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Musalem-Dominguez O, Montiel-Company JM, Ausina-Márquez V, Morales-Tatay JM, Almerich-Silla JM. Salivary metabolomic profile associated with cariogenic risk in children. J Dent 2023; 136:104645. [PMID: 37524196 DOI: 10.1016/j.jdent.2023.104645] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/02/2023] Open
Abstract
OBJECTIVES To identify the metabolomic differences in the saliva of healthy children versus children with active carious lesions and to estimate the predictive capacity of a model based on the salivary metabolomic profile. METHODS A study of cases (n = 31) and controls (n = 37) was designed for children aged between 6 and 12 (mean age of the cases: 8.9; controls: 8.7). The said children attended public health centers in Valencia, Spain. Intraoral examinations were performed by a single examiner using ICDAS II diagnostic criteria. Unstimulated total saliva samples were analyzed by nuclear magnetic resonance (NMR) spectroscopy. RESULTS The dft index for cases was 2.84 while it was 0.19 for the control group, the DMFT index was 1.13 and 0.11, respectively. The predictive model generated by the multivariate PLS-DA analysis projects a separation between the cases and the controls on the score chart with a predictive capacity and generating an area under the curve of 0.71. The metabolites: 3-methyl-2-oxovalerate, 3-hydroxybutyrate, lactate, acetone, citrate, ornithine, ethanolamine, taurine, proline, glycine, mannose, glucose, 1-6-Anhydro-β-d-glucose and citraconate, are those that show greater significance in the model. In the controls, glycine (Cohen's d = 0.430) and glucose (Cohen's d = 0.560) present higher means compared to the cases. On the contrary, taurine (Cohen's d= -0.474) and mannose (Cohen's d= -0.456) show higher means in cases compared to controls. CONCLUSIONS Our findings show a difference in the salivary metabolomic profiles, specifically in the groups of saccharides and amino acids, suggesting an association of these with the level of caries risk. CLINICAL SIGNIFICANCE The results reported in the present study reinforce the use of salivary metabolomics as a research method for the search for salivary biomarkers that allow the evaluation of caries risk in patients. Furthermore, it brings us closer to a personalized medicine that will help in dental caries prevention strategies.
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Affiliation(s)
- Oscar Musalem-Dominguez
- Departament d`Estomatologia, Facultat de Medicina i Odontologia, Universitat de Valencia, Gascó Oliag, 1, Valencia 46010, Spain
| | - José María Montiel-Company
- Departament d`Estomatologia, Facultat de Medicina i Odontologia, Universitat de Valencia, Gascó Oliag, 1, Valencia 46010, Spain.
| | - Verónica Ausina-Márquez
- Department of Dentistry, European University of Valencia, Passeig de l'Albereda, 7, Valencia 46010, Spain
| | - José Manuel Morales-Tatay
- Department of Pathology, Medicine and Odontology Faculty, University of Valencia, Valencia 46010, Spain; Research Unit, INCLIVA Health Research Institute, Valencia 46010, Spain
| | - José Manuel Almerich-Silla
- Departament d`Estomatologia, Facultat de Medicina i Odontologia, Universitat de Valencia, Gascó Oliag, 1, Valencia 46010, Spain
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Costa dos Santos Junior G, Pereira CM, Kelly da Silva Fidalgo T, Valente AP. Saliva NMR-Based Metabolomics in the War Against COVID-19. Anal Chem 2020; 92:15688-15692. [PMID: 33215503 PMCID: PMC7688045 DOI: 10.1021/acs.analchem.0c04679] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/10/2020] [Indexed: 12/15/2022]
Abstract
COVID-19 is an emergent, worldwide public health concern. Joint efforts have been made by scientific communities of various fields to better understand the mechanisms of action of SARS-CoV-2. The need to understand the pathophysiological fingerprint and pathways of this disease make metabolomics-related approaches an indispensable tool for properly answering concerns relating to disease course. Determination of the metabolomic profile may help to explain the heterogeneous spectra of COVID-19 clinical phenotypes and be useful in monitoring disease progression as well as therapeutic treatments. In this sense, saliva has proven to be a strategic biofluid, owing not only to its appeal as a noninvasive sampling method but also due to the capacity of the virus to invade epithelial cells of the oral mucosa and salivary gland ducts via ACE2 receptors. Accordingly, important changes in metabolism have been described relating to COVID-19, indicating that metabolomics may open new avenues for understanding the pathophysiology of this disease, especially via longitudinal study designs. Thus, we discuss the importance of comprehending the SARS-CoV-2 salivary metabolomic fingerprint and also highlight the situation of Brazil on the frontlines of the war against COVID-19.
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Affiliation(s)
- Gilson Costa dos Santos Junior
- Laboratory of NMR Metabolomics, IBRAG, Department of
Genetics, State University of Rio de Janeiro, Boulevard 28 de
Setembro 77 fds, Vila Isabel, RJ, 20551-030 Rio de Janeiro,
Brazil
| | - Claudia Maria Pereira
- Postgraduate Program in Translational Biomedicine,
Grande Rio University, Rua Professor José de Souza
Herdy, 1160, Jardim Vinte e Cinco de Agosto, 25071-202 Duque de Caxias,
Brazil
| | - Tatiana Kelly da Silva Fidalgo
- Dental School, Department of Preventive and Community
Dentistry, State University of Rio de Janeiro, Boulevard 28 de
Setembro, 157, Vila Isabel, 20551-030 Rio de Janeiro, Brazil
| | - Ana Paula Valente
- BioNMR, CENABIO I, Department of Structural Biology,
Federal University of Rio de Janeiro, Av. Carlos Chagas
Filho, 373, CCS/bloco K-anexo, 21941-599 Rio de Janeiro, Brazil
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Gardner A, Carpenter G, So PW. Salivary Metabolomics: From Diagnostic Biomarker Discovery to Investigating Biological Function. Metabolites 2020; 10:E47. [PMID: 31991929 PMCID: PMC7073850 DOI: 10.3390/metabo10020047] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/15/2020] [Accepted: 01/24/2020] [Indexed: 12/12/2022] Open
Abstract
Metabolomic profiling of biofluids, e.g., urine, plasma, has generated vast and ever-increasing amounts of knowledge over the last few decades. Paradoxically, metabolomic analysis of saliva, the most readily-available human biofluid, has lagged. This review explores the history of saliva-based metabolomics and summarizes current knowledge of salivary metabolomics. Current applications of salivary metabolomics have largely focused on diagnostic biomarker discovery and the diagnostic value of the current literature base is explored. There is also a small, albeit promising, literature base concerning the use of salivary metabolomics in monitoring athletic performance. Functional roles of salivary metabolites remain largely unexplored. Areas of emerging knowledge include the role of oral host-microbiome interactions in shaping the salivary metabolite profile and the potential roles of salivary metabolites in oral physiology, e.g., in taste perception. Discussion of future research directions describes the need to begin acquiring a greater knowledge of the function of salivary metabolites, a current research direction in the field of the gut metabolome. The role of saliva as an easily obtainable, information-rich fluid that could complement other gastrointestinal fluids in the exploration of the gut metabolome is emphasized.
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Affiliation(s)
- Alexander Gardner
- Salivary Research, Centre for Host–Microbiome Interactions, Faculty of Dental, Oral & Craniofacial Sciences, King’s College London, London SE1 9RT, UK; (A.G.); (G.C.)
- Department of Restorative Dentistry, Dental Hospital and School, University of Dundee, Dundee DD1 4HR, UK
| | - Guy Carpenter
- Salivary Research, Centre for Host–Microbiome Interactions, Faculty of Dental, Oral & Craniofacial Sciences, King’s College London, London SE1 9RT, UK; (A.G.); (G.C.)
| | - Po-Wah So
- Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Maurice Wohl Clinical Neuroscience Institute, London SE5 9RT, UK
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Sadler MJ, Gibson S, Whelan K, Ha MA, Lovegrove J, Higgs J. Dried fruit and public health - what does the evidence tell us? Int J Food Sci Nutr 2019; 70:675-687. [PMID: 30810423 DOI: 10.1080/09637486.2019.1568398] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A scientific workshop held in the UK explored the potential contribution of traditional dried fruits to public health, identified gaps in the evidence and addressed priorities for research. Presentations considered the categorisation and composition of dried fruits; dried fruit and gastrointestinal health; the polyphenol content of dried fruits and their potential contribution to health; dried fruit and appetite in relation to the psychology of snacking and obesity; dried fruit and dental health including its role as a snack; and conflicts in public health advice for dried fruits. A round table discussion explored the contribution of dried fruit to "five a day" fruit and vegetable intake and fibre intake, whether dried fruits have equivalence with fresh in terms of dietary advice, advice on snacking in relation to dental health and appetite control, informing the public about different types of dried fruits and avoiding consumer confusion, and future research requirements.
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Affiliation(s)
| | | | - Kevin Whelan
- c Department of Nutritional Sciences , King's College London , London , UK
| | | | - Julie Lovegrove
- e Hugh Sinclair Unit of Human Nutrition , University of Reading , Reading , UK
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Park YD, Jang JH, Oh YJ, Kwon HJ. Analyses of organic acids and inorganic anions and their relationship in human saliva before and after glucose intake. Arch Oral Biol 2014; 59:1-11. [DOI: 10.1016/j.archoralbio.2013.10.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/04/2013] [Accepted: 10/15/2013] [Indexed: 10/26/2022]
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Ruxton CHS, Gardner EJ, McNulty HM. Is sugar consumption detrimental to health? A review of the evidence 1995-2006. Crit Rev Food Sci Nutr 2010; 50:1-19. [PMID: 20047137 DOI: 10.1080/10408390802248569] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Many countries set quantitative targets for added sugars, justifying this by expressing concern about the likely impact of sugar on weight control, dental health, diet quality, or metabolic syndrome. This review considers whether current intakes of sugar are harmful to health, and analyses recent literature using a systematic approach to collate, rank, and evaluate published studies from 1995-2006. Results from high quality obesity studies did not suggest a positive association between body mass index and sugar intake. Some studies, specifically on sweetened beverages, highlighted a potential concern in relation to obesity risk, although these were limited by important methodological issues. Diet adequacy appeared to be achieved across sugar intakes of 6 to 20% energy, depending on subject age. Studies on metabolic syndrome reported no adverse effects of sugar in the long-term, even at intakes of 40-50% energy. The evidence for colorectal cancer suggested an association with sugar, but this appeared to have been confounded by energy intake and glycemic load. There was no credible evidence linking sugar with attention-deficit, dementia, or depression. Regarding dental caries, combinations of sugar amount/frequency, fluoride exposure, and food adhesiveness were more reliable predictors of caries risk than the amount of sugar alone. Overall, the available evidence did not support a single quantitative sugar guideline covering all health issues.
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Affiliation(s)
- C H S Ruxton
- Nutrition Communications, Front Lebanon, Cupar KY15 4EA, UK.
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Silwood CJL, Lynch E, Claxson AWD, Grootveld MC. 1H and (13)C NMR spectroscopic analysis of human saliva. J Dent Res 2002; 81:422-7. [PMID: 12097436 DOI: 10.1177/154405910208100613] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We have explored the ability of high-resolution NMR techniques to (1) index salivary biomolecules and (2) provide valuable data regarding intra- and inter-subject variability in the concentrations of a series of components readily determinable by this technique (organic acids and malodorous amines). Experiments were conducted on 'whole' saliva samples collected from 20 patients, either randomly during their daily activities, or, for investigations involving the quantification of salivary biomolecules, immediately after they woke in the morning throughout a three-day period. These NMR techniques permitted us to detect greater than 60 metabolites, together with agents arising from dietary, oral health care product, and pharmaceutical sources. Highly significant "between-subject" differences in the a.m. waking salivary metabolite concentrations were found for 9 out of 11 components monitored. It is concluded that NMR spectroscopy serves as a powerful technique for the multicomponent analysis of human saliva.
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Affiliation(s)
- C J L Silwood
- Medical Unit, St. Bartholomews and the Royal London School of Medicine and Dentistry, London E1 1BB, UK
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Autio K, Vesterinen E, Stolt M. Rheological properties of mixed starch-κ-carrageenan gels in relation to enzymatic digestibility. Food Hydrocoll 2002. [DOI: 10.1016/s0268-005x(01)00074-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Dental caries has a multifactorial aetiology in which there is an interplay of three principal factors: the host (saliva and teeth), the microflora (plaque), and the substrate (diet), and a fourth factor: time. There is no single test that takes into consideration all these factors and can accurately predict an individual's susceptibility to caries. The risk of dental caries can be evaluated by analysing and integrating several causative factors. These include caries experience (initial caries lesions and established caries defects, secondary caries and present caries activity), fluoride use, extent of plaque present, diet, bacterial and salivary activity and social and behavioural factors.
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Affiliation(s)
- E Reich
- University of Saarland, Department of Periodontology and Conservative Dentistry, Homburg, Germany.
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