New gene offers hope for preventive medicine against fractures
A big international study has identified a special gene that regulates bone density and bone strength. The gene can be used as a risk marker for fractures and opens up opportunities for preventive medicine against fractures. The study, led by the Sahlgrenska Academy, was published in the journal PLoS Genetics.
We could then establish that the gene had a crucial effect on the thickness and density of the femur.
The international study, which involved more than 50 researchers from Europe, North America and Australia and was led by Associate Professor Mattias Lorentzon and Professor Claes Ohlsson at the Sahlgrenska Academy, is based on extensive genetic analyses of the genetic material of 10,000 patients and experimental studies in mice.
Through the combined studies, researchers have succeeded in identifying a special gene, Wnt16, with a strong link to bone density and so-called cortical bone thickness, which is decisive to bone strength.
The genetic variation studied by the international research network could predict, for example, the risk of a forearm fracture in a large patient group of older women.
“In the experimental study, we could then establish that the gene had a crucial effect on the thickness and density of the femur. In mice without the Wnt16 gene, the strength of the femur was up to 61 per cent lower,” according to Mattias Lorentzon at the Institute of Medicine, the Sahlgrenska Academy.
The discovery opens up opportunities to develop new medicines to prevent the most common fractures.
“Low cortical bone mass is a decisive factor in, for example, hip and forearm fractures. Unfortunately, the treatments currently used for brittleness of the bones have very little effect on the cortical bone mass,” said Mattias Lorentzon.
“If we can learn to stimulate the signaling routes of the Wnt16 gene, we could strengthen the skeleton in these parts too, thereby preventing the most common and serious fractures. The discovery of Wnt16 and its regulation of cortical bone mass is therefore very important,” according to Mattias Lorentzon.
The article “WNT16 influences Bone Mineral Density, Cortical Bone Thickness, Bone Strength and Osteoporotic Fracture Risk” will be published in PLoS Genetics on 5 July.
Link to article: http://bit.ly/P2bOKN
Mattias Lorentzon, Associate Professor in Endocrinology at the Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, and active at the Center for Bone and Arthritis Research
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The Sahlgrenska Academy is the faculty of health sciences at the University of Gothenburg. Education and research are conducted within the fields of pharmacy, medicine, odontology and health care sciences. About 4,000 undergraduate students and 1,200 postgraduate students are enrolled at Sahlgrenska Academy. Around 1,400 people work at the Sahlgrenska Academy. 850 of them are researchers and/or teachers. 2009 Sahlgrenska Academy had a turnover of 2,100 million SEK.