1 research outputs found
Frequency of fokI and taqI polymorphism of vitamin D receptor gene in Indian population and its association with 25-hydroxyvitamin D levels
Background: The VDR protein is at the centre of the vitamin D
endocrine system, a complex physiological system with substantial
feedback regulatory mechanisms involved in maintaining serum calcium
and 1, 25 dihydroxy vitamin D3. Variations in VDR gene are shown to
have implications in several diseases and have also been implicated as
an important genetic factor affecting bone mass. Aim: To determine the
frequency of Fok I and Taq I variants in healthy Indian individuals and
its association with 25-OH-Vitamin D levels. Settings and Design:
Blood samples were collected from 143 unrelated normal individuals
(Male-84 and Female-59) and their genotypes determined. Materials and
Methods: After amplification by polymerase chain reaction, each
polymorphism was genotyped by restriction fragment length polymorphism.
For 100 normal healthy individuals 25-hydroxyvitamin D estimation was
done using DiaSorin kit method. Statistical Analysis: Graph pad
software was used to calculate the P values from the Chi-square.
Results: Out of 143 samples analyzed for FokI and TaqI polymorphisms
the following genotypic frequency was obtained FF 59%, Ff 36%, ff 5%
and TT 49%, Tt 43%, tt 8% respectively. Conclusions: Results indicate
that the distribution of the polymorphic loci Fok I and Taq I vary
considerably not only in different populations, but also within India.
Furthermore, when the genotypes were analyzed with respect to
25-OH-Vitamin D levels, a significant association was seen for the Taq
1 SNP but not with the Fok I