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Bol. malariol. salud ambient ; 56(1): 1-10, jul. 2016. ilus, tab
Artigo em Espanhol | LILACS | ID: biblio-838998

RESUMO

Para determinar la prevalencia de enteroparásitos en individuos seropositivos a los virus HTLV-I/II, se seleccionaron aleatoriamente 75 donantes que asistieron a los Bancos de Sangre de dos instituciones sanitarias del municipio Maracaibo, Venezuela. Se contactaron personalmente 50 individuos seropositivos a virus HTLV-I/II (grupo muestra) y 25 seronegativos (grupo control), quienes aportaron una muestra fecal para diagnóstico parasitológico. Estas fueron sometidas al examen al fresco con solución salina fisiológica (SSF) al 0,85%, tinción temporal de Lugol y técnica de concentración con formol-éter (Ritchie). Además se realizó cultivo en Agar Nutritivo (método de Arakaki) para investigar la presencia de larvas de Strongyloides stercoralis. Se determinó una prevalencia general de enteroparásitos en el grupo muestra de 54% y 44% en el grupo control. Predominó el monoparasitismo entre todos los individuos estudiados. Las especies identificadas fueron: Blastocystis spp. 47,3% y 15,4%, Entamoeba coli 21% y 15,4%, Endolimax nana 13% y 53,8%, Complejo Entamoeba 10,5% y 15,4%, Giardia intestinalis 5,2% y 0%, y Entamoeba hartmanni 2,6% y 0% en el grupo muestra y grupo control, respectivamente. No se detectó Strongyloides stercoralis ni otros helmintos intestinales, en los individuos estudiados. Blastocystis spp. fue el más frecuente en los pacientes seropositivos (diferencia estadísticamente significativa) que en el grupo control, lo que pudiese relacionarse con una mayor persistencia de este cromista en pacientes coinfectados con HTLV-I/II. Se puede concluir que el estatus serológico del individuo HTLV-I/II positivo parece no influir en la presencia o adquisición de parásitos intestinales.


Prevalence of intestinal parasites in seropositive and seronegative to HTLV I/II viruses


The prevalence of intestinal parasites in individuals seropositive for the HTLV-I/II virus was studied. A total of 75 donors who attended the blood banks of two health institutions in Maracaibo, Venezuela were randomly selected: 50 patients seropositive for HTLV-I/II (study group) and 25 seronegative individuals (control group). The participants in the study were all contacted personally, after which they provided a fecal sample for parasitological diagnosis. The fresh samples were examined using 0.85% physiological saline solution (PSS), Lugol’s solution for temporary staining and the formalin-ether concentration technique (Ritchie). In addition, samples were cultured on nutrient agar (Arakaki method) to determine the presence of Strongyloides stercoralis larvae. Overall prevalences of 54% intestinal parasites in the study group and 44% in the control group were found. Monoparasitism prevailed among all the individuals studied. The species identified in the study and control groups were: Blastocystis spp. 47.3% and 15.4%, Entamoeba coli 21% and 15.4%, Endolimax nana 13.0% and 53.8%, Entamoeba complex 10.5% and 15.4%, Giardia intestinalis 5.2% and 0%, and Entamoeba hartmanni 2.6% and 0 %, respectively. Strongyloides stercoralis and other intestinal helminths were not detected in the individuals studied. Blastocystis spp. was significantly more common in seropositive patients than in the control group, which could be associated with a greater persistence of this chromista in patients co-infected with HTLV-I / II.It can be concluded that the positive serological status of HTLV-I / II infected individuals does not seem to influence either the presence or acquisition of intestinal parasites.

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