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  • Title: IL-1, IL-1R and TNFalpha gene polymorphisms in Iranian patients with multiple sclerosis.
    Author: Sarial S, Shokrgozar MA, Amirzargar A, Shokri F, Radfar J, Zohrevand P, Arjang Z, Sahraian MA, Lotfi J.
    Journal: Iran J Allergy Asthma Immunol; 2008 Mar; 7(1):37-40. PubMed ID: 18322311.
    Abstract:
    Different research groups have extensively studied the associations of cytokine gene polymorphisms in different diseases. The role of cytokines gene polymorphisms in multiple sclerosis (MS), as a chronic Immune-mediated neurodegenerative disease, has been previously reported in the various populations. For determining pro-inflammatory cytokine gene polymorphisms, 100 relapsing remitting multiple sclerosis (RRMS) Iranian patients and 140 normal individuals as control enrolled in this study. DNA of each sample was extracted by a modified salting out method. Cytokine single gene nucleotide polymorphisms including IL-1alpha -889, IL-1beta (-511 and +3962), IL-1R pst1 1970, IL-1RA mspal 11100, and TNF-alpha (-308 and -238) were determined by using the PCR-SSP method. The results of our data indicate the decrease in frequency of IL-1alpha TC-889 genotype (p=0.002), IL-1beta TC +3962 genotype (p=0.004), IL-1R T pst1 1970 allele (p= 0.0001), IL-1 RA TC Mspa1 11100 genotype (p=0.009), TNF-alpha A-308 allele (p=0.0002) and AG genotype (p=0.00001) in the patients group versus normal subjects. On the other hand the frequency of IL-1alpha TT -889 genotype (p=0.028), IL-1R C pst1 1970 allele (p=0.0001) and CC genotype (p=0.00006), TNFalpha G -308 allele (p=0.0002) and GG genotype (p=0.000001) decreased significantly in the patients versus normal subjects.These results suggest that polymorphic variations of these pro-inflammatory cytokines may play an important role in susceptibility of Iranian multiple sclerosis patients.
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