Helminth infections induce immunomodulation : consequences and mechanisms

Leiden Repository

Helminth infections induce immunomodulation : consequences and mechanisms

Type: Doctoral Thesis
Title: Helminth infections induce immunomodulation : consequences and mechanisms
Author: Riet, Petronella Helena van
Publisher: Center for Infectious Diseases, Department of Parasitology, Leiden University Medical Center (LUMC), Leiden University
Issue Date: 2008-09-30
Keywords: Antibody
DC (dendritic cell)
Influenza
Lipid
Tetanus
Th1 (T helper 1)
Th2 (T helper 2)
TLR (Toll-like receptor)
Vaccination
Abstract: Worldwide, more than a billion people are infected with helminths. These worm infections are chronic in nature and can lead to considerable morbidity. Immunologically these infections are interesting; chronic helminth infections are characterized by skewing towards a T helper 2 type response as well as regulatory responses. The latter is thought to prevent strong immune responses against parasitic worms, allowing their long-term survival and restricting pathology. This regulatory network is thought to also temper responses to non-helminth antigens, like allergens or self antigens, possibly leading to lower prevalence of allergies and autoimmune diseases in subjects that are chronically infected with helminths. Thus, helminths may bear molecules that have potential therapeutic action against allergies and possibly other inflammatory diseases. However, on the other side of the coin, this would predict that helminth infected subjects might not respond strongly to third party antigens like vaccines. Helminth derived molecules have been identified that induce T helper 2 and regulatory responses via modulation of dendritic cells and some appear to do so via TLR signaling. New insights into these pathways could be useful to antagonize suppression and hence boost vaccine efficacy or to optimize suppression induced by helminth derived molecules and control inflammatory diseases.
Description: Promotores: M. Yazdanbakhsh, A.G.M. Tielens, Co-promotor: F.C. Hartgers
With summary in Dutch
Faculty: LUMC
Citation: Riet, P.H.van, 2008, Doctoral thesis, Leiden University
Handle: http://hdl.handle.net/1887/13120
 

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application/pdf Chapter 1 General introduction 146.5Kb View/Open Full text at publisher site
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application/pdf Summary 33.60Kb View/Open
application/pdf Summary in Dutch 39.47Kb View/Open
application/pdf Acknowledgement ... vitae_List of publications 56.23Kb View/Open
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