| Lack of Association between Bone Mineral Density and Leptin Receptor Gene
Polymorphism in Young Women and Postmenopausal Women
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| 젊은 여성과 폐경 후 여성에서 렙틴 수용체 유전자
Gln223Arg 다형성과 골밀도의 상관관계
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| 송기호,고정민,홍정수2,김재승1,김신윤3,김기수 |
| 울산대학교 의과대학 서울아산병원 내과학교실, 핵의학과학교실1, 아산생명과학연구소2,
경북대학교 의과대학 정형외과학교실3
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| Abstract |
Background
Osteoporosis is a very common metabolic bone disease with a strong genetic component. Elucidation of genetic component for osteoporosis is an important step in the development of novel and safe therapeutic strategies for preventing and treating osteoporosis. Recently, we have reported a significant association between bone mineral density (BMD) and leptin receptor (LEPR) gene polymorphism in young men. Therefore, to investigate that such correlation could also exist in women, we examined 100 young women aged 20~35 years and 265 untreated postmenopausal women aged 40~75 years.
Methods
The genotypes of LEPR were determined by using the polymerase chain reaction-restriction fragment length polymorphism method. All subjects were requested to fill out the questionnaires asking the amount of calcium intake, age of menarche, duration of menopause, smoking and exercise status. We checked BMD in spine and femoral neck with dual-energy X-ray absorptiometry (DXA). The subjects were grouped into two according to the presence or absence of Gln allele in LEPR Gln223Arg polymorphism. Using multiple linear regression analysis, we compared the BMD of spine and femoral neck in two groups.
Results
In contrast to our previous study with young men, we did not observe statistically significant difference in BMD at any sites between two groups of women irrespective of menstrual states suggesting that LEPR gene does not have a significant impact on female BMD.
Conclusion
There is sexual dimorphism in the contribution of LEPR gene Gln223Arg polymorphism to BMD.
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| Key Words:
Bone Mineral Density, Women, Leptin receptors, Polymorphism, Sexual dimorphism |
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