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Related Experiment Videos

Oestrogen binding sites in fresh human aortic tissue.

D Campisi1, A Bivona, S Paterna

  • 1Instituto di Clinica Medica Generale e Terapia Medica I, University of Palermo, Italy.

International Journal of Tissue Reactions
|January 1, 1987
PubMed
Summary

This study found estrogen receptors in human blood vessels. These receptors, present in both cytoplasmic and nuclear fractions of aortic tissue, indicate a potential role for estrogen in cardiovascular health.

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Area of Science:

  • Cardiovascular Science
  • Endocrinology
  • Molecular Biology

Background:

  • Estrogen's role in cardiovascular health is increasingly recognized.
  • The presence and function of estrogen receptors in vascular tissue require further elucidation.

Purpose of the Study:

  • To investigate the presence and characteristics of estrogen binding sites in human aortic tissue.
  • To quantify estrogen receptors in different cellular compartments of the aorta.

Main Methods:

  • Aortic tissue biopsies were collected from patients undergoing heart surgery.
  • Estrogen binding sites were measured using a dextran-coated charcoal method.
  • Receptor quantification in cytoplasmic and nuclear fractions was performed using Scatchard plot analyses.

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Main Results:

  • Estrogen receptors were detected in 8 out of 13 cytosol fractions and 10 out of 13 nuclear fractions.
  • High-affinity binding was observed, with dissociation constants (Kd) ranging from 10(-11) M to 10(-10) M.
  • Positive results indicate the presence of estrogen receptors in human blood vessels.

Conclusions:

  • Human aortic tissue possesses estrogen receptors.
  • These findings suggest a direct vascular effect of estrogen, potentially influencing cardiovascular function.
  • Further research is warranted to explore the physiological implications of estrogen receptors in the vasculature.