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Nivet C, Custovic I, Avoscan L, Bikker FJ, Bonnotte A, Bourillot E, Briand L, Brignot H, Heydel JM, Herrmann N, Lelièvre M, Lesniewska E, Neiers F, Piétrement O, Schwartz M, Belloir C, Canon F. Development of New Models of Oral Mucosa to Investigate the Impact of the Structure of Transmembrane Mucin-1 on the Mucosal Pellicle Formation and Its Physicochemical Properties. Biomedicines 2024; 12:139. [PMID: 38255244 PMCID: PMC10812975 DOI: 10.3390/biomedicines12010139] [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: 08/03/2023] [Revised: 12/21/2023] [Accepted: 12/25/2023] [Indexed: 01/24/2024] Open
Abstract
The mucosal pellicle (MP) is a biological film protecting the oral mucosa. It is composed of bounded salivary proteins and transmembrane mucin MUC1 expressed by oral epithelial cells. Previous research indicates that MUC1 expression enhances the binding of the main salivary protein forming the MP, MUC5B. This study investigated the influence of MUC1 structure on MP formation. A TR146 cell line, which does not express MUC1 natively, was stably transfected with genes coding for three MUC1 isoforms differing in the structure of the two main extracellular domains: the VNTR domain, exhibiting a variable number of tandem repeats, and the SEA domain, maintaining the two bound subunits of MUC1. Semi-quantification of MUC1 using dot blot chemiluminescence showed comparable expression levels in all transfected cell lines. Semi-quantification of MUC5B by immunostaining after incubation with saliva revealed that MUC1 expression significantly increased MUC5B adsorption. Neither the VNTR domain nor the SEA domain was influenced MUC5B anchoring, suggesting the key role of the MUC1 N-terminal domain. AFM-IR nanospectroscopy revealed discernible shifts indicative of changes in the chemical properties at the cell surface due to the expression of the MUC1 isoform. Furthermore, the observed chemical shifts suggest the involvement of hydrophobic effects in the interaction between MUC1 and salivary proteins.
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Affiliation(s)
- Clément Nivet
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Irma Custovic
- Institut Carnot de Bourgogne (ICB), UMR CNRS 6303, University of Bourgogne, 21000 Dijon, France; (I.C.); (E.B.); (E.L.); (O.P.)
| | - Laure Avoscan
- Agroécologie, UMR1347 INRAE, ERL CNRS 6300, DimaCell Platform, Center of Microscopy INRAE, University of Bourgogne, 21000 Dijon, France; (L.A.); (A.B.)
| | - Floris J. Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, 1081 LA Amsterdam, The Netherlands;
| | - Aline Bonnotte
- Agroécologie, UMR1347 INRAE, ERL CNRS 6300, DimaCell Platform, Center of Microscopy INRAE, University of Bourgogne, 21000 Dijon, France; (L.A.); (A.B.)
| | - Eric Bourillot
- Institut Carnot de Bourgogne (ICB), UMR CNRS 6303, University of Bourgogne, 21000 Dijon, France; (I.C.); (E.B.); (E.L.); (O.P.)
| | - Loïc Briand
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Hélène Brignot
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Jean-Marie Heydel
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Noémie Herrmann
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Mélanie Lelièvre
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Eric Lesniewska
- Institut Carnot de Bourgogne (ICB), UMR CNRS 6303, University of Bourgogne, 21000 Dijon, France; (I.C.); (E.B.); (E.L.); (O.P.)
| | - Fabrice Neiers
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Olivier Piétrement
- Institut Carnot de Bourgogne (ICB), UMR CNRS 6303, University of Bourgogne, 21000 Dijon, France; (I.C.); (E.B.); (E.L.); (O.P.)
| | - Mathieu Schwartz
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Christine Belloir
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
| | - Francis Canon
- Center for Taste and Feeding Behaviour (CSGA), UMR1324 INRAE, Institut Agro Dijon, Université de Bourgogne, UMR6265 CNRS, 21000 Dijon, France; (C.N.); (L.B.); (H.B.); (J.-M.H.); (N.H.); (M.L.); (F.N.); (M.S.); (C.B.)
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Mukaibo T, Yamada M. Evaluation of Rheological Properties of Saliva by Determining the Spinnbarkeit. Methods Mol Biol 2024; 2763:395-401. [PMID: 38347429 DOI: 10.1007/978-1-0716-3670-1_34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Saliva is crucial to maintaining oral health and facilitating chewing, swallowing, and speech functions. Decreased saliva secretion, known as hyposalivation, impairs these functions and increases the risk of dental caries and other infectious diseases in the oral cavity.Saliva exhibits various rheological properties, with mucin being a factor in determining these properties. Alterations in these properties can also affect the sensation of dry mouth. In this article, we focus on the spinnbarkeit of saliva using the Neva Meter instrument and provide a methodology for fully understanding the appropriate conditions for its use.
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Affiliation(s)
- Taro Mukaibo
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan.
| | - Mikio Yamada
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
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Rudisch DM, Krasko MN, Burdick R, Broadfoot CK, Rogus-Pulia N, Ciucci MR. Dysphagia in Parkinson Disease: Part I - Pathophysiology and Diagnostic Practices. CURRENT PHYSICAL MEDICINE AND REHABILITATION REPORTS 2023; 11:176-187. [PMID: 37608845 PMCID: PMC10441627 DOI: 10.1007/s40141-023-00392-9] [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] [Accepted: 03/06/2023] [Indexed: 03/30/2023]
Abstract
Purpose of Review Dysphagia affects the majority of individuals with Parkinson disease (PD) and is not typically diagnosed until later in disease progression. This review will cover the current understanding of PD pathophysiology, and provides an overview of dysphagia in PD including diagnostic practices, gaps in knowledge, and future directions. Recent Findings Many non-motor and other motor signs of PD appear in the prodrome prior to the manifestation of hall- mark signs and diagnosis. While dysphagia often presents already in the prodrome, it is not routinely addressed in standard neurology examinations. Summary Dysphagia in PD can result in compromised efficiency and safety of swallowing, which significantly contributes to malnutrition and dehydration, decrease quality of life, and increase mortality. The heterogeneous clinical presentation of PD complicates diagnostic procedures which often leads to delayed treatment. Research has advanced our knowledge of mechanisms underlying PD, but dysphagia is still largely understudied, especially in the prodromal stage.
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Affiliation(s)
- Denis Michael Rudisch
- Department of Surgery, Division of Otolaryngology-Head & Neck Surgery, University of Wisconsin-Madison, 1300 University Ave, Madison, WI 53706, USA
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, 1975 Willow Drive, Madison, WI 53706, USA
| | - Maryann N Krasko
- Department of Surgery, Division of Otolaryngology-Head & Neck Surgery, University of Wisconsin-Madison, 1300 University Ave, Madison, WI 53706, USA
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, 1975 Willow Drive, Madison, WI 53706, USA
| | - Ryan Burdick
- Department of Medicine, Division of Geriatrics and Gerontology, School of Medicine and Public Health, University of Wisconsin-Madison, 1685 Highland Avenue, Madison, WI 53705, USA
- Geriatric Research Education and Clinical Center, William S. Middleton Memorial Veterans Hospital, 2500 Overlook Terrace, Madison, WI 53705, USA
| | - Courtney K Broadfoot
- Department of Medicine, Division of Geriatrics and Gerontology, School of Medicine and Public Health, University of Wisconsin-Madison, 1685 Highland Avenue, Madison, WI 53705, USA
- Geriatric Research Education and Clinical Center, William S. Middleton Memorial Veterans Hospital, 2500 Overlook Terrace, Madison, WI 53705, USA
| | - Nicole Rogus-Pulia
- Department of Medicine, Division of Geriatrics and Gerontology, School of Medicine and Public Health, University of Wisconsin-Madison, 1685 Highland Avenue, Madison, WI 53705, USA
- Geriatric Research Education and Clinical Center, William S. Middleton Memorial Veterans Hospital, 2500 Overlook Terrace, Madison, WI 53705, USA
| | - Michelle R Ciucci
- Department of Surgery, Division of Otolaryngology-Head & Neck Surgery, University of Wisconsin-Madison, 1300 University Ave, Madison, WI 53706, USA
- Department of Communication Sciences and Disorders, University of Wisconsin-Madison, 1975 Willow Drive, Madison, WI 53706, USA
- Neuroscience Training Program, University of Wisconsin-Madison, 1111 Highland Ave, Madison, WI 53705, USA
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Salivary film thickness and MUC5B levels at various intra-oral surfaces. Clin Oral Investig 2023; 27:859-869. [PMID: 35941397 PMCID: PMC9889518 DOI: 10.1007/s00784-022-04626-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 07/13/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVES In this study, we investigated the salivary film thickness and the MUC5B levels at various intra-oral locations in healthy volunteers, with a focus on the palate. Besides, measurements of the palatal surface area were included to explore the possible relationships between the palatal surface area and the palatal salivary film and MUC5B levels. MATERIALS AND METHODS The salivary film thickness was determined using filter strips, which were pressed to the mucosal surfaces of five different intra-oral locations; conductance was then analysed using a Periotron. After elution of the strips, the MUC5B levels at various intra-oral locations were determined using ELISA. The palatal surface area was measured using an intra-oral scanner. The surface area was subsequently calculated using the software. RESULTS The anterior tongue had the thickest salivary film and also the highest levels of MUC5B, while the anterior palate had the thinnest salivary film and lowest MUC5B levels. There was no association between the palatal surface area and the salivary film thickness of the palate. CONCLUSION The salivary film and MUC5B levels are unequally distributed over the intra-oral regions of the soft tissues. The lack of association between the palatal surface area and the salivary film thickness indicates that a larger surface area is not associated with a relative thinner palatal salivary film. CLINICAL RELEVANCE The results of the current study increase our understanding of saliva distribution in the oral cavity and could be used as reference values for future studies.
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A review on the role of salivary MUC5B in oral health. J Oral Biosci 2022; 64:392-399. [DOI: 10.1016/j.job.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/20/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022]
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Assy Z, Jager DHJ, Brand HS, Bikker FJ. Correlations of palatal surface area with anthropometric dimensions of the head and face. SURGICAL AND RADIOLOGIC ANATOMY : SRA 2022; 44:1261-1267. [PMID: 36056237 PMCID: PMC9492607 DOI: 10.1007/s00276-022-03008-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/14/2022] [Indexed: 11/26/2022]
Abstract
Purpose Saliva distribution over the palatal surface plays an important role in the perception of dry mouth. It is envisaged that non-invasive estimation of the palatal surface area by anthropometric measurements of the head and face can be useful in the assessment of oral dryness. For this purpose, the relationship between the palatal surface area and anthropometric measurements of the head and face was investigated. Methods The palatal surface was measured in 51 healthy volunteers using an intra-oral scanner. The distances between anthropometric landmarks of the head and face were determined using an anatomical sliding caliper. Correlations between the palatal surface area and the anthropometric landmarks were investigated. Results The median palatal surface area for the total study population was found to be 2120.6 mm2. Virtually, all anthropometric measurements showed significant differences between females and males. Various head and face measurements had a significant correlation with the palatal surface area. However, these correlations disappeared when the participants were stratified based on their sex, with the exception of mandibular length and palatal width in females. Conclusion The surface area of the palate correlates with nearly all anthropometric measurements of the head and face included in this study. Yet, the clinical applicability seems limited to females.
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Affiliation(s)
- Z Assy
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands.
| | - D H J Jager
- Department of Maxillofacial Surgery and Oral Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Amsterdam Institute for Infection and Immunity Amsterdam, Amsterdam, The Netherlands
| | - H S Brand
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| | - F J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
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Sundberg LR, Rantanen N, de Freitas Almeida GM. Mucosal Environment Induces Phage Susceptibility in Streptococcus mutans. PHAGE (NEW ROCHELLE, N.Y.) 2022; 3:128-135. [PMID: 36793554 PMCID: PMC9917281 DOI: 10.1089/phage.2022.0021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Pathogenic bacteria are attracted toward mucosa, as it is their way of entry into the body. However, we know surprisingly little about the phage-bacterium interactions in the mucosal environment. Here, we explored the effect of the mucosal environment on growth characteristics and phage-bacterium interactions in Streptococcus mutans, a causative agent of dental caries. We found that although mucin supplementation increased bacterial growth and survival, it decreased S. mutans biofilm formation. More importantly, the presence of mucin had a significant effect on S. mutans phage susceptibility. In two experiments done in Brain Heart Infusion Broth, phage M102 replication was detected only with 0.2% mucin supplementation. In 0.1 × Tryptic Soy Broth, 0.5% mucin supplementation led to a 4-log increase in phage titers compared with the control. These results suggest that the mucosal environment can have a major role in the growth, phage sensitivity, and phage resistance of S. mutans, and underline the importance of understanding the effect of mucosal environment on phage-bacterium interactions.
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Affiliation(s)
- Lotta-Riina Sundberg
- Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Noora Rantanen
- Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Gabriel Magno de Freitas Almeida
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway
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Bono D, Belyk M, Longo MR, Dick F. Beyond language: The unspoken sensory-motor representation of the tongue in non-primates, non-human and human primates. Neurosci Biobehav Rev 2022; 139:104730. [PMID: 35691470 DOI: 10.1016/j.neubiorev.2022.104730] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 04/06/2022] [Accepted: 06/06/2022] [Indexed: 11/28/2022]
Abstract
The English idiom "on the tip of my tongue" commonly acknowledges that something is known, but it cannot be immediately brought to mind. This phrase accurately describes sensorimotor functions of the tongue, which are fundamental for many tongue-related behaviors (e.g., speech), but often neglected by scientific research. Here, we review a wide range of studies conducted on non-primates, non-human and human primates with the aim of providing a comprehensive description of the cortical representation of the tongue's somatosensory inputs and motor outputs across different phylogenetic domains. First, we summarize how the properties of passive non-noxious mechanical stimuli are encoded in the putative somatosensory tongue area, which has a conserved location in the ventral portion of the somatosensory cortex across mammals. Second, we review how complex self-generated actions involving the tongue are represented in more anterior regions of the putative somato-motor tongue area. Finally, we describe multisensory response properties of the primate and non-primate tongue area by also defining how the cytoarchitecture of this area is affected by experience and deafferentation.
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Affiliation(s)
- Davide Bono
- Birkbeck/UCL Centre for Neuroimaging, 26 Bedford Way, London WC1H0AP, UK; Department of Experimental Psychology, UCL Division of Psychology and Language Sciences, 26 Bedford Way, London WC1H0AP, UK.
| | - Michel Belyk
- Department of Speech, Hearing, and Phonetic Sciences, UCL Division of Psychology and Language Sciences, 2 Wakefield Street, London WC1N 1PJ, UK
| | - Matthew R Longo
- Department of Psychological Sciences, Birkbeck College, University of London, Malet St, London WC1E7HX, UK
| | - Frederic Dick
- Birkbeck/UCL Centre for Neuroimaging, 26 Bedford Way, London WC1H0AP, UK; Department of Experimental Psychology, UCL Division of Psychology and Language Sciences, 26 Bedford Way, London WC1H0AP, UK; Department of Psychological Sciences, Birkbeck College, University of London, Malet St, London WC1E7HX, UK.
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Yamamoto K, Hiraishi M, Haneoka M, Fujinaka H, Yano Y. Protease inhibitor concentrations in the saliva of individuals experiencing oral dryness. BMC Oral Health 2021; 21:661. [PMID: 34930236 PMCID: PMC8686663 DOI: 10.1186/s12903-021-02024-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 12/12/2021] [Indexed: 11/10/2022] Open
Abstract
Background Oral dryness is a common symptom that may interfere with swallowing, chewing, and taste. The most common reason for oral dryness is hyposalivation. Some individuals experiencing oral dryness do not have hyposalivation, however, and the reverse is also true. Here, we focused on healthy individuals with a lower salivary flow rate and evaluated the relationship between the perception of oral dryness and salivary parameters to clarify the cause underlying the perception of oral dryness. Methods A total of 59 participants were divided into 2 groups with a lower or higher salivary flow rate according to the median salivary flow rate. In participants with a lower salivary flow rate, we assessed salivary bacterial counts, protease activities, protein concentrations, oral parameters, and the subjective perception of oral dryness. Results Protease activities and concentrations of protease inhibitors such as cystatin-D and cystatin-SA in the saliva of participants experiencing oral dryness were significantly higher and lower, respectively, than in those not experiencing oral dryness, even though no difference in the salivary flow rate was detected. Salivary cystatin-D and cystatin-SA concentrations correlated negatively with salivary protease activities. Conclusions The composition of salivary protease inhibitors and increased protease activities affect the subjective perception of oral dryness.
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Affiliation(s)
- Kenkichi Yamamoto
- Personal Health Care Products Research Laboratories, Kao Corporation, 2-1-3 Bunka, Sumida-ku, Tokyo, 131-8501, Japan.
| | - Makiko Hiraishi
- Personal Health Care Products Research Laboratories, Kao Corporation, 2-1-3 Bunka, Sumida-ku, Tokyo, 131-8501, Japan
| | - Mai Haneoka
- Analytical Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Hidetake Fujinaka
- Personal Health Care Products Research Laboratories, Kao Corporation, 2-1-3 Bunka, Sumida-ku, Tokyo, 131-8501, Japan
| | - Yoshitaka Yano
- Personal Health Care Products Research Laboratories, Kao Corporation, 2-1-3 Bunka, Sumida-ku, Tokyo, 131-8501, Japan
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Assy Z, Bikker FJ, Picauly O, Brand HS. The association between oral dryness and use of dry-mouth interventions in Sjögren's syndrome patients. Clin Oral Investig 2021; 26:1465-1475. [PMID: 34374853 PMCID: PMC8816756 DOI: 10.1007/s00784-021-04120-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Accepted: 07/30/2021] [Indexed: 12/20/2022]
Abstract
Objective Sjögren’s syndrome patients use different dry-mouth interventions for the relieve of their oral dryness. Recently, it was shown that patients with dry-mouth complaints have regional differences in perceived intra-oral dryness. Therefore, the aim of the present study was to investigate whether the use of dry-mouth interventions is related to the perceived regional oral dryness. Materials and methods A cross-sectional study was performed among Sjögren’s patients. Volunteers could anonymously administer various questionnaires, including the Regional Oral Dryness Inventory (RODI), Xerostomia Inventory (XI), Bother Index (BI) and a list of dry-mouth interventions. Results Sjögren’s syndrome patients use a wide variety for the relieve of oral dryness. “Drinking water’’ and “moistening the lips’’ were used most frequently. Dry-mouth interventions, “drinking water’’, “rinsing of the mouth”, and “drinking small volumes” had significant associations with the RODI-scores of the posterior palate, and anterior and posterior tongue, respectively. On the other hand, “using mouth gel’’ had a significant association with the RODI-scores of the inside cheeks. Conclusion Sjögren’s syndrome patients are more likely to use mouth gels when their inside cheeks were experienced as most dry, while they drank water, rinsed their mouth or drank small volumes if the posterior palate, and anterior and posterior tongue were considered as dry. It can be concluded that intra-oral dryness affects dry-mouth perception and thereby also the use of the various dry-mouth interventions. Clinical relevance The therapeutic choice of dry-mouth interventions by Sjögren’s syndrome patients seems to some extent to be related to dryness at specific intra-oral regions.
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Affiliation(s)
- Z Assy
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan, 3004, Amsterdam, 1081 LA, the Netherlands.
| | - F J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan, 3004, Amsterdam, 1081 LA, the Netherlands
| | - O Picauly
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan, 3004, Amsterdam, 1081 LA, the Netherlands
| | - H S Brand
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Gustav Mahlerlaan, 3004, Amsterdam, 1081 LA, the Netherlands
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Is a neuropathic mechanism involved in the perception of oral dryness? Arch Oral Biol 2021; 130:105213. [PMID: 34339966 DOI: 10.1016/j.archoralbio.2021.105213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 11/20/2022]
Abstract
OBJECTIVES The aim of the present study was to review the existing phenomena which could affect subjective oral dryness and to consider the possibility that neural processing is involved in the perception of oral dryness. DESIGN A comprehensive review of scientific literatures relevant to contributing factors of dry mouth symptoms including salivary parameters related with oral dryness and role of neural mechanisms in perception of dry mouth symptoms was conducted. RESULTS Several previous reports suggested the possibility of neural processing mechanisms in perception of oral dryness. The decreased pain threshold in the oral cavity of rats with dry tongue and complaints of subjective oral dryness in patients with burning mouth syndrome, of which lacked an actual decrease in salivary output and mucosal wetness, could support this idea. Sensory changes in the oral mucosa and oral dryness may have a bi-directional influence that patients with oral dryness would be more subject to neuropathic pain in the oral mucosa, and those with neuropathic pain in the oral cavity could have complaints associated with higher levels of dry mouth symptoms. CONCLUSION A bi-directional influence between sensory change in the oral mucosa and subjective oral dryness could be assumed. We suggest the administration of neuropathic pain medications for controlling subjective oral dryness in patients without objective sign of hyposalivation.
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Mucoadhesive Delivery System: A Smart Way to Improve Bioavailability of Nutraceuticals. Foods 2021; 10:foods10061362. [PMID: 34208328 PMCID: PMC8231213 DOI: 10.3390/foods10061362] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 02/07/2023] Open
Abstract
The conventional oral administration of many nutraceuticals exhibits poor oral bioavailability due to the harsh gastric conditions and first-pass metabolism. Oral mucosa has been recognized as a potential site for the delivery of therapeutic compounds. The mucoadhesive formulation can adhere to the mucosal membrane through various interaction mechanisms and enhance the retention and permeability of bioactive compounds. Absorption of bioactive compounds from the mucosa can improve bioavailability, as this route bypasses the hepatic first-pass metabolism and transit through the gastrointestinal tract. The mucosal administration is convenient, simple to access, and reported for increasing the bioactive concentration in plasma. Many mucoadhesive polymers, emulsifiers, thickeners used for the pharmaceutical formulation are accepted in the food sector. Introducing mucoadhesive formulations specific to the nutraceutical sector will be a game-changer as we are still looking for different ways to improve the bioavailability of many bioactive compounds. This article describes the overview of buccal mucosa, the concept of mucoadhesion and related theories, and different techniques of mucoadhesive formulations. Finally, the classification of mucoadhesive polymers and the mucoadhesive systems designed for the effective delivery of bioactive compounds are presented.
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Mucin O-glycans suppress quorum-sensing pathways and genetic transformation in Streptococcus mutans. Nat Microbiol 2021; 6:574-583. [PMID: 33737747 PMCID: PMC8811953 DOI: 10.1038/s41564-021-00876-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 02/03/2021] [Indexed: 01/31/2023]
Abstract
Mucus barriers accommodate trillions of microorganisms throughout the human body while preventing pathogenic colonization1. In the oral cavity, saliva containing the mucins MUC5B and MUC7 forms a pellicle that coats the soft tissue and teeth to prevent infection by oral pathogens, such as Streptococcus mutans2. Salivary mucin can interact directly with microorganisms through selective agglutinin activity and bacterial binding2-4, but the extent and basis of the protective functions of saliva are not well understood. Here, using an ex vivo saliva model, we identify that MUC5B is an inhibitor of microbial virulence. Specifically, we find that natively purified MUC5B downregulates the expression of quorum-sensing pathways activated by the competence stimulating peptide and the sigX-inducing peptide5. Furthermore, MUC5B prevents the acquisition of antimicrobial resistance through natural genetic transformation, a process that is activated through quorum sensing. Our data reveal that the effect of MUC5B is mediated by its associated O-linked glycans, which are potent suppressors of quorum sensing and genetic transformation, even when removed from the mucin backbone. Together, these results present mucin O-glycans as a host strategy for domesticating potentially pathogenic microorganisms without killing them.
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14
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Investigation of Changes in Saliva in Radiotherapy-Induced Head Neck Cancer Patients. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18041629. [PMID: 33572065 PMCID: PMC7914760 DOI: 10.3390/ijerph18041629] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/28/2021] [Accepted: 02/01/2021] [Indexed: 12/12/2022]
Abstract
The intact function of the salivary glands is of utmost importance for oral health. During radiotherapy in patients with head and neck tumors, the salivary glands can be damaged, causing the composition of saliva to change. This leads to xerostomia, which is a primary contributor to oral mucositis. Medications used for protective or palliative treatment often show poor efficacy as radiation-induced changes in the physico-chemical properties of saliva are not well understood. To improve treatment options, this study aimed to carefully examine unstimulated whole saliva of patients receiving radiation therapy and compare it with healthy unstimulated whole saliva. To this end, the pH, osmolality, electrical conductivity, buffer capacity, the whole protein and mucin concentrations, and the viscoelastic and adhesive properties were investigated. Moreover, hyaluronic acid was examined as a potential candidate for a saliva replacement fluid. The results showed that the pH of radiation-induced saliva shifted from neutral to acidic, the osmolality increased and the viscoelastic properties changed due to a disruption of the mucin network and a change in water secretion from the salivary glands. By adopting an aqueous 0.25% hyaluronic acid formulation regarding the lost properties, similar adhesion characteristics as in healthy, unstimulated saliva could be achieved.
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Differences in perceived intra-oral dryness in various dry-mouth patients as determined using the Regional Oral Dryness Inventory. Clin Oral Investig 2021; 25:4031-4043. [PMID: 33496869 PMCID: PMC8137633 DOI: 10.1007/s00784-020-03734-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 12/04/2020] [Indexed: 01/20/2023]
Abstract
Objectives Recently, it was shown that the Regional Oral Dryness Inventory (RODI) could determine differences in dry-mouth perception at different intra-oral locations. The main aim of this study was to determine whether the RODI might help to discriminate between various causes of oral dryness in dry-mouth patients. The second aim was to ascertain whether the RODI could become an additional diagnostic tool in dry-mouth patients. Materials and methods Data were collected retrospectively from patients who visited a specialized saliva clinic. Salivary flow rates, Xerostomia Inventory scores, and RODI scores were extracted from the medical records. Patients were stratified into subgroups according to their health status. Results Five hundred twenty-eight patients participated in this study (mean age of 59.6 ± 16.0 years; 68.4% female). Specific patient groups differed with regard to the region of the mouth they experienced as the most and least dry. The posterior palate was the area perceived as most dry by controls and Sjögren patients. In patients using limited or multiple medications, it was the anterior tongue. RODI scores also differed significantly among dry-mouth patient groups: whereas controls and patients using limited medication had the lowest RODI scores and experienced less intra-oral dryness, Sjögren patients had the highest RODI scores. Conclusion Our use of the RODI questionnaire showed that perceived intra-oral dryness differed between the various dry-mouth patients. Clinical relevance The RODI can be a valuable clinical diagnostic tool in dry-mouth diagnostics, in which it can be used to discriminate between the various causes of oral dryness in patients.
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Fusconi M, Candelori F, Weiss L, Riccio A, Priori R, Businaro R, Mastromanno L, Musy I, de Vincentiis M, Greco A. Qualitative mucin disorders in patients with primary Sjögren's syndrome: a literature review. Med Oral Patol Oral Cir Bucal 2021; 26:e71-e77. [PMID: 33247578 PMCID: PMC7806352 DOI: 10.4317/medoral.23996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 11/09/2020] [Indexed: 11/05/2022] Open
Abstract
Background It is a common opinion that Primary Sjögren Syndrome (pSS) damages the exocrine glands and determines the reduction of secreted saliva, some studies show that there are qualitative anomalies of the mucins produced in saliva, including MUC7, MUC5B, MUC1. The purpose of this study is to trace all the information useful to establish whether there is a qualitative or quantitative defect of the mucins in the pSS.
Material and Methods We reviewed the literature by looking for publications relevant to the topic in electronic databases. Sixteen articles met the search criteria. The studies were divided into two categories, those that studied the rheological characteristics of the saliva and those that studied the structural and / or metabolism modifications of the muciparous cells in the salivary glands.
Results in Patients with pSS, xerostomia and the reduction of salivary spinnbarkeit are only partially related to the reduction of the unstimulated salivary flow. In pSS, pathological alterations of mucins’ chemical-physical properties prevail as a cause of the clinical characteristics. Moreover, in pSS there are structural and metabolism changes in salivary glands’ muciparous cells.
Conclusions There is much evidence that supports the presence of qualitative alterations in the saliva’s rheological properties in Patients with pSS, and these are the main cause, more than the reduction of the unstimulated salivary flow, of the disease clinical characteristics - dry mouth and complications in the oral cavity. Therefore we propose to add to the classification criteria of pSS also a qualitative test of salivary glycoproteins. Key words:Primary Sjögren's syndrome, mucin, MUC7, MUC5B, MUC1, sulphate oligosaccharides.
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17
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Real time ultrasound assessment of contact progress between food gels and tongue mimicking surfaces during a compression. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.106099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Houghton JW, Carpenter G, Hans J, Pesaro M, Lynham S, Proctor G. Agonists of Orally Expressed TRP Channels Stimulate Salivary Secretion and Modify the Salivary Proteome. Mol Cell Proteomics 2020; 19:1664-1676. [PMID: 32651226 PMCID: PMC8014997 DOI: 10.1074/mcp.ra120.002174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Indexed: 11/06/2022] Open
Abstract
Natural compounds that can stimulate salivary secretion are of interest in developing treatments for xerostomia, the perception of a dry mouth, that affects between 10 and 30% of the adult and elderly population. Chemesthetic transient receptor potential (TRP) channels are expressed in the surface of the oral mucosa. The TRPV1 agonists capsaicin and piperine have been shown to increase salivary flow when introduced into the oral cavity but the sialogogic properties of other TRP channel agonists have not been investigated. In this study we have determined the influence of different TRP channel agonists on the flow and protein composition of saliva. Mouth rinsing with the TRPV1 agonist nonivamide or menthol, a TRPM8 agonist, increased whole mouth saliva (WMS) flow and total protein secretion compared with unstimulated saliva, the vehicle control mouth rinse or cinnamaldehyde, a TRPA1 agonist. Nonivamide also increased the flow of labial minor gland saliva but parotid saliva flow rate was not increased. The influence of TRP channel agonists on the composition and function of the salivary proteome was investigated using a multi-batch quantitative MS method novel to salivary proteomics. Inter-personal and inter-mouth rinse variation was observed in the secreted proteomes and, using a novel bioinformatics method, inter-day variation was identified with some of the mouth rinses. Significant changes in specific salivary proteins were identified after all mouth rinses. In the case of nonivamide, these changes were attributed to functional shifts in the WMS secreted, primarily the over representation of salivary and nonsalivary cystatins which was confirmed by immunoassay. This study provides new evidence of the impact of TRP channel agonists on the salivary proteome and the stimulation of salivary secretion by a TRPM8 channel agonist, which suggests that TRP channel agonists are potential candidates for developing treatments for sufferers of xerostomia.
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Affiliation(s)
- Jack William Houghton
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK; Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK.
| | - Guy Carpenter
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | | | | | - Steven Lynham
- Proteomics Facility, King's College London, London, UK
| | - Gordon Proctor
- Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
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19
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Abstract
Mucus is thought to serve as a protective coating on wet epithelial surfaces. Recent research has shown that glycans, which are branched sugar molecules found in mucin, a part of mucus, can prevent bacteria from communicating with each other and forming biofilms. This could hinder microbes from causing infections. The present editorial, focusing on a paper by Wheeler et al. [1], published in October 2019 in Nature Microbiology, describes how mucus can attenuate the virulence of Pseudomonas aeruginosa. In addition, streptococci and Candida albicans can be ‘tamed’ by mucin.
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Affiliation(s)
- Ingar Olsen
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
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20
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Assy Z, Jager DHJ, Mashhour E, Bikker FJ, Brand HS. Regional differences in perceived oral dryness as determined with a newly developed questionnaire, the Regional Oral Dryness Inventory. Clin Oral Investig 2020; 24:4051-4060. [PMID: 32382921 PMCID: PMC7544722 DOI: 10.1007/s00784-020-03276-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 04/04/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Several questionnaires, such as the internationally validated and frequently used Xerostomia Inventory (XI), have been developed to quantify the subjective feeling of a dry mouth. These questionnaires quantify the overall perception of dry mouth but lack the possibility to differentiate between various intra-oral regions. In this light, a novel questionnaire, the Regional Oral Dryness Inventory (RODI), which quantifies the severity of dryness at various locations in the mouth, was evaluated. MATERIALS AND METHODS A retrospective case report study was designed. Data were collected from patients who visited the saliva clinic for Special Care Dentistry in Amsterdam. Data, including the saliva secretion rates, RODI scores, the Xerostomia Inventory (XI) score, and Clinical Oral Dryness Score (CODS), were extracted from the electronic health record system Oase Dental. RESULTS A total of 337 patients participated in this study with an average age of 54 ± 17 years. The majority of the patients were female (68.5%). The perceived dryness as determined by the RODI was the highest for the posterior palate and the lowest for the floor of the mouth. The highest correlations were found between the corresponding regions in the RODI and regionally related individual items of the XI and CODS. CONCLUSION There is a significant difference in dry-mouth feeling at different intra-oral locations. CLINICAL RELEVANCE Regional evaluation of xerostomia with RODI might improve diagnosis of xerostomia by helping to discriminate between different potential causes of oral dryness in patients and for evaluating the efficacy of mouth-moistening products. RODI is highly accessible and easy to perform in dental practices during routine clinical assessment.
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Affiliation(s)
- Zainab Assy
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands.
| | - D H J Jager
- Department of Oral and Maxillofacial Surgery and Oral Pathology, Amsterdam UMC, Amsterdam, The Netherlands.,Center for Special Care Dentistry (Stichting Bijzondere Tandheelkunde), Amsterdam, Netherlands
| | - E Mashhour
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| | - F J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| | - H S Brand
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
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21
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Mantelet M, Restagno F, Souchon I, Mathieu V. Using ultrasound to characterize the tongue-food interface: An in vitro study examining the impact of surface roughness and lubrication. ULTRASONICS 2020; 103:106095. [PMID: 32044566 DOI: 10.1016/j.ultras.2020.106095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 11/08/2019] [Accepted: 01/06/2020] [Indexed: 06/10/2023]
Abstract
We measured the apparent reflection coefficient of a 1-MHz ultrasound compressional wave at the interface between rough and lubricated tongue mimicking surfaces and various food gels, composed of agar or gelatin. For the smoothest mimicking surface, when a lubricating layer was present, the apparent reflection coefficient was fairly similar for the different food gels (33.6% on average). The apparent reflection coefficient was significantly larger in the following situations: (i) tongue asperities were high and dense; (ii) lubrication levels were low; and (iii) gels were less rigid (range for the different gels-45.9-84.3%). The apparent reflection coefficient conveys the ability of food gels to mold themselves to surface asperities or to form a coupling film of liquid at the interface. This study demonstrates that ultrasound methods can and should be used to explore the physical phenomena that underlie the texture perceptions resulting from tongue-palate interactions.
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Affiliation(s)
- Mathieu Mantelet
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, F-78850, Thiverval-Grignon, France
| | - Frédéric Restagno
- UMR 8502 LPS, CNRS, Université Paris Sud, Université Paris-Saclay, Rue André Rivière, 91400 Orsay, France
| | - Isabelle Souchon
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, F-78850, Thiverval-Grignon, France
| | - Vincent Mathieu
- Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, F-78850, Thiverval-Grignon, France.
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22
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Sethupathy P, Moses JA, Anandharamakrishnan C. Food Oral Processing and Tribology: Instrumental Approaches and Emerging Applications. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2019.1710749] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Priyanka Sethupathy
- Computational Modeling and Nanoscale Processing Unit, Indian Institute of Food Processing Technology, Thanjavur, India
| | - Jeyan A. Moses
- Computational Modeling and Nanoscale Processing Unit, Indian Institute of Food Processing Technology, Thanjavur, India
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23
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Sirviö E, Mikkonen JJW, Koistinen AP, Miinalainen I, Kullaa AM. Localization of transmembrane mucin MUC1 on the apical surface of oral mucosal cells. Ultrastruct Pathol 2019; 43:184-189. [DOI: 10.1080/01913123.2019.1687630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Ellinoora Sirviö
- Institute of Dentistry, School of Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio Campus, Kuopio, Finland
| | - Jopi J. W. Mikkonen
- Institute of Dentistry, School of Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio Campus, Kuopio, Finland
- SIB Labs, Faculty of Science and Forestry, University of Eastern Finland, Kuopio, Finland
| | - Arto P. Koistinen
- SIB Labs, Faculty of Science and Forestry, University of Eastern Finland, Kuopio, Finland
| | | | - Arja M. Kullaa
- Institute of Dentistry, School of Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio Campus, Kuopio, Finland
- Educational Dental Clinic, Kuopio University Hospital, Kuopio, Finland
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24
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Lin CQ, Wang LH, Yang L, Qiu XH, Wang DX, Liang XD, Chen LH, Xie HM, Wang SS, Li RL. Abnormalities in acute salivary biochemical characteristic responses to gustatory stimulation with citric acid in chronic non-atrophic gastritis. J Gastroenterol Hepatol 2019; 34:1563-1570. [PMID: 30597598 DOI: 10.1111/jgh.14587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 12/10/2018] [Accepted: 12/22/2018] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Salivary characteristics are altered in gastrointestinal diseases and related to oral taste disorder. However, specific salivary biochemical characteristics and their relationships with oral taste disturbances in chronic non-atrophy gastritis (CNAG) remain uncertain. METHODS Seventy patients with CNAG and 70 subjects in healthy control group (HCG) were enrolled in our study. The levels of salivary flow rate (SFR), pH, salivary α-amylase (sAA) activity, total protein density (TPD), chloride concentration, and calcium concentration were determined before and after citric acid stimulation and compared between CNAG with and without oral taste disturbances. RESULTS Average body mass index (BMI) of CNAG (17.75 ± 2.08) was lower than that of HCG (21.96 ± 1.72, P < 0.01). Compared with HCG, CNAG showed increased TPD and calcium concentration but decreased SFR both before and after acid stimulation (P < 0.01), as well as reduced sAA and salivary chloride responses to acid stimulation (P < 0.01). Compared with CNAG with normal BMI (24.29%, 17/70), sAA activity response to acid stimulation was reduced in those with low BMI (75.71%, 53/70, P < 0.05). Under resting condition, CNAG with dry mouth (55.71%, 39/70) showed increased SFR and decreased TPD (P < 0.05), as compared with CNAG without dry mouth (44.29%, 31/70). Compared with CNAG without bitter taste (57.14%, 40/70), pH was decreased in those with bitter taste (42.86%, 30/70) under both resting and stimulated conditions (P < 0.05). CONCLUSION Decreased sAA activity may reflect malnutrition state and be one potential marker of poor digestion, decreased salivary pH may contribute to bitter taste perception, and reduced TPD might be a cause of dry mouth in CNAG.
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Affiliation(s)
- Chuan-Quan Lin
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Li-Hui Wang
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Long Yang
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiang-Hong Qiu
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China.,Spleen and Stomach Department, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dong-Xu Wang
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xue-Dan Liang
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Long-Hui Chen
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hai-Mei Xie
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shuang-Shuang Wang
- Spleen and Stomach Department, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ru-Liu Li
- Pi-Wei Institute, Guangzhou University of Chinese Medicine, Guangzhou, China
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25
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A review of the approaches to predict the ease of swallowing and post-swallow residues. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.02.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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26
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The role of natural salivary defences in maintaining a healthy oral microbiota. J Dent 2019; 80 Suppl 1:S3-S12. [DOI: 10.1016/j.jdent.2018.08.010] [Citation(s) in RCA: 151] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 08/22/2018] [Indexed: 01/19/2023] Open
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27
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Neyraud E, Morzel M. Biological films adhering to the oral soft tissues: Structure, composition, and potential impact on taste perception. J Texture Stud 2018; 50:19-26. [PMID: 30226267 DOI: 10.1111/jtxs.12363] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/10/2018] [Accepted: 09/07/2018] [Indexed: 12/22/2022]
Abstract
The role of free-flowing saliva in taste perception is increasingly recognized, but saliva is also present in the mouth as films intimately associated to soft or hard tissues. On mucosal surfaces, particularly on the tongue, the structure and composition of such films (including its microbial constitutive part) may play a particular role in the sense of taste due to their proximity with the taste anatomical structures. This review compiles the current knowledge on the structure of biological films adhering to oral mucosae and on their biochemical and microbiological composition, before presenting possible implications for taste perception. PRACTICAL APPLICATIONS: The understanding of the role of oral biological films on taste perception may provide new avenues of research and development for the industry or academia interested broadly in chemosensation.
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Affiliation(s)
- Eric Neyraud
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRA, Université de Bourgogne Franche-Comté, Dijon, France
| | - Martine Morzel
- Centre des Sciences du Goût et de l'Alimentation, AgroSup Dijon, CNRS, INRA, Université de Bourgogne Franche-Comté, Dijon, France
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28
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Kho HS. Oral epithelial MUC1 and oral health. Oral Dis 2018; 24:19-21. [PMID: 29480594 DOI: 10.1111/odi.12713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 07/12/2017] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To provide information about MUC1, epithelial membrane-bound mucin, in terms of its role in oral health. DESIGN The expression and functional roles of MUC1 in the oral mucosa and salivary glands were reviewed. Information on the modulation of oral mucosal epithelial MUC1 expression compared with that of endometrial epithelial MUC1 expression was also reviewed. In addition, the possible associations between oral mucosal epithelial MUC1 and oral diseases were explored. RESULTS MUC1 is expressed in the oral mucosa and major and minor salivary glands. Protection of oral mucosal surfaces is believed to be the main function of oral mucosal epithelial MUC1. Its role in the salivary glands is thought to facilitate salivary flow through the ductal system. Information on the role of MUC1 in signal transduction and modulation of immune function in the oral cavity is sparse. However, the possible roles of MUC1 in dry mouth conditions, burning mouth syndrome, dental caries, and oral candidiasis have been suggested. CONCLUSIONS Despite limited information, it is clear that oral epithelial MUC1 plays an important role in oral health. Further research evaluating the physiological and pathological roles of MUC1 in the oral cavity is warranted.
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Affiliation(s)
- H-S Kho
- Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea.,Institute on Aging Seoul National University, Seoul, Korea
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29
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Pedersen A, Sørensen CE, Proctor GB, Carpenter GH. Salivary functions in mastication, taste and textural perception, swallowing and initial digestion. Oral Dis 2018; 24:1399-1416. [PMID: 29645367 DOI: 10.1111/odi.12867] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 04/03/2018] [Indexed: 12/18/2022]
Abstract
Saliva exerts multiple functions in relation to the initial digestive processes taking place in the upper parts of the gastrointestinal tract. Ingestion of food and beverages, in turn, is a strong stimulus for secretion of saliva with a differential composition depending on the neuronal stimulation pattern. This review paper provides insight into the mechanisms by which saliva acts in relation to taste, mastication, bolus formation, enzymatic digestion and swallowing. Also, the protective functions of saliva including maintenance of dental and mucosal integrity will be discussed as they indirectly influence the digestive process. The final part of this study focuses on the implications of xerostomia and salivary gland dysfunction on gastrointestinal functions.
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Affiliation(s)
- Aml Pedersen
- Section 1, Oral Medicine, Oral Pathology & Clinical Oral Physiology, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - C E Sørensen
- Section of Oral Biochemistry, Cariology & Endodontics, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - G B Proctor
- Mucosal & Salivary Biology Division, King's College London Dental Institute, Guy's & St Thomas' Hospitals, London, UK
| | - G H Carpenter
- Mucosal & Salivary Biology Division, King's College London Dental Institute, Guy's & St Thomas' Hospitals, London, UK
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Mathieu V, de Loubens C, Thomas C, Panouillé M, Magnin A, Souchon I. An experimental model to investigate the biomechanical determinants of pharyngeal mucosa coating during swallowing. J Biomech 2018; 72:144-151. [PMID: 29559243 DOI: 10.1016/j.jbiomech.2018.03.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 02/23/2018] [Accepted: 03/03/2018] [Indexed: 11/30/2022]
Abstract
The development of innovative experimental approaches is necessary to gain insights in the complex biomechanics of swallowing. In particular, unraveling the mechanisms of formation of the thin film of bolus coating the pharyngeal mucosa after the ingestion of liquid or semi-liquid food products is an important challenge, with implication in dysphagia treatment and sensory perceptions. The aim here is to propose an original experimental model of swallowing (i) to simulate the peristaltic motions driving the bolus from the oral cavity to the esophagus, (ii) to mimic and vary complex physiological variables of the pharyngeal mucosa (lubrication, deformability and velocity) and (iii) to measure the thickness and the composition of the coatings resulting from bolus flow. Three Newtonian glucose solutions were considered as model food boli, through sets of experiments covering different ranges of each physiological parameter mimicked. The properties of the coatings (thickness and dilution in saliva film) were shown to depend significantly on the physical properties of food products considered (viscosity and density), but also on physiological variables such as lubrication by saliva, velocity of the peristaltic wave, and to a lesser extent, the deformability of the pharyngeal mucosa. The biomechanical peristalsis simulator developed here can contribute to unravel the determinants of bolus adhesion on pharyngeal mucosa, necessary both for the design of alternative food products for people affected by swallowing disorders, and for a better understanding of the dynamic mechanisms of aroma perception.
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Affiliation(s)
- Vincent Mathieu
- UMR GMPA, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France.
| | - Clément de Loubens
- UMR GMPA, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France; Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, 38000 Grenoble, France
| | - Chloé Thomas
- UMR GMPA, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France
| | - Maud Panouillé
- UMR GMPA, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France
| | - Albert Magnin
- Univ. Grenoble Alpes, CNRS, Grenoble INP (Institute of Engineering Univ. Grenoble Alpes), LRP, 38000 Grenoble, France
| | - Isabelle Souchon
- UMR GMPA, INRA, AgroParisTech, Université Paris-Saclay, 78850 Thiverval-Grignon, France
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Mystkowska J, Niemirowicz-Laskowska K, Łysik D, Tokajuk G, Dąbrowski JR, Bucki R. The Role of Oral Cavity Biofilm on Metallic Biomaterial Surface Destruction-Corrosion and Friction Aspects. Int J Mol Sci 2018; 19:E743. [PMID: 29509686 PMCID: PMC5877604 DOI: 10.3390/ijms19030743] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 02/23/2018] [Accepted: 03/03/2018] [Indexed: 12/14/2022] Open
Abstract
Metallic biomaterials in the oral cavity are exposed to many factors such as saliva, bacterial microflora, food, temperature fluctuations, and mechanical forces. Extreme conditions present in the oral cavity affect biomaterial exploitation and significantly reduce its biofunctionality, limiting the time of exploitation stability. We mainly refer to friction, corrosion, and biocorrosion processes. Saliva plays an important role and is responsible for lubrication and biofilm formation as a transporter of nutrients for microorganisms. The presence of metallic elements in the oral cavity may lead to the formation of electro-galvanic cells and, as a result, may induce corrosion. Transitional microorganisms such as sulfate-reducing bacteria may also be present among the metabolic microflora in the oral cavity, which can induce biological corrosion. Microorganisms that form a biofilm locally change the conditions on the surface of biomaterials and contribute to the intensification of the biocorrosion processes. These processes may enhance allergy to metals, inflammation, or cancer development. On the other hand, the presence of saliva and biofilm may significantly reduce friction and wear on enamel as well as on biomaterials. This work summarizes data on the influence of saliva and oral biofilms on the destruction of metallic biomaterials.
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Affiliation(s)
- Joanna Mystkowska
- Department of Materials Engineering and Production, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C, 15-351 Bialystok, Poland.
| | - Katarzyna Niemirowicz-Laskowska
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland.
| | - Dawid Łysik
- Department of Materials Engineering and Production, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C, 15-351 Bialystok, Poland.
| | - Grażyna Tokajuk
- Department of Integrated Dentistry, Medical University of Bialystok, M. Sklodowskiej-Curie 24a, 15-276 Bialystok, Poland.
| | - Jan R Dąbrowski
- Department of Materials Engineering and Production, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C, 15-351 Bialystok, Poland.
| | - Robert Bucki
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland.
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Wessel SW, van der Mei HC, Slomp AM, van de Belt-Gritter B, Dodds MWJ, Busscher HJ. Self-perceived mouthfeel and physico-chemical surface effects after chewing gums containing sorbitol and Magnolia bark extract. Eur J Oral Sci 2017; 125:379-384. [PMID: 28857279 DOI: 10.1111/eos.12370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The European Food Safety Authority recognizes the contribution of sugar-free chewing gum to oral health through increased salivation, clearance of food debris, and neutralization of biofilm pH. Magnolia bark extract is a gum additive shown to reduce the prevalence of bad-breath bacteria but its effects on self-perceived mouthfeel are unknown. This paper aims to relate the effects of sorbitol-containing chewing gum, with and without Magnolia bark extract, on tooth-surface hydrophobicity and salivary-film composition with self-perceived mouthfeel. In a crossover clinical trial, volunteers chewed sorbitol-containing gum, with or without Magnolia bark extract added, three times daily during a 4-wk time period. A subset of volunteers also chewed Parafilm as a mastication control. Oral moistness and tooth smoothness were assessed using questionnaires, and intra-oral water-contact angles were measured before, immediately after, and 60 min after, chewing. Simultaneously, saliva samples were collected, placed on glass slides, and the compositions of the adsorbed film were measured using X-ray photoelectron spectroscopy. Chewing of gum, regardless of whether or not it contained Magnolia bark extract, improved self-perceived mouthfeel up to 60 min, concurrent with a more hydrophilic tooth surface and an increased amount of O1s electrons bound at 532.6 eV in salivary films. Chewing of Parafilm affected neither tooth-surface hydrophobicity nor salivary-film composition. Accordingly, adsorption of sorbitol, rather than the presence of Magnolia bark extract or increased salivation, is responsible for improved self-perceived mouthfeel.
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Affiliation(s)
- Stefan W Wessel
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, the Netherlands
| | - Henny C van der Mei
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, the Netherlands
| | - Anje M Slomp
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, the Netherlands
| | - Betsy van de Belt-Gritter
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, the Netherlands
| | | | - Henk J Busscher
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, the Netherlands
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The mucosal pellicle – An underestimated factor in oral physiology. Arch Oral Biol 2017; 80:144-152. [DOI: 10.1016/j.archoralbio.2017.04.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 03/27/2017] [Accepted: 04/02/2017] [Indexed: 11/20/2022]
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Kang JH, Kim YY, Chang JY, Kho HS. Relationships between oral MUC1 expression and salivary hormones in burning mouth syndrome. Arch Oral Biol 2017; 78:58-64. [DOI: 10.1016/j.archoralbio.2017.01.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 01/23/2017] [Accepted: 01/31/2017] [Indexed: 12/23/2022]
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Ukkonen H, Pirhonen P, Herrala M, Mikkonen JJ, Singh SP, Sormunen R, Kullaa AM. Oral mucosal epithelial cells express the membrane anchored mucin MUC1. Arch Oral Biol 2017; 73:269-273. [DOI: 10.1016/j.archoralbio.2016.10.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/26/2016] [Accepted: 10/15/2016] [Indexed: 12/25/2022]
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Aubert B, Lima A, Le Révérend B. Biophysical basis of taste modulation by viscous solutions in humans. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.04.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Navarrete BA, Palacios PJR, Aguilar-Salvatierra A, Guardia J, Gómez-Moreno G. Effect of inhaled corticosteroids on salival composition: a cross-sectional study in patients with bronchial asthma. Clin Drug Investig 2016; 35:569-74. [PMID: 26271244 DOI: 10.1007/s40261-015-0313-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND To date, no evidence exists in the literature as to the effects of inhaled corticosteroids (ICs) on salivary composition in patients with bronchial asthma. OBJECTIVE The aim of this study was to assess the effect of ICs on salival composition. METHODS Adult patients attending an outpatient respiratory clinic who were classified into two groups (controls and patients with bronchial asthma receiving ICs), were recruited in this cross-sectional study. For each participant, data of clinical records, baseline history of asthma, and regular IC dose were recorded. A sample of stimulated saliva was collected and processed for investigation of mucin 5B (MUC5B), lipoxygenase (LPO), total antioxidant capacity, and 8-hydroxydeoxyguanosine (8-OHdG) levels. RESULTS Overall, 103 patients (49 controls and 54 patients receiving regular treatment with ICs) were recruited. No differences in comorbidities or smoking habits were observed. Patients treated with high-doses of ICs showed lower levels of salival MUC5B compared with those treated with medium IC doses or those not treated with ICs (1.60 vs. 2.20 vs. 2.53 ng/mL; p = 0.042). CONCLUSION In patients with asthma, treatment with high-doses of ICs is associated with reduced levels of salivary MUC5B. This effect can explain some of the effects of ICs on oral health.
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Naumova EA, Dickten C, Jung R, Krauss F, Rübesamen H, Schmütsch K, Sandulescu T, Zimmer S, Arnold WH. Dynamics of Fluoride Bioavailability in the Biofilms of Different Oral Surfaces after Amine Fluoride and Sodium Fluoride Application. Sci Rep 2016; 6:18729. [PMID: 26727989 PMCID: PMC4700523 DOI: 10.1038/srep18729] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 11/25/2015] [Indexed: 11/21/2022] Open
Abstract
It was the aim of this study to investigate differences in fluoride bioavailability in different oral areas after the application of amine fluoride (AmF) and sodium fluoride (NaF). The null hypothesis suggested no differences in the fluoride bioavailability. The tongue coating was removed and biofilm samples from the palate, oral floor and cheeks were collected. All subjects brushed their teeth with toothpaste containing AmF or NaF. Specimens were collected before, as well as immediately after and at 30 and 120 minutes after tooth brushing. The fluoride concentration was determined. The area under the curve was calculated for each location and compared statistically. In the tongue coating, fluoride concentration increased faster after NaF application than after AmF application. After 30 minutes, the fluoride concentration decreased and remained stable until 120 minutes after AmF application and returned to baseline after NaF application. The difference between the baseline and the endpoint measurements was statistically significant. The fluoride concentration in the tongue coating remained at a higher level compared with the baseline for up to 120 minutes post-brushing. This may indicate that the tongue coating is a major reservoir for fluoride bioavailability. The results also indicate an unequal fluoride distribution in the oral cavity.
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Affiliation(s)
- Ella A. Naumova
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Christoph Dickten
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Rico Jung
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Florian Krauss
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Henrik Rübesamen
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Katharina Schmütsch
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Tudor Sandulescu
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Stefan Zimmer
- Dept. of Operative and Preventive Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
| | - Wolfgang H. Arnold
- Dept. of Biological and Material Sciences in Dentistry, Faculty of Health, School of Dentistry, Witten/Herdecke University, Witten, Germany
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Ployon S, Belloir C, Bonnotte A, Lherminier J, Canon F, Morzel M. The membrane-associated MUC1 improves adhesion of salivary MUC5B on buccal cells. Application to development of an in vitro cellular model of oral epithelium. Arch Oral Biol 2016; 61:149-55. [DOI: 10.1016/j.archoralbio.2015.11.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/02/2015] [Accepted: 11/03/2015] [Indexed: 12/19/2022]
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41
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Chaudhury NMA, Proctor GB, Karlsson NG, Carpenter GH, Flowers SA. Reduced Mucin-7 (Muc7) Sialylation and Altered Saliva Rheology in Sjögren's Syndrome Associated Oral Dryness. Mol Cell Proteomics 2015; 15:1048-59. [PMID: 26631508 DOI: 10.1074/mcp.m115.052993] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Indexed: 12/20/2022] Open
Abstract
Sjögren's syndrome is a chronic autoimmune disorder characterized by lymphocytic infiltration and hypofunction of salivary and lacrimal glands. This loss of salivary function leads to oral dryness, impaired swallowing and speech, and increased infection and is associated with other autoimmune diseases and an increased risk of certain cancers. Despite the implications of this prevalent disease, diagnosis currently takes years, partly due to the diversity in patient presentation. Saliva is a complicated biological fluid with major constituents, including heavily glycosylated mucins MUC5B and MUC7, important for its viscoelastic and hydrating and lubricating properties. This study investigated Sjögren's patient's perception of dryness (bother index questionnaires) along with the rheological, protein composition, and glycan analysis of whole mouth saliva and the saliva on the mucosal surface (residual mucosal saliva) to understand the properties that most affect patient wellbeing. Sjögren's patients exhibited a statistically significant reduction in residual mucosal saliva, salivary flow rate, and extensional rheology, spinnbarkeit (stringiness). Although the concentration of mucins MUC5B and MUC7 were similar between patients and controls, a comparison of protein Western blotting and glycan staining identified a reduction in mucin glycosylation in Sjögren's, particularly on MUC7. LC-MS/MS analysis of O-glycans released from MUC7 by β-elimination revealed that although patients had an increase in core 1 sulfation, the even larger reduction in sialylation resulted in a global decline of charged glycans. This was primarily due to the loss of the extended core 2 disialylated structure, with and without fucosylation. A decrease in the extended, fucosylated core 2 disialylated structure on MUC7, residual mucosal wetness, and whole mouth saliva flow rate appeared to have a negative and cumulative effect on the perception of oral dryness. The observed changes in MUC7 glycosylation could be a potential diagnostic tool for saliva quality and taken into consideration for future therapies for this multifactorial syndrome.
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Affiliation(s)
- Nayab M A Chaudhury
- From the ‡Salivary Unit, Mucosal and Salivary Biology, Dental Institute, King's College London, Guy's Hospital, Floor 17, Tower Wing, London SE1 9RT, UK
| | - Gordon B Proctor
- From the ‡Salivary Unit, Mucosal and Salivary Biology, Dental Institute, King's College London, Guy's Hospital, Floor 17, Tower Wing, London SE1 9RT, UK
| | - Niclas G Karlsson
- §Department of Medical Biochemistry, Institute of Biomedicine, University of Gothenburg, Medicinaregatan 9A, 405 30, Gothenburg, Sweden
| | - Guy H Carpenter
- From the ‡Salivary Unit, Mucosal and Salivary Biology, Dental Institute, King's College London, Guy's Hospital, Floor 17, Tower Wing, London SE1 9RT, UK
| | - Sarah A Flowers
- §Department of Medical Biochemistry, Institute of Biomedicine, University of Gothenburg, Medicinaregatan 9A, 405 30, Gothenburg, Sweden
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Chaudhury N, Shirlaw P, Pramanik R, Carpenter G, Proctor G. Changes in Saliva Rheological Properties and Mucin Glycosylation in Dry Mouth. J Dent Res 2015; 94:1660-7. [DOI: 10.1177/0022034515609070] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Saliva is vital for the maintenance of normal oral physiology and mucosal health. The loss of salivary function can have far-reaching consequences, as observed with dry mouth, which is associated with increased orodental disease, speech impairment, dysphagia, and a significant negative effect on quality of life. The timely diagnosis of oral dryness is vital for the management of orodental disease and any associated often-undiagnosed systemic disease (e.g., Sjögren syndrome). Our aim was to investigate differences in mucin glycoproteins and saliva rheological properties between sufferers and nonsufferers of dry mouth in order to understand the relationship between saliva composition, rheological properties, and dryness perception and provide additional potential diagnostic markers. All patients exhibited objective and subjective oral dryness, irrespective of etiology. Over half of the patients ( n = 20, 58.8%) had a saliva secretion rate above the gland dysfunction cutoff of 0.1 mL/min. Mucin (MUC5B and MUC7) concentrations were generally similar or higher in patients. Despite the abundance of these moisture-retaining proteins, patients exhibited reduced mucosal hydration (wetness) and significantly lower saliva spinnbarkeit (stringiness), suggesting a loss of the lubricating and retention/adhesion properties of saliva, which, at least partially, are associated with mucin glycoproteins. Over 90% of patients with dry mouth (DMPs) consistently had unstimulated whole mouth saliva (UWMS) spinnbarkeit below the proposed normal cutoff (10 mm). Further analysis of mucins revealed the reduced glycosylation of mucins in DMPs compared to healthy controls. Our data indicate that UWMS mucin concentrations are not reduced in dry mouth but that the mucin structure (glycosylation) is altered. UWMS from DMPs had reduced spinnbarkeit, the assessment of which, in conjunction with sialometry, could improve sensitivity for the diagnosis of dry mouth. Additionally, it may be useful to take into consideration the altered mucin glycosylation and saliva rheological properties when designing synthetic or purified mucins for saliva substitutes and dry mouth therapy.
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Affiliation(s)
- N.M.A. Chaudhury
- Mucosal and Salivary Biology Division, Dental Institute, Guy’s Hospital, King’s College London, London, UK
| | - P. Shirlaw
- Department of Oral Medicine, Guy’s and St. Thomas’ National Health Service Foundation Trust, London, UK
| | - R. Pramanik
- Mucosal and Salivary Biology Division, Dental Institute, Guy’s Hospital, King’s College London, London, UK
- Genetic Skin Disease Group, St. John’s Institute of Dermatology, National Institute for Health Research Biomedical Research Centre, Guy’s and St. Thomas’ National Health Service Foundation Trust and King’s College London, London, UK
| | - G.H. Carpenter
- Mucosal and Salivary Biology Division, Dental Institute, Guy’s Hospital, King’s College London, London, UK
| | - G.B. Proctor
- Mucosal and Salivary Biology Division, Dental Institute, Guy’s Hospital, King’s College London, London, UK
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Vijay A, Inui T, Dodds M, Proctor G, Carpenter G. Factors That Influence the Extensional Rheological Property of Saliva. PLoS One 2015; 10:e0135792. [PMID: 26305698 PMCID: PMC4549258 DOI: 10.1371/journal.pone.0135792] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 07/27/2015] [Indexed: 01/25/2023] Open
Abstract
The spinnbarkeit of saliva reflects the ability of saliva to adhere to surfaces within the mouth, thereby serving as a protective role and aiding in lubrication. Therefore, alterations in the extensional rheology of saliva may result in the loss in adhesiveness or the ability to bind onto surfaces. Mucin glycoproteins and their structures are known to be important factors for the extensional rheological properties of saliva. The conformation of mucin depends on factors such as pH and ionic strength. Chewing is one of the main stimuli for salivary secretion but creates significant sheer stress on the salivary film which could influence mouthfeel perceptions. The current study investigates the possible factors which affect the extensional rheological properties of saliva by comparing submandibular/sublingual saliva with different oral stimuli within the same group of subjects. Unstimulated and stimulated saliva (chew, smell and taste) salivas were collected primarily from submandibular/sublingual glands. The saliva samples were measured for Spinnbarkeit followed by the measuring mucin, total protein, total calcium and bicarbonate concentrations. The results indicated correlations between rheological properties and mucin/ion concentrations. However, chewing stimulated submandibular/sublingual saliva is shown to have significantly lower Spinnbarkeit, but factors such as mucin, protein and calcium concentrations did not account for this variation. Analysis of the concentration of bicarbonate and pH appears to suggest that it has a prominent effect on extensional rheology of saliva.
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Affiliation(s)
- Amrita Vijay
- King’s College London Dental Institute, Salivary Research Unit, London, United Kingdom
| | - Taichi Inui
- Wm. Wrigley Jr. Co., Chicago, Illinois, United States of America
| | - Michael Dodds
- Wm. Wrigley Jr. Co., Chicago, Illinois, United States of America
| | - Gordon Proctor
- King’s College London Dental Institute, Salivary Research Unit, London, United Kingdom
| | - Guy Carpenter
- King’s College London Dental Institute, Salivary Research Unit, London, United Kingdom
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44
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Asikainen P, Sirviö E, Mikkonen JJW, Singh SP, Schulten EAJM, ten Bruggenkate CM, Koistinen AP, Kullaa AM. Microplicae – Specialized Surface Structure of Epithelial Cells of Wet-Surfaced Oral Mucosa. Ultrastruct Pathol 2015. [DOI: 10.3109/01913123.2015.1054015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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45
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Gibbins HL, Proctor GB, Yakubov GE, Wilson S, Carpenter GH. SIgA binding to mucosal surfaces is mediated by mucin-mucin interactions. PLoS One 2015; 10:e0119677. [PMID: 25793390 PMCID: PMC4368717 DOI: 10.1371/journal.pone.0119677] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 01/15/2015] [Indexed: 11/26/2022] Open
Abstract
The oral mucosal pellicle is a layer of absorbed salivary proteins, including secretory IgA (SIgA), bound onto the surface of oral epithelial cells and is a useful model for all mucosal surfaces. The mechanism by which SIgA concentrates on mucosal surfaces is examined here using a tissue culture model with real saliva. Salivary mucins may initiate the formation of the mucosal pellicle through interactions with membrane-bound mucins on cells. Further protein interactions with mucins may then trigger binding of other pellicle proteins. HT29 colon cell lines, which when treated with methotrexate (HT29-MTX) produce a gel-forming mucin, were used to determine the importance of these mucin-mucin interactions. Binding of SIgA to cells was then compared using whole mouth saliva, parotid (mucin-free) saliva and a source of purified SIgA. Greatest SIgA binding occurred when WMS was incubated with HT29-MTX expressing mucus. Since salivary MUC5B was only able to bind to cells which produced mucus and purified SIgA showed little binding to the same cells we conclude that most SIgA binding to mucosal cells occurs because SIgA forms complexes with salivary mucins which then bind to cells expressing membrane-bound mucins. This work highlights the importance of mucin interactions in the development of the mucosal pellicle.
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Affiliation(s)
- Hannah L. Gibbins
- Salivary Research Unit, King’s College London Dental Institute, London, United Kingdom
| | - Gordon B. Proctor
- Salivary Research Unit, King’s College London Dental Institute, London, United Kingdom
| | - Gleb E. Yakubov
- Australian Research Council Centre of Excellence in Plant Cell Walls, School of Chemical Engineering, The University of Queensland, Queensland, Australia
| | - Stephen Wilson
- Unilever R&D Discover, Colworth Science Park, Sharnbrook, United Kingdom
| | - Guy H. Carpenter
- Salivary Research Unit, King’s College London Dental Institute, London, United Kingdom
- * E-mail:
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46
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Han P, Suarez-Durall P, Mulligan R. Dry mouth: A critical topic for older adult patients. J Prosthodont Res 2015; 59:6-19. [DOI: 10.1016/j.jpor.2014.11.001] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 11/05/2014] [Indexed: 11/24/2022]
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47
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Kerr AR, Corby PM, Kalliontzi K, McGuire JA, Charles CA. Comparison of two mouthrinses in relation to salivary flow and perceived dryness. Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 119:59-64. [PMID: 25482548 DOI: 10.1016/j.oooo.2014.09.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 09/16/2014] [Accepted: 09/22/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To compare measures of dry mouth following extended use of an alcohol-based mouthrinse (LISTERINE Antiseptic [LA]) and a non-alcohol-based mouthrinse (Crest Pro-Health Rinse [CPH]) on healthy adults with "normal" salivary flow. METHODS This single-site, randomized, observer-blinded, parallel study compared unstimulated whole salivary flow and perceived dryness following daily use at weeks 4 and 12 versus baseline. Noninferiority, between-treatment flow comparisons (0.15 mL/min margin), and between-treatment comparisons of the mean Bluestone Mouthfeel Questionnaire (BMQ) visual analog scale scores were made using analysis of covariance. RESULTS Measures of dry mouth were comparable between mouthrinses, as demonstrated by both noninferiority of LA versus CPH flow (P < .001) and no significant differences between groups in the BMQ measures at 4 or 12 weeks. CONCLUSIONS Extended use of an alcohol-based mouthrinse is no more likely to cause reduction in salivary flow or perceived dryness in individuals with normal salivary flow compared with a non-alcohol-based mouthrinse (CPH).
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Affiliation(s)
- A R Kerr
- Assistant Professor, Department of Implant Dentistry & Periodontics; Assistant Director, Bluestone Center for Clinical Research, New York University College of Dentistry, New York, NY, USA.
| | - P M Corby
- Research Coordinator, Bluestone Center for Clinical Research, New York University College of Dentistry, New York, NY, USA
| | - K Kalliontzi
- Director, Johnson & Johnson Consumer and Personal Products Worldwide, Division of Johnson & Johnson Consumer Companies, Inc, New Brunswick, NJ, USA
| | - J A McGuire
- Director, Global Biostatistics, Johnson & Johnson Consumer and Personal Products Worldwide, Division of Johnson & Johnson Consumer Companies, Inc, New Brunswick, NJ, USA
| | - C A Charles
- Clinical Professor, Department of Oral & Maxillofacial Pathology, Radiology & Medicine; Director of the Oral Mucosal Disease Service, New York University College of Dentistry, New York, NY, USA
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Kullaa AM, Asikainen P, Herrala M, Ukkonen H, Mikkonen JJW. Microstructure of Oral Epithelial Cells as an Underlying Basis for Salivary Mucosal Pellicle. Ultrastruct Pathol 2014; 38:382-6. [DOI: 10.3109/01913123.2014.944732] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Morzel M, Siying T, Brignot H, Lherminier J. Immunocytological detection of salivary mucins (MUC5B) on the mucosal pellicle lining human epithelial buccal cells. Microsc Res Tech 2014; 77:453-7. [DOI: 10.1002/jemt.22366] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/25/2014] [Accepted: 03/25/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Martine Morzel
- CNRS; UMR6265 Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
- INRA; UMR1324 Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
- Université de Bourgogne; UMR Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
| | - Tai Siying
- CNRS; UMR6265 Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
- INRA; UMR1324 Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
- Université de Bourgogne; UMR Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
| | - Hélène Brignot
- CNRS; UMR6265 Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
- INRA; UMR1324 Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
- Université de Bourgogne; UMR Centre des Sciences du Goût et de l'Alimentation; F-21000 Dijon France
| | - Jeannine Lherminier
- INRA; UMR1347 Agroécologie, ERL CNRS 6300, Plateforme DImaCell, Centre de Microscopie INRA/Université de Bourgogne; F-21000 Dijon France
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Carpenter G, Cotroneo E, Moazzez R, Rojas-Serrano M, Donaldson N, Austin R, Zaidel L, Bartlett D, Proctor G. Composition of Enamel Pellicle from Dental Erosion Patients. Caries Res 2014; 48:361-7. [DOI: 10.1159/000356973] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 11/03/2013] [Indexed: 11/19/2022] Open
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