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Related Experiment Videos

Vitamin E toxicity in neonatal piglets

T W Hale1, K Rais-Bahrami, D L Montgomery

  • 1Texas Tech University School of Medicine, Texas A & M Veterinary Medical Diagnostic Laboratory, Amarillo.

Journal of Toxicology. Clinical Toxicology
|January 1, 1995
PubMed
Summary

Rapid intravenous vitamin E (E-Ferol) injections caused massive spleen accumulation in piglets, unlike slow infusions. This suggests a potential link between rapid vitamin E delivery and infant deaths.

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Area of Science:

  • Neonatal physiology
  • Pharmacokinetics
  • Toxicology

Background:

  • Intravenous vitamin E (E-Ferol) was linked to infant deaths in 1984.
  • The exact cause of these deaths remains unknown due to the preparation's composition (vitamin E and polysorbate detergent).

Purpose of the Study:

  • To investigate the tissue distribution of intravenous vitamin E (E-Ferol) in neonatal piglets.
  • To understand how different administration methods (rapid IV, slow IV, IM) affect vitamin E tissue accumulation.

Main Methods:

  • Neonatal piglets received daily injections of vitamin E (50 IU/kg/d) for 6-13 days.
  • Administration routes included rapid IV, slow 7-hour IV infusion, and intramuscular injection.
  • Tissue vitamin E levels were measured and compared to control groups.

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Main Results:

  • Rapid IV injection led to massive splenic accumulation of vitamin E (16,004 µg/g vs. 73 µg/g in controls).
  • Liver and lung showed lesser accumulation, while kidney and heart levels were slightly elevated.
  • Slow IV infusion resulted in higher liver accumulation compared to the spleen.
  • Intramuscular injections showed minimal changes in tissue vitamin E levels.

Conclusions:

  • Rapid IV vitamin E administration causes significant accumulation in the spleen, liver, and lungs, potentially impacting the mononuclear phagocyte system.
  • This accumulation may increase susceptibility to sepsis or cause abnormal pulmonary function.
  • Slow intravenous infusions alter vitamin E distribution, favoring liver accumulation over splenic accumulation.