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Parkinson’s risk increased 2 to 7 times depending on Vitamin D Receptor – Sept 2016

Vitamin D receptor gene variants in Parkinson’s disease patients

Egyptian Journal of Medical Human Genetics, http://dx.doi.org/10.1016/j.ejmhg.2016.08.004
Rokhsareh Meamara, b, Seyed Morteza Javadiradc, Niloofar Chitsaza, Mojgan Asadiana, Mahdi Kazemib, Maryam Ostadsharifd, e, , ,

VitaminDWiki Summary
AllelePD Risk
ApaI a1.85
FokI f2.46
Aa heterozygous of ApaI vs AA homozygous 7.44

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The items in both Parkinson's Disease and Vitamin D Receptor categories are listed here:

Overview Parkinson's and Vitamin D contains the following summary

Vitamin D Receptor category listing has 519 items along with related searches,
    and the following observation

Vitamin D ==> Calcidiol = measured Vitamin D ==> Calcitriol ==> Vitamin D Receptor ==> Cell
Thus you can have a good measured level of vitamin D,
   but the Cell does not get as much due to poor Vitamin D Receptor

 Download the PDF from VitaminDWiki

Background: Vitamin D plays an important role in neurodegenerative disorders as a crucial neuro-immunomodulator. Accumulating data provide evidences that vitamin D receptor (VDR) gene is a candidate gene for susceptibility to Parkinson’s disease (PD).

Aim: To find out whether the risk of the development of sporadic PD might be influenced by VDR gene polymorphisms in an Iranian population or not.

Subjects and methods: A genetic study was conducted to investigate the relationship between VDR gene polymorphisms and the severity of PD. Fifty-nine PD patients and 53 matched-healthy controls were genotyped using polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) analysis. For this purpose, four single nucleotide polymorphisms (SNPs) in VDR gene including FokI T > C (rs 10735810), BsmI A > G (rs 1544410), ApaI A > C (rs 7975232), and TaqI C > T (rs 731236) have been evaluated.

Results: Our genotyping studies revealed that holding ApaI a allele and FokI f allele could significantly increase the risk of developing Parkinson’s disease 1.85 and 2.46 times, respectively (p = 0.023 and 0.008). Moreover, Aa heterozygous of ApaI also shows a significantly elevated risk of developing PD when compared to AA homozygous (OR = 7.44, p = 0.005). For BsmI and TaqI polymorphisms, no significant difference in genotype or allele distribution was found between PD patients and the controls. Moreover, in this study, no significant association was found between different genotypes and Hoehn & Yahr staging and Unified Parkinson Disease Rating Stage (UPDRS) rating scale.

Conclusion: This study demonstrates a possible association between the VDR FokI and ApaI polymorphism and PD, indicating that VDR polymorphisms may change genetic susceptibility to sporadic PD in the Iranian population.

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Attached files

ID Name Comment Uploaded Size Downloads
15056 VDR Parkinson's 2016.pdf admin 17 Feb, 2021 401.22 Kb 471
7096 VDR Parkinsons.pdf admin 23 Sep, 2016 450.91 Kb 921