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Cell-mediated immunity caused by beryllium compounds.

S Sakaguchi1, T Sakaguchi, I Nakamura

  • 1Department of Hygiene, St. Marianna University School of Medicine, Kanagawa, Japan.

Pharmacology & Toxicology
|November 1, 1987
PubMed
Summary
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Beryllium chloride (BeCl2) exposure sensitizes mice, inducing cell-mediated immunity. Passive transfer of spleen and lymph node cells from exposed mice elicited significant allergic reactions in recipients, demonstrating beryllium

Area of Science:

  • Immunology
  • Cellular immunology
  • Hypersensitivity

Background:

  • Beryllium compounds, such as beryllium chloride (BeCl2), are known to cause hypersensitivity reactions in susceptible individuals.
  • Understanding the mechanisms of beryllium sensitization is crucial for preventing and managing occupational beryllium disease.

Purpose of the Study:

  • To investigate the role of cell-mediated immunity in beryllium sensitization.
  • To determine if passive transfer of immune cells from beryllium-exposed mice can induce hypersensitivity in naive recipients.

Main Methods:

  • Spleen and lymph node cells were collected from mice exposed to BeCl2 for six weeks.
  • These cells were adoptively transferred intravenously into naive recipient mice.
  • Recipient mice were challenged with BeCl2 to assess immune responses, including footpad swelling, ear swelling, and peritoneal cell migration inhibition.

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Main Results:

  • Mice receiving cells from BeCl2-sensitized donors showed significant footpad and ear swelling upon BeCl2 challenge.
  • Peritoneal cell migration was inhibited in the presence of BeCl2 antigen in recipient mice.
  • These findings indicate a transfer of beryllium-specific cellular immunity.

Conclusions:

  • Beryllium sensitization involves both active and passive cell-mediated immune responses.
  • Adoptive transfer of immune cells can transfer beryllium-specific hypersensitivity.
  • Cell-mediated immunity plays a critical role in the pathogenesis of beryllium-induced allergic reactions.