1
|
Nishikubo-Tanaka K, Asayama R, Kochi K, Okada M, Tanaka K, Yamada H, Hato N. Oral Intake Difficulty and Aspiration Pneumonia Assessment Using High-Resolution Manometry. Laryngoscope 2024; 134:2127-2135. [PMID: 37916796 DOI: 10.1002/lary.31155] [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: 05/06/2023] [Revised: 08/17/2023] [Accepted: 10/17/2023] [Indexed: 11/03/2023]
Abstract
OBJECTIVE The sequential generation of swallowing pressure (SP) from the nasopharynx to the proximal esophagus is important for the bolus to pass from the oral cavity to the esophagus. The purpose of this study was to investigate the correlation of the SP sequence mode on high-resolution manometry (HRM) with oral intake difficulty and aspiration pneumonia. METHODS Consecutive patients with dysphagia who were admitted to our dysphagia clinic between November 2016 and November 2020 were enrolled in this cross-sectional study. We classified the HRM pressure topography data according to the SP sequence mode into type A, normal; B, partially decreased; C, totally decreased; and D, sequence disappeared, and according to the upper esophageal sphincter (UES) during pharyngeal swallowing into type 1, flattening and 2, non-flattening. Clinical dysphagia severity was determined based on oral intake difficulty and aspiration pneumonia. RESULTS In total, 202 patients with dysphagia (mean [standard deviation] age, 68.3 [14.5] years; 140 [69.8%] male) were enrolled. Type C (odds ratio [OR], 10.48; 95% confidence interval [CI], 2.89-51.45), type D (OR, 19.90; 95% CI, 4.18-122.35), and type 2 (OR, 6.36; 95% CI, 2.88-14.57) were significantly related to oral intake difficulty. Type C (OR, 3.23; 95% CI, 1.08-11.12) and type 2 (OR, 4.18; 95% CI, 1.95-9.15) were significantly associated with aspiration pneumonia. CONCLUSION The failure of sequential generation of SP was associated with higher risk of oral intake difficulty and aspiration pneumonia. These assessments are useful in understanding the pathophysiology and severity of dysphagia and in selecting safety nutritional management methods. LEVEL OF EVIDENCE 4 Laryngoscope, 134:2127-2135, 2024.
Collapse
Affiliation(s)
- Kaori Nishikubo-Tanaka
- Department of Otolaryngology-Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Rie Asayama
- Department of Otolaryngology-Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Kazutaka Kochi
- Department of Otolaryngology-Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Masahiro Okada
- Department of Otolaryngology-Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Keiko Tanaka
- Department of Epidemiology and Preventive Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Hiroyuki Yamada
- Department of Otolaryngology-Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Naohito Hato
- Department of Otolaryngology-Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| |
Collapse
|
2
|
Nutan B, Okada M, Matsumoto T. Lipids and Minerals, Interplay in Biomineralization: Nature's Alchemy. Tissue Eng Part B Rev 2024. [PMID: 38386501 DOI: 10.1089/ten.teb.2023.0249] [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] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
The main focus of this article is the role of lipids in biomineralization. Much of the discussion on biomineralization focuses on proteins in these decades. Indeed, collagen and acidic noncollagenous proteins effectively serve as templates for mineralization. However, other macromolecules such as lipids and polysaccharides have received less attention despite their abundance at mineralization sites. The matrix vesicle (MV) theory is widely accepted as the induction of early mineralization. Although ion concentration within the vesicles has been discussed in the initial mineralization in this theory, the role of phospholipids that constitute the vesicle membrane has not been discussed much. Comprehensive considerations, including pathological mineralization, exist regardless of the localization of MVs, the involvement of bacteria in dental calculus formation, and biomineralization caused by marine organisms such as corals, suggesting that initial mineralization found in these biological conditions might be a common reaction relating to lipids. In contrast, despite the abundance of lipids, mineralization occurs only in the limited tissue within our body. In other words, gathering knowledge and creating a path to understanding about lipid-based mineralization is extremely important in proposing new bone disease treatment methods. This article describes how lipids influence nucleation, mineralization, and expansion during hard tissue formation.
Collapse
Affiliation(s)
- Bhingaradiya Nutan
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masahiro Okada
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takuya Matsumoto
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
3
|
Morikawa T, Nemoto D, Kurokawa T, Yamashina T, Hayashi Y, Kitamura M, Okada M, Takezawa T, Nakajima Y, Kowazaki Y, Fukuda H, Nomura T, Lazaridis N, Fukushima N, Sunada K, Yamamoto H. Multicenter prospective randomized controlled clinical trial comparing the pocket-creation method with and without single-clip traction of colonic endoscopic submucosal dissection. Endoscopy 2024. [PMID: 38408594 DOI: 10.1055/a-2276-0546] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
BACKGROUND The pocket-creation method (PCM) was developed to overcome the technical difficulties of endoscopic submucosal dissection (ESD), although opening the pocket remains challenging. We developed a novel technique of PCM with single-clip traction (PCM-CT), which uses a reopenable clip as a traction device to maintain stability during the procedure. No prospective study has compared the efficacy of PCM-CT and PCM. This study aimed to investigate the effectiveness of PCM-CT vs. PCM in a randomized controlled trial. METHODS This randomized controlled clinical trial was conducted at four Japanese institutions. Patients with superficial colorectal neoplastic lesions were included following Japanese guidelines for colorectal cancer. Seven moderately experienced endoscopists performed the ESD procedures using either PCM-CT or PCM. RESULTS 100 patients were enrolled in the study. Compared with PCM, PCM-CT achieved significantly faster mean (SD) dissection speed (21.4 [10.8] vs. 27.0 [14.5] mm2/min [95%CI 0.5 to 10.7], P = 0.03), and reduced the mean procedure time (81.8 [57.9] vs. 64.8 [47.6] minutes [95%CI -38.2 to 4.3], P = 0.12) and pocket-opening time (37.8 [33.0] vs. 30.0 [28.9] minutes [95%CI -20.2 to 4.6], P = 0.22). En bloc and R0 resection rates were not significantly different between the two groups (100% vs. 100%, P >0.99; 100% vs. 96%, P = 0.50, respectively). No significant differences were observed in adverse events between the two groups. CONCLUSION ESD facilitated by the novel PCM-CT method appeared to be significantly faster than PCM. Both methods achieved high R0 resection rates.
Collapse
Affiliation(s)
- Takaaki Morikawa
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
- Department of Gastroenterology, Jyoban Hospital of Tokiwa Foundation, Iwaki, Japan
| | - Daiki Nemoto
- Department of Coloproctology, Fukushima Medical University Aizu Medical Center, Fukushima, Japan
- Department of Gastroenterology, Takeda General Hospital, Fukushima, Japan
| | - Tomohiro Kurokawa
- Department of Gastroenterology, Jyoban Hospital of Tokiwa Foundation, Iwaki, Japan
| | - Takeshi Yamashina
- Division of Gastroenterology and Hepatology,, Kansai Medical University Medical Center, Moriguchi, Japan
| | - Yoshikazu Hayashi
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Masafumi Kitamura
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Masahiro Okada
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Takahito Takezawa
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Yuki Nakajima
- Department of Coloproctology, Fukushima Medical University Aizu Medical Center, Fukushima, Japan
| | - Yuka Kowazaki
- Department of Gastroenterology, Jyoban Hospital of Tokiwa Foundation, Iwaki, Japan
| | - Hisashi Fukuda
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
- Department of Gastroenterology, Jyoban Hospital of Tokiwa Foundation, Iwaki, Japan
| | - Tatsuma Nomura
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
- Department of Gastroenterology, Mie Prefectural Shima Hospital, Shima, Japan
| | - Nikolaos Lazaridis
- Royal Free Unit for Endoscopy, The Royal Free Hospital and University College London (UCL) Institute for Liver and Digestive Health, London, UK
| | | | - Keijiro Sunada
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Hironori Yamamoto
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| |
Collapse
|
4
|
Okada M, Yoshida N, Kashida H, Hayashi Y, Shinozaki S, Yoshimoto S, Fujinuma T, Sakamoto H, Sunada K, Tomita Y, Dohi O, Inoue K, Hirose R, Itoh Y, Komeda Y, Sekai I, Okai N, Lefor AK, Yamamoto H. Comparison of blue laser imaging and light-emitting diode-blue light imaging for the characterization of colorectal polyps using the Japan narrow-band imaging expert team classification: The LASEREO and ELUXEO COLonoscopic study. DEN Open 2024; 4:e245. [PMID: 37214382 PMCID: PMC10194417 DOI: 10.1002/deo2.245] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/12/2023] [Accepted: 05/02/2023] [Indexed: 05/24/2023]
Abstract
Objectives Although the laser light is optically ideal for producing narrow-band light, it has not been used in some areas of the world. Endoscopic light sources using light-emitting diodes (LEDs) are used worldwide. The purpose of this study was to compare blue laser imaging (laser-BLI) and LED-blue light imaging (LED-BLI) for the characterization of colorectal polyps using the Japan narrow band imaging expert team (JNET) classification. Methods Colorectal lesions were prospectively examined using magnifying narrow-band light generated by a laser (laser-BLI) or LEDs (LED-BLI). Twelve endoscopists (six non-experts and six experts from three institutions) evaluated each still-magnified image of lesions using the JNET classification. Results Seven hundred and fifty-six images from 63 lesions were reviewed. The mean polyp size was 24.5 ± 13.4 mm. Histopathology included 13 serrated lesions and 50 neoplasms. The rate of agreement between laser-BLI and LED-BLI using the JNET classification was 92.5% (699/756). The weighted κ-statistic was 0.99. The percentages of "almost similar" comparing scores of surface patterns, vessel patterns, and brightness among all endoscopists were 95.4%, 95.9%, and 95.0%, respectively. Conclusions This multicenter study demonstrates that the rate of agreement between laser-BLI and LED-BLI using the JNET Classification is very high. The surface patterns, vessel patterns, and brightness are almost similar.
Collapse
Affiliation(s)
- Masahiro Okada
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| | - Naohisa Yoshida
- Department of Molecular Gastroenterology and HepatologyKyoto Prefectural University of Medicine, Graduate School of Medical ScienceKyotoJapan
| | - Hiroshi Kashida
- Department of Gastroenterology and HepatologyKindai UniversityOsakaJapan
| | - Yoshikazu Hayashi
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| | - Satoshi Shinozaki
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
- Shinozaki Medical ClinicTochigiJapan
| | - Shiori Yoshimoto
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| | - Toshihiro Fujinuma
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| | - Hirotsugu Sakamoto
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| | - Keijiro Sunada
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| | - Yuri Tomita
- Department of Molecular Gastroenterology and HepatologyKyoto Prefectural University of Medicine, Graduate School of Medical ScienceKyotoJapan
| | - Osamu Dohi
- Department of Molecular Gastroenterology and HepatologyKyoto Prefectural University of Medicine, Graduate School of Medical ScienceKyotoJapan
| | - Ken Inoue
- Department of Molecular Gastroenterology and HepatologyKyoto Prefectural University of Medicine, Graduate School of Medical ScienceKyotoJapan
| | - Ryohei Hirose
- Department of Molecular Gastroenterology and HepatologyKyoto Prefectural University of Medicine, Graduate School of Medical ScienceKyotoJapan
| | - Yoshito Itoh
- Department of Molecular Gastroenterology and HepatologyKyoto Prefectural University of Medicine, Graduate School of Medical ScienceKyotoJapan
| | - Yoriaki Komeda
- Department of Gastroenterology and HepatologyKindai UniversityOsakaJapan
| | - Ikue Sekai
- Department of Gastroenterology and HepatologyKindai UniversityOsakaJapan
| | - Natsuki Okai
- Department of Gastroenterology and HepatologyKindai UniversityOsakaJapan
| | - Alan Kawarai Lefor
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| | - Hironori Yamamoto
- Department of Medicine, Division of GastroenterologyJichi Medical UniversityTochigiJapan
| |
Collapse
|
5
|
Nakazawa Y, Okada M, Hyodo T, Tago K, Shibutani K, Mizuno M, Yoshikawa H, Abe H, Higaki T, Okamura Y, Takayama T. Comparison between CT volumetry, technetium 99m galactosyl-serum-albumin scintigraphy, and gadoxetic-acid-enhanced MRI to estimate the liver fibrosis stage in preoperative patients. Eur Radiol 2024; 34:2212-2222. [PMID: 37673964 DOI: 10.1007/s00330-023-10219-9] [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: 10/19/2022] [Revised: 06/24/2023] [Accepted: 07/16/2023] [Indexed: 09/08/2023]
Abstract
OBJECTIVES To compare the efficacy of computed tomography volumetry (CTV), technetium99m galactosyl-serum-albumin (99mTc-GSA) scintigraphy, and gadolinium-ethoxybenzyl-diethylenetriamine-pentaacetic-acid-enhanced MRI (EOB-MRI) in estimating the liver fibrosis (LF) stage in patients undergoing liver resection. METHODS This retrospective study included 91 consecutive patients who had undergone preoperative dynamic CT and 99mTc-GSA scintigraphy. EOB-MRI was performed in 76 patients. CTV was used to measure the total liver volume (TLV), spleen volume (SV), normalised to the body surface area (BSA), and liver-to-spleen volume ratio (TLV/SV). 99mTc-GSA scintigraphy provided LHL15, HH15, and GSA indices. The liver-to-spleen ratio (LSR) was calculated in the hepatobiliary phase of EOB-MRI. Hyaluronic acid and type 4 collagen levels were measured in 65 patients. Logistic regression and receiver operating characteristic (ROC) analyses were performed to identify useful parameters for estimating the LF stage and laboratory data. RESULTS According to the multivariable logistic regression analysis, SV/BSA (odds ratio [OR], 1.01; 95% confidence interval [CI], 1.003-1.02; p = 0.011), LSR (OR, 0.06; 95%CI, 0.004-0.70; p = 0.026), and hyaluronic acid (OR, 1.01; 95%CI, 1.001-1.02; p = 0.024) were independent variables for severe LF (F3-4). Combined SV/BSA, LSR, and hyaluronic acid correctly estimated severe LF, with an AUC of 0.91, which was significantly larger than the AUCs of the GSA index (AUC = 0.84), SV/BSA (AUC = 0.83), or LSR (AUC = 0.75) alone. CONCLUSIONS Combined CTV, EOB-MRI, and hyaluronic acid analyses improved the estimation accuracy of severe LF compared to CTV, EOB-MRI, or 99mTc-GSA scintigraphy individually. CLINICAL RELEVANCE STATEMENT The combined analysis of spleen volume on CT volumetry, liver-to-spleen ratio on gadolinium-ethoxybenzyl-diethylenetriamine-pentaacetic-acid-enhanced MRI, and hyaluronic acid can identify severe liver fibrosis associated with a high risk of liver failure after hepatectomy and recurrence in patients with hepatocellular carcinoma. KEY POINTS • Spleen volume of CT volumetry normalised to the body surface area, liver-to-spleen ratio of EOB-MRI, and hyaluronic acid were independent variables for liver fibrosis. • CT volumetry and EOB-MRI enable the detection of severe liver fibrosis, which may correlate with post-hepatectomy liver failure and complications. • Combined CT volumetry, gadolinium-ethoxybenzyl-diethylenetriamine-pentaacetic-acid-enhanced MRI (EOB-MRI), and hyaluronic acid analyses improved the estimation of severe liver fibrosis compared to technetium99m galactosyl-serum-albumin scintigraphy.
Collapse
Affiliation(s)
- Yujiro Nakazawa
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan.
| | - Tomoko Hyodo
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Kenichiro Tago
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Kazu Shibutani
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Mariko Mizuno
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Hiroki Yoshikawa
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Hayato Abe
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Tokio Higaki
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Yukiyasu Okamura
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Tadatoshi Takayama
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| |
Collapse
|
6
|
Asayama R, Tanaka-Nishikubo K, Okada M, Mukai N, Annen S, Matsumoto H, Takeba J, Sato N, Hato N. Dysphagia in patients with severe COVID-19: a retrospective study. Sci Rep 2024; 14:6829. [PMID: 38514734 PMCID: PMC10957916 DOI: 10.1038/s41598-024-57508-x] [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: 12/11/2023] [Accepted: 03/19/2024] [Indexed: 03/23/2024] Open
Abstract
To investigate dysphagia after extubation in patients with severe coronavirus disease 2019 (COVID-19). We retrospectively examined patients with severe COVID-19 treated in our hospital between August 2021 and March 2022. Feeding outcomes were categorized into two groups-(1) total oral intake, and (2) difficulty in oral intake. To assess the feeding outcome, we used modified water-swallowing test (MWST) for all patients. However, in cases where aspiration or recurrent laryngeal nerve palsy was suspected, we conducted the fiberoptic endoscopic evaluation of swallowing after MWST. Patient data were collected from medical records. Forty-six patients with severe COVID-19 were included. Among the 46 patients, 14 (30.4%) experienced difficulties with oral intake. Older age, longer length of hospitalization, duration of mechanical ventilation, tracheostomy, diabetes, and higher serum levels of C-reactive protein (CRP) and procalcitonin (PCT) at the time of intubation were associated with difficulty in oral intake. The rate of difficulty with oral intake in patients with severe COVID-19 was 30.4%, which is not as high as reported in previous studies. Older age, longer duration of mechanical ventilation, tracheostomy, diabetes, and higher levels of CRP and PCT were associated with the prevalence of oral intake difficulty, suggesting that early attention should be paid to high-risk patients who have preexisting deterioration of swallowing function due to aging and comorbidities, or who have prolonged intubation or tracheostomy to prevent aspiration pneumonia.
Collapse
Affiliation(s)
- Rie Asayama
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan.
| | - Kaori Tanaka-Nishikubo
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Masahiro Okada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Naoki Mukai
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Suguru Annen
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Hironori Matsumoto
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Jun Takeba
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Norio Sato
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Naohito Hato
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| |
Collapse
|
7
|
Aoyagi H, Okada M, Yanagimoto H, Matsumoto T. Investigation on bacterial capture and antibacterial properties of acid-treated Ti surface. Dent Mater 2024; 40:318-326. [PMID: 38042700 DOI: 10.1016/j.dental.2023.11.018] [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: 05/13/2023] [Revised: 11/16/2023] [Accepted: 11/23/2023] [Indexed: 12/04/2023]
Abstract
OBJECTIVES Utilizing Ti and Ti alloys as dental materials established a huge spurt in the field of dentistry. Since implantation is an invasive procedure that involves tissue penetration, infection control is mandatory for increasing the success rate of the implant treatment. In this study, we aimed to assess the impact of the surface physicochemical properties of acid-treated Ti on microorganisms specifically bacteria. METHODS After investigating the surface morphology and characteristics of acid-treated and untreated Ti sheets, we evaluated their potential to capture Escherichia coli (E. coli.) as well as the latter's survival on the surface of both types of sheets. Finally, we assessed the efficiency of the antibacterial properties exhibited by Ti against the oral microflora. RESULTS SEM images revealed surface roughening of the acid-treated Ti represented by significantly irregular shape. Moreover, the acid-treated Ti exhibited remarkable hydrophobicity. A quantitative evaluation confirmed that acid-treated Ti has higher bacterial capture and antibacterial properties than untreated Ti. Further experiments showed similar effects of both types of Ti not only on E. coli but also on oral microflora. SIGNIFICANCE Results suggest that acid treatment of Ti surface is a potent technique for enhancing the antibacterial properties of Ti-derived materials.
Collapse
Affiliation(s)
- Haruyuki Aoyagi
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Masahiro Okada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Hiroaki Yanagimoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takuya Matsumoto
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan.
| |
Collapse
|
8
|
Mizuno M, Tago K, Okada M, Nakazawa Y, Arakane T, Yoshikawa H, Abe H, Matsumoto N, Higaki T, Okamura Y, Takayama T. Extracellular volume by dual-energy CT, hepatic reserve capacity scoring, CT volumetry, and transient elastography for estimating liver fibrosis. Sci Rep 2023; 13:22038. [PMID: 38086990 PMCID: PMC10716370 DOI: 10.1038/s41598-023-49362-0] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 12/07/2023] [Indexed: 12/18/2023] Open
Abstract
Our purpose was to compare the efficacy of liver and splenic volumetry (LV and SV), extracellular volume (ECV) on dual-layer spectral-detector CT scoring systems for estimating liver fibrosis (LF) in 45 patients with pathologically staged LF. ECV measured on CT value (HU-ECV), iodine density (ID-ECV), atomic number (Zeff-ECV), and electron density (ED-ECV), LV or SV/body surface area (BSA), albumin bilirubin grade (ALBI), model for end-stage liver disease (MELD) score, aspartate aminotransferase platelet ratio index (APRI), and fibrosis index based on the four factors (FIB-4) were recorded. Transient elastography was measured in 22 patients, and compared to ECV. No correlation was found between transient elastography and all ECVs. Area under the curve (AUC) for estimating F4 on transient elastography was 0.885 (95% CI 0.745-1.000). ALBI was weakly associated with LF (p = 0.451), while MELD (p < 0.001), APRI (p = 0.010), and FIB-4 (p = 0.010) were significantly associated with LF. SV/BSA had a higher AUC than MELD, APRI, and FIB-4 for estimating F4 (AUC = 0.815, 95% CI 0.63-0.999), but MELD (AUC = 0.799, 95% CI 0.634-0.965), APRI (AUC = 0.722, 95% CI 0.561-0.883), and FIB-4 (AUC = 0.741, 95% CI 0.582-0.899) had higher AUCs than ALBI. SV/BSA significantly contributed to differentiation for estimating F4; odds ratio (OR) was 1.304-1.353 (Reader 1-2; R1-R2), whereas MELD significantly contributed to the differentiation between F0-2 and F3-4; OR was 1.528-1.509 (R1-R2). AUC for SV/BSA and MELD combined was 0.877 (95% CI 0.748-1.000). In conclusion, SV/BSA allows for a higher estimation of liver cirrhosis (F4). MELD is more suitable for assessing severe LF (≥ F3-4). The combination of SV/BSA and MELD had a higher AUC than SV/BSA alone for liver cirrhosis (F4).
Collapse
Affiliation(s)
- Mariko Mizuno
- Departments of Radiology, Nihon University School of Medicine, 30-1, Oyaguchikami-machi, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Kenichiro Tago
- Departments of Radiology, Nihon University School of Medicine, 30-1, Oyaguchikami-machi, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Masahiro Okada
- Departments of Radiology, Nihon University School of Medicine, 30-1, Oyaguchikami-machi, Itabashi-ku, Tokyo, 173-8610, Japan.
| | - Yujiro Nakazawa
- Departments of Radiology, Nihon University School of Medicine, 30-1, Oyaguchikami-machi, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Takayuki Arakane
- Departments of Radiology, Nihon University School of Medicine, 30-1, Oyaguchikami-machi, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Hiroki Yoshikawa
- Departments of Radiology, Nihon University School of Medicine, 30-1, Oyaguchikami-machi, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Hayato Abe
- Departments of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Naoki Matsumoto
- Departments of Gastroenterology and Hepatology, Nihon University School of Medicine, Tokyo, Japan
| | - Tokio Higaki
- Departments of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Yukiyasu Okamura
- Departments of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Tadatoshi Takayama
- Departments of Digestive Surgery, Nihon University School of Medicine, Tokyo, Japan
| |
Collapse
|
9
|
Hashimoto K, Hayashi Y, Morikawa T, Okada M, Takezawa T, Kihara A, Yamamoto H. Complete resection of a rectal post-endoscopic-resection residual tumor including four endoclips using underwater endoscopic mucosal resection. Endoscopy 2023; 55:E1077-E1078. [PMID: 37769790 PMCID: PMC10539077 DOI: 10.1055/a-2155-6217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/02/2023]
Affiliation(s)
- Kosei Hashimoto
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Yoshikazu Hayashi
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Takaaki Morikawa
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Masahiro Okada
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Takahito Takezawa
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Atsushi Kihara
- Department of Pathology, Jichi, Medical University, Shimotsuke, Japan
| | - Hironori Yamamoto
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| |
Collapse
|
10
|
Kawachi R, Nakatani Y, Furuya M, Nakamura N, Kondo Y, Nagashima Y, Nakayama T, Okada M, Sakurai H, Masuda S. Pulmonary interstitial glycogenosis in Birt-Hogg-Dubé syndrome-associated lung cysts: A new insight into the pathogenesis? Pathol Int 2023; 73:601-608. [PMID: 37818800 DOI: 10.1111/pin.13383] [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: 05/09/2023] [Accepted: 09/17/2023] [Indexed: 10/13/2023]
Abstract
Multiple lung cysts are one of the major features of Birt-Hogg-Dubé syndrome (BHD), but little is known about their nature and pathogenesis. We report a case of a woman diagnosed with BHD lung cysts who exhibited pulmonary interstitial glycogenosis (PIG), a mesenchymal abnormality hitherto undescribed in this disease, in specimens resected at 14 and 29 years of age. Histopathologically, oval to spindle clear cells were seen in the subepithelial interstitial tissue of septal structures and the walls of the cysts. They had abundant periodic acid-Schiff-positive cytoplasmic glycogen. Immunohistochemically, these cells were positive for a few markers of mesenchymal stem cell-like lineage, including vimentin, CD44, and CD10, and negative for markers of epithelial or specific mesenchymal differentiation; these results were consistent with the reported immunophenotype of PIG cells. These PIG cells were more abundant in her specimen at age 14 years than in the second specimen from adulthood. The present case suggests that BHD lung cysts belong to a group of pulmonary developmental disorders characterized by combined PIG and alveolar simplification/cystic change. Disorders with PIG may persist until adulthood and may be of clinical and pathological significance.
Collapse
Affiliation(s)
- Riken Kawachi
- Division of Respiratory Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Yukio Nakatani
- Department of Pathology, Yokosuka Kyosai Hospital, Yokosuka, Japan
| | | | - Naoya Nakamura
- Department of Pathology, Tokai University Hospital, Isehara, Japan
| | - Yusuke Kondo
- Department of Pathology, Tokai University Hospital, Isehara, Japan
| | - Yoji Nagashima
- Department of Surgical Pathology, Tokyo Women's Medical University, Tokyo, Japan
| | - Tomohiro Nakayama
- Laboratory Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Masahiro Okada
- Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Hiroyuki Sakurai
- Division of Respiratory Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Shinobu Masuda
- Pathology, Nihon University School of Medicine, Tokyo, Japan
| |
Collapse
|
11
|
Tonda K, Iwabuchi Y, Shiga T, Owaki Y, Fujita A, Nakahara T, Sakurai R, Shimizu A, Yamada Y, Okada M, Jinzaki M. Impact of patient characteristic factors on the dynamics of liver glucose metabolism: Evaluation of multiparametric imaging with dynamic whole-body 18 F-fluorodeoxyglucose-positron emission tomography. Diabetes Obes Metab 2023; 25:3521-3528. [PMID: 37589247 DOI: 10.1111/dom.15247] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/20/2023] [Accepted: 07/30/2023] [Indexed: 08/18/2023]
Abstract
AIMS To assess the impact of various patient characteristics on the dynamics of liver glucose metabolism using automated multiparametric imaging with whole-body dynamic 18 F-fluorodeoxyglucose (FDG)-positron emission tomography (PET). MATERIALS AND METHODS We retrospectively enrolled 540 patients who underwent whole-body dynamic FDG-PET. Three quantitative indices representing hepatic glucose metabolism [mean standardized uptake value normalized by lean body mass (SULmean), metabolic glucose rate (kinetic index) and distribution volume (DV)] were measured from multiparametric PET images produced automatically based on the Patlak plot model. Patient characteristics including age, sex, body mass index, fasting time, blood glucose level, and the presence of diabetes mellitus (DM) or hepatic steatosis (HS) were collected. We examined the correlations between the characteristic factors and three quantitative indices using multiple regression analysis. RESULTS The success rate of kinetic analysis using multiparametric PET imaging was 93.3% (504/540). Hepatic SULmean was significantly correlated with age (p < .001), sex (p < .001) and blood glucose level (p = .002). DV was significantly correlated with age (p = .033), sex (p < .001), body mass index (p = .002), fasting time (p = .043) and the presence of HS (p = .002). The kinetic index was significantly correlated with age (p < .001) and sex (p = .004). In the comparison of the healthy, DM and HS groups, patients with DM had a significantly increased SULmean, whereas patients with HS had a significantly decreased DV. CONCLUSIONS Our results showed that liver glucose metabolism was influenced by various patient characteristic factors. Multiparametric FDG-PET imaging can be used to analyse the kinetics of liver glucose metabolism in routine clinical practice.
Collapse
Affiliation(s)
- Kai Tonda
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - Yu Iwabuchi
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - Tohru Shiga
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, Japan
| | - Yoshiki Owaki
- Office of Radiation Technology, Keio University Hospital, Tokyo, Japan
| | - Arashi Fujita
- Office of Radiation Technology, Keio University Hospital, Tokyo, Japan
| | - Takehiro Nakahara
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - Ryosuke Sakurai
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - Atsushi Shimizu
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - Yoshitake Yamada
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Masahiro Jinzaki
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| |
Collapse
|
12
|
Fujihara C, Murakami K, Magi S, Motooka D, Nantakeeratipat T, Canela A, Tanaka RJ, Okada M, Murakami S. Omics-Based Mathematical Modeling Unveils Pathogenesis of Periodontitis in an Experimental Murine Model. J Dent Res 2023; 102:1468-1477. [PMID: 37800405 DOI: 10.1177/00220345231196530] [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] [Indexed: 10/07/2023] Open
Abstract
Periodontitis is a multifactorial disease that progresses via dynamic interaction between bacterial and host-derived genetic factors. The recent trend of omics analyses has discovered many periodontitis-related risk factors. However, how much the individual factor affects the pathogenesis of periodontitis is still unknown. This article aims to identify multiple key factors related to the pathogenesis of periodontitis and quantitatively predict the influence of each factor on alveolar bone resorption by omics analysis and mathematical modeling. First, we induced periodontitis in mice (n = 3 or 4 at each time point) by tooth ligation. Next, we assessed alveolar bone resorption by micro-computed tomography, alterations in the gene expression by RNA sequencing, and the microbiome of the gingivae by 16S ribosomal RNA sequencing during disease pathogenesis. Omics data analysis identified key players (bacteria and molecules) involved in the pathogenesis of periodontitis. We then constructed a mathematical model of the pathogenesis of periodontitis by employing ordinary differential equations that described the dynamic regulatory interplay between the key players and predicted the alveolar bone integrity as output. Finally, we estimated the model parameters using our dynamic experimental data and validated the model prediction of influence on alveolar bone resorption by in vivo experiments. The model predictions and experimental results revealed that monocyte recruitment induced by bacteria-mediated Toll-like receptor activation was the principal reaction regulating alveolar bone resorption in a periodontitis condition. On the other hand, osteoblast-mediated osteoclast differentiation had less impact on bone integrity in a periodontitis condition.
Collapse
Affiliation(s)
- C Fujihara
- Department of Periodontology and Regenerative Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - K Murakami
- Laboratory of Cell Systems, Institute for Protein Research, Osaka University, Suita, Osaka, Japan
| | - S Magi
- Department of Physiology, Division of Cell Physiology, Faculty of Medicine, Toho University, Ota-ku, Tokyo, Japan
| | - D Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - T Nantakeeratipat
- Department of Periodontology and Regenerative Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
- Department of Conservative Dentistry and Prothodontics, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand
| | - A Canela
- The Hakubi Center for Advanced Research, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - R J Tanaka
- Department of Bioengineering, Imperial College London, London, UK
| | - M Okada
- Laboratory of Cell Systems, Institute for Protein Research, Osaka University, Suita, Osaka, Japan
- Human Metaverse Medicine (WPI-PRIMe), Osaka University, Suita, Osaka, Japan
| | - S Murakami
- Department of Periodontology and Regenerative Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| |
Collapse
|
13
|
Abe Y, Okada M, Tanaka K, Toyama K, Miyamoto Y, Hato N. The Association Between Dehydration and the Prognosis of Sudden Sensorineural Hearing Loss. Otol Neurotol Open 2023; 3:e041. [PMID: 38516543 PMCID: PMC10950149 DOI: 10.1097/ono.0000000000000041] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/09/2023] [Indexed: 03/23/2024]
Abstract
Background There is an urgent need to identify undetermined risk factors for sudden sensorineural hearing loss (SSNHL) for the development of effective treatment strategies. SSNHL is likely associated with vascular insufficiency; however, no study has evaluated the relationship between dehydration and SSNHL. Objective This study aimed to investigate the role of dehydration in the development and prognosis of sudden sensorineural hearing loss. Study Design Retrospective case-control study. Setting Secondary referral hospital. Patients and Interventions This was a comparative study that compared dehydration parameters between healthy subjects without SSNHL (n = 94) and patients with SSNHL (n = 94). The study also evaluated the effect of dehydrated conditions on the prognosis of SSNHL. Main Outcome Measures We compared dehydration parameters, such as the blood urea nitrogen-to-creatinine ratio (BUN/Cre) and plasma osmolality (Posm), between matched healthy subjects without SSNHL and patients with SSNHL. To evaluate the effect of dehydrated conditions on the SSNHL prognosis, the SSNHL patients were divided into 2 groups based on the cutoff value obtained from the receiver operating characteristic analysis: hydrated (n = 50; BUN/Cre <21.4) and dehydrated (n = 44; BUN/Cre ≥21.4) groups. Subsequently, the severity and prognosis of SSNHL were analyzed. Results The dehydration parameters, BUN/Cre and Posm, were significantly higher in patients with SSNHL than in healthy subjects. The initial hearing levels and SSNHL grades were worse in the dehydrated group than in the hydrated group. Moreover, a dehydrated condition (BUN/Cre ≥21.4) was associated with a poor SSNHL prognosis in all models of the multiple logistic regression analysis. Conclusions The dehydration parameters of BUN/Cre and Posm were higher in patients with SSNHL than in healthy subjects. Additionally, a dehydrated condition (BUN/Cre ≥21.4) was an independent prognostic factor for SSNHL. Level of evidence: Level 4.
Collapse
Affiliation(s)
- Yasunori Abe
- Department of Otolaryngology, Head and Neck Surgery, Ehime University School of Medicine, Toon, Japan
- Department of Otolaryngology, Jyuzen General Hospital, Niihama, Japan
| | - Masahiro Okada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University School of Medicine, Toon, Japan
| | - Keiko Tanaka
- Department of Epidemiology and Public Health, Ehime University Graduate School of Medicine, Toon, Japan
- Integrated Medical and Agricultural School of Public Health, Ehime University, Matsuyama & Toon, Japan
| | - Kensuke Toyama
- Department of Pharmacology, Ehime University Graduate School of Medicine, Toon, Japan
| | - Yoshito Miyamoto
- Department of Otolaryngology, Jyuzen General Hospital, Niihama, Japan
| | - Naohito Hato
- Department of Otolaryngology, Head and Neck Surgery, Ehime University School of Medicine, Toon, Japan
- Integrated Medical and Agricultural School of Public Health, Ehime University, Matsuyama & Toon, Japan
| |
Collapse
|
14
|
Ueda H, Katakami S, Okada M, Yoshida S, Nakai Y, Mito T, Mizumaki M. Efficient NMR measurement and data analysis supported by the Bayesian inference: The case of the heavy fermion compound YbCo 2Zn 20. J Magn Reson 2023; 357:107585. [PMID: 37952430 DOI: 10.1016/j.jmr.2023.107585] [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] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
We propose a data-driven technique to infer microscopic physical quantities from nuclear magnetic resonance (NMR) spectra, in which the data size and quality required for the Bayesian inference are investigated. The 59Co-NMR measurement of YbCo2Zn20 single crystal generates complex spectra with 28 peaks. By exploiting the site symmetry in the crystal structure, the isotropic Knight shift Kiso and nuclear quadrupole resonance (NQR) frequency νQ were respectively estimated to be Kiso=0.7822±0.0090% and νQ=2.008±0.016 MHz (T=20 K and H≃10.2 T) by analyzing only 30 data points from one spectrum. The estimated νQ is consistent with the precise value obtained in the NQR experiment. Our method can significantly reduce the measurement time and the computational cost of data analysis in NMR experiments.
Collapse
Affiliation(s)
- H Ueda
- Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - S Katakami
- Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - M Okada
- Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan.
| | - S Yoshida
- Department of Material Science, Graduate School of Science, University of Hyogo, Ako-gun, Hyogo, 678-1297, Japan
| | - Y Nakai
- Department of Material Science, Graduate School of Science, University of Hyogo, Ako-gun, Hyogo, 678-1297, Japan
| | - T Mito
- Department of Material Science, Graduate School of Science, University of Hyogo, Ako-gun, Hyogo, 678-1297, Japan
| | - M Mizumaki
- Faculty of Science, Course for Physical Sciences, Kumamoto University, Kurokami, Kumamoto 860-8555, Japan
| |
Collapse
|
15
|
Togawa K, Nakatsuka S, Tsukada J, Ito N, Yamamoto Y, Kogo T, Yoshikawa H, Misu M, Tamura M, Soga S, Inoue M, Yashiro H, Kurata T, Okada M, Jinzaki M. Computed Tomography-guided Drainage with Modified Trocar Technique Using a Drainaway Drainage Kit. Interv Radiol (Higashimatsuyama) 2023; 8:130-135. [PMID: 38020458 PMCID: PMC10681752 DOI: 10.22575/interventionalradiology.2022-0027] [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] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 02/19/2023] [Indexed: 12/01/2023]
Abstract
Purpose Image-guided percutaneous drainage for abscesses is known as a safe and effective treatment. The computed tomography-guided percutaneous drainage kit Drainaway (SB Kawasumi Co., Ltd.), developed on the basis of a modified trocar method, has made it possible to complete the procedure only under computed tomography guidance without radiographic fluoroscopy. This study investigated the feasibility and safety of Drainaway for abscess drainage. Material and Methods In this retrospective observational study, 28 procedures in 27 patients (18 men and 9 women; age 67.0 ± 12.3 years) who underwent computed tomography-guided drainage using Drainaway between March and December 2021 at seven affiliated hospitals were analyzed. Patients with symptomatic, puncturable on computed tomography and refractory abscesses were included. Technical success (successful drainage with computed tomography alone), primary clinical success (successful drainage with Drainaway alone), secondary clinical success (avoidance of surgery), and complications were evaluated. Results The sites of the abscesses were the intraperitoneal, retroperitoneal, and thoracic cavities in 19, 5, and 2 patients, respectively, and subcutaneous tissue in 1 patient. The mean size of the abscesses was 7.1 ± 3.4 cm. The technical success rate was 96.4%; the ligament of the puncture route could not be penetrated in one case. The primary clinical success rate was 77.8%, whereas the secondary clinical success rate of catheter upsizing or replacement was 96.3%. Complications included one case of biliary pleurisy that required drainage. Conclusions Drainaway is a useful device that allows abscess drainage using only computed tomography guidance without radiographic fluoroscopy.
Collapse
Affiliation(s)
- Koji Togawa
- Department of Radiology, Japanese Red Cross Shizuoka Hospital, Japan
| | - Seishi Nakatsuka
- Department of Diagnostic Radiology, Keio University School of Medicine, Japan
| | - Jitsuro Tsukada
- Department of Diagnostic Radiology, Keio University School of Medicine, Japan
| | - Nobutake Ito
- Department of Radiology, Tokyo Saiseikai Central Hospital, Japan
| | - Yosuke Yamamoto
- Department of Diagnostic Radiology, Kawasaki Municipal Hospital, Japan
| | - Togo Kogo
- Department of Diagnostic Radiology, National Hospital Organization, Tokyo Medical Center, Japan
| | - Hiroki Yoshikawa
- Department of Radiology, Nihon University School of Medicine, Japan
| | - Manabu Misu
- Department of Diagnostic Radiology, Japanese Red Cross Ashikaga Hospital, Japan
| | - Masashi Tamura
- Department of Diagnostic Radiology, Keio University School of Medicine, Japan
| | - Shigeyoshi Soga
- Department of Diagnostic Radiology, Keio University School of Medicine, Japan
| | - Masanori Inoue
- Department of Diagnostic Radiology, Keio University School of Medicine, Japan
| | - Hideki Yashiro
- Department of Diagnostic Radiology, Hiratsuka City Hospital, Japan
| | - Tadayoshi Kurata
- Department of Diagnostic Radiology, Kawasaki Municipal Hospital, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Japan
| | - Masahiro Jinzaki
- Department of Diagnostic Radiology, Keio University School of Medicine, Japan
| |
Collapse
|
16
|
Jiao Y, Okada M, Nutan B, Nagaoka N, Bikharudin A, Musa R, Matsumoto T. Fabrication of a Fish-Bone-Inspired Inorganic-Organic Composite Membrane. Polymers (Basel) 2023; 15:4190. [PMID: 37896434 PMCID: PMC10611054 DOI: 10.3390/polym15204190] [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: 09/15/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
Biological materials have properties like great strength and flexibility that are not present in synthetic materials. Using the ribs of crucian carp as a reference, we investigated the mechanisms behind the high mechanical properties of this rib bone, and found highly oriented layers of calcium phosphate (CaP) and collagen fibers. To fabricate a fish-rib-bone-mimicking membrane with similar structure and mechanical properties, this study involves (1) the rapid synthesis of plate-like CaP crystals, (2) the layering of CaP-gelatin hydrogels by gradual drying, and (3) controlling the shape of composite membranes using porous gypsum molds. Finally, as a result of optimizing the compositional ratio of CaP filler and gelatin hydrogel, a CaP filler content of 40% provided the optimal mechanical properties of toughness and stiffness similar to fish bone. Due to the rigidity, flexibility, and ease of shape control of the composite membrane materials, this membrane could be applied as a guided bone regeneration (GBR) membrane.
Collapse
Affiliation(s)
- YuYang Jiao
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan; (Y.J.); (M.O.); (B.N.); (A.B.); (R.M.)
| | - Masahiro Okada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan; (Y.J.); (M.O.); (B.N.); (A.B.); (R.M.)
| | - Bhingaradiya Nutan
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan; (Y.J.); (M.O.); (B.N.); (A.B.); (R.M.)
| | - Noriyuki Nagaoka
- Advanced Research Center for Oral and Craniofacial Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan;
| | - Ahmad Bikharudin
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan; (Y.J.); (M.O.); (B.N.); (A.B.); (R.M.)
| | - Randa Musa
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan; (Y.J.); (M.O.); (B.N.); (A.B.); (R.M.)
| | - Takuya Matsumoto
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan; (Y.J.); (M.O.); (B.N.); (A.B.); (R.M.)
| |
Collapse
|
17
|
Arakane T, Okada M, Nakazawa Y, Tago K, Yoshikawa H, Mizuno M, Abe H, Higaki T, Okamura Y, Takayama T. Comparison between Intravoxel Incoherent Motion and Splenic Volumetry to Predict Hepatic Fibrosis Staging in Preoperative Patients. Diagnostics (Basel) 2023; 13:3200. [PMID: 37892021 PMCID: PMC10605488 DOI: 10.3390/diagnostics13203200] [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: 08/31/2023] [Revised: 10/08/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Intravoxel incoherent motion (IVIM) and splenic volumetry (SV) for hepatic fibrosis (HF) prediction have been reported to be effective. Our purpose is to compare the HF prediction of IVIM and SV in 67 patients with pathologically staged HF. SV was divided by body surface area (BSA). IVIM indices, such as slow diffusion-coefficient related to molecular diffusion (D), fast diffusion-coefficient related to perfusion in microvessels (D*), apparent diffusion-coefficient (ADC), and perfusion related diffusion-fraction (f), were calculated by two observers (R1/R2). D (p = 0.718 for R1, p = 0.087 for R2) and D* (p = 0.513, p = 0.708, respectively) showed a poor correlation with HF. ADC (p = 0.034, p = 0.528, respectively) and f (p < 0.001, p = 0.007, respectively) decreased as HF progressed, whereas SV/BSA increased (p = 0.015 for R1). The AUCs of SV/BSA (0.649-0.698 for R1) were higher than those of f (0.575-0.683 for R1 + R2) for severe HF (≥F3-4 and ≥F4), although AUCs of f (0.705-0.790 for R1 + R2) were higher than those of SV/BSA (0.628 for R1) for mild or no HF (≤F0-1). No significant differences to identify HF were observed between IVIM and SV/BSA. SV/BSA allows a higher estimation for evaluating severe HF than IVIM. IVIM is more suitable than SV/BSA for the assessment of mild or no HF.
Collapse
Affiliation(s)
- Takayuki Arakane
- Department of Radiology, Nihon University School of Medicine, Tokyo 173-8610, Japan; (T.A.)
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Tokyo 173-8610, Japan; (T.A.)
| | - Yujiro Nakazawa
- Department of Radiology, Nihon University School of Medicine, Tokyo 173-8610, Japan; (T.A.)
| | - Kenichiro Tago
- Department of Radiology, Nihon University School of Medicine, Tokyo 173-8610, Japan; (T.A.)
| | - Hiroki Yoshikawa
- Department of Radiology, Nihon University School of Medicine, Tokyo 173-8610, Japan; (T.A.)
| | - Mariko Mizuno
- Department of Radiology, Nihon University School of Medicine, Tokyo 173-8610, Japan; (T.A.)
| | - Hayato Abe
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Tokio Higaki
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Yukiyasu Okamura
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Tadatoshi Takayama
- Department of Digestive Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| |
Collapse
|
18
|
Okada M, Shimizu K, Nakazato H, Yamasaki S, Fujii SI. Detection of mutant antigen-specific T cell receptors against multiple myeloma for T cell engineering. Mol Ther Methods Clin Dev 2023; 29:541-555. [PMID: 37359417 PMCID: PMC10285226 DOI: 10.1016/j.omtm.2023.05.014] [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] [Received: 03/21/2023] [Accepted: 05/12/2023] [Indexed: 06/28/2023]
Abstract
Multiple myeloma (MM) remains an incurable hematological neoplasm. Neoantigen-specific T cell receptor (TCR)-engineered T (TCR-T) cell therapy is a potential alternative treatment. Particularly, TCRs derived from a third-party donor may cover broad ranges of neoantigens, whereas TCRs in patients suffering from immune disorders are limited. However, the efficacy and feasibility of treating MM have not been evaluated thoroughly. In this study, we established a system for identifying immunogenic mutant antigens on MM cells and their corresponding TCRs using healthy donor-derived peripheral blood mononuclear cells (PBMCs). Initially, the immune responses to 35 candidate peptides predicted by the immunogenomic analysis were investigated. Peptide-reactive T lymphocytes were enriched, and subsequently, TCR repertoires were determined by single-cell TCR sequencing. Eleven reconstituted TCRs showed mutation-specific responses against 4 peptides. Particularly, we verified the HLA-A∗24:02-binding QYSPVQATF peptide derived from COASY S55Y as the naturally processed epitope across MM cells, making it a promising immune target. Corresponding TCRs specifically recognized COASY S55Y+HLA-A∗24:02+ MM cells and augmented tumoricidal activity. Finally, adoptive cell transfer of TCR-T cells showed objective responses in the xenograft model. We initiatively proposed the utility of tumor mutated antigen-specific TCR genes to suppress MM. Our unique strategy will facilitate further identification of neoantigen-specific TCRs.
Collapse
Affiliation(s)
- Masahiro Okada
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Kanako Shimizu
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Hiroshi Nakazato
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Satoru Yamasaki
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Shin-ichiro Fujii
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
- RIKEN Program for Drug Discovery and Medical Technology Platforms, RIKEN, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| |
Collapse
|
19
|
Migita S, Murata N, Fukamachi D, Fukumoto K, Arai R, Uchiyama H, Tago K, Okada M, Tanaka M, Okumura Y. Management of acute pulmonary embolism with sequential hybrid therapy of surgical thrombectomy and rivaroxaban intensive therapy: a case report. Oxf Med Case Reports 2023; 2023:omad033. [PMID: 37091682 PMCID: PMC10120437 DOI: 10.1093/omcr/omad033] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/06/2023] [Accepted: 03/12/2023] [Indexed: 04/25/2023] Open
Abstract
Acute pulmonary embolism (PE) is often associated with rapid hemodynamic deterioration or death. Therefore, early therapeutic intervention is important. A 45-year-old man was diagnosed with intermediate-high risk PE, and sequential hybrid therapy consisting of surgical thrombectomy and rivaroxaban intensive therapy was administered. During the course of treatment, echocardiography revealed improvement in pulmonary artery systolic pressure, and thrombus volume analysis by computed tomography revealed a drastic reduction in the size of the thrombus. Sequential hybrid therapy for acute PE not only stabilizes hemodynamics, but may also prevent conversion to chronic thromboembolic pulmonary hypertension by sufficiently reducing the volume of the thrombus.
Collapse
Affiliation(s)
- Shohei Migita
- Division of Cardiology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Nobuhiro Murata
- Correspondence address. Division of Cardiology, Department of Internal Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi-kamicho, Itabashi-ku, Tokyo 173-8610, Japan. Tel: +81-3-3972-8111; Fax: +81-3-3972-0015; E-mail:
| | | | - Katsunori Fukumoto
- Division of Cardiology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Riku Arai
- Division of Cardiology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Hiroe Uchiyama
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Kenichiro Tago
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Masashi Tanaka
- Department of Cardiovascular Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Yasuo Okumura
- Division of Cardiology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| |
Collapse
|
20
|
Irie M, Okada M, Maruo Y, Nishigawa G, Matsumoto T. Shear Bond Strength of Resin Luting Materials to Lithium Disilicate Ceramic: Correlation between Flexural Strength and Modulus of Elasticity. Polymers (Basel) 2023; 15:polym15051128. [PMID: 36904369 PMCID: PMC10006982 DOI: 10.3390/polym15051128] [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: 01/20/2023] [Revised: 02/16/2023] [Accepted: 02/16/2023] [Indexed: 02/26/2023] Open
Abstract
This study investigates the effect of the curing mode (dual-cure vs. self-cure) of resin cements (four self-adhesive and seven conventional cements) on their flexural strength and flexural modulus of elasticity, alongside their shear bond strength to lithium disilicate ceramics (LDS). The study aims to determine the relationship between the bond strength and LDS, and the flexural strength and flexural modulus of elasticity of resin cements. Twelve conventional or adhesive and self-adhesive resin cements were tested. The manufacturer's recommended pretreating agents were used where indicated. The shear bond strengths to LDS and the flexural strength and flexural modulus of elasticity of the cement were measured immediately after setting, after one day of storage in distilled water at 37 °C, and after 20,000 thermocycles (TC 20k). The relationship between the bond strength to LDS, flexural strength, and flexural modulus of elasticity of resin cements was investigated using a multiple linear regression analysis. For all resin cements, the shear bond strength, flexural strength, and flexural modulus of elasticity were lowest immediately after setting. A clear and significant difference between dual-curing and self-curing modes was observed in all resin cements immediately after setting, except for ResiCem EX. Regardless of the difference of the core-mode condition of all resin cements, flexural strengths were correlated with the LDS surface upon shear bond strengths (R2 = 0.24, n = 69, p < 0.001) and the flexural modulus of elasticity was correlated with them (R2 = 0.14, n = 69, p < 0.001). Multiple linear regression analyses revealed that the shear bond strength was 17.877 + 0.166, the flexural strength was 0.643, and the flexural modulus was (R2 = 0.51, n = 69, p < 0.001). The flexural strength or flexural modulus of elasticity may be used to predict the bond strength of resin cements to LDS.
Collapse
Affiliation(s)
- Masao Irie
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Okayama 700-8525, Japan
- Correspondence: ; Tel.: +81-86-235-6668
| | - Masahiro Okada
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Okayama 700-8525, Japan
| | - Yukinori Maruo
- Department of Prosthodontics, Division of Dentistry, Okayama University, 2-5-1 Shikata-cho, Okayama 700-8525, Japan
| | - Goro Nishigawa
- Department of Prosthodontics, Division of Dentistry, Okayama University, 2-5-1 Shikata-cho, Okayama 700-8525, Japan
| | - Takuya Matsumoto
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, 2-5-1 Shikata-cho, Okayama 700-8525, Japan
| |
Collapse
|
21
|
Suzuki M, Kimura T, Nakano Y, Kobayashi M, Okada M, Matsumoto T, Nakamura N, Hashimoto Y, Kishida A. Preparation of mineralized pericardium by alternative soaking for soft-hard interregional tissue application. J Biomed Mater Res A 2023; 111:198-208. [PMID: 36069375 DOI: 10.1002/jbm.a.37445] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 08/10/2022] [Accepted: 08/22/2022] [Indexed: 01/10/2023]
Abstract
Recent applications of decellularized tissues include the ectopic use of sheets and powders for three-dimensional (3D) tissue reconstruction. Decellularized tissues are modified (or fabricated) with the desired functions for application to the target (transplanted or used) tissue, including soft-hard interregional tissues, such as ligaments, tendons, and periodontal ligaments. This study aimed to prepare a mineralized decellularized pericardium to construct a soft-hard interregional tissue by 3D fabrication of decellularized pericardium, for example, rolling up to a cylindrical form. The decellularized pericardial tissue was prepared using the high hydrostatic pressurization (HHP) and surfactants method. The pericardium consisted of bundles of aligned fibers, and the bundles were slightly disordered when prepared with the surfactant decellularization method compared with that prepared using the HHP decellularization method. Mineralization of the decellularized pericardium was performed using an alternate soaking process with various cycles. The surface of the decellularized pericardium was covered with calcium phosphate precipitates, which accumulated on the surface with an increasing number of soaking cycles. The inside of the HHP decellularized pericardium was mineralized uniformly, whereas the mineralization of the decellularized pericardium decreased toward the interior. These findings suggest that the decellularization method strongly affects the structure and mineralized parts of the decellularized pericardium. The mineralized decellularized pericardium could be a candidate material for reconstructing alternative interregional tissues, such as ligaments and tendons.
Collapse
Affiliation(s)
- Mika Suzuki
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tsuyoshi Kimura
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuta Nakano
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mako Kobayashi
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Masahiro Okada
- Department of Biomaterials, Okayama University, Okayama, Japan
| | | | - Naoko Nakamura
- Department of Bioscience and Engineering, Shibaura Institute of Technology, Tokyo, Japan
| | - Yoshihide Hashimoto
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akio Kishida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| |
Collapse
|
22
|
Anada R, Hara ES, Nagaoka N, Okada M, Kamioka H, Matsumoto T. Important roles of odontoblast membrane phospholipids in early dentin mineralization. J Mater Chem B 2023; 11:657-666. [PMID: 36541228 DOI: 10.1039/d2tb02351b] [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: 12/12/2022]
Abstract
The objective of this study was to first identify the timing and location of early mineralization of mouse first molar, and subsequently, to characterize the nucleation site for mineral formation in dentin from a materials science viewpoint and evaluate the effect of environmental cues (pH) affecting early dentin formation. Early dentin mineralization in mouse first molars began in the buccal central cusp on post-natal day 0 (P0), and was first hypothesized to involve collagen fibers. However, elemental mapping indicated the co-localization of phospholipids with collagen fibers in the early mineralization area. Co-localization of phosphatidylserine and annexin V, a functional protein that binds to plasma membrane phospholipids, indicated that phospholipids in the pre-dentin matrix were derived from the plasma membrane. A 3-dimensional in vitro biomimetic mineralization assay confirmed that phospholipids from the plasma membrane are critical factors initiating mineralization. Additionally, the direct measurement of the tooth germ pH, indicated it to be alkaline. The alkaline environment markedly enhanced the mineralization of cell membrane phospholipids. These results indicate that cell membrane phospholipids are nucleation sites for mineral formation, and could be important materials for bottom-up approaches aiming for rapid and more complex fabrication of dentin-like structures.
Collapse
Affiliation(s)
- Risa Anada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan. .,Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Emilio Satoshi Hara
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
| | - Noriyuki Nagaoka
- Advanced Research Center for Oral and Craniofacial Sciences, Dental School, Okayama University, Okayama, Japan
| | - Masahiro Okada
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
| | - Hiroshi Kamioka
- Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Takuya Matsumoto
- Department of Biomaterials, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
| |
Collapse
|
23
|
Mukai N, Okada M, Konishi S, Okita M, Ogawa S, Nishikawa K, Annen S, Ohshita M, Matsumoto H, Murata S, Harima Y, Kikuchi S, Aibara S, Sei H, Aoishi K, Asayama R, Sato E, Takagi T, Tanaka-Nishikubo K, Teraoka M, Hato N, Takeba J, Sato N. Cricotracheostomy for patients with severe COVID-19: A case control study. Front Surg 2023; 10:1082699. [PMID: 36733889 PMCID: PMC9888534 DOI: 10.3389/fsurg.2023.1082699] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/03/2023] [Indexed: 01/18/2023] Open
Abstract
Background Tracheostomy is an important procedure for the treatment of severe coronavirus disease-2019 (COVID-19). Older age and obesity have been reported to be associated with the risk of severe COVID-19 and prolonged intubation, and anticoagulants are often administered in patients with severe COVID-19; these factors are also related to a higher risk of tracheostomy. Cricotracheostomy, a modified procedure for opening the airway through intentional partial cricoid cartilage resection, was recently reported to be useful in cases with low-lying larynx, obesity, stiff neck, and bleeding tendency. Here, we investigated the usefulness and safety of cricotracheostomy for severe COVID-19 patients. Materials and methods Fifteen patients with severe COVID-19 who underwent cricotracheostomy between January 2021 and April 2022 with a follow-up period of ≥ 14 days were included in this study. Forty patients with respiratory failure not related to COVID-19 who underwent traditional tracheostomy between January 2015 and April 2022 comprised the control group. Data were collected from medical records and comprised age, sex, body mass index, interval from intubation to tracheostomy, use of anticoagulants, complications of tracheostomy, and decannulation. Results Age, sex, and days from intubation to tracheostomy were not significantly different between the COVID-19/cricotracheostomy and control/traditional tracheostomy groups. Body mass index was significantly higher in the COVID-19 group than that in the control group (P = 0.02). The rate of use of anticoagulants was significantly higher in the COVID-19 group compared with the control group (P < 0.01). Peri-operative bleeding, subcutaneous emphysema, and stomal infection rates were not different between the groups, while stomal granulation was significantly less in the COVID-19 group (P = 0.04). Conclusions These results suggest that cricotracheostomy is a safe procedure in patients with severe COVID-19.
Collapse
Affiliation(s)
- Naoki Mukai
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Masahiro Okada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan,Correspondence: Masahiro Okada
| | - Saki Konishi
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Mitsuo Okita
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Siro Ogawa
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Kosuke Nishikawa
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan,Department of Bone and Joint Surgery, Ehime University School of Medicine, Toon, Japan
| | - Suguru Annen
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Muneaki Ohshita
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Hironori Matsumoto
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Satoru Murata
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Yutaka Harima
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Satoshi Kikuchi
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Shiori Aibara
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Hirofumi Sei
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Kunihide Aoishi
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Rie Asayama
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Eriko Sato
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Taro Takagi
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Kaori Tanaka-Nishikubo
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Masato Teraoka
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Naohito Hato
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Jun Takeba
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| | - Norio Sato
- Department of Emergency and Critical Care Medicine, Ehime University Graduate School of Medicine, Toon, Japan
| |
Collapse
|
24
|
Okada M, Okada K, Kakehashi M. Common eating habit patterns are associated with a high maximum occlusal force and pre-eating cardiac vagal tone. PeerJ 2023; 11:e15091. [PMID: 36987454 PMCID: PMC10040181 DOI: 10.7717/peerj.15091] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 02/27/2023] [Indexed: 03/30/2023] Open
Abstract
Background Masticatory function is associated with nervous function, including autonomic nervous function, and both functions are influenced by human habits. In a previous preliminary study of 53 young women, we found that eating habit patterns were associated with occlusal force as an indicator of masticatory function. Therefore, we hypothesized that relationships exist between occlusal force, the autonomic nervous system, and eating habit patterns. Methods To test our hypothesis, we analyzed the relationship between heart rate variability measured before and after lunch in 53 young women, and measured and surveyed maximum occlusal force and eating habit patterns, respectively, in these participants. Results High occlusal force was associated with an increased high-frequency (HF) component (vagal tone index) of the heart rate variability index immediately before lunch (standardized regression coefficient (β) = 0.417, P = 0.002). Each of the eating habit items surveyed in a questionnaire showed a similar tendency for the HF component immediately before lunch and maximum occlusal force; in particular, "Habit of eating breakfast" and "Number of meals per day" were significantly associated with both variables. Additionally, total eating habit scores related to higher maximum occlusal force were associated with an increase in the HF component immediately before lunch (β = 0.514, P < 0.001). The maximum occlusal force and the pre-eating HF component values were stratified by total eating habit scores (into low, medium, high categories), and the high scores were significantly higher than the medium or low scores. Conclusions Occlusal force and the pre-eating cardiac vagal response of individuals were characterized by their common eating habit patterns, indicating that eating habits may be simultaneously associated with the development of masticatory function, nervous system development, and cardiovascular rhythm. Although further research is needed to investigate these relationships in detail, our findings provide insights that will inform the study of physical functions, neurodevelopment, habitual behaviors, and health in humans.
Collapse
Affiliation(s)
- Masahiro Okada
- Department of Food and Dietetics, Hiroshima Bunka Gakuen Two-Year College, Hiroshima, Japan
| | - Kosuke Okada
- Department of Internal Medicine COOP Saeki Hospital, Hiroshima, Japan
| | - Masayuki Kakehashi
- Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| |
Collapse
|
25
|
Nakata T, Okada M, Nishihara E, Ikedo A, Asoh S, Takagi T, Tokunaga N, Hato N, Imai Y. Effect of hormonal therapy on the otoconial changes caused by estrogen deficiency. Sci Rep 2022; 12:22596. [PMID: 36585504 PMCID: PMC9803649 DOI: 10.1038/s41598-022-27240-5] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Benign paroxysmal positional vertigo (BPPV) is associated with menopause and/or osteopenia. Morphological changes in the otoconial layer have been reported after ovariectomy (OVX). Moreover, hormone replacement therapy decreases BPPV risk. However, knowledge concerning the effect of hormonal therapy on the otoconial changes caused by estrogen deficiency is limited. We aimed to examine the effect of hormonal therapy on otoconial changes caused by estrogen deficiency. We hypothesized that hormonal therapy could reduce otoconial changes caused by OVX. Eight-week-old C57BL/6 mice were divided into four groups: sham operation with implantation of vehicle (sham + v), OVX with implantation of vehicle (OVX + v), OVX with implantation of estradiol (E2) (OVX + E2), and OVX with implantation of raloxifene (RAL) (OVX + RAL) groups. Otoconial layer volume was measured by micro-CT at 4 weeks after OVX or the sham operation. The otic bullae were removed; immunohistochemistry was performed for estrogen receptor alpha and 4-hydroxynonenal. Otoconial layer volume was significantly higher in the OVX + v than in the sham + v group. E2 and RAL significantly reduced these changes in the endometrial layer. The staining of estrogen receptor alpha and 4-hydroxynonenal were stronger in the OVX + v than in the sham + v group but equal in the sham + v, OVX + E2, and OVX + RAL groups. These results indicate that E2 and RAL are effective against morphological changes of the otoconial layer caused by estrogen deficiency via oxidative stress reduction.
Collapse
Affiliation(s)
- Takahiro Nakata
- grid.255464.40000 0001 1011 3808Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime 791-0295 Japan ,Department of Otolaryngology, Ehime Prefectural Niihama Hospital, Niihama, Japan
| | - Masahiro Okada
- grid.255464.40000 0001 1011 3808Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime 791-0295 Japan
| | - Eriko Nishihara
- grid.255464.40000 0001 1011 3808Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime 791-0295 Japan
| | - Aoi Ikedo
- grid.255464.40000 0001 1011 3808Division of Integrative Pathophysiology, Proteo-Science Center, Ehime University, Toon, Japan
| | - Sawa Asoh
- grid.255464.40000 0001 1011 3808Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime 791-0295 Japan
| | - Taro Takagi
- grid.255464.40000 0001 1011 3808Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime 791-0295 Japan
| | - Naohito Tokunaga
- grid.255464.40000 0001 1011 3808Division of Medical Research Support the Advanced Research Support Center, Ehime University, Toon, Japan
| | - Naohito Hato
- grid.255464.40000 0001 1011 3808Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime 791-0295 Japan
| | - Yuuki Imai
- grid.255464.40000 0001 1011 3808Division of Integrative Pathophysiology, Proteo-Science Center, Ehime University, Toon, Japan ,grid.255464.40000 0001 1011 3808Department of Pathophysiology, Ehime University Graduate School of Medicine, Toon, Japan ,grid.255464.40000 0001 1011 3808Division of Laboratory Animal Research, Advanced Research Support Center, Ehime University, Toon, Japan
| |
Collapse
|
26
|
Okada M, Shinozaki S, Nomura T, Hayashi Y, Morikawa T, Kitamura M, Fukuda H, Arita M, Takezawa T, Sunada K, Lefor AK, Yamamoto H. Feasibility of progressive polyp contraction with underwater endoscopic mucosal resection in ≥ 20 mm superficial colorectal lesions. Endosc Int Open 2022; 10:E1577-E1582. [PMID: 36531686 PMCID: PMC9754873 DOI: 10.1055/a-1955-3379] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 09/30/2022] [Indexed: 10/10/2022] Open
Abstract
Background and study aims Underwater endoscopic mucosal resection (UEMR) does not always result in en bloc resection of large colorectal lesions. The aim of this study was to demonstrate the feasibility of en bloc resection with progressive polyp contraction with underwater endoscopic mucosal resection (PP-CUE) of large, superficial colorectal lesions. The advantage of PP-CUE is to enable resection of a superficial non-polypoid lesion that is larger than the snare diameter. Patients and methods Eleven consecutive lesions in ten patients who underwent UEMR with PP-CUE of large superficial colorectal lesions (20 mm or greater) were included. Results The median lesion diameter was 24 mm (interquartile range [IQR], 20-24 mm). All lesions were larger than the 15-mm rotatable snare that was used. Median procedure time and PP-CUE time were 11 minutes (IQR, 8.5-12.3) and 2.3 minutes (IQR, 1.9-3.4), respectively. Pathological diagnoses of resected specimens included six adenomas, three sessile serrated lesions, and two slightly invasive submucosal carcinomas. En bloc and R0 resection rates were both 91 % (10/11). No adverse events occurred. Conclusions PP-CUE is useful to resect superficial non-polypoid colorectal lesions 20 to 25 mm in diameter in an en bloc fashion.
Collapse
Affiliation(s)
- Masahiro Okada
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Satoshi Shinozaki
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan,Shinozaki Medical Clinic, Utsunomiya, Japan
| | - Tatsuma Nomura
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Yoshikazu Hayashi
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Takaaki Morikawa
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Masafumi Kitamura
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Hisashi Fukuda
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Munefumi Arita
- Department of Surgery, Jichi Medical University, Shimotsuke, Japan
| | - Takahito Takezawa
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Keijiro Sunada
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | | | - Hironori Yamamoto
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| |
Collapse
|
27
|
Okada M, Ogawa H, Takagi T, Nishihara E, Yoshida T, Hyodo J, Shinomori Y, Honda N, Fujiwara T, Teraoka M, Yamada H, Hirano SI, Hato N. A double-blinded, randomized controlled clinical trial of hydrogen inhalation therapy for idiopathic sudden sensorineural hearing loss. Front Neurosci 2022; 16:1024634. [PMID: 36507329 PMCID: PMC9731512 DOI: 10.3389/fnins.2022.1024634] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 11/08/2022] [Indexed: 11/25/2022] Open
Abstract
Background Hydrogen (H2) has been reported to be effective in reducing hearing loss due to several causes in animal studies. However, no study has examined the effectiveness of H2 in treating hearing loss in humans. Thus, we investigated whether H2 is effective for the treatment of idiopathic sudden sensorineural hearing loss (ISSNHL). Materials and methods We conducted a double-blind randomized controlled trial at six hospitals between June 2019 and March 2022. The study protocol and trial registration have been published in the Japan Registry of Clinical Trials (jRCT, No. jRCTs06119004). We randomly assigned patients with ISSNHL to receive either H2 (H2 group) or air as a placebo (control group) through inhalation combined with the administration of systemic glucocorticoids and prostaglandin E1. The primary outcome was the hearing threshold and changes in hearing threshold 3 months after therapy. In contrast, the secondary outcomes included the proportion of patients with a good prognosis (complete recovery or marked improvement). Results Sixty-five patients with ISSNHL (31 and 34 in the H2 and control groups, respectively) were included in this study. The hearing threshold 3 months after treatment was not significantly different between the groups; 39.0 decibels (dB) (95% confidence interval [CI]: 28.7-49.3) and 49.5 dB (95% CI: 40.3-58.7) in the H2 and control groups, respectively. In contrast, the changes in hearing threshold 3 months after treatment was 32.7 dB (95% CI: 24.2-41.3) and 24.2 dB (95% CI: 18.1-30.3) in the H2 and control groups, respectively. Consequently, the changes in hearing threshold were significantly better in the H2 group than in the control group (P = 0.048). However, no adverse effects due to the inhalation of H2 gas have been reported. Conclusion This is the first study to investigate the efficacy of H2 for the treatment of ISSNHL in humans. The results suggest that H2 therapy may be effective for ISSNHL treatment. Clinical trial registration [https://jrct.niph.go.jp/re/reports/detail/10442], identifier [jRCTs06119004].
Collapse
Affiliation(s)
- Masahiro Okada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan,*Correspondence: Masahiro Okada,
| | - Hideo Ogawa
- Department of Otolaryngology, Head and Neck Surgery, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Taro Takagi
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan,Department of Otolaryngology, Ehime Prefectural Niihama Hospital, Niihama, Japan
| | - Eriko Nishihara
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan,Department of Otolaryngology, Ehime Prefectural Niihama Hospital, Niihama, Japan
| | - Tadashi Yoshida
- Department of Otolaryngology, Head and Neck Surgery, Uwajima City Hospital, Uwajima, Japan
| | - Jun Hyodo
- Department of Otolaryngology, Takanoko Hospital, Matsuyama, Japan
| | - Yusuke Shinomori
- Department of Otolaryngology, Matsuyama Red Cross Hospital, Matsuyama, Japan
| | - Nobumitsu Honda
- Department of Otolaryngology, Head and Neck Surgery, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Takashi Fujiwara
- Department of Public Health Research, Kurashiki Clinical Research Institute, Kurashiki, Japan
| | - Masato Teraoka
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Hiroyuki Yamada
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| | - Shin-ichi Hirano
- Department of Research and Development, MiZ Company Limited, Kamakura, Japan
| | - Naohito Hato
- Department of Otolaryngology, Head and Neck Surgery, Ehime University Graduate School of Medicine, Toon, Japan
| |
Collapse
|
28
|
Wang F, Numata K, Nihonmatsu H, Chuma M, Ideno N, Nozaki A, Ogushi K, Tanab M, Okada M, Luo W, Nakano M, Otani M, Inayama Y, Maeda S. Added Value of Ultrasound-Based Multimodal Imaging to Diagnose Hepatic Sclerosed Hemangioma before Biopsy and Resection. Diagnostics (Basel) 2022; 12:diagnostics12112818. [PMID: 36428878 PMCID: PMC9689571 DOI: 10.3390/diagnostics12112818] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/10/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Imaging methods have the overwhelming advantage of being non-invasive in the diagnosis of hepatic lesions and, thanks to technical developments in the field of ultrasound (US), radiation exposure can also be avoided in many clinical situations. In particular, contrast-enhanced US (CEUS) outperforms other radiological methods in regard to real-time images, repeatability, and prompt reporting and demonstrates relatively few contraindications and adverse reactions. In this study, we reported in detail a rare benign tumor: hepatic sclerosed hemangioma (HSH). We described US-based multimodal imaging (B-flow imaging, US elastography, and Sonazoid CEUS) features of this HSH case. Furthermore, by summarizing the recently published literature on the imaging diagnosis of HSH, we offered readers comprehensive knowledge of conventional imaging methods (CT, MRI) and CEUS in the diagnosis of HSH and preliminarily discussed their mechanism of pathology-based diagnosis. Our multimodal imaging approach may provide a diagnostic strategy for HSH, thus avoiding unnecessary biopsy or resection.
Collapse
Affiliation(s)
- Feiqian Wang
- Ultrasound Department, The First Affiliated Hospital of Xi’an Jiaotong University, No. 277 West Yanta Road, Xi’an 710061, China
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Kazushi Numata
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
- Correspondence: ; Tel.: +81-45-261-5656 or +81-45-261-9492
| | - Hiromi Nihonmatsu
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Makoto Chuma
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Naomi Ideno
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Akito Nozaki
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Katsuaki Ogushi
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Mikiko Tanab
- Division of Diagnostic Pathology, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, 30-1 Oyaguchi Kami-cho, Itabashi-ku, Tokyo 173-8610, Japan
| | - Wen Luo
- Department of Ultrasound, Xijing Hospital, Air Force Military Medical University, No. 127 Changle West Road, Xi’an 710032, China
| | - Masayuki Nakano
- Tokyo Central Pathology Laboratory, 838-1, Utsukimachi, Hachioji 192-0024, Japan
| | - Masako Otani
- Division of Diagnostic Pathology, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Yoshiaki Inayama
- Division of Diagnostic Pathology, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Japan
| | - Shin Maeda
- Division of Gastroenterology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan
| |
Collapse
|
29
|
Kadoya K, Hara ES, Okada M, Jiao YY, Nakano T, Sasaki A, Matsumoto T. Fabrication of initial trabecular bone-inspired three-dimensional structure with cell membrane nano fragments. Regen Biomater 2022; 10:rbac088. [PMID: 36683756 PMCID: PMC9845518 DOI: 10.1093/rb/rbac088] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 10/07/2022] [Accepted: 10/22/2022] [Indexed: 01/19/2023] Open
Abstract
The extracellular matrix of trabecular bone has a large surface exposed to the bone marrow and plays important roles such as hematopoietic stem cell niche formation and maintenance. In vitro reproduction of trabecular bone microenvironment would be valuable not only for developing a functional scaffold for bone marrow tissue engineering but also for understanding its biological functions. Herein, we analyzed and reproduced the initial stages of trabecular bone formation in mouse femur epiphysis. We identified that the trabecular bone formation progressed through the following steps: (i) partial rupture of hypertrophic chondrocytes; (ii) calcospherite formation on cell membrane nano fragments (CNFs) derived from the ruptured cells; and (iii) calcospherite growth and fusion to form the initial three-dimensional (3D) structure of trabecular bones. For reproducing the initial trabecular bone formation in vitro, we collected CNFs from cultured cells and used as nucleation sites for biomimetic calcospherite formation. Strikingly, almost the same 3D structure of the initial trabecular bone could be obtained in vitro by using additional CNFs as a binder to fuse biomimetic calcospherites.
Collapse
Affiliation(s)
- Koichi Kadoya
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan,Department of Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Emilio Satoshi Hara
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Masahiro Okada
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Yu Yang Jiao
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Takayoshi Nakano
- Division of Materials & Manufacturing Science, Osaka University, Osaka 565-0871, Japan
| | - Akira Sasaki
- Department of Maxillofacial Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | | |
Collapse
|
30
|
Yoshida N, Hayashi Y, Kashida H, Tomita Y, Dohi O, Inoue K, Hirose R, Itoh Y, Okada M, Yoshimoto S, Fujinuma T, Sakamoto H, Sunada K, Komeda Y, Sekai I, Okai N, Yamamoto H. Images of laser and light-emitting diode colonoscopy for comparing large colorectal lesion visibility with linked color imaging and white-light imaging. Dig Endosc 2022; 34:1413-1421. [PMID: 35656632 DOI: 10.1111/den.14370] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/31/2022] [Indexed: 02/08/2023]
Abstract
OBJECTIVES In light-emitting diode (LED) and laser colonoscopy, linked color imaging (LCI) superiority to white-light imaging (WLI) for polyp detection is shown separately. We analyzed the noninferiority of LCI between LED and laser colonoscopy and that of WLI (LECOL study). METHODS We prospectively collected nonpolypoid lesions with WLI and LCI using LED and laser colonoscopy from January 2021 to August 2021. All images were evaluated randomly by 12 endoscopists (six nonexperts and six experts in three institutions) using the polyp visibility score: 4, excellent; 3, good; 2, fair; and 1, poor. The comparison score (LED better/similar/laser better) for redness and brightness was evaluated for WLI and LCI pictures of each lesion. RESULTS Finally, 63 nonpolypoid lesions were evaluated, and the mean polyp size was 24.5 ± 13.4 mm. Histopathology revealed 13 serrated lesions and 50 adenomatous/cancerous lesions. The mean polyp visibility scores of LCI pictures were significantly higher than those of WLI in the LED (3.35 ± 0.85 vs. 3.08 ± 0.91, P < 0.001) and the laser (3.40 ± 1.71 vs. 3.05 ± 0.97, P < 0.001) group, and the noninferiority of LCI pictures between LED and laser was significant (P < 0.001). The comparison scores revealed that the evaluation of redness and brightness (LED better/similar/laser better) were 26.8%/40.1%/33.1% and 43.5%/43.5%/13.0% for LCI pictures (P < 0.001) and 20.6%/44.3%/35.1% and 60.3%/31.7%/8.0% for WLI pictures (P < 0.001), respectively. CONCLUSION The noninferiority of polyp visibility with WLI and LCI in LED and laser colonoscopy was shown. WLI and LCI of LED tended to be brighter and less reddish than those of laser.
Collapse
Affiliation(s)
- Naohisa Yoshida
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshikazu Hayashi
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Hiroshi Kashida
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Yuri Tomita
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Osamu Dohi
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ken Inoue
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ryohei Hirose
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshito Itoh
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masahiro Okada
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Shiori Yoshimoto
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Toshihiro Fujinuma
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Hirotsugu Sakamoto
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Keijiro Sunada
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | - Yoriaki Komeda
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Ikue Sekai
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Natsuki Okai
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Hironori Yamamoto
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| |
Collapse
|
31
|
Ishibashi N, Maebayashi T, Aizawa T, Sakaguchi M, Okada M. Coronavirus disease 2019 (COVID-19) in patients before, during, or after lung irradiation, and serum SP-A and SP-D levels. Thorac Cancer 2022; 13:3200-3207. [PMID: 36178187 PMCID: PMC9539315 DOI: 10.1111/1759-7714.14677] [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] [Received: 08/18/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND The correlation between COVID-19 and RT has not been determined to date and remains a clinical question. The aim of this study was to evaluate coronavirus disease 2019 (COVID-19) pneumonia before, during, and after radiation therapy (RT) regarding the radiation doses, radiation pneumonitis, and surfactant protein levels. METHODS We evaluated patients diagnosed with COVID-19 before, during, or after RT for the lung between August 2020 and April 2022. In patients with breast cancer, the RT dose to the ipsilateral lung was determined. In all other patients, bilateral lung RT doses were determined. Patients diagnosed with COVID-19 after RT were evaluated to determine whether radiation pneumonitis had worsened compared with before RT. The serum levels of the surfactant proteins SP-A and SP-D were measured before, during, and after RT. RESULTS The patients included in the study comprised three men (27.3%) and eight women (72.7%). The primary cancer sites were the breast (n = 7; 63.7%), lung (n = 2; 18.1%), esophagus (n = 1; 9.1%), and tongue (9.1%). COVID-19 was diagnosed before RT in four patients, during RT in two patients, and after RT in five patients. Six (54.5%) patients developed COVID-19 pneumonia. Radiation pneumonitis grade ≥2 was not identified in any patient, and radiation pneumonitis did not worsen after RT in any patient. No rapid increases or decreases in SP-A and SP-D levels occurred after the diagnosis of COVID-19 in all patients regardless of RT timing. CONCLUSIONS COVID-19 did not appear to result in lung toxicity and surfactant protein levels did not change dramatically.
Collapse
Affiliation(s)
- Naoya Ishibashi
- Department of RadiologyNihon University, School of MedicineTokyoJapan,Department of RadiologyNihon University HospitalTokyoJapan
| | | | - Takuya Aizawa
- Department of RadiologyNihon University, School of MedicineTokyoJapan
| | | | - Masahiro Okada
- Department of RadiologyNihon University, School of MedicineTokyoJapan
| |
Collapse
|
32
|
Natsumeda M, Matsuzawa H, Watanabe M, Motohashi K, Gabdulkhaev R, Tsukamoto Y, Kanemaru Y, Watanabe J, Ogura R, Okada M, Kurabe S, Okamoto K, Kakita A, Igarashi H, Fujii Y. SWI by 7T MR Imaging for the Microscopic Imaging Diagnosis of Astrocytic and Oligodendroglial Tumors. AJNR Am J Neuroradiol 2022; 43:1575-1581. [PMID: 36229164 PMCID: PMC9731250 DOI: 10.3174/ajnr.a7666] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 08/21/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE Despite advances in molecular imaging, preoperative diagnosis of astrocytomas and oligodendrogliomas can be challenging. In the present study, we assessed whether 7T SWI can be used to distinguish astrocytomas and oligodendrogliomas and whether malignant grading of gliomas is possible. MATERIALS AND METHODS 7T SWI was performed on 21 patients with gliomas before surgery with optimization for sharp visualization of the corticomedullary junction. Scoring for cortical thickening and displacement of medullary vessels, characteristic of oligodendroglial tumors, and cortical tapering, characteristic of astrocytic tumors, was performed. Additionally, characteristics of malignancy, including thickening of the medullary veins, the presence of microbleeds, and/or necrosis were scored. RESULTS Scoring for oligodendroglial (highest possible score, +3) and astrocytic (lowest score possible, -3) characteristics yielded a significant difference between astrocytomas and oligodendrogliomas (mean, -1.93 versus +1.71, P < .01). Scoring for malignancy was significantly different among the World Health Organization grade II (n = 10), grade III (n = 4), and grade IV (n = 7) tumors (mean, 0.20 versus 1.38 versus 2.79). Cortical thickening was observed significantly more frequently in oligodendrogliomas (P < .02), with a sensitivity of 71.4% and specificity of 85.7%; observation of tapering of the cortex was higher in astrocytomas (P < .01) with a sensitivity of 85.7% and specificity of 100%. CONCLUSIONS Visualization of the corticomedullary junction by 7T SWI was useful in distinguishing astrocytomas and oligodendrogliomas. Observation of tapering of the cortex was most sensitive and specific for diagnosing astrocytomas. Reliably predicting malignant grade was also possible by 7T SWI.
Collapse
Affiliation(s)
- M Natsumeda
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - H Matsuzawa
- Center for Integrated Human Brain Science (H.M., M.W., H.I.)
| | - M Watanabe
- Center for Integrated Human Brain Science (H.M., M.W., H.I.)
| | - K Motohashi
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | | | - Y Tsukamoto
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - Y Kanemaru
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - J Watanabe
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - R Ogura
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - M Okada
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - S Kurabe
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| | - K Okamoto
- Department of Translational Research (K.O.), Brain Research Institute, Niigata University, Niigata, Japan
| | - A Kakita
- Department of Pathology (R.G., A.K.)
| | - H Igarashi
- Center for Integrated Human Brain Science (H.M., M.W., H.I.)
| | - Y Fujii
- From the Department of Neurosurgery (M.N., K.M., Y.T., Y.K., J.W., R.O., M.O., S.K., Y.F.)
| |
Collapse
|
33
|
Hara ES, Nagaoka N, Okada M, Nakano T, Matsumoto T. Distinct Morphologies of Bone Apatite Clusters in Endochondral and Intramembranous Ossification. Adv Biol (Weinh) 2022; 6:e2200076. [PMID: 35859256 DOI: 10.1002/adbi.202200076] [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: 03/18/2022] [Revised: 06/27/2022] [Indexed: 01/28/2023]
Abstract
Bone apatite crystals grow in clusters, but the microstructure of these clusters is unknown. This study compares the structural and compositional differences between bone apatite clusters formed in intramembranous (IO) and endochondral ossification (EO). Calvaria (IO) and femurs (EO) are isolated from mice at embryonic days (E) 14.5 to 15.5 and post-natal days (P) 6 to 7, respectively. Results show that the initially formed bone apatite clusters in EO (≅1.2 µm2 ) are >10 times larger than those in IO (≅0.1 µm2 ), without significant changes in ion composition. In IO (E14.5 calvarium), early minerals are formed inside matrix vesicles (MVs). In contrast, in EO (P6 femur epiphysis), no MVs are observed, and chondrocyte-derived plasma membrane nanofragments (PMNFs) are the nucleation site for mineralization. Apatite cluster size difference is linked with the different nucleation sites. Moreover, an alkaline pH and slow P supply into a Ca-rich microenvironment are suggested to facilitate apatite cluster growth, as demonstrated in a biomimetic mineralization system. Together, the results reveal for the first time the distinct and exquisite microstructures of bone apatite clusters in IO and EO, and provide insightful inspirations for the design of more efficient materials for bone tissue engineering and repair.
Collapse
Affiliation(s)
- Emilio Satoshi Hara
- Department of Biomaterials Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8525, Japan
| | - Noriyuki Nagaoka
- Dental School, Okayama University, Advanced Research Center for Oral and Craniofacial Sciences, Okayama, 700-8525, Japan
| | - Masahiro Okada
- Department of Biomaterials Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8525, Japan
| | - Takayoshi Nakano
- Division of Materials and Manufacturing Science Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita-Shi, Osaka, 565-0871, Japan
| | - Takuya Matsumoto
- Department of Biomaterials Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, 700-8525, Japan
| |
Collapse
|
34
|
Aibara S, Okada M, Tanaka‐Nishikubo K, Asayama R, Sato E, Sei H, Aoishi K, Takagi T, Teraoka M, Mukai N, Konishi S, Okita M, Ogawa S, Annen S, Ohshita M, Matsumoto H, Murata S, Harima Y, Kikuchi S, Takeba J, Sato N, Hato N. Laryngeal complications after endotracheal intubation and prone positioning in patients with coronavirus disease 2019. Laryngoscope Investig Otolaryngol 2022; 7:1909-1914. [PMID: 36544958 PMCID: PMC9764797 DOI: 10.1002/lio2.874] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/13/2022] [Accepted: 07/05/2022] [Indexed: 12/24/2022] Open
Abstract
Objectives Laryngeal complications have been reported after endotracheal intubation and prone positioning in patients with critical coronavirus disease 2019 (COVID-19), but their association is unclear. In this study, we investigated the rate of laryngeal complications in patients with COVID-19 compared to an alternative condition (control group). Methods We retrospectively analyzed the data of 40 patients who underwent endotracheal intubation for either COVID-19 or an alternative condition (control group). Data on age, sex, body mass index (BMI), cardiovascular disease (CVD) risk factors, use of prone therapy, duration of endotracheal intubation, and duration from extubation/tracheostomy to laryngeal evaluation were collected from medical records. Results There were no significant differences in BMI, frequency of CVD risk factors, duration of endotracheal intubation, or duration from extubation/tracheostomy to laryngeal evaluation between the two groups. In the COVID-19 group, all patients adopted the prone position. In comparison, only one patient in the control group adopted the prone position. Significant differences were observed between the two groups regarding the incidence of vocal fold immobility and laryngeal granuloma. Conclusion Laryngeal complications were more common in the COVID-19 group than in the control group. Prone positioning may be a risk factor for these complications. Level of Evidence 4.
Collapse
Affiliation(s)
- Shiori Aibara
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Masahiro Okada
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Kaori Tanaka‐Nishikubo
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Rie Asayama
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Eriko Sato
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Hirofumi Sei
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Kunihide Aoishi
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Taro Takagi
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Masato Teraoka
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| | - Naoki Mukai
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Saki Konishi
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Mitsuo Okita
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Siro Ogawa
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Suguru Annen
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Muneaki Ohshita
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Hironori Matsumoto
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Satoru Murata
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Yutaka Harima
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Satoshi Kikuchi
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Jun Takeba
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Norio Sato
- Department of Emergency and Critical Care MedicineEhime University Graduate School of MedicineToonJapan
| | - Naohito Hato
- Department of Otolaryngology, Head and Neck SurgeryEhime University Graduate School of MedicineToonJapan
| |
Collapse
|
35
|
Oka T, Koyama Y, Inoue K, Tanaka N, Tanaka K, Hirao Y, Okada M, Okamura A, Iwakura K, Fujii K, Masuda M, Watanabe T, Sunaga A, Hikoso S, Sakata Y. Extensive ablation strategy for persistent atrial fibrillation impairs left atrial function but reduces recurrence rate. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.462] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
In catheter ablation for persistent atrial fibrillation (AF), extensive ablation strategy, such as linear ablation and/or complex fractionated atrial electrogram (CFAE) ablation in addition to pulmonary vein isolation (PVI-plus), might impair left atrial function more severely than PVI-alone strategy.
Purpose
The aim of this study is to investigate the impact of extensive ablation strategy on LA function and assess the relationship between post-ablation LA function and recurrence.
Methods
This study is a post-hoc subanalysis of the EARNEST-PVI randomized controlled trial, which investigated the efficacy of the PVI-alone strategy in comparison with PVI-plus strategy for persistent AF. From the 497 participants of EARNEST-PVI trial, we enrolled 191 patients with full datasets of pre- and post-ablation cardiac computed tomography (CT) at our Hospital. Patients were divided into PVI-alone and PVI-plus groups. Within one month before and 3 months after ablation, LA volume index (LAVI) and LA emptying fraction (LAEF) were calculated by using the Comprehensive Cardiac Analysis software on the Extended Brilliance Workspace. We assessed i) post-ablation LA function, ii) AF/atrial tachycardia (AT) -free rate after single and final session, and iii) relationship between post-ablation LAEF and ablation success in each group.
Results
The indices of baseline LA remodeling were not different between PVI-alone (N=96) and PVI-plus groups (N=95) [LAVI: 71.4 (57.8, 82.0) vs. 68.7 (61.0, 78.1), P=0.92, LAEF: 13.7 (10.0, 17.4) vs. 13.0 (10.0, 16.9), PVI-alone vs. PVI-plus, P=0.78]. In overall patients, post-ablation LAEF did not differ among them [34.4 (26.1, 40.7) vs. 31.6 (26.0, 37.4), P=0.13]. In the analysis of patients showing sinus rhythm during the CT study, LAEF was significantly higher in PVI-alone (N=87) than in PVI-plus group (N=93) [35.7 (29.0, 41.0) vs. 31.7 (26.1, 37.5), P=0.011] (Figure 1A). AF/AT-free survival rate during median follow-up of 44 months was not different after first session (63.5% vs. 68.4%, P=0.33), while PVI-plus had a tendency towards higher success rate after final session (72.9% vs. 84.2%, P=0.053) (Figure 2). In receiver operating characteristics analysis for recurrence after first session, post-ablation decreased LAEF had significantly related to recurrence after PVI-alone (AUC: 0.733, P<0.0001), but not after PVI-plus (AUC: 0.567, P=0.31) (Figure 1B, C).
Conclusion
Compared with PVI-alone strategy, PVI-plus strategy damaged LA function more severely, but tended to be related to higher success rate. Post-ablation LA function was related to recurrence in PVI-alone, but not in PVI-plus. Extensive ablation might have additional anti-arrhythmic effect regardless of iatrogenic myocardial damage. Myocardial injury by extensive ablation may less attribute to recurrence than intrinsic damage of LA.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- T Oka
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine , Suita , Japan
| | - Y Koyama
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - K Inoue
- National Hospital Organization Osaka National Hospital , Osaka , Japan
| | - N Tanaka
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - K Tanaka
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - Y Hirao
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - M Okada
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - A Okamura
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - K Iwakura
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - K Fujii
- Sakurabashi-Watanabe Hospital, Cardiovasucular Division , Osaka , Japan
| | - M Masuda
- Kansai Rosai Hospital , Amagasaki , Japan
| | - T Watanabe
- Osaka General Medical Center , Osaka , Japan
| | - A Sunaga
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine , Suita , Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine , Suita , Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine , Suita , Japan
| |
Collapse
|
36
|
Iwakura K, Onishi T, Okamura A, Koyama Y, Hirao Y, Tanaka K, Iwamoto M, Tanaka N, Okada M, Watanabe H, Nakatani D, Hikoso S, Sakata Y, Sakata Y. Development of the new risk score to predict occurrence of atrial fibrillation early after acute myocardial infarction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.509] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
New onset of atrial fibrillation (AF) is associated with adverse short- and long-term outcomes after acute myocardial infarction (AMI), and its prediction is relevant for the risk stratification in patients with AMI. Although several risk scores were developed for AF in the general population, there is no established risk score for AF occurrence after AMI.
Purpose
To develop a risk score to predict occurrence of AF early after AMI.
Methods
We enrolled consecutive 751 patients with AMI who admitted to our hospital between April 2006 and September 2012 for the present study. New occurrence of AF was defined as AF detected during hospital stay in a patient showing normal regular sinus rhythm at admission. Parameters relevant to the occurrence of AF was selected from the clinical characteristics, physical status and blood test data at admission, and peak CK/CK-MB, by stepwise logistic regression analysis. We constructed a risk score model to predict the new occurrence of AF, using selected parameters and their logistic regression coefficients. C-statistics was determined by constructing a receiver operating characteristic curve to evaluate the accuracy of the risk score for prediction of AF occurrence.
Results
We excluded 48 patients (6.4%) who had AF at admission, and 208 patients without sufficient data at admission, and thus, the study group consisted of 459 patients (age; 65±13 years, male gender; 79.6%). New AF occurrence was observed in 72 patients (14.5%). The following 7 parameters was selected as parameters related with AF (as p<0.1); Inferior/posterior AMI, use of β blockers, use of diuretics, single vessel disease, absence of reperfusion therapy, systolic blood pressure (sBP) at admission, and smoking. One point was given to sBP>128mmHg, 2 points to absence of reperfusion, and one point to other parameters. Sum of these points was calculated as the AF risk score (Table 1). AF occurred in 27.1% of patients with ≥5 points whereas it was observed 5.2% of those with <5 points. C-statistics of the risk score was 0.75 (95% CI 0.68–0.83).
Conclusion
We developed a novel risk score to estimate the risk of AF occurrence early after AMI, which can be a useful tool for the risk stratification after AMI.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- K Iwakura
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - T Onishi
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - A Okamura
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - Y Koyama
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - Y Hirao
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - K Tanaka
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - M Iwamoto
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - N Tanaka
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - M Okada
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - H Watanabe
- Sakurabashi-Watanabe Hospital , Osaka , Japan
| | - D Nakatani
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine , Suita , Japan
| | - S Hikoso
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine , Suita , Japan
| | - Y Sakata
- National Cerebral and Cardiovascular Center Hospital, Department of Clinical Medicine and Development , Osaka , Japan
| | - Y Sakata
- Osaka University Graduate School of Medicine, Department of Cardiovascular Medicine , Suita , Japan
| |
Collapse
|
37
|
Suetani Y, Iida Y, Hirose K, Shichijo K, Yamamoto S, Fukui T, Kuramoto M, Arita Y, Saeki H, Miyoshi M, Okada M, Ogasawara N. Urine osmolality predicts worsening renal function and poor prognosis in acute decompensated heart failure. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1088] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background/Purpose
Worsening renal function (WRF) can sometimes occur in the patients with acute decompensated heart failure (ADHF) and increase the risk of morbidity and mortality (1). In a previous study, it was reported that fractional excretion of sodium (FENa) reflects net sodium reabsorption from nephron segments and predicts WRF during treating ADHF (2). On the other hand, recently the new drugs which approach urine concentration mechanism and affect urine osmolality (U-OSM), such as tolvaptan and sodium-glucose cotransporter-2 inhibitor, have begun to be widely used as treatment of heart failure. Thus, we focused on U-OSM, which reflects not only sodium handling but also water excretion controlled by the collecting duct, and evaluated the association between WRF and U-OSM. Moreover, previous studies have demonstrated that FENa, fractional excretion of urea nitrogen and transtubular potassium concentration gradient are markers for long-term prognosis in patients with ADHF (3–5). Therefore, we also studied whether U-OSM can predict prognosis in ADHF.
Methods
A total of 157 patients admitted to our hospital because of a primary diagnosis of ADHF from February 2020 through July 2021 were retrospectively reviewed. U-OSM in the spot urinary samples were examined within 72 hours after admission. U-OSM was calculated based on the following validated formula (6): U-OSM = 1.07 × {2 × [urine sodium (mEq/L)] + [urine urea nitrogen (mg/dL)]/2.8 + [urine creatinine (mg/dl)] × 2/3} + 16.2. The primary outcome was the occurrence of WRF during hospitalization. WRF was defined as increased serum creatinine ≥0.3 mg/dL from baseline (7). The secondary outcome was the occurrence of ADHF readmission and all-cause death within 180 days after discharge.
Results
Primary Outcome. WRF developed in 46% of all patients. In the patients that developed WRF during hospitalization, U-OSM was significantly lower than in the patients without WRF (366±106 mOsm/L versus 430±128 mOsm/L; P<0.001). Receiver operating characteristic curve analysis revealed the optimal cutoff values of U-OSM was 403 mOsm/L (AUC 0.64; 95% CI: 0.56–0.72; P<0.001) to predict the WRF (Figure 1). On multivariable logistic regression analysis, U-OSM (OR, 1.99, 95% CI: 1.27–3.12; p=0.003) and serum creatinine (OR, 1.00, 95% CI: 0.99–1.00; P=0.009) were independent predictors of WRF.
Secondary Outcome. There were 34 patients (22%) readmitted and 9 patients (6%) died within 180 days after discharge. ROC curve analysis revealed the optimal cutoff values of U-OSM as 349 mOsm/L (C-statistic 0.74; 95% CI: 0.65–0.83; P<0.001) to predict ADHF readmission and all-cause death within 180 days (Figure 2A). On Kaplan-Meier analysis, the secondary outcome was significantly higher in patients with U-OSM<349 mOsm/L (u-OSM≥349, 57%, U-OSM<349, 43%; HR, 0.99; 95% CI: 0.99–1.00, P<0.001) (Figure 2B).
Conclusion
U-OSM on admission may be a predictor of WRF and a prognostic marker in ADHF patients.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- Y Suetani
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - Y Iida
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - K Hirose
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - K Shichijo
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - S Yamamoto
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - T Fukui
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - M Kuramoto
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - Y Arita
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - H Saeki
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - M Miyoshi
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - M Okada
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| | - N Ogasawara
- Japan Community Healthcare Organization Osaka Hospital , Osaka , Japan
| |
Collapse
|
38
|
Tanaka N, Okada M, Tanaka K, Harada S, Kawahira M, Hirao Y, Onishi T, Koyama Y, Fujii K, Watanabe H, Okamura A, Iwakura K. Untreated sleep apnea and left atrial dilatation in patients with atrial fibrillation prior to catheter ablation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.513] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Sleep apnea and left atrial dilatation are both risk factors for an arrhythmia recurrence after catheter ablation (CA) of atrial fibrillation (AF). Negative intrathoracic pressure fluctuations during an obstructive apnea episode may cause the left atrium to distend and stretch its wall. Whether sleep apnea is associated with left atrial dilatation in patients receiving CA of AF remains unknown.
Purpose
We sought to elucidate whether moderate or severe untreated sleep apnea was associated with left atrial dilatation in patients with AF before CA.
Methods
This study was conducted under a retrospective, single-center, observational design. The data were derived from screening tests for sleep apnea, which were routinely performed in patients scheduled to receive CA of AF in our institution. After excluding patients who were already diagnosed with sleep apnea, we enrolled 1265 consecutive patients (age 65±11 years, 27.8% females, and 46.2% of non-paroxysmal AF) who underwent both home sleep apnea testing and multidetector computed tomography (MDCT) before the CA of AF. The severity of the sleep apnea was evaluated by the apnea-hypopnea index (AHI) using a watch-type peripheral arterial tonometry. Left atrial dilatation was evaluated by the left atrial maximum volume (LA max V) using 256-slice MDCT.
Results
The age was 65±11 years, 27.8% were females, and 46.2% had non-paroxysmal AF. The mean AHI was 20.3±15.3 and LA max V 105±34 ml (R2=0.075, p<0.0001). LA dilatation was defined by larger than mean LA max V (LA max V≥105 ml). We examined an LA max V≥105 ml as a predictor. After an adjustment by an advanced age (≥65 years), non-paroxysmal AF, male sex, obesity, hypertension, and congestive heart failure, all of which were significant predictors of an LA max V≥105ml in the univariate analysis, moderate or severe sleep apnea (AHI≥15) was a significant predictor of an LA max V≥105 ml (odds ratio 1.63, 95% confidence interval 1.24–2.14, p=0.0005).
Conclusion
Among the patients scheduled to receive catheter ablation of AF, moderate or severe sleep apnea was independently associated with left atrial dilatation.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- N Tanaka
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - M Okada
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - K Tanaka
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - S Harada
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - M Kawahira
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - Y Hirao
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - T Onishi
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - Y Koyama
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - K Fujii
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - H Watanabe
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - A Okamura
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - K Iwakura
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| |
Collapse
|
39
|
Tanaka N, Inoue K, Hirao Y, Koyama Y, Okamura A, Iwakura K, Okada M, Tanaka K, Kobori A, Kaitani K, Morimoto T, Morishima I, Kusano K, Kimura T, Shizuta S. Sex differences in terms of recurrent atrial fibrillation after catheter ablation according to the history of heart failure: insights from the Kansai Plus Atrial Fibrillation (KPAF) registry. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.608] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
There are significant differences in the prevalence and prognosis of cardiovascular diseases between male and female. We previously reported that catheter ablation (CA) of atrial fibrillation (AF) was less effective in female than male, but whether their history of heart failure influence the recurrence after CA of AF remains still unknown.
Purpose
We sought to clarify sex differences in terms of AF recurrence after RFCA of AF according to the history of heart failure.
Methods
We conducted a large-scale, prospective, multicenter, observational study (Kansai Plus Atrial Fibrillation Registry). We enrolled 5010 consecutive patients who underwent an initial RFCA of AF at 26 centers (64±10 years; 1369 [27.3%] females; non-paroxysmal AF, 35.7%). The median follow-up duration was 2.9 years.
Results
Fourteen % of female had a history of heart failure prior to CA, while 12.8% of male had a history of heart failure at baseline (p=0.29). The 3-year cumulative incidence of AF recurrence after a single procedure was 43.3% in female and 39.0% in male (log rank P=0.0046). In patients with the history of heart failure, AF recurrence rates were 42.2% in female and 45.8% in male (log rank P=0.51). On the other hand, in patients without history of heart failure, more females experienced AF recurrence (female vs. male, 43.5% vs. 38.0%, log rank P=0.001).
The rate of AF recurrence after multiple procedures was higher in female (24.2% vs. 19.6%, log rank P<0.0001). AF recurrence rates were similar between sexes in patients with history of heart failure (female vs. male, 26.0% vs. 26.7%, log rank P=0.86), while AF recurrence rates were higher in female without history of heart failure than those in male (females vs. males, 23.9% vs. 18.5%, log rank P<0.0001).
Conclusion
The Kansai Plus Atrial Fibrillation Registry revealed a distinct sex difference in terms of the AF recurrence after CA of AF. Females had higher recurrence rates compared with males in patients without history of heart failure, while recurrence rates were similar between sexes in patients with history of heart failure.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): Research Institute for Production Development in Kyoto, Japan.
Collapse
Affiliation(s)
- N Tanaka
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - K Inoue
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - Y Hirao
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - Y Koyama
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - A Okamura
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - K Iwakura
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - M Okada
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - K Tanaka
- Sakurabashi-Watanabe Hospital, Cardiovascular Center , Osaka , Japan
| | - A Kobori
- Kobe City Medical Center General Hospital , Kobe , Japan
| | - K Kaitani
- Japanese Red Cross Otsu Hospital , Otsu , Japan
| | - T Morimoto
- Hyogo Medical University , Nishinomiya , Japan
| | | | - K Kusano
- National Cerebral & Cardiovascular Center , Suita , Japan
| | - T Kimura
- Kyoto University Graduate School of Medicine , Kyoto , Japan
| | - S Shizuta
- Kyoto University Graduate School of Medicine , Kyoto , Japan
| |
Collapse
|
40
|
Fujinuma T, Takezawa T, Okada M, Hayashi Y, Amano Y, Lefor AK, Yamamoto H. Complete resection of residual rectal dysplasia in a patient with ulcerative colitis using the pocket-creation method. Endoscopy 2022; 54:E1072-E1073. [PMID: 36049760 PMCID: PMC9737441 DOI: 10.1055/a-1918-1639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Toshihiro Fujinuma
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Takahito Takezawa
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Masahiro Okada
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Yoshikazu Hayashi
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Yusuke Amano
- Department of Integrative Pathology, Jichi Medical University, Shimotsuke, Japan
| | | | - Hironori Yamamoto
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| |
Collapse
|
41
|
Shibuya Y, Okada M, Arita M, Hayashi Y, Kawata H, Lefor AK, Yamamoto H. Underwater endoscopic mucosal resection of colon hemangiomas compatible with the blue rubber bleb nevus syndrome, following endoscopic ultrasonography. Endoscopy 2022; 54:E1049-E1050. [PMID: 36007910 PMCID: PMC9737446 DOI: 10.1055/a-1915-4677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yuko Shibuya
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Masahiro Okada
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Munefumi Arita
- Department of Surgery, Jichi Medical University, Shimotsuke, Japan
| | - Yoshikazu Hayashi
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Hirotoshi Kawata
- Department of Diagnostic Pathology, Jichi Medical University, Shimotsuke, Japan
| | | | - Hironori Yamamoto
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| |
Collapse
|
42
|
Hirose S, Sudo N, Okada M, Natori N, Akimoto T, Hara M, Nakajima H. Intramedullary spinal cord abscess associated with right-to-left shunt via right superior vena cava draining into left atrium: A case report. Medicine (Baltimore) 2022; 101:e29740. [PMID: 35776990 PMCID: PMC9239619 DOI: 10.1097/md.0000000000029740] [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: 01/05/2023] Open
Abstract
RATIONALE Intramedullary spinal cord abscess (ISCA) is a rare but treatable bacterial infection of the central nervous system, and the etiology in no less than 40% of the cases is cryptogenic. Although a few cases of ISCA in individuals with a right-to-left shunt (RL shunt) have been reported, only few arguments focused on the association between RL shunt and ISCA have been provoked. The right superior vena cava (RSVC) draining into the left atrium (LA) is an uncommon systemic venous anomaly that results in an RL shunt, and this anomaly causes several types of neurological complication such as stroke or brain abscess. We report the first case of ISCA associated with RSVC-LA RL shunt. PATIENT CONCERNS A 36-year-old man developed progressive paraparesis, dysuria, and spontaneous pain in the lumbar region and lower extremities. Spinal magnetic resonance imaging revealed an intramedullary lesion extended from Th12 to L2 with ring-shaped gadolinium enhancement. Cerebrospinal fluid (CSF) study exhibited a marked pleocytosis, and CSF culture grew Streptococcus intermedius. Cardiovascular computed tomography angiography identified RSVC-LA RL shunt, which caused transient acute cardiac syndrome due to air embolus. DIAGNOSES The patient was diagnosed with ISCA associated with an RSVC-LA RL shunt. INTERVENTIONS The patient was treated with a combination of intravenous administration of meropenem and vancomycin in a daily dose of 6 and 2.5 g, respectively, followed by intravenous administration of ampicillin in a daily dose of 750 mg. The intravenous antibiotic therapy was continued for 37 days. OUTCOMES A favorable neurological outcome was obtained by the intravenous antibiotic therapy, and recurrence of infection was prevented by continuous oral antibiotic therapy for 18 months. LESSONS With a literature review of ISCA associated with RL shunt, we insist that screening for RSVC-LA is beneficial to patients who are diagnosed with cryptogenic ISCA as its identification leads to appropriate preventive therapy.
Collapse
Affiliation(s)
- Satoshi Hirose
- Division of Neurology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Naohiro Sudo
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Tokyo, Japan
| | - Naotoshi Natori
- Division of Neurology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Takayoshi Akimoto
- Division of Neurology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Makoto Hara
- Division of Neurology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
- *Correspondence: Makoto Hara, Division of Neurology, Department of medicine, Nihon University School of Medicine, 30-1, Oyaguchi-Kamicho, Itabashi-ku, Tokyo 173-8610, Japan (e-mail: )
| | - Hideto Nakajima
- Division of Neurology, Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan
| |
Collapse
|
43
|
Oku Y, Yagi N, Nishino M, Shinkawa T, Takata Y, Nagami S, Okada M. Swallowing Dynamics and Breathing-Swallowing Coordination Are Altered in Patients with Mild Cognitive Impairment. Dement Geriatr Cogn Disord 2022; 50:554-558. [PMID: 34937029 DOI: 10.1159/000520940] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 11/16/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Postinspiratory activity, which is essential for laryngeal closure during swallowing to prevent aspiration of food into the airways, is reduced in a mouse model of tauopathy. Therefore, we hypothesized that patients at the stage of mild cognitive impairment (MCI) exhibit alterations in swallowing dynamics and coordination between swallowing and breathing. METHODS We examined breathing-swallowing coordination in patients with MCI. Patients who scored ≥24 on the Mini-Mental State Examination and <26 on the Japanese version of the Montreal Cognitive Assessment were recruited at Sumoto Itsuki Hospital. Parameters associated with breathing-swallowing coordination were assessed using a combination of two sensors: a respiratory flow sensor and a piezoelectric sensor attached to the skin surface of the anterior neck. RESULTS Nineteen patients met the criteria for MCI; 16 of these patients (79.5 ± 9.1 years old) scored <3 on the 10-item Eating Assessment Tool and were enrolled in the study. Their data were compared with those of an age-matched elderly cohort (79.9 ± 2.9 years old). The frequencies of swallowing during inspiration and swallowing immediately followed by inspiration in patients with MCI were 6.9% and 9.6%, respectively; these frequencies were not significantly different from those of the age-matched elderly cohort. However, the timing of swallowing in the respiratory cycle was significantly delayed in the MCI patients, and both time from the onset to the peak of laryngeal elevation and the duration between the onset of rapid laryngeal elevation and the time when the larynx returned to the resting position were significantly lengthened in this group. CONCLUSION At the stage of MCI, breathing-swallowing coordination has already started to decline.
Collapse
Affiliation(s)
- Yoshitaka Oku
- Department of Physiology, Hyogo College of Medicine, Nishinomiya, Japan.,Department of Respiratory Medicine, Sumoto Itsuki Hospital, Sumoto, Japan
| | - Naomi Yagi
- Department of Physiology, Hyogo College of Medicine, Nishinomiya, Japan.,Department of Medical Engineering, Himeji Dokkyo University, Himeji, Japan
| | - Madoka Nishino
- Department of Rehabilitation, Sumoto Itsuki Hospital, Sumoto, Japan
| | | | - Yu Takata
- Department of Rehabilitation, Sumoto Itsuki Hospital, Sumoto, Japan
| | - Shinsuke Nagami
- Department of Speech Language Pathology and Audiology, Faculty of Rehabilitation, Kawasaki University of Medical Welfare, Kurashiki, Japan
| | - Masahiro Okada
- Department of Neurosurgery, Sumoto Itsuki Hospital, Sumoto, Japan
| |
Collapse
|
44
|
Nobori J, Miyake Y, Tanaka K, Senba H, Okada M, Takagi D, Teraoka M, Yamada H, Matsuura B, Hato N. Relationship between hearing loss and prevalence of depressive symptoms in Japan: baseline data from the Aidai Cohort Study in Yawatahama and Uchiko. Arch Gerontol Geriatr 2022; 102:104735. [DOI: 10.1016/j.archger.2022.104735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/12/2022] [Accepted: 05/17/2022] [Indexed: 12/15/2022]
|
45
|
Okada M, Numata K, Nihonmatsu H, Tomita K, Takeda A, Tago K, Hyodo T, Eriguchi T, Nakano M. Pathological Appearance of Focal Liver Reactions after Radiotherapy for Hepatocellular Carcinoma. Diagnostics (Basel) 2022; 12:1072. [PMID: 35626228 PMCID: PMC9139971 DOI: 10.3390/diagnostics12051072] [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: 04/07/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 11/30/2022] Open
Abstract
We studied five pathological specimens from five patients at 1.5, 3.0, 4.0, 13.5, and 14.0 months after radiotherapy for HCC. Four needle biopsies were obtained to investigate liver parenchyma of focal liver reaction (FLR) around treated HCC, when patients had newly developed HCC or local recurrence appeared in the liver. Liver resection was performed in one case where insufficient radiotherapy effect for HCC was suspected. In all patients, FLR was recognized as a hypervascular area around the HCC on enhanced CT and enhanced Gd-EOB-DTPA (EOB-MRI). Liver specimens were analyzed to assess the pathological characteristics of FLR. FLR was recognized as prolonged liver enhancement in enhanced CT and EOB-MRI. From pathological understanding, sinusoidal dilatation with degeneration and desquamation was caused by direct endothelial cell injury following radiotherapy. Hepatocytes and endothelium fell off, and so the portal tract came close, and hepatic arteries increase simultaneously, resulting in FLR around HCC after radiotherapy. In conclusion, the prolapse of hepatocytes and sinusoidal endothelium induced neovascularization of hepatic arteries due to the repair mechanisms; in addition, these prolapse may shorten the distance between each portal region and the hepatic arteries flowing through the portal region become more prominent in FLR.
Collapse
Affiliation(s)
- Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Tokyo, Japan;
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan; (K.N.); (H.N.)
| | - Kazushi Numata
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan; (K.N.); (H.N.)
| | - Hiromi Nihonmatsu
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan; (K.N.); (H.N.)
| | - Kengo Tomita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa-shi 359-8513, Saitama, Japan;
| | - Atsuya Takeda
- Radiation Oncology Center, Ofuna Chuo Hospital, 6-2-24, Ofuna, Kamakura 247-0056, Kanagawa, Japan; (A.T.); (T.E.)
| | - Kenichiro Tago
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Tokyo, Japan;
| | - Tomoko Hyodo
- Department of Radiology, Kindai University Faculty of Medicine, 377-2 Ohno-Higashi, Osaka-Sayama 589-8511, Osaka, Japan;
| | - Takahisa Eriguchi
- Radiation Oncology Center, Ofuna Chuo Hospital, 6-2-24, Ofuna, Kamakura 247-0056, Kanagawa, Japan; (A.T.); (T.E.)
| | - Masayuki Nakano
- Department of Pathology, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan;
| |
Collapse
|
46
|
Okada M, Shinozaki S, Ikeda E, Hayashi Y, Takezawa T, Fukuda H, Morikawa T, Kitamura M, Arita M, Nomura T, Sakamoto H, Sunada K, Fukushima N, Lefor AK, Yamamoto H. Underwater Endoscopic Mucosal Resection of Small Rectal Neuroendocrine Tumors. Front Med (Lausanne) 2022; 9:835013. [PMID: 35514753 PMCID: PMC9063479 DOI: 10.3389/fmed.2022.835013] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 03/28/2022] [Indexed: 11/13/2022] Open
Abstract
Background and Study Aims The resection strategy for rectal neuroendocrine tumors (NET) < 10 mm is not uniform. We compared the utility of underwater endoscopic mucosal resection (UEMR) to endoscopic submucosal resection with a ligation device (ESMR-L) to resect rectal NETs. Patients and Methods Patients with rectal NET < 10 mm treated with UEMR or ESMR-L were included. Their medical records were retrospectively reviewed. Results Thirty-two patients were divided into a UEMR group (n = 7) and an ESMR-L group (n = 25). Histopathological diagnosis of NET by biopsy was known before resection in 43% (3/7) in the UEMR group and 68% (17/25) in the ESMR-L group, (p = 0.379). UEMR was performed on an outpatient basis for all patients, and 92% of ESMR-L (23/25) were performed as inpatient procedures (p < 0.001). The procedure time was significantly shorter in the UEMR group than in the ESMR-L group [median (IQR), min, 6 (5–8) vs. 12 (9–14), p = 0.002]. En bloc resection and R0 resection rates were 100% in both groups. Pathological evaluations were predominantly NET G1 in both groups (UEMR: 7/7, 100% and ESMR-L: 23/25, 92%). Two patients in the ESMR-L group developed delayed bleeding, controlled by endoscopic hemostasis. Device costs were significantly higher in the ESMR-L group than the UEMR group by approximately US$180 [median (IQR), $90.45 (83.64–108.41) vs. $274.73 (265.86–292.45), P < 0.001]. Conclusion UEMR results in similar resection quality with shorter procedure time and lower costs compared to ESMR-L. We recommend UEMR for the resection of rectal NET < 10 mm.
Collapse
Affiliation(s)
- Masahiro Okada
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Satoshi Shinozaki
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
- Shinozaki Medical Clinic, Utsunomiya, Japan
| | - Eriko Ikeda
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
- Department of Diagnostic Pathology, Jichi Medical University, Shimotsuke, Japan
| | - Yoshikazu Hayashi
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
- *Correspondence: Yoshikazu Hayashi,
| | - Takahito Takezawa
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Hisashi Fukuda
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Takaaki Morikawa
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Masafumi Kitamura
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Munefumi Arita
- Department of Surgery, Jichi Medical University, Shimotsuke, Japan
| | - Tatsuma Nomura
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Hirotsugu Sakamoto
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Keijiro Sunada
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Noriyoshi Fukushima
- Department of Diagnostic Pathology, Jichi Medical University, Shimotsuke, Japan
| | | | - Hironori Yamamoto
- Division of Gastroenterology, Department of Medicine, Jichi Medical University, Shimotsuke, Japan
| |
Collapse
|
47
|
Okada M, Shimizu K, Fujii SI. Identification of Neoantigens in Cancer Cells as Targets for Immunotherapy. Int J Mol Sci 2022; 23:ijms23052594. [PMID: 35269735 PMCID: PMC8910406 DOI: 10.3390/ijms23052594] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/18/2022] [Accepted: 02/24/2022] [Indexed: 02/06/2023] Open
Abstract
The clinical benefits of immune checkpoint blockage (ICB) therapy have been widely reported. In patients with cancer, researchers have demonstrated the clinical potential of antitumor cytotoxic T cells that can be reinvigorated or enhanced by ICB. Compared to self-antigens, neoantigens derived from tumor somatic mutations are believed to be ideal immune targets in tumors. Candidate tumor neoantigens can be identified through immunogenomic or immunopeptidomic approaches. Identification of neoantigens has revealed several points of the clinical relevance. For instance, tumor mutation burden (TMB) may be an indicator of immunotherapy. In various cancers, mutation rates accompanying neoantigen loads may be indicative of immunotherapy. Furthermore, mismatch repair-deficient tumors can be eradicated by T cells in ICB treatment. Hence, immunotherapies using vaccines or adoptive T-cell transfer targeting neoantigens are potential innovative strategies. However, significant efforts are required to identify the optimal epitopes. In this review, we summarize the recent progress in the identification of neoantigens and discussed preclinical and clinical studies based on neoantigens. We also discuss the issues remaining to be addressed before clinical applications of these new therapeutic strategies can be materialized.
Collapse
Affiliation(s)
- Masahiro Okada
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; (M.O.); (K.S.)
| | - Kanako Shimizu
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; (M.O.); (K.S.)
| | - Shin-ichiro Fujii
- Laboratory for Immunotherapy, RIKEN Center for Integrative Medical Sciences, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; (M.O.); (K.S.)
- Program for Drug Discovery and Medical Technology Platforms, RIKEN, 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
- Correspondence: ; Tel.: +81-45-503-7062
| |
Collapse
|
48
|
Okada M, Okada K, Kakehashi M. Eating habit patterns may predict maximum occlusal force: A preliminary study. PLoS One 2022; 17:e0263647. [PMID: 35167601 PMCID: PMC8846518 DOI: 10.1371/journal.pone.0263647] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/24/2022] [Indexed: 11/18/2022] Open
Abstract
Masticatory function is thought to be related to various eating habits, but it is difficult to evaluate overall masticatory function by assessing complex eating habits. Maximum occlusal force is an important indicator of masticatory function that is affected by age and sex. This preliminary study focused on the maximum occlusal force of young women and their eating habits, excluding food and nutritional factors, and investigated whether individual eating habits and eating habit patterns predict maximum occlusal force. We measured the maximum occlusal force for the whole dentition of 53 healthy young women before they ate lunch. The participants also completed a 12-item questionnaire about their eating habits. Scores were determined from the relationship between each item and increased maximum occlusal force. We found a significant but weak relationship between maximum occlusal force and some questions. The total questionnaire scores for the participants’ eating habits showed an almost normal distribution (mean ± standard deviation: 22.7 ± 2.6, median: 23.0, mode: 23.0, range of total scores: 17–28). The accuracy of the linear regression between the total scores for eating habits and maximum occlusal force was high but not perfect (β: standardized regression coefficient = 0.527, P < 0.001). Although further research is needed, our findings confirm that eating habit patterns are significantly associated with maximum occlusal force and may help predict occlusal force. Our results provide important information about eating patterns in humans.
Collapse
Affiliation(s)
- Masahiro Okada
- Department of Food and Dietetics, Hiroshima Bunka Gakuen Two-Year College, Hiroshima, Japan
- * E-mail:
| | - Kosuke Okada
- Department of Internal Medicine COOP Saeki Hospital, Yahata-higashi, Saeki-ku, Hiroshima, Japan
| | - Masayuki Kakehashi
- Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| |
Collapse
|
49
|
Irie M, Okada M, Yoshimoto A, Maruo Y, Nishigawa G, Matsumoto T. Shear bond strength of resin cement on moist dentin and its relation to the flexural strength of resin cement. Dent Mater J 2022; 41:429-439. [PMID: 35135941 DOI: 10.4012/dmj.2021-278] [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] [Indexed: 11/23/2022]
Abstract
We sought to compare the bond strength of resin cement on moist dentin to that on dry dentin, and determine the relationship between the bond strength and flexural strength of resin cement. The water content of the moist and dry dentins was estimated using infrared spectroscopy. Four adhesive and three self-adhesive resin cements were used. At three times of immediately, after one-day storage, and after 20,000 thermocycles (TC 20k), the shear bond strengths were measured. For all resin cements, both the shear bond strength and the flexural strength were the lowest immediately after setting; however, after one day of water storage or TC 20k, these resin cements had the highest values. Regardless of the condition of the dentin surface upon shear bond strength, the flexural strength of each resin cement was correlated with the shear bond strength of the dentin surface.
Collapse
Affiliation(s)
- Masao Irie
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science
| | - Masahiro Okada
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science
| | - Akio Yoshimoto
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science.,Yoshimoto Dental Office
| | - Yukinori Maruo
- Department of Prosthodontics, Okayama University Hospital
| | - Goro Nishigawa
- Department of Prosthodontics, Okayama University Hospital
| | - Takuya Matsumoto
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science
| |
Collapse
|
50
|
Sakaguchi M, Maebayashi T, Aizawa T, Ishibashi N, Okada M. Association between unintentional splenic radiation and lymphopenia and high neutrophil/lymphocyte ratio after radiotherapy in patients with esophageal cancer. Transl Cancer Res 2022; 10:5076-5084. [PMID: 35116359 PMCID: PMC8798520 DOI: 10.21037/tcr-21-1765] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 11/12/2021] [Indexed: 12/24/2022]
Abstract
Background Unintentional irradiation of the spleen may reduce absolute lymphocyte count (ALC), which can affect tumor immunity. Therefore, in the present study, we evaluated spleen dose-volume parameters associated with ALC and neutrophil/lymphocyte ratio (NLR) in patients with esophageal cancer. Methods This retrospective study evaluated patients who were diagnosed with stage I–IV esophageal cancer and who received radiotherapy at Nihon University Itabashi Hospital between January 2015 and March 2020. Spleen V5, V10, V20, and V30 and mean spleen dose, which are dose-volume histogram parameters correlated with ALC and NLR, were analyzed. Results In total, 89 esophageal cancer patients with a median age of 72 years (range, 51–92 years) were included in this research. Results showed that spleen V5, V10, and V20 and mean splenic dose were significantly correlated with a low ALC. Meanwhile, a significant association was observed between spleen V5 and V10 and a high NLR (P<0.05). In the linear regression analysis, spleen V5 and V10 were remarkably associated with a low ALC (P=0.006 and 0.008). Further, a correlation was noted between spleen V5 and a high NLR (P=0.019). Spleen V5 and V10 were remarkably associated with greater than grade 3 lymphopenia (P=0.024 and P=0.031). Conclusions A correlation was observed between the irradiated volume of the spleen and ALC and NLR in patients with esophageal cancer. Furthermore, the spleen should be regarded as a high-risk organ, and the use of techniques in reducing spleen V5, V10 for the preservation of tumor immunity may be beneficial.
Collapse
Affiliation(s)
- Masakuni Sakaguchi
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Toshiya Maebayashi
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Takuya Aizawa
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Naoya Ishibashi
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| |
Collapse
|