Abstract
Background: Cytokines as important mediators have a critical role in appropriate immune responses, the irregular production of which can lead to Multiple Sclerosis (MS). Proinflammatory cytokine interleukin-1 (IL-1) triggers inflammatory responses. Function and production of the cytokine are influenced by IL-1 coding gene polymorphism and those antagonists gene polymorphism.
Objective: The aim of the present study was to evaluate the possible correlation between MS and IL-1 related alleles in Azeri population of Iran.
Methods: Variable number tandem repeats (VNTR) genotypes of 150 MS patients and 220 healthy non-relative controls were determined.
Results: In the healthy controls, genotype TT at IL-1A (-889) location was significantly higher than the MS patients (p=0.0001). However, a significant difference was not found between the two groups in genotypic/allelic frequency at IL- 1B+ 3953 location. Evaluation of the IL-1RA gene revealed that genotype 1/2, and genotype 1/3 were significantly higher in the healthy controls and MS patients, respectively. Our findings indicated that the consumption of fast-food in MS patients was significantly higher than controls (p= <0.05). Also, a considerable number of MS patients had inappropriate dieting behaviors such as not eating breakfast (p= 0.0001), and irregular eating habits (p= 0.0001).
Conclusion: Polymorphisms of the IL-1B genes and common alleles of IL-1RA were not considered as risk factors for MS disease. However, genotype TT at IL-1A (-889) location and the rare allele of IL-1RA3 can be a potential risk factor for the disease. Furthermore, inappropriate dieting behaviors and consumption of fast-food can increase the risk of MS.
Keywords: IL-1A, IL-1B, IL-1RA, polymorphism, multiple sclerosis, Iran.
Graphical Abstract
[PMID: 28761631]
[PMID: 28717432]
[http://dx.doi.org/10.1212/WNL.0000000000000768] [PMID: 25200713]
[http://dx.doi.org/10.1016/j.msard.2018.01.008] [PMID: 29353734]
[http://dx.doi.org/10.1007/s10072-015-2401-0] [PMID: 26506927]
[http://dx.doi.org/10.1007/s11481-015-9614-0] [PMID: 25946987]
[http://dx.doi.org/10.1016/j.jneuroim.2011.04.014] [PMID: 21621860]
[http://dx.doi.org/10.1080/0962933031000097691] [PMID: 12775358]
[http://dx.doi.org/10.1016/j.bbi.2016.07.146] [PMID: 27432634]
[http://dx.doi.org/10.1016/j.cyto.2015.06.017] [PMID: 26185894]
[http://dx.doi.org/10.3109/00207454.2013.795563] [PMID: 23594042]
[http://dx.doi.org/10.1016/j.humimm.2009.07.024] [PMID: 19664671]
[http://dx.doi.org/10.1007/BF00217368] [PMID: 8500797]
[http://dx.doi.org/10.1016/j.jneuroim.2015.09.009] [PMID: 26531703]
[PMID: 27424131]
[http://dx.doi.org/10.1111/j.1600-051X.1997.tb01187.x] [PMID: 9049801]
[http://dx.doi.org/10.1111/j.1365-2249.1995.tb03793.x] [PMID: 7586694]
[http://dx.doi.org/10.1016/S0165-5728(02)00056-5] [PMID: 12020968]
[PMID: 18322311]
[http://dx.doi.org/10.1136/jnnp.69.4.564] [PMID: 11183041]
[http://dx.doi.org/10.1191/1352458503ms974oa] [PMID: 14664464]
[http://dx.doi.org/10.1007/s00251-002-0445-9] [PMID: 12037600]
[http://dx.doi.org/10.1016/j.jns.2014.05.013] [PMID: 24867167]
[http://dx.doi.org/10.1016/j.jneuroim.2008.11.004] [PMID: 19162335]
[http://dx.doi.org/10.1111/j.1600-051X.1998.tb02370.x] [PMID: 9797049]
[http://dx.doi.org/10.1016/S0165-5728(00)00202-2] [PMID: 10814801]
[http://dx.doi.org/10.1007/s10072-009-0155-2] [PMID: 19876593]
[http://dx.doi.org/10.1002/(SICI)1521-4141(199808)28:08<2598:AID-IMMU2598>3.0.CO;2-K] [PMID: 9710237]
[http://dx.doi.org/10.1007/s11910-014-0492-2] [PMID: 25204849]
[http://dx.doi.org/10.1038/nature12820] [PMID: 24336217]
[http://dx.doi.org/10.1007/s11910-018-0827-5] [PMID: 29525910]
[http://dx.doi.org/10.2119/molmed.2011.00311] [PMID: 22113499]