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Related Experiment Videos

New phosphate binding agents: ferric compounds.

C H Hsu1, S R Patel, E W Young

  • 1Department of Internal Medicine, University of Michigan Medical School, VA Medical Center, Ann Arbor, USA. hsuc@umich.edu

Journal of the American Society of Nephrology : JASN
|June 11, 1999
PubMed
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Ferric compounds effectively reduce dietary phosphate absorption in rats, showing promise for treating phosphate retention in kidney failure patients. These iron salts bind phosphate in the gut, lowering levels.

Area of Science:

  • Nephrology
  • Gastroenterology
  • Biochemistry

Background:

  • Dietary phosphate binding agents are crucial for managing hyperphosphatemia.
  • Ferric compounds have demonstrated potential for phosphate binding.
  • Understanding the impact of ferric compounds on intestinal phosphate absorption is essential.

Purpose of the Study:

  • To evaluate the efficacy of various ferric compounds in binding intestinal phosphate.
  • To determine the effect of ferric compounds on phosphate absorption in normal and azotemic rats.
  • To assess the clinical potential of ferric salts as phosphate binders.

Main Methods:

  • Balance studies were conducted in normal and azotemic rats over 2-4 weeks.
  • Rats were fed a phosphorus-rich diet supplemented with different ferric salts or a control.

Related Experiment Videos

  • Net intestinal phosphate absorption and excretion were measured.

    • Main Results:

    • Ferric compounds significantly reduced net intestinal phosphate absorption in both normal and azotemic rats.
    • Ferric chloride showed the greatest reduction in phosphate absorption.
    • Urinary phosphate excretion decreased, and trends toward lower serum phosphorus and parathyroid hormone were observed in azotemic rats.

    Conclusions:

    • Ferric salts effectively decrease net intestinal phosphate absorption.
    • Ferric compounds exhibit significant phosphate binding capacity, comparable to existing agents.
    • These findings suggest ferric salts hold promise for treating phosphate retention in renal failure.