W J Rody, L M Shaddox, K Olli, A Martinez-Porras, T J Garrett, J G Cagmat, L S Holliday
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Metabolites From Salivary Exosomes as Potential Biomarkers for Alveolar Bone and Tooth Resorption.
Objective(s): In this pilot study, exosomes from saliva were isolated and tested for the presence of metabolomic biomarkers for physiological external root resorption and/or pathological alveolar bone resorption.
Settings and sample population: Saliva samples of 20 individuals in the mixed dentition stage of dental development.
Materials and methods: Saliva was obtained from healthy control children with resorbing primary teeth or children with localised aggressive periodontitis (LAP) showing alveolar bone loss but little root resorption. Exosomes were isolated by differential centrifugation and analysed by electron microscopy, nanoparticle tracking analysis (NTA) and enzyme-linked immunosorbent assay (ELISA). Subsequently, exosomes were subjected to mass spectrometry to identify and quantitate metabolites. Differences between groups were statistically determined.
Results: Over 2000 metabolites were detected in salivary exosomes. Metabolites that differed significantly between exosomes from the saliva of LAP patients and controls included L-pipecolic acid, acetylcholine, creatinine, N-acetylneuraminate and numerous unidentified molecules.
Conclusion: This pilot study provided a proof-in-principle for using metabolites from salivary exosomes as biomarkers.
期刊介绍：
Orthodontics & Craniofacial Research - Genes, Growth and Development is published to serve its readers as an international forum for the presentation and critical discussion of issues pertinent to the advancement of the specialty of orthodontics and the evidence-based knowledge of craniofacial growth and development. This forum is based on scientifically supported information, but also includes minority and conflicting opinions.
The objective of the journal is to facilitate effective communication between the research community and practicing clinicians. Original papers of high scientific quality that report the findings of clinical trials, clinical epidemiology, and novel therapeutic or diagnostic approaches are appropriate submissions. Similarly, we welcome papers in genetics, developmental biology, syndromology, surgery, speech and hearing, and other biomedical disciplines related to clinical orthodontics and normal and abnormal craniofacial growth and development. In addition to original and basic research, the journal publishes concise reviews, case reports of substantial value, invited essays, letters, and announcements.
The journal is published quarterly. The review of submitted papers will be coordinated by the editor and members of the editorial board. It is policy to review manuscripts within 3 to 4 weeks of receipt and to publish within 3 to 6 months of acceptance.
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