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Nishi H, Kajiya M, Ohta K, Shigeishi H, Obayashi T, Munenaga S, Obayashi N, Yoshioka Y, Konishi M, Naruse T, Matsumoto A, Odo A, Kitagawa M, Ando T, Shintani T, Tokikazu T, Ino N, Mihara N, Kakimoto N, Tsuga K, Tanimoto K, Ohge H, Kurihara H, Kawaguchi H. Relationship of oral bacterial number with medical hospitalization costs in analysis of Diagnosis Procedure Combination database from single institution in Japan. Sci Rep 2024; 14:11114. [PMID: 38750118 PMCID: PMC11096395 DOI: 10.1038/s41598-024-60733-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 04/26/2024] [Indexed: 05/18/2024] Open
Abstract
Oral bacteria are known to be associated with perioperative complications during hospitalization. However, no presented reports have clarified the relationship of oral bacterial number with medical costs for inpatients. The Diagnosis Procedure Combination (DPC) database system used in Japan provides clinical information regarding acute hospital patients. The present study was conducted to determine the association of oral bacterial numbers in individual patients treated at a single institution with length of hospital stay and medical costs using DPC data. A total of 2369 patients referred by the medical department to the dental department at Hiroshima University Hospital were divided into the low (n = 2060) and high (n = 309) oral bacterial number groups. Length of hospital stay and medical costs were compared between the groups, as well as the associations of number of oral bacteria with Charlson comorbidity index (CCI)-related diseases in regard to mortality and disease severity. There was no significant difference in hospital stay length between the low (24.3 ± 24.2 days) and high (22.8 ± 20.1 days) oral bacterial number groups. On the other hand, the daily hospital medical cost in the high group was significantly greater (US$1456.2 ± 1505.7 vs. US$1185.7 ± 1128.6, P < 0.001). Additionally, there was no significant difference in CCI score between the groups, whereas the daily hospital medical costs for patients in the high group treated for cardiovascular disease or malignant tumors were greater than in the low number group (P < 0.05). Multivariate regression analysis was also performed, which showed that oral bacterial number, age, gender, BMI, cardiovascular disease, diabetes, malignant tumor, and hospital stay length were independently associated with daily hospitalization costs. Monitoring and oral care treatment to lower the number of oral bacteria in patients affected by cardiovascular disease or cancer may contribute to reduce hospitalization costs.
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Affiliation(s)
- Hiromi Nishi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
| | - Mikihito Kajiya
- Department of Innovation and Precision Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Department of Oral Laboratory Center, Hiroshima University Hospital, Hiroshima, Japan
| | - Kouji Ohta
- Department of Public Oral Health, Program of Oral Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Taiji Obayashi
- Department of Dental Hygiene, Ogaki Women's College, Gifu, Japan
| | - Syuichi Munenaga
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Nami Obayashi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
- Department of Oral Laboratory Center, Hiroshima University Hospital, Hiroshima, Japan
| | - Yukio Yoshioka
- Department of Oral Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masaru Konishi
- Department of Oral and Maxillofacial Radiology, Hiroshima University Hospital, Hiroshima, Japan
| | - Takako Naruse
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akihiro Matsumoto
- Department of Medical Informatics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ayaka Odo
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masae Kitagawa
- Department of Oral Laboratory Center, Hiroshima University Hospital, Hiroshima, Japan
- Department of Oral and Maxillofacial Pathobiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Toshinori Ando
- Department of Oral Laboratory Center, Hiroshima University Hospital, Hiroshima, Japan
- Department of Oral and Maxillofacial Pathobiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tomoaki Shintani
- Department of Oral Laboratory Center, Hiroshima University Hospital, Hiroshima, Japan
| | - Tomoko Tokikazu
- Department of Clinical Practice and Support, Hiroshima University Hospital, Hiroshima, Japan
| | - Natsumi Ino
- Department of Clinical Practice and Support, Hiroshima University Hospital, Hiroshima, Japan
| | - Naoki Mihara
- Department of Medical Informatics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Naoya Kakimoto
- Department of Oral and Maxillofacial Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiro Tsuga
- Department of Advanced Prosthodontics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kotaro Tanimoto
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima, Japan
| | | | - Hiroyuki Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
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Julius LAN, Akgül D, Krishnan G, Falk F, Korvink J, Badilita V. Portable dielectrophoresis for biology: ADEPT facilitates cell trapping, separation, and interactions. MICROSYSTEMS & NANOENGINEERING 2024; 10:29. [PMID: 38434587 PMCID: PMC10907756 DOI: 10.1038/s41378-024-00654-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/04/2023] [Accepted: 01/12/2024] [Indexed: 03/05/2024]
Abstract
Dielectrophoresis is a powerful and well-established technique that allows label-free, non-invasive manipulation of cells and particles by leveraging their electrical properties. The practical implementation of the associated electronics and user interface in a biology laboratory, however, requires an engineering background, thus hindering the broader adoption of the technique. In order to address these challenges and to bridge the gap between biologists and the engineering skills required for the implementation of DEP platforms, we report here a custom-built, compact, universal electronic platform termed ADEPT (adaptable dielectrophoresis embedded platform tool) for use with a simple microfluidic chip containing six microelectrodes. The versatility of the open-source platform is ensured by a custom-developed graphical user interface that permits simple reconfiguration of the control signals to address a wide-range of specific applications: (i) precision positioning of the single bacterium/cell/particle in the micrometer range; (ii) viability-based separation by achieving a 94% efficiency in separating live and dead yeast; (iii) phenotype-based separation by achieving a 96% efficiency in separating yeast and Bacillus subtilis; (iv) cell-cell interactions by steering a phagocytosis process where a granulocyte engulfs E. coli RGB-S bacterium. Together, the set of experiments and the platform form a complete basis for a wide range of possible applications addressing various biological questions exploiting the plug-and-play design and the intuitive GUI of ADEPT.
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Affiliation(s)
- Lourdes Albina Nirupa Julius
- Department, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 Baden-Württemberg Germany
| | - Dora Akgül
- Department, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 Baden-Württemberg Germany
| | - Gowri Krishnan
- Department, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 Baden-Württemberg Germany
| | - Fabian Falk
- Department, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 Baden-Württemberg Germany
| | - Jan Korvink
- Department, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 Baden-Württemberg Germany
| | - Vlad Badilita
- Department, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 Baden-Württemberg Germany
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Nishi H, Horikoshi S, Ohta K, Yoshida T, Fukushima N, Oshita K, Munenaga S, Edahiro T, Ureshino H, Shigeishi H, Yoshioka Y, Konishi M, Ide N, Ogawa Y, Marukawa R, Shintani T, Ino N, Kajiya M, Kakimoto N, Ohge H, Ichinohe T, Kawaguchi H. Efficacy of Low-Level Laser Therapy for Oral Mucositis in Hematologic Patients Undergoing Transplantation: A Single-Arm Prospective Study. J Pers Med 2023; 13:1603. [PMID: 38003918 PMCID: PMC10672422 DOI: 10.3390/jpm13111603] [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: 10/04/2023] [Revised: 10/27/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Oral mucositis significantly affects the quality of life in hematologic cancer patients undergoing hematopoietic stem cell transplantation. Despite global evidence supporting the efficacy of low-level laser therapy (LLLT) for mucositis prevention, its clinical adoption in Japan is limited. This study aimed to fill this gap by evaluating the safety and efficacy of LLLT in a Japanese patient population. In a single-group, non-blinded, exploratory trial, we compared 21 LLLT-treated patients against a historical control of 96 patients. The primary endpoint was the incidence of Grade ≥ 2 mucositis, based on NCI-CTCAE ver. 4.0. The LLLT group showed a significantly lower incidence of Grade ≥ 2 mucositis (23.8%) compared to the control group (64.6%) (p = 0.0006). Furthermore, Grade ≥ 2 mucositis correlated with increased oral dryness and longer hospital stays. Our study confirms the efficacy of LLLT in reducing the onset of severe oral mucositis among Japanese hematologic cancer patients, advocating for its clinical introduction as a preventive measure in Japan.
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Affiliation(s)
- Hiromi Nishi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3, Kasumi, Minami-Ku, Hiroshima 734-8551, Japan; (S.H.); (S.M.); (N.I.); (H.K.)
| | - Susumu Horikoshi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3, Kasumi, Minami-Ku, Hiroshima 734-8551, Japan; (S.H.); (S.M.); (N.I.); (H.K.)
| | - Kouji Ohta
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (K.O.); (H.S.)
| | - Tetsumi Yoshida
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8551, Japan; (T.Y.); (T.E.); (H.U.); (T.I.)
| | - Noriyasu Fukushima
- Department of Internal Medicine, Karatsu Red Cross Hospital, Karatsu 847-8588, Japan;
| | - Kyoko Oshita
- Department of Anesthesiology, Hiroshima General Hospital, Hiroshima 734-8551, Japan;
| | - Syuichi Munenaga
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3, Kasumi, Minami-Ku, Hiroshima 734-8551, Japan; (S.H.); (S.M.); (N.I.); (H.K.)
| | - Taro Edahiro
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8551, Japan; (T.Y.); (T.E.); (H.U.); (T.I.)
| | - Hiroshi Ureshino
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8551, Japan; (T.Y.); (T.E.); (H.U.); (T.I.)
| | - Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (K.O.); (H.S.)
| | - Yukio Yoshioka
- Department of Oral Oncology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan;
| | - Masaru Konishi
- Department of Oral and Maxillofacial Radiology, Hiroshima University Hospital, Hiroshima 734-8551, Japan;
| | - Noriaki Ide
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3, Kasumi, Minami-Ku, Hiroshima 734-8551, Japan; (S.H.); (S.M.); (N.I.); (H.K.)
| | - Yuma Ogawa
- Department of Program of Dentistry, School of Dentistry, Hiroshima University, Hiroshima 734-8551, Japan; (Y.O.); (R.M.)
| | - Rikou Marukawa
- Department of Program of Dentistry, School of Dentistry, Hiroshima University, Hiroshima 734-8551, Japan; (Y.O.); (R.M.)
| | - Tomoaki Shintani
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8551, Japan; (T.S.); (M.K.)
| | - Natumi Ino
- Department of Clinical Practice and Support, Hiroshima University Hospital, Hiroshima 734-8551, Japan
| | - Mikihito Kajiya
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima 734-8551, Japan; (T.S.); (M.K.)
| | - Naoya Kakimoto
- Department of Oral and Maxillofacial Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan;
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima 734-8551, Japan;
| | - Tatsuo Ichinohe
- Department of Hematology and Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 734-8551, Japan; (T.Y.); (T.E.); (H.U.); (T.I.)
| | - Hiroyuki Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3, Kasumi, Minami-Ku, Hiroshima 734-8551, Japan; (S.H.); (S.M.); (N.I.); (H.K.)
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4
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Nishi H, Obayashi T, Ueda T, Ohta K, Shigeishi H, Munenaga S, Kono T, Yoshioka Y, Konishi M, Taga R, Toigawa Y, Naruse T, Ishida E, Tsuboi E, Oda K, Dainobu K, Tokikazu T, Tanimoto K, Kakimoto N, Ohge H, Kurihara H, Kawaguchi H. Head and neck cancer patients show poor oral health as compared to those with other types of cancer. BMC Oral Health 2023; 23:647. [PMID: 37674208 PMCID: PMC10483752 DOI: 10.1186/s12903-023-03356-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/25/2023] [Indexed: 09/08/2023] Open
Abstract
PURPOSE Several studies have found associations between periodontitis and various types of cancer. Since the site of head and neck cancer (HNC) has contiguity or proximity to the oral cavity, it may be particularly influenced by oral inflammation. This study aimed to determine whether HNC patients have poor oral health as compared to those with other types of cancer. METHODS This study retrospectively examined oral environmental factors including periodontal inflamed surface area (PISA), a new periodontal inflammatory parameter. A total of 1030 cancer patients were divided into the HNC (n = 142) and other cancer (n = 888) groups. Furthermore, the HNC group was divided into high (n = 71) and low (n = 71) PISA subgroups, and independent risk factors affecting a high PISA value were investigated. RESULTS Multivariate logistic regression analysis showed that number of missing teeth (odds ratio 1.72, 95% CI 1.15-2.56, P < 0.01), PISA (odds ratio 1.06, 95% CI 1.03-1.06, P < 0.05), and oral bacterial count (odds ratio 1.02, 95% CI 1.01-1.03, P < 0.01) were independent factors related to HNC. In addition, multivariate logistic regression analysis indicated that current smoker (odds ratio 7.51, 95% CI 1.63-34.71, P < 0.01) and presence of untreated dental caries (odds ratio 3.33, 95% CI 1.23-9.00, P < 0.05) were independent risk factors affecting high PISA values in HNC patients. CONCLUSION HNC patients have higher levels of gingival inflammation and poor oral health as compared to patients with other types of cancer, indicating that prompt oral assessment and an effective oral hygiene management plan are needed at the time of HNC diagnosis.
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Affiliation(s)
- Hiromi Nishi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
| | - Taiji Obayashi
- Department of Dental Hygiene, Ogaki Women's College, Gifu, Japan
| | - Tsutomu Ueda
- Department of Otorhinolaryngology, Head and Neck Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kouji Ohta
- Department of Public Oral Health, Program of Oral Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Syuichi Munenaga
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Takashi Kono
- Department of Otorhinolaryngology, Head and Neck Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yukio Yoshioka
- Department of Molecular Oral Medicine and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masaru Konishi
- Department of Oral and Maxillofacial Radiology, Hiroshima University Hospital, Hiroshima, Japan
| | - Ryotaro Taga
- Department of Program of Dentistry, School of Dentistry, Hiroshima University, Hiroshima, Japan
| | - Yuya Toigawa
- Department of Program of Dentistry, School of Dentistry, Hiroshima University, Hiroshima, Japan
| | - Takako Naruse
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Eri Ishida
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Eri Tsuboi
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kanae Oda
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kana Dainobu
- Department of Clinical Practice and Support, Hiroshima University Hospital, Hiroshima, Japan
| | - Tomoko Tokikazu
- Department of Clinical Practice and Support, Hiroshima University Hospital, Hiroshima, Japan
| | - Kotaro Tanimoto
- Department of Orthodontics and Craniofacial Developmental Biology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Naoya Kakimoto
- Department of Oral and Maxillofacial Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroki Ohge
- Department of Infectious Diseases, Hiroshima University Hospital, Hiroshima, Japan
| | - Hidemi Kurihara
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroyuki Kawaguchi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
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Stanke S, Wenger C, Bier FF, Hölzel R. AC electrokinetic immobilization of influenza virus. Electrophoresis 2022; 43:1309-1321. [DOI: 10.1002/elps.202100324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 12/26/2021] [Accepted: 01/06/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Sandra Stanke
- Fraunhofer Institute for Cell Therapy and Immunology Branch Bioanalytics and Bioprocesses (IZI‐BB) Potsdam‐Golm Germany
- Institute of Biochemistry and Biology University of Potsdam Potsdam‐Golm Germany
| | - Christian Wenger
- IHP – Leibnizinstitut für innovative Mikroelektronik Frankfurt/Oder Germany
- Brandenburg University of Technology Cottbus–Senftenberg Cottbus Germany
| | - Frank F. Bier
- Institute of Biochemistry and Biology University of Potsdam Potsdam‐Golm Germany
| | - Ralph Hölzel
- Fraunhofer Institute for Cell Therapy and Immunology Branch Bioanalytics and Bioprocesses (IZI‐BB) Potsdam‐Golm Germany
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Haryanto H, Jais S, Supriadi S, Imran I, Ogai K, Oe M, Okuwa M, Sugama J. Correlation Between Bacteria Count Using a Rapid Bacterium Counting System and Changes in Wound Area on Diabetic Foot Ulcers in Indonesia: A Prospective Study. INT J LOW EXTR WOUND 2022:15347346221098515. [PMID: 35521915 DOI: 10.1177/15347346221098515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study aimed to clarify the correlation between changes in bacterial number and wound area in diabetic foot ulcers (DFUs). This study used a prospective longitudinal cohort design. A total of 30 participants met the inclusion criteria. Changes in bacterial number and wound area were evaluated weekly until week 4. The chi-square test indicated no significant correlation between biofilm formation and wound area (p = 0.32) but a significant correlation between bacterial count and wound area (p = 0.05). Logistic regression analysis showed a significant correlation between bacterial count and changes in wound area (odds ratio, 0.60; 95% confidence interval [CI], 0.372-0.997; p = 0.04). The receiver operating characteristic analysis showed an area under the curve of 0.660 (95% CI, 0.52-0.79; p = 0.03) with a sensitivity of 97% and specificity of 88%. The present prospective longitudinal cohort study demonstrated the correlation between bacterial count changes and wound area in DFUs. Our results suggest that changes in bacterial count could help wound healing evaluations.
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Affiliation(s)
- Haryanto Haryanto
- 184383The Institute of Nursing Muhammadiyah/STIK Muhammadiyah, Pontianak, Indonesia
| | - Suriadi Jais
- 184383The Institute of Nursing Muhammadiyah/STIK Muhammadiyah, Pontianak, Indonesia
| | - Supriadi Supriadi
- Graduate Course of Nursing Sciences, Division of Health Sciences, 12858Kanazawa University, Japan
| | - Imran Imran
- Graduate Course of Nursing Sciences, Division of Health Sciences, 12858Kanazawa University, Japan
| | - Kazuhiro Ogai
- Department of Clinical Nursing, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Japan
| | - Makoto Oe
- Department of Clinical Nursing, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Japan
| | - Mayumi Okuwa
- Department of Clinical Nursing, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Japan
| | - Junko Sugama
- Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, Kanazawa University, Japan
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7
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The Association of Dietary Intake, Oral Health, and Blood Pressure in Older Adults: A Cross-Sectional Observational Study. Nutrients 2022; 14:nu14061279. [PMID: 35334938 PMCID: PMC8950359 DOI: 10.3390/nu14061279] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/12/2022] [Accepted: 03/14/2022] [Indexed: 12/10/2022] Open
Abstract
Hypertension is related to impaired mastication that causes malnutrition, declining the general health of older adults. This study assessed the role of dietary intake in the relationship between oral health and blood pressure. Eight hundred ninety-four adults aged ≥65 years who independently lived in rural regions of Japan participated in this study. Hypertension was classified according to the guidelines of the Japanese Society of Hypertension. The oral condition was evaluated by analyzing the remaining teeth, occlusal force, posterior occlusal support, masticatory performance, oral moisture, and oral bacterial level. Dietary intake was assessed using a brief self-administered dietary history questionnaire. Mann-Whitney U, chi-square, Kruskal-Wallis tests, and logistic regression analyses were used to elucidate the factors related to hypertension. Normotensive, hypertensive, and history of hypertension were observed in 30.9%, 23.8%, and 45.3% of the participants, respectively. The factors significantly associated with the hypertension were age, body mass index, posterior occlusal support condition, and sodium-to-potassium ratio related to salt intake and/or vegetable intake. Participants without posterior occlusion significantly had higher risk of hypertension (odds ratio = 1.72). This study suggested that there was an association between oral health and hypertension, while the loss of occlusal support may influence nutritional intake conditions.
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8
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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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Duncan JL, Davalos RV. A review: Dielectrophoresis for characterizing and separating similar cell subpopulations based on bioelectric property changes due to disease progression and therapy assessment. Electrophoresis 2021; 42:2423-2444. [PMID: 34609740 DOI: 10.1002/elps.202100135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 09/19/2021] [Accepted: 09/23/2021] [Indexed: 12/16/2022]
Abstract
This paper reviews the use of dielectrophoresis for high-fidelity separations and characterizations of subpopulations to highlight the recent advances in the electrokinetic field as well as provide insight into its progress toward commercialization. The role of cell subpopulations in heterogeneous clinical samples has been studied to deduce their role in disease progression and therapy resistance for instances such as cancer, tissue regeneration, and bacterial infection. Dielectrophoresis (DEP), a label-free electrokinetic technique, has been used to characterize and separate target subpopulations from mixed samples to determine disease severity, cell stemness, and drug efficacy. Despite its high sensitivity to characterize similar or related cells based on their differing bioelectric signatures, DEP has been slowly adopted both commercially and clinically. This review addresses the use of dielectrophoresis for the identification of target cell subtypes in stem cells, cancer cells, blood cells, and bacterial cells dependent on cell state and therapy exposure and addresses commercialization efforts in light of its sensitivity and future perspectives of the technology, both commercially and academically.
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Affiliation(s)
- Josie L Duncan
- Bioelectromechanical Systems Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia, USA.,Bioelectromechanical Systems Laboratory, Wake Forest School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia, USA
| | - Rafael V Davalos
- Bioelectromechanical Systems Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia, USA.,Bioelectromechanical Systems Laboratory, Wake Forest School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia, USA
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10
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Matsuo K, Sekimoto Y, Okamoto M, Shibata S, Otaka Y. Association between oral health status and oral food intake level in subacute stroke patients admitted to a convalescent rehabilitation unit. Gerodontology 2021; 39:67-73. [PMID: 34448242 DOI: 10.1111/ger.12586] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/13/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Stroke patients often suffer from dysphagia during their recovery. We hypothesised that subacute stroke patients with dysphagia had more deteriorated oral health status including muscle strength and motor function. OBJECTIVE Quantitatively investigate oral health status and identify associations with oral feeding status in stroke patients admitted to a convalescent rehabilitation unit. METHODS We prospectively recruited 187 stroke patients admitted to a convalescent rehabilitation unit. Oral feeding status was examined using the Functional Oral Intake Scale (FOIS), and the cohort was divided into three groups based on FOIS score as non-oral feeding (FOIS-123; 22 patients), dysphagic diet (FOIS-45; 74 patients), and regular diet (FOIS-67; 91 patients) groups. Activities of daily living (ADL) were assessed with the Functional Independence Measure (FIM). Oral health status was measured quantitatively in six oral function parameters and Oral Health Assessment Tool (OHAT), and differences according to the FOIS, age and FIM were statistically tested. RESULTS In bivariate analysis, two parameters, tongue pressure and tongue-lip motor functions were significantly higher in the regular diet group than in the other groups (P < .01). Gross OHAT score was also significantly better in the regular diet group than in the other groups (P < .01). These significant associations mostly remained in the multiple model after adjusting for age and FIM. CONCLUSION This study suggests that, amongst oral health status, tongue strength and motor function, as well as OHAT score, may have strong associations with oral feeding status in subacute stroke patients at convalescent rehabilitation units regardless of ADL levels.
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Affiliation(s)
- Koichiro Matsuo
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Aichi, Japan.,Department of Oral Health Sciences for Community Welfare, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yu Sekimoto
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Aichi, Japan
| | - Mieko Okamoto
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Aichi, Japan
| | - Seiko Shibata
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, Aichi, Japan
| | - Yohei Otaka
- Department of Rehabilitation Medicine I, School of Medicine, Fujita Health University, Aichi, Japan
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11
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Osako R, Matsuda Y, Itohara C, Sukegawa-Takahashi Y, Sukegawa S, Okuma S, Furuki Y, Kanno T. Relationship between Oral Bacterial Count and Postoperative Complications among Patients with Cardiovascular Disease Treated by Surgery: A Retrospective Cohort Study. Healthcare (Basel) 2021; 9:healthcare9070850. [PMID: 34356228 PMCID: PMC8304811 DOI: 10.3390/healthcare9070850] [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: 04/23/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 11/18/2022] Open
Abstract
In this retrospective observational study, we evaluated the relationship between perioperative oral bacterial counts and postoperative complications in cardiovascular disease (CVD) patients. From April 2012 to December 2018, all patients scheduled for surgery received perioperative oral management (POM) by oral specialists at a single center. Tongue dorsum bacterial counts were measured on the pre-hospitalization day, preoperatively, and postoperatively. Background data were collected retrospectively. Among the 470 consecutive patients, the postoperative complication incidence rate was 10.4% (pericardial fluid storage, n = 21; postoperative pneumonia, n = 13; surgical site infection, n = 9; mediastinitis, n = 2; and seroma, postoperative infective endocarditis, lung torsion, and pericardial effusion, n = 1 each). Oral bacterial counts were significantly higher in the pre-hospitalization than in the pre- and postoperative samples (p < 0.05). Sex, cerebrovascular disease, and operation time differed significantly between complications and no-complications groups (p < 0.05). Multivariate analysis with propensity score adjustment showed a significant association between postoperative oral bacterial count and postoperative complications (odds ratio 1.26; 95% confidence interval, 1.00–1.60; p = 0.05). Since the development of cardiovascular complications is a multifactorial process, the present study cannot show that POM reduces complications but indicates POM may prevent complications in CVD patients.
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Affiliation(s)
- Rie Osako
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine & Oral Care Center, Shimane University Hospital, Izumo 693-8501, Japan; (R.O.); (Y.M.); (C.I.); (S.O.)
| | - Yuhei Matsuda
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine & Oral Care Center, Shimane University Hospital, Izumo 693-8501, Japan; (R.O.); (Y.M.); (C.I.); (S.O.)
| | - Chieko Itohara
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine & Oral Care Center, Shimane University Hospital, Izumo 693-8501, Japan; (R.O.); (Y.M.); (C.I.); (S.O.)
| | - Yuka Sukegawa-Takahashi
- Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, Takamatsu 760-8557, Japan; (Y.S.-T.); (S.S.); (Y.F.)
| | - Shintaro Sukegawa
- Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, Takamatsu 760-8557, Japan; (Y.S.-T.); (S.S.); (Y.F.)
| | - Satoe Okuma
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine & Oral Care Center, Shimane University Hospital, Izumo 693-8501, Japan; (R.O.); (Y.M.); (C.I.); (S.O.)
| | - Yoshihiko Furuki
- Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, Takamatsu 760-8557, Japan; (Y.S.-T.); (S.S.); (Y.F.)
| | - Takahiro Kanno
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine & Oral Care Center, Shimane University Hospital, Izumo 693-8501, Japan; (R.O.); (Y.M.); (C.I.); (S.O.)
- Correspondence: ; Tel.: +81-853-20-2301
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12
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Hyler AR, Hong D, Davalos RV, Swami NS, Schmelz EM. A novel ultralow conductivity electromanipulation buffer improves cell viability and enhances dielectrophoretic consistency. Electrophoresis 2021; 42:1366-1377. [PMID: 33687759 DOI: 10.1002/elps.202000324] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/23/2021] [Accepted: 02/27/2021] [Indexed: 12/21/2022]
Abstract
Cell separation has become a critical diagnostic, research, and treatment tool for personalized medicine. Despite significant advances in cell separation, most widely used applications require the use of multiple, expensive antibodies to known markers in order to identify subpopulations of cells for separation. Dielectrophoresis (DEP) provides a biophysical separation technique that can target cell subpopulations based on phenotype without labels and return native cells for downstream analysis. One challenge in employing any DEP device is the sample being separated must be transferred into an ultralow conductivity medium, which can be detrimental in retaining cells' native phenotypes for separation. Here, we measured properties of traditional DEP reagents and determined that after just 1-2 h of exposure and subsequent culture, cells' viability was significantly reduced below 50%. We developed and tested a novel buffer (Cyto Buffer) that achieved 6 weeks of stable shelf-life and demonstrated significantly improved viability and physiological properties. We then determined the impact of Cyto Buffer on cells' dielectric properties and morphology and found that cells retained properties more similar to that of their native media. Finally, we vetted Cyto Buffer's usability on a cell separation platform (Cyto R1) to determine combined efficacy for cell separations. Here, more than 80% of cells from different cell lines were recovered and were determined to be >70% viable following exposure to Cyto Buffer, flow stimulation, electromanipulation, and downstream collection and growth. The developed buffer demonstrated improved opportunities for electrical cell manipulation, enrichment, and recovery for next generation cell separations.
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Affiliation(s)
| | - Daly Hong
- CytoRecovery, Inc., Blacksburg, VA, USA
| | - Rafael V Davalos
- Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA
| | - Nathan S Swami
- Electrical and Computer Engineering, University of Virginia, Charlottesville, VA, USA
| | - Eva M Schmelz
- Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA.,Human Nutrition, Foods and Exercise, Virginia Tech, Blacksburg, VA, USA
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13
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Kwizera EA, Sun M, White AM, Li J, He X. Methods of Generating Dielectrophoretic Force for Microfluidic Manipulation of Bioparticles. ACS Biomater Sci Eng 2021; 7:2043-2063. [PMID: 33871975 PMCID: PMC8205986 DOI: 10.1021/acsbiomaterials.1c00083] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Manipulation of microscale bioparticles including living cells is of great significance to the broad bioengineering and biotechnology fields. Dielectrophoresis (DEP), which is defined as the interactions between dielectric particles and the electric field, is one of the most widely used techniques for the manipulation of bioparticles including cell separation, sorting, and trapping. Bioparticles experience a DEP force if they have a different polarization from the surrounding media in an electric field that is nonuniform in terms of the intensity and/or phase of the electric field. A comprehensive literature survey shows that the DEP-based microfluidic devices for manipulating bioparticles can be categorized according to the methods of creating the nonuniformity via patterned microchannels, electrodes, and media to generate the DEP force. These methods together with the theory of DEP force generation are described in this review, to provide a summary of the methods and materials that have been used to manipulate various bioparticles for various specific biological outcomes. Further developments of DEP-based technologies include identifying materials that better integrate with electrodes than current popular materials (silicone/glass) and improving the performance of DEP manipulation of bioparticles by combining it with other methods of handling bioparticles. Collectively, DEP-based microfluidic manipulation of bioparticles holds great potential for various biomedical applications.
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Affiliation(s)
- Elyahb A. Kwizera
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Mingrui Sun
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio 43210, USA
| | - Alisa M. White
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Jianrong Li
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH 43210, USA
| | - Xiaoming He
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio 43210, USA
- Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742, USA
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD 21201, USA
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14
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Changes in Physical and Oral Function after a Long-Term Care Prevention Program in Community-Dwelling Japanese Older Adults: A 12-Month Follow-Up Study. Healthcare (Basel) 2021; 9:healthcare9060719. [PMID: 34208151 PMCID: PMC8230795 DOI: 10.3390/healthcare9060719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/03/2021] [Accepted: 06/09/2021] [Indexed: 11/17/2022] Open
Abstract
Background: The aim of this prospective cohort study was to clarify changes in physical and oral function in older adults after completing a 3-month health program combining physical and oral exercise, oral health instruction, and nutritional guidance. Methods: Subjects were 34 women aged at least 70 years (mean age 79.2 years) in Bungotakada City, Oita Prefecture, Japan. Physical and oral function was investigated on the first day (baseline), at the end of the program, and 6 and 12 months after completing the health program. Physical function was measured using handgrip strength test, timed up and go (TUG) test and one-leg standing time test. Oral diadochokinesis test and repetitive saliva swallowing test (RSST) were employed to assess oral function. Results: TUG scores were significantly lower at 6 and 12 months than at baseline in participants aged ≥70 and <80 years. The repetition rate of the monosyllables /pa/, /ta/, and /ka/ was improved at the end of program in participants aged ≥70 and <80 years and increased to more than 6 times/second at 12 months. Conclusions: Our 3-month health program maintained improvements in oral and physical function in older women 1 year after completing the program.
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15
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Su CY, Shigeishi H, Murodumi H, SugiyaMa M, Ohta K, Takemoto T. Association of oral Epstein-Barr virus with periodontal health in Japanese adults. Exp Ther Med 2021; 22:767. [PMID: 34055066 DOI: 10.3892/etm.2021.10199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/15/2020] [Indexed: 12/13/2022] Open
Abstract
Previous studies have demonstrated that oral Epstein-Barr virus (EBV) is associated with periodontitis. However, the relationship between periodontitis and oral EBV has not been fully elucidated by reducing the effects of confounding factors. The aim of the present study was to clarify the association between oral Epstein-Barr virus (EBV) and oral health status among middle-aged and older Japanese individuals. A total of 124 patients (46 males and 78 females; mean age, 69.2 years; age range, 35-90 years) who visited Hiroshima University Hospital between October 2018 and December 2019 were recruited into the present study. EBV DNA positivity was determined in 124 oral rinse samples using quantitative PCR. Periodontal disease-related bacteria were also detected by PCR analysis. EBV DNA was determined as positive in 16 of the 124 enrolled patients (12.9%). No significant difference was identified between EBV DNA and clinical factors (sex, age, remaining teeth, denture use, smoking or medical history). Of the 38 patients with periodontal pockets ≥6 mm, 10 were EBV DNA positive (26.3%). There was a significant association between EBV DNA positivity and probing depth (P=0.01). Additionally, a significant association was identified between bleeding on probing (BOP) and EBV DNA positivity (P=0.03). To investigate the relationship between EBV and periodontal health status, propensity score-matching was determined between participants without ≥4 mm periodontal pockets and BOP (participants with good periodontal health) and those with ≥4 mm periodontal pockets, BOP or both (participants with poor periodontal health). A total of 35 matched pairs were identified among the patients. Patients with poor periodontal health exhibited a higher EBV DNA positivity rate (25.7%) than those with good periodontal health (0.0%). Additionally, there was a significant association between EBV DNA positivity and periodontal health status (P=0.001). T. denticola-positive participants exhibited a higher EBV DNA positivity rate than negative participants (17.6 vs. 9.6%). However, there was no significant difference. The results indicated that oral EBV may be markedly associated with periodontitis in middle-aged and older Japanese individuals.
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Affiliation(s)
- Cheng-Yih Su
- Department of Oral Health Management, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Hiroshi Murodumi
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Masaru SugiyaMa
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Kouji Ohta
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Toshinobu Takemoto
- Department of Oral Health Management, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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16
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Shigeishi H, Su CY, Kaneyasu Y, Matsumura M, Nakamura M, Ishikawa M, Saito A, Ohta K, Sugiyama M. Association of oral HPV16 infection with periodontal inflammation and the oral microbiome in older women. Exp Ther Med 2020; 21:167. [PMID: 33456534 DOI: 10.3892/etm.2020.9598] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/29/2020] [Indexed: 12/11/2022] Open
Abstract
The present preliminary study aimed to investigate the association between oral human papillomavirus type 16 (HPV16) DNA prevalence and periodontal inflammation in older women. The association between oral HPV16 infection and oral health status has not been fully elucidated in older Japanese women. The present study investigated older women aged ≥60 years who visited Hiroshima University Hospital. The present study excluded subjects with clinical factors affecting HPV infection, such as current smoking, oral cancer and pre-malignant lesions, and immunodeficiency. Finally, 46 female patients (mean age, 74.6 years) were analyzed. Quantitative PCR analysis was performed to detect HPV16 DNA in oral rinse samples. A total of 4 participants (8.7%) were HPV16 DNA positive. There was a significant association between the HPV16 DNA positivity rate and bleeding on probing (P=0.03). Additionally, Prevotella intermedia positive cases exhibited a significantly higher HPV16 DNA positivity rate than negative cases (33.3 vs 3.8%). Furthermore, analysis of 16S ribosomal RNA in bacterial flora was performed to examine microbiome diversity in participants with ≥6 mm periodontal pockets and bleeding on probing. Importantly, the average percentage of Porphyromonas was significantly higher in HPV16 DNA positive cases compared with in HPV16 DNA negative cases (5.57 vs. 1.44%). By contrast, the average percentage of Veillonella was significantly lower in HPV16 DNA positive cases than in HPV16 DNA negative cases (2.43 vs. 8.51%). Prevotella was also lower in HPV16 DNA positive cases than in HPV16 DNA negative cases (4.0 vs. 8.23%). These results indicated that people with both deep periodontal pocket inflammation and oral HPV16 infection may not have Prevotella- or Veillonella-dominant oral microbiomes, and their microbiomes may exhibit their own distinctive characteristics. In conclusion, the results suggested that oral HPV16 infection may be associated with periodontal inflammation in older Japanese women. Further research is required to clarify the detailed association between oral HPV infection and the oral microbiome.
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Affiliation(s)
- Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Cheng-Yih Su
- Department of Oral Health Management, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Yoshino Kaneyasu
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Mari Matsumura
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Mariko Nakamura
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Momoko Ishikawa
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Ayumi Saito
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Kouji Ohta
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Masaru Sugiyama
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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17
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Wu TY, Liu HY, Wu CY, Chen HC, Huang ST, Chen PH. Professional oral care in end-of-life patients with advanced cancers in a hospice ward: improvement of oral conditions. BMC Palliat Care 2020; 19:181. [PMID: 33246449 PMCID: PMC7697385 DOI: 10.1186/s12904-020-00684-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 11/10/2020] [Indexed: 11/21/2022] Open
Abstract
Background In end-of-life patients with advanced cancers, oral examination, oral care, and oral re-examination are crucial. Although oral symptoms are among the major complaints of end-of-life patients, few studies have focused on oral care in these patients. In this study, the association between oral symptoms and oral dryness among end-of-life patients was examined, and improvement of oral conditions after oral care interventions by a professional dentist was quantified. Methods This prospective intervention study included 27 terminally ill patients with advanced cancers in a hospice ward. Professional oral care was administered every morning, and the improvement of oral conditions was assessed by comparing oral conditions before and after the intervention. Oral assessment was performed using the Oral Health Assessment Tool (OHAT) and Oral Assessment Guide. Oral dryness was evaluated through Clinical Diagnosis Classification of oral dryness and an oral moisture device. Oral cleanliness was evaluated using a bacterial counter, and tongue smears were collected for Candida examination; furthermore, oral function was recorded. Results The presence of oral mucositis was closely associated with severe oral dryness (odds ratio [OR] = 14.93; 95% confidence interval [CI]: 1.95–114.38). The level of oral debris retention was significantly related to the degree of oral dryness (OR = 15.97; 95% CI: 2.06–123.72). The group with higher scores (OHAT > 8), which represent poor oral conditions, showed severe oral dryness (OR = 17.97; 95% CI: 1.45–223.46). Total OHAT scores (median: 7 vs 2) and those of other subgroups (lip, tongue, gums and tissues, saliva, and oral cleanliness showed a significant decrease after the intervention. Furthermore, the occurrence of mucositis (47.1% vs 0%), candidiasis rate (68.8% vs 43.8%), oral dryness self-sensation (63.6% vs 9.1%), and severe oral debris (52.9% vs 11.8%) decreased significantly. Conclusions Proper oral care can improve oral health and hygiene, reduce the rate of mucositis, reduce the sensation of oral dryness, increase oral moisture, and reduce the chances of oral infections among end-of-life patients. Daily oral care is necessary and can alleviate oral discomfort, increase food intake, and increase the chances of communication between end-of-life patients and their families. Supplementary Information Supplementary information accompanies this paper at 10.1186/s12904-020-00684-0.
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Affiliation(s)
- Ting-Ying Wu
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Hsiu-Yueh Liu
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Chien-Yi Wu
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Hung-Cheng Chen
- Department of Nursing, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Shun-Te Huang
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan. .,Division of Special Care Dentistry, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, 80708, Taiwan.
| | - Ping-Ho Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan. .,Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan. .,Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan. .,Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan.
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18
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Matsuo K, Kito N, Ogawa K, Izumi A, Kishima M, Itoda M, Masuda Y. Improvement of oral hypofunction by a comprehensive oral and physical exercise programme including textured lunch gatherings. J Oral Rehabil 2020; 48:411-421. [PMID: 33128790 DOI: 10.1111/joor.13122] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 10/26/2020] [Indexed: 11/30/2022]
Abstract
The deterioration of oral function to a state of oral hypofunction (OHF) is reportedly associated with malnutrition and frailty. Thus, we Investigated the association of OHF with physical characteristics and function and test the effects of a programme including comprehensive oral and physical exercises and textured lunch gatherings (COPE-TeL programme) on oral and physical function in older adults with OHF. Eighty-six community-dwelling older adults were randomly assigned into control (n = 43) or intervention (n = 43) groups. The participants were further divided into OHF and normal oral function (NOF) sub-groups based on initial oral examinations. The intervention group participated in the 12-week COPE-TeL programme, while the control group performed the physical exercise regimen only. The differences in measured variables for physical and oral function between the OHF and NOF groups were statistically tested, and changes in the proportion of participants with OHF were examined. Physical function, such as hand grip strength and walking speed, was significantly lower in the OHF group at the initial assessment. The proportion of participants with OHF was 56% in the intervention group and 67% in the control group before the trial, which became significantly reduced after completing the COPE-TeL programme in the intervention group (26%, P = .002), but not in the controls (61%, P = .549). Older adults with OHF may have diminished physical function. The COPE-TeL programme of oral and physical exercises along with textured lunch gatherings may be effective for older adults with OHF.
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Affiliation(s)
- Koichiro Matsuo
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Aichi, Japan
| | - Norie Kito
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Aichi, Japan
| | | | | | - Masako Kishima
- Department of Dentistry, Wakakusa Tatsuma Rehabilitation Hospital, Daito, Japan
| | - Masataka Itoda
- Department of Oral Health Sciences, Osaka Dental University Faculty of Health Sciences, Osaka, Japan
| | - Yuji Masuda
- Division of Oral and Maxillofacial Biology, Institute for Oral Science, Matsumoto Dental University, Shiojiri, Japan
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19
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Relationship between Oral Health Status and Postoperative Fever among Patients with Lung Cancer Treated by Surgery: A Retrospective Cohort Study. Healthcare (Basel) 2020; 8:healthcare8040405. [PMID: 33081131 PMCID: PMC7712858 DOI: 10.3390/healthcare8040405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/10/2020] [Accepted: 10/15/2020] [Indexed: 02/08/2023] Open
Abstract
A retrospective observational study using an oral bacteria counter was conducted to evaluate the trends in the number of oral bacteria in the perioperative period of lung cancer patients and to verify the relationship between oral health status and postoperative fever. All patients received perioperative oral management (POM) by oral specialists between April 2012 and December 2018 at Kagawa Prefectural Central Hospital, Kagawa, Japan prior to lung cancer surgery. Bacteria counts from the dorsum of the tongue were measured on the day of pre-hospitalization, pre-operation, and post-operation, and background data were also collected retrospectively. In total, 441 consecutive patients were enrolled in the study. Bonferroni’s multiple comparison test showed significantly higher oral bacteria counts at pre-hospitalization compared to pre- and post-operation (p < 0.001). Logistic regression analysis showed that body mass index, performance status, number of housemates, number of teeth, and white blood cell count at pre-operation were significantly associated with postoperative fever. The study showed that POM can reduce the level of oral bacterial counts, that the risk of postoperative complications is lower with dentulous patients, and that appropriate POM is essential for prevent of complications. Therefore, POM may play an important role in perioperative management of lung cancer patients.
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Arai Y, Inanobe-Takatsuka M, Takashima M, Ogawa S, Kawamura A, Nohno K, Uoshima K. Reducing bacterial counts around the abutment following professional mechanical plaque removal at the implant bridge: A randomized crossover comparison of removing or not removing the superstructure. J Prosthodont Res 2020; 65:91-96. [PMID: 32938869 DOI: 10.2186/jpr.jpor_2019_431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE The purpose of this study was to determine whether removing the superstructure of the implant bridge in cases of full-arch implant restorations for edentulous atrophic arches at the abutment level during professional mechanical plaque removal (PMPR) affects bacterial counts. METHODS This crossover clinical trial included 20 patients who received screw-retained prostheses at the abutment level. Patients were randomly assigned to two groups and received PMPR with or without removal of the superstructure. After a three-month washout period, the type of treatment was reversed between the groups. Bacterial counts around the cylinder and abutment were measured and compared before and after PMPR. RESULTS Bacterial numbers around the cylinder and abutment were significantly reduced after PMPR as compared with before PMPR regardless of whether the superstructure was removed (p <0.05). However the ratio of subjects with bacteria at 1.0 × 105 colony forming unit/ml (cfu/ml) or more after PMPR was significantly higher when the superstructure was not removed (p < 0.05). Among patients with bacterial counts of less than 10 × 105 cfu/ml, bacterial loads were reduced to less than 1.0 × 105 cfu/ml even when superstructures were not removed. Among patients with bacterial load of >10 × 105 cfu/ml, bacterial numbers were not reduced to <1.0 × 105 cfu/ml when PMPR was performed without removing the superstructure. CONCLUSIONS Removal of the superstructure in cases of full-arch implant restorations for edentulous atrophic arches during PMPR reduces bacterial numbers around the implant bridge at the abutment level.
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Affiliation(s)
- Yoshiaki Arai
- Oral Implant and Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital, Niigata
| | | | - Makiko Takashima
- Oral Implant and Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital, Niigata
| | - Shin Ogawa
- Oral Implant and Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital, Niigata
| | - Atsushi Kawamura
- Oral Implant and Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital, Niigata
| | - Kaname Nohno
- Division of Preventive Dentistry, Niigata University Graduate School of Medical and Dental Sciences, Niigata
| | - Katsumi Uoshima
- Oral Implant and Temporomandibular Joint Clinic, Niigata University Medical and Dental Hospital, Niigata.,Division of Bioprosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata
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21
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Henslee EA. Review: Dielectrophoresis in cell characterization. Electrophoresis 2020; 41:1915-1930. [DOI: 10.1002/elps.202000034] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 05/31/2020] [Accepted: 07/14/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Erin A. Henslee
- Department of Engineering Wake Forest University 455 Vine St. Winston‐Salem USA
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22
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Matsuo K, Fujishima I. Textural Changes by Mastication and Proper Food Texture for Patients with Oropharyngeal Dysphagia. Nutrients 2020; 12:nu12061613. [PMID: 32486264 PMCID: PMC7352363 DOI: 10.3390/nu12061613] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/18/2020] [Accepted: 05/28/2020] [Indexed: 11/16/2022] Open
Abstract
Bolus texture is a key factor for safe swallowing in patients with dysphagia since an improper texture may result in aspiration and/or pharyngeal residue. This article discusses swallowing bolus texture from two key aspects: the textural change of solid food by mastication and the current standardized definition of food texture in Japan. When swallowing a liquid bolus, the texture is mostly maintained from ingestion to swallow onset. For solid food, however, the food is crushed by chewing and mixed with saliva before swallowing; the texture of the ingested food is modified to an easily swallowable form at swallow onset by mastication. Understanding the mechanism of mastication and its assessment are therefore important in deciding the proper diet for dysphagic patients. As standardized criteria for classifying the texture of food and liquid are essential as well, this report also describes the Japanese Dysphagia Diet 2013 that is commonly used as the standardized index for dysphagic diets in Japan.
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Affiliation(s)
- Koichiro Matsuo
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University, Aichi 470-1192, Japan
- Correspondence: ; Tel.: +81-562-93-9098
| | - Ichiro Fujishima
- Department of Rehabilitation Medicine, Hamamatsu City Rehabilitation Hospital, Hamamatsu 433-8511, Japan;
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23
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Ozawa N, Onda T, Hayashi K, Honda H, Shibahara T. Effects of Topical Hangeshashinto (TJ-14) on Chemotherapy-Induced Oral Mucositis. Cancer Manag Res 2020; 12:1069-1078. [PMID: 32104087 PMCID: PMC7024791 DOI: 10.2147/cmar.s238306] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/31/2020] [Indexed: 01/11/2023] Open
Abstract
Purpose Hangeshashinto (TJ-14), a Kampo medicine comprising seven types of herbs, has been used in Japan to alleviate the side effects associated with anticancer drug treatments. However, the pharmacological effects of this medicine currently remain unclear. The present study aimed to demonstrate the efficacy of TJ-14 against anticancer drug-induced stomatitis, the pain associated with which may have a negative impact on mastication and swallowing. Methods Mucositis was induced in Sprague-Dawley rats by cancer chemotherapy. Changes in body weight, stomatitis grades, histopathological scores, and oral bacterial counts were examined among TJ-14-treated, saline-treated, and Control (no treatment) rats. In vitro studies, including cell proliferation and wound healing assays, using epidermal keratinocyte and fibroblast cell lines were conducted. Results The local application of TJ-14 exerted strong antibacterial effects and attenuated oral chemotherapy-induced stomatitis in rats. TJ-14 also increased the viability and invasion of epidermal keratinocytes and fibroblasts. Conclusion The present results demonstrated the potential of TJ-14 to attenuate chemotherapy-induced stomatitis.
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Affiliation(s)
- Natsuo Ozawa
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Chiba 261-8502, Japan
| | - Takeshi Onda
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Chiba 261-8502, Japan
| | - Kamichika Hayashi
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Chiba 261-8502, Japan
| | - Hirona Honda
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Chiba 261-8502, Japan
| | - Takahiko Shibahara
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Chiba 261-8502, Japan.,Oral Cancer Center, Tokyo Dental College, Chiba 272-8513, Japan
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24
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Matsuo K, Kito N, Ogawa K, Izumi A, Masuda Y. Effects of textured foods on masticatory muscle activity in older adults with oral hypofunction. J Oral Rehabil 2019; 47:180-186. [DOI: 10.1111/joor.12901] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/15/2019] [Accepted: 10/29/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Koichiro Matsuo
- Department of Dentistry and Oral‐Maxillofacial Surgery School of Medicine Fujita Health University Aichi Japan
| | - Norie Kito
- Department of Dentistry and Oral‐Maxillofacial Surgery School of Medicine Fujita Health University Aichi Japan
| | | | | | - Yuji Masuda
- Division of Oral and Maxillofacial Biology Institute for Oral Science Matsumoto Dental University Shiojiri Japan
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25
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Iwao Y, Shigeishi H, Takahashi S, Uchida S, Kawano S, Sugiyama M. Improvement of physical and oral function in community-dwelling older people after a 3-month long-term care prevention program including physical exercise, oral health instruction, and nutritional guidance. Clin Exp Dent Res 2019; 5:611-619. [PMID: 31890297 PMCID: PMC6934341 DOI: 10.1002/cre2.226] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/14/2019] [Accepted: 07/07/2019] [Indexed: 11/11/2022] Open
Abstract
Objective There is limited evidence about the most appropriate way to improve physical and oral function in older people. The aim of this study was to clarify the effectiveness of a long-term care prevention program combining physical exercise, oral health instruction, and nutritional guidance among community-dwelling older people. Materials and methods We included 43 older people aged at least 65 years (seven men and 23 women; mean age 75.3 years) in Bungotakada City, Japan. The 3-month program involved a weekly intervention. Physical and oral function was investigated on the first day of the program (i.e., baseline) and at the end of the program (i.e., after 3 months). Physical function was examined using measures such as handgrip strength, timed up-and-go test, and one-leg standing time with eyes open. An oral diadochokinesis test was used to assess oral function. Results Mean maximum handgrip strength increased significantly in older people aged ≤74 years (younger participants) and those aged ≥75 years (older participants) after 3 months compared with the baseline. The timed up-and-go test duration was significantly lower in older participants after the program. Repetition of the monosyllables pa and ka and the repetitive saliva swallowing test was significantly improved in both groups. The dysphagia risk assessment for the community-dwelling elderly score was significantly lower in younger participants after 3 months. Conclusion Participation in a 3-month program combining physical exercise, oral health instruction, and nutritional guidance may contribute to improvement or maintenance of oral and physical function in older people.
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Affiliation(s)
- Yoshimi Iwao
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
- Bungotakada City Council of Social WelfareBungotakadaJapan
| | - Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | | | - Shino Uchida
- Bungotakada City Council of Social WelfareBungotakadaJapan
| | - Shirou Kawano
- Bungotakada City Council of Social WelfareBungotakadaJapan
| | - Masaru Sugiyama
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
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Hayashi K, Onda T, Honda H, Ozawa N, Ohata H, Takano N, Shibahara T. Effects of ozone nano-bubble water on mucositis induced by cancer chemotherapy. Biochem Biophys Rep 2019; 20:100697. [PMID: 31692631 PMCID: PMC6806368 DOI: 10.1016/j.bbrep.2019.100697] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 08/17/2019] [Accepted: 10/11/2019] [Indexed: 01/18/2023] Open
Abstract
No effective, reliable treatment for stomatitis associated with cancer therapy has been established. This study focused on the its effectiveness of ozone nano-bubble water (ONBW) for the treatment of chemotherapy-induced stomatitis. Oral mucositis was induced in 14-week-old male Sprague-Dawley rats (N = 21). The animals were randomly divided into 3 groups: 7 without treatment (control); 7 treated with physiological salt solution (saline); and 7 treated with ONBW. Animals were weighed on Days 7, 9, 11, and 16. Stomatitis grade evaluation and bacterial count measurements were performed before rinsing in all animals 3, 5, and 10 days after acetic acid irritation (Days 9, 11, and 17 respectively). Weight loss after stomatitis creation was observed in all groups, with significant differences between the control and ONBW groups and between the saline and ONBW groups on Day 16. The stomatitis grade did not worsen during the experimental period in any group, with the lowest grades in the ONBW group on Days 11 and 16. Significant differences were identified between the control and ONBW groups and between the saline and ONBW groups on Days 11 and 16. Oral bacterial counts tended to decrease over time in all three groups, with the greatest decrease in the ONBW group, followed by the saline group. The decrease in the bacterial count was steepest in the ONBW group. Rinsing out the oral cavity with ONBW decreased bacterial counts and encouraged the healing of oral chemotherapy-induced stomatitis. ONBW may be an effective treatment for chemotherapy-induced stomatitis.
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Affiliation(s)
- Kamichika Hayashi
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Japan
| | - Takeshi Onda
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Japan
| | - Hirona Honda
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Japan
| | - Natsuo Ozawa
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Japan
| | - Hitoshi Ohata
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Japan
| | - Nobuo Takano
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Japan
- Oral Cancer Center, Tokyo Dental College, Japan
| | - Takahiko Shibahara
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Japan
- Oral Cancer Center, Tokyo Dental College, Japan
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27
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Kyaw Myint ZC, Zaitsu T, Oshiro A, Ueno M, Soe KK, Kawaguchi Y. Risk indicators of dental caries and gingivitis among 10-11-year-old students in Yangon, Myanmar. Int Dent J 2019; 70:167-175. [PMID: 31777070 DOI: 10.1111/idj.12537] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 08/07/2019] [Accepted: 10/04/2019] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES To obtain basic data on dental caries and gingival status of students in Myanmar, and to identify related risk indicators, including socioeconomic conditions and oral health behaviours and habits. STUDY DESIGN This cross-sectional study enrolled 537 fifth-grade students in Myanmar. Oral health behaviours and dietary patterns of students were assessed using questionnaires. Oral examinations were conducted to identify dental caries and gingivitis, and the oral samples were obtained to determine the bacteria levels in dental plaque. RESULTS The dental caries prevalence was 68.5%, with a mean number of decayed teeth of 2.07 ± 2.15. The prevalence of gingivitis was 98.9%, and the mean number of inflamed gingival areas in the anterior region was 16.2 ± 5.4. No significant differences were found between the sexes in terms of dental caries and gingivitis. Oral hygiene was significantly poorer, and levels of bacteria in dental plaque were significantly higher in boys than in girls. Multiple linear regression tests were used to analyse the association between risk indicators and dental caries and gingivitis. Tooth brushing frequency, a daily habit of mouth rinsing, dental visit experience, consumption of sugary snacks and oral hygiene status were significantly associated with dental caries. Mother's occupation, tooth brushing frequency, consumption of sweet drinks, oral hygiene status and bacterial levels in dental plaque were significant predictors of gingivitis. CONCLUSIONS Myanmar students had a high prevalence of dental caries and gingivitis. Socioeconomic condition, oral hygiene status and oral health behaviours were all determined to be significant risk indicators.
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Affiliation(s)
- Zar Chi Kyaw Myint
- Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Preventive and Community Dentistry, University of Dental Medicine, Yangon, Myanmar
| | - Takashi Zaitsu
- Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akiko Oshiro
- Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Masayuki Ueno
- Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ko Ko Soe
- Department of Preventive and Community Dentistry, University of Dental Medicine, Yangon, Myanmar
| | - Yoko Kawaguchi
- Department of Oral Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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28
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Lo YJ, Lei U. Measurement of the real part of the Clausius-Mossotti factor of dielectrophoresis for Brownian particles. Electrophoresis 2019; 41:137-147. [PMID: 31661554 DOI: 10.1002/elps.201900345] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 10/20/2019] [Accepted: 10/24/2019] [Indexed: 11/09/2022]
Abstract
A method is proposed for measuring the real part of the Clausius-Mossotti factor ( K r ) of dielectrophoresis for Brownian particles based on a solution of the Smoluchowski equation using a designed polydimethysilloxane microchannel with planar hyperbolic electrodes on its glass substrate. An approximate two-dimensional spring-like dielectrophoretic force is generated in the device, and the data necessarily measured is the time evolution of the in-plane particle displacement undergoing confined Brownian motion. Validity of the measurement was checked against the zeta potentials in the literature based on the classical theory of surface conductance using polystyrene particles of size of one micron. As the dielectrophoretic force depends on K r , which is usually unknown for bio-particles and some engineered particles, and is seldom measured; this study is important from the academic point of view and could be helpful for the manipulation and characterization of sub-micron particles using dielectrophoresis. Extension of the method to the measurement of permanent dipole moment and total polarizability of particle was developed theoretically and discussed by incorporating an optical tweezer into the present device.
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Affiliation(s)
- Ying-Jie Lo
- Institute of Applied Mechanics, National Taiwan University, Taipei, 10617, Taiwan, Republic of China
| | - U Lei
- Institute of Applied Mechanics, National Taiwan University, Taipei, 10617, Taiwan, Republic of China
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29
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Nishizawa T, Niikura Y, Akasaka K, Watanabe M, Kurai D, Amano M, Ishii H, Matsushima H, Yamashita N, Takizawa H. Pilot study for risk assessment of aspiration pneumonia based on oral bacteria levels and serum biomarkers. BMC Infect Dis 2019; 19:761. [PMID: 31477059 PMCID: PMC6720072 DOI: 10.1186/s12879-019-4327-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 07/29/2019] [Indexed: 02/07/2023] Open
Abstract
Background Aspiration pneumonia is a serious problem among elderly patients; it is caused by many risk factors including dysphagia, poor oral hygiene, malnutrition, and sedative medications. The aim of this study was to define a convenient procedure to objectively evaluate the risk of aspiration pneumonia in the clinical setting. Methods This prospective study included an aspiration pneumonia (AP) group, a community-acquired pneumonia (CAP) group, and a control (Con) group (patients hospitalized for lung cancer chemotherapy). We used the Oral Health Assessment Tool (OHAT), which assesses oral hygiene, and evaluated performance status, body mass index, serum albumin levels, substance P values in plasma, and oral bacterial counts. Results The oral health as assessed by the OHAT of the aspiration pneumonia group was significantly impaired compared with that of the CAP group and the control (5.13 ± 0.18, 4.40 ± 0.26, 3.90 ± 0.22, respectively; p < 0.05). The oral bacterial count in the aspiration pneumonia group (7.20 ± 0.11) was significantly higher than that in the CAP group (6.89 ± 0.12), consistent with the OHAT scores. Oral bacterial count was significantly reduced by oral care. Conclusions OHAT and oral bacterial counts can be a tool to assess the requirement of taking oral care and other preventive procedures in patients at high risk of aspiration pneumonia.
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Affiliation(s)
- Tomotaka Nishizawa
- Department of Respiratory Medicine, Japanese Red Cross Society Saitama Hospital, 1-5 Shintoshin Chuo-ku Saitama-shi, Saitama, 330-8553, Japan. .,Department of Pharmacotherapy, Research Institute of Pharmaceutical Sciences Musashino University, Tokyo, Japan. .,Department of Respiratory Medicine, Graduate School of Medicine, Kyorin University, Tokyo, Japan.
| | - Yuichi Niikura
- Department of Pharmacotherapy, Research Institute of Pharmaceutical Sciences Musashino University, Tokyo, Japan
| | - Keiichi Akasaka
- Department of Respiratory Medicine, Japanese Red Cross Society Saitama Hospital, 1-5 Shintoshin Chuo-ku Saitama-shi, Saitama, 330-8553, Japan
| | - Masato Watanabe
- Department of Respiratory Medicine, Graduate School of Medicine, Kyorin University, Tokyo, Japan
| | - Daisuke Kurai
- Department of General Medicine, Kyorin University, Tokyo, Japan
| | - Masako Amano
- Department of Respiratory Medicine, Japanese Red Cross Society Saitama Hospital, 1-5 Shintoshin Chuo-ku Saitama-shi, Saitama, 330-8553, Japan
| | - Haruyuki Ishii
- Department of Respiratory Medicine, Graduate School of Medicine, Kyorin University, Tokyo, Japan
| | - Hidekazu Matsushima
- Department of Respiratory Medicine, Japanese Red Cross Society Saitama Hospital, 1-5 Shintoshin Chuo-ku Saitama-shi, Saitama, 330-8553, Japan
| | - Naomi Yamashita
- Department of Pharmacotherapy, Research Institute of Pharmaceutical Sciences Musashino University, Tokyo, Japan
| | - Hajime Takizawa
- Department of Respiratory Medicine, Graduate School of Medicine, Kyorin University, Tokyo, Japan
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30
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Iwawaki Y, Muraoka Y, Higashiyama H, Kishimoto T, Liu L, Goto T, Ichikawa T. Comparison between Two Assessment Tests for Oral Hygiene: Adenosine Triphosphate + Adenosine Monophosphate Swab Test and Bacteria Number Counting by Dielectrophoretic Impedance Measurement. Dent J (Basel) 2019; 7:dj7010010. [PMID: 30717111 PMCID: PMC6473332 DOI: 10.3390/dj7010010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 01/12/2019] [Accepted: 01/16/2019] [Indexed: 11/16/2022] Open
Abstract
Objective assessments of oral hygiene are important to prevent oral and systemic diseases. Two objective assessment tests are available to assess oral hygiene; (1) the adenosine triphosphate (ATP) + adenosine monophosphate (AMP) swab test, which incorporates a luciferase assay and (2) a bacteria count using the dielectrophoretic impedance measurement (DEPIM) method. In this study, we compared the two tests using a subjective visual assessment by professional clinicians and investigated the clinical significance of these tests. Twenty-seven young participants (mean age 26.3 ± 3.2 years) and twenty-seven older participants (mean age 75.1 ± 5.9 years) were recruited. Oral bacteria were sampled from three areas, including the tongue dorsum, the buccal mucosa, and the faucal mucosa, and saliva was obtained using a cotton swab. The amount of ATP + AMP and the number of bacteria were measured by each specific apparatus. Additionally, one examiner assessed the overall condition of oral hygiene using the visual analog scale (VAS). In the ATP + AMP swab test, the means were highest in saliva. For the bacteria count, the means were higher in the tongue dorsum and saliva and lower in the faucal and buccal mucosa. The results of the subjective assessment of oral hygiene indicated that the VAS-value was 3.78 ± 0.97 for the young group and 3.35 ± 0.81 for the older group. No significant difference was observed between the two groups. Additionally, no significant relationship between the values of the ATP + AMP swab test and the bacteria count was found for any of the four sample sites. In the older group, the subjective assessment of oral hygiene was significantly correlated with the values of the ATP + AMP swab test (multiple correlation coefficient = 0.723, p = 0.002). In conclusion, the values provided by the ATP + AMP swab test were not always correlated to the bacteria count. The results of this study suggest that the subjective assessment of oral hygiene was more highly correlated with the results of the ATP + AMP swab test, as compared to the bacterial count assay.
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Affiliation(s)
- Yuki Iwawaki
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Yuki Muraoka
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Hiroaki Higashiyama
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Takahiro Kishimoto
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Lipei Liu
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Takaharu Goto
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
| | - Tetsuo Ichikawa
- Department of Prosthodontics and Oral Rehabilitation, Tokushima University, Graduate School of Biomedical Sciences, 3-18-15, Kuramoto, Tokushima 770-8504, Japan.
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Hasegawa Y, Sakuramoto A, Sugita H, Hasegawa K, Horii N, Sawada T, Shinmura K, Kishimoto H. Relationship between oral environment and frailty among older adults dwelling in a rural Japanese community: a cross-sectional observational study. BMC Oral Health 2019; 19:23. [PMID: 30669995 PMCID: PMC6343281 DOI: 10.1186/s12903-019-0714-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 01/11/2019] [Indexed: 12/22/2022] Open
Abstract
Background Oral functions are known to decline with aging. However, there is limited evidence that supports the relationship between oral health and frailty. This study aimed to clarify the relationship between oral hygiene conditions, measured by remaining teeth and mucosa, and frailty among elderly people dwelling in a Japanese rural community. Methods We surveyed self-reliant elderly individuals aged ≥65 years who were dwelling in the Sasayama-Tamba area of Hyogo, Japan. Frailty was evaluated according to the total score of the Kihon Checklist (KCL). Based on the KCL score, elderly participants were divided into three groups: robust, pre-frail, and frail. The items measured to evaluate oral environment included the number of remaining teeth, denture usage condition, oral hygiene status, dry mouth condition, and salivary bacterial count. For statistical analysis, Fisher’s exact test, one-way analysis of variance, and multiple comparison technique were used. Results Of 308 elderly participants, 203 (65.9%), 85 (27.6%), and 20 (6.5%) belonged to the robust, pre-frail, and frail groups, respectively. The proportion of participants who were judged to have poor hygiene was significantly higher in the frail group than in the other two groups. The bacterial count was significantly smaller in the frail group than in the robust group, and the frail group had fewer number of remaining teeth than the other two groups, suggesting that the number of remaining teeth may be associated with bacterial count. Conclusion In elderly adults, physical frailty may affect the oral hygiene status and condition of the remaining teeth.
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Affiliation(s)
- Yoko Hasegawa
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan. .,Division of Comprehensive Prosthodontics, Graduate School of Medical and Dental Sciences, Niigata University, 5274, Gakkocho-dori 2-bancho, Chuo-ku, Niigata, 951-8514, Japan.
| | - Ayumi Sakuramoto
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Hideyuki Sugita
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Kana Hasegawa
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Nobuhide Horii
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Takashi Sawada
- Hyogo Dental Association, 5-7-18 Yamamoto-dori, Chuo-ku, Kobe, Hyogo, 650-0003, Japan
| | - Ken Shinmura
- Division of General Medicine, Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Hiromitsu Kishimoto
- Department of Dentistry and Oral Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan.
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Suzuki H, Matsuo K, Okamoto M, Nakata H, Sakamoto H, Fujita M. Perioperative changes in oral bacteria number in patients undergoing cardiac valve surgery. J Oral Sci 2019; 61:526-528. [DOI: 10.2334/josnusd.18-0380] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Hitomi Suzuki
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University
- Division of Oral Health and Welfare, Niigata University Graduate School of Medical and Dental Sciences
- Department of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University Hospital
| | - Koichiro Matsuo
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University
| | - Mieko Okamoto
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University
| | - Haruka Nakata
- Department of Dentistry and Oral-Maxillofacial Surgery, School of Medicine, Fujita Health University
- Division of Oral Health and Welfare, Niigata University Graduate School of Medical and Dental Sciences
- Department of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University Hospital
| | - Hitomi Sakamoto
- Department of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University Hospital
| | - Mirai Fujita
- Department of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University Hospital
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Su CY, Shigeishi H, Nishimura R, Ohta K, Sugiyama M. Detection of oral bacteria on the tongue dorsum using PCR amplification of 16S ribosomal RNA and its association with systemic disease in middle-aged and elderly patients. Biomed Rep 2018; 10:70-76. [PMID: 30588306 DOI: 10.3892/br.2018.1175] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/06/2018] [Indexed: 01/14/2023] Open
Abstract
The association between oral health and systemic disease is recognized in the literature. The present study aimed to clarify the association between oral bacteria on the tongue dorsum and factors associated with oral health and systemic disease in middle-aged and elderly patients. The association between bacterial numbers, oral health status and systemic disease was preliminarily investigated in 70 patients (mean age, 69.5 years; range, 45-92 years) who visited the Department of Oral Health, Hiroshima University Hospital (Hiroshima, Japan). The bacterial 16S ribosomal RNA gene was employed to quantitate bacterial numbers using real-time polymerase chain reaction (PCR). PCR was also performed to detect the DNA of periodontal disease-related bacteria. Oral bacterial numbers were marginally negatively correlated with moisture levels on the tongue surface [Spearman's rank correlation coefficient (R)=-0.131, P=0.28). Subjects with bleeding on probing (BOP) or a ≥4 mm probing depth (PD) exhibited higher Porphyromonas gingivalis (P. gingivalis)-positive rates (50.0 and 51.1%, respectively) than those without BOP or a <4 mm PD (39.5 and 30.4%, respectively). Subjects with medical histories of hypertension, diabetes, stroke and heart disease exhibited a trend toward higher P. gingivalis-positive rates than those without such disorders. These findings indicated that the tongue moisture level may be associated with bacterial numbers on the tongue surface, while P. gingivalis on the tongue surface may be associated with systemic and periodontal diseases. Further investigation in a larger number of participants is necessary to clarify the correlation between bacterial numbers and systemic disease.
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Affiliation(s)
- Cheng-Yih Su
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Rumi Nishimura
- Department of Oral Epidemiology, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Kouji Ohta
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Masaru Sugiyama
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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Funahara M, Soutome S, Hayashida S, Umeda M. An analysis of the factors affecting the number of bacteria in the saliva of elderly adults in need of care. INT J GERONTOL 2018. [DOI: 10.1016/j.ijge.2018.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Muramatsu K, Matsuo K, Kawai Y, Yamamoto T, Hara Y, Shimomura Y, Yamashita C, Nishida O. Comparison of wiping and rinsing techniques after oral care procedures in critically ill patients during endotracheal intubation and after extubation: A prospective cross-over trial. Jpn J Nurs Sci 2018; 16:80-87. [PMID: 29947119 DOI: 10.1111/jjns.12217] [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: 09/05/2017] [Revised: 03/07/2018] [Accepted: 04/03/2018] [Indexed: 11/28/2022]
Abstract
AIM Endotracheal intubation of critically ill patients increases the risk of aspiration pneumonia, which can be reduced by regular oral care. However, the rinsing of the residual oral contaminants after mechanical cleaning carries the risk of aspirating the residue during the intubation period. Removing the contaminants by wiping with mouth wipes could be an alternative to rinsing with water because of no additional fluid. This study tested: (i) the amount of oral bacteria during endotracheal intubation and after extubation; and (ii) the changes in the bacterial count during oral care procedures. METHODS Thirty-five mechanically ventilated patients in the intensive care unit were enrolled. The amount of bacteria on the dorsal tongue surface was counted before and following oral care and then after the elimination of contaminants either by rinsing with water and suctioning or by wiping with mouth wipes. The oral bacterial amount was compared statistically between the intubation and extubation status and among set time points during the oral care procedure. RESULTS The oral bacterial count was significantly decreased after extubation. During the oral care procedure, the oral bacterial amount was significantly lower after eliminating the contaminants either by rinsing or wiping, with no remarkable difference between the elimination techniques. CONCLUSIONS The findings suggest that the oral bacterial amount is elevated during endotracheal intubation, which could increase the risk of aspiration pneumonia. The significant reduction in the bacterial count by wiping indicates that it might be a suitable alternative to rinsing for mechanically ventilated patients.
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Affiliation(s)
- Keita Muramatsu
- Department of Intensive Care Unit Nursing, Fujita Health University Hospital, Toyoake, Japan
| | - Koichiro Matsuo
- Department of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University, Toyoake, Japan
| | - Yusuke Kawai
- Department of Intensive Care Unit Nursing, Fujita Health University Hospital, Toyoake, Japan
| | - Tsukasa Yamamoto
- Department of Intensive Care Unit Nursing, Fujita Health University Hospital, Toyoake, Japan
| | - Yoshitaka Hara
- Department of Anesthesiology and Critical Care Medicine, Fujita Health University, Toyoake, Japan
| | - Yasuyo Shimomura
- Department of Anesthesiology and Critical Care Medicine, Fujita Health University, Toyoake, Japan
| | - Chizuru Yamashita
- Department of Anesthesiology and Critical Care Medicine, Fujita Health University, Toyoake, Japan
| | - Osamu Nishida
- Department of Anesthesiology and Critical Care Medicine, Fujita Health University, Toyoake, Japan
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Niu H, Wang N, Liu B, Xiao L, Wang L, Guo H. Synergistic and additive interactions of Serratia marcescens S-JS1 to the chemical insecticides for controlling Nilaparvata lugens (Hemiptera: Delphacidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2018; 111:823-828. [PMID: 29385504 DOI: 10.1093/jee/tox348] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Indexed: 06/07/2023]
Abstract
The combined use of entomopathogens and chemical agents has been suggested as an alternative strategy to control pest insects. However, the effectiveness of combinations of entomopathogenic bacteria and insecticides against rice planthoppers is largely unknown. Here, we evaluated the separate and combined effects of an entomopathogenic bacterium, Serratia marcescens S-JS1, and spirotetramat or thiamethoxam insecticides against third-instar nymphs of Nilaparvata lugens Stål (Hemiptera: Delphacidae) under laboratory and greenhouse conditions. Under laboratory conditions, the combinations caused higher mortality in the third-instar nymphs of N. lugens and produced a synergistic or additive effect compared with the treatments with either bacterial suspension or insecticide alone. Application of S-JS1 (1 × 109 cfu/ml) in combination with 20 mg/liter spirotetramat resulted in 80.5% of N. lugens nymphal mortality, compared with 52.7% in spirotetramat alone treatments, and interactions resulted in a synergistic responses. Other combination treatments of S-JS1 with either insecticide concentration all exhibited additive interactions. In further greenhouse tests, S-JS1 (1 × 109 cfu/ml) + spirotetramat (20 mg/liter) and S-JS1 (1 × 109 cfu/ml) + thiamethoxam (5 mg/liter) showed additive effects against the nymphs, and were found to be most effective relative to their individual treatments on days 5 and 9. Our results indicate that S. marcescens S-JS1 combined with insecticide may provide a promising new strategy for controlling N. lugens.
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Affiliation(s)
- Hongtao Niu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Na Wang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Baosheng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Lijunjie Xiao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Lihua Wang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Huifang Guo
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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Shigeishi H, Sugiyama M, Ohta K, Yokoyama S, Sakuma M, Murozumi H, Kato H, Takechi M. High HPV16 E6 viral load in the oral cavity is associated with an increased number of bacteria: A preliminary study. Biomed Rep 2017; 8:59-64. [PMID: 29399339 DOI: 10.3892/br.2017.1025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 11/13/2017] [Indexed: 02/07/2023] Open
Abstract
In a previous study, the present research group reported that males had a significantly higher prevalence of human papillomavirus (HPV)16 than females in oral rinse samples. The objective of the present study was to examine the relationship between HPV16 viral load and clinical factors, including remaining teeth, denture use and numbers of oral bacteria. A total of 124 patients (48 males and 76 females; mean age, 61.6 years; age range, 20-97 years) who visited the Department of Oral and Maxillofacial Reconstructive Surgery of Hiroshima University Hospital (Hiroshima, Japan) between November 2016 and August 2017 were analyzed. None of the patients had evidence of oral cancer or pre-malignant lesions, including epithelial dysplasia and leukoplakia. Quantitative polymerase chain reaction (qPCR) analysis was employed to examine the number of HPV16 viral copies. Furthermore, the number of oral bacteria was determined using the dielectrophoretic impedance measurement method. HPV16 was below the limit of detection in qPCR findings for samples obtained from 30 of the 124 subjects, thus the association of HPV16 viral copy number with clinical parameters was examined in the remaining 94 patients. The average number of HPV16 E6 DNA copies was 1.65±3.47 copies/cell (range, 0.07-25.3 copies/cell) and was significantly higher in subjects with a high oral bacteria count [≥106.5 colony forming unit (CFU)/ml] than in those with a low count (<106.5 CFU/ml) (0.79±0.98 vs. 2.06±4.11 copies/cell; P=0.030). The present results indicated that HPV16 viral load may be related to an increased bacterial number in the oral cavity. Further investigations are required to clarify the correlation between oral HPV load and oral hygiene status.
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Affiliation(s)
- Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Masaru Sugiyama
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Kouji Ohta
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Sho Yokoyama
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Miyuki Sakuma
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Hiroshi Murozumi
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Hiroki Kato
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Masaaki Takechi
- Department of Oral and Maxillofacial Surgery, Program of Dentistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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Kameda T, Oka SY, Morozumi Y, Terada K, Toyama A, Ohkuma K, Kudo M, Ikeda F. Intraoral electric potential via oral bacterial power generation -A novel mechanism of biofilm formation. Dent Mater J 2017; 36:822-833. [PMID: 28747596 DOI: 10.4012/dmj.2016-318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In the early stages of biofilm accumulation, the electric charge of the dental enamel and pellicle surfaces is known to be involved. We therefore investigated the relationship between oral hygiene and intraoral electric potential (IoP) in 45 male participants using a double-blind study. IoP, but not body surface electric potential, was loosely correlated with oral hygiene condition (Oral Hygiene Index; OHI). IoP was also loosely correlated with smartphone use; however, there was no significant correlation between smartphone use and OHI. IoP elevation might be caused by OHI elevation resulting from biofilm formation as an internal factor, with smartphone use as an external factor. This in vitro study revealed the generating capacity of Streptococcus mutans accompanied by biofilm accumulation using a microbial fuel cell. These results suggest that IoP elevation is caused by biofilm accumulation induced by power generation of oral bacteria, resulting in elevation of OHI.
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Affiliation(s)
- Takashi Kameda
- Department of Orthodontics, Nippon Dental University School of Life Dentistry at Niigata
| | - Shun-Ya Oka
- Department of Biology, Nippon Dental University School of Life Dentistry at Niigata
| | - Yuko Morozumi
- Department of Periodontology, Nippon Dental University School of Life Dentistry at Niigata
| | - Kazuto Terada
- Orthodontic Dentistry, Nippon Dental University Niigata Hospital
| | - Atsushi Toyama
- Department of Periodontology, Nippon Dental University School of Life Dentistry at Niigata
| | - Kazuo Ohkuma
- Department of Dental Materials Science, Nippon Dental University School of Life Dentistry at Niigata
| | - Mitsuru Kudo
- Department of Mechanical Engineering, National Institute of Technology, Nagaoka College
| | - Fujio Ikeda
- Department of Mechanical Engineering, National Institute of Technology, Nagaoka College
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Comparison of Sensitivity and Quantitation between Microbead Dielectrophoresis-Based DNA Detection and Real-Time PCR. BIOSENSORS-BASEL 2017; 7:bios7040044. [PMID: 28974001 PMCID: PMC5746767 DOI: 10.3390/bios7040044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/21/2017] [Accepted: 09/26/2017] [Indexed: 12/05/2022]
Abstract
In this study, we describe a microbead-based method using dielectrophoresis (DEP) for the fast detection of DNA amplified by polymerase chain reaction (PCR). This electrical method measures the change in impedance caused by DEP-trapped microbeads to which biotinylated target DNA molecules are chemically attached. Using this method, measurements can be obtained within 20 min. Currently, real-time PCR is among the most sensitive methods available for the detection of target DNA, and is often used in the diagnosis of infectious diseases. We therefore compared the quantitation and sensitivity achieved by our method to those achieved with real-time PCR. We found that the microbead DEP-based method exhibited the same detection limit as real-time PCR, although its quantitative detection range was slightly narrower at 10–105 copies/reaction compared with 10–107 copies/reaction for real-time PCR. Whereas real-time PCR requires expensive and complex instruments, as well as expertise in primer design and experimental principles, our novel method is simple to use, inexpensive, and rapid. This method could potentially detect viral and other DNAs efficiently in combination with conventional PCR.
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Nakagami G, Mori M, Yoshida M, Kitamura A, Hayashi A, Miyagaki T, Sasaki S, Sugama J, Sanada H. Inter-rater and intra-rater reliability outcomes of a rapid bacteria counting system with pressure ulcer samples. J Wound Care 2017; 26:S27-S31. [DOI: 10.12968/jowc.2017.26.sup2.s27] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- G. Nakagami
- Lecturer, Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - M. Mori
- Head Nurse, Department of Nursing, The University of Tokyo Hospital, Tokyo, Japan
| | - M. Yoshida
- Assistant Professor, Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - A. Kitamura
- Graduate Student, Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - A. Hayashi
- Clinical Fellow, Department of Plastic Surgery, The University of Tokyo Hospital, Tokyo, Japan
| | - T. Miyagaki
- Lecturer, Department of Dermatology, The University of Tokyo Hospital, Tokyo, Japan
| | - S. Sasaki
- WOC Nurse, Department of Nursing, The University of Tokyo Hospital, Tokyo, Japan
| | - J. Sugama
- Professor, Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, Kanazawa University, Ishikawa, Japan
| | - H. Sanada
- Professor, Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Watanabe K, Kijima S, Nonaka C, Matsukawa Y, Yamazoe K. Inhibitory effect for proliferation of oral bacteria in dogs by tooth brushing and application of toothpaste. J Vet Med Sci 2016; 78:1205-8. [PMID: 27062999 PMCID: PMC4976280 DOI: 10.1292/jvms.15-0277] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
To investigate inhibitory effect for oral bacterial proliferation, we divided 12 dogs into 3 groups; scaling alone (C; control group), brushing (B) and application of toothpaste (P). Before scaling (Pre) and at 0 to 8 weeks after scaling (0-8 w), we collected oral bacteria from the dental surface every week and counted them using a bacterial counter. The results demonstrated a significant reduction in the number of oral bacteria for group B relative to Pre and group C, as well as for group P relative to group C at 5-7 w. Consequently, brushing may inhibit an increase in the number of oral bacteria, and toothpaste may be effective at a certain level, although not more than that of brushing.
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Affiliation(s)
- Kazuhiro Watanabe
- Laboratory of Veterinary Surgery, Clinical Veterinary Medicine, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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Tohara T, Kikutani T, Tamura F, Yoshida M, Kuboki T. Multicentered epidemiological study of factors associated with total bacterial count in the saliva of older people requiring nursing care. Geriatr Gerontol Int 2016; 17:219-225. [PMID: 26800022 DOI: 10.1111/ggi.12695] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2015] [Indexed: 10/22/2022]
Abstract
AIM To clarify whether the number of present teeth, independent of other well-known factors, was associated with the total bacterial count in the saliva of older people requiring care at nursing homes in a multicentered epidemiological survey. METHOD The participants were 618 older people (mean age 86.8 ± 6.9 years; 122 men, 496 women) residing in 14 nursing homes across Japan. The dependent variable was the participant's salivary bacterial count, and the independent variables were basic demographic data, oral conditions and activity of daily living (measured by Barthel Index). Statistical analysis was first carried out by Student's t-test, Pearson's correlation coefficient analysis and Spearman's rank correlation coefficient analysis. Independent variables found to have a significant relationship to their salivary bacterial count by the univariate analyses were further examined by stepwise multivariate analysis. RESULTS The independent variables shown by univariate analysis to have a significant positive relationship with higher salivary bacterial count were presence of food residue (P = 0.001), absence of mouth dryness (P = 0.001), need of oral care assistance (P = 0.001), inability to keep the mouth opened (P = 0.009), inability to gargle (P = 0.002), denture use (P = 0.004), higher number of present teeth (P = 0.006) and lower Barthel Index (P = 0.001). Subsequent multivariate analysis identified presence of food residue (P = 0.031), higher number of present teeth (P = 0.043) and lower Barthel Index (P = 0.001) as independent associated factors for higher salivary bacterial count. CONCLUSIONS The present study found that presence of food residue, higher number of present teeth and decreased activity of daily living were significantly related to higher bacterial count in the saliva of older people requiring care. Geriatr Gerontol Int 2017; 17: 219-225.
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Affiliation(s)
- Takashi Tohara
- Division of Rehabilitation for Speech and Swallowing Disorders, Nippon Dental University Tama Oral Rehabilitation Clinic, Hiroshima, Japan
| | - Takeshi Kikutani
- Division of Rehabilitation for Speech and Swallowing Disorders, Nippon Dental University Tama Oral Rehabilitation Clinic, Hiroshima, Japan.,Division of Oral Rehabilitation, Nippon Dental University Graduate School of Life Dentistry, Hiroshima, Japan
| | - Fumiyo Tamura
- Division of Rehabilitation for Speech and Swallowing Disorders, Nippon Dental University Tama Oral Rehabilitation Clinic, Hiroshima, Japan
| | | | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Kobayashi K, Ryu M, Izumi S, Ueda T, Sakurai K. Effect of oral cleaning using mouthwash and a mouth moisturizing gel on bacterial number and moisture level of the tongue surface of older adults requiring nursing care. Geriatr Gerontol Int 2015; 17:116-121. [DOI: 10.1111/ggi.12684] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Kenichiro Kobayashi
- Department of Removable Prosthodontics and Gerodontology; Tokyo Dental College; Tokyo Japan
| | - Masahiro Ryu
- Department of Removable Prosthodontics and Gerodontology; Tokyo Dental College; Tokyo Japan
| | - Sachi Izumi
- Department of Removable Prosthodontics and Gerodontology; Tokyo Dental College; Tokyo Japan
| | - Takayuki Ueda
- Department of Removable Prosthodontics and Gerodontology; Tokyo Dental College; Tokyo Japan
| | - Kaoru Sakurai
- Department of Removable Prosthodontics and Gerodontology; Tokyo Dental College; Tokyo Japan
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Pilot study on novel skin care method by augmentation with Staphylococcus epidermidis, an autologous skin microbe – A blinded randomized clinical trial. J Dermatol Sci 2015; 79:119-26. [DOI: 10.1016/j.jdermsci.2015.05.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/20/2015] [Accepted: 05/01/2015] [Indexed: 02/07/2023]
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Watanabe K, Hayashi K, Kijima S, Nonaka C, Yamazoe K. Tooth brushing inhibits oral bacteria in dogs. J Vet Med Sci 2015; 77:1323-5. [PMID: 25994486 PMCID: PMC4638305 DOI: 10.1292/jvms.14-0193] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
In this study, scaling, polishing and daily tooth brushing were performed in 20 beagle
dogs, and the number of oral bacteria was determined using a bacterial counter. The dogs
were randomized into the scaling (S), scaling + polishing (SP), scaling + tooth daily
brushing (SB) and scaling + polishing + tooth daily brushing (SPB) groups. Samples were
collected from the buccal surface of the maxillary fourth premolars of the dogs
immediately after scaling and every week thereafter from weeks 1 to 8. Throughout the
study, the number of bacteria was significantly lower in the SB and SPB groups compared
with the S group. The findings suggest that daily tooth brushing inhibited oral bacterial
growth in the dogs.
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Affiliation(s)
- Kazuhiro Watanabe
- Laboratory of Veterinary Surgery, Clinical Veterinary Medicine, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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Ishii Y, Imamura K, Kikuchi Y, Miyagawa S, Hamada R, Sekino J, Sugito H, Ishihara K, Saito A. Point-of-care detection of Tannerella forsythia using an antigen-antibody assisted dielectrophoretic impedance measurement method. Microb Pathog 2015; 82:37-42. [PMID: 25812473 DOI: 10.1016/j.micpath.2015.03.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/14/2015] [Accepted: 03/23/2015] [Indexed: 11/28/2022]
Abstract
UNLABELLED The importance of periodontal treatment planning based on diagnosis with clinical detection of periodontal pathogens has been well recognized. However, reliable detection and quantification methods that can be conveniently used at chair-side have yet to be developed. This study aimed to evaluate the clinical use of a novel apparatus which uses an antigen-antibody reaction assisted dielectrophoretic impedance measurement (AA-DEPIM) for the detection of a prominent periodontal pathogen, Tannerella forsythia. A total of 15 patients with a clinical diagnosis of chronic periodontitis, three periodontally healthy volunteers and two with gingivitis were subjected to clinical and microbiological examinations. Saliva samples were analyzed for the presence of T. forsythia using AA-DEPIM, PCR-Invader and real-time PCR methods. The measurement values for total bacteria and T. forsythia using the prototype AA-DEPIM apparatus were significantly greater in periodontitis group than those in healthy/gingivitis group. Using the AA-DEPIM apparatus with tentative cut-off values, T. forsythia was detected for 14 (12 with periodontitis and 2 either healthy or with gingivitis) out of 20 individuals. The measurement for the detection of T. forsythia by the AA-DEPIM method showed a significant positive correlation with the detection by PCR-Invader (r = 0.541, p = 0.01) and the real-time PCR method (r = 0.834, p = 0.01). When the PCR-Invader method was used as a reference, the sensitivity and specificity of the AA-DEPIM method were 76.5% and 100%, respectively. The results suggested that the AA-DEPIM method has potential to be used for clinically evaluating salivary presence of T. forsythia at chair-side. TRIAL REGISTRATION UMIN Clinical Trials Registry (UMIN-CTR) UMIN000012181.
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Affiliation(s)
- Yoshihito Ishii
- Department of Periodontology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Kentaro Imamura
- Department of Periodontology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Yuichiro Kikuchi
- Department of Microbiology, Tokyo Dental College, 2-1-14 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Satoshi Miyagawa
- Panasonic Healthcare, 2-38-5 Nishishinbashi, Minato-ku, Tokyo 105-8433, Japan
| | - Ryo Hamada
- Panasonic Healthcare, 2-38-5 Nishishinbashi, Minato-ku, Tokyo 105-8433, Japan
| | - Jin Sekino
- Department of Periodontology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Hiroki Sugito
- Department of Clinical Oral Health Science, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Kazuyuki Ishihara
- Department of Microbiology, Tokyo Dental College, 2-1-14 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan; Oral Health Science Center, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan
| | - Atsushi Saito
- Department of Periodontology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan; Oral Health Science Center, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo 101-0061, Japan.
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Ichinose-Tsuno A, Aoki A, Takeuchi Y, Kirikae T, Shimbo T, Lee MCI, Yoshino F, Maruoka Y, Itoh T, Ishikawa I, Izumi Y. Antimicrobial photodynamic therapy suppresses dental plaque formation in healthy adults: a randomized controlled clinical trial. BMC Oral Health 2014; 14:152. [PMID: 25511777 PMCID: PMC4289549 DOI: 10.1186/1472-6831-14-152] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 12/11/2014] [Indexed: 11/28/2022] Open
Abstract
Background Oral care is important for oral and systemic health, especially for elderly institutionalized individuals and compromised patients. However, conventional mechanical plaque control is often difficult for these patients because of the pain or the risk of aspiration. Although antimicrobial photodynamic therapy (aPDT), which is considered an alternative or adjunct to mechanical approaches, has potential application as a less stressful method of daily plaque control, no clinical application of this technique has been reported. Methods We investigated the inhibitory effect of a combination of toluidine blue O (TBO), and a red light-emitting diode (LED) on dental plaque formation in healthy volunteers. The optimal concentration of TBO was determined in preliminary in vitro experiments to evaluate the bactericidal effect of aPDT on Streptococcus oralis and to clarify its safety in fibroblast cells. To survey the mechanism of TBO-mediated aPDT, the quality and quantity of reactive oxygen species (ROS) generated during aPDT were also examined using electron spin resonance (ESR) spectroscopy. Subsequently, the inhibitory effect of aPDT on dental plaque formation was investigated in eleven subjects as a clinical pilot study. The right or left mandibular premolars were randomly assigned to the treatment (with aPDT) or control (without aPDT) groups. In total, aPDT was applied six times (twice per day) to the teeth in the test group over a period of four days. On the fourth day, the study concluded and the analyses were performed. Results A combination of 500 or 1000 μg/ml TBO and LED irradiation for 20 s significantly decreased the number of colony forming units of Streptococcus oralis. The cytotoxicity of aPDT was comparable to that of standard antiseptics used in the oral cavity. Hydroxyl radicals were detected by ESR analysis, but singlet oxygen was not. A randomized controlled trial demonstrated that aPDT with 1000 μg/ml TBO and red LED irradiation significantly suppressed dental plaque formation without harming teeth or the surrounding tissues. Conclusions aPDT has the potential to be a promising novel technical modality for dental plaque control. Trial registration This trial was registered with University Hospital Medical Information Network Clinical Trials Registry (number UMIN000012504). Electronic supplementary material The online version of this article (doi:10.1186/1472-6831-14-152) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | - Akira Aoki
- Department of Periodontology, Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-Ku, Tokyo 113-8549, Japan.
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48
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Hirota K, Inagaki S, Hamada R, Ishihara K, Miyake Y. Evaluation of a rapid oral bacteria quantification system using dielectrophoresis and the impedance measurement. Biocontrol Sci 2014; 19:45-9. [PMID: 24670618 DOI: 10.4265/bio.19.45] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
To clarify the availability of the dielectrophoretic impedance measurement (DEPIM) system as the evaluator for oral care, we evaluated the usefulness of DEPIM system by comparison with the standard plate counting (SPC) method. First, the relationship between the DEPIM results and bacterial concentration measured by SPC was clarified. Next, the measurement of the microorganism number in a mixed suspension was evaluated with DEPIM and SPC. The bacterial counts with DEPIM strongly correlated with those with SPC (r(2)=0.633-0.997) and this correlation was also shown in the measurement of a mixed bacterial suspension (ranging from 10(5) to 10(8) cfu/ml) of two bacterial species. Moreover, the experiments using dissociating enzymes to eliminate the influence of the size of the bacterial aggregates demonstrated that the microbial measurement results with DEPIM are unaffected by bacterial aggregates. This study demonstrated that bacterial counts with DEPIM strongly correlated with those with SPC and were unaffected by bacterial aggregates.
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Affiliation(s)
- Katsuhiko Hirota
- Department of Oral Microbiology, Institute of Health Biosciences, The University of Tokushima Graduate School
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Kikutani T, Tamura F, Tashiro H, Yoshida M, Konishi K, Hamada R. Relationship between oral bacteria count and pneumonia onset in elderly nursing home residents. Geriatr Gerontol Int 2014; 15:417-21. [PMID: 25130073 DOI: 10.1111/ggi.12286] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2014] [Indexed: 01/15/2023]
Abstract
AIM Oral bacteria, which are a source of infection for aspiration pneumonia, were examined in frail older adults with the aim of establishing a standard bacteria count that indicates the risk of pneumonia onset in this group. METHODS A survey of bacteria count in the saliva using a simple instrument for measurement of the number of oral bacteria, along with factors including swallowing function and nutritional status, was carried out in 691 elderly individuals requiring care (137 men; mean age 82.6 ± 8.3 years; 554 women; mean age 88.0 ± 7.1 years; total mean age 86.7 ± 7.8 years) at 16 nursing homes in Japan. All participants gave their consent for inclusion in the present study. During a 6-month follow-up period, participants who developed pneumonia were identified, and relationships between the factors measured at the start of the period and pneumonia onset were examined. RESULTS During the 6-month follow-up period, 33 participants (4.8%; 5 men, 28 women; mean age 88.3 ± 7.4 years) developed pneumonia. Pneumonia onset was significantly associated with reduced activities of daily living, swallowing dysfunction and undernourishment. Logistic regression analysis identified a saliva bacteria count of 10(8.5) colony-forming units/mL as an independent explanatory factor for pneumonia onset (P = 0.012, RR = 3.759). CONCLUSIONS Oral bacteria count of 10(8.5) colony-forming units/mL saliva in an elderly person requiring care was identified as a risk factor for pneumonia onset.
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Affiliation(s)
- Takeshi Kikutani
- Division of Clinical Oral Rehabilitation, The Nippon Dental University Graduate School of Life Dentistry at Tokyo, Japan; Division of Rehabilitation for Speech and Swallowing Disorders, Nippon Dental University Tama Oral Rehabilitation Clinic, Japan
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Ikeda M, Miki T, Atsumi M, Inagaki A, Mizuguchi E, Meguro M, Kanamori D, Nakagawa K, Watanabe R, Mano K, Aihara A, Hane Y, Mutoh T, Matsuo K. Effective elimination of contaminants after oral care in elderly institutionalized individuals. Geriatr Nurs 2014; 35:295-9. [DOI: 10.1016/j.gerinurse.2014.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 03/07/2014] [Accepted: 03/17/2014] [Indexed: 10/25/2022]
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