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Source: Thailand Medical News  Nov 24, 2019  3 years ago
Researchers From Uppsala University, Sweden Using Genome Sequencing To Identify More Inflammatory Biomarkers
Researchers From Uppsala University, Sweden Using Genome Sequencing To Identify More Inflammatory Biomarkers
Source: Thailand Medical News  Nov 24, 2019  3 years ago
Researchers from Uppsala University, Sweden in a new study have shown that whole-genome sequencing increases the precision of genetic studies, which in turn can improve our perspectives of how to use biomarkers to discover disease. The results are published in the scientific journal Scientific Reports.

Typically, biomarkers, such as specific proteins circulating in our blood stream, are often used in the clinic as indicators of biological processes connected to disease. Proteins in our body are affected not only by disease progression but also by environment and lifestyle, as well as our genetic material. The best proteins for diagnosis are preferably not affected too much by genetics, since this can cause difficulties in good diagnosis of disease.

Results of GWAS analysis of the abundance of the 42 significant plasma proteins. Each dot represents a locus with a significant association. A non-filled dot represents an association in trans (on another chromosome than the gene encoding the biomarker) and the filled dots an association in cis. The dots are labelled with the names of the genes/locus that the top variant is located in in italics and the associated biomarker in brackets. Two genes are shown if it is intergenic. Red color depicts the centromere. Credit: Scientific Reports

The researchers in this study have investigated protein biomarkers that increase or decrease with inflammation in around a thousand individuals from a Swedish health study. In contrast to earlier studies, which only examined selected genetic positions, the researchers have performed an analysis using newer techniques to investigate all genetic positions in an individual, a whole-genome sequencing. By looking at over three billion positions in our genetic material, the researchers found 18 new genes that are regulated in disease, for example in Crohn's disease and rheumatoid arthritis.

This new study shows that a larger set of inflammatory biomarkers are affected by our genes than previously believed, but also that many of the biomarkers seem to be directly linked with the risk of developing an inflammatory disease.

Dr Julia Höglund, Ph.D. student at the Department of Immunology, Genetics and Pathology at Uppsala University, and one of the leading researchers behind the study told Thailand Medical News via phone interview, "We saw that individuals with genetically increased levels of several inflammatory biomarkers also had an increased risk of inflammatory bowel disease,(IBD)."

Information from this study can aid in increasing medical and healthcare professional’s understanding of how  genes affect the risk of common diseases, as well as how biomarkers can be more reliably used in the f uture diagnosis of various diseases.

The researchers will also be compiling a comprehensive database of all these new identified biomarkers.
Reference: Julia Höglund et al. Improved power and precision with whole genome sequencing data in genome-wide association studies of inflammatory biomarkers, Scientific Reports (2019). DOI: 10.1038/s41598-019-53111-7


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