Comparative study between chronic immune thrombocytopenia patients and healthy population on Epstein-Barr virus infection status by polymerase chain reaction.
EXPERT REVIEW OF HEMATOLOGY(2020)
Abstract
Background Immune thrombocytopenia (ITP) has been known to be associated with assorted virus infections. This study aims to investigate the Epstein-Barr virus infection status in chronic ITP patients by real-time quantitative polymerase chain reaction. Methods 42 chronic ITP patients and 42 healthy donors were retrospectively included via propensity score matching with gender and age. EBV-DNA levels in whole blood of patients and donors were assessed by RT-qPCR, and correlations between virus load and platelet count were analyzed. Results The positive rate of EBV-DNA in lymphocytes of chronic ITP patients was significantly higher than that in donors (52.4% vs 31.0%, p = 0.046). Platelet count [18(8-45)x10(9)/L] of patients with high virus load in lymphocytes was significantly lower than that [51(30-87)x10(9)/L] of patients with low virus load (p = 0.0001), whereas no difference was observed in platelet count between EBV-DNA-positive and negative subgroups of donors (p = 0.984). And a significant inverse correlation was observed between EBV-DNA levels in lymphocytes and platelet count (r = -0.4958, p = 0.019) in patients, which was independent from the presence of platelet-associated IgG. Conclusions EBV infection has a potential role in the development of chronic ITP. Identification and control of this underlying infection should be emphasized in the treatment of chronic ITP.
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Key words
Chronic immune thrombocytopenia,Epstein-Barr virus infection,healthy donors,platelet,real-time quantitative polymerase chain reaction
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