seropositivity for ascariosis and toxocariosis and cytokine expression among the indigenous people in the venezuelan delta region

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ID: 136096
2015
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Abstract
The present study aimed at measuring seropositivities for infection by Ascaris suum and Toxocara canis using the excretory/secretory (E/S) antigens from Ascaris suum (AES) and Toxocara canis (TES) within an indigenous population. In addition, quantification of cytokine expressions in peripheral blood cells was determined. A total of 50 Warao indigenous were included; of which 43 were adults and seven children. In adults, 44.1% were seropositive for both parasites; whereas children had only seropositivity to one or the other helminth. For ascariosis, the percentage of AES seropositivity in adults and children was high; 23.3% and 57.1%, respectively. While that for toxocariosis, the percentage of TES seropositivity in adults and children was low; 9.3% and 14.3%, respectively. The percentage of seronegativity was comparable for AES and TES antigens in adults (27.9%) and children (28.6%). When positive sera were analyzed by Western blotting technique using AES antigens; three bands of 97.2, 193.6 and 200.2 kDas were mostly recognized. When the TES antigens were used, nine major bands were mostly identified; 47.4, 52.2, 84.9, 98.2, 119.1, 131.3, 175.6, 184.4 and 193.6 kDas. Stool examinations showed that Blastocystis hominis, Hymenolepis nana and Entamoeba coli were the most commonly observed intestinal parasites. Quantification of cytokines IFN-γ, IL-2, IL-6, TGF-β, TNF-α, IL-10 and IL-4 expressions showed that there was only a significant increased expression of IL-4 in indigenous with TES seropositivity (p < 0.002). Ascaris and Toxocara seropositivity was prevalent among Warao indigenous.
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Authors Zaida Araujo, Sietze Brandes, Elena Pinelli, María A. Bochichio, Andrea Palacios, Albina Wide, Bruno Rivas-Santiago, Juan Carlos Jiménez
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Journal 2017 12th international conference for internet technology and secured transactions, icitst 2017
Year 2015
DOI
10.1590/S0036-46652015000100007
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652015000100047&lng=en&tlng=en
Keywords
zoonoses toxocara canis tropical medicine waraoarctic medicine

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