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Gomes LHF, Marques AB, Dias ICDM, Gabeira SCDO, Barcelos TR, Guimarães MDO, Ferreira IR, Guida LC, Lucena SL, Rocha AD. Validation of Gene Expression Patterns for Oral Feeding Readiness: Transcriptional Analysis of Set of Genes in Neonatal Salivary Samples. Genes (Basel) 2024; 15:936. [PMID: 39062715 DOI: 10.3390/genes15070936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/04/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND Neonatal health assessment is crucial for detecting and intervening in various disorders. Traditional gene expression analysis methods often require invasive procedures during sample collection, which may not be feasible or ideal for preterm infants. In recent years, saliva has emerged as a promising noninvasive biofluid for assessing gene expression. Another trend that has been growing is the use of "omics" technologies such as transcriptomics in the analysis of gene expression. The costs for carrying out these analyses and the difficulty of analysis make the detection of candidate genes necessary. These genes act as biomarkers for the maturation stages of the oral feeding issue. METHODOLOGY Salivary samples (n = 225) were prospectively collected from 45 preterm (<34 gestational age) infants from five predefined feeding stages and submitted to RT-qPCR. A better description of the targeted genes and results from RT-qPCR analyses were included. The six genes previously identified as predictive of feeding success were tested. The genes are AMPK, FOXP2, WNT3, NPHP4, NPY2R, and PLXNA1, along with two reference genes: GAPDH and 18S. RT-qPCR amplification enabled the analysis of the gene expression of AMPK, FOXP2, WNT3, NPHP4, NPY2R, and PLXNA1 in neonatal saliva. Expression results were correlated with the feeding status during sample collection. CONCLUSIONS In summary, the genes AMPK, FOXP2, WNT3, NPHP4, NPY2R, and PLXNA1 play critical roles in regulating oral feeding and the development of premature infants. Understanding the influence of these genes can provide valuable insights for improving nutritional care and support the development of these vulnerable babies. Evidence suggests that saliva-based gene expression analysis in newborns holds great promise for early detection and monitoring of disease and understanding developmental processes. More research and standardization of protocols are needed to fully explore the potential of saliva as a noninvasive biomarker in neonatal care.
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Affiliation(s)
- Leonardo Henrique Ferreira Gomes
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Andressa Brito Marques
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Isabel Cristina de Meireles Dias
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Sanny Cerqueira de O Gabeira
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Tamara Rosa Barcelos
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Mariana de Oliveira Guimarães
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Igor Ribeiro Ferreira
- Rural and Remote Support Services, Department of Health, Integrated Cardiovascular Clinical Network SA, Adelaide, SA 5042, Australia
| | - Letícia Cunha Guida
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Sabrina Lopes Lucena
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
| | - Adriana Duarte Rocha
- Instituto Nacional da Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira-Fundação Oswaldo Cruz, Rio de Janeiro 22250-020, Brazil
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2
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Tyrkalska SD, Pérez-Sanz F, Franco-Martínez L, Rubio CP, Tvarijonaviciute A, Martínez-Subiela S, Méndez-Hernández M, González-Aumatell A, Carreras-Abad C, Domènech-Marçal È, Cerón JJ, Cayuela ML, Mulero V, Candel S. Salivary biomarkers as pioneering indicators for diagnosis and severity stratification of pediatric long COVID. Front Cell Infect Microbiol 2024; 14:1396263. [PMID: 38881733 PMCID: PMC11176444 DOI: 10.3389/fcimb.2024.1396263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/13/2024] [Indexed: 06/18/2024] Open
Abstract
Introduction Long COVID, or post-acute sequelae of SARS-CoV-2 infection (PASC), manifests as persistent and often debilitating symptoms enduring well beyond the initial COVID-19 infection. This disease is especially worrying in children since it can seriously alter their development. Presently, a specific diagnostic test or definitive biomarker set for confirming long COVID is lacking, relying instead on the protracted presence of symptoms post-acute infection. Methods We measured the levels of 13 biomarkers in 105 saliva samples (49 from children with long COVID and 56 controls), and the Pearson correlation coefficient was used to analyse the correlations between the levels of the different salivary biomarkers. Multivariate logistic regression analyses were performed to determine which of the 13 analysed salivary biomarkers were useful to discriminate between children with long COVID and controls, as well as between children with mild and severe long COVID symptoms. Results Pediatric long COVID exhibited increased oxidant biomarkers and decreased antioxidant, immune response, and stress-related biomarkers. Correlation analyses unveiled distinct patterns between biomarkers in long COVID and controls. Notably, a multivariate logistic regression pinpointed TOS, ADA2, total proteins, and AOPP as pivotal variables, culminating in a remarkably accurate predictive model distinguishing long COVID from controls. Furthermore, total proteins and ADA1 were instrumental in discerning between mild and severe long COVID symptoms. Discussion This research sheds light on the potential clinical utility of salivary biomarkers in diagnosing and categorizing the severity of pediatric long COVID. It also lays the groundwork for future investigations aimed at unravelling the prognostic value of these biomarkers in predicting the trajectory of long COVID in affected individuals.
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Affiliation(s)
- Sylwia D Tyrkalska
- Grupo de Inmunidad, Inflamación y Cáncer, Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Fernando Pérez-Sanz
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
| | - Lorena Franco-Martínez
- Laboratorio Interdisciplinar de Análisis Clínicos, Facultad de Veterinaria, Universidad de Murcia (Interlab-UMU), Murcia, Spain
| | - Camila P Rubio
- Laboratorio Interdisciplinar de Análisis Clínicos, Facultad de Veterinaria, Universidad de Murcia (Interlab-UMU), Murcia, Spain
| | - Asta Tvarijonaviciute
- Laboratorio Interdisciplinar de Análisis Clínicos, Facultad de Veterinaria, Universidad de Murcia (Interlab-UMU), Murcia, Spain
| | - Silvia Martínez-Subiela
- Laboratorio Interdisciplinar de Análisis Clínicos, Facultad de Veterinaria, Universidad de Murcia (Interlab-UMU), Murcia, Spain
| | - María Méndez-Hernández
- Unidad de Covid Persistente Pediátrico. Servicio de Pediatría, Hospital Universitario Germans Trias i Pujol, Badalona, Spain
- Departamento de Pediatría, Obstetricia y Ginecología, Medicina Preventiva y Salud Pública, Facultad de Medicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Alba González-Aumatell
- Unidad de Covid Persistente Pediátrico. Servicio de Pediatría, Hospital Universitario Germans Trias i Pujol, Badalona, Spain
- Departamento de Pediatría, Obstetricia y Ginecología, Medicina Preventiva y Salud Pública, Facultad de Medicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Clara Carreras-Abad
- Unidad de Covid Persistente Pediátrico. Servicio de Pediatría, Hospital Universitario Germans Trias i Pujol, Badalona, Spain
- Departamento de Pediatría, Obstetricia y Ginecología, Medicina Preventiva y Salud Pública, Facultad de Medicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Èlia Domènech-Marçal
- Unidad de Covid Persistente Pediátrico. Servicio de Pediatría, Hospital Universitario Germans Trias i Pujol, Badalona, Spain
- Departamento de Pediatría, Obstetricia y Ginecología, Medicina Preventiva y Salud Pública, Facultad de Medicina, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - José J Cerón
- Laboratorio Interdisciplinar de Análisis Clínicos, Facultad de Veterinaria, Universidad de Murcia (Interlab-UMU), Murcia, Spain
| | - María L Cayuela
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Grupo de Telomerasa, Cáncer y Envejecimiento, Servicio de Cirugía, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Victoriano Mulero
- Grupo de Inmunidad, Inflamación y Cáncer, Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Sergio Candel
- Grupo de Inmunidad, Inflamación y Cáncer, Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Murcia, Spain
- Instituto Murciano de Investigación Biosanitaria (IMIB)-Pascual Parrilla, Murcia, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
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Bedi GN, Acharya S, Kumar S, Mapari SA. Salivary High-Sensitivity C-Reactive Protein and Its Clinical Relevance in Modern Medicine: A Comprehensive Review. Cureus 2024; 16:e58165. [PMID: 38741881 PMCID: PMC11089337 DOI: 10.7759/cureus.58165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 04/13/2024] [Indexed: 05/16/2024] Open
Abstract
High-sensitivity C-reactive protein (hsCRP) has emerged as a critical biomarker in inflammation, offering insights into various chronic diseases. However, traditional blood-based assays for hsCRP measurement pose limitations regarding invasiveness and cost. In recent years, saliva has garnered attention as an alternative diagnostic medium, presenting a noninvasive and easily accessible option for biomarker analysis. Salivary hsCRP has thus emerged as a promising avenue for research and clinical application, offering potential advantages over blood-based assays. This comprehensive review aims to elucidate the biological basis of salivary hsCRP, its clinical applications, and methodologies for measurement. By exploring its diagnostic potential, prognostic value, and implications for treatment monitoring, this review highlights the potential impact of salivary hsCRP in modern medicine. Moreover, it emphasizes the need for continued exploration, validation, and integration of salivary hsCRP into routine clinical practice to realize its full potential for enhancing patient care and advancing personalized medicine approaches.
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Affiliation(s)
- Gautam N Bedi
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sourya Acharya
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sunil Kumar
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Smruti A Mapari
- Obstetrics and Gynecology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Arroyo MJ, Escobedo P, Ruiz-García I, Palma AJ, Santoyo F, Ortega-Muñoz M, Capitán-Vallvey LF, Erenas MM. POC device for rapid oral pH determination based on a smartphone platform. Mikrochim Acta 2024; 191:134. [PMID: 38353778 PMCID: PMC10867041 DOI: 10.1007/s00604-024-06227-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/18/2024] [Indexed: 02/16/2024]
Abstract
Salivary pH serves as a valuable and useful diagnostic marker for periodontal disease, as it not only plays a critical role in disease prevention but also in its development. Typically, saliva sampling is collected by draining and spitting it into collection tubes or using swabs. In this study, we have developed a Point-of-Care (POC) device for in situ determination of oral pH without the need for complex instruments, relying solely on a smartphone as the detection device. Our system utilizes a non-toxic vegetable colourimetric indicator, immobilized on a chitosan membrane located on a disposable stick, enabling direct sampling within the buccal cavity. An ad hoc designed 3D-printed attachment is used to ensure accurate positioning and alignment of the stick, as well as isolation from external lighting conditions. A custom-developed smartphone application captures and automatically processes the image of the sensing membrane, providing the salivary pH results. After optimizing the cocktail composition, the developed sensors demonstrated the capacity to determine pH within a range of 5.4 to 8.1 with a remarkable precision of 0.6%, achieving a very short analysis time of just 1 min. A stability study conducted on the sensing membranes revealed a lifetime of 50 days. To validate the performance of our analytical device, we compared its results against those obtained from a calibrated pH-meter, using a group of individuals. The device exhibited an average error of 2.4% when compared with the pH-meter results, confirming its reliability and accuracy.
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Affiliation(s)
- Manuel J Arroyo
- Department of Analytical Chemistry, ECsens, University of Granada, Campus Fuentenueva, Granada, Spain
| | - Pablo Escobedo
- ECsens, CITIC-UGR, iMUDS, Department of Electronics and Computer Technology, University of Granada, Granada, Spain.
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Granada, Spain.
| | - Isidoro Ruiz-García
- ECsens, CITIC-UGR, iMUDS, Department of Electronics and Computer Technology, University of Granada, Granada, Spain
| | - Alberto J Palma
- ECsens, CITIC-UGR, iMUDS, Department of Electronics and Computer Technology, University of Granada, Granada, Spain
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Granada, Spain
| | - Francisco Santoyo
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Granada, Spain
- Department of Organic Chemistry, University of Granada, Campus Fuentenueva, Granada, Spain
| | - Mariano Ortega-Muñoz
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Granada, Spain
- Department of Organic Chemistry, University of Granada, Campus Fuentenueva, Granada, Spain
| | - Luis Fermín Capitán-Vallvey
- Department of Analytical Chemistry, ECsens, University of Granada, Campus Fuentenueva, Granada, Spain
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Granada, Spain
| | - Miguel M Erenas
- Department of Analytical Chemistry, ECsens, University of Granada, Campus Fuentenueva, Granada, Spain.
- Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Granada, Spain.
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5
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Cennamo N, Bencivenga D, Annunziata M, Arcadio F, Stampone E, Piccirillo A, Della Ragione F, Zeni L, Guida L, Borriello A. Plasmon resonance biosensor for interleukin-1β point-of-care determination: A tool for early periodontitis diagnosis. iScience 2024; 27:108741. [PMID: 38269096 PMCID: PMC10805648 DOI: 10.1016/j.isci.2023.108741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 11/17/2023] [Accepted: 12/12/2023] [Indexed: 01/26/2024] Open
Abstract
Among pro-inflammatory cytokines, Interleukin-1β is crucially involved in several inflammatory-based diseases and even cancer. Increased Interleukin-1β levels in oral fluids have been proposed as an early marker of periodontitis, a broadly diffused chronic inflammatory condition of periodontal-supporting tissues, leading eventually to tooth loss. We describe the development of a portable surface-plasmon-resonance-based optical fiber probe suitably coated with an anti-Interleukin-1β antibody monolayer. A pico-nanomolar linear range of determination was obtained in both buffer solution and saliva with a rapid (3 min) incubation and high selectivity in presence of interferents. Higher Interleukin-1β concentration in the saliva of a periodontitis patient compared to a healthy control was determined. These measurements were validated by an automated ELISA system. Our results sustain the potential applicability of the proposed SPR-POF as diagnostic point-of-care device for real-time monitoring of salivary Interleukin-1β, that can support early detection of oral inflammatory-based pathologies and rapid and timely therapeutic decisions.
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Affiliation(s)
- Nunzio Cennamo
- Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma, 9, Aversa, CE 81031, Italy
| | - Debora Bencivenga
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, via De Crecchio, 7 80138 Naples, Italy
| | - Marco Annunziata
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania “Luigi Vanvitelli”, via De Crecchio, 6 80138 Naples, Italy
| | - Francesco Arcadio
- Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma, 9, Aversa, CE 81031, Italy
| | - Emanuela Stampone
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, via De Crecchio, 7 80138 Naples, Italy
| | - Angelantonio Piccirillo
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania “Luigi Vanvitelli”, via De Crecchio, 6 80138 Naples, Italy
| | - Fulvio Della Ragione
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, via De Crecchio, 7 80138 Naples, Italy
| | - Luigi Zeni
- Department of Engineering, University of Campania “Luigi Vanvitelli”, Via Roma, 9, Aversa, CE 81031, Italy
| | - Luigi Guida
- Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania “Luigi Vanvitelli”, via De Crecchio, 6 80138 Naples, Italy
| | - Adriana Borriello
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, via De Crecchio, 7 80138 Naples, Italy
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Rondanelli M, Barrile GC, Cavioni A, Donati P, Genovese E, Mansueto F, Mazzola G, Patelli Z, Pirola M, Razza C, Russano S, Sivieri C, Tartara A, Valentini EM, Perna S. A Narrative Review on Strategies for the Reversion of Prediabetes to Normoglycemia: Food Pyramid, Physical Activity, and Self-Monitoring Innovative Glucose Devices. Nutrients 2023; 15:4943. [PMID: 38068801 PMCID: PMC10707766 DOI: 10.3390/nu15234943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
In 2019, "Nutrition Therapy for Adults with Diabetes or Prediabetes: A Consensus Report" was published. This consensus report, however, did not provide an easy way to illustrate to subjects with prediabetes (SwPs) how to follow a correct dietary approach. The purpose of this review is to evaluate current evidence on optimum dietary treatment of SwPs and to provide a food pyramid for this population. The pyramid built shows that everyday consumption should consist of: whole-grain bread or potatoes eaten with their skins (for fiber and magnesium) and low glycemic index carbohydrates (GI < 55%) (three portions); fruit and vegetables (5 portions), in particular, green leafy vegetables (for fiber, magnesium, and polyphenols); EVO oil (almost 8 g); nuts (30 g, in particular, pistachios and almonds); three portions of dairy products (milk/yogurt: 300-400 g/day); mineral water (almost 1, 5 L/day for calcium intake); one glass of wine (125 mL); and three cups of coffee. Weekly portions should include fish (four portions), white meat (two portions), protein plant-based food (four portions), eggs (egg portions), and red/processed meats (once/week). At the top of the pyramid, there are two pennants: a green one means that SwPs need some personalized supplementation (if daily requirements cannot be satisfied through diet, vitamin D, omega-3, and vitamin B supplements), and a red one means there are some foods and factors that are banned (simple sugar, refined carbohydrates, and a sedentary lifestyle). Three to four times a week of aerobic and resistance exercises must be performed for 30-40 min. Finally, self-monitoring innovative salivary glucose devices could contribute to the reversion of prediabetes to normoglycemia.
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Affiliation(s)
- Mariangela Rondanelli
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Gaetan Claude Barrile
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Alessandro Cavioni
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Paolo Donati
- AICUBE srl, 20090 Trezzano sul Naviglio, Italy; (P.D.); (S.R.)
| | - Elisa Genovese
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Francesca Mansueto
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Giuseppe Mazzola
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Zaira Patelli
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Martina Pirola
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Claudia Razza
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Stefano Russano
- AICUBE srl, 20090 Trezzano sul Naviglio, Italy; (P.D.); (S.R.)
| | - Claudia Sivieri
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Alice Tartara
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Eugenio Marzio Valentini
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, 27100 Pavia, Italy; (G.C.B.); (A.C.); (E.G.); (F.M.); (G.M.); (Z.P.); (M.P.); (C.R.); (C.S.); (A.T.); (E.M.V.)
| | - Simone Perna
- Department of Food, Environmental and Nutritional Sciences, Division of Human Nutrition, University of Milan, 20133 Milan, Italy;
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7
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Falk M, Psotta C, Cirovic S, Ohlsson L, Shleev S. Electronic Tongue for Direct Assessment of SARS-CoV-2-Free and Infected Human Saliva-A Feasibility Study. BIOSENSORS 2023; 13:717. [PMID: 37504115 PMCID: PMC10377364 DOI: 10.3390/bios13070717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/21/2023] [Accepted: 07/04/2023] [Indexed: 07/29/2023]
Abstract
An electronic tongue is a powerful analytical instrument based on an array of non-selective chemical sensors with a partial specificity for data gathering and advanced pattern recognition methods for data analysis. Connecting electronic tongues with electrochemical techniques for data collection has led to various applications, mostly within sensing for food quality and environmental monitoring, but also in biomedical research for the analyses of different bioanalytes in human physiological fluids. In this paper, an electronic tongue consisting of six electrodes (viz., gold, platinum, palladium, titanium, iridium, and glassy carbon) was designed and tested in authentic (undiluted, unpretreated) human saliva samples from eight volunteers, collected before and during the COVID-19 pandemic. Investigations of 11 samples using differential pulse voltammetry and a principal component analysis allowed us to distinguish between SARS-CoV-2-free and infected authentic human saliva. This work, as a proof-of-principle demonstration, provides a new perspective for the use of electronic tongues in the field of enzyme-free electrochemical biosensing, highlighting their potential for future applications in non-invasive biomedical analyses.
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Affiliation(s)
- Magnus Falk
- Biomedical Science, Faculty of Health and Society, and Biofilms Research Center, Malmö University, 205 06 Malmö, Sweden
| | - Carolin Psotta
- Biomedical Science, Faculty of Health and Society, and Biofilms Research Center, Malmö University, 205 06 Malmö, Sweden
| | - Stefan Cirovic
- Biomedical Science, Faculty of Health and Society, and Biofilms Research Center, Malmö University, 205 06 Malmö, Sweden
| | - Lars Ohlsson
- Biomedical Science, Faculty of Health and Society, and Biofilms Research Center, Malmö University, 205 06 Malmö, Sweden
| | - Sergey Shleev
- Biomedical Science, Faculty of Health and Society, and Biofilms Research Center, Malmö University, 205 06 Malmö, Sweden
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Mulla SA, Bedia AS, Nimmagadda HK, Bedia S, Patil AH. Evaluation of Salivary Alkaline Phosphatase Levels in Passive Smokers of Different Age Groups. Cureus 2023; 15:e41336. [PMID: 37546068 PMCID: PMC10397416 DOI: 10.7759/cureus.41336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/02/2023] [Indexed: 08/08/2023] Open
Abstract
Background The smoke inhaled by a nonsmoker from the smoldering end of a cigarette is referred to as passive smoke. The nicotine present in smoke is known to cause tissue damage and alter the enzymatic composition of the body. Alkaline phosphatase (ALP) is a group of intracellular hydrolytic enzymes known to partake in cellular metabolism. ALP levels are affected by smoking as well as passive smoking (PS) with a change in the pH of the oral cavity. The association of salivary alkaline phosphatase (S-ALP) levels in different age groups, gender, and times of exposure is not thoroughly explored yet, which was the primary aim of this study. Material and methods A total of 64 samples were collected from passive smokers and non-smokers. Unstimulated saliva (2-2.5 mL) was collected from each subject after obtaining their consent, followed by centrifuging and mixing with ALP reagent in a semi-autoanalyzer to obtain the S-ALP levels. Results Higher S-ALP levels were seen in passive smokers (34.70 IU/L) compared to healthy individuals (12 IU/L), which came to be statistically significant (p<0.01). S-ALP levels, when compared to different age groups and gender, were statistically insignificant (p>0.05). However, higher levels were seen in association with time of exposure in passive smokers where the data was statistically significant (p<0.01), suggesting tissue damage possibly due to oxidative stresses and tissue inflammation on continuous exposure for a minimum of 30-60 minutes daily as per our study. Conclusion Significantly high levels of S-ALP were found in passive smokers in comparison to non-smokers. This suggests that passive smoking has negative effects on the body tissues. Age, gender, and time of exposure of a non-smoker to tobacco smoke can lead to alterations in S-ALP levels. High levels of S-ALP were seen in individuals with prolonged exposure to tobacco smoke on a daily basis. Salivaomics can thus be used as a non-invasive, economical, and accurate alternative in tissue damage diagnosis.
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Affiliation(s)
- Sayem A Mulla
- Oral Medicine and Radiology, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Navi Mumbai, IND
| | - Aarti S Bedia
- Oral Medicine and Radiology, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Navi Mumbai, IND
| | - Haritha K Nimmagadda
- Anatomy, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Navi Mumbai, IND
| | - Sumit Bedia
- Prosthodontics, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Navi Mumbai, IND
| | - Amit H Patil
- Conservative Dentistry and Endodontics, Bharati Vidyapeeth (Deemed to be University) Dental College and Hospital, Navi Mumbai, IND
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Xu X, Zhao Y, Liu Y. Wearable Electronics Based on Stretchable Organic Semiconductors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206309. [PMID: 36794301 DOI: 10.1002/smll.202206309] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/25/2022] [Indexed: 05/18/2023]
Abstract
Wearable electronics are attracting increasing interest due to the emerging Internet of Things (IoT). Compared to their inorganic counterparts, stretchable organic semiconductors (SOSs) are promising candidates for wearable electronics due to their excellent properties, including light weight, stretchability, dissolubility, compatibility with flexible substrates, easy tuning of electrical properties, low cost, and low temperature solution processability for large-area printing. Considerable efforts have been dedicated to the fabrication of SOS-based wearable electronics and their potential applications in various areas, including chemical sensors, organic light emitting diodes (OLEDs), organic photodiodes (OPDs), and organic photovoltaics (OPVs), have been demonstrated. In this review, some recent advances of SOS-based wearable electronics based on the classification by device functionality and potential applications are presented. In addition, a conclusion and potential challenges for further development of SOS-based wearable electronics are also discussed.
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Affiliation(s)
- Xinzhao Xu
- Laboratory of Molecular Materials and Devices, Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Yan Zhao
- Laboratory of Molecular Materials and Devices, Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
| | - Yunqi Liu
- Laboratory of Molecular Materials and Devices, Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China
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Vivarelli S, Italia S, Teodoro M, Pollicino M, Vitello C, De Vita A, Alibrandi A, Costa C, Fenga C. Salivary Biomarkers Analysis and Neurobehavioral Assessment in Nurses Working Rotation Shifts: A Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5376. [PMID: 37047991 PMCID: PMC10094107 DOI: 10.3390/ijerph20075376] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/07/2023] [Accepted: 03/27/2023] [Indexed: 06/19/2023]
Abstract
Currently, about one in five workers is employed in night shift work in Europe. Shift work including nighttime hours is essential in several activities, especially the healthcare sector. Importantly, night working may be associated with the occurrence of sleep disorders or work-related stress, both potentially augmenting the risk of errors and accidents at work. This study aims to examine the presence of neurobehavioral alterations that can be a consequence of shift working and concurrent misalignment of the sleep times and circadian rhythms. Nurses (n = 102) employed at a University Hospital located in North-Eastern Sicily, Italy, voluntarily participated in this pilot study. During medical surveillance, morning and evening salivary samples were collected, and seven psychodiagnostics questionnaires were administered to all the subjects. On one hand, the salivary levels of stress-related biomarkers (cortisol and alpha-amylase) and a circadian biomarker (melatonin) were evaluated. On the other hand, several neurobehavioral features were assessed, including depression, anxiety, work-related, and sleep issues. Interestingly, a positive relationship between salivary morning cortisol and depression scale, as well as a negative relationship between salivary morning alpha-amylase and work ability scale, were observed. Based on these results, the integration of subjective questionnaire outcomes and objective salivary biomarker quantification can help to identify workers with increased susceptibility to developing neurobehavioral alterations. This approach may contribute to ameliorating preventive strategies towards sensitive categories, such as nurses working rotation shifts.
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Affiliation(s)
- Silvia Vivarelli
- Department of Biomedical and Dental Sciences, Morphological and Functional Imaging, Section of Occupational Medicine, University of Messina, 98125 Messina, Italy
| | - Sebastiano Italia
- Department of Biomedical and Dental Sciences, Morphological and Functional Imaging, Section of Occupational Medicine, University of Messina, 98125 Messina, Italy
| | - Michele Teodoro
- Department of Biomedical and Dental Sciences, Morphological and Functional Imaging, Section of Occupational Medicine, University of Messina, 98125 Messina, Italy
| | - Manuela Pollicino
- Department of Biomedical and Dental Sciences, Morphological and Functional Imaging, Section of Occupational Medicine, University of Messina, 98125 Messina, Italy
| | - Carmen Vitello
- Department of Biomedical and Dental Sciences, Morphological and Functional Imaging, Section of Occupational Medicine, University of Messina, 98125 Messina, Italy
| | - Annalisa De Vita
- Department of Biomedical and Dental Sciences, Morphological and Functional Imaging, Section of Occupational Medicine, University of Messina, 98125 Messina, Italy
| | - Angela Alibrandi
- Department of Economics, University of Messina, 98125 Messina, Italy
| | - Chiara Costa
- Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Concettina Fenga
- Department of Biomedical and Dental Sciences, Morphological and Functional Imaging, Section of Occupational Medicine, University of Messina, 98125 Messina, Italy
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Chakraborty D, Ghosh D, Kumar S, Jenkins D, Chandrasekaran N, Mukherjee A. Nano-diagnostics as an emerging platform for oral cancer detection: Current and emerging trends. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023; 15:e1830. [PMID: 35811418 DOI: 10.1002/wnan.1830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 06/05/2022] [Accepted: 06/15/2022] [Indexed: 01/31/2023]
Abstract
Globally, oral cancer kills an estimated 150,000 individuals per year, with 300,000 new cases being diagnosed annually. The high incidence rate of oral cancer among the South-Asian and American populations is majorly due to overuse of tobacco, alcohol, and poor dental hygiene. Additionally, socio-economic issues and lack of general awareness delay the primary screening of the disease. The availability of early screening techniques for oral cancer can help in carving out a niche for accurate disease prognosis and also its prevention. However, conventional diagnostic approaches and therapeutics are still far from optimal. Thus, enhancing the analytical performance of diagnostic platforms in terms of specificity and precision can help in understanding the disease progression paradigm. Fabrication of efficient nanoprobes that are sensitive, noninvasive, cost-effective, and less labor-intensive can reduce the global cancer burden. Recent advances in optical, electrochemical, and spectroscopy-based nano biosensors that employ noble and superparamagnetic nanoparticles, have been proven to be extremely efficient. Further, these sensitive nanoprobes can also be employed for predicting disease relapse after chemotherapy, when the majority of the biomarker load is eliminated. Herein, we provide the readers with a brief summary of conventional and new-age oral cancer detection techniques. A comprehensive understanding of the inherent challenges associated with conventional oral cancer detection techniques is discussed. We also elaborate on how nanoparticles have shown tremendous promise and effectiveness in radically transforming the approach toward oral cancer detection. This article is categorized under: Diagnostic Tools > Biosensing Diagnostic Tools > Diagnostic Nanodevices Diagnostic Tools > In Vitro Nanoparticle-Based Sensing.
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Affiliation(s)
- Debolina Chakraborty
- School of Advanced Sciences, Vellore Institute of Technology, Vellore, India.,Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, India
| | - Debayan Ghosh
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, India
| | - Sanjit Kumar
- Centre for Bioseparation Technology, Vellore Institute of Technology, Vellore, India
| | - David Jenkins
- Wolfson Nanomaterials & Devices Laboratory, School of Computing, Electronics and Mathematics, Faculty of Science & Engineering, University of Plymouth, Devon, UK
| | | | - Amitava Mukherjee
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, India
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Aguiar JI, Silva MT, Ferreira HA, Pinto EC, Vasconcelos MW, Rangel AO, Mesquita RB. Development of a microfluidic paper-based analytical device for magnesium determination in saliva samples. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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13
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The potential of salivary biomarkers of nutritional status and dietary intake: A Systematic Review. J Dent 2021; 115:103840. [PMID: 34624418 DOI: 10.1016/j.jdent.2021.103840] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/24/2021] [Accepted: 09/29/2021] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVES To explore whether nutritional salivary biomarkers could be used to aid nutritional status assessment and/or support traditional dietary assessment methods for patients. DATA AND SOURCES Searches were performed using four electronic databases; MEDLINE, EMBASE, Scopus and Web of Science. Trial registers (i.e. Cochrane), grey literature and reference lists were searched. STUDY SELECTION Studies which measured nutritional salivary biomarkers related to nutritional status and/or dietary intake outcome were included. No restrictions on participants' age, study design, publication date, setting or health status. Animal studies, non-English language studies, commentaries, and conference abstracts were excluded. RESULTS Study titles and abstracts were screened (n = 7982), full-texts assessed (n = 176) and 85 studies were included in a narrative synthesis. The most promising salivary biomarkers for nutritional status included: glucose, where saliva and serum levels were positively correlated in those with type 2 diabetes (T2D), higher salivary calcium levels in post-menopausal women in general and specifically those with lower bone mineral density (BMD), and salivary vitamin D to assess vitamin D status in healthy volunteers. Higher salivary total antioxidant capacity (TAC), nitrate/nitrite and fluoride were observed with increased antioxidant, nitrate/nitrite and fluoride dietary intake, respectively. A meta-analysis found significantly higher mean salivary glucose (n = 12) in T2D compared with healthy controls, but there was substantial heterogeneity (I2=94%) and evidence of publication bias. CONCLUSIONS The most promising salivary biomarkers identified in this systematic review were, glucose, vitamin D, calcium, TAC, nitrate/nitrite and fluoride. However, this was based on a small number of studies of varying quality, with many lacking a salivary assay performance assessment. CLINICAL SIGNIFICANCE At present, nutritional salivary biomarkers cannot be used alone to assess nutritional status or dietary intake. Further research into the most promising nutritional salivary biomarkers is required.
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15
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Azeem MS, Yesupatham ST, Mohiyuddin SMA, Sumanth V, Ravishankar S. Usefulness of salivary sialic acid as a tumor marker in tobacco chewers with oral cancer. J Cancer Res Ther 2020; 16:605-611. [PMID: 32719275 DOI: 10.4103/jcrt.jcrt_337_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Aim This study aims to assess the usefulness of salivary sialic acid (SA) as a tumor marker in the detection of oral squamous cell carcinoma (OSCC) among tobacco chewers. Materials and Methods After the approval of study protocol by the Institutional Ethics Committee and informed voluntary consent, salivary samples were collected from 96 participants in each group of tobacco chewers with OSCC, tobacco chewers without precancerous or cancerous lesion, and healthy controls. Salivary protein-bound SA (PBSA) and salivary-free SA (FSA) were measured by Yao et al.'s method of acid ninhydrin reaction, and the data were subjected to appropriate statistical analysis. Results The salivary PBSA and FSA levels in the Groups 1, 2, and 3 participants were 31.17 ± 7.6 mg/dL and 63.45 ± 9.8 mg/dL, 25.45 ± 16.61 mg/dL and 33.18 ± 11.38 mg/dL, and 22.73 ± 3.01 mg/dL and 21.62 ± 8.86 mg/dL, respectively. Salivary FSA levels were significantly increased among the tobacco chewers with OSCC patients (Group 1) and tobacco chewers with no premalignant lesions of the oral cavity (Group 2) compared to the healthy controls (Group 3) with P < 0.05 being statistically significant. Salivary FSA levels were significantly increased in Group 1 as compared with Group 2. The salivary PBSA was high among Group 1 as compared to the control Group 3; there was however no significant difference in the levels of salivary PBSA between Group 1 and Group 2. There was no significant difference in the PBSA levels between OSCC patients of Group 1 and the tobacco chewers without precancerous or cancerous lesion in the oral cavity of Group 2. Conclusion Salivary PBSA and FSA are significantly raised in both tobacco chewers with OSCC and in tobacco chewers with no precancerous or cancerous lesions in the oral cavity. SA should therefore be used cautiously while considering it as a marker for the early detection of oral cancer. Tobacco can be a crucial confounding factor when SA is used as a biomarker in OSCC since their levels are elevated to some extent even in tobacco chewers without any clinically obvious precancerous or cancerous lesions in the oral cavity.
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Affiliation(s)
- Mahnaaz Sultana Azeem
- Department of Otorhinolaryngology and Head and Neck Surgery, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, Karnataka, India
| | | | - S M Azeem Mohiyuddin
- Department of Otorhinolaryngology and Head and Neck Surgery, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, Karnataka, India
| | - V Sumanth
- Department of Otorhinolaryngology and Head and Neck Surgery, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, Karnataka, India
| | - S Ravishankar
- Department of Community Medicine, Sri Devaraj Urs Academy of Higher Education and Research, Kolar, Karnataka, India
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Gandhi V, O'Brien MH, Yadav S. High-Quality and High-Yield RNA Extraction Method From Whole Human Saliva. Biomark Insights 2020; 15:1177271920929705. [PMID: 32550766 PMCID: PMC7281883 DOI: 10.1177/1177271920929705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 03/08/2020] [Indexed: 01/16/2023] Open
Abstract
Background Human saliva has been identified as a novel, practical, and noninvasive source of biomarkers and genetic materials. However, it is equally challenging due to the availability of an abundance of impurities in the form of microbes and other proteinaceous compounds. The objective of this study was to develop a robust, reproducible, and economic method of extracting high-yield and high-quality RNA from whole human saliva. Methods The modified TRIzol protocol was developed to extract RNA from saliva (n = 14), followed by complementary DNA synthesis and reverse transcription quantitative polymerase chain reaction analyses for the genes encoding IL1B, ALPL, RUNX2, and ACTB. To compare our protocol with the spin column-based method, we used Qiagen Salivary Protect Micro-RNA spin columns (n = 6). To evaluate and compare the yields and quality of extracted RNAs from both methods, we used (1) Experion Bioanalyzer, (2) QuantiFluor RNA dye, and (3) NanoDrop 2000 Spectrometer. Results With the modified TRIzol lysis protocol, a high yield of total RNA, on average 12.34 μg, from saliva was extracted compared with on average 0.2 μg with a spin column-based method. The average RQI (RNA quality index) with the TRIzol method was 7.86, which is also comparable with that of the spin column-based method (RQI = 7.58). QuantiFluor dye used for RNA quantification showed a 16-fold higher yield of RNA concentration using our TRIzol protocol. Conclusions Our modified TRIzol protocol is a reproducible method to extract RNA from whole human saliva which can be used for gene expression analysis. This method allows also ensures the quality of RNA required for specific applications such as RNA sequencing.
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Affiliation(s)
- Vaibhav Gandhi
- Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut Health, Farmington, CT, USA
| | - Mara H O'Brien
- Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut Health, Farmington, CT, USA
| | - Sumit Yadav
- Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut Health, Farmington, CT, USA
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Ankita K, Shwetha V, Vanitha S, Reddy Sujatha S, Nagaraju R, Tupakula Pavan K. Assessment of salivary endothelin-1 in patients with leukoplakia, submucous fibrosis, oral cancer and healthy individuals - a comparative study. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2019; 120:326-331. [PMID: 30858129 DOI: 10.1016/j.jormas.2019.02.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/26/2019] [Accepted: 02/28/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND Oral cancer is one of the highly prevalent cancers worldwide being. According to data of GLOBOCAN 2018, the estimated incidence, mortality and 5-year survival rates due to lip, oral cavity and salivary gland cancer in world is (2.0%), (0.5%) and (0.3%) respectively. (Bray, Ferlay and Soerjomataram, 2018). Endothelin-1 (ET-1) is a 21-amino acid peptide; its receptors have been implicated in the growth and progression of both primary and metastatic neoplasms throughout the human body. Studies have shown that ET-1 is expressed in tissue, serum and other body fluids. AIM To estimate the levels of salivary endothelin-1 in Oral potentially malignant disorders (oral leukoplakia and submucous fibrosis) and oral squamous cell carcinoma. MATERIALS AND METHODS The study population included 60 subjects and were divided into 4 groups. All patients included in the study are clinically and histopathological diagnosed cases of oral leukoplakia, submucous fibrosis and oral cancer and assessed for salivary ET-1 levels using human ELISA kit. Significant differences between the groups were determined using one-way analysis of variance, LSD and Post HOC, unpaired t test, biserial and spearson's correlation. RESULTS The mean levels of salivary Endothelin-1 level in study groups were: 82.78 ± 5.9 pg/mL (OSCC), 65.02 ± 1.8 pg/mL (SMF), 57.76 ± 4.1 pg/mL (LEUKOPLAKIA), 29.72 ± 14.1 pg/mL (CONTROLS). The mean Salivary ET-1 levels among these four groups was compared and the difference was statistically significant (P < 0.001). We also found a significant difference in the means of ET-1 levels among the clinical and histopathological staging of the study groups. CONCLUSION Our results demonstrate potential utility of salivary analysis for ET-1 levels to monitor patients at risk for OSCC. Although provides the basis for a larger prospective study to determine the critical levels of salivary ET-1 necessary to diagnose and monitor OPMD's and its potential to undergo malignant transformation.
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Affiliation(s)
- K Ankita
- Faculty of Dental Sciences, Ramaiah University of Applied Sciences, India.
| | - V Shwetha
- Faculty of Dental Sciences, Ramaiah University of Applied Sciences, India
| | - S Vanitha
- M.S Ramaiah Medical College And Hospital, India
| | - S Reddy Sujatha
- Faculty of Dental Sciences, Ramaiah University of Applied Sciences, India
| | - R Nagaraju
- Faculty of Dental Sciences, Ramaiah University of Applied Sciences, India
| | - K Tupakula Pavan
- Faculty of Dental Sciences, Ramaiah University of Applied Sciences, India
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18
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Menke JM, Ahsan MS, Khoo SP. More Accurate Oral Cancer Screening with Fewer Salivary Biomarkers. BIOMARKERS IN CANCER 2017; 9:1179299X17732007. [PMID: 29085239 PMCID: PMC5648090 DOI: 10.1177/1179299x17732007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/21/2017] [Indexed: 01/05/2023]
Abstract
Signal detection and Bayesian inferential tools were applied to salivary biomarkers to improve screening accuracy and efficiency in detecting oral squamous cell carcinoma (OSCC). Potential cancer biomarkers are identified by significant differences in assay concentrations, receiver operating characteristic areas under the curve (AUCs), sensitivity, and specificity. However, the end goal is to report to individual patients their risk of having disease given positive or negative test results. Likelihood ratios (LRs) and Bayes factors (BFs) estimate evidential support and compile biomarker information to optimize screening accuracy. In total, 26 of 77 biomarkers were mentioned as having been tested at least twice in 137 studies and published in 16 summary papers through 2014. Studies represented 10 212 OSCC and 25 645 healthy patients. The measure of biomarker and panel information value was number of biomarkers needed to approximate 100% positive predictive value (PPV). As few as 5 biomarkers could achieve nearly 100% PPV for a disease prevalence of 0.2% when biomarkers were ordered from highest to lowest LR. When sequentially interpreting biomarker tests, high specificity was more important than test sensitivity in achieving rapid convergence toward a high PPV. Biomarkers ranked from highest to lowest LR were more informative and easier to interpret than AUC or Youden index. The proposed method should be applied to more recently published biomarker data to test its screening value.
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Affiliation(s)
| | - Md Shahidul Ahsan
- Department of Oral Pathology, Radiology and Medicine, College of Dentistry and Dental Clinics, The University of Iowa, Iowa City, IA, USA
| | - Suan Phaik Khoo
- Department of Oral Diagnostic and Surgical Sciences, School of Dentistry, International Medical University (IMU), Kuala Lumpur, Malaysia
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Friedman E, Alizadeh N, Loewy Z. Oral Health: The Need for Both Conventional Microbial and Molecular Characterization. High Throughput 2017; 6:ht6030011. [PMID: 29485609 PMCID: PMC5734190 DOI: 10.3390/ht6030011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 12/22/2022] Open
Abstract
This study aims to consider the microbial distribution in oral disease, as well as gene analysis and expression, in elucidating: 1, the fundamental underpinnings of oral disease, and 2, the potential relationship between oral diseases and systemic health. A key focus is identifying the microbiota associated with oral disease manifestations characterized by both conventional microbiological and molecular methods. Variations in the observed microbial populations characterized by conventional and molecular approaches have been identified for caries, periodontitis, peri-implantitis, and stomatitis. The discovery of therapeutic approaches for oral disease will require comprehensive microbial and genomic analysis. This study evaluated the current state of the relevant microbial and genomic information for several prevalent oral diseases.
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Affiliation(s)
- Elisheva Friedman
- Department of Pharmaceutical and Biomedical Sciences, Touro College of Pharmacy, New York, NY 10027, USA.
| | - Negin Alizadeh
- Department of Pharmaceutical and Biomedical Sciences, Touro College of Pharmacy, New York, NY 10027, USA.
| | - Zvi Loewy
- Department of Pharmaceutical and Biomedical Sciences, Touro College of Pharmacy, New York, NY 10027, USA.
- Department of Microbiology and Immunology, New York Medical College, Valhalla, NY 10595, USA.
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Oral Health: The Need for Both Conventional Microbial and Molecular Characterization. High Throughput 2017. [DOI: 10.3390/ht6010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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21
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Oral Health: The Need for Both Conventional Microbial and Molecular Characterization. High Throughput 2017. [DOI: 10.3390/ht6030002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Qin Y, Zhong Y, Ma T, Zhang J, Yang G, Guan F, Li Z, Li B. A pilot study of salivary N-glycome in HBV-induced chronic hepatitis, cirrhosis, and hepatocellular carcinoma. Glycoconj J 2017; 34:523-535. [PMID: 28389847 DOI: 10.1007/s10719-017-9768-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/16/2017] [Accepted: 03/27/2017] [Indexed: 12/11/2022]
Abstract
Hepatitis B is a potentially life-threatening liver infection caused by the hepatitis B virus (HBV), which can lead to chronic liver disease and put people at high risk of death from cirrhosis of the liver and liver cancer. However, little is known about the correlation of salivary N-linked glycans related to HBV-infected liver diseases. Here we investigated N-linked glycome in saliva from 200 subjects (50 healthy volunteers (HV), 40 HBV-infected patients (HB), 50 cirrhosis patients (HC), and 60 hepatocellular carcinoma patients (HCC) using MALDI-TOF/TOF-MS. Representative MS spectra of N-glycans with signal-to-noise ratios >6 were annotated using the GlycoWorkbench program. A total of 40, 47, 29, and 33 N-glycan peaks were identified and annotated from HV, HB, HC, and HCC groups, respectively. There were 15 N-glycan peaks (e.g., m/z 1647.587, 1688.613 and 2101.755) were present in all groups. Three N-glycan peaks (m/z 2596.925, 2756.962, and 2921.031) were unique in HV group, 2 N-glycan peaks (m/z 1898.676 and 1971.692) were unique in HB group, 5 N-glycan peaks (m/z 1954.677, 2507.914, 2580.930, 2637.952, and 3092.120) were unique in HC group, and 3 N-glycan peaks (m/z 2240.830, 2507.914, and 3931.338) were unique in HCC group. The proportion of fucosylated N-glycans was apparently increased in the HCC group (84.8%) than in any other group (73.1% ± 0.01), however, the proportion of sialylated N-glycans was decreased in HCC group (12.1%) than in any other group (17.23% ± 0.003). Our data provide pivotal information to distinguish between HBV-associated hepatitis, cirrhosis and HCC, and facilitate the discovery of biomarkers for HCC during its early stages based on precise alterations of N-linked glycans in saliva.
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Affiliation(s)
- Yannan Qin
- The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University Health Science Center, 277 Yanta Xilu, Xi'an, 710061, China
| | - Yaogang Zhong
- Laboratory for Functional Glycomics, College of Life Sciences, Northwest University, No. 229 Taibai Beilu, Xi'an, 710069, China
| | - Tianran Ma
- Laboratory for Functional Glycomics, College of Life Sciences, Northwest University, No. 229 Taibai Beilu, Xi'an, 710069, China
| | - Jiaxu Zhang
- Laboratory for Functional Glycomics, College of Life Sciences, Northwest University, No. 229 Taibai Beilu, Xi'an, 710069, China
| | - Ganglong Yang
- The Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Feng Guan
- The Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Zheng Li
- Laboratory for Functional Glycomics, College of Life Sciences, Northwest University, No. 229 Taibai Beilu, Xi'an, 710069, China.
| | - Baozhen Li
- The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University Health Science Center, 277 Yanta Xilu, Xi'an, 710061, China.
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Selection of Suitable Reference Genes for Analysis of Salivary Transcriptome in Non-Syndromic Autistic Male Children. Int J Mol Sci 2016; 17:ijms17101711. [PMID: 27754318 PMCID: PMC5085743 DOI: 10.3390/ijms17101711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/29/2016] [Accepted: 09/30/2016] [Indexed: 02/08/2023] Open
Abstract
Childhood autism is a severe form of complex genetically heterogeneous and behaviorally defined set of neurodevelopmental diseases, collectively termed as autism spectrum disorders (ASD). Reverse transcriptase quantitative real-time PCR (RT-qPCR) is a highly sensitive technique for transcriptome analysis, and it has been frequently used in ASD gene expression studies. However, normalization to stably expressed reference gene(s) is necessary to validate any alteration reported at the mRNA level for target genes. The main goal of the present study was to find the most stable reference genes in the salivary transcriptome for RT-qPCR analysis in non-syndromic male childhood autism. Saliva samples were obtained from nine drug naïve non-syndromic male children with autism and also sex-, age-, and location-matched healthy controls using the RNA-stabilizer kit from DNA Genotek. A systematic two-phased measurement of whole saliva mRNA levels for eight common housekeeping genes (HKGs) was carried out by RT-qPCR, and the stability of expression for each candidate gene was analyzed using two specialized algorithms, geNorm and NormFinder, in parallel. Our analysis shows that while the frequently used HKG ACTB is not a suitable reference gene, the combination of GAPDH and YWHAZ could be recommended for normalization of RT-qPCR analysis of salivary transcriptome in non-syndromic autistic male children.
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Elmongy H, Abdel-Rehim M. Saliva as an alternative specimen to plasma for drug bioanalysis: A review. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.07.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Cheng YSL, Jordan L, Chen HS, Kang D, Oxford L, Plemons J, Parks H, Rees T. Chronic periodontitis can affect the levels of potential oral cancer salivary mRNA biomarkers. J Periodontal Res 2016; 52:428-437. [PMID: 27549383 DOI: 10.1111/jre.12407] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2016] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND OBJECTIVE More than 100 salivary constituents have been found to show levels significantly different in patients with oral squamous cell carcinoma (OSCC) from those found in healthy controls, and therefore have been suggested to be potential salivary biomarkers for OSCC detection. However, many of these potential OSCC salivary biomarkers are also involved in chronic inflammation, and whether the levels of these biomarkers could be affected by the presence of chronic periodontitis was not known. The objective of this pilot study was therefore to measure the levels of seven previously reported potential OSCC salivary mRNA biomarkers in patients with chronic periodontitis and compare them to levels found in patients with OSCC and healthy controls. The seven salivary mRNAs were interleukin (IL)-8, IL-1β, dual specificity phosphatase 1, H3 histone family 3A, ornithine decarboxylase antizyme 1, S100 calcium-binding protein P (S100P) and spermidine/spermine N1-acetyltransferase 1. MATERIAL AND METHODS Unstimulated whole saliva samples were collected from a total of 105 human subjects from the following four study groups: OSCC; CPNS (chronic periodontitis, moderate to severe degree, non-smokers); CPS (chronic periodontitis, moderate to severe degree, smokers); and healthy controls. Levels of each mRNA in patient groups (OSCC or chronic periodontitis) relative to the healthy controls were determined by a pre-amplification reverse transcription-quantitative polymerase chain reaction approach with nested gene-specific primers. Results were recorded and analyzed by the Bio-Rad CFX96 Real-Time System. Mean fold changes between each pair of patient vs. control groups were analyzed by the Mann-Whitney U-test with Bonferroni corrections. RESULTS Only S100P showed significantly higher levels in patients with OSCC compared to both patients with CPNS (p = 0.003) and CPS (p = 0.007). The difference in S100P levels between patients with OSCC and healthy controls was also marginally significant (p = 0.009). There was no significant difference in the levels of salivary IL-8, IL-1β and dual specificity phosphatase 1 mRNAs between patients with OSCC and patients with CPNS (p = 0.510, 0.058 and 0.078, respectively); no significant difference in levels of salivary ornithine decarboxylase antizyme 1 and spermine N1-acetyltransferase mRNAs between patients with OSCC and patients with CPS (p = 0.318 and 0.764, respectively); and no significant difference in levels of the H3 histone family 3A mRNA between patients with OSCC and either CPS (p = 0.449) or healthy controls (p = 0.107). CONCLUSIONS Salivary S100P mRNA could be a reliable biomarker for OSCC detection, regardless of the presence of chronic periodontitis. The presence of chronic periodontitis could significantly affect the levels of the other six mRNAs, and negatively influence reliability for using them as biomarkers for oral cancer detection.
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Affiliation(s)
- Y-S L Cheng
- Department of Diagnostic Sciences, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - L Jordan
- Department of Diagnostic Sciences, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - H-S Chen
- College of Nursing, University of Toledo, Toledo, OH, USA
| | - D Kang
- Department of Surgery, Methodist Hospital, Dallas, TX, USA
| | - L Oxford
- Baylor University Medical Center, Dallas, TX, USA
| | - J Plemons
- Department of Periodontics, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - H Parks
- Department of Periodontics, Texas A&M University College of Dentistry, Dallas, TX, USA
| | - T Rees
- Department of Periodontics, Texas A&M University College of Dentistry, Dallas, TX, USA
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Nagarajan R, Miller CS, Dawson D, Al-Sabbagh M, Ebersole JL. Patient-Specific Variations in Biomarkers across Gingivitis and Periodontitis. PLoS One 2015; 10:e0136792. [PMID: 26407063 PMCID: PMC4583448 DOI: 10.1371/journal.pone.0136792] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 08/08/2015] [Indexed: 12/31/2022] Open
Abstract
This study investigates the use of saliva, as an emerging diagnostic fluid in conjunction with classification techniques to discern biological heterogeneity in clinically labelled gingivitis and periodontitis subjects (80 subjects; 40/group) A battery of classification techniques were investigated as traditional single classifier systems as well as within a novel selective voting ensemble classification approach (SVA) framework. Unlike traditional single classifiers, SVA is shown to reveal patient-specific variations within disease groups, which may be important for identifying proclivity to disease progression or disease stability. Salivary expression profiles of IL-1ß, IL-6, MMP-8, and MIP-1α from 80 patients were analyzed using four classification algorithms (LDA: Linear Discriminant Analysis [LDA], Quadratic Discriminant Analysis [QDA], Naïve Bayes Classifier [NBC] and Support Vector Machines [SVM]) as traditional single classifiers and within the SVA framework (SVA-LDA, SVA-QDA, SVA-NB and SVA-SVM). Our findings demonstrate that performance measures (sensitivity, specificity and accuracy) of traditional classification as single classifier were comparable to that of the SVA counterparts using clinical labels of the samples as ground truth. However, unlike traditional single classifier approaches, the normalized ensemble vote-counts from SVA revealed varying proclivity of the subjects for each of the disease groups. More importantly, the SVA identified a subset of gingivitis and periodontitis samples that demonstrated a biological proclivity commensurate with the other clinical group. This subset was confirmed across SVA-LDA, SVA-QDA, SVA-NB and SVA-SVM. Heatmap visualization of their ensemble sets revealed lack of consensus between these subsets and the rest of the samples within the respective disease groups indicating the unique nature of the patients in these subsets. While the source of variation is not known, the results presented clearly elucidate the need for novel approaches that accommodate inherent heterogeneity and personalized variations within disease groups in diagnostic characterization. The proposed approach falls within the scope of P4 medicine (predictive, preventive, personalized, and participatory) with the ability to identify unique patient profiles that may predict specific disease trajectories and targeted disease management.
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Affiliation(s)
- Radhakrishnan Nagarajan
- Division of Biomedical Informatics, Department of Biostatistics, College of Public Health, University of Kentucky, Lexington, KY, United States of America
| | - Craig S. Miller
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, KY, United States of America
- Division of Oral Medicine, Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, United States of America
| | - Dolph Dawson
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, KY, United States of America
- Division of Periodontics, Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, United States of America
| | - Mohanad Al-Sabbagh
- Division of Periodontics, Department of Oral Health Practice, College of Dentistry, University of Kentucky, Lexington, KY, United States of America
| | - Jeffrey L. Ebersole
- Center for Oral Health Research, College of Dentistry, University of Kentucky, Lexington, KY, United States of America
- * E-mail:
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Richter J, Svozil V, Král V, Rajnohová Dobiášová L, Stiborová I, Vetvicka V. Clinical trials of yeast-derived β-(1,3) glucan in children: effects on innate immunity. ANNALS OF TRANSLATIONAL MEDICINE 2014; 2:15. [PMID: 25332991 DOI: 10.3978/j.issn.2305-5839.2014.02.01] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 02/08/2014] [Indexed: 01/22/2023]
Abstract
BACKGROUND The role of glucan in the stimulation of immune reactions is well established. In our report, we focused on the effects of orally administered glucan on nonspecific immunity of children with chronic respiratory problems. MATERIALS AND METHODS We measured the levels of albumin, lysozyme. C-reactive protein (CRP) and calprotectin in the saliva of 60 children ages 8-12 years and evaluated the effects of 30-day treatment with 100 mg/d oral dose of glucan. RESULTS We found a significant increase in the production of lysozyme, CRP and calprotectin in glucan-treated children. CONCLUSIONS Short-term oral application of natural immunomodulator β-glucan significantly stimulated mucosal immunity of children with chronic respiratory problems.
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Affiliation(s)
- Josef Richter
- 1 Zdravotní ústav se sídlem v Ústí nad Labem, Czech Republic ; 2 Sanatorium Edel, Zlaté Hory, Czech Republic ; 3 University of Louisville, Department of Pathology, Louisville, KY, USA
| | - Vladimir Svozil
- 1 Zdravotní ústav se sídlem v Ústí nad Labem, Czech Republic ; 2 Sanatorium Edel, Zlaté Hory, Czech Republic ; 3 University of Louisville, Department of Pathology, Louisville, KY, USA
| | - Vlastimil Král
- 1 Zdravotní ústav se sídlem v Ústí nad Labem, Czech Republic ; 2 Sanatorium Edel, Zlaté Hory, Czech Republic ; 3 University of Louisville, Department of Pathology, Louisville, KY, USA
| | - Lucie Rajnohová Dobiášová
- 1 Zdravotní ústav se sídlem v Ústí nad Labem, Czech Republic ; 2 Sanatorium Edel, Zlaté Hory, Czech Republic ; 3 University of Louisville, Department of Pathology, Louisville, KY, USA
| | - Ivana Stiborová
- 1 Zdravotní ústav se sídlem v Ústí nad Labem, Czech Republic ; 2 Sanatorium Edel, Zlaté Hory, Czech Republic ; 3 University of Louisville, Department of Pathology, Louisville, KY, USA
| | - Vaclav Vetvicka
- 1 Zdravotní ústav se sídlem v Ústí nad Labem, Czech Republic ; 2 Sanatorium Edel, Zlaté Hory, Czech Republic ; 3 University of Louisville, Department of Pathology, Louisville, KY, USA
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Kotłowska A. Application of Chemometric Techniques in Search of Clinically Applicable Biomarkers of Disease. Drug Dev Res 2014; 75:283-90. [DOI: 10.1002/ddr.21213] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Alicja Kotłowska
- Department of Food Sciences; Faculty of Pharmacy; Medical University of Gdańsk; Gdańsk 80-416 Poland
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Levenson V, Mori Y. The era of personalized medicine: mechanistic or correlative biomarkers? Per Med 2014; 11:361-364. [PMID: 29783484 DOI: 10.2217/pme.14.10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Victor Levenson
- CatholicHealth Initiatives Center for Translational Research, 801 West Baltimore Street, Ste 302, Baltimore, MD 21201, USA
| | - Yuriko Mori
- CatholicHealth Initiatives Center for Translational Research, 801 West Baltimore Street, Ste 302, Baltimore, MD 21201, USA
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High Molecular Complexes of Insulin-Like Growth Factor-I in Human Saliva. Int J Pept Res Ther 2014. [DOI: 10.1007/s10989-014-9408-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Guan Y, Zhou G, Ye J. Fast Quantification of Salivary 8-Hydroxy-2′-deoxyguanosine as DNA Damage Biomarker Using CE with Electrochemical Detection. Chromatographia 2014. [DOI: 10.1007/s10337-014-2640-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gómez-Lázaro M, Rinn C, Aroso M, Amado F, Schrader M. Proteomic analysis of zymogen granules. Expert Rev Proteomics 2014; 7:735-47. [DOI: 10.1586/epr.10.31] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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34
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Chianeh YR, Prabhu K. Biochemical markers in saliva of patients with oral squamous cell carcinoma. ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2014. [DOI: 10.1016/s2222-1808(14)60412-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Wood PL. Mass spectrometry strategies for clinical metabolomics and lipidomics in psychiatry, neurology, and neuro-oncology. Neuropsychopharmacology 2014; 39:24-33. [PMID: 23842599 PMCID: PMC3857645 DOI: 10.1038/npp.2013.167] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 07/04/2013] [Indexed: 12/14/2022]
Abstract
Metabolomics research has the potential to provide biomarkers for the detection of disease, for subtyping complex disease populations, for monitoring disease progression and therapy, and for defining new molecular targets for therapeutic intervention. These potentials are far from being realized because of a number of technical, conceptual, financial, and bioinformatics issues. Mass spectrometry provides analytical platforms that address the technical barriers to success in metabolomics research; however, the limited commercial availability of analytical and stable isotope standards has created a bottleneck for the absolute quantitation of a number of metabolites. Conceptual and financial factors contribute to the generation of statistically under-powered clinical studies, whereas bioinformatics issues result in the publication of a large number of unidentified metabolites. The path forward in this field involves targeted metabolomics analyses of large control and patient populations to define both the normal range of a defined metabolite and the potential heterogeneity (eg, bimodal) in complex patient populations. This approach requires that metabolomics research groups, in addition to developing a number of analytical platforms, build sufficient chemistry resources to supply the analytical standards required for absolute metabolite quantitation. Examples of metabolomics evaluations of sulfur amino-acid metabolism in psychiatry, neurology, and neuro-oncology and of lipidomics in neurology will be reviewed.
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Affiliation(s)
- Paul L Wood
- Metabolomics Unit, Department of Physiology and Pharmacology, DeBusk College of Osteopathic Medicine, Lincoln Memorial University, Math and Science 435, Harrogate, TN 37752, USA
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36
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Jessie K, Jayapalan JJ, Ong KC, Abdul Rahim ZH, Zain RM, Wong KT, Hashim OH. Aberrant proteins in the saliva of patients with oral squamous cell carcinoma. Electrophoresis 2013; 34:2495-502. [DOI: 10.1002/elps.201300107] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/27/2013] [Accepted: 06/10/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Kala Jessie
- Department of Oral Biology; Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | | | - Kien-Chai Ong
- Department of Molecular Medicine; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
| | | | - Rosnah Mohd Zain
- Oral Cancer Research and Coordinating Centre; Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Kum-Thong Wong
- Department of Pathology; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
| | - Onn Haji Hashim
- University of Malaya Centre for Proteomics Research; University of Malaya; Kuala Lumpur Malaysia
- Department of Molecular Medicine; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
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Lazarevic V, Gaïa N, Girard M, François P, Schrenzel J. Comparison of DNA extraction methods in analysis of salivary bacterial communities. PLoS One 2013; 8:e67699. [PMID: 23844068 PMCID: PMC3701005 DOI: 10.1371/journal.pone.0067699] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 05/23/2013] [Indexed: 11/18/2022] Open
Abstract
Culture-independent high-throughput sequencing-based methods are widely used to study bacterial communities. Although these approaches are superior to traditional culture-based methods, they introduce bias at the experimental and bioinformatics levels. We assessed the diversity of the human salivary microbiome by pyrosequencing of the 16S rDNA V1–3 amplicons using metagenomic DNA extracted by two different protocols: a simple proteinase K digestion without a subsequent DNA clean-up step, and a bead-beating mechanical lysis protocol followed by column DNA purification. A high degree of congruence was found between the two extraction methods, most notably in regard to the microbial community composition. The results showed that for a given bioinformatics pipeline, all the taxa with an average proportion >0.12% in samples processed using one extraction method were also detected in samples extracted using the other method. The same taxa tended to be abundant and frequent for both extraction methods. The relative abundance of sequence reads assigned to the phyla Actinobacteria, Spirochaetes, TM7, Synergistetes, and Tenericutes was significantly higher in the mechanically-treated samples than in the enzymatically-treated samples, whereas the phylum Firmicutes showed the opposite pattern. No significant differences in diversity indices were found between the extraction methods, although the mechanical lysis method revealed higher operational taxonomic unit richness. Differences between the extraction procedures outweighed the variations due to the bioinformatics analysis pipelines used.
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Affiliation(s)
- Vladimir Lazarevic
- Genomic Research Laboratory, Division of Infectious Diseases, Geneva University Hospitals, Geneva, Switzerland.
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Zhang N, Zhang Z, Feng S, Wang Q, Malamud D, Deng H. Quantitative analysis of differentially expressed saliva proteins in human immunodeficiency virus type 1 (HIV-1) infected individuals. Anal Chim Acta 2013; 774:61-6. [PMID: 23567117 PMCID: PMC4507271 DOI: 10.1016/j.aca.2013.02.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 02/15/2013] [Accepted: 02/19/2013] [Indexed: 02/05/2023]
Abstract
In the present study, we have established a new methodology to analyze saliva proteins from HIV-1-seropositive patients before highly active antiretroviral therapy (HAART) and seronegative controls. A total of 593 and 601 proteins were identified in the pooled saliva samples from 5 HIV-1 subjects and 5 controls, respectively. Forty-one proteins were found to be differentially expressed. Bioinformatic analysis of differentially expressed salivary proteins showed an increase of antimicrobial proteins and decrease of protease inhibitors upon HIV-1 infection. To validate some of these differentially expressed proteins, a high-throughput quantitation method was established to determine concentrations of 10 salivary proteins in 40 individual saliva samples from 20 seropositive patients before HAART and 20 seronegative subjects. This method was based on limited protein separation within the zone of the stacking gel of the 1D SDS PAGE and using isotope-coded synthetic peptides as internal standards. The results demonstrated that a combination of protein profiling and targeted quantitation is an efficient method to identify and validate differentially expressed salivary proteins. Expression levels of members of the calcium-binding S100 protein family and deleted in malignant brain tumors 1 protein (DMBT1) were up-regulated while that of Mucin 5B was down-regulated in HIV-1 seropositive saliva samples, which may provide new perspectives for monitoring HIV-infection and understanding the mechanism of HIV-1 infectivity.
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Affiliation(s)
- Nawei Zhang
- Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing, China
| | - Zhenyu Zhang
- Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing, China
| | - Shan Feng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China
| | - Qingtao Wang
- Beijing Chaoyang Hospital Affiliated Capital Medical University, Beijing, China
| | - Daniel Malamud
- NYU College of Dentistry, 345 East 24th Street, New York, NY 10010, USA
| | - Haiteng Deng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, China
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Foley JD, Sneed JD, Steinhubl SR, Kolasa J, Ebersole JL, Lin Y, Kryscio RJ, McDevitt JT, Campbell CL, Miller CS. Oral fluids that detect cardiovascular disease biomarkers. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 114:207-14. [PMID: 22769406 DOI: 10.1016/j.oooo.2012.03.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 03/01/2012] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The aim of this study was to determine the utility of oral fluids for assessment of coronary and cardiovascular (CV) health. STUDY DESIGN Twenty-nine patients with preexisting CV disease underwent an invasive cardiac procedure (alcohol septal ablation or percutaneous coronary intervention) and provided unstimulated whole saliva (UWS), sublingual swabs (LS), gingival swabs (GS) and serum at 0, 8, 16, 24, and 48 hours. Concentrations of 13 relevant biomarkers were determined and correlated with levels in serum and the oral fluids. RESULTS Concentrations of the majority of biomarkers were higher in UWS than in LS and GS. Coronary and CV disease biomarkers in UWS correlated better with serum than with LS and GS based on group status and measures of time effect. Seven biomarkers demonstrated time effect changes consistent with serum biomarkers, including C-reactive protein and troponin I. CONCLUSIONS Changes in serum biomarker profiles are reflected in oral fluids suggesting that oral fluid biomarkers could aid in the assessment of cardiac ischemia/necrosis.
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Affiliation(s)
- Joseph D Foley
- Department of Internal Medicine, Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, Kentucky 40536-0297, USA
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Ebersole JL, Schuster JL, Stevens J, Dawson D, Kryscio RJ, Lin Y, Thomas MV, Miller CS. Patterns of salivary analytes provide diagnostic capacity for distinguishing chronic adult periodontitis from health. J Clin Immunol 2013; 33:271-9. [PMID: 22926406 PMCID: PMC3788639 DOI: 10.1007/s10875-012-9771-3] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 08/14/2012] [Indexed: 11/27/2022]
Abstract
Salivary biomarker discovery requires identification of analytes with high discriminatory capacity to distinguish disease from health, including day-to-day variations that occur in analyte levels. In this study, seven biomarkers associated with inflammatory and tissue destructive processes of periodontal disease were investigated. In a prospective cohort study design, analyte expression levels were determined in unstimulated whole saliva samples collected on multiple occasions from 30 healthy adults (i.e., orally and systemically) and 50 chronic adult periodontitis patients. Salivary levels of IL-1β, IL-6, MMP-8, and albumin were significantly elevated (5.4 to 12.6X) and levels of IFNα were consistently lower (8.7X) in periodontitis patients compared with the daily variation observed in healthy adults. ROC analyses of IL-1β, IL-6 and MMP-8 yielded areas under the curves of 0.963-0.984 for discriminating periodontitis from health. These results demonstrate that levels of salivary bioanalytes of patients who have periodontitis are uniquely different from normal levels found in healthy subjects, and a panel consisting of IL-1β, MMP-8 and IL-6 shows particular diagnostic potential.
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Affiliation(s)
- Jeffrey L Ebersole
- Center for Oral Health Research, University of Kentucky, Lexington, KY 40536-0297, USA.
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Trueba AF, Rosenfield D, Oberdörster E, Vogel PD, Ritz T. The effect of academic exam stress on mucosal and cellular airway immune markers among healthy and allergic individuals. Psychophysiology 2012; 50:5-14. [PMID: 23157618 DOI: 10.1111/j.1469-8986.2012.01487.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Accepted: 09/20/2012] [Indexed: 12/24/2022]
Abstract
Research suggests that psychological stress can exacerbate allergies, but relatively little is known about the effect of stress on mucosal immune processes central to allergic pathophysiology. In this study, we quantified vascular endothelial growth factor (VEGF), interferon gamma (IFN-γ), and interleukin-4 concentrations in saliva (S) and exhaled breath condensate (EBC) during final exams and at midsemester among 23 healthy and 21 allergic rhinitis individuals. IFN-γs decreased during exams for both groups while VEGF(EBC) increased (and increases in VEGFs were a trend). Elevated negative affect ratings predicted higher VEGF(EBC) in allergic individuals. IFN-γ(EBC) increased in healthy individuals early during exams and then decreased, while allergic individuals showed a decrease in IFN-γ(EBC) throughout final exams. These findings suggest that psychological stress can suppress cellular immune function among allergic individuals while increasing VEGF.
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Affiliation(s)
- Ana F Trueba
- Department of Psychology, Southern Methodist University, Dallas, Texas 75206, USA.
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Zubairy YF, Patil VW, Benjamin T, Jangam D, Bijle MNA, Patil S. Effect of methylxanthines (coffee/tea consumers) on oral precancer and oral cancer patients with smoking and smokeless tobacco habits. J Contemp Dent Pract 2012; 13:745-758. [PMID: 23403995 DOI: 10.5005/jp-journals-10024-1221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AIM To study, whether the consumption of regular tea/coffee (methylxanthines) increases the risk of oral cancer in patients with smoking and smokeless tobacco habits. MATERIALS AND METHODS This study was conducted on a total of 90 oral cancer and precancerous patients, from western Maharashtra (India) males in the age group of 20 to 45 years who were with smoking and smokeless tobacco habits; also regular tea/coffee consumers were subjected to biochemical parameters such as aspartate transaminase (AST) and alanine transaminase (ALT) from saliva and serum of patients with oral precancer (submucous fibrosis, leukoplakia) and oral cancer patients and compared with 90-age and sex-matched controls. Individuals consent was taken to measure their biochemical parameters, by using Hafkenscheid method in whole saliva and serum. Statistical analysis of variance (ANOVA) with Tukey's correction for multiple group comparisons was performed using Student t-test. RESULTS Results show, that a statistically significant increase in value (p < 0.05) in ALT, AST in both saliva and serum was observed in precancerous and oral cancer patients among the study group as compared to the control group. CONCLUSION In the present study, there was increase in the levels of ALT, AST enzymes in both saliva and serum levels in the study group as compared to the control group which was statistically significant (p < 0.05) suggesting that long-term exposure of methylxanthines results in impairment of salivary gland antioxidant system which may affect the anticarcinogenic action of saliva. CLINICAL SIGNIFICANCE Oral fluids may be utilized effectively to study the variations in the biochemical constituents of saliva of leukoplakia, submucous fibrosis and oral cancer patients.
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Affiliation(s)
- Yasmeen F Zubairy
- Department of Biochemistry, Grant Medical College and Sir JJ Groups of Hospital, Mumbai, Maharashtra, India
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Osman TA, Costea DE, Johannessen AC. The use of salivary cytokines as a screening tool for oral squamous cell carcinoma : A review of the literature. J Oral Maxillofac Pathol 2012; 16:256-61. [PMID: 22923900 PMCID: PMC3424944 DOI: 10.4103/0973-029x.99083] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Oral squamous cell carcinoma (OSCC) is the most common type of head and neck cancer. The 5-year survival rate has remained below 50% over the last two decades, and new tools for early diagnosis are needed. Saliva has been used for diagnosis of several systemic diseases, and its use for diagnosis of OSCC has been sought extensively. Among the many salivary analytes for diagnosis of OSCC, accumulating evidences indicate the possibility of using salivary cytokines. Overproduction of proinflammatory, proangiogenic cytokines by OSCC cells has been reported, and their role in tumor progression and angiogenesis is well established. However, many inflammatory conditions and immunological diseases could affect the levels of cytokines in serum and saliva. This article has reviewed publications in this matter, and some strengths and weaknesses have been pointed out. Conclusively, large-scale investigations are required for validation of the use of salivary cytokines for diagnosis of OSCC, with consideration to the influential role of periodontal inflammation in their levels.
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Affiliation(s)
- Tarig A Osman
- Section of Pathology, The Gade Institute, University of Bergen, Bergen, Norway
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Zhang A, Sun H, Wang X. Saliva Metabolomics Opens Door to Biomarker Discovery, Disease Diagnosis, and Treatment. Appl Biochem Biotechnol 2012; 168:1718-27. [DOI: 10.1007/s12010-012-9891-5] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Accepted: 08/31/2012] [Indexed: 12/31/2022]
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Maron JL, Dietz JA, Parkin C, Johnson KL, Bianchi DW. Performing discovery-driven neonatal research by transcriptomic analysis of routinely discarded biofluids. J Matern Fetal Neonatal Med 2012; 25:2507-11. [PMID: 22920923 DOI: 10.3109/14767058.2012.717126] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
OBJECTIVE To perform discovery-driven research on the neonatal salivary and cord blood transcriptomes. METHODS Two separate cohorts of infants were enrolled in this study. In one, cord blood (n = 10) and in the other, saliva samples (n = 10) were collected at term gestation. Total RNA was extracted, amplified and hybridized onto Affymetrix HG U133a gene expression microarrays. Following normalization, genes expressed in the highest quintile (≥ 80%) across all subjects in each biofluid were analyzed with Ingenuity Pathway Analysis. Over-represented pathways relating to organ specific development and physiological functions in the newborn were explored. RESULTS There were 303 genes in neonatal saliva and 282 genes in umbilical cord blood that met statistical criteria. Of these, 114 were common to both biofluids. Pathway analyses revealed the important roles of redox balance, cellular proliferation, and smooth muscle relaxation. In blood, hematopoiesis and immune response pathways predominated. In saliva, pathways associated with the gastrointestinal system were highlighted. CONCLUSIONS Neonatal cord blood and saliva provide a wealth of transcriptomic information. These normally discarded biofluids should be considered an important source of real-time gene expression data that may elucidate key pathways in neonatal physiology and pathology.
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Affiliation(s)
- Jill L Maron
- Department of Pediatrics, The Floating Hospital for Children at Tufts Medical Center, Boston, MA 02111, USA.
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Development of transcriptomic biomarker signature in human saliva to detect lung cancer. Cell Mol Life Sci 2012; 69:3341-3350. [PMID: 22689099 DOI: 10.1007/s00018-012-1027-0] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 04/23/2012] [Accepted: 05/07/2012] [Indexed: 01/02/2023]
Abstract
Lung cancer is the leading cause of cancer death for both men and women worldwide. Since most of the symptoms found for lung cancer are nonspecific, diagnosis is mostly done at late and progressed stage with the consecutive poor therapy outcome. Effective early detection techniques are sorely needed. The emerging field of salivary diagnostics could provide scientifically credible, easy-to-use, non-invasive and cost-effective detection methods. Recent advances have allowed us to develop discriminatory salivary biomarkers for a variety of diseases from oral to systematic diseases. In this study, salivary transcriptomes of lung cancer patients were profiled and led to the discovery and pre-validation of seven highly discriminatory transcriptomic salivary biomarkers (BRAF, CCNI, EGRF, FGF19, FRS2, GREB1, and LZTS1). The logistic regression model combining five of the mRNA biomarkers (CCNI, EGFR, FGF19, FRS2, and GREB1) could differentiate lung cancer patients from normal control subjects, yielding AUC value of 0.925 with 93.75 % sensitivity and 82.81 % specificity in the pre-validation sample set. These salivary mRNA biomarkers possess the discriminatory power for the detection of lung cancer. This report provides the proof of concept of salivary biomarkers for the non-invasive detection of the systematic disease. These results poised the salivary biomarkers for the initiation of a multi-center validation in a definitive clinical context.
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Ruhl S. The scientific exploration of saliva in the post-proteomic era: from database back to basic function. Expert Rev Proteomics 2012; 9:85-96. [PMID: 22292826 DOI: 10.1586/epr.11.80] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The proteome of human saliva can be considered as being essentially completed. Diagnostic markers for a number of diseases have been identified among salivary proteins and peptides, taking advantage of saliva as an easy-to-obtain biological fluid. Yet, the majority of disease markers identified so far are serum components and not intrinsic proteins produced by the salivary glands. Furthermore, despite the fact that saliva is essential for protecting the oral integuments and dentition, little progress has been made in finding risk predictors in the salivary proteome for dental caries or periodontal disease. Since salivary proteins, and in particular the attached glycans, play an important role in interactions with the microbial world, the salivary glycoproteome and other post-translational modifications of salivary proteins need to be studied. Risk markers for microbial diseases, including dental caries, are likely to be discovered among the highly glycosylated major protein species in saliva. This review will attempt to raise new ideas and also point to under-researched areas that may hold promise for future applicability in oral diagnostics and prediction of oral disease.
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Affiliation(s)
- Stefan Ruhl
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, The State University of New York, Buffalo, NY 14214, USA.
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Xiao H, Wong DT. Method development for proteome stabilization in human saliva. Anal Chim Acta 2012; 722:63-9. [DOI: 10.1016/j.aca.2012.02.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 01/18/2012] [Accepted: 02/12/2012] [Indexed: 12/22/2022]
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Xiao H, Wong DT. Proteomic analysis of microvesicles in human saliva by gel electrophoresis with liquid chromatography-mass spectrometry. Anal Chim Acta 2012; 723:61-7. [DOI: 10.1016/j.aca.2012.02.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 02/07/2012] [Accepted: 02/11/2012] [Indexed: 01/13/2023]
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Dietz JA, Johnson KL, Wick HC, Bianchi DW, Maron JL. Optimal techniques for mRNA extraction from neonatal salivary supernatant. Neonatology 2012; 101:55-60. [PMID: 21791940 PMCID: PMC3151004 DOI: 10.1159/000328026] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Accepted: 03/31/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND Gene expression profiling of the salivary supernatant is emerging as a new and important source of real-time, systemic, biological information. However, existing technologies prevent RNA extraction of small quantities found in neonatal salivary supernatant. OBJECTIVE The aim of this study was to develop techniques to enhance extraction of cell-free RNA from neonatal salivary supernatant. METHODS Two saliva samples (10-100 μl) were serially collected from newborns (36-41 weeks' gestation) (n = 13) and stabilized. Total RNA was extracted from salivary supernatant with the use of two modified extraction techniques: Qiagen RNAprotect® Saliva Mini Kit (method 1) and the QIAamp Viral RNA Mini Kit (method 2). Quantitative RT-PCR amplification for GAPDH was performed on extracted salivary samples. Statistical analyses were performed on mean threshold cycle (Ct) levels to compare RNA yield from each protocol. Paired microarray analyses were made between neonatal whole saliva and supernatant (n = 3) to discern gene expression differences between these biolayers. RESULTS mRNA was successfully extracted and amplified from all salivary supernatant samples. Extraction with method 2 yielded more RNA than with method 1 (p = 0.008). There was a 7.5% discordance between paired gene expression analyses for whole saliva and supernatant. Genes that were statistically significantly upregulated in supernatant highlighted 16 distinct biological functions not seen in whole saliva. Conversely, only two biological functions were unique to whole saliva. CONCLUSION Neonatal cell-free salivary supernatant mRNA may be readily extracted and utilized on downstream applications. These technical enhancements allow for further exploration of the diagnostic potential of the neonatal salivary transcriptome.
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Affiliation(s)
- Jessica A Dietz
- Division of Newborn Medicine, Department of Pediatrics, The Floating Hospital for Children at Tufts Medical Center, Medford, MA, USA
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