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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2001-10-30
pubmed:abstractText
Genetic factors play an important role in the pathogenesis of osteoporosis by affecting bone mineral density and other predictors of osteoporotic fracture risk such as ultrasound properties of bone and skeletal geometry. We previously identified a polymorphism of a Sp1 binding site in the Collagen Type 1 Alpha 1 gene (COLIA1) that has been associated with reduced BMD and an increased risk of osteoporotic fractures in several populations. Here we looked for evidence of an association between COLIA1 Sp1 alleles and femoral neck geometry. The study group comprised 153 patients with hip fracture, and 183 normal subjects drawn at random from the local population. Femoral neck geometry was assessed by analysis of pelvic radiographs in the fracture patients and DXA scan printouts in the population-based subjects. The COLIA1 genotypes were detected by polymerase chain reaction and were in Hardy Weinberg equilibrium: "SS" = 222 (66%); "Ss" = 105 (31.3%); and "ss" = 9 (2.7%). There was no significant difference in hip axis length or femoral neck width between the genotype groups, but femoral neck-shaft angle was increased by about 2 degrees in the Ss/ss genotype groups (n = 114) when compared with SS homozygotes (n = 222) (P = 0.001). Previous studies have suggested that an increased femoral neck-shaft angle may increase the risk of hip fracture in the event of a sideways fall by influencing the forces that act on the femoral neck. The association COLIAI genotype and increased femoral neck angle noted here may therefore contribute to the BMD-independent increase in hip fracture risk noted in previous studies of individuals who carry the 's' allele.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0171-967X
pubmed:author
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
67-72
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Association between COLIA1 Sp1 alleles and femoral neck geometry.
pubmed:affiliation
Department of Medicine and Therapeutics, University of Aberdeen Medical School, Foresterhill, UK.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't