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Neonatal erythropoiesis. I. Peripheral blood erythropoietic parameters: data suggest erythropoietin transfer via

R D Carmichael1, J LoBue, A S Gordon

  • 1Department of Biology, Morgan State University, Baltimore, Maryland 21239.

Endocrine Regulations
|June 1, 1992
PubMed

Insights

Neonatal rats nursing from anemic mothers showed stimulated erythropoiesis (red blood cell production). This suggests erythropoietin (Ep) in maternal milk enhances red blood cell development in pups.

Area of Science:

  • Physiology
  • Hematology
  • Neonatal Development

Background:

  • Erythropoiesis is crucial for oxygen transport.
  • Maternal factors can influence neonatal development.
  • The role of milk-borne erythropoietin (Ep) in neonatal rats was previously unclear.

Purpose of the Study:

  • To investigate the effect of maternal anemia on erythropoiesis in neonatal rats.
  • To determine if erythropoietin (Ep) is transmitted via maternal milk and stimulates neonatal erythropoiesis.

Main Methods:

  • Examined peripheral blood erythropoietic parameters in 9-12-day-old neonatal rats.
  • Compared pups from experimentally-induced anemic mothers versus control mothers.
  • Analyzed hematocrit, hemoglobin, red blood cell indices, and reticulocyte maturation.

Main Results:

  • Neonatal rats nursing from anemic mothers exhibited increased hematocrit, hemoglobin, and red blood cell indices.
  • Reticulocyte maturation curves were shifted leftward, indicating accelerated maturation.
  • Reticulocyte counts did not increase, possibly due to rapid maturation.

Conclusions:

  • Erythropoietin (Ep) is likely transmitted to suckling rats through maternal milk.
  • Milk-borne Ep stimulates erythropoiesis in neonatal rats, bypassing gastrointestinal inactivation.
  • A significant maternal-neonatal erythropoietic relationship exists in rats.

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