A Study of the Variation in the Salivary Peptide Profiles of Young Healthy Adults Acquired Using MALDI-TOF MS

Andrei Prodan, Henk Brand, Sultan Imangaliyev, Evgeni Tsivtsivadze, Fridus van der Weijden, Ad de Jong, Armand Paauw, Wim Crielaard, Bart Keijser and Enno Veerman

PLOS ONE, 2016, vol. 11, issue 6, 1-15

Abstract: A cross-sectional observational study was conducted to evaluate the inter-individual variation in the MALDI-TOF MS peptide profiles of unstimulated whole saliva in a population of 268 systemically healthy adults aged 18–30 yr (150 males and 118 females) with no apparent caries lesions or periodontal disease. Using Spectral Clustering, four subgroups of individuals were identified within the study population. These subgroups were delimited by the pattern of variation in 9 peaks detected in the 2–15 kDa m/z range. An Unsupervised Feature Selection algorithm showed that P-C peptide, a 44 residue-long salivary acidic proline-rich protein, and three of its fragments (Fr. 1–25, Fr. 15–35 and Fr. 15–44) play a central role in delimiting the subgroups. Significant differences were found in the salivary biochemistry of the subgroups with regard to lysozyme and chitinase, two enzymes that are part of the salivary innate defense system (p

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0156707

DOI: 10.1371/journal.pone.0156707

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