Characteristics of salivary secretion in normal-weight, overweight and obese children: a preliminary study

Characteristics of salivary secretion in normal-weight, overweight and obese children: a preliminary study

Author Campos, Milene Mazuchi de Google Scholar
Kobayashi, Fernanda Yukie Google Scholar
Barbosa, Tais de Souza Google Scholar
Costa, Simone da Silva Google Scholar
Lucas, Barbara de Lima Google Scholar
Castelo, Paula Midori Autor UNIFESP Google Scholar
Institution Universidade Estadual de Campinas (UNICAMP)
Universidade Federal de São Paulo (UNIFESP)
Abstract Information on salivary characteristics of young subjects with different body composition is scarce. Thus, the aim of this pilot study was to assess salivary characteristics of normal-weight, overweight and obese children. This is a basic research design in which 68 children (5-12 years) were recruited and anthropometric measurements consisted of body mass index (BMI = Kg/m(2)), body perimeters (waist/arm circumferences) and subcutaneous fat tissue (triceps/subscapular thicknesses). Stimulated (SS) and unstimulated morning saliva (US) were collected to determine flow rate, pH and triglycerides, urea, alpha-amylase, total protein, phosphate and calcium concentrations. Data were analyzed using normality tests, t test/Wilcoxon, one-way ANOVA/Kruskal-Wallis and Pearson's/Spearman's correlation tests, where appropriate. Results: Age, household income, parents' education, saliva flow and pH did not differ among groups. Waist circumference and subscapular skinfold differed significantly between normal-weight and obese groups; only waist circumference showed significant correlation with BMI in all groups. pH increased significantly from US to SS in all groups; but flow rate increased from US to SS only in normal-weight and overweight groups. Total protein, amylase, urea, phosphate, triglyceride and calcium concentrations did not differ among groups. However, urea, phosphate and calcium concentrations differed significantly between US and SS in the normal-weight and overweight groups, with the lowest values for SS. in the overweight group, total protein also differed between saliva samples and obese group showed no difference in biochemical parameters between US and SS. Finally, some salivary characteristics may vary among normal-weight, overweight and obese children; thus, future studies in a larger sample are needed to fully understand salivary secretion and composition of these subjects.
Keywords Saliva
Biochemical markers
Body weights and measures
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Grant number FAPESP: 2011/05245-6
FAPESP: 2012/04492-2
Date 2014-07-01
Published in Odontology. New York: Springer, v. 102, n. 2, p. 318-324, 2014.
ISSN 1618-1247 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 318-324
Access rights Closed access
Type Article
Web of Science ID WOS:000340680000027

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