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2.
Salud(i)ciencia (Impresa) ; 18(7): 666-669, nov. 2011.
Article in Spanish | LILACS | ID: lil-654093

ABSTRACT

Se demuestra la elevada prevalencia de Chagas en comunidades wichi y criolla de una zona del Gran Chaco argentino, resaltando la necesidad de un control sustentable y continuo


Subject(s)
Chagas Disease/diagnosis , Chagas Disease/epidemiology , Chagas Disease/ethnology , Chagas Disease/prevention & control , Indigenous Peoples
3.
Mem. Inst. Oswaldo Cruz ; 105(5): 621-627, Aug. 2010. ilus, graf, tab
Article in English | LILACS | ID: lil-557220

ABSTRACT

Chagas disease, which is caused by Trypanosoma cruzi, affects nearly 16 million people in Latin America and causes 75-90 million people to be at risk of infection. The disease is urbanizing and globalizing due to frequent migrations. There are regions of high prevalence of infection, including the north-eastern provinces of Argentina and the entire phytogeographic region known as the Gran Chaco. In the province of Chaco, Argentina, there are places inhabited by native populations such as the Wichi and Toba communities, among others. Many Creole populations resulting from miscegenation with European colonists and immigrants coexist within these communities. It has been widely accepted that in the chronic phase of the disease, between 25-30 percent of individuals develop some form of cardiac disease, with the right bundle-branch block being the most typical condition described so far. The aim of this work was to study the prevalence of Chagas infection and its electrocardiographic profile in the Wichi and Creole populations of Misión Nueva Pompeya, in the area known as Monte Impenetrable in Chaco, to determine the prevalence and the pattern of heart diseases produced by Chagas disease in this region.


Subject(s)
Adolescent , Adult , Child , Child, Preschool , Humans , Infant , Infant, Newborn , Middle Aged , Young Adult , Chagas Disease , White People/statistics & numerical data , Indians, South American/statistics & numerical data , Antibodies, Protozoan/blood , Argentina , Chagas Cardiomyopathy , Chagas Cardiomyopathy , Chagas Cardiomyopathy/ethnology , Chagas Disease , Chagas Disease/ethnology , Electrocardiography , Prevalence , Rural Population , Trypanosoma cruzi/immunology , Urban Population
4.
Rev. Soc. Bras. Med. Trop ; 38(1): 53-55, jan.-fev. 2005. ilus
Article in English | LILACS | ID: lil-420214

ABSTRACT

Se descrevem 3 gestantes com a doença de Chagas aguda. Duas gestantes infetadas no 3º trimestre de gestação não tiveram crianças infetadas. O 3º filho, doquella madre foi infetada no 1º trimestre, nasceu com doença de Chagas congénita. Estes resultados inducem a investigação sobre os fatores de riscos da transmição e sobre as desições médicas na conducção dos casos de gestantes com a doença de Chagas aguda.


Subject(s)
Adolescent , Adult , Female , Humans , Infant, Newborn , Male , Pregnancy , Chagas Disease/transmission , Infectious Disease Transmission, Vertical , Pregnancy Complications, Parasitic , Acute Disease , Chagas Disease/congenital , Nitroimidazoles/therapeutic use , Pregnancy Trimester, First , Pregnancy Trimester, Third , Pregnancy Complications, Parasitic/parasitology , Risk Factors , Trypanocidal Agents/therapeutic use
5.
La Habana; s.n; 1999. 20 p.
Non-conventional in Spanish | LILACS | ID: lil-259516

ABSTRACT

En el presente trabajo se expone la importancia de los productos obtenidos a partir de fuentes naturales, y la tendencia de su comercialización a nivel mundial. Se hace un análsis de la estrategia seguida en las investigaciones de plantas medicinales y otras fuentes naturales en Cuba: asi como los resultados obtenidos y los productos de mayor interes


Subject(s)
Commerce , Plants, Medicinal
6.
Bol. chil. parasitol ; 53(1-2): 3-9, ene.-jun. 1998. graf
Article in Spanish | LILACS | ID: lil-233090

ABSTRACT

The specific therapy in chagas' disease is useful in acute and neonatal infection and in children under three years old. The results of antiparasitic treatment during chronic infection are still controversial. It will be interesting to analyze the serological behavior in patients treated during chronic infection, to advance in the search of evolutive markers and markers of therapeutic efficacy. In the present work we have measured the antibody response by conventional serology and the response to partially purified T. cruzi antigens in chagasic patients who received nifurtimox or benznidazol 2 to 20 years before. The results showed that, by indirect immunofluorescence in 20 percent of treated patients the antibody levels were below the established cut off (1:32). By indirect hemagglutination 55 percent of treated patients showed this serological behavior. In this group a high number of discordant results was observed. By immunoenzimatic assay it was possible to detect a significative decrease of serologic reactivity to a partially purified acidic antigen (F IV) and to exoantigen of T. cruzi. It will be interesting to perform longitudinal surveys employing these antigens, to go further in the knowledge of possible immunological evolutive markers in Chagasïdisease


Subject(s)
Humans , Child, Preschool , Child , Adolescent , Adult , Middle Aged , Antibodies, Protozoan , Antigens, Protozoan , Chagas Disease/immunology , Trypanosoma cruzi/immunology , Chagas Disease/drug therapy , Fluorescent Antibody Technique , Nifurtimox/pharmacology , Nitroimidazoles/pharmacology , Hemagglutination Tests , Trypanosoma cruzi/pathogenicity
7.
Medicina (B.Aires) ; 57(2): 161-8, 1997. tab, graf
Article in Spanish | LILACS | ID: lil-201847

ABSTRACT

La respuesta inmune de los infectados chagásicos difere cualitativa y cuantivamente segün el estadio de la enfermedad. La medición con fines clínicos de estas diferencias depende de la posibilidad de contar con preparaciones antigénicas adecuadas. Con el objeto de avanzar en este sentido, se estudió el comportamiento de distintos antígenos (Ag) del T. cruzi en pacientes chagásicos agudos y crónicos perttencientes a los grupos O (GO) y 1 (G1). Se midió el nivel de anticuerpos (Ac) totales por sorología convencional (hemaglutinación e inmunofluorescencia (IF)), y por enzimoinmunoanálisis, los títulos de Ac contra el extracto crudo de formas epimastigotes del parásito (F 105) y contra una fracción semipurificada por cromatoenfocado analítico (F IV). En los pacientes agudos se observó mediante la reccion de ELISA con F 105, un 60 por ciento de resultados positivos, mientras que la serología convencional reveló un alto porcentaje de sueros con ambas reacciones negativas (61 por ciento) y 35 por ciento de discordantes. Luego del tratamiento antiparasitario en los pacientes agudos, hubo una disminución en los títulos de Ac hacia cualquiera de los Ag estudiados. En los pacientes crónicos los resultados mostraron una tendencia de los individuos de G1 a presentar mayores títulos de Ac tanto por IF frente al parásito total, como por enzimoinmunoálisis (ELISA) frente a la facción F IV, con respecto a los del GO. Esta tendencia fue más evidente cuando se combinaron los resultados de ambas técnicas. En efecto, el 22 por ciento de los sueros del G1 presentaron títulos por IF = 1: 128, e índices por ELISA = 3,5, mientras que sólo el 2 por ciento de los sueros del GO presentó esta característica. Niveles más bajos no permitieron discriminar poblaciones. La conjugación de los métodos tradicionales con la utilización de técnicas que empleen antígenos purificados o sintéticos puede resultar en una mejora en la calidad y en la utilidad del inmunodiagnóstico.


Subject(s)
Adult , Child , Child, Preschool , Infant , Middle Aged , Humans , Adolescent , Animals , Chagas Disease/immunology , Trypanosoma cruzi/immunology , Enzyme-Linked Immunosorbent Assay , Fluorescent Antibody Technique, Indirect , Hemagglutination Tests
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