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Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

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Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
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Related Experiment Video

Updated: May 2, 2026

Use of Interferon-γ Enzyme-linked Immunospot Assay to Characterize Novel T-cell Epitopes of Human Papillomavirus
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One Case of Abnormal Decrease of Interferon Gamma Release Assay Result Caused by Melphalan.

Gangfeng Li, Tao Lu, Ningping Shan

    Clinical Laboratory
    |September 11, 2024
    PubMed
    Summary
    This summary is machine-generated.

    Melphalan treatment for multiple myeloma can cause bone marrow suppression, leading to falsely negative results in interferon gamma release assays (IGRA). This highlights the need for careful interpretation of IGRA tests in patients undergoing such chemotherapy.

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    Area of Science:

    • Immunology
    • Oncology
    • Clinical Diagnostics

    Background:

    • Interferon gamma release assay (IGRA) is vital for diagnosing tuberculosis and latent infections.
    • Accurate IGRA results are essential for effective patient management.

    Observation:

    • A case of multiple myeloma treated with Melphalan exhibited myelosuppression.
    • This myelosuppression led to a significant reduction in peripheral blood lymphocytes.

    Findings:

    • The patient's IGRA results showed an abnormal decrease, suspected to be a false negative.
    • Melphalan-induced bone marrow suppression is implicated as the cause of reduced lymphocyte counts and suppressed IGRA.
    • Retesting confirmed the persistently low IGRA results.

    Implications:

    • Melphalan therapy can cause false-negative IGRA results in multiple myeloma patients.
    • Clinical laboratory staff must be aware of this potential interference.
    • Timely communication between laboratory and clinical teams is crucial for accurate diagnosis and treatment.