Antinuclear antibodies. Basic concepts. Relationship with clinical manifestations

Authors

  • Marcelo Label Jose Maria Ramos Mejia General Acute Care Hospital, City of Buenos Aires, Argentina
  • Gabriela Bendjuia Jose Maria Ramos Mejia General Acute Care Hospital, City of Buenos Aires, Argentina
  • Sabrina Merenzon Jose Maria Ramos Mejia General Acute Care Hospital, City of Buenos Aires, Argentina
  • Andrés Label German Hospital, City of Buenos Aires, Argentina
  • Julián Reigosa Dra. Roquel Clinical Analysis Laboratory, specialized in immunological studies, Villa Martelli, Province of Buenos Aires, Argentina

DOI:

https://doi.org/10.47196/da.v30i3.2665

Keywords:

antinuclear antibodies, autoantibodies, autoimmune diseases

Abstract

The detection of autoantibodies in systemic autoimmune rheumatic diseases, known as collagenopathies, holds significant value in supporting clinical diagnosis and sometimes facilitates the identification and classification of subtypes. Ongoing research endeavors aim to explore the potential of using biomarkers from different diseases as predictors of clinical progression. These studies seek to integrate classic activation markers, such as complement component 3 (C3), with autoantibodies like anti-dsDNA or anti-Sm.

The indirect immunofluorescence technique on HEp-2 cells is the most commonly used for initial screening. It enables the detection of autoantibodies, provides insight into their quantity through titration, and sometimes the pattern allows us to infer the antigenic target, which should be confirmed with other techniques.

In this review, we describe the new taxonomy proposed by a group of experts in 2014, updated in September 2021, with an emphasis on clinical correlations and the significance of major anticellular antibodies. The purpose of this review is to convey current concepts, using diagrams and tables that may prove helpful to physicians in their practice.

Author Biographies

Marcelo Label, Jose Maria Ramos Mejia General Acute Care Hospital, City of Buenos Aires, Argentina

Dermatology Department

Gabriela Bendjuia, Jose Maria Ramos Mejia General Acute Care Hospital, City of Buenos Aires, Argentina

Dermatology Department

Sabrina Merenzon, Jose Maria Ramos Mejia General Acute Care Hospital, City of Buenos Aires, Argentina

Dermatology Department

Andrés Label, German Hospital, City of Buenos Aires, Argentina

Dermatology Service

Julián Reigosa, Dra. Roquel Clinical Analysis Laboratory, specialized in immunological studies, Villa Martelli, Province of Buenos Aires, Argentina

Biochemist

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Published

2024-10-21

Issue

Section

Continuing Medical Education