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Bioactive components in the marsupial pouch and milk.

Manujaya W Jayamanna Mohottige1,2, Chloe E Gardner3, Mitchell G Nye-Wood1

  • 1School of Science, Edith Cowan University, Joondalup, WA, Australia.

Nutrition Research Reviews
|November 17, 2024
PubMed
Summary

Marsupial joeys depend on maternal protection via milk and pouch. This review details bioactive components in milk and pouches crucial for joey development and immunity.

Keywords:
S100 family proteinsantimicrobial peptidesimmune cellsimmunoglobulinslysozymeswhey proteins

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Area of Science:

  • Comparative immunology
  • Reproductive biology
  • Mammalian development

Background:

  • Marsupials have short gestation and immunologically naive young.
  • Joeys rely heavily on maternal care for survival and development.
  • Milk and pouch environments are critical for marsupial maternal protection.

Purpose of the Study:

  • To review bioactive components in marsupial milk and pouches.
  • To explore components contributing to maternal protection of joeys.
  • To identify research gaps in understanding marsupial maternal investment.

Main Methods:

  • Literature review of existing research on marsupial milk and pouch composition.
  • Analysis of bioactive components and their roles in joey development.
  • Investigation of plurifunctional components and their potential bioactivity.

Main Results:

  • Key bioactive components include immune cells, immunoglobulins, S100 proteins, lysozymes, whey proteins, antimicrobial peptides, and other immune proteins.
  • Potentially bioactive plurifunctional components identified are caseins, vitamins, minerals, oligosaccharides, lipids, and microRNAs.
  • Bioactive component concentrations vary with lactation stage to meet evolving joey immunological needs.

Conclusions:

  • Marsupial milk and pouch secretions provide essential bioactive factors for naive joey development.
  • Further research is needed to uncover novel components, their mechanisms, and systemic effects.
  • Understanding these maternal contributions is vital for marsupial conservation and comparative immunology.