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VDBP, CYP27B1, and 25-Hydroxyvitamin D Gene Polymorphism Analyses in a Group of Sicilian Multiple Sclerosis Patients

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Abstract

Multiple sclerosis (MS) is a chronic demyelinating disease of central nervous system regarded as one of the most common causes of neurological disability in young adults. The exact etiology of MS is not yet known, although epidemiological data indicate that both genetic susceptibility and environmental exposure are involved. A poor vitamin D status has been proposed as the most attractive environmental factor. Several evidence have highlighted the importance of mutations in vitamin D-regulating genes for vitamin D status. The purpose of our study was to assess the genetic variants of VDBP and CYP27B1 in MS patients and in a control group. A total of 192 subjects, including 100 MS patients and 92 healthy controls, were genotyped by polymerase chain reaction followed by restriction fragment length polymorphism analyses. Serum 25-hydroxyvitamin D levels were measured in MS patients and controls by high-performance liquid chromatography. We did not observe any statically significant difference in the distribution of genotypic VDBP variants between the study groups. 25(OH)D plasma levels were significantly higher in the control group versus MS patients; MS patients who carried Gc2 showed lower 25(OH)D plasma levels and those who carried Gc1f showed higher levels. We observed only wild-type allele for CYP27B1 mutations analyzed both in MS patients and in the control group. In conclusion, our findings do not support a role of an independent effect of the investigated vitamin D-related gene variants, VDBP and CYP27B1, in the risk of MS.

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Abbreviations

EDSS:

Expanded Disability Status Scale

MSSS:

Multiple Sclerosis Severity Score

ARR:

Annualized Relapse Rates

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    Authors and Affiliations

    1. Dipartimento di Biopatologia e Biotecnologie Mediche, Università di Palermo, Palermo, Italy

      L. Agnello, C. Scazzone, B. Lo Sasso, C. Bellia, G. Bivona, R. Schillaci & Marcello Ciaccio

    2. Dipartimento di Biomedicina Sperimentale e Neuroscienze, Università di Palermo, Palermo, Italy

      S. Realmuto, F. Brighina, P. Ragonese & G. Salemi

    Authors
    1. L. Agnello
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    2. C. Scazzone
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    3. B. Lo Sasso
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    4. C. Bellia
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    5. G. Bivona
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    6. S. Realmuto
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    7. F. Brighina
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    8. R. Schillaci
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    9. P. Ragonese
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    10. G. Salemi
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    11. Marcello Ciaccio
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    Corresponding author

    Correspondence to Marcello Ciaccio.

    Additional information

    L. Agnello and C. Scazzone have contributed equally to the study.

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    Agnello, L., Scazzone, C., Lo Sasso, B. et al. VDBP, CYP27B1, and 25-Hydroxyvitamin D Gene Polymorphism Analyses in a Group of Sicilian Multiple Sclerosis Patients. Biochem Genet 55, 183–192 (2017). https://doi.org/10.1007/s10528-016-9783-4

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    • DOI: https://doi.org/10.1007/s10528-016-9783-4

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