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Electrolyte concentrations in saliva of children aged 6-10 years with Down syndrome

Walter Luiz Siqueira1, Elisabeth de Oliveira, Zan Mustacchi

  • 1Oral Biology Research Center, Faculty of Dentistry, University of São Paulo, Ave. Prof. Lineu Prestes 2227, 05508-900 São Paulo, Brazil.

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
|July 10, 2004
PubMed

Insights

Children with Down syndrome (DS) exhibit altered salivary ion concentrations, with significantly higher sodium and lower potassium levels compared to healthy children. These findings suggest potential salivary gland dysfunction in DS.

Area of Science:

  • Biochemistry
  • Pediatric Dentistry
  • Genetics

Background:

  • Down syndrome (DS) is a genetic disorder associated with various health complications.
  • Salivary gland function can be affected in individuals with DS, impacting oral health.
  • Understanding electrolyte balance in saliva is crucial for assessing salivary gland function.

Purpose of the Study:

  • To compare salivary ion concentrations and flow rates between children with Down syndrome and healthy controls.
  • To investigate potential alterations in salivary gland metabolism in children with Down syndrome.

Main Methods:

  • Analyzed sodium, potassium, calcium, phosphorus, zinc, and magnesium ion concentrations in stimulated whole saliva.
  • Compared 22 children with Down syndrome (aged 6-10 years) to 21 healthy children.
  • Measured salivary pH and electrolyte concentrations using inductively coupled argon plasma atomic emission spectrometry.

Main Results:

  • No significant differences in phosphorus, zinc, magnesium, and calcium levels were found.
  • Children with Down syndrome showed a 66.8% higher sodium concentration in saliva.
  • Salivary flow rate and potassium concentration were lower in the Down syndrome group.

Conclusions:

  • Salivary ion concentration and flow rate are altered in children with Down syndrome.
  • Results suggest metabolic changes in the duct and/or acinar cells of salivary glands in Down syndrome.
  • Further research is warranted to explore the implications for oral health in this population.
Abstract

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