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Infertility risk increased 2.5 X by poor Vitamin D Receptor – July 2023

Genetic association of vitamin D receptor gene with female infertility

Nucleosides Nucleotides Nucleic Acids . 2023 Jul 26;1-18. doi: 10.1080/15257770.2023.2236167   PDF is behind a $58 paywall
Mussarat Ashraf 1, Haq Nawaz Khan 1, Rabab Ibrahim 1, Maheen Shahid 1, Sher Khan 1, Ambrin Fatima 1, Saif Ullah 2, Rehana Rehman 1

Background: Infertility is defined as failure to achieve a clinical pregnancy after 12 months of unprotected intercourse. It affects 15% of couples globally and 22% of couples within Pakistan. Female infertility can be caused by numerous genetic or environmental factors including hormone imbalances and exposure to chemicals or radiation. The prevalence of vitamin D deficiency among the adult population was reported to be 14-59% with a higher prevalence in Asian countries. Furthermore, the expression of Vitamin D receptor (VDR) can play a vital role in the reproductive organs of females. Hence, the aim of our present study was to check the association of VDR polymorphisms with infertile females. For this purpose, blood samples were collected for genotyping of four known VDR mutations [FokI (rs2228570), TaqI (rs731236), ApaI (rs7975232), and BsmI (rs1544410)] via PCR-based RFLP assay.

Results: Genotyping indicated that FokI, TaqI, and ApaI are associated with infertility (p = 0.004*, p = 0.013*, and p = 0.033*, respectively). However, BsmI did not show any significance. Multinomial regression analysis indicated that FokI heterozygous genotypes increase the risk of infertility by 2.5 times (hetero: OR = 2.5, 95%, p = 0.001*) as compared to wild type. Heterozygous genotypes of TaqI and ApaI were found to play a protective role and reduce the risk of infertility by 58 and 52%, respectively [TaqI: OR = 0.42, 95%, p = 0.004*, ApaI: OR = 0.48, 95%, p = 0.01*, respectively] as compared to wild type. Multinomial logistic regression analysis was also performed for allelic data as well.

Conclusion: Thus, it could be summarized that among the studied polymorphisms of VDR, FokI SNP greatly increased the risk of infertility, while TaqI and ApaI genotypes protect from infertility. However, BsmI does not influence the risk of infertility in Pakistani females.

VitaminDWiki - 7 studies in both categories Fertility and Vitamin D Receptor

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VitaminDWiki – Fertility and Sperm category contains

139 items in Fertility or Sperm in VitaminDWiki

See also:
Overview Women and Vitamin D
Overview Pregnancy and vitamin D    Fertility and Vitamin D – several articles
Ensure a healthy pregnancy and baby - take Vitamin D before conception
IVF OR "IN VITRO FERTILIZATION" etc. in 18 VitaminDWiki titles
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VitaminDWiki - The risk of 44+ diseases at least double with poor Vitamin D Receptor

VitaminDWiki - Vitamin D Receptor activation can be increased in 14 ways

Resveratrol,  Omega-3,  MagnesiumZinc,   Quercetin,   non-daily Vit D,  Curcumin, intense exercise, Butyrate   Ginger,   Essential oils, etc  Note: The founder of VitaminDWiki uses 10 of the 14 known VDR activators