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Tumor necrosis factor-alpha haplotype is strongly associated with bone mineral density in patients with Crohn's disease.
J Gastroenterol Hepatol. 2007 Jun; 22(6):913-9.JG

Abstract

BACKGROUND AND AIM

There is limited consensus on the major variables that determine bone integrity and bone loss in patients with Crohn's disease. Twin and family studies in the general population indicate that up to 85% of variance in bone mineral density is inherited. The aim was to determine the prevalence of bone loss and both molecular and clinical risk factors for bone loss in a large Crohn's disease population.

METHODS

This was a cross-sectional study of 304 patients with Crohn's disease attending the Inflammatory Bowel Disease unit at Royal Brisbane and Women's Hospital, Queensland. The results of bone density testing were ascertained directly and by a mailed questionnaire. Bone mineral density data were combined with clinical information and correlated with single nucleotide polymorphisms within the tumor necrosis factor-alpha (TNF-alpha), interleukin-10, and NOD2/CARD15 genes.

RESULTS

Of 304 Crohn's disease patients, 101 had undergone previous bone density testing. Forty-five patients (45%) had been diagnosed with osteopenia and 18 (18%) were osteoporotic. After multivariate analysis, both the TNF-alpha GT haplotype and the -857 CC genotype showed strong associations with bone mineral density overall (P = 0.003 and P = 0.002, respectively). Body mass index (P = 0.01) and previous bowel resection in female patients (P = 0.03) were predictive of a higher spine bone density, while body mass index (P = 0.003) and the effect of years since first bowel resection (P = 0.02) remained independent predictors of proximal femur bone mineral density. There were no other significant associations observed.

CONCLUSIONS

This study has identified a novel protective association between a TNF-alpha haplotype and bone mineral density in Crohn's disease. It confirms the important influence of body mass index and intestinal resection on bone loss in this population.

Authors+Show Affiliations

School of Human Movement Studies, University of Queensland, Brisbane, Queensland, Australia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17565648

Citation

Lee, Naomi, et al. "Tumor Necrosis Factor-alpha Haplotype Is Strongly Associated With Bone Mineral Density in Patients With Crohn's Disease." Journal of Gastroenterology and Hepatology, vol. 22, no. 6, 2007, pp. 913-9.
Lee N, Fowler E, Mason S, et al. Tumor necrosis factor-alpha haplotype is strongly associated with bone mineral density in patients with Crohn's disease. J Gastroenterol Hepatol. 2007;22(6):913-9.
Lee, N., Fowler, E., Mason, S., Lincoln, D., Taaffe, D. R., & Radford-Smith, G. (2007). Tumor necrosis factor-alpha haplotype is strongly associated with bone mineral density in patients with Crohn's disease. Journal of Gastroenterology and Hepatology, 22(6), 913-9.
Lee N, et al. Tumor Necrosis Factor-alpha Haplotype Is Strongly Associated With Bone Mineral Density in Patients With Crohn's Disease. J Gastroenterol Hepatol. 2007;22(6):913-9. PubMed PMID: 17565648.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Tumor necrosis factor-alpha haplotype is strongly associated with bone mineral density in patients with Crohn's disease. AU - Lee,Naomi, AU - Fowler,Elizabeth, AU - Mason,Susan, AU - Lincoln,Douglas, AU - Taaffe,Dennis R, AU - Radford-Smith,Graham, PY - 2007/6/15/pubmed PY - 2007/9/28/medline PY - 2007/6/15/entrez SP - 913 EP - 9 JF - Journal of gastroenterology and hepatology JO - J Gastroenterol Hepatol VL - 22 IS - 6 N2 - BACKGROUND AND AIM: There is limited consensus on the major variables that determine bone integrity and bone loss in patients with Crohn's disease. Twin and family studies in the general population indicate that up to 85% of variance in bone mineral density is inherited. The aim was to determine the prevalence of bone loss and both molecular and clinical risk factors for bone loss in a large Crohn's disease population. METHODS: This was a cross-sectional study of 304 patients with Crohn's disease attending the Inflammatory Bowel Disease unit at Royal Brisbane and Women's Hospital, Queensland. The results of bone density testing were ascertained directly and by a mailed questionnaire. Bone mineral density data were combined with clinical information and correlated with single nucleotide polymorphisms within the tumor necrosis factor-alpha (TNF-alpha), interleukin-10, and NOD2/CARD15 genes. RESULTS: Of 304 Crohn's disease patients, 101 had undergone previous bone density testing. Forty-five patients (45%) had been diagnosed with osteopenia and 18 (18%) were osteoporotic. After multivariate analysis, both the TNF-alpha GT haplotype and the -857 CC genotype showed strong associations with bone mineral density overall (P = 0.003 and P = 0.002, respectively). Body mass index (P = 0.01) and previous bowel resection in female patients (P = 0.03) were predictive of a higher spine bone density, while body mass index (P = 0.003) and the effect of years since first bowel resection (P = 0.02) remained independent predictors of proximal femur bone mineral density. There were no other significant associations observed. CONCLUSIONS: This study has identified a novel protective association between a TNF-alpha haplotype and bone mineral density in Crohn's disease. It confirms the important influence of body mass index and intestinal resection on bone loss in this population. SN - 0815-9319 UR - https://www.unboundmedicine.com/medline/citation/17565648/Tumor_necrosis_factor_alpha_haplotype_is_strongly_associated_with_bone_mineral_density_in_patients_with_Crohn's_disease_ L2 - https://doi.org/10.1111/j.1440-1746.2006.04679.x DB - PRIME DP - Unbound Medicine ER -