Matrix-assisted laser desorption/ionization imaging mass spectrometry revealed traces of dental problem associated with dental structure

Periodontal disease is a serious dental problem because it does not heal naturally and leads to tooth loss. In periodontal disease, inflammation at periodontal tissue is thought as predominant, and its effect against tooth itself remains unclear. In this study, we applied matrix-assisted laser desor...

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Veröffentlicht in:Analytical and bioanalytical chemistry 2014-02, Vol.406 (5), p.1355-1363
Hauptverfasser: Hirano, Hirokazu, Masaki, Noritaka, Hayasaka, Takahiro, Watanabe, Yoshiko, Masumoto, Kazuma, Nagata, Tetsuji, Katou, Fuminori, Setou, Mitsutoshi
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container_issue 5
container_start_page 1355
container_title Analytical and bioanalytical chemistry
container_volume 406
creator Hirano, Hirokazu
Masaki, Noritaka
Hayasaka, Takahiro
Watanabe, Yoshiko
Masumoto, Kazuma
Nagata, Tetsuji
Katou, Fuminori
Setou, Mitsutoshi
description Periodontal disease is a serious dental problem because it does not heal naturally and leads to tooth loss. In periodontal disease, inflammation at periodontal tissue is thought as predominant, and its effect against tooth itself remains unclear. In this study, we applied matrix-assisted laser desorption/ionization imaging mass spectrometry (IMS) to teeth for the first time. By comparing anatomical structure of tooth affected with periodontal disease with normal ones, we analyzed traces of the disease on tooth. We found signals characteristic of enamel, dentin, and dental pulp, respectively, in mass spectra obtained from normal teeth. Ion images reconstructed using these signals showed anatomical structures of the tooth clearly. Next, we performed IMS upon teeth of periodontal disease. Overall characteristic of the mass spectrum appeared similar to normal ones. However, ion images reconstructed using signals from the tooth of periodontal disease revealed loss of periodontal ligament visualized together with dental pulp in normal teeth. Moreover, ion image clearly depicted an accumulation of signal at m / z 496.3 at root surface. Such an accumulation that cannot be examined only from mass spectrum was revealed by utilization of IMS. Recent studies about inflammation revealed that the signal at m / z 496.3 reflects lyso-phosphatidylcholine (LPC). Infiltration of the signal is statistically significant, and its intensity profile exhibited the influence has reached deeply into the tooth. This suggests that influence of periodontal disease is not only inflammation of periodontal tissue but also infiltration of LPC to root surface, and therefore, anti-inflammatory treatment is required besides conventional treatments.
doi_str_mv 10.1007/s00216-013-7075-y
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In periodontal disease, inflammation at periodontal tissue is thought as predominant, and its effect against tooth itself remains unclear. In this study, we applied matrix-assisted laser desorption/ionization imaging mass spectrometry (IMS) to teeth for the first time. By comparing anatomical structure of tooth affected with periodontal disease with normal ones, we analyzed traces of the disease on tooth. We found signals characteristic of enamel, dentin, and dental pulp, respectively, in mass spectra obtained from normal teeth. Ion images reconstructed using these signals showed anatomical structures of the tooth clearly. Next, we performed IMS upon teeth of periodontal disease. Overall characteristic of the mass spectrum appeared similar to normal ones. However, ion images reconstructed using signals from the tooth of periodontal disease revealed loss of periodontal ligament visualized together with dental pulp in normal teeth. 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In periodontal disease, inflammation at periodontal tissue is thought as predominant, and its effect against tooth itself remains unclear. In this study, we applied matrix-assisted laser desorption/ionization imaging mass spectrometry (IMS) to teeth for the first time. By comparing anatomical structure of tooth affected with periodontal disease with normal ones, we analyzed traces of the disease on tooth. We found signals characteristic of enamel, dentin, and dental pulp, respectively, in mass spectra obtained from normal teeth. Ion images reconstructed using these signals showed anatomical structures of the tooth clearly. Next, we performed IMS upon teeth of periodontal disease. Overall characteristic of the mass spectrum appeared similar to normal ones. However, ion images reconstructed using signals from the tooth of periodontal disease revealed loss of periodontal ligament visualized together with dental pulp in normal teeth. 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In periodontal disease, inflammation at periodontal tissue is thought as predominant, and its effect against tooth itself remains unclear. In this study, we applied matrix-assisted laser desorption/ionization imaging mass spectrometry (IMS) to teeth for the first time. By comparing anatomical structure of tooth affected with periodontal disease with normal ones, we analyzed traces of the disease on tooth. We found signals characteristic of enamel, dentin, and dental pulp, respectively, in mass spectra obtained from normal teeth. Ion images reconstructed using these signals showed anatomical structures of the tooth clearly. Next, we performed IMS upon teeth of periodontal disease. Overall characteristic of the mass spectrum appeared similar to normal ones. However, ion images reconstructed using signals from the tooth of periodontal disease revealed loss of periodontal ligament visualized together with dental pulp in normal teeth. Moreover, ion image clearly depicted an accumulation of signal at m / z 496.3 at root surface. Such an accumulation that cannot be examined only from mass spectrum was revealed by utilization of IMS. Recent studies about inflammation revealed that the signal at m / z 496.3 reflects lyso-phosphatidylcholine (LPC). Infiltration of the signal is statistically significant, and its intensity profile exhibited the influence has reached deeply into the tooth. This suggests that influence of periodontal disease is not only inflammation of periodontal tissue but also infiltration of LPC to root surface, and therefore, anti-inflammatory treatment is required besides conventional treatments.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>23727733</pmid><doi>10.1007/s00216-013-7075-y</doi><tpages>9</tpages></addata></record>
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subjects Analytical Chemistry
Bacteria
Biochemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Choline
Dental enamel
Dental Enamel - metabolism
Dental Enamel - pathology
Dental pulp
Dental Pulp - metabolism
Dental Pulp - pathology
Dentin
Dentin - metabolism
Dentin - pathology
Desorption
Diagnosis
Diagnostic Imaging - methods
Disease prevention
Food Science
Gum disease
Health aspects
Humans
Image Processing, Computer-Assisted
Infiltration
Inflammation
Inflammation - diagnosis
Inflammation - metabolism
Inflammation - pathology
Ionization
Laboratory Medicine
Lasers
Ligaments
Lysophosphatidylcholines - analysis
Lysophosphatidylcholines - metabolism
Mass spectra
Mass spectrometry
Methods
Monitoring/Environmental Analysis
Morphology
Periodontal disease
Periodontal diseases
Periodontal Diseases - diagnosis
Periodontal Diseases - metabolism
Periodontal Diseases - pathology
Periodontal Ligament - metabolism
Periodontal Ligament - pathology
Research Paper
Scientific imaging
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - methods
Teeth
Tooth Root - metabolism
Tooth Root - pathology
title Matrix-assisted laser desorption/ionization imaging mass spectrometry revealed traces of dental problem associated with dental structure
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