Volume 124, Issue 1 pp. 62-68

Gender-dependent specific immune response during chronic human Schistosomiasis haematobia

F. Remoué

F. Remoué

INSERM Unité 167, Institut Pasteur de Lille, Lille, France,

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D. To Van

D. To Van

Programme ESPOIR,
Région Médicale de St-Louis, Saint-Louis, Sénégal,

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A.-M. Schacht

A.-M. Schacht

INSERM Unité 167, Institut Pasteur de Lille, Lille, France,

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M. Picquet

M. Picquet

Laboratory of Parasitology, University of Gent, Merelbeke,
Belgium and

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O. Garraud

O. Garraud

Unité d' Immunologie, Institut Pasteur de Dakar, Dakar, Sénégal

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J. Vercruysse

J. Vercruysse

Laboratory of Parasitology, University of Gent, Merelbeke,
Belgium and

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A. Ly

A. Ly

Programme ESPOIR,
Région Médicale de St-Louis, Saint-Louis, Sénégal,

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A. Capron

A. Capron

INSERM Unité 167, Institut Pasteur de Lille, Lille, France,

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G. Riveau

G. Riveau

INSERM Unité 167, Institut Pasteur de Lille, Lille, France,

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First published: 12 January 2002
Citations: 50
Franck Remoué, INSERM U167, Institut Pasteur de Lille 1, rue du Prof. Calmette – BP245–59019 – Lille, Cedex – France  E-mail: [email protected]

Abstract

The cellular and humoral acquired immune responses to Schistosoma haematobium 28 kD gluthathione S-Transferase (Sh28GST) antigen were evaluated in a Senegalese population chronically infected with S. haematobium parasite. We show a gender-dependent immune response in adult individuals presenting similar intensities of infection. Indeed, the specific IgA response and production of TGF-β and IL-10 were found significantly higher in females compared to males. In addition, we showed that this profile was combined with a weak production of Th1-related cytokines (TNFα and IFNγ) and was associated with an absence of proliferation to the antigen. A significantly higher Nuclear Matrix Protein 41/7 secretion, an apoptosis marker, was specifically observed in mononuclear blood cell cultures of females suggesting that a specific cell death process was engaged in a gender-dependent manner. This specific profile could be associated with the so-called T helper type-3 (Th3) immune response specifically promoting the production of IgA and would be developed upon the down-regulation of the specific Type-1 response by a probable cell death mechanism. This gender-dependent immune regulation, which may be under the influence of nonimmunological factors like sexual hormones, may be related to the chronicity of the infection.

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