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Cytotoxic T Cells-mediated Immune Response

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...

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Anti-Nuclear Antibody Screening Using HEp-2 Cells

Anti-Nuclear Antibody Screening Using HEp-2 Cells

Published on: June 23, 2014

Historical Perspective on Antinuclear Antibody Testing.

Gyorgy Abel¹, M Qasim Ansari², Melissa R Snyder³

¹G. Abel, MD, Laboratory Medicine and Pathology, Lahey Hospital and Medical Center, Beth Israel Lahey Health, Burlington, Massachusetts.

The Journal of Rheumatology

|February 1, 2025

Summary

This summary is machine-generated.

Understanding the history and evolution of antinuclear antibody (ANA) testing is crucial for accurate diagnosis of autoimmune disorders. This review details various ANA testing methods, their pros and cons, and current practices to improve patient care.

Keywords:

antinuclear antibody autoantibodies autoimmunity biomarkers systemic autoimmune rheumatic disease systemic lupus erythematosus

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Area of Science:

Immunology
Clinical Chemistry

Background:

Antinuclear antibodies (ANAs) were discovered in the late 1950s, with standardized testing evolving since the 1980s.
The classic indirect immunofluorescence assay (IFA) and newer immunochemical techniques are used for ANA detection.

Observation:

ANA testing methods vary in sensitivity, specificity, and clinical performance, leading to confusion.
Complexity in interpreting ANA IFA patterns and diverse assay performances contribute to diagnostic challenges.

Findings:

This review presents a historical overview and contemporary analysis of ANA testing methodologies.
It highlights the advantages and disadvantages of each method and summarizes current ANA testing practices based on recent surveys.

Implications:

Understanding ANA testing methods' limitations is critical for optimal patient care.
Standardization efforts and new guidelines are expected to improve ANA testing practices and patient outcomes in autoimmune diseases.