التفاصيل البيبلوغرافية
| العنوان: |
Combined tumor necrosis factor-α (−308 G/A) and tumor necrosis factor-β (+ 252 A/G) nucleotide polymorphisms and chronicity in Egyptian children with immune thrombocytopenia. |
| المؤلفون: |
El-Ghamrawy, Mona, El-Gharbawi, Nesrine, Shahin, Gehan, Abdelhady, Alaa, Sayed, Rasha, Diaa, Nehal, Bishai, Irene |
| المصدر: |
International Journal of Hematology; Jun2023, Vol. 117 Issue 6, p856-862, 7p |
| مستخلص: |
Background: Primary immune thrombocytopenia (ITP) is a common autoimmune disorder. Secretion of TNF-α, TNF-β and IFN-γ plays a major role in the pathogenesis of ITP. Objective: This cross-sectional study aimed to detect TNF-α (−308 G/A) and TNF-β (+ 252 A/G) gene polymorphism in a cohort of Egyptian children with chronic ITP (cITP) to clarify their possible association with progression to chronic disease. Methods: The study included 80 Egyptian cITP patients and 100 unrelated age- and sex-matched controls. Genotyping was performed using polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP). Results: Patients with TNF-α homozygous (A/A) genotype had significantly higher mean age, longer disease duration and lower platelet counts (p values 0.005, 0.024 and 0.008, respectively). TNF-α wild (G/G) genotype was significantly more frequent among responders (p = 0.049). Complete response was more frequent among wild (A/A) TNF-β genotype patients (p = 0.011), and platelet count was significantly lower among homozygous (G/G) genotype (p = 0.018) patients. Combined polymorphisms were strongly associated with susceptibility to chronic ITP. Conclusion: Homozygosity in either gene might contribute to a worse course of disease, increased severity and poor response to therapy. Patients expressing combined polymorphisms are more prone to progression to chronic disease, severe thrombocytopenia and longer disease duration. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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