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  • Title: [Modern look at the problems of investigation of antinuclear antibodies in systemic lupus erythematosus (literature review).].
    Author: Aleksandrova EN, Verizhnikova ZG, Novikov AA, Lukina GV.
    Journal: Klin Lab Diagn; 2018; 63(6):340-348. PubMed ID: 30702224.
    Abstract:
    In the review, topical aspects of the study of antinuclear antibodies (ANA) in systemic lupus erythematosus (SLE) are considered. ANA is the main serological marker of SLE. In the sera of patients with SLE, antibodies to DNA, histones, nucleosomes, extractable nuclear antigens (Sm, U1 ribonucleoprotein, Ro / SSA, La / SSB, ribosomal protein P), nucleolar antigens and other cellular structures are detected. The ANA study using indirect immunofluorescence on HEp-2 cells (IIF-HEp-2) is recommended as a standard screening test for the diagnosis of SLE. The use of automated systems for the interpretation of cellular fluorescent tests contributes to the standardization and improvement of the reproducibility of the IIF. A new international nomenclature of types of nuclear, nucleolar (nucleolar), cytoplasmic and mitotic luminescence of ANA in IIF-HEp-2, including 28 variants of anticell ("Anti-cell" - AC) patterns was developed. In the practice of clinical diagnostic laboratories, high-performance automated methods for the determination of ANA based on ELISA, immunoblot, fluorescent, chemiluminescent and multiplex immunoassay are widely used. New mono- and multiplex methods of solid-phase analysis are expediently used as confirmatory reflex tests for the detection of varieties of antigen-specific ANA in patients with SLE with positive results of IIF-HEp-2. Identification of ANA profiles using multiplex technologies is a useful tool for implementing a personalized approach to diagnosis, evaluation of activity, prognosis, clinical and immunological subtypes, and the effectiveness of SLE therapy. The need for an ANA study not only to confirm the diagnosis of SLE, but also to identify the disease in the early and preclinical stages with the intention to prevent the development of the pathological process is discussed. Detection of monospecific anti-DFS70 antibodies allows to exclude the diagnosis of SLE inANA IIF-HEp-2 positive subjects. Presented is a modern algorithm for testing ANA with SLE.
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