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Quinolinic Alkaloids from Galipea longiflora Krause Suppress Production of Proinflammatory Cytokines in vitro and Control Inflammation in vivo upon Leishmania Infection in Mice
Stockholms universitet, Naturvetenskapliga fakulteten, Wenner-Grens institut.
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2013 (Engelska)Ingår i: Scandinavian Journal of Immunology, ISSN 0300-9475, E-ISSN 1365-3083, Vol. 77, nr 1, s. 30-38Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

An antileishmanial activity of quinolinic alkaloids from Galipea longiflora Krause, known as Evanta, has been demonstrated. We have previously shown that, apart from its leishmanicidal effect, in vitro pretreatment of spleen cells with an alkaloid extract of Evanta (AEE) interfered with the proliferation and interferon-γ production in lymphocytes polyclonally activated either with concanavalin A or anti-CD3. In the present study, we investigated if AEE could interfere with antigen-specific lymphocyte activation. We found that in vitro and in vivo treatment reduced recall lymphocyte responses, as measured by IFN-γ production (55% and 63% reduction compared to untreated cells, respectively). Apart from IFN-γ, the production of IL-12 and TNF was also suppressed. No effects were observed for meglumine antimoniate (SbV), the conventional drug used to treat leishmaniasis. When mice infected with Leishmania braziliensis promastigotes in the hind footpad were treated with AEE, the dynamics of the infection changed and the footpath thickness was efficiently controlled. The parasite load was also reduced but to a lesser extent than upon treatment with SbV. Combined treatment efficiently controlled both the thickness and parasite load as smaller lesions during the entire course of the infection were seen in the mice treated with AEE plus SbV compared with AEE or SbV alone. We discuss the benefits of combined administration of AEE plus SbV.

Ort, förlag, år, upplaga, sidor
2013. Vol. 77, nr 1, s. 30-38
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Immunologi
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URN: urn:nbn:se:su:diva-86294DOI: 10.1111/sji.12010ISI: 000312948300004PubMedID: 23126625OAI: oai:DiVA.org:su-86294DiVA, id: diva2:586589
Tillgänglig från: 2013-01-11 Skapad: 2013-01-11 Senast uppdaterad: 2017-12-06Bibliografiskt granskad

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Troye-Blomberg, MaritaFernández, Carmen
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Wenner-Grens institut
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Scandinavian Journal of Immunology
Immunologi

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