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Related Experiment Videos

A new specific method for measuring S-100B in serum.

T Stigbrand1, L Nyberg, A Ullén

  • 1Department of Immunology, University of Umeå, Sweden. Torgny.Stigbrand@climi.umu.se

The International Journal of Biological Markers
|April 14, 2000
PubMed
Summary
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A new assay accurately measures S-100B protein, crucial for detecting brain damage. This sensitive method aids in monitoring patients, particularly after open-heart surgery, revealing potential cerebral effects.

Area of Science:

  • Neuroscience
  • Biochemistry
  • Immunology

Background:

  • S-100B protein is involved in brain damage and melanoma.
  • It is released into cerebrospinal fluid and blood after injury.
  • Existing detection methods require improvement.

Purpose of the Study:

  • To develop a highly sensitive and reproducible assay for S-100B protein.
  • To validate the assay's specificity and working range.
  • To assess the clinical utility of the S-100B assay in monitoring patients.

Main Methods:

  • A novel two-step immunoassay using monoclonal antibodies (MAbs) was developed.
  • Real-time biospecific interaction analysis confirmed MAb specificity to S-100B.
  • Assay parameters including sensitivity, reproducibility, and cross-reactivity were rigorously tested.

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Main Results:

  • The assay demonstrated high specificity for S-100B, with a working range of 0.2-60 µg/L and CV < 10%.
  • Clinical studies confirmed the assay's high sensitivity.
  • Measurable S-100B levels were detected in patients after open-heart surgery, suggesting cerebral effects.

Conclusions:

  • A reproducible and sensitive S-100B immunoassay has been established.
  • The assay is suitable for detecting S-100B in clinical settings.
  • This test can be valuable for postoperative monitoring of patients, especially after cardiopulmonary bypass operations.