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Related Experiment Videos

Is injectable collagen truly safe?

E Takayama1, M Ikeda, S Tsuru

  • 1Department of Otolaryngology, National Defense Medical College, Saitama, Japan.

The Journal of Laryngology and Otology
|August 1, 1992
PubMed
Summary
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Injectable collagen and silicone implants rarely cause reactions, but combining them can increase immune response. This augmented antigenicity may trigger allergic reactions in patients previously unresponsive to individual implants.

Area of Science:

  • Immunology
  • Biomaterials Science

Background:

  • Injectable collagen and silicone are used as dermal fillers.
  • Most patients exhibit no clinical response to these implants.
  • Some patients show immunological but not clinical responses ('undersea' reactions).

Purpose of the Study:

  • To investigate the immunogenicity of combined collagen and silicone implants.
  • To determine if a combination of implants can elicit an immune response in non-responsive patients.

Main Methods:

  • Utilized the Macrophage migration inhibition test to assess immune response.
  • Employed a sequential immunization protocol using collagen followed by collagen with silicone.

Main Results:

  • The combination of collagen followed by collagen with silicone significantly augmented relative immunogenicity.

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  • This augmented antigenicity suggests a potential for allergic reactions.

    • Conclusions:

    • Sequential immunization with collagen and silicone can enhance immune responses.
    • This combined approach may induce allergic reactions in individuals unresponsive to single implants.