PMID- 27600402 OWN - NLM STAT- MEDLINE DCOM- 20170411 LR - 20170411 IS - 1607-8454 (Electronic) IS - 1024-5332 (Linking) VI - 22 IP - 2 DP - 2017 Mar TI - Impact of serum immunoglobulins level and IL-18 promoter gene polymorphism among Egyptian patients with idiopathic thrombocytopenic purpura. PG - 99-104 LID - 10.1080/10245332.2016.1221213 [doi] AB - OBJECTIVES: Based on the concept of immune dysregulation in immune thrombocytopenic purpura (ITP) and that Interleukin-18 (IL-18) is an inflammatory cytokine that plays an important role in autoimmune disease by inducing interferon-gamma secretion; this study aimed to assess a possible association between the IL-18 promoter polymorphisms (-607 C/A site) and genetic susceptibility to ITP and the impact of the immunoglobulins (Igs) concentrations level on disease severity and response to therapy. METHODS: A cross-section study was done on 105 patients' age range from 10 to 28 years, with newly diagnosed ITP at the Oncology Center Mansoura University over the past 2 years and 100 healthy subjects as a control group. For all patients and controls, the IL-18 promoter polymorphism (-607 C/A site) as well as serum Ig (IgG, IgM, IgA) concentration was determined. RESULTS: The IL-18 promoter polymorphism (-607 C/A site) was not significantly different between ITP patients and normal controls. The number of patients respond to standard line of therapy was significantly higher in those with low IgA levels as compared to those with high IgA levels (P = 0.02). On the other hand, the number of patients respond to standard therapy was significantly higher in those patients with high IgM levels as compared to those with low IgM levels (54.7 vs. 36.5%) (P < 0.05). The number of patients with bleeding manifestation was significantly higher among those with high IgA as compared to those with low IgA (43 of 79, 54.4%; vs. 36 of 79, 45.6%; P = 0.04). A change in IgG levels was not associated with response to treatment, bleeding tendency, or platelet counts. CONCLUSION: There is no association between IL-18 promoter polymorphisms (-607 C/A site) and genetic susceptibility to ITP. High IgA and low IgM levels are a bad index for treatment response to standard therapy. FAU - Aref, Salah AU - Aref S AD - a Hematology Unit, Clinical Pathology Department, Mansoura Oncology Center , Mansoura Faculty of Medicine , Egypt. FAU - El-Ghonemy, Mohamed Sabry AU - El-Ghonemy MS AD - a Hematology Unit, Clinical Pathology Department, Mansoura Oncology Center , Mansoura Faculty of Medicine , Egypt. FAU - El-Aziz, Sherin Abd AU - El-Aziz SA AD - a Hematology Unit, Clinical Pathology Department, Mansoura Oncology Center , Mansoura Faculty of Medicine , Egypt. FAU - Abouzeid, Tarek AU - Abouzeid T AD - b Clinical Hematology Unit, Mansoura Oncology Center , Mansoura Faculty of Medicine , Egypt. FAU - Talaab, Mona AU - Talaab M AD - b Clinical Hematology Unit, Mansoura Oncology Center , Mansoura Faculty of Medicine , Egypt. FAU - El-Sabbagh, Amr AU - El-Sabbagh A AD - c Medical Microbiology and Immunology , Mansoura Faculty of Medicine , Egypt. LA - eng PT - Journal Article DEP - 20160906 PL - England TA - Hematology JT - Hematology (Amsterdam, Netherlands) JID - 9708388 RN - 0 (Immunoglobulins) RN - 0 (Interleukin-18) SB - IM MH - Adolescent MH - Adult MH - Child MH - Cross-Sectional Studies MH - Egypt MH - Female MH - Genetic Predisposition to Disease MH - Humans MH - Immunoglobulins/*blood MH - Interleukin-18/*genetics MH - Male MH - Polymorphism, Genetic MH - Purpura, Thrombocytopenic, Idiopathic/*blood/*genetics MH - Young Adult OTO - NOTNLM OT - IL-18 OT - ITP OT - immunoglobulin EDAT- 2016/09/08 06:00 MHDA- 2017/04/12 06:00 CRDT- 2016/09/08 06:00 PHST- 2016/09/08 06:00 [pubmed] PHST- 2017/04/12 06:00 [medline] PHST- 2016/09/08 06:00 [entrez] AID - 10.1080/10245332.2016.1221213 [doi] PST - ppublish SO - Hematology. 2017 Mar;22(2):99-104. doi: 10.1080/10245332.2016.1221213. Epub 2016 Sep 6.