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Sodnom-Ish B, Eo MY, Cho YJ, Seo MH, Yang HC, Kim MK, Myoung H, Lee SK, Kim SM. Identification of biological components for sialolith formation organized in circular multi-layers. Sci Rep 2023; 13:12277. [PMID: 37507401 PMCID: PMC10382579 DOI: 10.1038/s41598-023-37462-w] [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] [Received: 12/31/2022] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
According to the previous studies of sialolithiasis reported so far, this study is aimed to identify the biological components of sialolith, which show different ultrastructures and chemical compositions from other stones, cholelith and urolith. Twenty-two specimens obtained from 20 patients were examined histologically, and analyzed with micro-CT, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and transmission electron microscopy (TEM). All sialoliths (n = 22) observed in this study showed a central nidus, which was filled with organoid matrix admixed with exosome vesicles, loose calcium apatite crystals, and many bacteria. The micro-CT and SEM observation clearly defined a single or multiple central nidus(es) encircled by highly calcified compact zone. The circular compact zone showed a band-like calcification, about 1-3 mm in thickness, and usually located between the central nidus and the peripheral multilayer zone. But some sialoliths (n = 5) showed severe erosion of compact zone by expanding multilayered zone depending on the level of calcification and inflammation in sialolith. By observing TEM images, many exosome vesicles and degraded cytoplasmic organelles were found in the central nidus, and some epithelial cells were also found in the calcified matrix of peripheral multilayer zone. Particularly, EDS analysis indicated the highest Ca/P ratio in the intermediate compact zone (1.77), and followed by the central nidus area (1.39) and the peripheral multilayer zone (0.87). Taken together, these data suggest that the central nidus containing many inflammatory exosomes and degraded cytoplasmic organelles has a potential to induce a band-like calcification of compact zone, and followed by the additional multilayer deposition of exfoliated salivary epithelial cells as well as salivary materials. Thereby, the calcium apatite-based sialolith is gradually growing in its volume size, and eventually obstructs the salivary flow and provides a site for the bacterial infection.
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Affiliation(s)
- Buyanbileg Sodnom-Ish
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Mi Young Eo
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Yun Ju Cho
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Mi Hyun Seo
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Hyeong-Cheol Yang
- Department of Dental Biomaterials Science, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Min-Keun Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, Korea
| | - Hoon Myoung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Suk Keun Lee
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung, Korea.
| | - Soung Min Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea.
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Musiał N, Bogucka A, Tretiakow D, Skorek A, Ryl J, Czaplewska P. Proteomic analysis of sialoliths from calcified, lipid and mixed groups as a source of potential biomarkers of deposit formation in the salivary glands. Clin Proteomics 2023; 20:11. [PMID: 36949424 PMCID: PMC10035263 DOI: 10.1186/s12014-023-09402-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/08/2023] [Indexed: 03/24/2023] Open
Abstract
Salivary stones, also known as sialoliths, are formed in a pathological situation in the salivary glands. So far, neither the mechanism of their formation nor the factors predisposing to their formation are known despite several hypotheses. While they do not directly threaten human life, they significantly deteriorate the patient's quality of life. Although this is not a typical research material, attempts are made to apply various analytical tools to characterise sialoliths and search for the biomarkers in their proteomes. In this work, we used mass spectrometry and SWATH-MS qualitative and quantitative analysis to investigate the composition and select proteins that may contribute to solid deposits in the salivary glands. Twenty sialoliths, previously characterized spectroscopically and divided into the following groups: calcified (CAL), lipid (LIP) and mixed (MIX), were used for the study. Proteins unique for each of the groups were found, including: for the CAL group among them, e.g. proteins from the S100 group (S100 A8/A12 and P), mucin 7 (MUC7), keratins (KRT1/2/4/5/13), elastase (ELANE) or stomatin (STOM); proteins for the LIP group-transthyretin (TTR), lactotransferrin (LTF), matrix Gla protein (MPG), submandibular gland androgen-regulated protein 3 (SMR3A); mixed stones had the fewest unique proteins. Bacterial proteins present in sialoliths have also been identified. The analysis of the results indicates the possible role of bacterial infections, disturbances in calcium metabolism and neutrophil extracellular traps (NETs) in the formation of sialoliths.
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Affiliation(s)
- Natalia Musiał
- Intercollegiate Faculty of Biotechnology UG&MUG, University of Gdańsk, Abrahama 58, 80-307, Gdańsk, Poland.
| | - Aleksandra Bogucka
- Intercollegiate Faculty of Biotechnology UG&MUG, University of Gdańsk, Abrahama 58, 80-307, Gdańsk, Poland
- Institute of Biochemistry, Medical Faculty, Justus Liebig University of Giessen, Friedrichstrasse 24, 35392, Giessen, Germany
| | - Dmitry Tretiakow
- Department of Otolaryngology, Faculty of Medicine, Medical University of Gdańsk, Smoluchowskiego 17, 80-214, Gdańsk, Poland
| | - Andrzej Skorek
- Department of Otolaryngology, Faculty of Medicine, Medical University of Gdańsk, Smoluchowskiego 17, 80-214, Gdańsk, Poland
| | - Jacek Ryl
- Division of Electrochemistry and Surface Physical Chemistry, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - Paulina Czaplewska
- Intercollegiate Faculty of Biotechnology UG&MUG, University of Gdańsk, Abrahama 58, 80-307, Gdańsk, Poland.
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The roles of heteromorphic crystals and organic compounds in the formation of the submandibular stones. Heliyon 2022; 8:e12329. [PMID: 36582680 PMCID: PMC9792800 DOI: 10.1016/j.heliyon.2022.e12329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 10/17/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Objective The study aimed to analyze the formation process of submandibular stones based on the theory of biological mineralization and inorganic crystal structure variation. Study design From January 2021 to December 2021, patients with submandibular stones treated in the Affiliated Hospital of Stomatology, Sun Yat-sen University (Guangzhou, China) were selected. According to the criterion of maximum transverse diameter ≥3 mm, a total of five submandibular stones meeting the requirement were included. After the surface of sample stones were washed, they were cut along the maximum transverse diameter. Next, the study employed Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDS), and polycrystalline X-ray Diffraction (XRD) to analyze the composition and structure of submandibular stones. Results Five submandibular stones were included. The organic and inorganic compounds showed a rhythmic or irregular distribution. Submandibular stones were highly occupied with carbon (C), oxygen (O), calcium (Ca), and phosphorus (P). Hydroxyapatite (HAP) was the primary inorganic component. In addition, the precursor of HAP, namely Amorphous Calcium Phosphate (ACP), was also found. Tetrahedral Substitution Index (TSI) and Ca/P ratio reflected the degree of structural variation in HAP crystal, which fluctuated from 5.62-90.71 and 1.10-1.35, respectively. Conclusions The development of submandibular stones was influenced by inorganic crystals' chemical and structural variation as well as the organics' regulation towards the inorganic. The isomorphic substitution was accompanied by the occurrence of inorganic crystals, resulting in the crystal structure change. Organics might influence the appearance, aggregation, and mineralization of HAP during its formation.
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Dash HR, Das S. Thanatomicrobiome and epinecrotic community signatures for estimation of post-mortem time interval in human cadaver. Appl Microbiol Biotechnol 2020; 104:9497-9512. [PMID: 33001249 DOI: 10.1007/s00253-020-10922-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 12/12/2022]
Abstract
Estimation of post-mortem time interval (PMI) is a key parameter in the forensic investigation which poses a huge challenge to the medico-legal experts. The succession of microbes within different parts of the human body after death has shown huge potential in the determination of PMI. Human body harbors trillions of microorganisms as commensals. With the death of an individual when biological functions are stopped, these microorganisms behave contrarily along with the invasion of degrading microbes from the environment. Human cadaver becomes a rich source of nutrients due to autolysis of cells, which attracts various invading microorganisms as well as macroorganisms. At different stages of degradation, the succession of microorganisms differs significantly which can be explored for accurate PMI estimation. With the advent of microbial genomics technique and reduction in the cost of DNA sequencing, thanatomicrobiome and epinecrotic community analysis have gained huge attention in PMI estimation. The article summarizes different sources of microorganisms in a human cadaver, their succession pattern, and analytical techniques for application in the field of microbial forensics. KEY POINTS: • Thanatomicrobiome and epinecrotic microbiome develop in postmortem human body. • Lack of metabolic, immune, neuroendocrine systems facilitate microbial succession. • Analysis of postmortem microbial communities predicts accurate PMI.
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Affiliation(s)
- Hirak Ranjan Dash
- Forensic Science Laboratory, Bhadbhada Road, Bhopal, Madhya Pradesh, 462003, India.
| | - Surajit Das
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela, Odisha, 769008, India.
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Schapher M, Koch M, Weidner D, Scholz M, Wirtz S, Mahajan A, Herrmann I, Singh J, Knopf J, Leppkes M, Schauer C, Grüneboom A, Alexiou C, Schett G, Iro H, Muñoz LE, Herrmann M. Neutrophil Extracellular Traps Promote the Development and Growth of Human Salivary Stones. Cells 2020; 9:cells9092139. [PMID: 32971767 PMCID: PMC7564068 DOI: 10.3390/cells9092139] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/13/2020] [Accepted: 09/16/2020] [Indexed: 12/16/2022] Open
Abstract
Salivary gland stones, or sialoliths, are the most common cause of the obstruction of salivary glands. The mechanism behind the formation of sialoliths has been elusive. Symptomatic sialolithiasis has a prevalence of 0.45% in the general population, is characterized by recurrent painful periprandial swelling of the affected gland, and often results in sialadenitis with the need for surgical intervention. Here, we show by the use of immunohistochemistry, immunofluorescence, computed tomography (CT) scans and reconstructions, special dye techniques, bacterial genotyping, and enzyme activity analyses that neutrophil extracellular traps (NETs) initiate the formation and growth of sialoliths in humans. The deposition of neutrophil granulocyte extracellular DNA around small crystals results in the dense aggregation of the latter, and the subsequent mineralization creates alternating layers of dense mineral, which are predominantly calcium salt deposits and DNA. The further agglomeration and appositional growth of these structures promotes the development of macroscopic sialoliths that finally occlude the efferent ducts of the salivary glands, causing clinical symptoms and salivary gland dysfunction. These findings provide an entirely novel insight into the mechanism of sialolithogenesis, in which an immune system-mediated response essentially participates in the physicochemical process of concrement formation and growth.
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Affiliation(s)
- Mirco Schapher
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Michael Koch
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Daniela Weidner
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Michael Scholz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Institute of Functional and Clinical Anatomy, Universitätsstrasse 19, 91054 Erlangen, Germany;
| | - Stefan Wirtz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 1, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany
| | - Aparna Mahajan
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Irmgard Herrmann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Jeeshan Singh
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Jasmin Knopf
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Moritz Leppkes
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 1, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany
| | - Christine Schauer
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Anika Grüneboom
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Christoph Alexiou
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Georg Schett
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Heinrich Iro
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Otolaryngology, Head and Neck Surgery, Universitätsklinikum Erlangen, Waldstrasse 1, 91054 Erlangen, Germany; (M.S.); (M.K.); (C.A.); (H.I.)
| | - Luis E. Muñoz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
| | - Martin Herrmann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (D.W.); (A.M.); (I.H.); (J.S.); (J.K.); (C.S.); (A.G.); (G.S.); (L.E.M.)
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Deutsches Zentrum für Immuntherapie, Universitätsklinikum Erlangen, Ulmenweg 18, 91054 Erlangen, Germany; (S.W.); (M.L.)
- Correspondence:
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