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Related Experiment Videos

Circulating growth hormone binding proteins

R G Rosenfeld1

  • 1Department of Pediatrics, Doernbecher Memorial Hospital for Children, Oregon Health Sciences University, Portland 97201.

Hormone Research
|January 1, 1994
PubMed
Summary

High-affinity growth hormone binding protein (GHBP) reflects growth hormone receptor levels. Measuring GHBP in serum offers insights into GH receptor concentration and binding affinity.

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Area of Science:

  • Endocrinology
  • Molecular Biology
  • Biochemistry

Background:

  • The high-affinity growth hormone binding protein (GHBP) is biologically linked to the growth hormone receptor (GHR).
  • GHBP is generated through different mechanisms in humans (proteolytic cleavage) versus rodents (alternative mRNA splicing).

Purpose of the Study:

  • To elucidate the relationship between GHBP and GHR.
  • To establish GHBP as a measurable indicator of GHR status.

Main Methods:

  • Analysis of GHBP and GHR expression and production pathways.
  • Measurement of serum GHBP concentrations.

Main Results:

  • GHBP represents the extracellular domain of the membrane-bound GHR.
  • Serum GHBP levels correlate with GHR concentration and/or affinity.

Conclusions:

  • Serum GHBP measurement is a viable method to assess GHR status.
  • Understanding GHBP production mechanisms is crucial for interpreting GHR levels.

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