最近歐洲一國際研究小組宣布,,他們發(fā)現(xiàn)了與變形性骨炎相關(guān)的三個新基因,這些基因變異會影響到骨骼修復(fù)的速率,,從而引發(fā)該種疾病,。
變形性骨炎,又稱佩吉特氏病,,是一種以進行性風濕樣骨關(guān)節(jié)痛,、脊柱和四肢畸形、病理骨折及腦,、脊髓壓迫癥狀為主要特征的慢性骨疾病,,其發(fā)病原因一直不明。變形性骨炎的發(fā)病率因地區(qū),、種族,、年齡的不同而有很大差異,在西歐和澳大利亞,、新西蘭等地區(qū)更為多見,。而英國受此疾病影響的人口多達100萬,其比例遠高于世界其他任何地方,。
包括英國,、西班牙、澳大利亞和新西蘭等國科學家在內(nèi)的一國際研究小組對1250名變形性骨炎患者的基因進行了研究,。他們發(fā)現(xiàn),,相比于健康人,70%的變形性骨炎患者的CSF1,、OPTN和TNFRSF11A基因更易出現(xiàn)缺陷,。這表明這些基因在變形性骨炎的發(fā)病過程中起著至關(guān)重要的作用,,也揭示了為什么這種疾病患者都有家族遺傳史。而在此之前,,研究人員只發(fā)現(xiàn)一種與該疾病有關(guān)的基因,,其變異導(dǎo)致了大約10%的病例發(fā)生。
英國愛丁堡大學主持該項研究的風濕病學專家斯圖亞特·拉斯頓教授表示,,新基因的發(fā)現(xiàn)是變形性骨炎研究的一個重大進展,,對確定該病的發(fā)病率具有明顯的預(yù)測作用,這對于醫(yī)生判斷病人患上此種疾病的風險十分有幫助,,使他們能在患者骨骼受到實質(zhì)性損害之前采取有效的防治手段,,以避免其骨骼出現(xiàn)不可逆轉(zhuǎn)性的損傷。(生物谷Bioon.com)
生物谷推薦原文出處:
Nature Genetics (2010) doi:10.1038/ng.562
Genome-wide association study identifies variants at CSF1, OPTN and TNFRSF11A as genetic risk factors for Paget's disease of bone
Omar M E Albagha, Micaela R Visconti, Nerea Alonso, Anne L Langston, Tim Cundy, Rosemary Dargie, Malcolm G Dunlop, William D Fraser, Michael J Hooper, Gianluca Isaia, Geoff C Nicholson, Javier del Pino Montez, Rogelio Gonzalez-Sarmiento, Marco di Stefano, Albert Tenesa, John P Walsh & Stuart H Ralston
Paget's disease of bone (PDB) is a common disorder with a strong genetic component characterized by focal increases in bone turnover, which in some cases is caused by mutations in SQSTM1. To identify additional susceptibility genes, we performed a genome-wide association study in 750 individuals with PDB (cases) without SQSTM1 mutations and 1,002 controls and identified three candidate disease loci, which were then replicated in an independent set of 500 cases and 535 controls. The strongest signal was with rs484959 on 1p13 near the CSF1 gene (P = 5.38 × 10?24). Significant associations were also observed with rs1561570 on 10p13 within the OPTN gene (P = 6.09 × 10?13) and with rs3018362 on 18q21 near the TNFRSF11A gene (P = 5.27 × 10?13). These studies provide new insights into the pathogenesis of PDB and identify OPTN, CSF1 and TNFRSF11A as candidate genes for disease susceptibility.