Serum amyloid A as a marker of ankylosing spondylitis activity
Serum amyloid A protein A (SAA) is a normal serum protein (serving as a precursor of fibrillar tissue protein AA), synthesized in the liver and a rapidly responding marker of the acute phase of inflammation. A constant high concentration of SAA is one of the factors in the development of AA-amyloido...
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| Language: | Russian |
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IMA-PRESS LLC
2021-12-01
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| Series: | Современная ревматология |
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| author | K. V. Sakharova M. V. Cherkasova Sh. F. Erdes |
| author_facet | K. V. Sakharova M. V. Cherkasova Sh. F. Erdes |
| author_sort | K. V. Sakharova |
| collection | DOAJ |
| description | Serum amyloid A protein A (SAA) is a normal serum protein (serving as a precursor of fibrillar tissue protein AA), synthesized in the liver and a rapidly responding marker of the acute phase of inflammation. A constant high concentration of SAA is one of the factors in the development of AA-amyloidosis. As a rule, secondary amyloidosis develops in patients with long-term and poorly controlled inflammatory diseases, including rheumatic diseases, one of which is ankylosing spondylitis (AS).Objective: to assess the level of SAA in AS patients and its relationship with indicators of disease activity.Patients and methods. The study included 124 patients with AS who met the modified New York 1984 criteria. The disease activity and functional status of patients were assessed according to the recommendations of Russian experts. SAA and CRP, ESR in blood serum were measured in all patients.Results and discussion. The median SAA concentration was 12.5 mg/L [4; 71.6]. Of 124 patients, 31% had SAA levels <5 mg/L and 69% had >5 mg/L. A strong correlation was found between the levels of SAA and CRP (r=0.80, p<0.000001), no significant relationship was found between SAA and ESR (r=0.31, p=0.92). The correlation between the AS activity according to the BASDAI index and SAA was weak (r=0.3, p<0.002), the correlation with ASDAS-CRP was moderate (r=0.54, p<0.00001).Conclusion. A statistically significant relationship was found between SAA and CRP levels, as well as the AS activity indices. Research has shown that SAA can be used as one of the markers of inflammation in AS. |
| format | Article |
| id | doaj-art-ea664b548d2a4c0dbcdcb7c71e716ef4 |
| institution | Kabale University |
| issn | 1996-7012 2310-158X |
| language | Russian |
| publishDate | 2021-12-01 |
| publisher | IMA-PRESS LLC |
| record_format | Article |
| series | Современная ревматология |
| spelling | doaj-art-ea664b548d2a4c0dbcdcb7c71e716ef42025-08-20T03:44:21ZrusIMA-PRESS LLCСовременная ревматология1996-70122310-158X2021-12-01156727510.14412/1996-7012-2021-6-72-752427Serum amyloid A as a marker of ankylosing spondylitis activityK. V. Sakharova0M. V. Cherkasova1Sh. F. Erdes2V.A. Nasonova Research Institute of RheumatologyV.A. Nasonova Research Institute of RheumatologyV.A. Nasonova Research Institute of RheumatologySerum amyloid A protein A (SAA) is a normal serum protein (serving as a precursor of fibrillar tissue protein AA), synthesized in the liver and a rapidly responding marker of the acute phase of inflammation. A constant high concentration of SAA is one of the factors in the development of AA-amyloidosis. As a rule, secondary amyloidosis develops in patients with long-term and poorly controlled inflammatory diseases, including rheumatic diseases, one of which is ankylosing spondylitis (AS).Objective: to assess the level of SAA in AS patients and its relationship with indicators of disease activity.Patients and methods. The study included 124 patients with AS who met the modified New York 1984 criteria. The disease activity and functional status of patients were assessed according to the recommendations of Russian experts. SAA and CRP, ESR in blood serum were measured in all patients.Results and discussion. The median SAA concentration was 12.5 mg/L [4; 71.6]. Of 124 patients, 31% had SAA levels <5 mg/L and 69% had >5 mg/L. A strong correlation was found between the levels of SAA and CRP (r=0.80, p<0.000001), no significant relationship was found between SAA and ESR (r=0.31, p=0.92). The correlation between the AS activity according to the BASDAI index and SAA was weak (r=0.3, p<0.002), the correlation with ASDAS-CRP was moderate (r=0.54, p<0.00001).Conclusion. A statistically significant relationship was found between SAA and CRP levels, as well as the AS activity indices. Research has shown that SAA can be used as one of the markers of inflammation in AS.https://mrj.ima-press.net/mrj/article/view/1230ankylosing spondylitishla-b27saacrpesrsecondary amyloidosis |
| spellingShingle | K. V. Sakharova M. V. Cherkasova Sh. F. Erdes Serum amyloid A as a marker of ankylosing spondylitis activity Современная ревматология ankylosing spondylitis hla-b27 saa crp esr secondary amyloidosis |
| title | Serum amyloid A as a marker of ankylosing spondylitis activity |
| title_full | Serum amyloid A as a marker of ankylosing spondylitis activity |
| title_fullStr | Serum amyloid A as a marker of ankylosing spondylitis activity |
| title_full_unstemmed | Serum amyloid A as a marker of ankylosing spondylitis activity |
| title_short | Serum amyloid A as a marker of ankylosing spondylitis activity |
| title_sort | serum amyloid a as a marker of ankylosing spondylitis activity |
| topic | ankylosing spondylitis hla-b27 saa crp esr secondary amyloidosis |
| url | https://mrj.ima-press.net/mrj/article/view/1230 |
| work_keys_str_mv | AT kvsakharova serumamyloidaasamarkerofankylosingspondylitisactivity AT mvcherkasova serumamyloidaasamarkerofankylosingspondylitisactivity AT shferdes serumamyloidaasamarkerofankylosingspondylitisactivity |