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The activation and expression of NF-\u03baB p65 in peripheral blood mononuclear cells (PBMCs) of malaria patients were investigated and correlated with the levels of IL-10 and TNF to study the nature of NF-\u03baB p65 and its linkage to inflammatory cytokines.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The sample group comprised 33 patients admitted with malaria caused by<jats:italic>Plasmodium vivax<\/jats:italic>(n\u2009=\u200911), uncomplicated<jats:italic>Plasmodium falciparum<\/jats:italic>(n\u2009=\u200911), and complicated<jats:italic>Plasmodium falciparum<\/jats:italic>(n\u2009=\u200911). Peripheral blood was collected at admission and on day 7 for PBMC isolation. Healthy subjects were used as a control group. The expressions of NF-\u03baB p65 in the PBMCs from malaria patients and the plasma levels of IL-10 and TNF were measured by using enzyme-linked immunosorbent assay (ELISA). The immunofluorescence technique was used to determine NF-\u03baB nuclear translocation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>At admission, patients with<jats:italic>P. vivax<\/jats:italic>and uncomplicated<jats:italic>P. falciparum<\/jats:italic>had significantly elevated phospho-NF-\u03baB p65 levels in the PBMCs compared with those of healthy controls. However, patients with complicated<jats:italic>P. falciparum<\/jats:italic>malaria had decreased levels of phospho-NF-\u03baB p65. On day 7 post-treatment, significantly increased phospho-NF-\u03baB p65 was found in the PBMCs of patients with complicated<jats:italic>P. falciparum<\/jats:italic>, compared with healthy controls. The plasma level of IL-10 was elevated in day 0 in patients with complicated<jats:italic>P. falciparum<\/jats:italic>malaria and was found to be negatively correlated with phospho-NF-\u03baB p65 level (<jats:italic>r<\/jats:italic><jats:sub><jats:italic>s<\/jats:italic><\/jats:sub>\u2009=\u2009\u22120.630,<jats:italic>p<\/jats:italic>\u2009=\u20090.038). However, there was no correlation between phospho-NF-\u03baB p65 expression and TNF level in patients with complicated<jats:italic>P. falciparum<\/jats:italic>malaria.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This is the first report demonstrating alterations in NF-\u03baB p65 activity in the PBMCs of malaria patients. The altered lower features of NF-\u03baB p65 in the PBMCs of patients with complicated<jats:italic>P. falciparum<\/jats:italic>at admission could be due to a suppressive effect of high IL-10 associated with complicated<jats:italic>P. falciparum<\/jats:italic>malaria.<\/jats:p><\/jats:sec>","DOI":"10.1186\/1475-2875-11-191","type":"journal-article","created":{"date-parts":[[2012,12,5]],"date-time":"2012-12-05T17:23:15Z","timestamp":1354728195000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Activation of nuclear factor kappa B in peripheral blood mononuclear cells from malaria patients"],"prefix":"10.1186","volume":"11","author":[{"given":"Chuchard","family":"Punsawad","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Srivicha","family":"Krudsood","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yaowapa","family":"Maneerat","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Urai","family":"Chaisri","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Noppadon","family":"Tangpukdee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emsri","family":"Pongponratn","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kwannan","family":"Nantavisai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rachanee","family":"Udomsangpetch","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Parnpen","family":"Viriyavejakul","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2012,6,10]]},"reference":[{"key":"2145_CR1","first-page":"519","volume":"90","author":"T Tripathi","year":"2006","unstructured":"Tripathi T, Aggarwal A: NF-kappa B transcription factor: a key player in the generation of immune response. 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