The analysis of secondary AA-amyloidosis current etiology and its influence on the approaches for diagnosis and treatment
2021
Aim . To investigate an influence of the currently changed etiologic structure of AA-amyloidosis on the diagnosis and treatment tactics. Materials and methods . In 110 patients with АА-amyloidosis followed during full disease duration (1 month – 29 years) etiology, clinical manyfestations and approaches to diagnose and treatment of AA-amyloidosis were evaluated. With ELISA levels of amyloid precursor acute phase inflammation reactant SAA and neutrophil activity marker S100A12 were measured. Results . Among the most common causes of AA-amyloidosis at the present stage, in addition to RA (40.3%), a significant place is occupied by a group of diseases with a predominantly autoinflammatory mechanism (53.73%). To confirm the autoinflammatory mechanism of the predisposing disease it is recommended to study a highly sensitive parameter serum protein S100A12. An effective marker of the risk of AA-amyloidosis progression, especially in patients with subclinical activity of inflammatory disease, is a high level of production of amyloidogenic protein-a precursor of SAA.
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