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Related Experiment Videos

Natural killer cell activity during measles.

D E Griffin1, B J Ward, E Jauregui

  • 1Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205.

Clinical and Experimental Immunology
|August 1, 1990
PubMed
Summary
This summary is machine-generated.

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Natural killer cell activity is significantly reduced during measles, impacting anti-viral defenses. This immune suppression persists for weeks, even with interleukin-2 treatment.

Area of Science:

  • Immunology
  • Virology
  • Cellular Biology

Background:

  • Natural killer (NK) cells are crucial for innate anti-viral immunity.
  • Measles infection is known to cause temporary immune suppression.
  • The specific impact of measles on NK cell activity requires further elucidation.

Purpose of the Study:

  • To quantify natural killer cell activity in individuals with acute measles.
  • To compare NK cell activity in measles patients with those having other infections and healthy controls.
  • To investigate the duration and potential modulators of reduced NK cell activity during measles.

Main Methods:

  • Measurement of natural killer cell activity using lytic units (LU)/10(7) cells.
  • Comparison of NK cell activity between measles patients, patients with other infections, and healthy adults and children.

Related Experiment Videos

  • Assessment of NK cell activity in measles patients with and without complications.
  • Evaluation of NK cell activity following in vitro exposure to interleukin-2.

    • Main Results:

    • Significantly reduced NK cell activity in measles patients (73 +/- 21 LU) compared to healthy adults (375 +/- 70 LU) and children (300 +/- 73 LU).
    • Lower NK cell activity was also observed in patients with other infectious diseases (149 +/- 95 LU).
    • Reduced NK cell activity persisted for at least 3 weeks post-rash onset in measles patients, irrespective of complications.
    • In vitro interleukin-2 stimulation partially restored NK cell activity.

    Conclusions:

    • Acute measles infection leads to a profound and sustained depression of natural killer cell activity.
    • This NK cell dysfunction parallels the broader immunosuppression observed during measles.
    • The findings highlight the vulnerability to secondary infections during measles due to impaired NK cell function.