireland Ltd., 1987)

Eugenia uniflora is widely used in Paraguayan folk medicine. A hydroalcoholic extract of the leaves showed some central nervous system activity in hippocratic screening when given intraperitoneally, but little to no acute ...
Possible dual mimicry of bothrops and micrurus by the colubrid, lystrophis dorbignyi.

Yanosky, Alberto; Chani, José María (1988)

This mimetic system includes species commonly called coral snakes and false coral snakes. Astort (1983) has proposed other mimetic systems in South America comprising models in the genus Bothrops and their presumed mimics ...
The effects of melia azederach on triatoma infestans bugs.

Rojas de Arias, Gladys Antonieta; Schmeda-Hirschmann, Guillermo (1988)
La ofidiofauna de la Reserva Ecológica El Bagual, formosa abundancia, utilización de los hábitats y estado de situación.

Yanosky, Ángel Alberto (1989)

From records made during eight months consisting of direct observations and some captures, the snake fauna was analyzed to know specific composition, abundance and states of conservation. Each species was associated to the ...
Constitutive heterochromatin polymorphism of T. infestans strains, a main vector insect of chagas disease.

Rojas de Arias, Gladys Antonieta; Hirai, Hirohisa; Shono, Yoshinori; Tada, Isao (1990)

Chromosome observations of triatomine bugs known as medically important vectors of American trypanosomiasis (Chagas' disease) were attempted. We demonstrated by the C-banding technique that a Brazilian strain of Triatoma ...
Application of two types of T. cruzi amastigotes of different virulence to ELISA for Chagas disease.

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- ...
A survey of Medicinal plants of Minas Gerais, Brazil

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 ...
Temperaturas internas y frecuencias de muda en crías de Tupinambis teguixin (Reptilia, Teiidae) bajo condiciones controladas.

Yanosky, Ángel Alberto; Mercolli, Claudia (1991)

Internal or cloacal temperatures (CT) in tegu offspring were studied in an environmental chamber and the were higher than ground temperatures (GT) when these were low, except for a GT of 26.5ºC for which CT was similar. ...
Preliminary observations on the reproductive cycle of female tegu lizards (Tupinambis teguixin).

Yanosky, Ángel Alberto; Mercolli, Claudia (1991)

The black tegu lizard, Tupinambis teguixin (Linnaeus 1758) is a common element in the wild all throughout Southamerica except for Chile. This teiid lizard was outstood by earlier travellers such as Sir Charles Waterton who ...
Estimaciones sobre la selección del medio y el nivel de actividad del tapir (Tapirus terrestris) en la reserva ecológica El Bagual

Yanosky, Ángel Alberto; Mercolli, Claudia (1991)

Estimates o f tapir (Tapirus terrestris) habitar selection and activity level at El Bagual Ecological Reserve (Formosa, Argentina). Tapir activity levels were estimated by track counts on four different plant communities ...
Treatment of dipetalonema gracile in cebus apella by ivermectin.

Rojas de Arias, Gladys Antonieta; Sakamoto, Macato; Fujita, Osamu; Schinini, Alicia; Inchaustti, Alba; Higuchi-Sanabria, R.; Moreno, Ricardo A. (1991)

The microfilaricidal effect of ivermectin was studied on Cebus apella infected with Dipetalonema gracile in Paraguay. Nine monkeys were treated with ivermectin at the dosage of 200μg/kg body weight by single subcutaneous ...
Animal reservoirs for T. cruzi infection in an endemic area of Paraguay

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, ...
A screening method for natural products on triatomine-bugs.

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 ...
Tegu lizard (Tupinambis teguixin) management in captivity at El Bagual Ecological Reserve, Argentina.

Yanosky, Ángel Alberto; Mercolli, Claudia (1992)

The breeding program of tegu lizards (Tuploambis teguixin) in captivity at El Bagual Ecological Reserve, Argentina, was established to develop guidelines for captive propagation of the species for which there is no information ...
Preferencias de hábitats y actividad en el coatí común (Nasua nasua) en la Reserva Ecológica el Bagual (Argentina)

Yanosky, Ángel Alberto; Mercolli, Claudia (1992)

Ring-tailed coati activity levels and habitat use were estimated by track counts on four habitat types at El Bagual Ecological Reserve, northeasthern Argentina during 1989-1990. Activity index and habitat use index were ...
Phlebotomine sand fly species in Paraguay and their infection with leishmania.

Rojas de Arias, Gladys Antonieta; Hashiguchi, Yoshihisa; Chillert, Tom M.; Inchaustti, Alba; Kawabata, M.; Bruce, Alexander (1992)

Nine species of sandflies, Lutzomyia (Nyssomyia) whitmani (Antunes and Countinho), Lutzomyia (Nyssomyia) intermedia (Lutz and Neiva), Lutzomyia (Psathyromyia) shannoni (Dyar), Lutzomyia migonei (Franca), Lutzomyia (Pintomyia) ...

Now showing items 1-20 of 419

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