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[Electrolyte secretion in saliva].

R L Maringoni1, A S Trindade Júnior, A G Atta

  • 1Departamento de Ciências Fisiológicas, Faculdade de Odontologia de Bauru, Universidade de São Paulo.

Revista Paulista De Medicina
|November 1, 1991
PubMed
Summary

Salivary glands model hydroelectrolytic secretion, with primary saliva formed in acini and modified in ducts. Recent research refines understanding of electrolyte transport mechanisms in final saliva production.

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Area of Science:

  • Physiology
  • Cell Biology

Background:

  • Salivary glands offer a pure model for studying hydroelectrolytic secretion in epithelia lacking action potentials.
  • Salivary secretion involves two stages: acinar formation of primary saliva and ductal modification of electrolytes.

Purpose of the Study:

  • To review mechanisms of final saliva formation, departing from Thaysen's hypothesis.
  • To discuss the evolution of salivary secretion theories, including recent findings on ion transport.

Main Methods:

  • Review of existing hypotheses and recent research on salivary secretion.
  • Comparison of authors' findings with current literature.

Main Results:

  • Emphasis on ductal impermeability to water and a threshold for sodium transport.
  • Discussion of experimental possibilities for saliva with higher osmotic pressure than plasma.
  • Exploration of loop diuretics' effect on potassium transport.

Conclusions:

  • Salivary secretion mechanisms are complex, involving sophisticated electrolyte transport.
  • Recent research has significantly refined early theories on saliva formation.
  • Further investigation into ion transport and osmotic properties is warranted.

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