Association of Vitamin D Receptor (VDR) Gene Polymorphisms with Osteoporotic Vertebral Fracture Risk: A Case-Control...

Area of Science:

• Genetics
• Bone Metabolism
• Osteoporosis Research

Background:

• Osteoporosis is a skeletal disorder increasing fracture risk, particularly vertebral fractures.
• Genetic factors significantly influence susceptibility to osteoporotic fractures.
• Vitamin D receptor (VDR) gene polymorphisms are implicated in bone metabolism and fracture risk.

Purpose of the Study:

• To investigate the distribution of VDR gene polymorphisms (FokI, BsmI, ApaI, TaqI).
• To assess the association between VDR gene polymorphisms and osteoporotic vertebral fracture susceptibility.

Main Methods:

• A case-control study involving 86 individuals (43 patients with osteoporotic vertebral fractures, 43 controls).
• Analysis of VDR gene polymorphisms (ApaI, TaqI, BsmI, FokI) using real-time polymerase chain reaction.
• Comparison of genotype distributions and evaluation of Hardy-Weinberg equilibrium.

Main Results:

• A significant difference was found for the ApaI polymorphism (p=0.002).
• The GG genotype of ApaI was more frequent in patients, indicating increased fracture risk.
• Variant genotypes (GT, TT) of ApaI were more prevalent in controls, suggesting reduced fracture susceptibility.

Conclusions:

• The ApaI polymorphism of the VDR gene may act as a protective factor against osteoporotic vertebral fractures.
• No significant associations were found for TaqI, BsmI, or FokI VDR gene polymorphisms.
• Further research in diverse populations is needed to validate these findings on VDR gene variants and fracture risk.