Changes in the levels of cytokines, chemokines and malaria specific antibodies in response to Plasmodium falciparum infection in children living in sympatry in Mali

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Boström, Stephanie,1985-Stockholms universitet,Wenner-Grens institut (author)

Changes in the levels of cytokines, chemokines and malaria specific antibodies in response to Plasmodium falciparum infection in children living in sympatry in Mali

Article/chapterEnglish2012

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2012-04-05
Springer Science and Business Media LLC,2012
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LIBRIS-ID:oai:DiVA.org:su-80750
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-80750URI
https://doi.org/10.1186/1475-2875-11-109DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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AuthorCount:9;
Background: The Fulani are known to be less susceptible to Plasmodium falciparum malaria as reflected by lower parasitaemia and fewer clinical symptoms than other sympatric ethnic groups. So far most studies in these groups have been performed on adults, which is why little is known about these responses in children. This study was designed to provide more information on this gap. Methods: Circulating inflammatory factors and antibody levels in children from the Fulani and Dogon ethnic groups were measured. The inflammatory cytokines; interleukin (IL)-1beta, IL-6, IL-8, IL-10, IL-12p70, tumor necrosis factor (TNF) and the chemokines; regulated on activation normal T cell expressed and secreted (RANTES), monokine-induced by IFN-gamma (MIG), monocyte chemotactic protein (MCP)-1 and IFN-gamma-inducible protein (IP)-10 were measured by cytometric bead arrays. The levels of interferon (IFN)-alpha, IFN-gamma and malaria-specific antibodies; immunoglobulin (Ig) G, IgM and IgG subclasses (IgG1-IgG4) were measured by ELISA. Results: The results revealed that the Fulani children had higher levels of all tested cytokines compared to the Dogon, in particular IFN-gamma, a cytokine known to be involved in parasite clearance. Out of all the tested chemokines, only MCP-1 was increased in the Fulani compared to the Dogon. When dividing the children into infected and uninfected individuals, infected Dogon had significantly lower levels of RANTES compared to their uninfected peers, and significantly higher levels of MIG and IP-10 as well as MCP-1, although the latter did not reach statistical significance. In contrast, such patterns were not seen in the infected Fulani children and their chemokine levels remained unchanged upon infection compared to uninfected counterparts. Furthermore, the Fulani also had higher titres of malaria-specific IgG and IgM as well as IgG1-3 subclasses compared to the Dogon. Conclusions: Taken together, this study demonstrates, in accordance with previous work, that Fulani children mount a stronger inflammatory and antibody response against P. falciparum parasites compared to the Dogon and that these differences are evident already at an early age. The inflammatory responses in the Fulani were not influenced by an active infection which could explain why less clinical symptoms are seen in this group.

Subject headings and genre

NATURVETENSKAP Biologi Immunologi hsv//swe
NATURAL SCIENCES Biological Sciences Immunology hsv//eng
cytokines
chemokines
antibodies
Plasmodium falciparum
Fulani
Dogon
immunologi
Immunology

Added entries (persons, corporate bodies, meetings, titles ...)

Giusti, PabloStockholms universitet,Wenner-Grens institut (author)
Arama, CharlesStockholms universitet,Wenner-Grens institut,University of Bamako, Mali(Swepub:su)caram (author)
Persson, Jan-OlovStockholms universitet,Matematiska institutionen(Swepub:su)japer (author)
Dara, Victor (author)
Traore, Boubacar (author)
Dolo, Amagana (author)
Doumbo, Ogobara (author)
Troye-Blomberg, MaritaStockholms universitet,Wenner-Grens institut(Swepub:su)marita (author)
Stockholms universitetWenner-Grens institut (creator_code:org_t)

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In:Malaria Journal: Springer Science and Business Media LLC11, s. 109-1475-2875

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Immunology

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