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Tumour necrosis factor, interleukin-6 and interleukin-10 are possibly involved in Plasmodium vivax-associated thrombocytopaenia in southern Pakistani population.

Authors: Raza, A  Khan, MS  Ghanchi, NK  Raheem, A  Beg, MA 
Citation: Raza A, etal., Malar J. 2014 Aug 16;13:323. doi: 10.1186/1475-2875-13-323.
Pubmed: (View Article at PubMed) PMID:25128199
DOI: Full-text: DOI:10.1186/1475-2875-13-323

BACKGROUND: In Pakistan, Plasmodium vivax is endemic causing approximately 70% of the malaria cases. A number of haematological changes, especially thrombocytopaenia have been reported for P. vivax. Several host factors including cell-mediated immune cells, such as IL-1, IL-6 and IL-10 have been documented for P. vivax-induced thrombocytopaenia. However, study on correlation of cytokines and thrombocytopaenia in P. vivax, particularly in patients with severe signs and symptoms has not been reported from Pakistan. METHODS: A case control study to correlate TNF, IL-6 and IL-10 in healthy controls and thrombocytopaenic P. vivax-infected patients (both uncomplicated and complicated cases) from southern Pakistan was carried out during January 2009 to December 2011. One Hundred and eighty two patients presenting with microscopy-confirmed asexual P. vivax mono-infection and 100 healthy controls were enrolled in the study at Aga Khan University Hospital, Karachi. Enzyme-linked immunosorbent assay (ELISA) was performed for determination of TNF, IL-6 and IL-10 levels. RESULTS: Out of 182 cases, mild thrombocytopaenia (platelet count 100,000-150,000 mm3) was observed in ten (5.5%), moderate (50,000-100,000 mm3) in 93 (51.1%), and profound thrombocytopaenia (<50,000 mm3) was detected in 79 (43.4%) patients. IL-6 and IL-10 levels were found approximately three-fold higher in the mild cases compared to healthy controls. Two-fold increase in TNF and IL-10 (p < 0.0001) was observed in profound thrombocytopaenic when compared with moderate cases, while IL-6 was not found to be significantly elevated. CONCLUSION: Cytokines may have a possible role in P. vivax-induced thrombocytopaenia in Pakistani population. Findings from this study give first insight from Pakistan on the role of cytokines in P.vivax-associated thrombocytopaenia. However, further studies are required to understand the relevance of cytokines in manifestations of thrombocytopaenia in P. vivax malaria.

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RGD Object Information
RGD ID: 11041893
Created: 2016-04-01
Species: All species
Last Modified: 2016-04-01
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.