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Population differences in the distribution of HLA-B27 allele in ankylosing spondylitis
Lennerová, Tereza ; Hušáková, Markéta (advisor) ; Novota, Peter (referee)
Ankylosing spondylitis (AS) is a chronic inflammatory disease affecting mainly the spine and the sacroiliac joints. This disorder has a genetic background and is strongly associated with HLA-B27 gene which occurs in about 90 % of patients. The prevalence of ankylosing spondylitis usually correlates with the frequency of HLA-B27. The strength of association HLA-B27 with AS varies between different populations and is also distinct for individual alleles of HLA-B27 gene. Some alleles can increase a risk of ankylosing spondylitis while others may have a protective effect. This work deals with the population differences in the occurrence of HLA-B27 alleles and their relation to development of ankylosing spondylitis. Key words: ankylosing spondylitis, HLA-B27, allele, subtype, population differences
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The role of biomarkers in erosive osteoarthritis of the hands
Lennerová, Tereza ; Šenolt, Ladislav (advisor) ; Tachezy, Ruth (referee)
Hand osteoarthritis (OA) is a degenerative joint disease that causes pain, functional limitation and negatively affects the patients' quality of life. The most severe subtype of this disease is erosive OA. Erosive hand OA is characterized by an abrupt onset, inflammation and is linked to worse outcomes than non-erosive hand OA. Current methods do not allow early diagnosis or to distinguish between patients with different forms at disease onset. This could be changed by the utilization of biomarkers in clinical practice. Biomarkers are molecules released into circulation that reflect biological processes. The main goal of this study was to analyze the levels of circulating biomarkers with the aim to differentiate patients from healthy subjects and patients with erosive OA from patients with non-erosive disease. Serum concentrations of seven biomarkers and the expression of plasma microRNAs were determined. Patients with hand OA showed altered cartilage metabolism, increased levels of adiponectin, decreased levels of clusterin and a dysregulated expression of several microRNAs in comparison to the healthy population. Patients with erosive OA had lower levels of clusterin and decreased expression of miR-151-3p than those with the non-erosive form of the disease. These findings suggest the potential...
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Population differences in the distribution of HLA-B27 allele in ankylosing spondylitis
Lennerová, Tereza ; Hušáková, Markéta (advisor) ; Novota, Peter (referee)
Ankylosing spondylitis (AS) is a chronic inflammatory disease affecting mainly the spine and the sacroiliac joints. This disorder has a genetic background and is strongly associated with HLA-B27 gene which occurs in about 90 % of patients. The prevalence of ankylosing spondylitis usually correlates with the frequency of HLA-B27. The strength of association HLA-B27 with AS varies between different populations and is also distinct for individual alleles of HLA-B27 gene. Some alleles can increase a risk of ankylosing spondylitis while others may have a protective effect. This work deals with the population differences in the occurrence of HLA-B27 alleles and their relation to development of ankylosing spondylitis. Key words: ankylosing spondylitis, HLA-B27, allele, subtype, population differences
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