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- Title
Sibling Pair Linkage and Association Studies between Bone Mineral Density and the Insulin-Like Growth Factor I Gene Locus.
- Authors
TAKACS, ISTVAN; KOLLER, DANIEL L.; PEACOCK, MUNRO; CHRISTIAN, JOE C.; HUI, SIU L.; CONNEALLY, P. MICHAEL; JOHNSTON JR., C. CONRAD; FOROUD, TATIANA; ECONS, MICHAEL J.
- Abstract
A major determinant of the risk for osteoporosis in later life is bone mineral density (BMD) attained during early adulthood. BMD is a complex trait that presumably is influenced by multiple genes. Insulin-like growth factor I (IGF-I) is an attractive candidate gene for osteoporosis susceptibility, because IGF-I has marked effects on bone cells and has been implicated in the pathogenesis of osteoporosis. The IGF-I gene contains a microsatellite repeat polymorphism approximately 1 kb upstream from the IGF-I gene transcription start site, and previous investigators have found a higher prevalence of the 192/192 genotype of this polymorphism among men with idiopathic osteoporosis compared to controls. In this study we used this IGF-I polymorphism to test for an association between this polymorphism and BMD in our large population of premenopausal women (1 sister randomly chosen from 292 Caucasian and 71 African-American families). We also used this polymorphism to detect linkage to BMD elsewhere in the IGF-I gene or in a nearby gene using sibling pair linkage analysis in healthy premenopausal sister pairs (542 sibling pairs: 418 Caucasian and 124 African-American). Neither test provided any evidence of linkage or association between the IGF-I gene locus and spine or femoral neck BMD in Caucasians or <span class="spellErrorText">AfricanAmericans</span>.
- Publication
Journal of Clinical Endocrinology & Metabolism, 1999, Vol 84, Issue 12, p4467
- ISSN
0021-972X
- Publication type
Article
- DOI
10.1210/jcem.84.12.6179