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HTLV-1 decreases Th2 type of immune response in patients with strongyloidiasis

Porto, Aurélia F., Neva, Franklin A., Bittencourt, Helito, Lisboa, Waldir, Thompson, Robert, Alcântara, Luís, Carvalho, Edgar M.·2001·Parasite Immunology
DOI 10.1046/j.1365-3024.2001.00407.x
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Abstract

Eosinophils, immunoglobilin (Ig)E and cytokines have important roles in defence mechanisms against helminths. In this study, the influence of HTLV‐1 infection, characterized by a Th1 type of immune response, was evaluated on the cytokine pattern and parasitic specific IgE response in patients with strongyloidiasis. Patients were divided into four groups: strongyloidiasis without HTLV‐1 infection, strongyloidiasis with HTLV‐1, HTLV‐1 without strongyloidiasis and controls without either helminth infection or HTLV‐1. The cytokine profile was determined in supernatants of mononuclear cells stimulated with Strongyloides stercoralis crude antigen and the parasite specific IgE was measured by ELISA. Patients coinfected with HTLV‐1 had higher levels of interfron (IFN)‐γ and interleukin (IL)‐10 (P < 0·05) and lower levels of IL‐5 and IgE (P < 0·05) than patients with strongyloidiasis without HTLV‐1. There was an inverse relationship between IFN‐γ and IL‐5 (P = 0·01; rs = − 0·37) and between IFN‐γ and parasite specific IgE (P = 0·01; rs = − 0·39), and a direct relationship between IFN‐γ and IL‐10 (P = 0·04; rs = 0·35). These data show that coinfection with HTLV‐1 decreases IL‐5 and IgE responses in patients with strongyloidiasis consistent with a relative switch from Th2 to Th1 response. Immunological responses such as these are important in the control of this helminthic infection.

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Metadata

Authors
Porto, A. F., Neva, F. A., Bittencourt, H., Lisboa, W., Thompson, R., Alcântara, L., & Carvalho, E. M.
Venue
Parasite Immunology
Publisher
Wiley
Published
2001-09
Volume
23
Issue
9
Pages
503-507
ISSN
  • 0141-9838
  • 1365-3024
DOI
10.1046/j.1365-3024.2001.00407.x
Cited by
120
References
1
Language
en
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor, 111 d)

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CoChat. (2026). Citation check: HTLV-1 decreases Th2 type of immune response in patients with strongyloidiasis. https://app.cochat.ai/papers/10.1046/j.1365-3024.2001.00407.x
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Porto, A. F., Neva, F. A., Bittencourt, H., Lisboa, W., Thompson, R., Alcântara, L., & Carvalho, E. M. (2001). HTLV-1 decreases Th2 type of immune response in patients with strongyloidiasis. Parasite Immunology. https://doi.org/10.1046/j.1365-3024.2001.00407.x