Association of serum levels and receptor genes BsmI, TaqI and FokI polymorphisms of vitamin D with the severity of multiple sclerosis. 2021

Ensieh Moosavi, and Alireza Rafiei, and Yaghoub Yazdani, and Mina Eslami, and Mohsen Saeedi
Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan, Iran; Department of Immunology, Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran.

OBJECTIVE Multiple sclerosis (MS) is a chronic inflammatory and neurodegenerative disease. Vitamin D has a major role in preventing inflammatory disorders. Therefore, any alteration in vitamin D receptor (VDR) might be a genetic risk factor for MS development. This study aimed to evaluate the effect of serum levels and VDR FokI, BsmI, and TaqI gene polymorphisms on the severity of MS. METHODS This case-control study recruited 160 MS patients (71.9% females, mean age of 34.3 ± 8.3 years) and 162 (66.7% females, mean age 35.4 ± 7.9 year) age, sex, and ethnicity matched healthy controls. FokI (rs2228570), BsmI (rs1544410), and TaqI (rs731236) polymorphisms were carried out using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Demographic, clinical parameters, and the levels of vitamin D were compared between groups. RESULTS We found that the frequency of FokI and TaqI polymorphisms significantly differed between the patients and the controls (p = 0.0127 and p = 0.0236, respectively). The MS patients had low levels of vitamin D compared to the controls (p = 0.011). In addition, TaqI T/C polymorphism significantly decreased the levels of vitamin D in the MS patients (p = 0.002). However, there was no significant association between FokI or BsmI SNPs and the levels of vitamin D in MS patients (p > 0.5). CONCLUSIONS Our results suggest that FokI and TaqI polymorphisms of VDR are associated with MS risk and TaqI polymorphism is associated with Vitamin D levels in MS patients. Meanwhile, no difference was observed between VDR gene polymorphisms and any types of MS.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009103 Multiple Sclerosis An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903) MS (Multiple Sclerosis),Multiple Sclerosis, Acute Fulminating,Sclerosis, Disseminated,Disseminated Sclerosis,Sclerosis, Multiple
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D014807 Vitamin D A vitamin that includes both CHOLECALCIFEROLS and ERGOCALCIFEROLS, which have the common effect of preventing or curing RICKETS in animals. It can also be viewed as a hormone since it can be formed in SKIN by action of ULTRAVIOLET RAYS upon the precursors, 7-dehydrocholesterol and ERGOSTEROL, and acts on VITAMIN D RECEPTORS to regulate CALCIUM in opposition to PARATHYROID HORMONE.
D016022 Case-Control Studies Comparisons that start with the identification of persons with the disease or outcome of interest and a control (comparison, referent) group without the disease or outcome of interest. The relationship of an attribute is examined by comparing both groups with regard to the frequency or levels of outcome over time. Case-Base Studies,Case-Comparison Studies,Case-Referent Studies,Matched Case-Control Studies,Nested Case-Control Studies,Case Control Studies,Case-Compeer Studies,Case-Referrent Studies,Case Base Studies,Case Comparison Studies,Case Control Study,Case Referent Studies,Case Referrent Studies,Case-Comparison Study,Case-Control Studies, Matched,Case-Control Studies, Nested,Case-Control Study,Case-Control Study, Matched,Case-Control Study, Nested,Case-Referent Study,Case-Referrent Study,Matched Case Control Studies,Matched Case-Control Study,Nested Case Control Studies,Nested Case-Control Study,Studies, Case Control,Studies, Case-Base,Studies, Case-Comparison,Studies, Case-Compeer,Studies, Case-Control,Studies, Case-Referent,Studies, Case-Referrent,Studies, Matched Case-Control,Studies, Nested Case-Control,Study, Case Control,Study, Case-Comparison,Study, Case-Control,Study, Case-Referent,Study, Case-Referrent,Study, Matched Case-Control,Study, Nested Case-Control
D018167 Receptors, Calcitriol Proteins, usually found in the cytoplasm, that specifically bind calcitriol, migrate to the nucleus, and regulate transcription of specific segments of DNA with the participation of D receptor interacting proteins (called DRIP). Vitamin D is converted in the liver and kidney to calcitriol and ultimately acts through these receptors. Calcitriol Receptors,Cholecalciferol Receptors,Receptors, Vitamin D,Vitamin D 3 Receptors,Vitamin D Receptors,1,25-Dihydroxycholecalciferol Receptor,1,25-Dihydroxycholecalciferol Receptors,1,25-Dihydroxyvitamin D 3 Receptor,1,25-Dihydroxyvitamin D3 Receptor,1,25-Dihydroxyvitamin D3 Receptors,Calcitriol Receptor,Receptors, 1,25-Dihydroxyvitamin D 3,Receptors, Cholecalciferol,Receptors, Vitamin D 3,Receptors, Vitamin D3,Vitamin D 3 Receptor,Vitamin D Receptor,Vitamin D3 Receptor,Vitamin D3 Receptors,1,25 Dihydroxycholecalciferol Receptor,1,25 Dihydroxycholecalciferol Receptors,1,25 Dihydroxyvitamin D 3 Receptor,1,25 Dihydroxyvitamin D3 Receptor,1,25 Dihydroxyvitamin D3 Receptors,D Receptor, Vitamin,D Receptors, Vitamin,D3 Receptor, 1,25-Dihydroxyvitamin,D3 Receptor, Vitamin,D3 Receptors, 1,25-Dihydroxyvitamin,D3 Receptors, Vitamin,Receptor, 1,25-Dihydroxycholecalciferol,Receptor, 1,25-Dihydroxyvitamin D3,Receptor, Calcitriol,Receptor, Vitamin D,Receptor, Vitamin D3,Receptors, 1,25-Dihydroxycholecalciferol,Receptors, 1,25-Dihydroxyvitamin D3
D020022 Genetic Predisposition to Disease A latent susceptibility to disease at the genetic level, which may be activated under certain conditions. Genetic Predisposition,Genetic Susceptibility,Predisposition, Genetic,Susceptibility, Genetic,Genetic Predispositions,Genetic Susceptibilities,Predispositions, Genetic,Susceptibilities, Genetic

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