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Multiple sclerosis and anti-Plasmodium falciparum innate immune response

Sotgiu, Stefano and Sannella, Anna Rosa and Conti, Bruno and Arru, Giannina and Fois, Maria Laura and Sanna, Alessandra and Saverini, Carlo and Morale, Maria Concetta and Marchetti, Bianca Maria and Rosati, Giulio and Musumeci, Salvatore (2007) Multiple sclerosis and anti-Plasmodium falciparum innate immune response. Journal of Neuroimmunology, Vol. 185 (1-2), p. 201-207. ISSN 0165-5728. Article.

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DOI: 10.1016/j.jneuroim.2007.01.020

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Several epidemiological investigations conducted in Sardinia, insular Italy, indicate that the strong selective pressure of malaria along the centuries may have concurred to the elevated genetic MS-risk in this region. To test such hypothesis in an experimental setting, we have compared the immune response to P. falciparum (the causative agent of malaria) in Sardinian MS patients relative to their ethnic healthy controls and control MS patients of different ethnicity. To this purpose, the P. falciparum-driven peripheral mononuclear cell proliferation, the production of pro-inflammatory cytokines of the innate immunity such as TNF-α, IL-6 and IL-12 and the ability to inhibit the parasite growth have been tested in relation to HLA-DR alleles and TNF promoter polymorphisms known of being associated to MS. We found that P. falciparum-induced proliferation, cytokine production and parasite killing are significantly augmented in Sardinian MS patients as compared to controls (p < 0.01). Additionally, a correlation is found with genes associated to Sardinian MS, namely the TNF− 376A promoter polymorphism and the class II HLA-DRB1 *0405 allele. In conclusion, we have found evidences that some genetic traits formerly selected to confer a protective responses to P. falciparum now partially contribute to the elevated MS susceptibility amongst Sardinians.

Item Type:Article
ID Code:4970
Uncontrolled Keywords:Multiple sclerosis, malaria, Plasmodium falciparum, TNF, HLA, Sardinia
Subjects:Area 05 - Scienze biologiche > BIO/14 Farmacologia
Area 06 - Scienze mediche > MED/38 Pediatria generale e specialistica
Area 06 - Scienze mediche > MED/26 Neurologia
Divisions:001 Università di Sassari > 01 Dipartimenti > Neuroscienze, scienze materno infantili
Deposited On:26 Nov 2010 09:08

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