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Indian Journal of Human Genetics
Medknow Publications on behalf of Indian Society of Human Genetics
ISSN: 0971-6866
EISSN: 0971-6866
Vol. 15, No. 3, 2009, pp. 108-113
Bioline Code: hg09025
Full paper language: English
Document type: Research Article
Document available free of charge

Indian Journal of Human Genetics, Vol. 15, No. 3, 2009, pp. 108-113

 en Frequency of fokI and taqI polymorphism of vitamin D receptor gene in Indian population and its association with 25-hydroxyvitamin D levels
Bhanushali, Aparna A.; Lajpal, Namrata; Kulkarni, Smita S.; Chavan, Sandeep S.; Bagadi, Sarita S. & Das, Bibhu R.


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.
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.
: 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.

FokI, population genetics, single nucleotide polymorphism, TaqI, vitamin D receptor, 25-hydroxyvitamin D

© Copyright 2009 Indian Journal of Human Genetics.
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