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Posttraumatic stress disorder 5X more likely if both low vitamin D and poor gene (VDBP) – Sept 2019

Posttraumatic stress disorder is associated with reduced vitamin D levels and functional polymorphisms of the vitamin D binding-protein in a population-based sample.

Prog Neuropsychopharmacol Biol Psychiatry. 2019 Sep 10:109760. doi: 10.1016/j.pnpbp.2019.109760.

VitaminDWiki

Vitamin D Binding Protein category listing has 140 items and the following

Vitamin D Binding Protein (GC) gene can decrease the bio-available Vitamin D that can get to cells,

  • GC is not the only such gene - there are 3 others, all invisible to standard Vitamin D tests
  • The bio-available calculation does not notice the effect of GC, CYP27B1, CYP24A1, and VDR
  • The actual D getting to the cells is a function of measured D and all 4 genes
  • There is >2X increase in 8+ health problems if have poor VDBP (GC)
  • It appears that VDBP only blocks oral vitamin D,


Terock J1, Hannemann A2, Van der Auwera S3, Janowitz D4, Spitzer C5, Bonk S4, Völzke H6, Grabe HJ3.

  • 1 Department of Psychiatry and Psychotherapy, HELIOS Hanseklinikum Stralsund, Rostocker Chaussee 70, 18437 Stralsund, Germany; Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Ellernholzstraße 1-2, 17475 Greifswald, Germany. Electronic address: jan.terock at helios-gesundheit.de.
  • 2 Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, Greifswald, Germany; German Centre for Cardiovascular Research DZHK, Partner Site Greifswald, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475 Greifswald, Germany.
  • 3 Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Ellernholzstraße 1-2, 17475 Greifswald, Germany; German Center for Neurodegenerative Diseases DZNE, Site Rostock/Greifswald, Ellernholzstraße 1-2, 17475 Greifswald, Germany.
  • 4 Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Ellernholzstraße 1-2, 17475 Greifswald, Germany.
  • 5 Department of Psychosomatics and Psychotherapeutic Medicine, University Medicine Rostock, Gehlsheimer Straße 20, 18147 Rostock, Germany.
  • 6 Institute for Community Medicine, University Medicine Greifswald, Ellernholzstraße 1-2, Greifswald, Germany.


OBJECTIVE:
Low levels of vitamin D were found to be associated with different mental disorders. However, the role of vitamin D in the pathogenesis of PTSD is unclear. In this study, we aimed at investigating whether PTSD is linked to reduced vitamin D levels and vitamin D deficiency. Moreover, we sought to investigate the role of the vitamin D-binding protein (also group-specific component or Gc) by testing if two functional polymorphisms (rs4588 and rs7041) were associated with vitamin D levels and PTSD.

METHODS:
Serum levels of total 25(OH)D were measured in a general-population sample of the Study of Health in Pomerania (SHIP-1). The number of traumatic events and status of PTSD were assessed using the PTSD module of the Structured Clinical Interview for the DSM-IV. Study participants were genotyped for rs4588 and rs7041. Associations of 25(OH)D levels and the genotypes with PTSD were tested in subjects with at least one traumatic event (n = 1653).

RESULTS:
25(OH)D levels were inversely (OR: 0.96; p = 0.044) and vitamin D deficiency was positively (OR = 2.02; p = 0.028) associated with PTSD. Both polymorphisms of the Gc were associated with 25(OH)D levels and PTSD: Carriers of the CC-genotype of rs4588 showed significantly higher 25(OH)D levels (ß = 0.179, p < 0.001) and lower odds for PTSD (OR = 0.35; p = 0.023) compared to the AA-genotype. Likewise, carriers of the TT-allele of rs7041 showed lower 25(OH)D levels (-0.122; p < 0.001) and increased odds for PTSD (OR = 2.80; p = 0.015) compared to the GG-genotype.

CONCLUSIONS:
Our results suggest that an altered vitamin D metabolism may be involved in the pathophysiology of PTSD. Also, genotypes of the Gc and thus Gc serum levels may impact on PTSD development over and above the effects of 25(OH)D. Our findings contribute to explain the associations of PTSD with different mental and physical disorders.


Created by admin. Last Modification: Saturday September 14, 2019 16:14:31 GMT-0000 by admin. (Version 3)
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