Related Experiment Videos
Cellular distribution of orally and intramuscularly administered iron dextran in newborn piglets
Insights
Iron dextran administered orally to piglets is absorbed via the small intestine and transported through the lymphatic system. Iron stores in the liver and spleen are utilized rapidly by growing piglets.
Area of Science:
- Animal Science
- Biochemistry
- Histology
Background:
- Iron dextran is commonly administered to newborn piglets to prevent anemia.
- Understanding iron absorption and distribution is crucial for optimizing neonatal piglet health.
Purpose of the Study:
- To investigate the absorption, distribution, and storage of iron dextran in newborn piglets following oral administration.
- To compare oral iron dextran administration with intramuscular injection.
Main Methods:
- Histochemical staining of tissues from piglets treated with iron dextran at different ages.
- Analysis of iron granule distribution in the small intestine, lymph nodes, liver, and spleen.
- Comparison of iron distribution following oral versus intramuscular iron dextran administration.
Main Results:
- Oral iron dextran was absorbed by small intestinal mucosal cells and transported via the lymphatic system.
- Iron granules were abundant in lymph nodes, liver, and spleen macrophages within the first week.
- Iron stores diminished significantly within weeks due to rapid utilization by growing piglets.
- Iron distribution after 7 days was comparable between oral and intramuscular iron dextran administration.
Conclusions:
- Oral iron dextran is effectively absorbed and distributed to key storage organs in newborn piglets.
- Lymphatic transport plays a significant role in iron dextran distribution.
- Rapid iron utilization in growing piglets leads to a decline in iron stores.
- Both oral and intramuscular routes result in similar iron distribution patterns by day 7.
Abstract:
Histochemical studies were performed on tissues from piglets of different ages treated orally with iron dextran soon after birth. The mucosal cells in the distal region of the small intestine were heavily laden with stainable iron granules during the first three days after the iron administration. The absorptive epithelial cells are desquamated within seven to ten days after birth. Consequently, the number of iron granules gradually diminishes during the first seven days after treatment and no iron granules are demonstrated 12 days after the administration of iron. The iron dextran complex is pinocytosed in newborn piglets and then transported via the lymphatic system. Thus the sinusoidal lining cells of the body and mesenteric lymph nodes are already heavily laden with iron granules 24 hours after oral treatment. This iron store is released only slowing during the first weeks of life. Great amounts of iron granules are demonstrated in the liver and spleen macrophages during the first week after the administration of iron. Due to the rapid utilization of iron in growing piglets these iron stores diminish sharply during the weeks following birth. The distribution of stainable iron in the lymph nodes, liver and spleen seven days after intramuscular injection of iron dextran in newborn piglets was comparable to that for oral administration at that stage of the experiment.