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  • The stability of children's salivary peptidome profiles in response to short-term beverage consumption.

The stability of children's salivary peptidome profiles in response to short-term beverage consumption.

Clinica chimica acta; international journal of clinical chemistry (2020-06-13)
Fangqiao Wei, Xiangyu Sun, Peiyuan Tong, Yufeng Gao, Ce Zhu, Feng Chen, Shuguo Zheng
摘要

Salivary peptidome profiling analysis has advantages of simplicity and non-invasiveness and great potentiality for screening, monitoring or primary diagnosis of diseases, but may be subjected to change against interferences like diet. We conducted a 5-day study to investigate the influence of 3 kinds of beverages (orange juice, sugar-free tea, and sugar-free liquid yoghurt; water as control) on children's salivary peptidome using mass spectrometry techniques. All the groups shared a relatively stable pattern in heatmaps during the experimental days. Principal component analysis plot presented slight shifts in all the intervention groups between the baseline and intervention period while samples were not distinctly separated by date. The numbers of significantly changed peptides after short-term orange juice and tea intervention were four and three, respectively, while no changes occurred in the yoghurt group and control. Four of these peptides were identified as histatin-3, collagen alpha-1(IV) chain, zinc finger protein 805, and quinolinate synthase A. Salivary peptidome has its own stability against beverage intervention, confirming the feasibility and validity of using it as a potential reference for the healthy state of the body, with diet habits recorded and considered as a confounder if necessary.

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Sigma-Aldrich
ProteoMass ACTH 片段 18-39 MALDI-MS 标准品, vial of 10 nmol, monoisotopic mol wt 2,464.1989 Da
Sigma-Aldrich
胰岛素 来源于牛胰腺, vial of 10 nmol, monoisotopic mol wt 5,729.6087 Da
Sigma-Aldrich
ProteoMass P14R MALDI-MS Standard, vial of 10 nmol