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Endo Y, Saito I. Spiritual Support to Improve Women's Mental Health after Miscarriage and Stillbirth: A Qualitative Study in Japan. Kobe J Med Sci 2024; 70:E1-E14. [PMID: 38462460 DOI: 10.24546/0100486284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
PROBLEM Miscarriage and stillbirth can severely impact maternal mental well-being. BACKGROUND In Japan, local municipalities must prepare systems to provide mental and social-spiritual support to women after miscarriage or stillbirth. OBJECTIVE To elucidate what spiritually supports the mental health of women who have experienced miscarriages and stillbirths. METHODS This analysis included 25 women who had experienced miscarriage or stillbirth at least one month previously and participated in self-help group meetings at least twice. Data were collected from March 2020 to March 2021 using two narrative interviews and questionnaires. FINDINGS The mothers led their lives "together" with their children. They derived spiritual support from others, such as "the presence of someone who is living now after having experienced anguish" and "others who acknowledge the presence of my child and me as a mother. " Further elements of the support included "resigning myself to face my grief" and "strong links to deceased children. " While facing their grief by accepting that this anguish cannot be replaced [with anything else] and resigning themselves to reality, their bond to their child is strengthened. CONCLUSION What women perceive as support after a miscarriage or stillbirth will be an important clue to care.
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Affiliation(s)
- Yuko Endo
- Department of Nursing, Kobe University Graduate School of Health Sciences, Kobe, Japan
- College of Nursing Art and Science, University of Hyogo, Akashi, Japan
| | - Izumi Saito
- Department of Nursing, Kobe University Graduate School of Health Sciences, Kobe, Japan
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Tadokoro Y, Hasegawa T, Takeda D, Murakami A, Yatagai N, Arimoro S, Iwata E, Saito I, Kusumoto J, Akashi M. Risk factors associated with prognosis of patients with medication-related osteonecrosis of the jaw. Head Neck 2024; 46:282-290. [PMID: 37962011 DOI: 10.1002/hed.27574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/29/2023] [Accepted: 11/05/2023] [Indexed: 11/15/2023] Open
Abstract
OBJECTIVES Medication-related osteonecrosis of the jaw (MRONJ) is a severe adverse effect of antiresorptive and/or antiangiogenic agents. As the treatment application for MRONJ is controversial, we aimed to identify the risk factors for poor prognosis and to help determine appropriate management. METHODS This study included 119 patients. Relevant clinical data were obtained for all the patients. In computed tomography images, osteosclerosis, osteolysis, cortical perforation (buccal or lingual), periosteal reaction, and sequestration were evaluated. RESULTS Multivariate analyses showed statistically significant associations between poor prognosis in patients with MRONJ and conservative treatment alone (hazard ratio [HR] 1.89), osteolysis (HR 4.67), and the absence of sequestration (HR 5.33). CONCLUSIONS Conservative treatment alone without clear objectives needs to be avoided, and osteolytic change could be the criteria for surgical intervention. As the boundary between the lesion and vital bone is indistinct, we recommend extensive surgery in cases with unpredictable sequestration.
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Affiliation(s)
- Yoshiaki Tadokoro
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Aki Murakami
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Satomi Arimoro
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Eiji Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Junya Kusumoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Hasegawa T, Arimoto S, Saito I, Yatagai N, Murakami A, Sasaki A, Tadokoro Y, Tani W, Kagawa K, Akashi M. Detection of bone marrow edema in differential diagnoses of odontogenic cysts using dual-energy computed tomography. Oral Maxillofac Surg 2023; 27:675-684. [PMID: 36121523 DOI: 10.1007/s10006-022-01113-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 09/13/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE In this study, we prospectively investigated the relationship between bone marrow edema (BME) and odontogenic cysts and explored the possibility of using dual-energy computed tomography (DECT) as an auxiliary tool for the diagnosis of odontogenic cysts. METHODS This cross-sectional study included 73 patients who underwent the DECT scan and surgery for odontogenic cysts or odontogenic tumors. The virtual noncalcium (VNCa) computed tomography (CT) values and CT values were measured at several sites. The predictor variable was diagnosis, and the other variables included age, sex, and sites. The primary outcome was VNCa CT value. Variables were tested using the chi-square test or the Kruskal-Wallis test. The VNCa CT and CT values were tested using the Scheffe test for multiple comparisons. All variables were analyzed as independent variables affecting the VNCa CT values around the lesion in the multiple regression analysis. RESULT There were 35 men and 38 women. The mean patient age was 50.0 ± 19.5 years (range: 8-86). The VNCa CT values (- 6.2 ± 34.3) around the lesion in patients with RCs were significantly higher than those in patients with dentigerous cysts (- 44.4 ± 28.6) and odontogenic keratocysts (- 67.3 ± 19.5). In multiple regression analysis, the VNCa CT values around the lesion showed a significant positive correlation with histological results (regression coefficient: - 0.605, P < 0.001). CONCLUSION The presence of BME is associated with radicular cysts, and DECT can be used as an auxiliary tool for radicular cyst diagnosis.
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Affiliation(s)
- Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Satomi Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Aki Murakami
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Aki Sasaki
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Yoshiaki Tadokoro
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Wakiko Tani
- Center for Radiology and Radiation Oncology, Kobe University Hospital, Kobe, Japan
| | - Kiyosumi Kagawa
- Center for Radiology and Radiation Oncology, Kobe University Hospital, Kobe, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Tadokoro Y, Takeda D, Saito I, Yatagai N, Kakei Y, Akashi M, Hasegawa T. The Efficacy of Carbon Dioxide Paste in Alleviating Pain in Patients After Neck Dissection: Protocol for a Double-Blinded, Randomized Controlled Trial. JMIR Res Protoc 2023; 12:e50500. [PMID: 37955944 PMCID: PMC10682928 DOI: 10.2196/50500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/14/2023] Open
Abstract
BACKGROUND Head and neck cancers that cause severe aesthetic and functional disorders normally metastasize to the cervical lymph nodes. Patients with cervical lymph node metastasis are undergoing neck dissection. Shoulder complaints are common after neck dissection, with patients reporting symptoms such as pain, weakness, shoulder droop, and disability. However, no safe and effective treatment is available for this condition at present. We will conduct a double-blinded, randomized controlled trial to evaluate the efficacy of carbon dioxide (CO2) paste in relieving pain in patients after neck dissection. OBJECTIVE This will be the first clinical study to compare the efficacy of CO2 paste with placebo in relieving postoperative pain in patients who underwent neck dissection. METHODS We will perform this trial at the Kobe University Hospital in Japan. Patients will be randomized 1:1 into the CO2 paste and control groups. Patients in the CO2 paste group will have the CO2 paste applied to the cervical surface skin for 10 minutes once per day for 14 consecutive days. The primary end point of the study is a change in the visual analog scale (VAS) scores of neck pain from baseline on day 1 (preapplication) to the end of drug application (day 15). Secondary end points include changes in the following parameters from baseline on day 1 to the end of drug application (day 15) or the study (day 29): neck pain VAS score (days 1-29), grip strength (days 1-15 and 1-29), VAS scores for subjective symptoms (the feeling of strangulation, numbness, swelling, and warmth in the neck and shoulder region) for days 1-15 and 1-29, whether the VAS score improved more than 30% (days 1-15), the arm abduction test (days 1-15 and 1-29), shoulder range of motion (abduction and flexion) for days 1-15 and 1-29, occurrence of skin disorders, and occurrence of serious side effects. Periodic monitoring will be conducted for participants during the trial. This study was approved by the certified review board of Kobe University. RESULTS The intervention commenced in May 2021 and will continue until March 2024. The collected data will provide information on the efficacy of the CO2 paste treatment. The primary end point will be compared using the Wilcoxon test, with the 1-sided significance level set at 5%. Each evaluation item will be summarized. Secondary efficacy end points will be analyzed to provide additional insights into the primary analysis. Findings based on the treatment effects are expected to be submitted for publication in 2025. CONCLUSIONS This trial will provide exploratory evidence of the efficacy and safety of CO2 paste in relieving pain in patients after neck dissection. TRIAL REGISTRATION Japan Registry of Clinical Trials (jRCT) identifier: jRCTs051210028; https://jrct.niph.go.jp/en-latest-detail/jRCTs051210028. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/50500.
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Affiliation(s)
- Yoshiaki Tadokoro
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Tadokoro Y, Takeda D, Murakami A, Yatagai N, Saito I, Arimoto S, Kakei Y, Akashi M, Hasegawa T. Transcutaneous carbon dioxide application suppresses the expression of cancer-associated fibroblasts markers in oral squamous cell carcinoma xenograft mouse model. PLoS One 2023; 18:e0290357. [PMID: 37594996 PMCID: PMC10437783 DOI: 10.1371/journal.pone.0290357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/04/2023] [Indexed: 08/20/2023] Open
Abstract
Oral squamous cell carcinoma (OSCC) is the most common head and neck cancer. Cancer-associated fibroblasts (CAFs) are the main stromal cells in the tumor microenvironment (TME). As CAFs promote tumor progression and hypoxia in the TME, regulating the conversion of normal fibroblasts (NFs) into CAFs is essential for improving the prognosis of patients with OSCC. We have previously reported the antitumor effects of transcutaneous carbon dioxide (CO2) application in OSCC. However, the effects of reducing hypoxia in the TME remain unclear. In this study, we investigated whether CO2 administration improves the TME by evaluating CAFs marker expression. Human OSCC cells (HSC-3) and normal human dermal fibroblasts (NHDF) were coinjected subcutaneously into the dorsal region of mice. CO2 gas was applied twice a week for 3 weeks. The tumors were harvested six times after transcutaneous CO2 application. The expression of CAFs markers (α-SMA, FAP, PDPN, and TGF-β) were evaluated by using real-time polymerase chain reaction and immunohistochemical staining. The expression of α-SMA, FAP, PDPN, and TGF-β was significantly increased over time after co-injection. In the CO2-treated group, tumor growth was significantly suppressed after treatment initiation. In addition, the mRNA expression of these markers was significantly inhibited. Furthermore, immunohistochemical staining revealed a significant decrease in the protein expression of all CAFs markers in the CO2-treated group. We confirmed that transcutaneous CO2 application suppressed CAFs marker expression and tumor growth in OSCC xenograft mouse model.
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Affiliation(s)
- Yoshiaki Tadokoro
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Aki Murakami
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Satomi Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe
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Murakami A, Takeda D, Hirota J, Saito I, Amano-Iga R, Yatagai N, Arimoto S, Kakei Y, Akashi M, Hasegawa T. Relationship of Mitochondrial-Related Protein Expression with the Differentiation, Metastasis, and Poor Prognosis of Oral Squamous Cell Carcinoma. Cancers (Basel) 2023; 15:4071. [PMID: 37627097 PMCID: PMC10452162 DOI: 10.3390/cancers15164071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Mitochondrial dysfunction and respiratory function changes have been consistently associated with the initiation and progression of cancer. The purpose of this study was to retrospectively investigate the expression of mitochondrial tumor-suppressor and DNA-repair proteins in patients with oral squamous cell carcinoma (OSCC) and to evaluate the relationship between their expression and prognosis. We enrolled 197 patients with OSCC who underwent surgical resection between August 2013 and October 2018. Clinical, pathological, and epidemiological data were retrospectively collected from hospital records. The expression of peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), mitochondrial transcription factor A, mitochondrial tumor suppressor gene 1, silent information regulator 3, and 8-hydroxyguanine DNA glycosylase was investigated using immunochemistry. The 3-year disease-specific survival (DSS) rates of patients showing positive expression of all selected proteins were significantly higher than those of patients showing a lack of expression. Multivariate analysis revealed that the expression of PGC-1α (hazard ratio, 4.684) and vascular invasion (hazard ratio, 5.690) can predict the DSS rate (p < 0.001). Low PGC-1α expression and vascular invasion are potential clinically effective predictors of the prognosis of OSCC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (A.M.); (D.T.); (S.A.); (Y.K.); (M.A.)
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Gotoh T, Watanabe T, Saito I. Kinematic Effects on Probability Density Functions of Energy Dissipation Rate and Enstrophy in Turbulence. Phys Rev Lett 2023; 130:254001. [PMID: 37418738 DOI: 10.1103/physrevlett.130.254001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/27/2023] [Accepted: 05/30/2023] [Indexed: 07/09/2023]
Abstract
Direct numerical simulation and theoretical analyses showed that the probability density functions (PDFs) of the energy dissipation rate and enstrophy in turbulence are asymptotically stretched gamma distributions with the same stretching exponent, and both the left and right tails of the enstrophy PDF are longer than those of the energy dissipation rate regardless of the Reynolds number. The differences in PDF tails arise due to the kinematics, with differences in the number of terms contributing to the dissipation rate and enstrophy. Meanwhile, the stretching exponent is determined by the dynamics and likeliness of singularities.
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Affiliation(s)
- Toshiyuki Gotoh
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso, Nagoya 466-8555, Japan
- Research and Education Center for Natural Sciences, Keio University, Hiyoshi, Yokohama 223-8521, Japan
| | - Takeshi Watanabe
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso, Nagoya 466-8555, Japan
| | - Izumi Saito
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Gokiso, Nagoya 466-8555, Japan
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Hirota J, Hasegawa T, Inui A, Takeda D, Amano-Iga R, Yatagai N, Saito I, Arimoto S, Akashi M. Local application of a transcutaneous carbon dioxide paste prevents excessive scarring and promotes muscle regeneration in a bupivacaine-induced rat model of muscle injury. Int Wound J 2023; 20:1151-1159. [PMID: 36250918 PMCID: PMC10031219 DOI: 10.1111/iwj.13974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/20/2022] [Accepted: 09/27/2022] [Indexed: 11/29/2022] Open
Abstract
In postoperative patients with head and neck cancer, scar tissue formation may interfere with the healing process, resulting in incomplete functional recovery and a reduced quality of life. Percutaneous application of carbon dioxide (CO2 ) has been reported to improve hypoxia, stimulate angiogenesis, and promote fracture repair and muscle damage. However, gaseous CO2 cannot be applied to the head and neck regions. Previously, we developed a paste that holds non-gaseous CO2 in a carrier and can be administered transdermally. Here, we investigated whether this paste could prevent excessive scarring and promote muscle regeneration using a bupivacaine-induced rat model of muscle injury. Forty-eight Sprague Dawley rats were randomly assigned to either a control group or a CO2 group. Both groups underwent surgery to induce muscle injury, but the control group received no treatment, whereas the CO2 group received the CO2 paste daily after surgery. Then, samples of the experimental sites were taken on days 3, 7, 14, and 21 post-surgery to examine the following: (1) inflammatory (interleukin [IL]-1β, IL-6), and transforming growth factor (TGF)-β and myogenic (MyoD and myogenin) gene expression by polymerase chain reaction, (2) muscle regeneration with haematoxylin and eosin staining, and (3) MyoD and myogenin protein expression using immunohistochemical staining. Rats in the CO2 group showed higher MyoD and myogenin expression and lower IL-1β, IL-6, and TGF-β expression than the control rats. In addition, treated rats showed evidence of accelerated muscle regeneration. Our study demonstrated that the CO2 paste prevents excessive scarring and accelerates muscle regeneration. This action may be exerted through the induction of an artificial Bohr effect, which leads to the upregulation of MyoD and myogenin, and the downregulation of IL-1β, IL-6, and TGF-β. The paste is inexpensive and non-invasive. Thus, it may be the treatment of choice for patients with muscle damage.
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Affiliation(s)
- Junya Hirota
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Atsuyuki Inui
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Rika Amano-Iga
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Satomi Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Hasegawa T, Kobayashi E, Amano R, Saito I, Takeda D, Kakei Y, Kimoto A, Sakakibara A, Akashi M. Time to Recurrence Associated With Poor Prognosis in Japanese Oral Squamous Cell Carcinoma Patients. J Maxillofac Oral Surg 2022; 21:856-864. [PMID: 36274898 PMCID: PMC9474988 DOI: 10.1007/s12663-021-01527-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 02/03/2021] [Indexed: 11/25/2022] Open
Abstract
Purpose Recurrence in oral squamous cell carcinoma (OSCC) is not rare. Due to lack of studies assessing characteristics of recurrent OSCC, including time to recurrence and outcomes, we sought to investigate its characteristics, time to recurrence, and outcomes in Japanese OSCC patients. Methods This study was a nonrandomized retrospective cohort study in a tertiary referral centre. It included 208 (117 men and 91 women) patients with recurrent oral cancer who underwent major curative surgery in the Department of Oral and Maxillofacial Surgery at Kobe University Hospital between January 1999 and April 2017. The outcomes were disease-specific survival (DSS) and overall survival (OS). Results In multivariable Cox proportional hazards analysis, the time to recurrence (hazard ratio [HR] 3.55, 95% confidence interval [CI] 1.69-6.63; P = 0.001), extranodal extension (ENE, HR 2.72, 95% CI 1.51-4.89; P = 0.001), and high T stage (HR 2.00, 95% CI 1.01-3.97; P = 0.046) were independent predictors of DSS. The time to recurrence (HR 3.29, 95% CI 1.82-5.96; P < 0.001) and ENE (HR 2.64, 95% CI 1.52-4.56; P = 0.001) were independent predictors of OS. Conclusion Time to recurrence, extranodal extension, and higher T stage were independent prognosis predictors in OSCC.
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Affiliation(s)
- Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Erina Kobayashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Rika Amano
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Akira Kimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Akiko Sakakibara
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017 Japan
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Yatagai N, Hasegawa T, Kyotani K, Noda T, Amano R, Saito I, Arimoto S, Takeda D, Kakei Y, Akashi M. Exploratory clinical trial to evaluate the efficacy and safety of carbon dioxide paste in healthy people. Medicine (Baltimore) 2022; 101:e29511. [PMID: 35866800 PMCID: PMC9302358 DOI: 10.1097/md.0000000000029511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION Scarring and pain are postoperative complications in patients after head and neck cancer treatment; however, there is no effective treatment. These complications are affected by local blood flow disorders, and it is well known that the transcutaneous application of carbon dioxide (CO2) improves local blood flow. Previously, we have shown that the transcutaneous application of carbon dioxide causes absorption of CO2 and increase the oxygen (O2) pressure in the treated tissue; it is expected that the application of CO2 may reduce scarring and pain caused by cancer treatment. We newly introduced the CO2 paste as a new CO2 application method, which does not need to use CO2 gas directly. In this study, we aimed to apply of CO2 paste to healthy people and to investigate its usefulness, safety and feasibility by analysing the increase in blood flow and frequency of adverse events. METHODS We applied carbon dioxide paste to skin over the sternocleidomastoid and gastrocnemius muscles of eight healthy volunteers. The changes in blood flow before and after the CO2 paste application using dynamic MRI, and changes in the vital signs were evaluated. RESULTS In the neck area and middle layer of the lower leg, the signal intensity (SI) significantly increased 60 seconds after application. In the surface layer of the lower leg, the SI was significantly increased 60 and 300 seconds after paste application. Although mild heat was noted after the paste application, no obvious adverse events occurred. CONCLUSION We demonstrated the increase in SI by dynamic MRI at the site of the carbon dioxide paste application, which indicates the paste application is effective in improving the blood flow.
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Affiliation(s)
- Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
- *Correspondence: Takumi Hasegawa, Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan (e-mail: )
| | - Katsusuke Kyotani
- Center for Radiology and Radiation Oncology, Kobe University Hospital, Kobe, Japan
| | - Tomohiro Noda
- Center for Radiology and Radiation Oncology, Kobe University Hospital, Kobe, Japan
| | - Rika Amano
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Satomi Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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11
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Tadokoro Y, Hasegawa T, Takeda D, Murakami A, Yatagai N, Iwata E, Saito I, Kusumoto J, Akashi M. Factors Associated with Treatment Outcomes and Pathological Features in Patients with Osteoradionecrosis: A Retrospective Study. Int J Environ Res Public Health 2022; 19:ijerph19116565. [PMID: 35682149 PMCID: PMC9180928 DOI: 10.3390/ijerph19116565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/19/2022] [Accepted: 05/26/2022] [Indexed: 12/10/2022]
Abstract
A standard treatment for osteoradionecrosis (ORN) has not yet been established because of the diversity. Therefore, identifying the risk factors for a poor prognosis is essential. This study retrospectively investigated the factors associated with the prognosis of ORN in 68 patients. Relevant clinical data of all patients were obtained. Of the patients, 16 who underwent extensive surgery underwent histopathological analysis. The necrotic changes of the anterior and posterior margins in the cortical and cancellous bones were investigated. Multivariate analyses showed statistically significant associations between poor prognosis in patients with ORN and high radiation dose (hazard ratio [HR] 1.15), orocutaneous fistula (HR 2.93), and absence of sequestration (HR 2.49). Histopathological analysis showed a viable anterior margin of the middle portion of the cortical bone for all recovered cases; in contrast, most cases (75%) with a poor prognosis showed necrotic changes. The anterior margin of the cancellous bone was viable and resilient to high irradiation, regardless of the prognosis. These results suggest that patients with orocutaneous fistula should receive early surgical intervention, even if the affected area is limited or asymptomatic. In extensive surgery, a sufficient safety margin of necrotic bone, particularly in the anterior region, is required to improve the prognosis.
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12
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Iwasa Y, Suzuki M, Saito I. Home Health Nursing Care Time for Patients with Parkinson's Disease. J Pers Med 2022; 12:714. [PMID: 35629137 PMCID: PMC9143267 DOI: 10.3390/jpm12050714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/20/2022] [Accepted: 04/27/2022] [Indexed: 02/04/2023] Open
Abstract
There is an urgent need to provide personalized care more efficiently to patients with Parkinson's disease (PD) who live at home. To understand the impact of patient attributes and features on nursing care time, we assessed the amount of time required to perform home visits to patients with PD and identified patient characteristics related to differences in nursing care time. Twenty patient (median age 78.0 years) visits were video-recorded. Nursing care activities were categorized, while time spent on them was measured to identify differences in care time by patient. Correlations between patient characteristics and care times were calculated. The median time per visit was 49 min and 7 s. Time was mostly spent on daily living assistance (76.0%), followed by medical care assistance (10.0%) and record keeping and administration (14.0%). Results suggested that patient care was characterized by longer time spent on patient comfort, physical therapy, and patient consultation or education. In general, time per visit increased with patients' age. The variation in care implementation time tended to be large in daily living assistance and small in medical care assistance. These data may be useful for providing and managing personalized care for patients. These data can also contribute to making nurse care more specialized.
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Affiliation(s)
- Yumi Iwasa
- Department of Nursing, Morinomiya University of Medical Sciences, 1-26-16 Nanko-kita, Suminoe-ku, Osaka 558-8611, Osaka, Japan
- Department of Nursing, Graduate School of Health Sciences, Kobe University, 7-10-2 Tomogaoka, Suma-ku, Kobe 654-0142, Hyogo, Japan;
| | - Miyoko Suzuki
- Akebi, Home-Visit Nursing Station, 836-A Anase-Ueki, Shikama-ku, Himeji 672-8030, Hyogo, Japan;
| | - Izumi Saito
- Department of Nursing, Graduate School of Health Sciences, Kobe University, 7-10-2 Tomogaoka, Suma-ku, Kobe 654-0142, Hyogo, Japan;
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13
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John JD, Nishimoto S, Kadowaki N, Saito I, Okano K, Okano S, Zahn DRT, Masuzawa T, Yamada T, Chua DHC, Ito T. Quantum device designing (QDD) for future semiconductor engineering. Rev Sci Instrum 2022; 93:034703. [PMID: 35365006 DOI: 10.1063/5.0081544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
In semiconductor device history, a trend is observed where narrowing and increasing the number of material layers improve device functionality, with diodes, transistors, thyristors, and superlattices following this trend. While superlattices promise unique functionality, they are not widely adopted due to a technology barrier, requiring advanced fabrication, such as molecular beam epitaxy and lattice-matched materials. Here, a method to design quantum devices using amorphous materials and physical vapor deposition is presented. It is shown that the multiplication gain M depends on the number of layers of the superlattice, N, as M = kN, with k as a factor indicating the efficiency of multiplication. This M is, however, a trade-off with transit time, which also depends on N. To demonstrate, photodetector devices are fabricated on Si, with the superlattice of Se and As2Se3, and characterized using current-voltage (I-V) and current-time (I-T) measurements. For superlattices with the total layer thicknesses of 200 nm and 2 μm, the results show that k200nm = 0.916 and k2μm = 0.384, respectively. The results confirm that the multiplication factor is related to the number of superlattice layers, showing the effectiveness of the design approach.
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Affiliation(s)
- J D John
- Department of Physics, International Christian University, 3-10-2 Osawa, Mitaka, Tokyo 181-8585, Japan
| | - S Nishimoto
- Department of Physics, International Christian University, 3-10-2 Osawa, Mitaka, Tokyo 181-8585, Japan
| | - N Kadowaki
- Department of Physics, International Christian University, 3-10-2 Osawa, Mitaka, Tokyo 181-8585, Japan
| | - I Saito
- Department of Physics, International Christian University, 3-10-2 Osawa, Mitaka, Tokyo 181-8585, Japan
| | - K Okano
- Department of Physics, International Christian University, 3-10-2 Osawa, Mitaka, Tokyo 181-8585, Japan
| | - S Okano
- Semiconductor Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
| | - D R T Zahn
- Semiconductor Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
| | - T Masuzawa
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Japan
| | - T Yamada
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba 305-8565, Japan
| | - D H C Chua
- Department of Material Science and Engineering, National University of Singapore, 9 Engineering Drive, Singapore 119077
| | - T Ito
- Eiwa Bussan Company Limited, 2-9-14 Uchikanda, Chiyoda-ku, Tokyo, Japan
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Yamane N, Ikeda A, Tomooka K, Saito I, Maruyama K, Eguchi E, Suyama K, Fujii A, Shiba T, Tanaka K, Kooka A, Nakamura S, Kajita M, Kawamura R, Takata Y, Osawa H, Steptoe A, Tanigawa T. Salivary Alpha-Amylase Activity and Mild Cognitive Impairment among Japanese Older Adults: The Toon Health Study. J Prev Alzheimers Dis 2022; 9:752-757. [PMID: 36281680 DOI: 10.14283/jpad.2022.51] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND There is growing interest in examining objective markers for early identification and behavioral intervention to prevent dementia and mild cognitive impairment in clinical and community settings. OBJECTIVE To investigate the association between salivary alpha-amylase as an objective measure of psychological stress response and mild cognitive impairment for the implication of psychological stress in the development of mild cognitive impairment. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study involved 865 participants aged ≥ 65 years. A saliva sample was collected in the morning, and the levels of salivary alpha-amylase were assayed. Mild cognitive impairment was evaluated using the Japanese version of the Montreal Cognitive Assessment; a score < 26 was indicative of mild cognitive impairment. A multivariable logistic regression model was used to examine the association of salivary alpha-amylase and mild cognitive impairment after adjusting for age, sex, current drinking status, current smoking status, body mass index, hypertension, diabetes mellitus, physical activity, education, social support, social network, and heart rate variability. RESULTS Salivary alpha-amylase was associated with mild cognitive impairment (the multivariable-adjusted odds ratio [95% confidence interval] for the 1-standard deviation increment of log-transformed salivary alpha-amylase was 1.24 [1.07-1.44]). This significant association persisted after adjusting for various confounding factors. CONCLUSION Elevation of salivary alpha-amylase was associated with mild cognitive impairment among Japanese community-dwelling older adults. This suggests that salivary alpha-amylase is a useful objective marker of psychological stress responses associated with mild cognitive impairment.
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Affiliation(s)
- N Yamane
- Takeshi Tanigawa, MD, PhD, Department of Public Health, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. Phone: +81 (3) 5802-1049 Fax: +81 (3) 3814-0305,
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15
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Amano-Iga R, Hasegawa T, Takeda D, Murakami A, Yatagai N, Saito I, Arimoto S, Kakei Y, Sakakibara A, Akashi M. Local Application of Transcutaneous Carbon Dioxide Paste Decreases Inflammation and Accelerates Wound Healing. Cureus 2021; 13:e19518. [PMID: 34917429 PMCID: PMC8670822 DOI: 10.7759/cureus.19518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2021] [Indexed: 11/05/2022] Open
Abstract
INTRODUCTION Delayed wound healing after surgery lowers the long-term quality of a patient's life and leads to discomfort and pain. However, treatments for wound healing are often difficult and have not yet been fully established. In this study, we investigated the effect of a special paste that can be administered transdermally and holds a non-gaseous carbon dioxide (CO2) source in its carrier, which can be applied to the head and neck region for wound healing in a rat skin defect model. METHODS Forty-eight Sprague Dawley rats were randomized into control and CO2 groups. We punched a 6.2-mm wound on the back of each rat. The control rats were left untreated, whereas rats in the CO2 group were treated with the CO2 paste every day after surgery. We evaluated wound healing 3, 7, 14, and 21 days after wounding by analyzing the diameter of the wound, gene expression of inflammatory markers vascular endothelial growth factor (VEGF), transforming growth factor (TGF)-β, hypoxia-inducible factor (HIF)-1α, interleukin (IL)-1β, and IL-6 using quantitative real-time polymerase chain reaction, hematoxylin and eosin, and immunohistochemical staining patterns. RESULTS Rats in the CO2 group showed accelerated wound healing compared to those in the control group. Furthermore, VEGF and TGF-β were overexpressed, whereas HIF-1α, IL-1β, and IL-6 were downregulated in the rats treated with CO2. Immunohistochemical analysis also revealed similar patterns of expression. CONCLUSION Taken together, the CO2 paste promoted wound healing by regulating the hypoxic environment, reducing inflammation, and accelerating angiogenesis.
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Affiliation(s)
- Rika Amano-Iga
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Takumi Hasegawa
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Daisuke Takeda
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Aki Murakami
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Nanae Yatagai
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Izumi Saito
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Satomi Arimoto
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Yasumasa Kakei
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Akiko Sakakibara
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
| | - Masaya Akashi
- Oral and Maxillofacial Surgery, Kobe University Hospital, Kobe, JPN
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16
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Hasegawa T, Sasaki A, Saito I, Arimoto S, Yatagai N, Hiraoka Y, Takeda D, Kakei Y, Akashi M. Success of dental implants in patients with large bone defect and analysis of risk factors for implant failure: a non-randomized retrospective cohort study. Clin Oral Investig 2021; 26:2743-2750. [PMID: 34783914 DOI: 10.1007/s00784-021-04249-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 10/23/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVES This study aimed to retrospectively investigate the success and survival rates of dental implants used for dentomaxillary prostheses at our hospital and the risk factors associated with large bone defects. MATERIALS AND METHODS A total of 138 external joint system implants used for dentomaxillary prostheses in 40 patients with large bone defects were included in this study. The alveolar bone at the site of implant insertion was evaluated using panoramic radiography and computed tomography. Various risk factors (demographic characteristics, dental status, and operative factors such as the employment of alveolar bone augmentation, the site, the length, and diameter of implants) for implant failure and complete implant loss were investigated using univariate and multivariate analyses. The associations between the variables and the success and survival rates of dental implants were analyzed using the multivariate Cox proportional hazard models. RESULTS The 10-year overall success and survival rates were 81.3% and 88.4% in this study. Multivariable analysis showed that the male sex (HR 6.22), shorter implants (≤ 8.5 mm) (HR 5.21), and bone augmentation (HR 2.58) were independent predictors of success rate. Bone augmentation (HR 5.14) and narrow implants (≤ 3.3 mm) (HR 3.86) were independent predictors of the survival rate. CONCLUSION Male sex, shorter or narrow implants, and bone augmentation were independent risk factors for dental implants used in dentomaxillary prostheses in patients with large bone defects. CLINICAL RELEVANCE Clinicians should consider these risk factors and pay close attention to the management of these patients.
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Affiliation(s)
- Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Aki Sasaki
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Satomi Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Yujiro Hiraoka
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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17
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Yatagai N, Hasegawa T, Amano R, Saito I, Arimoto S, Takeda D, Kakei Y, Akashi M. Transcutaneous Carbon Dioxide Decreases Immunosuppressive Factors in Squamous Cell Carcinoma In Vivo. Biomed Res Int 2021; 2021:5568428. [PMID: 34307656 PMCID: PMC8270696 DOI: 10.1155/2021/5568428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/27/2021] [Accepted: 06/14/2021] [Indexed: 11/18/2022]
Abstract
INTRODUCTION In recent years, the tumour immunosuppressive mechanism has attracted attention as a cause of tumour chemoresistance. Although chemoresistance and immunosuppression of tumours have been reported to be associated with a hypoxic environment, effective treatments to improve hypoxia in tumours have not yet been established. We have previously applied carbon dioxide (CO2) to squamous cell carcinoma and have shown that improvement in local oxygenation has an antitumour effect. However, the effects of local CO2 administration on tumour immunosuppression, chemoresistance, and combination with chemotherapy are unknown. In this study, we investigated the effects of local CO2 administration on squamous cell carcinoma and the effects of combined use with chemotherapy, focusing on the effects on tumour immunosuppressive factors. METHODS Human oral squamous cell carcinoma (HSC-3) was transplanted subcutaneously into the back of a nude mouse, and CO2 and cisplatin were administered. After administration twice a week for a total of 4 times, tumours were collected and the expression of tumour immunosuppressive factors (PD-L1, PD-L2, and galectin-9) was evaluated using real-time polymerase chain reaction and immunostaining. RESULTS Compared with the control group, a significant decrease in the mRNA expression of PD-L1 was observed in both, CO2-treated and combination groups. Similarly, the expression of PD-L2 and galectin-9 decreased in the CO2-treated and combination groups. Furthermore, immunostaining also showed a significant decrease in the protein expression of tumour immunosuppressive factors in the CO2-treated and combination groups. CONCLUSION It was confirmed that the tumour immunosuppressive factors decreased due to local CO2 administration to the mouse model. CO2 administration has the potential to improve the hypoxic environment in tumours, and combined use with chemotherapy may also improve tumour immunosuppression.
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MESH Headings
- Administration, Cutaneous
- Animals
- Body Weight/drug effects
- Carbon Dioxide/administration & dosage
- Carbon Dioxide/pharmacology
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/immunology
- Carcinoma, Squamous Cell/pathology
- Cell Line, Tumor
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Immunosuppression Therapy
- Male
- Mice, Inbred BALB C
- Mice, Nude
- Mouth Neoplasms/genetics
- Mouth Neoplasms/immunology
- Mouth Neoplasms/pathology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Tumor Burden/drug effects
- Mice
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Affiliation(s)
- Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Rika Amano
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Satomi Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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18
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Saito I, Hasegawa T, Kawashita Y, Kato S, Yamada SI, Kojima Y, Ueda N, Umeda M, Shibuya Y, Kurita H, Kirita T, Akashi M. Association between dental extraction after radiotherapy and osteoradionecrosis: A multi-centre retrospective study. Oral Dis 2021; 28:1181-1187. [PMID: 33650256 DOI: 10.1111/odi.13826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 02/12/2021] [Accepted: 02/16/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Radiotherapy (RT) carries a substantial risk for the development of osteoradionecrosis (ORN) of the jaw. This study was performed to investigate the relationship between dental extractions after RT and the development of ORN. MATERIAL AND METHODS Thirty-two patients with head and neck cancer who underwent tooth extraction after RT were investigated for correlations between the development of ORN and various factors. RESULTS Postextraction ORN was diagnosed in 12 (12.1%) teeth of 9 patients. The RT dose against the site of tooth extraction was 62.0 and 37.4 Gy in the ORN and Non-ORN groups, respectively (p < .001). The duration from RT to tooth extraction was 41.2 and 28.2 months in the ORN and Non-ORN groups, respectively (p = .025). Tooth extraction was significantly associated with ORN in patients with a high RT dose against the site (odds ratio = 1.231) and a longer duration of time from RT (odds ratio = 1.084). CONCLUSIONS Extraction of non-restorable teeth and those with a poor prognosis should not necessarily be postponed even when patients are undergoing RT. However, clinicians should pay special attention to postoperative management after tooth extraction in patients with a high RT dose and longer time from RT.
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Affiliation(s)
- Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yumiko Kawashita
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Shinichiro Kato
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shin-Ichi Yamada
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yuka Kojima
- Department of Dentistry and Oral Surgery, Kansai Medical University, Hirakata, Japan
| | - Nobuhiro Ueda
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - Masahiro Umeda
- Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Yasuyuki Shibuya
- Department of Oral and Maxillofacial Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiroshi Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Tadaaki Kirita
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Hasegawa T, Yatagai N, Furukawa T, Wakui E, Saito I, Takeda D, Kakei Y, Sakakibara A, Nibu KI, Akashi M. The prospective evaluation and risk factors of dysphagia after surgery in patients with oral cancer. J Otolaryngol Head Neck Surg 2021; 50:4. [PMID: 33494830 PMCID: PMC7830751 DOI: 10.1186/s40463-020-00479-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 11/16/2020] [Indexed: 11/10/2022] Open
Abstract
Background This prospective study investigated the change of swallowing ability using the Swallowing Ability Scale System (SASS) and swallowing-related quality of life (QOL) by Performance Status Scale for Head and Neck Cancer patients (PSS-H&N). This study also investigated the risk factors for postoperative dysphagia in patients who received reconstructive surgery for oral cancer. Subjects and Methods This study included 64 patients (33 men and 31 women) who underwent radical surgery with neck dissection and reconstructive surgery for oral cancers between July 2014 and February 2018. We evaluated risk factors for poor swallowing ability after treatment, including demographic factors, preoperative factors and perioperative factors, with univariate and multivariate analyses. The change of swallowing ability by the SASS and swallowing-related QOL by PSS-H&N were evaluated prospectively prior to the initiation of surgery within 1 week and at 1 and 3 months after treatment. Results Advanced T stage (T3, 4) (odds ratio (OR) = 79.71), bilateral neck dissection (OR = 20.66) and the resection of unilateral or bilateral suprahyoid muscles (OR = 17.00) were associated with poor swallowing ability after treatment. The scores for time for food intake and Eating in Public were associated with decrease of QOL in the poor group. Conclusions We propose that clinicians consider the risk factors identified in this study and pay close attention to the management of oral cancer patients with reconstructive surgery. Graphical abstract ![]()
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Affiliation(s)
- Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Nanae Yatagai
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Tatsuya Furukawa
- Department of Otolaryngology-Head and Neck Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Emi Wakui
- Department of Otolaryngology-Head and Neck Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Akiko Sakakibara
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Ken-Ichi Nibu
- Department of Otolaryngology-Head and Neck Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Kobayashi Y, Kinoshita T, Matsumoto A, Yoshino K, Saito I, Xiao JZ. Bifidobacterium Breve A1 Supplementation Improved Cognitive Decline in Older Adults with Mild Cognitive Impairment: An Open-Label, Single-Arm Study. J Prev Alzheimers Dis 2020; 6:70-75. [PMID: 30569089 DOI: 10.14283/jpad.2018.32] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVES We previously reported the therapeutic potential of Bifidobacterium breve A1 (B. breve A1) for preventing cognitive impairment in Alzheimer's disease model mice, which suggested that supplementation of the probiotics could be an effective therapeutic strategy for managing cognitive function in mild cognitive impairment (MCI). DESIGN AND SETTINGS We conducted an open-label, single-arm study to examine the effects of 24-week supplementation of B. breve A1 on elderly with MCI in Aki Orthopedics Rehabilitation Clinic in Japan. PARTICIPANTS 27 participants were screened by their Mini Mental State Examination (MMSE) scores. MEASUREMENTS Cognitive function was assessed using MMSE and Digit Symbol Substitution Test (DSST) at baseline and every 8 weeks. Mental condition and quality of life for gastrointestinal symptoms were measured using the Profile of Mood States 2nd Edition (POMS2), and the Gastrointestinal Symptom Rating Scale (GSRS). RESULTS Of the 27 participants enrolled, 19 completed the study. MMSE scores were significantly increased during the intervention by mixed model Dunnett's test and Wilcoxon signed-rank tests (+1.7, P < 0.01). POMS2 and GSRS scores were significantly improved during intervention when analyzed by Wilcoxon signed-rank tests. CONCLUSION The present study showed that oral supplementation of B. breve A1 in participants with MCI improved cognitive function, thus suggesting the potential of B. breve A1 for improving cognitive function and maintaining quality of life of the elderly. Further randomized, double-blind placebo-controlled studies are worth conducting to examine the beneficial effect of B. breve A1.
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Affiliation(s)
- Y Kobayashi
- Yodai Kobayashi, Morinaga Milk Industry Co., Ltd., Next Generation Science Institute, 5-1-83 Higashihara, Zama, Kanagawa 252-8583, Japan, Tel: 81-46-252-3068; Fax: 81-46-252-3077, E-mail:
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Hasegawa T, Iga T, Takeda D, Amano R, Saito I, Kakei Y, Kusumoto J, Kimoto A, Sakakibara A, Akashi M. Neutrophil-lymphocyte ratio associated with poor prognosis in oral cancer: a retrospective study. BMC Cancer 2020; 20:568. [PMID: 32552873 PMCID: PMC7302163 DOI: 10.1186/s12885-020-07063-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 06/11/2020] [Indexed: 02/07/2023] Open
Abstract
Background Prognostic biomarkers provide essential information about a patient’s overall outcome. However, existing biomarkers are limited in terms of either sample collection, such as requiring tissue specimens, or the process, such as prolonged time for analysis. In view of the need for convenient and non-invasive prognostic biomarkers for oral cancer, we aimed to investigate the prognostic values of neutrophil-to-lymphocyte ratio, lymphocyte-to-monocyte ratio, and platelet-to-lymphocyte ratio in patient survival. We also aimed to explore the associations of these ratios with the clinicopathologic characteristics of Japanese oral squamous cell carcinoma patients. Methods This study was a non-randomized retrospective cohort study in a tertiary referral center. We included 433 patients (246 men, 187 women) who underwent radical surgery for oral cancers between January 2001 and December 2013. We evaluated various risk factors for poor prognosis including neutrophil-to-lymphocyte ratio, lymphocyte-to-monocyte ratio, and platelet-to-lymphocyte ratio with univariate and multivariate analyses. The disease-specific survival and overall survival rates of patients were compared among the factors and biomarkers. Results In multivariable Cox proportional hazards analysis, high neutrophil-to-lymphocyte ratio (hazard ratio 2.87, 95% confidence interval 1.59–5.19, P < 0.001), moderately or poorly differentiated histology (hazard ratio 2.37, 95% confidence interval 1.32–4.25, P < 0.001), and extranodal extension (hazard ratio 1.95, 95% confidence interval 1.13–3.35, P = 0.016) were independent predictors of disease-specific survival. High neutrophil-to-lymphocyte ratio (hazard ratio 2.30, 95% confidence interval 1.42–3.72, P < 0.001), moderately or poorly differentiated (hazard ratio 1.72, 95% confidence interval 1.07–2.76, P = 0.025), and extranodal extension (hazard ratio 1.79, 95% confidence interval 1.13–2.84, P = 0.013) were independent predictors of overall survival. Conclusions Neutrophil-to-lymphocyte ratio might be a potential independent prognostic factor in Japanese oral squamous cell carcinoma patients.
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Affiliation(s)
- Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Tomoya Iga
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Rika Amano
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Junya Kusumoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Akira Kimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Akiko Sakakibara
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Matsuo R, Tomooka K, Noda A, Maruyama K, Saito I, Tanigawa T. The effect of sleep disordered breathing and excessive daytime sleepiness on the risk of motor vehicle crash: the toon health study. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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OSHIMA A, Tomooka K, Ikeda A, Maruyama K, Saito I, Tanigawa T. Association of objective sleepiness with motor vehicle crash among japanese community residents: the toon health study. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yamazaki T, Ushikoshi-Nakayama R, Shirone K, Suzuki M, Abe S, Matsumoto N, Inoue H, Saito I. Evaluation of the effect of a heat-killed lactic acid bacterium, Enterococcus faecalis 2001, on oral candidiasis. Benef Microbes 2019. [DOI: 10.3920/bm2018.0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effect of a preparation of heat-killed Gram-positive lactic acid bacteria Enterococcus faecalis 2001 (EF-2001) on oral candidiasis was evaluated by two studies. An in vitro study was performed to assess the inhibitory effect on mycelial growth of Candida strains isolated from a patient with oral candidiasis, and a clinical study was done in patients with oral candidiasis. In the in vitro study, EF-2001 inhibited mycelial growth of IT-1, a Candida strain isolated from a patient with oral candidiasis, at concentrations ≥2.34×109 cells/ml. An open clinical study was performed in 13 patients with oral candidiasis. The subjects took a powder containing 7.5×1011 heat-killed EF-2001 once a day before bedtime for seven consecutive days. In 11 of the 12 patients available for analysis (92%), the oral Candida load (cfu/swab) showed a significant decrease (P=0.01079, d=-0.437). There was a 55% decrease of Candida albicans and a 93.8% decrease of Candida glabrata. The following symptoms showed significant improvement: tinnitus (P=0.048, d=-0.462), cold feeling (P=0.048, d=-0.463), and depression (P=0.019, d=-0.34). In addition, 4 out of 26 oral symptoms tended to improve. These results suggest that EF-2001 significantly decreased the oral Candida load in patients with oral candidiasis by inhibiting mycelial growth and that EF-2001 is an effective treatment for oral candidiasis.
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Affiliation(s)
- T. Yamazaki
- Department of Pathology, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Kanagawa 230-8501, Japan
| | - R. Ushikoshi-Nakayama
- Department of Pathology, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Kanagawa 230-8501, Japan
| | - K. Shirone
- Shirone Dental Clinic, 276-1 Fushimi Shinmachi, Kanazawa-shi, Ishikawa Prefecture 921-8172, Japan
| | - M. Suzuki
- Teikyo University Institute of Medical Mycology, 359 Otsuka, Hachioji, Tokyo 192-0395, Japan
| | - S. Abe
- Teikyo University Institute of Medical Mycology, 359 Otsuka, Hachioji, Tokyo 192-0395, Japan
| | - N. Matsumoto
- Department of Pathology, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Kanagawa 230-8501, Japan
| | - H. Inoue
- Department of Pathology, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Kanagawa 230-8501, Japan
- Department of Pharmacotherapy, Nihon Pharmaceutical University, 10281 Komuro, Ina-machi, Kita-Adachi-gun, Saitama 362-0806, Japan
| | - I. Saito
- Department of Pathology, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Kanagawa 230-8501, Japan
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Okada K, Saito I, Katada C, Tsujino T. Influence of quality of sleep in the first trimester on blood pressure in the third trimester in primipara women. Blood Press 2019; 28:345-355. [PMID: 31266373 DOI: 10.1080/08037051.2019.1637246] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: The purpose of this study was to clarify the relationship between decreased sleep quality during the first trimester and a rise in blood pressure during an otherwise normal course of pregnancy in primipara women. Materials and methods: We recruited 128 pregnant women (primipara) who visited the obstetrics and gynecology clinic for medical examination, of which 89 were longitudinally investigated from the first to the third trimester after obtaining informed consent. A survey was conducted in the first, second, and third trimesters to evaluate sleep quality using the Japanese version of the Pittsburgh Sleep Quality Index (PSQI-J). Patients were assigned to either a good sleep quality group (PSQI-J ≤ 5) or a poor sleep quality group (PSQI-J ≥ 6). Blood pressure was measured using a home blood pressure measurement method. We analyzed the relationship between sleep quality in the first trimester and blood pressure during pregnancy. Results: The increase in morning systolic blood pressure from first to third trimester was larger in the poor sleep quality group than in the good sleep quality group (7.1 ± 7.0 vs. 3.0 ± 5.6 mmHg, p < .01). Sleep latency (r = 0.38, β = 0.43, p = .02) and sleep disturbances (r = 0.24, β = 0.33, p = .04) in the first trimester affected the increase in systolic blood pressure during pregnancy. Conclusions: Understanding sleep quality at the beginning of pregnancy can help predict a rise in systolic blood pressure in the third trimester. This emphasizes the importance of sleep education during pregnancy.
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Affiliation(s)
- Kimie Okada
- Graduate School of Health Sciences, Kobe University , Kobe , Japan.,Department of Nursing, School of Nursing, Hyogo University of Health Sciences , Kobe , Japan
| | - Izumi Saito
- Graduate School of Health Sciences, Kobe University , Kobe , Japan
| | - Chihiro Katada
- Department of Nursing, School of Nursing, Hyogo University of Health Sciences , Kobe , Japan
| | - Takeshi Tsujino
- Department of Pharmacy, School of Pharmacy, Hyogo University of Health Sciences , Kobe , Japan
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Takeda D, Hasegawa T, Saito I, Arimoto S, Akashi M, Komori T. A radiologic evaluation of the incidence and morphology of maxillary sinus septa in Japanese dentate maxillae. Oral Maxillofac Surg 2019; 23:233-237. [PMID: 31089896 DOI: 10.1007/s10006-019-00773-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 05/02/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Evaluation of the inner aspect of the maxillary sinus is important for the success of a sinus lift procedure. The most common surgical complication is perforation of the Schneiderian membrane, which is thought to occur because of the presence of maxillary sinus septa. Therefore, we retrospectively investigated the incidence and morphology of maxillary sinus septa using multiplanar reformatted computed tomographic (CT) images from dentate Japanese patients. METHODS A total of 276 patients and 552 maxillary sinus segments were evaluated. The maxillary sinus septa were divided into four locations: forefront, anterior, middle, and posterior. The heights of the septa were measured at three sites from the deepest point of the sinus floor: lateral, mid-point, and medial. RESULTS Sinus septa were identified in 191 of 552 (34.6%) maxillary sinus segments obtained from 111 of 276 (40.2%) patients. One unilateral septum was most commonly detected, and the sinus septa were most often located in the middle of the maxillary sinus. The average height of the identified septa was 8.69 ± 4.68 mm (mean ± standard deviation). CONCLUSION Multiplanar reformatted CT images can identify maxillary sinus septa in any plane. The height of maxillary sinus septa in the dentate maxillae was higher than detected in previous studies. Appropriate treatment planning using CT images should be considered to prevent surgical complications.
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Affiliation(s)
- Daisuke Takeda
- Departments of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - Takumi Hasegawa
- Departments of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Izumi Saito
- Departments of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Satomi Arimoto
- Departments of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Masaya Akashi
- Departments of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - Takahide Komori
- Departments of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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Muraki Y, Hasegawa T, Takeda D, Ueha T, Iwata E, Saito I, Amano R, Sakakibara A, Akashi M, Komori T. Induced Pluripotent Stem Cell-related Genes Correlate With Poor Prognoses of Oral Squamous Cell Carcinoma. Anticancer Res 2019; 39:1205-1216. [PMID: 30842151 DOI: 10.21873/anticanres.13231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/24/2019] [Accepted: 01/25/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM We recently investigated the contribution of the iPS-related genes SOX2, OCT4, and Nanog to de-differentiation by assaying for their mRNA levels. Given that mRNA expression does not always correlate with the protein levels, the aim of this study was to retrospectively determine the expression of these four iPS-related factors in human OSCC specimens by immunohistochemistry and examine their association with patient prognosis. MATERIALS AND METHODS iPS cell-related gene expression in 89 OSCC patients by tissue microarray, and its correlation with clinicopathological factors, differentiation, metastasis, and poor prognoses were investigated. RESULTS No evidence of statistically significant relationships was found between the expression of iPS cell-related genes and clinicopathological parameters. However, our data indicated that KLF4 expression was associated with survival, and poor tumor differentiation. In addition, high expression of KLF4 was an independent poor prognostic factor (p=0.004) for OSCC patients. CONCLUSION In preoperative biopsies, higher KLF4 and poor differentiation may be clinically effective predictors for the prognosis of oral cancer.
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Affiliation(s)
- Yumi Muraki
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takeshi Ueha
- Department of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Eiji Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Rika Amano
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Akiko Sakakibara
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takahide Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Kozawa T, Sugitani K, Oehler DZ, House CH, Saito I, Watanabe T, Gotoh T. Early Archean planktonic mode of life: Implications from fluid dynamics of lenticular microfossils. Geobiology 2019; 17:113-126. [PMID: 30378757 DOI: 10.1111/gbi.12319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 08/31/2018] [Accepted: 09/11/2018] [Indexed: 06/08/2023]
Abstract
Lenticular, and commonly flanged, microfossils in 3.0-3.4 Ga sedimentary deposits in Western Australia and South Africa are unusually large (20-80 μm across), robust, and widespread in space and time. To gain insight into the ecology of these organisms, we performed simulations of fluid dynamics of virtual cells mimicking lenticular forms of variable sizes, oblateness, flange presence, and flange thickness. Results demonstrate that (a) the flange reduces sedimentation velocity, (b) this flange function works more effectively in larger cells, and (c) modest oblateness lowers sedimentation rate. These observations support interpretations that the lenticular microbes were planktonic-a lifestyle that could have been advantageous in an early Earth harsh environment including violent volcanic activities, repeated asteroid impacts, and relatively high UV-radiation. Although the robustness of these organisms could have provided additional protection on the early Earth, this architecture may have impeded a planktonic lifestyle by increasing cell density. However, our data suggest that this disadvantage could have been compensated by enlargement of cell volume, which could have enhanced the ability of the flange to slow sedimentation rate, especially if coupled with vacuolation. The results of this simulation study may help to explain the unique morphology and unusually large size of these Archean microfossils.
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Affiliation(s)
- Tomoki Kozawa
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya, Japan
| | - Kenichiro Sugitani
- Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
| | | | - Christopher H House
- Department of Geosciences, The Pennsylvania University, University Park, Pennsylvania
| | - Izumi Saito
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya, Japan
| | - Takeshi Watanabe
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya, Japan
| | - Toshiyuki Gotoh
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya, Japan
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Oba T, Inaba Y, Saito I, Fujisawa T, Saito T. Risk factors for prolonged operative time in femoral neck fracture patients undergoing hemiarthroplasty through direct anterior approach. J Orthop Sci 2018; 23:977-981. [PMID: 30087014 DOI: 10.1016/j.jos.2018.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/02/2018] [Accepted: 07/08/2018] [Indexed: 01/20/2023]
Abstract
BACKGROUND The use of direct anterior approach (DAA) for hemiarthroplasty in femoral neck fracture patients has recently increased worldwide. However, no previous studies have elucidated or validated risk factors for prolonged operative time in hemiarthroplasty through DAA. Accurately predicting operative time would contribute to and the selection of the most appropriate surgical approach for each patient and the effective use of operating room. METHODS Data from 151 femoral neck fracture patients who underwent hemiarthroplasty through DAA were evaluated. A multiple linear regression model of the operative time of hemiarthroplasty was developed, including age, sex, body mass index (BMI), surgeons' DAA experience and approach depth (cm) on the axial computed tomography (CT) slice of the hip as independent factors. RESULTS Mean age at admission was 83.8 [±6.3 standard deviation (SD)] years and mean operative time was 93.1 (±21 SD) min. Operative time increased by 20 min for every 1 cm increase in approach depth [partial regression coefficient (B), 20.4; standardized partial regression coefficient (β), 0.68; p < 0.001] and increased 13 min when the DAA was performed by a surgeon with DAA experience of <20 cases (B, 13.1; β, 0.29; p < 0.001). The adjusted R2 of the model was 0.57. CONCLUSIONS We demonstrated that increased approach depth and surgeons' DAA experience (<20 cases) are novel risk factors for prolonged operative time in femoral neck fracture patients undergoing hemiarthroplasty through DAA. Surgeons should consider these factors when estimating the operative time of surgery and selecting the most appropriate and safe surgical approach for a patient undergoing hemiarthroplasty.
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Affiliation(s)
- Takayoshi Oba
- Department of Orthopaedic Surgery, Shin-Yurigaoka General Hospital, 255 Furusawatuko, Asao-ku, Kawasaki, Kanagawa, 215-0026, Japan.
| | - Yutaka Inaba
- Department of Orthopaedic Surgery, Yokohama City University School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan.
| | - Izumi Saito
- Department of Orthopaedic Surgery, Shin-Yurigaoka General Hospital, 255 Furusawatuko, Asao-ku, Kawasaki, Kanagawa, 215-0026, Japan.
| | - Takahiro Fujisawa
- Department of Orthopaedic Surgery, Shin-Yurigaoka General Hospital, 255 Furusawatuko, Asao-ku, Kawasaki, Kanagawa, 215-0026, Japan.
| | - Tomoyuki Saito
- Department of Orthopaedic Surgery, Yokohama City University School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan.
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Saito I, Hasegawa T, Ueha T, Takeda D, Iwata E, Arimoto S, Sakakibara A, Akashi M, Sakakibara S, Sakai Y, Terashi H, Komori T. Effect of local application of transcutaneous carbon dioxide on survival of random-pattern skin flaps. J Plast Reconstr Aesthet Surg 2018; 71:1644-1651. [PMID: 30031765 DOI: 10.1016/j.bjps.2018.06.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 05/11/2018] [Accepted: 06/16/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Skin flap procedures are widely used to reconstruct skin and soft tissue defects. Skin flap necrosis is a serious postoperative complication. Many researchers have introduced pharmacological agents to improve flap ischemia in experimental studies. However, outcomes of these studies remain controversial. We previously demonstrated that transcutaneous CO2 application improves hypoxia in fracture repair. In this study, we hypothesized that improving hypoxia by transcutaneous CO2 application can improve the blood flow in skin flaps and increase angiogenesis. We investigated whether transcutaneous CO2 application can increase the survival of random-pattern skin flaps. MATERIALS AND METHODS Six-week-old male Sprague-Dawley rats were divided into two equal groups: the control group (n = 6) and CO2 group (n = 6). A random-pattern skin flap was constructed in these rats. Topical CO2 was applied using a hydrogel every day for 5 days in the CO2 group. The flap survival area was measured on postoperative days 1, 3, and 5. The vessel density and expression of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), and hypoxia-inducible factor-1α (HIF-1α) were evaluated on postoperative day 5. RESULTS A statistically significant difference was found in the percentage of the flap survival area between the two groups on postoperative days 3 and 5 (p < 0.05). Furthermore, the expression of VEGF and bFGF was significantly higher and that of HIF-1α was significantly lower in the CO2 than in the control group (p < 0.05). CONCLUSIONS Transcutaneous CO2 application can improve the blood flow in skin flaps and increase angiogenesis, thus increasing the survival of random-pattern skin flaps.
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Affiliation(s)
- Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
| | - Takeshi Ueha
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan; NeoChemir Inc., Kobe, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Eiji Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Satomi Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Akiko Sakakibara
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Shunsuke Sakakibara
- Department of Plastic Reconstructive Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshitada Sakai
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroto Terashi
- Department of Plastic Reconstructive Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takahide Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
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Makino K, Takeichi O, Imai K, Inoue H, Hatori K, Himi K, Saito I, Ochiai K, Ogiso B. Porphyromonas endodontalis reactivates latent Epstein-Barr virus. Int Endod J 2018; 51:1410-1419. [PMID: 29858508 DOI: 10.1111/iej.12959] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 05/30/2018] [Indexed: 12/13/2022]
Abstract
AIM To determine whether Porphyromonas endodontalis can reactivate latent Epstein-Barr virus (EBV). METHODOLOGY The concentrations of short-chain fatty acids (SCFAs) in P. endodontalis culture supernatants were determined using high-performance liquid chromatography. A promoter region of BamHI fragment Z leftward open reading frame 1 (BZLF-1), which is a transcription factor that controls the EBV lytic cycle, was cloned into luciferase expression vectors. Then, the luciferase assay was performed using P. endodontalis culture supernatants. Histone acetylation using Daudi cells treated with P. endodontalis culture supernatants was examined using Western blotting. BZLF-1 mRNA and BamHI fragment Z EB replication activator (ZEBRA) protein were also detected quantitatively using real-time polymerase chain reaction (PCR) and Western blotting. Surgically removed periapical granulomas were examined to detect P. endodontalis, EBV DNA, and BZLF-1 mRNA expression using quantitative real-time PCR. Statistical analysis using Steel tests was performed. RESULTS The concentrations of n-butyric acid in P. endodontalis culture supernatants were significantly higher than those of other SCFAs (P = 0.0173). Using B-95-8-221 Luc cells treated with P. endodontalis culture supernatants, the luciferase assay demonstrated that P. endodontalis induced BZLF-1 expression. Hyperacetylation of histones was also observed with the culture supernatants. BZLF-1 mRNA and ZEBRA protein were expressed by Daudi cells in a dose-dependent manner after the treatment with P. endodontalis culture supernatants. P. endodontalis and BZLF-1 in periapical granulomas were also detected. The expression levels of BZLF-1 mRNA were similar to the numbers of P. endodontalis cells in each specimen. CONCLUSIONS n-butyric acid produced by P. endodontalis reactivated latent EBV.
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Affiliation(s)
- K Makino
- Department of Endodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - O Takeichi
- Department of Endodontics, Nihon University School of Dentistry, Tokyo, Japan.,Division of Advanced Dental Treatment, Dental Research Centre, Nihon University School of Dentistry, Tokyo, Japan
| | - K Imai
- Department of Microbiology, Nihon University School of Dentistry, Tokyo, Japan.,Division of Immunology and Pathobiology, Dental Research Centre, Nihon University School of Dentistry, Tokyo, Japan
| | - H Inoue
- Department of Pharmaceutical Sciences, Nihon Pharmaceutical University, Saitama, Japan
| | - K Hatori
- Department of Endodontics, Nihon University School of Dentistry, Tokyo, Japan.,Division of Advanced Dental Treatment, Dental Research Centre, Nihon University School of Dentistry, Tokyo, Japan
| | - K Himi
- Department of Endodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - I Saito
- Department of Pathology, Tsurumi University School of Dental Medicine, Kanagawa, Japan
| | - K Ochiai
- Department of Microbiology, Nihon University School of Dentistry, Tokyo, Japan.,Division of Immunology and Pathobiology, Dental Research Centre, Nihon University School of Dentistry, Tokyo, Japan
| | - B Ogiso
- Department of Endodontics, Nihon University School of Dentistry, Tokyo, Japan.,Division of Advanced Dental Treatment, Dental Research Centre, Nihon University School of Dentistry, Tokyo, Japan
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Iwata E, Hasegawa T, Ueha T, Takeda D, Saito I, Kawamoto T, Akisue T, Sakai Y, Sasaki R, Kuroda R, Komori T. Transcutaneous carbon dioxide enhances the antitumor effect of radiotherapy on oral squamous cell carcinoma. Oncol Rep 2018; 40:434-442. [PMID: 29767262 DOI: 10.3892/or.2018.6444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 04/12/2018] [Indexed: 11/06/2022] Open
Abstract
Radiotherapy (RT) is one of the main treatment modalities for oral squamous cell carcinoma (OSCC), however, radioresistance is a major impediment to its clinical success and poses as a concern that needs to be addressed. Tumor hypoxia is known to be significantly associated with radioresistance in various malignancies, hence, resolving the hypoxic state of a tumor may improve the antitumor effect of RT on OSCC. We have previously revealed that transcutaneous CO2 induced mitochondrial apoptosis and suppressed tumor growth in OSCC by resolving hypoxia. Considering the previous study, we hypothesized that transcutaneous CO2 may enhance the antitumor effect of RT on OSCC by improving intratumoral hypoxia, thereby overcoming radioresistance. In the present study, the combination of transcutaneous CO2 and RT significantly inhibited tumor growth compared with other treatments. This combination therapy also led to decreased expression of HIF-1α in parallel with increased expression of the cleaved forms of caspase-3-8-9 and PARP, which play essential roles in mitochondrial apoptosis. Additionally, the combination therapy increased the expression of ROS modulator 1 and subsequent mitochondrial ROS production, compared to RT alone. These results indicated that transcutaneous CO2 could potentially improve the antitumor effect of RT by decreasing the intratumoral hypoxia and increasing the mitochondrial apoptosis. Our findings indicated that CO2 therapy may be a novel adjuvant therapy in combination with RT for OSCC.
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Affiliation(s)
- Eiji Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Takeshi Ueha
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Teruya Kawamoto
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Toshihiro Akisue
- Division of Rehabilitation Medicine, Kobe University Graduate School of Health Sciences, Kobe 650-0017, Japan
| | - Yoshitada Sakai
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Ryohei Sasaki
- Department of Radiation Oncology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Takahide Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
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Saito I, Gotoh T, Watanabe T. Size distribution spectrum of noninertial particles in turbulence. Phys Rev E 2018; 97:053108. [PMID: 29906850 DOI: 10.1103/physreve.97.053108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Indexed: 06/08/2023]
Abstract
Collision-coalescence growth of noninertial particles in three-dimensional homogeneous isotropic turbulence is studied. Smoluchowski's coagulation equation describes the evolution of the size distribution of particles in this system. By applying a methodology based on turbulence theory, the equation is shown to have a steady-state solution, which corresponds to the Kolmogorov-type power-law spectrum. Direct numerical simulations of turbulence and Lagrangian particles are conducted. The result shows that the size distribution in a statistically steady state agrees accurately with the theoretical prediction.
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Affiliation(s)
- Izumi Saito
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Toshiyuki Gotoh
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Takeshi Watanabe
- Department of Physical Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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Hayashi M, Okamura K, Abe Y, Hozumi Y, Saito I, Suzuki T. 1251 Janus kinase inhibitor tofacitinib does not facilitate the repigmentation in mice model of rhododendrol-induced leukoderma. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Miyoshi N, Tanigawa T, Nishioka S, Maruyama K, Eguchi E, Tanaka K, Saito I, Yamazaki K, Miyake Y. Association of salivary lactate dehydrogenase level with systemic inflammation in a Japanese population. J Periodontal Res 2018; 53:487-494. [DOI: 10.1111/jre.12537] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2018] [Indexed: 12/01/2022]
Affiliation(s)
- N. Miyoshi
- Department of Epidemiology and Preventive Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - T. Tanigawa
- Department of Public Health; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - S. Nishioka
- Department of Diabetes and Molecular Genetics; Ehime University Graduate School of Medicine; Ehime Japan
- Ehime Dental Association; Ehime Japan
| | - K. Maruyama
- Department of Public Health; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - E. Eguchi
- Department of Public Health; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama Japan
| | - K. Tanaka
- Department of Epidemiology and Preventive Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - I. Saito
- Department of Basic Nursing and Health Science; Ehime University Graduate School of Medicine; Ehime Japan
| | - K. Yamazaki
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - Y. Miyake
- Department of Epidemiology and Preventive Medicine; Ehime University Graduate School of Medicine; Ehime Japan
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Affiliation(s)
- R. Ema
- Graduate School of Engineering and Science; Shibaura Institute of Technology; Saitama Japan
- Research Fellow of Japan Society for the Promotion of Science; Tokyo Japan
| | - I. Saito
- College of Systems Engineering and Science; Shibaura Institute of Technology; Saitama Japan
| | - R. Akagi
- Graduate School of Engineering and Science; Shibaura Institute of Technology; Saitama Japan
- College of Systems Engineering and Science; Shibaura Institute of Technology; Saitama Japan
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Kojima Y, Yanamoto S, Umeda M, Kawashita Y, Saito I, Hasegawa T, Komori T, Ueda N, Kirita T, Yamada SI, Kurita H, Senga Y, Shibuya Y, Iwai H. Relationship between dental status and development of osteoradionecrosis of the jaw: a multicenter retrospective study. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 124:139-145. [DOI: 10.1016/j.oooo.2017.04.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 02/02/2017] [Accepted: 04/19/2017] [Indexed: 10/19/2022]
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Tomooka K, Tanigawa T, Sakurai S, Maruyama K, Eguchi E, Nishioka S, Miyoshi N, Kakuto H, Shimizu G, Yamaoka D, Saito I. Scalloped tongue is associated with nocturnal intermittent hypoxia among community-dwelling Japanese: the Toon Health Study. J Oral Rehabil 2017; 44:602-609. [PMID: 28548303 DOI: 10.1111/joor.12526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2017] [Indexed: 11/29/2022]
Abstract
Scalloped tongue is considered as a possible clinical finding of obstructive sleep apnoea (OSA). There are few evidence of the association between scalloped tongue and OSA. To examine the association between scalloped tongue and nocturnal intermittent hypoxia (NIH), a surrogate marker of OSA, among a general Japanese population. Study participants were 398 men and 732 women aged 30-79 years who participated in the Toon Health Study from 2011 to 2014. Scalloped tongue was classified into three categories: none, mild and moderate-to-severe. Moderate-to-severe NIH was defined as the 3% oxygen desaturation index of ≥15 events/h during sleep for one night with pulse oximetry. The multivariable-adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for moderate-to-severe NIH were calculated according to scalloped tongue categories using a logistic regression model. There were 69 (6·1%) moderate-to-severe NIH cases in this population. The multivariable-adjusted ORs (95% CIs) of moderate-to-severe NIH were 1·59 (0·85-2·95) for mild and 2·39 (1·10-5·17) for the moderate-to-severe scalloped tongue group compared with the group without scalloped tongues. When stratified by overweight status (BMI <25 or ≥25 kg m-2 ), the respective ORs (95% CIs) were 2·83 (1·06-7·55) and 4·74 (1·28-17·49) among overweight individuals, and 0·94 (0·40-2·70) and 1·52 (0·57-4·05) among non-overweight individuals. Scalloped tongue was associated with higher prevalence of moderate-to-severe NIH among the general Japanese population and this association was more evident in overweight individuals.
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Affiliation(s)
- K Tomooka
- Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - T Tanigawa
- Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - S Sakurai
- Department of Clinical Laboratory Science, Faculty of Health Care, Tenri Health Care University, Tenri, Japan
| | - K Maruyama
- Department of Public Health, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - E Eguchi
- Department of Public Health, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - S Nishioka
- Department of Molecular and Genetic Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - N Miyoshi
- Department of Epidemiology and Preventive Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - H Kakuto
- Department of East Asian Traditional Medicine, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - G Shimizu
- Department of East Asian Traditional Medicine, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - D Yamaoka
- Department of East Asian Traditional Medicine, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - I Saito
- Department of Community Health Systems Nursing, Ehime University Graduate School of Medicine, Toon, Japan
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Saito I, Hasegawa T, Iwata E, Yonezawa N, Arimoto S, Takeda D, Sakakibara A, Akashi M, Minamikawa T, Komori T. Postoperative drainage in head and neck surgery for oral cancer. Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology 2017. [DOI: 10.1016/j.ajoms.2016.12.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Igami K, Ikeda A, Maruyama K, Tomooka K, Saito I, Tanigawa T. 0088 RELATIONSHIPS BETWEEN SLEEP DISORDERED BREATHING AND CENTRAL AORTIC PRESSURE IN A COMMUNITY BASED POPULATION: THE TOON HELATH STUDY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nishino E, Ikeda A, Maruyama K, Saito I, Tomooka K, Tanigawa T. 0089 NOCTURNAL INTERMITTENT HYPOXIA AND CAROTID-ARTERY ATHEROSCLEROSIS IN A GENERAL JAPANESE POPULATION: THE TOON HEALTH STUDY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Murakami A, Maruyama K, Tomooka K, Suzuki Y, Saito I, Tanigawa T. 1024 SLEEP DISORDERED BREATHING AND CHRONIC KIDNEY DISEASE AMONG MIDDLE-AGED AND ELDERLY JAPANESE POPULATION: TOON HEALTH STUDY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.1023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Saito A, Okada K, Saito I, Kinoshita K, Seto A, Takahashi Y, Shibata K, Sato H, Wakasa M. Functional status of the articularis genus muscle in individuals with knee osteoarthritis. J Musculoskelet Neuronal Interact 2016; 16:348-354. [PMID: 27973387 PMCID: PMC5259576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To clarify the functional status of the articularis genus muscle (AGM) in individuals with knee osteoarthritis (OA) and to analyze the muscle's relationship with knee OA. METHODS Fifty-two individuals with knee OA (mean age, 73.4 years), 50 elderly individuals without knee OA changes (mean age, 71.2 years) and 75 young individuals (mean age, 20.2 years) were observed the AGM using ultrasonography. The thickness of the AGM, the anteroposterior distance of the suprapatellar bursa, and moving distance of the muscle insertion were measured both at rest and during isometric contraction, and values during contraction were expressed as percentages of the values at rest (%Muscle-Increase, %Bursa-Increase). RESULTS Muscle thickness at rest, %Muscle-Increase, %Bursa-Increase, and moving distance of the muscle insertion were significantly lower and anteroposterior distance of the suprapatellar bursa was significantly higher in the OA group than in the controls (p<0.001, all). In the OA group, these values for the AGM were significantly correlated with knee range of motion, knee pain, and Kellgren and Lawrence grade. CONCLUSIONS Individuals with knee OA exhibited atrophic changes and dysfunctions of the AGM, and these were associated with symptoms. Atrophic changes and dysfunctions of the AGM may be specific changes associated with knee OA.
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Affiliation(s)
- A. Saito
- Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan
| | - K. Okada
- Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan
| | - I. Saito
- Department of Rehabilitation, Ugo Municipal Hospital, Ugo, Japan,Corresponding author: Akira Saito, Department of Physical Therapy, Akita University Graduate School of Health Sciences, 1-1-1 Hondo, Akita, 010-8543, Japan E-mail:
| | - K. Kinoshita
- Department of Rehabilitation, Sannoh Orthopedic Clinic, Akita, Japan
| | - A. Seto
- Department of Rehabilitation, Sannoh Orthopedic Clinic, Akita, Japan
| | - Y. Takahashi
- Department of Rehabilitation, Akita University Hospital, Akita, Japan
| | - K. Shibata
- Department of Rehabilitation, Akita City Hospital, Akita, Japan
| | - H. Sato
- Department of Rehabilitation, Akita Kousei Medical Center, Akita, Japan
| | - M. Wakasa
- Department of Physical Therapy, Akita University Graduate School of Health Sciences, Akita, Japan
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Hasegawa T, Kawabata S, Takeda D, Iwata E, Saito I, Arimoto S, Kimoto A, Akashi M, Suzuki H, Komori T. Survival of Brånemark System Mk III implants and analysis of risk factors associated with implant failure. Int J Oral Maxillofac Surg 2016; 46:267-273. [PMID: 27856151 DOI: 10.1016/j.ijom.2016.10.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/29/2016] [Accepted: 10/26/2016] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to retrospectively investigate the outcomes of Brånemark System Mk III TiUnite/Groovy implants placed in patients at Kobe University Hospital. Various risk factors for implant failure, including mechanical coupling, were investigated by univariate and multivariate analysis. The predictive variables investigated included age, sex, smoking habit, general health, history of radiation therapy, application of a dentomaxillary prosthesis, type of prosthesis, use of alveolar bone augmentation, site of implant insertion, mechanical coupling between implants, and the length and diameter of the implants. Of the 907 implants investigated, only 23 were unsuccessful; the overall survival rate was 96.7%. Increased age, radiation therapy, application of a removable prosthesis or dentomaxillary prosthesis, lack of mechanical coupling between implants, and shorter implants (≤8.5mm) were significant risk factors for implant failure according to univariate analysis (P<0.05). Multivariate analysis identified a significant association (P<0.05) between dental implant failure and a lack of mechanical coupling between implants (odds ratio 6.88) and shorter implants (≤8.5mm) (odds ratio 3.43). The findings of this study demonstrated multivariate relationships between various risk factors and dental implant failure.
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Affiliation(s)
- T Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - S Kawabata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - D Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - E Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - I Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - A Kimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - M Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Suzuki
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Hasegawa T, Shibuya Y, Takeda D, Iwata E, Saito I, Kakei Y, Sakakibara A, Akashi M, Minamikawa T, Komori T. Prognosis of oral squamous cell carcinoma patients with level IV/V metastasis: An observational study. J Craniomaxillofac Surg 2016; 45:145-149. [PMID: 27908710 DOI: 10.1016/j.jcms.2016.10.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/02/2016] [Accepted: 10/20/2016] [Indexed: 11/17/2022] Open
Abstract
PURPOSE The objectives of this study were to retrospectively describe the characteristics and outcomes of patients with oral squamous cell carcinoma (OSCC) with level IV/V metastases, and to evaluate the multivariate relationships among potential risk factors for metastasis and prognosis. MATERIALS AND METHODS We evaluated 291 patients (178 men and 113 women; mean age, 65.9 ± 13.5 years). Clinicopathological data, time of development of level IV/V metastases, and clinical course were investigated. RESULTS Twenty-three patients (7.9%) developed level IV/V metastases. The 3-year overall survival rates when level IV/V metastasis first developed were 27.3% upon initial treatment, 57.1% when metachronous neck metastasis developed, and 40.0% when the tumor recurred. Oral tongue tumor subsite, high N staging, neck dissection when metachronous neck metastasis developed, as well as recurrence were independent risk factors for level IV/V metastasis. CONCLUSION We demonstrate here the multivariate relationships among the risk factors indicated above for level IV/V metastasis and their prognostic significance for patients with OSCC. Oral tongue tumors, high N staging, and neck dissection upon the occurrence of metachronous neck metastasis or recurrence were risk factors for level IV/V metastasis and positive extracapsular spread, presence of multiple lymph metastases, and moderate or poor differentiation were poor prognostic factors.
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Affiliation(s)
- Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan.
| | - Yasuyuki Shibuya
- Department of Oral Maxillofacial Surgery (Chief: Prof. Y. Shibuya), Nagoya City University Graduate School of Medical Science, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
| | - Eiji Iwata
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
| | - Izumi Saito
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
| | - Akiko Sakakibara
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
| | - Tsutomu Minamikawa
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
| | - Takahide Komori
- Department of Oral and Maxillofacial Surgery (Chief: Prof. T. Komori), Kobe University Graduate School of Medicine, Japan
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Saito D, Mikami T, Oda Y, Hasebe D, Nishiyama H, Saito I, Kobayashi T. Relationships among maxillofacial morphologies, bone properties, and bone metabolic markers in patients with jaw deformities. Int J Oral Maxillofac Surg 2016; 45:985-91. [DOI: 10.1016/j.ijom.2016.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 10/10/2015] [Accepted: 02/09/2016] [Indexed: 10/22/2022]
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Abstract
The vasodilation mode and degree of the invasion caused by balloon angioplasty were experimentally examined. Assessment by light microscopy and scanning electron microscopy demonstrated that the invasion to the implanted arterial wall, taken from a patient who died from vasospasm, was minimized by the use of the balloon under the condition at 1 atm, 10 times for 10 seconds. Furthermore, we applied angioplasty to eight patients who developed severe vasospasm after subarachnoid haemorrhage, and five showed improvement in neurophysiological (transcranial Doppler sonography), neuroradiological, and clinical examinations. In addition, blood vessels obtained from one patient who died 10 days after angioplasty, demonstrated similar findings to those of the experimental studies. It can be said that angioplasty will be one of the effective therapeutic methods to manage vasospasm when it is applied under the conditions mentioned above.
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Affiliation(s)
- Y Konishi
- Department of Neurosurgery, Kyorin University School of Medicine, Tokyo, Japan
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Sakaue K, Fukui T, Sasakura C, Hori K, Ono T, Saito I. Tongue pressure production during swallowing in patients with mandibular prognathism. J Oral Rehabil 2016; 43:348-55. [PMID: 26751817 DOI: 10.1111/joor.12379] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2015] [Indexed: 12/01/2022]
Abstract
UNLABELLED Abnormalities of swallowing in patients with mandibular prognathism have not been evaluated quantitatively. The aim of this study was to compare tongue pressure production for bolus transfer between volunteers with normal occlusion and patients with mandibular prognathism. The control group had 10 female volunteers with normal occlusion, and the patient group had 10 women with mandibular prognathism. Tongue pressure was measured by a palatal sensor sheet at five sites on swallowing 4 mL of a tasteless and odourless jelly. RESULTS The tongue pressure waveform differed between the control and patient groups. The incidence of a double-peak tongue pressure waveform was more frequent in the patient group. In both groups, the exertion of tongue pressure began at the anterior point of the sensor sheet, followed by the peripheral parts. Although the order of expression of tongue pressure was the same for the two groups, maximum tongue pressure at all parts of the sensor sheet was lower in the patient group than in the control group. Furthermore, swallowing time was longer in the patient group than in the control group at the peripheral parts of the palate. These results clearly show the difference in tongue pressure production during swallowing between patients with mandibular prognathism and volunteers with normal occlusion. The current findings suggest that maxillofacial morphology may affect tongue movement during swallowing.
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Affiliation(s)
- K Sakaue
- Divisions of Orthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Fukui
- Divisions of Orthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - C Sasakura
- Divisions of Orthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - K Hori
- Divisions of Comprehensive Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Ono
- Divisions of Comprehensive Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - I Saito
- Divisions of Orthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Eguchi E, Saito I, Maruyama K, Sakurai S, Tanigawa T. Is the Association between Sleep Disordered Breathing and Night and Morning Blood Pressure Modified by Sleep Quality?: Toon Health Study. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv097.278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Saito I, Maruyama K, Nishida W, Eguchi E, Kato T, Hitsumoto S, Kawamura R, Takata Y, Onuma H, Osawa H, Tanigawa T. Heart Rate Variability, Insulin Resistance and Insulin Sensitivity in Japanese Adults: The Toon Health Study. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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