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Journal of Venomous Animals and Toxins including Tropical Diseases

On-line version ISSN 1678-9199

Abstract

ABDALLAH, N; ABDEL AZIZ, HK; HAMED, NA  and  GAMAL, M. Correlation between serum levels of interleukins 10 and 12 and thrombocytopenia in hepatitis C cirrhotic (class A) patients. J. Venom. Anim. Toxins incl. Trop. Dis [online]. 2010, vol.16, n.3, pp.456-461. ISSN 1678-9199.  http://dx.doi.org/10.1590/S1678-91992010000300012.

Hepatitis C virus (HCV) patients commonly have low platelet counts; however, the exact role of HCV infection in thrombocytopenia is unknown. This work aimed to study the serum levels of interleukins (IL) 10 and 12 in patients with mild and moderate thrombocytopenia associated with chronic hepatitis C infection. Our study included 15 patients with chronic HCV infection and newly diagnosed isolated autoimmune thrombocytopenia (Group I) and 15 patients with chronic HCV infection and normal platelet count as controls (Group II). All patients were examined for personal history and clinical aspects, complete blood count, bone marrow aspiration, liver function tests, HCV antibody assay by ELISA and polymerase chain reaction (PCR), abdominal ultrasound, Helicobacter pylori stool antigen test, evaluation of serum levels of IL-10, IL-12 and platelet specific antibodies. Our results revealed that eight patients from Group l had mild thrombocytopenia and seven patients had moderate thrombocytopenia. Serum IL-10 level was significantly elevated (t = 9.301, p < 0.001) while serum IL-12 showed a significant decrease (t = 6.502, p < 0.001) in Group I compared to the control group. No correlation was detected between platelet counts and the serum levels of either IL-10 [r = 0.454, p = 0.089 (Group I), r = 0.038, p = 0.89 (Group II)] or IL-12 [r = 0.497, p = 0.06 (Group I), r = 0.499, p = 0.058 (Group II)]. However, in Group I, a significant correlation was present only between moderate thrombocytopenia and serum levels of either IL-10 (r = 0.794, p = 0.033) or IL-12 (r = 0.967, p = 0.001), while no correlation was detected between these interleukin parameters and mild thrombocytopenia (r = 0.311 and p = 0.453 for IL-10 and r = -0.08 and p = 0.851 for IL-12). Based on our data, we may conclude that interleukins 10 and 12 are involved in low platelet levels.

Keywords : interleukin-10; interleukin-12; thrombocytopenia; hepatitis C activity.

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