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Mammary physiology and milk secretion.
James L McManaman1, Margaret C Neville
1Department of Physiology, University of Colorado Health Sciences Center, Denver, CO 80262, USA. jim.mcmananman@uchsc.edu
Advanced Drug Delivery Reviews
|April 23, 2003
Summary
Understanding how toxic substances enter breast milk is crucial for infant health and breast cancer research. This review explores milk transport pathways and their regulation.
Area of Science:
- Biochemistry
- Toxicology
- Lactation Biology
Background:
- Milk composition is vital for infant nutrition and health.
- Toxic substances in milk pose risks to infants and may contribute to epigenetic changes linked to breast cancer.
- Mechanisms of toxicant transfer into milk and mammary tissue are poorly understood.
Purpose of the Study:
- To review current knowledge on normal solute transport and secretory processes in milk production.
- To discuss the potential regulatory mechanisms governing these transport processes.
- To highlight the importance of understanding these mechanisms for toxicology and drug development.
Main Methods:
- Review of existing literature on milk solute transport pathways.
- Analysis of transcellular and paracellular transport mechanisms.
- Discussion of hormonal, developmental, and physiological regulation of transport.
Main Results:
- Five general pathways for solute transport into milk exist: four transcellular and one paracellular.
- Solute transport involves diverse and complex processes regulated by multiple factors.
- Current understanding of the regulation and coordination of these mechanisms is limited.
Conclusions:
- Further research is needed to fully elucidate the regulation and coordination of solute transport mechanisms in milk production.
- Understanding these pathways is critical for assessing risks associated with drug and toxicant exposure via milk.
- This knowledge is essential for toxicologists and researchers in drug design and metabolism.