Association of IL-10 gene polymorphisms and susceptibility to Juvenile Idiopathic Arthritis in Egyptian children and adolescents: a case-control study.

Autor:	Fathy MM; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt. fzeidan22@yahoo.com., Elsaadany HF; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Ali YF; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Farghaly MA; Department of Pediatrics, Faculty of Medicine, Aswan University, Aswan, Egypt., Hamed ME; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Ibrahim HE; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Noah MA; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Allah MA; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Elashkar SS; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Abdelsalam NI; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Abdelrahman HM; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Ahmed AR; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Anany HG; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Ismail SM; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Ibrahim BR; Department of Pediatrics, Faculty of Medicine, Zagazig University, 13 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt., Al Azizi NM; Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt., Gawish HH; Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt., Al-Akad GM; Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt., Nabil RM; Department of Clinical Pathology, Faculty of Medicine, Zagazig University, Zagazig, Egypt., Fahmy DS; Department of Rheumatology, Faculty of Medicine, Zagazig University, Zagazig, Egypt., Alsayed SF; Department of Internal Medicine, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
Jazyk:	angličtina
Zdroj:	Italian journal of pediatrics [Ital J Pediatr] 2017 Jan 17; Vol. 43 (1), pp. 9. Date of Electronic Publication: 2017 Jan 17.
DOI:	10.1186/s13052-017-0328-1
Abstrakt:	Background: Juvenile Idiopathic Arthritis (JIA) is the most common chronic arthritis in children worldwide. Among anti-inflammatory cytokines, interleukin-10 (IL-10) is a key immunosuppressive cytokine involved in the pathogenesis of JIA. To date, only a few studies concerned the association of interleukin-10 gene polymorphisms with JIA. In this study, we aimed to investigate 3 cytokine single-nucleotide polymorphisms situated at positions -1082(G/A), -819(C/T), and -592(C/A) in the promoter region of the IL-10 gene to determine whether this polymorphism could be a marker of susceptibility to JIA in Egyptian children and adolescents. We also measured the serum level of IL-10 to assess its relation to such polymorphism. Methods: This was a case-control study included 100 patients diagnosed with JIA, and matched with age, gender, ethnicity 100 healthy control subjects. Interleukin-10 -1082(G/A), -819(C/T), and -592(C/A) polymorphisms were genotyped by amplification refractory mutation system- polymerase chain reaction (ARMS)-PCR methodology, while the serum IL10 levels were measured by ELISA method. Results: Compared to the controls subjects, the frequency of IL-10- AA genotype and A allele at the -1082 position were overrepresented in patients with JIA (OR = 2.7; 95% CI: 1.1-6.4 for the AA genotype; P <0.05 and OR: 1.5; 95% CI: 1.03-2.3 for the A allele; P <0.05 respectively). On the other hand, no significant differences were found between the 2 groups in the genotype or allele frequencies for the -819 and -592 positions. Of note, we found a significant positive association between the IL-10 (-1082) AA genotype and susceptibility to polyarticular JIA (OR: 4.3; 95% CI: 1.5-12.7; P <0.01). We observed that patients with the IL-10 (-1082) AA genotype had significantly lower serum IL-10 levels (2.3 ± 0.9 pg/ml) compared to those with AG genotype (7.6 ± 1.5 pg/ml) and GG genotype (9.5 ± 1.2 pg/ml); P < 0.01, respectively. Conclusion: We demonstrate for the first time, to the best of our knowledge, that the presence of an A allele or AA gene variant at the -1082 position of the promoter region of the interleukin-10 gene may constitute risk factors for developing JIA in Egyptian children and adolescents. Moreover, we observed a significant positive association between the IL10 -1082 AA gene variant and susceptibility to polyarticular JIA.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu Plný text ve formátu PDF