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Xia L, Kano F, Hashimoto N, Liu Y, Khurel-Ochir T, Ogasawara N, Ding C, Xu Y, Hibi H, Iwasaki T, Tanaka E, Yamamoto A. Conditioned Medium From Stem Cells of Human Exfoliated Deciduous Teeth Alleviates Mouse Osteoarthritis by Inducing sFRP1-Expressing M2 Macrophages. Stem Cells Transl Med 2024; 13:399-413. [PMID: 38366885 PMCID: PMC11016837 DOI: 10.1093/stcltm/szae006] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 01/11/2024] [Indexed: 02/18/2024] Open
Abstract
Intravenous administration of conditioned medium from stem cells of human exfoliated deciduous teeth (SHED-CM) regenerates mechanically injured osteochondral tissues in mouse temporomandibular joint osteoarthritis (TMJOA). However, the underlying therapeutic mechanisms remain unclear. Here, we showed that SHED-CM alleviated injured TMJ by inducing anti-inflammatory M2 macrophages in the synovium. Depletion of M2 by Mannosylated Clodrosome abolished the osteochondral repair activities of SHED-CM. Administration of CM from M2-induced by SHED-CM (M2-CM) effectively ameliorated mouse TMJOA by inhibiting chondrocyte inflammation and matrix degradation while enhancing chondrocyte proliferation and matrix formation. Notably, in vitro, M2-CM directly suppressed the catabolic activities while enhancing the anabolic activities of interleukin-1β-stimulated mouse primary chondrocytes. M2-CM also inhibited receptor activator of nuclear factor NF-κB ligand-induced osteoclastogenesis in RAW264.7 cells. Secretome analysis of M2-CM and M0-CM revealed that 5 proteins related to anti-inflammation and/or osteochondrogenesis were enriched in M2-CM. Of these proteins, the Wnt signal antagonist, secreted frizzled-related protein 1 (sFRP1), was the most abundant and played an essential role in the shift to anabolic chondrocytes, suggesting that M2 ameliorated TMJOA partly through sFRP1. This study suggests that secretome from SHED exerted remarkable osteochondral regeneration activities in TMJOA through the induction of sFRP1-expressing tissue-repair M2 macrophages.
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Affiliation(s)
- Linze Xia
- Department of Tissue Regeneration, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Fumiya Kano
- Department of Tissue Regeneration, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Noboru Hashimoto
- Department of Tissue Regeneration, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yao Liu
- Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, People’s Republic of China
| | - Tsendsuren Khurel-Ochir
- Department of Orthodontics, School of Dentistry, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Naoko Ogasawara
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Cheng Ding
- Department of Tissue Regeneration, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yang Xu
- Department of Tissue Regeneration, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hideharu Hibi
- Department of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Eiji Tanaka
- Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Akihito Yamamoto
- Department of Tissue Regeneration, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Sakoda-Iwata R, Iwasaki T, Tsujii T, Hisagai S, Oku Y, Ban Y, Sato H, Ishii H, Kanomi R, Yamasaki Y. Does rapid maxillary expansion improve nasal airway obstruction? A computer fluid dynamics study in patients with nasal mucosa hypertrophy and obstructive adenoids. Am J Orthod Dentofacial Orthop 2023:S0889-5406(23)00228-7. [PMID: 37191595 DOI: 10.1016/j.ajodo.2023.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 04/01/2023] [Accepted: 04/01/2023] [Indexed: 05/17/2023]
Abstract
INTRODUCTION Rapid maxillary expansion (RME) expands the maxillary dentition laterally and improves nasal airway obstruction. However, the incidence of nasal airway obstruction improvement after RME is approximately 60%. This study aimed to clarify the beneficial effects of RME on nasal airway obstruction in specific pathologic nasal airway diseases (nasal mucosa hypertrophy and obstructive adenoids) using computer fluid dynamics. METHODS Sixty subjects (21 boys; mean age 9.1 years) were divided into 3 groups according to their nasal airway condition (control, nasal mucosa hypertrophy, and obstructive adenoids), and those requiring RME had cone-beam computed tomography images taken before and after RME. These data were used to evaluate the nasal airway ventilation condition (pressure) using computer fluid dynamics and measure the cross-sectional area of the nasal airway. RESULTS The cross-sectional area of the nasal airway significantly increased after RME in all 3 groups. The pressures in the control and nasal mucosa groups significantly reduced after RME but did not change significantly in the adenoid group. The incidence of improvement in nasal airway obstruction in the control, nasal mucosa, and adenoid groups was 90.0%, 31.6%, and 23.1%, respectively. CONCLUSIONS The incidence of improvement in nasal airway obstruction after RME depends on the nasal airway condition (nasal mucosa hypertrophy and obstructive adenoids). In patients with nonpathologic nasal airway conditions, the obstruction may be sufficiently improved with RME. Furthermore, to some extent, RME may be effective in treating nasal mucosa hypertrophy. However, because of obstructive adenoids, RME was ineffective in patients with nasal airway obstruction.
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Affiliation(s)
- Rina Sakoda-Iwata
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan.
| | - Toshiya Tsujii
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Soujiro Hisagai
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yoichiro Oku
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yuusuke Ban
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Hideo Sato
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | | | | | - Youichi Yamasaki
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Narwidina A, Miyazaki A, Iwata K, Kurogoushi R, Sugimoto A, Kudo Y, Kawarabayashi K, Yamakawa Y, Akazawa Y, Kitamura T, Nakagawa H, Yamaguchi-Ueda K, Hasegawa T, Yoshizaki K, Fukumoto S, Yamamoto A, Ishimaru N, Iwasaki T, Iwamoto T. Iroquois homeobox 3 regulates odontoblast proliferation and differentiation mediated by Wnt5a expression. Biochem Biophys Res Commun 2023; 650:47-54. [PMID: 36773339 DOI: 10.1016/j.bbrc.2023.02.004] [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: 12/21/2022] [Accepted: 02/02/2023] [Indexed: 02/09/2023]
Abstract
Iroquois homeobox (Irx) genes are TALE-class homeobox genes that are evolutionarily conserved across species and have multiple critical cellular functions in fundamental tissue development processes. Previous studies have shown that Irxs genes are expressed during tooth development. However, the precise roles of genes in teeth remain unclear. Here, we demonstrated for the first time that Irx3 is an essential molecule for the proliferation and differentiation of odontoblasts. Using cDNA synthesized from postnatal day 1 (P1) tooth germs, we examined the expression of all Irx genes (Irx1-Irx6) by RT-PCR and found that all genes except Irx4 were expressed in the tooth tissue. Irx1-Irx3 a were expressed in the dental epithelial cell line M3H1 cells, while Irx3 and Irx5 were expressed in the dental mesenchymal cell line mDP cells. Only Irx3 was expressed in both undifferentiated cell lines. Immunostaining also revealed the presence of IRX3 in the dental epithelial cells and mesenchymal condensation. Inhibition of endogenous Irx3 by siRNA blocks the proliferation and differentiation of mDP cells. Wnt3a, Wnt5a, and Bmp4 are factors involved in odontoblast differentiation and were highly expressed in mDP cells by quantitative PCR analysis. Interestingly, the expression of Wnt5a (but not Wnt3a or Bmp4) was suppressed by Irx3 siRNA. These results suggest that Irx3 plays an essential role in part through the regulation of Wnt5a expression during odontoblast proliferation and differentiation.
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Affiliation(s)
- Anrizandy Narwidina
- Department of Pediatric Dentistry, Graduate School of Oral Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan; Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Aya Miyazaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Kokoro Iwata
- Department of Pediatric Dentistry / Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8549, Japan
| | - Rika Kurogoushi
- Department of Pediatric Dentistry / Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8549, Japan
| | - Asuna Sugimoto
- Department of Pediatric Dentistry / Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8549, Japan
| | - Yasusei Kudo
- Department of Oral Bioscience, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Keita Kawarabayashi
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Yoshihito Yamakawa
- Department of Pediatric Dentistry, Graduate School of Oral Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan; Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Yuki Akazawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Takamasa Kitamura
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Hiroshi Nakagawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Kimiko Yamaguchi-Ueda
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Tomokazu Hasegawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Keigo Yoshizaki
- Orthodontics and Dentofacial Orthopedics Section, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, 812-8582, Japan
| | - Satoshi Fukumoto
- Pediatric Dentistry Section, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, 812-8582, Japan
| | - Akihito Yamamoto
- Department of Tissue Regeneration, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Naozumi Ishimaru
- Department of Oral Molecular Pathology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, 770-8504, Japan
| | - Tsutomu Iwamoto
- Department of Pediatric Dentistry / Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8549, Japan.
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Sawada H, Yabuuchi T, Higashi N, Iwasaki T, Kawasaki K, Maeda Y, Izumi T, Nakagawa Y, Shigemori K, Sakawa Y, Curry CB, Frost M, Iwata N, Ogitsu T, Sueda K, Togashi T, Glenzer SH, Kemp AJ, Ping Y, Sentoku Y. Ultrafast time-resolved 2D imaging of laser-driven fast electron transport in solid density matter using an x-ray free electron laser. Rev Sci Instrum 2023; 94:033511. [PMID: 37012804 DOI: 10.1063/5.0130953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 03/08/2023] [Indexed: 06/19/2023]
Abstract
High-power, short-pulse laser-driven fast electrons can rapidly heat and ionize a high-density target before it hydrodynamically expands. The transport of such electrons within a solid target has been studied using two-dimensional (2D) imaging of electron-induced Kα radiation. However, it is currently limited to no or picosecond scale temporal resolutions. Here, we demonstrate femtosecond time-resolved 2D imaging of fast electron transport in a solid copper foil using the SACLA x-ray free electron laser (XFEL). An unfocused collimated x-ray beam produced transmission images with sub-micron and ∼10 fs resolutions. The XFEL beam, tuned to its photon energy slightly above the Cu K-edge, enabled 2D imaging of transmission changes induced by electron isochoric heating. Time-resolved measurements obtained by varying the time delay between the x-ray probe and the optical laser show that the signature of the electron-heated region expands at ∼25% of the speed of light in a picosecond duration. Time-integrated Cu Kα images support the electron energy and propagation distance observed with the transmission imaging. The x-ray near-edge transmission imaging with a tunable XFEL beam could be broadly applicable for imaging isochorically heated targets by laser-driven relativistic electrons, energetic protons, or an intense x-ray beam.
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Affiliation(s)
- H Sawada
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - T Yabuuchi
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
| | - N Higashi
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - T Iwasaki
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - K Kawasaki
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - Y Maeda
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - T Izumi
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - Y Nakagawa
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - K Shigemori
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - Y Sakawa
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - C B Curry
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - M Frost
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - N Iwata
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
| | - T Ogitsu
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - K Sueda
- RIKEN SPring-8 Center, Hyogo 679-5148, Japan
| | - T Togashi
- Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
| | - S H Glenzer
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - A J Kemp
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Y Ping
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Y Sentoku
- Institute of Laser Engineering, Osaka University, Suita 565-0871, Osaka, Japan
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Kano F, Hashimoto N, Liu Y, Xia L, Nishihara T, Oki W, Kawarabayashi K, Mizusawa N, Aota K, Sakai T, Azuma M, Hibi H, Iwasaki T, Iwamoto T, Horimai N, Yamamoto A. Therapeutic benefits of factors derived from stem cells from human exfoliated deciduous teeth for radiation-induced mouse xerostomia. Sci Rep 2023; 13:2706. [PMID: 36792628 PMCID: PMC9932159 DOI: 10.1038/s41598-023-29176-w] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 01/31/2023] [Indexed: 02/17/2023] Open
Abstract
Radiation therapy for head and neck cancers is frequently associated with adverse effects on the surrounding normal tissue. Irreversible damage to radiation-sensitive acinar cells in the salivary gland (SG) causes severe radiation-induced xerostomia (RIX). Currently, there are no effective drugs for treating RIX. We investigated the efficacy of treatment with conditioned medium derived from stem cells from human exfoliated deciduous teeth (SHED-CM) in a mouse RIX model. Intravenous administration of SHED-CM, but not fibroblast-CM (Fibro-CM), prevented radiation-induced cutaneous ulcer formation (p < 0.0001) and maintained SG function (p < 0.0001). SHED-CM treatment enhanced the expression of multiple antioxidant genes in mouse RIX and human acinar cells and strongly suppressed radiation-induced oxidative stress. The therapeutic effects of SHED-CM were abolished by the superoxide dismutase inhibitor diethyldithiocarbamate (p < 0.0001). Notably, quantitative liquid chromatography-tandem mass spectrometry shotgun proteomics of SHED-CM and Fibro-CM identified eight proteins activating the endogenous antioxidant system, which were more abundant in SHED-CM than in Fibro-CM (p < 0.0001). Neutralizing antibodies against those activators reduced antioxidant activity of SHED-CM (anti-PDGF-D; p = 0.0001, anti-HGF; p = 0.003). Our results suggest that SHED-CM may provide substantial therapeutic benefits for RIX primarily through the activation of multiple antioxidant enzyme genes in the target tissue.
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Affiliation(s)
- Fumiya Kano
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Noboru Hashimoto
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Yao Liu
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Linze Xia
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Takaaki Nishihara
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Wakana Oki
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Keita Kawarabayashi
- grid.267335.60000 0001 1092 3579Department of Pediatric Dentistry, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Noriko Mizusawa
- grid.267335.60000 0001 1092 3579Department of Oral Bioscience, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Keiko Aota
- grid.267335.60000 0001 1092 3579Department of Oral Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Takayoshi Sakai
- grid.136593.b0000 0004 0373 3971Department of Oral-Facial Disorders, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Masayuki Azuma
- grid.267335.60000 0001 1092 3579Department of Oral Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Hideharu Hibi
- grid.27476.300000 0001 0943 978XDepartment of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomonori Iwasaki
- grid.267335.60000 0001 1092 3579Department of Pediatric Dentistry, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Tsutomu Iwamoto
- grid.265073.50000 0001 1014 9130Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Akihito Yamamoto
- Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504, Japan.
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Oku Y, Iwasaki T, Tsujii T, Sakoda-Iwata R, Hisagai S, Ban Y, Sato H, Ishii H, Kanomi R, Yamasaki Y. Effect of palatine tonsil hypertrophy on tongue posture and maxillofacial dentition: A pharyngeal airway computational fluid dynamics study. Pediatric Dental Journal 2023. [DOI: 10.1016/j.pdj.2023.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Li K, Iwasaki T, Quo S, Leary EB, Li C, Guilleminault C. [Nasomaxillary Expansion by Endoscopically-Assisted Surgical Expansion (EASE): An airway centric approach]. Orthod Fr 2022; 93:267-282. [PMID: 36217586 DOI: 10.1684/orthodfr.2022.93] [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: 06/16/2023]
Abstract
INTRODUCTION The aim of this study was to analyze the skeletal, dental and airway changes with endoscopically assisted surgical expansion (EASE) to widen the nasomaxillary complex for the treatment of sleep apnea in adults. METHODS One hundred and five consecutive patients underwent EASE. Cone beam computed tomography (CBCT) was conducted preoperatively and within four weeks after the completion of the expansion process. Computational fluid dynamic (CFD) analysis was performed on 20 randomly selected patients to assess airway flow changes. RESULTS One hundred patients (67 males) with the mean age of 35.0±13.5 years (17-64 years) had completed pre- and post-expansion imaging. Ninety-six patients (96%) had successful expansion defined as separation of the midpalatal suture at least 1 mm from anterior nasal spine (ANS) to posterior nasal spine (PNS). The nasal cavity expansion was 3.12±1.11 mm at ANS, 3.64±1.06 mm at first molar and 2.39±1.15 mm at PNS. The zygoma expansion was 2.17±1.11 mm. The ratio of dental expansion to skeletal expansion was 1.23:1 (3.83 mm:3.12 mm) at canine and 1.31:1 (4.77 mm:3.64 mm) at first molar. CFD airway simulation showed a dynamic change following expansion throughout the airway. The mean negative pressure improved in the nasal airway (from -395.5±721.0 to -32.7±19.2 Pa), nasopharyngal airway (from -394.2±719.4 to -33.6±18.5 Pa), oropharyngeal airway (from -405.9±710.8 to -39.4±19.3 Pa) and hypopharyngeal airway (from -422.6±704.9 to -55.1±33.7 Pa). The mean airflow velocity within the nasal airway decreased from 18.8±15.9 to 7.6±2.0 m/s and the oropharyngeal airway decreased from 4.2±2.9 to 3.2±1.2 m/s. The velocity did not change significantly in the nasopharyngeal and hypopharyngeal regions. CONCLUSIONS EASE results in expansion of the midpalatal suture from the ANS to PNS with a nearly pure skeletal movement of minimal dental effect. The expansion of the nasomaxillary complex resulted in the widening of the nasal sidewall throughout the nasal cavity. The improved air flow dynamics was demonstrated by CFD simulation.
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Affiliation(s)
- Kasey Li
- Sleep Apnea Surgery Center, 1900 University Avenue, Suite 105, East Palo Alto, CA, États-Unis
| | - Tomonori Iwasaki
- Médecine du développement, Cours de recherche sur la santé, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japon
| | - Stacey Quo
- School of Dentistry, University of California San Francisco, 707 Parnassus Ave, San Francisco, CA 94143, États-Unis
| | - Eileen B Leary
- Center for Sleep Sciences and Medicine, Stanford University School of Medicine, Stanford, 3165 Porter Dr, Palo Alto, CA 94304, États-Unis
| | - Connor Li
- Sleep Apnea Surgery Center, 1900 University Avenue, Suite 105, East Palo Alto, CA, États-Unis
| | - Christian Guilleminault
- Décédé. Sleep Medicine Division, Stanford University School of Medicine, Stanford, 3165 Porter Dr, Palo Alto, CA 94304, États-Unis
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Li K, Iwasaki T, Quo S, Li C, Young K, Leary E, Guilleminault C, Amat P. [Persistent pediatric obstructive sleep apnea treated with skeletally anchored transpalatal distraction]. Orthod Fr 2022; 93:139-153. [PMID: 35818284 DOI: 10.1684/orthodfr.2022.82] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
INTRODUCTION The aim of this study was to evaluate the impact of nasomaxillary expansion using skeletally anchored transpalatal distraction (TPD) in children without transverse maxillary deficiency that were previously treated by rapid palatal expansion (RPE). MATERIALS AND METHODS Twenty-nine consecutive children were treated by TPD. Twenty-five children, aged 10-16 years completed pre- and post-operative clinical evaluations, questionnaires (OSA-18), cone beam computed tomography (CBCT), and polysomnography (PSG). The pre- and post-operative CBCT data were used to reconstruct the 3-dimensional shape of the upper airway. Two measures of airflow function (pressure and velocity) were simulated by using computational fluid dynamics (CFD) at four different airway segments (nasal, nasopharyngeal, oropharyngeal and hypopharyngeal). RESULTS Twenty-three patients (92%) experienced improvement based on PSG. The apnea hypopnea index (AHI) improved from 6.72 ± 4.34 to 3.59 ± 5.11 (p<0.001) events per hour. Clinical symptoms based on OSA-18 scores were improved in all patients. Twenty-five patients (100%) had successful expansion defined as separation of the midpalatal suture at least 1mm from anterior nasal spine (ANS) to posterior nasal spine (PNS). The nasal sidewall widening was 2.59 ± 1,54 mm at canine, 2.91 ± 1,23 mm at first molar and 2.30 ± 1,29 mm at PNS. The ratio of dental expansion to nasal expansion was 1.12:1 (2.90mm:2.59mm) at canine and 1.37:1 (3.98mm:2.91mm) at first molar. The nasal airflow pressure reduced by 76% (-275.73 to -67.28 Pa) and the nasal airflow velocity reduced by over 50% (18.60 to 8.56 m/s). CONCLUSIONS Nasomaxillary expansion by skeletally anchored TPD improves OSA in children without transverse maxillary deficiency that were previously treated by RPE. A nearly parallel anterior-posterior opening of the mid-palatal suture achieves enlargement of the entire nasal passage with improvement of the airflow characteristics in the nasal and pharyngeal airway. The improved airflow characteristic is significantly correlated with the improved polysomnographic findings, thus demonstrating that nasomaxillary expansion in previously expanded patients is a viable treatment option.
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Hashimoto N, Nakazawa T, Iwasaki T, Hashimoto T. POS0706 LONG-TERM HYDROXYCHLOROQUINE TREATMENT IMPROVES ESSPRI AND ESSDAI IN PATIENTS WITH PRIMARY SJOGREN’S SYNDROME. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundPrimary Sjögren’s syndrome (pSS) is a chronic, systemic autoimmune disease typically affecting the salivary and lacrimal glands and producing symptoms of dry mouth, dry eyes, fatigue and pain. Hydroxychloroquine (HCQ) have been shown to have various immunomodulatory and immunosuppressive effects, and currently have established roles in the management of rheumatoid arthritis and systemic lupus erythematosus (SLE). However, the use of HCQ in pSS is based in expert recommendations and in few studies with a low level of evidence. There are very few publications assessing HCQ use in a double-blind, randomized, and placebo-controlled studies. In Japan, HCQ is indicated for patients with SLE and cutaneous lupus erythematosus (CLE) and is off-label use for pSS patients without CLE. Recently, ESSPRI and ESSDAI have been developed by the European League Against Rheumatism (EULAR) SS study group as standardized outcome tools for measuring patients’ reported symptoms and disease-specific activity. ESSDAI and ESSPRI have been proven to be valid and reliable, they have been used to select patients or as the primary or secondary outcome measures in clinical trials.ObjectivesThe aim of this study was to examine the efficacy of HCQ in pSS at 8 and 52 weeks after treatment evaluated by ESSPRI and ESSDAI.MethodsTwenty-six pSS patients (26 female, mean age 51.6 ± 13.6 years) with CLE who fulfilled the ACR/EULAR classification criteria for SS and/or the Japanese Ministry of Health and Welfare criteria for SS were studied. The clinical indexes were evaluated by ESSDAI, ESSPRI, IgG and CH50 before and after HCQ treatment at 8 and 52weeks. ESSPRI components were calculated individually and as a single factor composed of the mean of the three components (pain, fatigue, and dryness: VAS 0-10). ESSDAI (0–123) proposes the evaluation of 12 domains or organ systems (constitutional, lymphadenopathy, glandular, articular, cutaneous, pulmonary, renal, peripheral nervous system, central nervous system, muscular, hematological and biology).ResultsESSPRI and component of fatigue and pain were significantly lower at 8 and 52 weeks after treatment than HCQ pre-treatment (ESSPRI: 4.14±1.45 vs 3.38±1.57, 3.34±1.56, p=0.005, p=0.045, fatigue: 4.68±2.12 vs 3.68±1.96, 3.58±1.87, p=0.010, p=0.036, pain: 3.32±1.94 vs 2.09±1.60, 1.79±1.51, p=0.0043, p=0.0014). However, there was no significant difference in dryness component between HCQ pre-treatment and 8 and 52 weeks after treatment (4.41 ± 2.09 vs 4.32 ± 2.06, 4.21 ± 2.39, p = 0.71, p = 0.94), and the amount of saliva produced by the gum test also showed no significant difference between pre-HCQ treatment and 52 weeks after treatment (8.21 ± 6.72 vs 8.24 ± 6.79 mL / 10 minutes, p = 0.45). There was also a significant decrease in ESSDAI and constitutional, articular, cutaneous and biological domain at 52 weeks after treatment compared to HCQ pre-treatment (ESSDAI: 9.68±6.14 vs 4.74±6.43, p=0.0004; constitutional: 1.41±1.50 vs 0.63±1.26, p=0.034, articular: 1.00±1.02 vs 0.21±0.63, p=0.0027, cutaneous: 2.86±3.27 vs 1.11±2.49, p=0.010, biological: 1.14±0.83 vs 0.79±0.86, p=0.014). An improvement of at least 1 point or 15% in ESSPRI and at least 3 points in ESSDAI compared to HCQ pr-treatment were observed in 63.6% and 31.8% at 8 weeks and 73.7% and 68.4% at 52 weeks after treatment. In addition, IgG was significantly decreased at 52 weeks after treatment compared to HCQ pre-treatment (1934 ± 613 vs 1714 ± 564 mg / dL, p=0.0005).ConclusionHCQ treatment improved pain such as arthritis, fatigue, constitutional and cutaneous manifestations, but was not effective for salivary function and dryness. HCQ treatment was useful in improving ESSPRI and ESSDAI, and long-term treatment increased the number of effective cases from 8 weeks to 52 weeks.Disclosure of InterestsNone declared
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Nakakubo Y, Tsuji H, Takase Y, Iwasaki T, Shirakashi M, Onizawa H, Hiwa R, Kitagori K, Akizuki S, Nakashima R, Onishi A, Yoshifuji H, Tanaka M, Morinobu A. AB0470 THE ASSOCIATIONS OF ANTI-DNA ANTIBODIES WITH DISEASE ACTIVITY INDICES AND PATIENT REPORT OUTCOME PARAMETERS OF SLE IN KYOTO LUPUS COHORT. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundSince the goals of remission or low disease activity are becoming more realistic with advances in treatment for SLE, there is a need to examine the measurements for SLE especially in patients with low disease activity. It has been known that disease activities in SLE are correlated with anti-DNA antibodies (Abs). However, it was not clear which measurements of disease activities or patient reported outcomes correlate better with anti-DNA Abs.ObjectivesTo examine the association between parameters for SLE and anti-DNA Abs measured with RIA in Kyoto Lupus Cohort, a SLE registry in Kyoto University Hospital from 2019 to 2021.Methods1)Correlations between anti-DNA Abs with SLEDAI, M-SLEDAI (SLEDAI without anti-DNA Abs), VAS, LupusPRO, SF-36, and Systemic lupus erythematosus Symptom Checklist (SSC) were evaluated cross-sectionally (n = 310).2)The alterations in SLE parameters and anti-DNA Abs between two visits were examined (n = 106). Further, the correlations within 3 months were examined in cases with flare-ups of SLE (the alteration in SLEDAI > 0 and anti-DNA Abs≧0, n = 39). The associations of the alterations of anti-DNA Abs with each item of SLEDAI classified by organs were also examined.Results1)31 percent of the cases in the entire registry was classified as remission or low disease activity (Table 1). SLEDAI (mean±SD) was higher in patients positive for anti-DNA Abs (7.94±5.20) than that in patients negative for anti-DNA Abs (4.56±4.65) (p < 0.0001). Anti-DNA Abs were weakly correlated with SLEDAI (R = 0.24 [p < 0.0001]), M-SLEDAI (R = 0.15 [p = 0.014]), and Physician-VAS (R = 0.19 [p = 0.0016]). On the other hand, there were no significant correlations between anti-DNA Abs and LupusPRO and SSC. Some dimensions in SF-36 had weak correlations with anti-DNA Abs, while no component summary scores had significant correlations with anti-DNA Abs.Table 1.Patients’ demographics and disease characteristics in the cohort (n = 310).VariableResultsAge (years)47.7 (39.4, 57.5)Female sexn = 284 (91.6%)Disease duration (years)15.9 (9.4, 24.5)Anti-DNA Ab positivity†n = 106 (34.2%)Anti- DNA Ab titer (U/mL)4 (0, 8)SLEDAI4 (2, 8)SLEDAI<=4n = 162 (52.1%)SSC31 (16.2, 52.5)Remission or LDAn = 95 (30.7%)Patient-VAS38 (15, 52)Physician-VAS13.3 (3.3, 23.3)SF-36 PCS45.4 (36.6, 52.4)SF-36 MCS48.2 (41.5, 53.6)SF-36 RCS51.3 (42.6, 58.6)LupusPRO HQOL70.2 (54.8, 86.5)LupusPRO NHQOL41.7 (31.3, 51.0)Glucocorticoid (mg/day)5 (4, 8)* Data are n (%) or median (Q1, Q3).† Anti-DNA Ab positivity at the time of the cross-sectional observation.2)No significant correlations were observed between the alterations of SLEDAI and anti-DNA Abs (R = 0.00 [95% CI: -0.23 – 0.22, p = 0.95]) in the total of patients with various range of observation periods (Figure 1A). In contrast, a significant correlation was observed (R = 0.32, p = 0.04) within 3 months after the flare-ups of SLE (Figure 1B). No significant correlations were found between the alterations in VAS and anti-DNA Abs, or the alterations of SSC and anti-DNA Abs. They showed the following organ symptoms: renal involvement, 62.8%; musculoskeletal, 17.1%; neuropsychiatric, 11.4%; hematological, 5.7%; mucocutaneous, 11.4%; serositis, 2.9%, and fever, 2.9%.Figure 1.The associations between the alteration in anti-DNA Ab and SLEDAIConclusionThe associations between anti-DNA Abs with several parameters of SLE were examined. Anti-DNA Abs correlated with disease activities (SLEDAI) in SLE patients, especially when observed in the condition of flare-up.References[1]Ho A, et al. Arthritis Rheum. 2001;44:2342-9.Disclosure of InterestsNone declared
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Sugawara H, Doi H, Iwasaki T, Nakayama Y, Nishida Y, Gon Y, Kamakura M, Ohbori K, Sakane N, Nakamura N, Utsumi T, Morinobu A. POS1196 SARS-CoV-2 VACCINE ACCEPTANCE AND ASSOCIATED PSYCHOLOGICAL FACTORS IN PATIENTS WITH RHEUMATIC AND MUSCULOSKELETAL DISEASES. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundThe mortality rate of coronavirus disease 2019 (COVID-19) in patients with rheumatic and musculoskeletal disease (RMD) is as high as approximately 10% [1]. Therefore, vaccination promotion is a critical issue. However, there are few reports on the psychological aspects of patient vaccine acceptance.ObjectivesTo investigate the intention of patients with RMD to receive the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine and explore the psychological factors related to vaccine acceptance.MethodsWe conducted a questionnaire-based survey of 406 outpatients with RMD at Shiga General Hospital from July to October 2021. The questionnaire included the following sections: (1) vaccination status; (2) expectation of susceptibility to severe COVID-19; (3) expectation of vaccine efficacy; and (4) anxiety about the vaccine, which included concerns on I) the diminishing effect of the vaccine due to current treatment and II) the influence of vaccination on: i) primary disease status, ii) treatment, and iii) adverse reaction.ResultsThere were 305 vaccinated and 101 unvaccinated individuals. Unvaccinated individuals were classified into the acceptance group (n=60) and hesitancy group (n=41) according to their vaccination status (Figure 1).Figure 1.SARS-CoV-2 vaccination status (n=406)We compared the backgrounds and awareness of the patients on vaccination between the two groups. Univariate analysis did not show any difference in the backgrounds. The expectation of susceptibility to severe COVID-19 was similar in both groups. There were also no significant differences in the vaccine-related anxiety levels. However, the expectation of vaccine efficacy was higher in the acceptance group and significantly influenced vaccination intention as revealed by multivariate analyses (Table 1).Table 1.Awareness towards COVID-19 and SARS-CoV-2 vaccine associated with vaccination intentionAwareness towards COVID-19 and SARS-CoV-2 vaccineAcceptance(N=60)Hesitancy(N=41)UnivariateAnalysis§Multivariate Analysis||Median[IQR]Median[IQR]p-valuep-valueExpectation of susceptibility to severe COVID-19*2.0[1.0-3.0]2.0[1.5-2.5]0.84720.3440Expectation of vaccine efficacy†3.0[3.0-3.0]2.0[1.0-3.0]<0.0001¶<0.0001**Concerns about the diminishing effect of the vaccine due to current treatment‡2.0[1.0-3.0]3.0[2.0-3.0]0.04750.3600Concerns about the effect of vaccination on treatment‡3.0[1.0-3.0]3.0[2.0-4.0]0.01280.6232Concern about the effect of vaccination on primary disease status‡3.0[1.0-3.0]3.0[2.0-3.0]0.05760.7134Concern about the effect of vaccination on adverse reaction‡3.0[3.0-3.0]3.0[3.0-4.0]0.00930.8335*0: Less likely to become severe~3: Very likely to become severe, †0: Not expected at all~4: Highly expected, ‡0: Not concerned at all ~4:Very concerned§Pearson’s chi-square test or Wilcoxon test, ||Nominal logistic regression analysis, ¶ p<0.008 (after Bonferroni correction), ** p<0.05.ConclusionThe perception of vaccine efficacy is strongly correlated with vaccine acceptance. In order to promote vaccination in patients with RMDs, this study suggests that emphasizing the efficacy of the vaccine may be more effective than alleviating anxiety about the adverse effects of the vaccine.References[1]Strangfeld, A. et al. Ann. Rheum. Dis. 2021; 80: 930–942.Disclosure of InterestsHaruka Sugawara: None declared, Hiroshi Doi: None declared, Takeshi Iwasaki: None declared, Yoichi Nakayama: None declared, Yuri Nishida: None declared, Yoshie Gon: None declared, Masaki Kamakura: None declared, Kenshi Ohbori: None declared, Naoko Sakane: None declared, Naomi Nakamura: None declared, Takahiko Utsumi: None declared, Akio Morinobu Speakers bureau: Eli Lilly Japan K.K., Ono Pharmaceutical Co., Pfizer Inc., UCB Japan, AbbVie G.K., Asahi Kasei Pharma., and Chugai Pharmaceutical Co. Ltd., Grant/research support from: Eli Lilly Japan K.K., Ono Pharmaceutical Co., Pfizer Inc., UCB Japan, AbbVie G.K., Asahi Kasei Pharma., and Chugai Pharmaceutical Co. Ltd.
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Kurogoushi R, Hasegawa T, Akazawa Y, Iwata K, Sugimoto A, Yamaguchi-Ueda K, Miyazaki A, Narwidina A, Kawarabayashi K, Kitamura T, Nakagawa H, Iwasaki T, Iwamoto T. Fibroblast growth factor 2 suppresses the expression of C-C motif chemokine 11 through the c-Jun N-terminal kinase pathway in human dental pulp-derived mesenchymal stem cells. Exp Ther Med 2021; 22:1356. [PMID: 34659502 PMCID: PMC8515551 DOI: 10.3892/etm.2021.10791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/07/2021] [Indexed: 12/15/2022] Open
Abstract
The regulation of the mesenchymal stem cell (MSC) programming mechanism promises great success in regenerative medicine. Tissue regeneration has been associated not only with the differentiation of MSCs, but also with the microenvironment of the stem cell niche that involves various cytokines and immune cells in the tissue regeneration site. In the present study, fibroblast growth factor 2 (FGF2), the principal growth factor for tooth development, dental pulp homeostasis and dentin repair, was reported to affect the expression of cytokines in human dental pulp-derived MSCs. FGF2 significantly inhibited the expression of chemokine C-C motif ligand 11 (CCL11) in a time- and dose-dependent manner in the SDP11 human dental pulp-derived MSC line. This inhibition was diminished following treatment with the AZD4547 FGF receptor (FGFR) inhibitor, indicating that FGF2 negatively regulated the expression of CCL11 in SDP11 cells. Furthermore, FGF2 activated the phosphorylation of p38 mitogen-activated protein kinase (p38 MAPK), extracellular signal-regulated kinase 1/2 (ERK1/2) and c-Jun N-terminal kinases (JNK) in SDP11 cells. The mechanism of the FGFR-downstream signaling pathway was then studied using the SB203580, U0126 and SP600125 inhibitors for p38 MAPK, ERK1/2, and JNK, respectively. Interestingly, only treatment with SP600125 blocked the FGF2-mediated suppression of CCL11. The present results suggested that FGF2 regulated the expression of cytokines and suppressed the expression of CCL11 via the JNK signaling pathway in human dental pulp-derived MSCs. The present findings could provide important insights into the association of FGF2 and CCL11 in dental tissue regeneration therapy.
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Affiliation(s)
- Rika Kurogoushi
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan.,Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Tomokazu Hasegawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Yuki Akazawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Kokoro Iwata
- Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Asuna Sugimoto
- Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
| | - Kimiko Yamaguchi-Ueda
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Aya Miyazaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Anrizandy Narwidina
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Keita Kawarabayashi
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Takamasa Kitamura
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Hiroshi Nakagawa
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Kuramoto, Tokushima 770-8504, Japan
| | - Tsutomu Iwamoto
- Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
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Iwasaki T, Papageorgiou SN, Yamasaki Y, Ali Darendeliler M, Papadopoulou AK. Nasal ventilation and rapid maxillary expansion (RME): a randomized trial. Eur J Orthod 2021; 43:283-292. [PMID: 33564835 DOI: 10.1093/ejo/cjab001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To assess three rapid maxillary expansion (RME) appliances in nasal ventilation. TRIAL DESIGN Three-arm parallel randomized clinical trial. METHODS Sixty-six growing subjects (10-16 years old) needing RME as part of their orthodontic treatment were randomly allocated (1:1:1 ratio) to three groups of 22 patients receiving Hyrax (H), Hybrid-Hyrax (HH), or Keles keyless expander (K). The primary outcome of nasal ventilation (pressure and velocity) and secondary outcomes (skeletal, dental, soft tissue, and nasal obstruction changes) were blindly assessed on the initial (T0) and final (T1, 6 months at appliance removal) cone-beam computed tomography (CBCT) data by applying computational fluid dynamics (CFD) method. Differences across groups were assessed with crude and adjusted for baseline values and confounders (gender, age, skeletal maturation, expansion amount, mucosal/adenoid hypertrophy, nasal septum deviation) regression models with alpha = 5%. RESULTS Fifty-four patients were analysed (19H, 21HH, 14K). RME reduced both nasal pressure (H: -45.8%, HH: -75.5%, K: -63.2%) and velocity (H: -30%, HH: -58.5%, K: -35%) accompanied with nasal obstruction resolution (H: 26%, HH: 62%, K: 50%). Regressions accounting for baseline severity indicated HH expander performing better in terms of post-expansion maximum velocity (P = 0.03) and nasal obstruction resolution (P = 0.04), which was robust to confounders. Mucosal/adenoid hypertrophy and nasal septum deviation changes were variable, minimal, and similar across groups. The HH resulted in significantly greater increase in the nasal cross-sectional area (62.3%), anterior (14.6%), and posterior (10.5%) nasal widths. Nasal obstruction resolution was more probable among younger (P = 0.04), skeletally immature (P = 0.03), and male patients (P = 0.02) without pre-treatment mucosal hypertrophy (P = 0.04), while HH was associated with marginal greater probability for obstruction resolution. CONCLUSIONS RME resulted in improvement of nasal skeletal parameters and simulated ventilation with the former being in favour of the HH and the latter not showing significant differences among the three appliances. LIMITATION Attrition in the K group due to blocked activation rods possibly leading to limited sample to identify any existing group differences. HARMS Replacement of blocked Keles expanders for finalizing treatment. PROTOCOL The protocol was not published before the trial commencement. REGISTRATION Australian and New Zealand Clinical Trial Registry; ACTRN12617001136392.
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Affiliation(s)
- Tomonori Iwasaki
- Department of Pediatric Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Spyridon N Papageorgiou
- Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Youichi Yamasaki
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - M Ali Darendeliler
- Discipline of Orthodontics and Paediatric Dentistry, School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, Australia
| | - Alexandra K Papadopoulou
- Discipline of Orthodontics and Paediatric Dentistry, School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, Australia
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Kadoba K, Watanabe R, Iwasaki T, Kitagori K, Akizuki S, Murakami K, Nakashima R, Hashimoto M, Tanaka M, Ohmura K, Morinobu A, Terao C, Yoshifuji H. POS0345 CLINICOGENETIC STUDY OF FIVE NOVEL SUSCEPTIBILITY LOCI FOR TAKAYASU ARTERITIS: SUSCEPTIBILITY LOCI IN THE IL12B AND PTK2B REGION, BUT NOT THE LILRA3, DUSP22, KLHL33 REGIONS, ARE ASSOCIATED WITH VASCULAR DAMAGE IN TAKAYASU ARTERITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:We have previously identified single nucleotide polymorphism (SNP) rs6871626 in IL12B, rs103294 in LILRA3, rs17133698 in DUSP22, rs2322599 in PTK2B, and rs1713450 in KLHL33 as non-HLA susceptibility loci in Takayasu arteritis (TAK) [1, 2]. However, the association of these SNPs with clinical features has scarcely investigated.Objectives:In this study, we aimed to examine how these SNPs contribute to clinical features and vascular damage in TAK.Methods:We enrolled 99 TAK patients who were enrolled in our previous genome-wide association study (GWAS) [2]. To assess vascular damage, Takayasu Arteritis Damage Score (TADS) and Vasculitis Damage Index (VDI) were measured at the last visit before November 2020. As for organ damages, the presence or absence of aortic regurgitation (AR), hypertension, ischemic heart disease, cerebrovascular event, visual loss, end-stage renal failure, and inflammatory bowel disease were evaluated. Treatment profiles including immunosuppressive drugs and vascular interventions were also reviewed.Results:The incidence of AR was positively associated with the risk allele of IL12B rs6871626 (p=0.0052; odds ratio (OR) 2.45, 95% confidence interval (CI) 1.27-4.73), and so was the proportion of patients who underwent aortic valve replacement (p=0.023; OR 3.64, 95% CI 1.08-12.24) (table 1). The incidence of hypertension was associated with the risk allele of IL12B rs6871626 (p=0.049; OR 1.82, 95% CI 0.99-3.36) and PTK2B rs2322599 (p=0.044; OR 2.52, 95% CI 0.97-6.54) (table 1). The proportion of biologic users tended to be higher in the risk genotypes of IL12B rs6871626 (p=0.15; OR1.80, 95% CI 0.79-3.99). Regarding vascular damage, there was positive correlation between TADS and the risk allele of IL12B rs6871626 (p=0.0035; β= 1.35) (Figure 1). Moreover, VDI was also positively correlated with the allele (p=0.0054; β= 0.96) (Figure 1). No other clinicogenetic associations were observed between five SNPs and vasculitis-associated damages.Table 1.The association of the five SNPs with aortic regurgitation and hypertensionAortic regurgitationHypertensionOR (95% CI)p valueOR (95% CI)p valueIL12B rs68716262.45 (1.27-4.73)0.0052*1.82 (0.99-3.36)0.049*PTK2B rs23225991.21 (0.51-2.86)0.672.51 (0.97-6.54)0.044*LILRA3 rs1032941.16 (0.52-2.61)0.711.20 (0.55-1.64)0.64DUSP22 rs171336980.56 (0.28-1.13)0.0900.87 (0.46-1.63)0.66KLHL33 rs17134500.89 (0.42-1.91)0.771.48 (0.68-3.22)0.31SNP, single nucleotide polymorphism; OR, odds ratio; CI, confidence intervalConclusion:In the present study, IL12B rs6871626 was closely correlated with vascular damage. We also found association between PTK2B rs2322599 and hypertension. There was no significant relevance between vascular damage and LILRA3 rs103294, DUSP22 rs17133698, or KLHL33 rs1713450.References:[1]Terao C et al. Am J Hum Genet. 2013;93(2):289-97.[2]Terao C et al. Proc Natl Acad Sci U S A. 2018;115(51):13045-50.Disclosure of Interests:Keiichiro Kadoba: None declared, Ryu Watanabe Speakers bureau: I have received speaker’s fee from Mitsubishi Tanabe Pharma, Pfizer, Sanofi, AbbVie, Asahi Kasei, Eisai, Eli Lilly, Bristol-Myers Squibb, and Janssen., Takeshi Iwasaki: None declared, Koji Kitagori Grant/research support from: KK has received research grants from GlaxoSmithKline., Syuji Akizuki: None declared, Kosaku Murakami Speakers bureau: I have received speaking fees from Eisai Co. Ltd, Chugai Pharmaceutical Co. Ltd., Pfizer Inc., Bristol-Myers Squibb, Mitsubishi Tanabe Pharma Corporation, UCB Japan Co. Ltd, Daiichi Sankyo Co. Ltd. and Astellas Pharma Inc., Ran Nakashima: None declared, Motomu Hashimoto Speakers bureau: I have received a research grant and/or speaker fee from Bristol-Myers, Eisai, Ely Lilly, Mitsubishi Tanabe Pharma., Grant/research support from: I have received a research grant and/or speaker fee from Bristol-Myers, Eisai, Ely Lilly, Mitsubishi Tanabe Pharma., Masao Tanaka Speakers bureau: I have received research grants and/or speaker fees from AbbVie GK, Asahi Kasei Pharma Corporation, Astellas Pharma Inc., Bristol-Myers Squibb, Chugai Pharmaceutical Co., Ltd., Eisai Co., Ltd., Eli Lilly and Company, Pfizer Inc., UCB Japan Co., Ltd., Janssen Pharmaceutical K.K., Mitsubishi Tanabe Pharma Corporation, Novartis Pharma K.K., Taisho Pharma Co., Ltd, and Takeda Pharmaceutical Company Limited., Koichiro Ohmura Speakers bureau: I have received speaker’s fee from Abbvie, Actelion, Asahikasei Pharma, Astellas, AYUMI, Bristol-Myers Squibb, Chugai, Daiichi-Sankyo, Eisai, Eli Lilly, GSK, Janssen, JB, Mitsubishi Tanabe, Nippon Kayaku, Nippon Shinyaku, Novartis, Sanofi and Takeda., Grant/research support from: I have received research grants from GlaxoSmithKline., Akio Morinobu Speakers bureau: I have received speaking fees from Chugai Pharmaceutical Co. Ltd., Grant/research support from: I have received research grants from Chugai Pharmaceutical Co. Ltd., Chikashi Terao: None declared, Hajime Yoshifuji Speakers bureau: I have received lecture fees from Chugai., Consultant of: I have been an advisory board for a clinical trial conducted by Janssen.
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Hashimoto N, Uchiyama S, Nakazawa T, Iwasaki T, Hashimoto T. POS0707 SALIVARY GLAND ULTRASONOGRAPHY AND THE CLINICAL FEATURES USING ESSDAI IN PATIENTS OF EARLY-ONSET VERSUS LATE-ONSET WITH PRIMARY SJÖGREN’S SYNDROME. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Primary Sjögren’s syndrome (pSS) is a chronic inflammatory autoimmune disease characterized by lymphocyte infiltration in salivary and lacrimal glands. pSS affects primarily middle-aged and elderly patients, although younger age groups may also be involved. However, differences of etiology and pathogenesis between early-onset pSS (EOpSS) and late-onset pSS (LOpSS) are unknown. Recently, standardized outcome tools for measuring disease-specific activity and patients’ reported symptoms have been formulated by the European League Against Rheumatism (EULAR) SS study group: the EULAR SS Disease Activity Index (ESSDAI) for systemic features of pSS [1]. Also, as the new imaging techniques, salivary gland ultrasonography (SGUS) proved valuable for assessing salivary gland involvement in SS and seemed to exhibit good diagnostic properties. In addition, previous studies have demonstrated usefulness of SGUS for the prognostic stratification of patients with pSS [2], [3], [4].Objectives:The aim of this study was to examine the differences of etiology and pathogenesis between EOpSS and LOpSS using ESSDAI and SGUS.Methods:Fifty-six pSS patients who fulfilled the American College of Rheumatology (ACR) / European League Against Rheumatism (EULAR) classification criteria for SS were studied. Based on the disease onset age, all pSS patients were divided into two groups as those with the onset age of 40 years old or younger (EOpSS: n=26) and those with the onset age of older than 65 years old (LOpSS: n=30). The clinical findings were evaluated ESSDAI and OMERACT SGUS score at the first visit to our hospital. The ESSDAI (0–123) proposes the evaluation of 12 domains or organ systems (constitutional, lymphadenopathy, glandular, articular, cutaneous, pulmonary, renal, peripheral nervous system, central nervous system, muscular, hematological and biology). All patients were examined SGUS by a single investigator who was blinded to device (TUS-A300; Canon Medical Systems, Tokyo, Japan) with a linear transducer (7.5-10MHz). The OMERACT SGUS score was used for graded changes in the parenchymal homogeneity of salivary glands: grade 0, normal-appearing salivary gland parenchyma; grade 1, minimal change: mild inhomogeneity without hypo/anechoic areas; grade 2, moderate change: moderate inhomogeneity with focal hypo/anechoic areas; grade 3, severe change: diffuse inhomogeneity with hypo/anechoic areas occupying the entire gland surface [5].Results:The proportions of positive sera of RF, anti-SS-A and anti-SS-B antibodies were not different in the two groups, but the disease activities were higher in the EOpSS than in the LOpSS patients by measuring ESSDAI (7.30 vs 4.23, p=0.008), especially in constitutional domain (1.50 vs 0.60, p=0.03), articular domain (1.54 vs 0.40, p=0.0002) and biological domain (1.35 vs 0.90, p=0.04). No difference in salivary secretion was found between two groups (EOpSS: 8.02 vs LOpSS: 6.31 mL/10min.), but the OMERACT SGUS score was higher in LOpSS than in EOpSS patients (2.00 vs 2.70, p=0.0002).Conclusion:Although serological findings were not different, EOpSS patients had higher disease activity but less severe salivary gland degeneration than that in LOpSS patients, suggesting the pathogenesis of these two groups was different.References:[1]Seror R, et al. Ann Rheum Dis. 2010 Jun;69(6):1103-9.[2]Arthritis Care Res (Hoboken). 2014 Jul;66(7):1102-7.[3]Hammenfors DS, et al. Clin Exp Rheumatol. 2015 Jan-Feb;33(1):56-62.[4]Milic V, et al. PLoS One. 2019 Dec 31;14(12): e0226498.[5]Jousse-Joulin S, et al. Ann Rheum Dis. 2019 Jul;78(7):967-973.Disclosure of Interests:None declared
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Iwasaki T, Sugiyama T, Yanagisawa-Minami A, Oku Y, Yokura A, Yamasaki Y. Effect of adenoids and tonsil tissue on pediatric obstructive sleep apnea severity determined by computational fluid dynamics. J Clin Sleep Med 2020; 16:2021-2028. [PMID: 32780013 DOI: 10.5664/jcsm.8736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA) is a respiratory disorder caused by the obstruction of the upper airway during sleep. The most common cause of pediatric OSA is adenotonsillar hypertrophy. Adenotonsillectomy is the first-line treatment for pediatric OSA; however, OSA persists in a significant number of patients due, in part, to the method of evaluating enlarged adenoids and tonsil tissue. The reason for these effects on OSA severity is not clear. This study aimed to establish a method to diagnose the need for adenoidectomy or tonsillectomy. METHODS Twenty-seven Japanese children (mean age 6.6 years) participated in this study, undergoing polysomnography and computed tomography examination. Pharyngeal airway morphology (adenoids and tonsil tissue size, volume, and cross-sectional area [CSA]) and pressure on the upper airway were evaluated at each site using computational fluid dynamic analysis. RESULTS Apnea-hypopnea index (AHI) showed a strong linear association with maximum negative pressure (Pmax) (AHI = -0.055* events/h Pmax -1.326, R² = .805). The relationship between minimum CSA (CSAmin) and Pmax was represented by an inversely proportional fitted curve (Pmax = -4797/CSAmin -5.1, R² = .507). The relationship between CSAmin and AHI was also represented by an inversely proportional fitted curve (AHI = 301.6 events/h/CSAmin 1.22, R² = .680). Pmax greatly increased if CSAmin became ≤ 30 mm². The negative pressure of each site increased when CSA measured ≤ 50 mm². CONCLUSIONS In children, when the CSA for each site is ≤ 50 mm², AHI is likely to be elevated, and the patient may require tonsillectomy or adenoidectomy.
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Affiliation(s)
- Tomonori Iwasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Takesi Sugiyama
- Department of Pediatrics, Yamanashi University Graduate School of Medicine, Yamanashi, Japan.,Pediatrics, Ichinomiya-Nishi Hospital, Ichinomiya, Aichi, Japan
| | - Ayaka Yanagisawa-Minami
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yoichiro Oku
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Anna Yokura
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Youichi Yamasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Takahashi T, Sakai N, Iwasaki T, Doyle TC, Mobley WC, Nishino S. Detailed evaluation of the upper airway in the Dp(16)1Yey mouse model of Down syndrome. Sci Rep 2020; 10:21323. [PMID: 33288820 PMCID: PMC7721723 DOI: 10.1038/s41598-020-78278-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 05/26/2020] [Accepted: 11/23/2020] [Indexed: 12/18/2022] Open
Abstract
A high prevalence of obstructive sleep apnea (OSA) has been reported in Down syndrome (DS) owing to the coexistence of multiple predisposing factors related to its genetic abnormality, posing a challenge for the management of OSA. We hypothesized that DS mice recapitulate craniofacial abnormalities and upper airway obstruction of human DS and can serve as an experimental platform for OSA research. This study, thus, aimed to quantitatively characterize the upper airway as well as craniofacial abnormalities in Dp(16)1Yey (Dp16) mice. Dp16 mice demonstrated craniofacial hypoplasia, especially in the ventral part of the skull and the mandible, and rostrally positioned hyoid. These changes were accompanied with a shorter length and smaller cross-sectional area of the upper airway, resulting in a significantly reduced upper airway volume in Dp16 mice. Our non-invasive approach, a combination of computational fluid dynamics and high-resolution micro-CT imaging, revealed a higher negative pressure inside the airway of Dp16 mice compared to wild-type littermates, showing the potential risk of upper airway collapse. Our study indicated that Dp16 mice can be a useful model to examine the pathophysiology of increased upper airway collapsibility of DS and to evaluate the efficacy of therapeutic interventions for breathing and sleep anomalies.
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Affiliation(s)
- Tatsunori Takahashi
- Sleep and Circadian Neurobiology Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, 3155 Porter Drive, Room 2141, Palo Alto, CA, 94304, USA.,Department of Medicine, Jacobi Medical Center, Albert Einstein College of Medicine, 1400 Pelham Parkway South, Bronx, NY, 10461, USA
| | - Noriaki Sakai
- Sleep and Circadian Neurobiology Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, 3155 Porter Drive, Room 2141, Palo Alto, CA, 94304, USA.
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, Kagoshima, 8908544, Japan
| | - Timothy C Doyle
- The Neuroscience Community Labs, Wu Tsai Neurosciences Institute, Stanford University, 318 Campus Drive, Suite S170, Stanford, CA, 94305, USA
| | - William C Mobley
- Department of Neurosciences, University of California San Diego School of Medicine, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Seiji Nishino
- Sleep and Circadian Neurobiology Laboratory, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, 3155 Porter Drive, Room 2141, Palo Alto, CA, 94304, USA
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Shirazawa Y, Iwasaki T, Ooi K, Kobayashi Y, Yanagisawa‐Minami A, Oku Y, Yokura A, Ban Y, Suga H, Kawashiri S, Yamasaki Y. Cover image. Orthod Craniofac Res 2020. [DOI: 10.1111/ocr.12407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hashimoto N, Uchiyama S, Kitano M, Nakazawa T, Iwasaki T, Hashimoto T. SAT0546 COMPARISON OF SHEAR WAVE ELASTOGRAPHY AND CONVENTIONAL ULTRASONOGRAPHY OF SALIVARY GLANDS IN PATIENTS WITH PRIMARY SJOGREN’S SYNDROME: CAN SHEAR WAVE ELASTOGRAPHY CAPTURE LESIONS THAT ARE DIFFICULT TO DIAGNOSE WITH CONVENTIONAL ULTRASONOGRAPHY? Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Sjögren’s syndrome (SS) is a chronic inflammatory autoimmune disease characterized by lymphocyte infiltration in salivary and lacrimal glands. Recently, salivary gland ultrasonography (US) proved valuable for assessing salivary gland involvement in SS and seemed to exhibit good diagnostic properties. In the literature, studies conducted by the scoring of the structural changes according to B-Mode US of salivary glands showed a wide variability regarding sensitivity and specificity. Our previously study demonstrated that although conventional B-mode US findings were useful for the diagnosis of SS with low salivary flow they were not for subclinical SS with normal salivary flow (EULAR 2016). Recently, we reported that the tissue elasticity was decreased due to structural changes in the submandibular glands (SG) at the advanced stage of the disease and the shear wave elastography (SWE) is useful to distinguish pathological changes of the SG in patients with SS (EULAR2018).Objectives:The aim of this study was to compare the usefulness of SG conventional B-mode US and SWE findings in non-SS and SS patients classified by salivary flow.Methods:Twenty-two non-SS patients and 99 SS patients who fulfilled the American College of Rheumatology (ACR) / European League Against Rheumatism (EULAR) classification criteria for SS were studied. SS patients were divided into three groups according to salivary flow using gum test (VL/SS <5mL/10min. (n=38), L/SS 5-10mL/10min. (n=41) and N/SS >10mL/10min. (n=20)). All patients were examined SGUS by a single investigator who was blinded to device (TUS-A300; Canon Medical Systems, Tokyo, Japan) with a linear transducer (7.5-10MHz). The examination consisted of conventional B-mode US (US staging score), pulsed wave Doppler US (PD grading score) and SWE with quantitative assessment. US staging scores were assessed by glandular size, inhomogeneity and contrast of diagastric muscle (stage 0 to 3). PD grading scores were graded by pulsed wave pattern in pulsed wave Doppler US at the internal SG facial arteries (grade 0 to 2). With the region-of-interest (ROI) placed over the stiffest areas of the lesion on SWE, the quantitative means of the elasticity values were measured by shear wave velocity (Vs; m/s) and elasticity (E; kPa) for each lesion.Results:The US staging score, the PD grading score, the values of Vs and E were significantly higher in patients with SS than in non-SS group (SS vs non-SS; US staging score 2.10±1.07 vs 0.86±0.99, p<0.0001, PD grading score 1.17±0.83 vs 0.23±0.61, p<0.0001, Vs 1.75±0.34 vs 1.57±0.29m/s, p=0.02, E 9.64±4.02 vs 7.81±2.27kPa, p=0.04). However, there was no significant difference between non-SS and N/SS in early-stage SS by US staging score (N/SS vs non-SS; 0.95±0.89 vs 0.86±0.99) and PD grading score (N/SS vs non-SS; 0.40±0.15 vs 0.23±.061). In contrast, the values of Vs and E were highest in N/SS as compared with all groups, and were significantly higher in N/SS than in non-SS (N/SS vs non-SS; Vs 2.02±0.24 vs 1.57±0.29m/s, p<0.01, E 12.58±3.16 vs 7.81±2.27kPa, p<0.01).Conclusion:The present study demonstrated that although the tissue elasticity was decreased due to structural changes at the advanced stage, it increased due to inflammation and high viscosity in the SG at the subclinical SS with normal salivary flow comparing that in non-SS patients. The SWE may be a useful tool for the differential diagnosis between patients with non-SS and subclinical SS with normal salivary flow, which is difficult to distinguish by conventional B-mode US.Disclosure of Interests:None declared
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Takase Y, Doi H, Iwasaki T, Hashimoto M, Inaba R, Kozuki T, Taniguchi M, Tabuchi Y, Kitagori K, Akizuki S, Murakami K, Nakashima R, Yoshifuji H, Yamamoto W, Tanaka M, Ohmura K. THU0285 ANALYSIS OF THE RELATIONSHIP BETWEEN ORGAN DAMAGE AND QUALITY OF LIFE IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Systemic lupus erythematosus (SLE) is an autoimmune disease that can not only cause systemic symptoms, such as fever and arthritis, but can also damage important organs, such as those of the central nervous system and the kidneys. Prevention of irreversible organ damage is important for better prognosis [1]. Additionally, the importance of maintaining the quality of life (QOL) of patients has recently been emphasized. However, only a few studies have examined the relationship between irreversible organ damage and patient QOL.Objectives:To assess the relationship between organ damage and QOL, and to survey which organs have more significant effects on QOL.Methods:We conducted a questionnaire-based survey of 183 patients with SLE at Kyoto University Hospital from September to December 2019. We used the SLICC/ACR Damage Index (SDI) to evaluate organ damage [2]. The following five scales were employed to evaluate QOL: the physical (PCS) and mental component summary (MCS) of the Medical Outcome Study (MOS) 36-Item Short-Form Health Survey version 2.0 (SF-36v2) [3], health (HRQOL) and non-health-related QOL (N-HRQOL) of LupusPRO [4], and SLE Symptom Checklist (SSC) [5].Results:Linear regression analysis showed significant correlation between the SDI score and all QOL scales except for N-HRQOL, suggesting negative effects of organ damage on QOL (Table 1). Next, we analysed whether there was a significant difference in the SF-36 score between those who were positive and negative for each SDI item (41 in total), using the Wilcoxon rank sum test. Muscle atrophy or weakness (p= 3.0×10-10), osteoporosis with fracture or vertebral collapse (p= 9.7×10-8), claudication (p= 7.4×10-5), and cognitive impairment or major psychosis (p= 9.9×10-5) significantly correlated (p< 1.2×10-3) with PCS, and scarring chronic alopecia (p= 3.4×10-4) with MCS (Table 2). In addition, the five SDI items significantly correlated with the remaining three QOL scales (HRQOL, N-HRQOL, and SSC;p< 0.05).Table 1.Relationship between the SDI score and QOLSF-36LupusPROSSCPCSMCSHRQOLN-HRQOLp-value<2.0×10-161.7×10-32.2×10-110.231.9×10-8Table 2.Relationship between each SDI item and the SF-36 score (p< 1.2×10-3SDI itemPCS scorep-valuePositive(Median (IQR))Negative(Median (IQR))Muscle atrophy/weakness33 (19-45)50 (43-54)3.0×10-10Osteoporosis with fracture/vertebral collapse24 (12-32)49 (38-54)9.7×10-8Claudication31 (19-35)49 (38-54)7.4×10-5Cognitive impairment/psychosis27 (17-33)49 (38-54)9.9×10-5SDI itemMCS scorep-valuePositive(Median (IQR))Negative(Median (IQR))Scarring chronic alopecia42 (29-51)49 (39-54)3.4×10-4Conclusion:We demonstrated that organ damage has negative effects on patient QOL, indicating the importance of preventing irreversible organ damage for maintaining QOL. Moreover, muscle atrophy/weakness, osteoporosis with fracture/vertebral collapse, claudication, cognitive impairment/major psychosis, and scarring chronic alopecia significantly correlated with QOL deterioration, suggesting that these items should be examined with special care in clinical practice.References:[1]Lopez R, et al. Rheumatology (Oxford). 2012; 51:491-498.[2]Gladman D, et al. Arthritis Rheum. 1996; 39:363-369.[3]Fukuhara S, et al. J Clin Epidemiol. 1998; 51:1037-1044.[4]Inoue M, et al. Lupus. 2017; 26:849-856.[5]Grootscholten C, et al. Qual Life Res. 2003; 12:635–644.Disclosure of Interests:Yudai Takase: None declared, Hiroshi Doi: None declared, Takeshi Iwasaki: None declared, Motomu Hashimoto Grant/research support from: Bristol-Myers Squibb, Eisai, and Eli Lilly and Company., Speakers bureau: Bristol-Myers Squibb and Mitsubishi Tanabe Pharma., Ryuta Inaba: None declared, Tomohiro Kozuki: None declared, Masashi Taniguchi: None declared, Yuya Tabuchi Paid instructor for: Astellas Pharma, GlaxoSmithKline, Mitsubishi Tanabe Pharma, and Nippon Shinyaku., Speakers bureau: AbbVie, Janssen Pharmaceutical, Mitsubishi Tanabe Pharma, Nippon Shinyaku, and Novartis Pharma. (Outside the field of the present study.), Koji Kitagori: None declared, Syuji Akizuki: None declared, Kosaku Murakami Speakers bureau: AbbVie, Eisai, and Mitsubishi Tanabe Pharma., Ran Nakashima Grant/research support from: Takeda Pharmaceutical. (Outside the field of the present study.), Speakers bureau: Astellas Pharma, Medical & Biological Laboratories, AstraZeneca, and Boehringer Ingelheim. (Outside the field of the present study.), Hajime Yoshifuji Grant/research support from: Astellas Pharma. (Outside the field of the present study.), Speakers bureau: Chugai Pharmaceutical. (Outside the field of the present study.), Wataru Yamamoto: None declared, Masao Tanaka Grant/research support from: AbbVie, Asahi Kasei Pharma, Astellas Pharma, Ayumi Pharmaceutical, Chugai Pharmaceutical, Eisai, Mitsubishi Tanabe Pharma, Taisho Pharmaceutical, and UCB Japan., Speakers bureau: AbbVie, Asahi Kasei Pharma, Astellas Pharma, Bristol-Myers Squibb, Chugai Pharmaceutical, Eisai, Eli Lilly and Company, Janssen Pharmaceutical, Mitsubishi Tanabe Pharma, Novartis Pharma, Pfizer, Taisho Pharmaceutical, Takeda Pharmaceutical, and UCB Japan., Koichiro Ohmura Grant/research support from: Astellas Pharma, AYUMI Pharmaceutical, Chugai Pharmaceutical, Daiichi Sankyo, Eisai, Japan Blood Products Organization, Mitsubishi Tanabe Pharma, Nippon Kayaku, Nippon Shinyaku, Sanofi, and Takeda Pharmaceutical., Speakers bureau: AbbVie, Actelion Pharmaceuticals Japan, Asahi Kasei Pharma, AYUMI Pharmaceutical, Bristol-Myers Squibb, Chugai Pharmaceutical, Eisai, Eli Lilly and Company, GlaxoSmithKline, Janssen Pharmaceutical, Mitsubishi Tanabe Pharma, Novartis Pharma, and Sanofi.
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Yoon JS, Nishifuji K, Iwasaki T. Development of an in vitro submerged culture system to synthesize epidermal ceramides in canine keratinocytes. Res Vet Sci 2020; 130:48-51. [PMID: 32143083 DOI: 10.1016/j.rvsc.2020.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 12/31/2019] [Accepted: 02/18/2020] [Indexed: 12/30/2022]
Abstract
Ceramides (CERs) in the stratum corneum (SC) are known to play a crucial role in determining skin barrier function in dogs. We aimed to develop an in vitro culture system that synthesized epidermal CER classes to better understand the synthesis of CER classes in canine SC-. Canine keratinocyte cells (MSCEK) at appropriate confluency were incubated with high Ca2+ (1.8 mM CaCl2) supplemented serum-free medium. Eight days post Ca2+ application, the surface of cultured MSCEK was broadly stained with anti-loricrin antibody implying that the keratinocytes had stratified into stratum granulosum. MSCEK cells synthesized heterogenous epidermal CERs, similar to those seen during the stratification of canine keratinocytes. CER fractions obtained from MSCEK cells were comparable to those from canine SC, including CER[EOS] (combination of ω-hydroxy fatty acids and sphingosines), CER[NP] (combination of non-hydroxy fatty acids and phytosphingosines), and CER[EOP] (combination of ω-hydroxy fatty acids and phytosphingosines), all of which are lowered in the SC during canine atopic dermatitis. Thus, the present study provides a simple culture system as a tool for in-depth analysis of CER production in canine keratinocytes.
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Affiliation(s)
- J S Yoon
- Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan.
| | - K Nishifuji
- Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
| | - T Iwasaki
- Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
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Shirazawa Y, Iwasaki T, Ooi K, Kobayashi Y, Yanagisawa-Minami A, Oku Y, Yokura A, Ban Y, Suga H, Kawashiri S, Yamasaki Y. Relationship between pharyngeal airway depth and ventilation condition in mandibular setback surgery: A computational fluid dynamics study. Orthod Craniofac Res 2020; 23:313-322. [PMID: 32056328 DOI: 10.1111/ocr.12371] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 02/07/2020] [Accepted: 02/10/2020] [Indexed: 12/27/2022]
Abstract
OBJECTIVES This study aimed to determine the anteroposterior depth (APD) of the pharyngeal airway (PA) where post-operative PA obstruction was predicted, using computer fluid dynamics (CFD), in order to prevent obstructive sleep apnoea after mandibular setback surgery. SETTINGS AND SAMPLE POPULATION Nineteen skeletal Class III patients (8 men; mean age, 26.7 years) who required mandibular setback surgery had computed tomography images taken before and 6 months after surgery. METHODS The APD of each site of the four cross-sectional reference planes (retropalatal airway [RA], second cervical vertebral airway, oropharyngeal airway and third cervical vertebral airway) were measured. The Maximum negative pressure (Pmax) of the PA was measured at inspiration using CFD, based on a three-dimensional PA model. Intersite differences were determined using analysis of variance and the Friedman test with Bonferroni correction. The relationship between APD and Pmax was evaluated by Spearman correlation coefficients and non-linear regression analysis. RESULTS The smallest PA site was the RA. Pmax was significantly correlated with the APD of the RA (rs = .628, P < .001). The relationship between Pmax and the APD-RA was fitted to a curve, which showed an inversely proportional relationship of Pmax to the square of the APD-RA. Pmax substantially increased even with a slight reduction of the APD-RA. In particular, when the APD-RA was 7 mm or less, Pmax increased greatly, suggesting that PA obstruction was more likely to occur. CONCLUSIONS The results of this study suggest that APD-RA is a useful predictor of good PA ventilation after surgery.
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Affiliation(s)
- Yoshito Shirazawa
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Kazuhiro Ooi
- Department of Oral and Maxillofacial Surgery, School of Medical Science, Kanazawa University Graduate, Kanazawa-City, Japan
| | - Yutaka Kobayashi
- Department of Oral and Maxillofacial Surgery, School of Medical Science, Kanazawa University Graduate, Kanazawa-City, Japan
| | - Ayaka Yanagisawa-Minami
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Yoichiro Oku
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Anna Yokura
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Yuusuke Ban
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Hokuto Suga
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Shuichi Kawashiri
- Department of Oral and Maxillofacial Surgery, School of Medical Science, Kanazawa University Graduate, Kanazawa-City, Japan
| | - Youichi Yamasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
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Yanagisawa-Minami A, Sugiyama T, Iwasaki T, Yamasaki Y. Primary site identification in children with obstructive sleep apnea by computational fluid dynamics analysis of the upper airway. J Clin Sleep Med 2020; 16:431-439. [PMID: 31992411 DOI: 10.5664/jcsm.8224] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA) is a respiratory disorder caused by the obstruction of the upper airway during sleep. The identification of the primary site of OSA is essential to determine treatment strategy. This study aimed to establish computational fluid dynamics (CFD) analysis for determining the clinical severity of OSA and the primary site of OSA. METHODS Twenty children (mean age, 6 years) were divided into OSA and control groups according to their apnea-hypopnea index. Three-dimensional airways were constructed from computed tomography data. The pharyngeal airway morphology and the pressure and velocity of the upper airway were evaluated using CFD analysis. RESULTS The maximum velocity and negative pressure of the upper airway in the OSA group were significantly correlated with the severity of OSA (rs = .741, P < .001; rs = -.653, P = .002). A velocity higher than 12 m/s indicated the primary site of OSA. In addition, we found that the primary site of OSA is not necessarily the same as the collapsible conduit site. CONCLUSIONS CFD analysis allows both the evaluation of the disease severity of OSA and the identification of the primary site of OSA in children. The primary site of OSA is not necessarily the same as the collapsible conduit site; therefore, CFD analysis can be used to identify the appropriate intervention for treating OSA.
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Affiliation(s)
- Ayaka Yanagisawa-Minami
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Sakuragaoka, Kagoshima, Kagoshima, Japan
| | - Takeshi Sugiyama
- Department of Pediatrics, Yamanashi University Graduate School of Medicine, Yamanashi, Japan.,Pediatrics, Ichinomiya-Nishi Hospital, Aichi, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Sakuragaoka, Kagoshima, Kagoshima, Japan
| | - Youichi Yamasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Sakuragaoka, Kagoshima, Kagoshima, Japan
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Nakano H, Mishima K, Suga H, Iwasaki T, Inoue K, Mano T, Yoshimura C, Suzuki K, Imagawa N, Ueno T, Mori Y, Ueyama Y. The Effect of Cranial Change on Oropharyngeal Airway and Breathing During Sleep. J HARD TISSUE BIOL 2020. [DOI: 10.2485/jhtb.29.49] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Katsuaki Mishima
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine
| | - Hokuto Suga
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences
| | - Kazuya Inoue
- Department of Oral Surgery, Osaka Medical College
| | - Takamitsu Mano
- Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University Graduate School
| | - Chikara Yoshimura
- Department of Respiratory Medicine, Faculty of Medicine, Fukuoka University
| | - Kei Suzuki
- Department of Oral Surgery, Osaka Medical College
| | | | - Takaaki Ueno
- Department of Oral Surgery, Osaka Medical College
| | - Yoshihide Mori
- Section of Oral and Maxillofacial Surgery, Division of Maxillofacial Diagnostic and Surgical Sciences, Faculty of Dental Science, Kyushu University
| | - Yoshiya Ueyama
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences
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Matsuo Y, Kumakura H, Shirakura T, Ichikawa K, Funada R, Yagi H, Iwasaki T, Ichikawa S, Kurabayashi M. P1956Geriatric nutritional risk index as predictor for long-term survival and cardiovascular or limb events in peripheral arterial disease patients. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0703] [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
The geriatric nutritional risk index (GNRI) is a simple tool to assess the nutritional risk and associated with mortality. However, there are no reports focusing GNRI in peripheral artery disease (PAD) patients.
Purpose
The purpose of this study was to examine the effects of GNRI for long-term survival, cardiovascular and limb events in PAD patients.
Methods
A prospective cohort study was performed in 1219 PAD patients. Baseline GNRI was calculated from serum albumin level and body-mass-index. The patients were divided into four groups by GNRI level (G1: >98; G2: 92–98; G3: 82–91; G4: <82). The endpoints were overall survival (OS) and freedom from major adverse cardiovascular and limb events (MACE and MACLE).
Results
The median follow-up was 73 months. There were 626 deaths (51.4%) during follow-up. The rate of cardiovascular death among dead was 51.3%. The OS rates markedly depended on GNRI level (p<0.01). The 5-year OS rates were G1: 80.8%, G2: 62.0%, G3: 40.0%, G4: 23.3%, respectively. In multivariate analyses, GNRI, age, low ankle brachial pressure index (ABI), low estimated glomerular filtration rate (eGFR), and high C-reactive protein (CRP) levels were independent factors associated with OS (<0.05). GNRI, age, low ABI, diabetes mellitus, coronary artery disease, lower eGFR and higher CRP levels were associated with MACE and MACLE (p<0.05, respectively). Besides, statins improved OS, MACE, and MACLE (<0.01, respectively).
Conclusions
GNRI was an independent predictor for OS, MACE, and MACLE in PAD patients. Furthermore,statins improved OS, MACE and MACLE in patients with PAD.
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Affiliation(s)
- Y Matsuo
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - H Kumakura
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - T Shirakura
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - K Ichikawa
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - R Funada
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - H Yagi
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - T Iwasaki
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - S Ichikawa
- Kitakanto Cardiovascular Hospital, Cardiology, Shibukawa, Japan
| | - M Kurabayashi
- Gunma University School of Medicine, Department of Cardiovascular Medicine, Maebashi, Japan
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Iwasaki T, Suga H, Minami-Yanagisawa A, Hashiguchi-Sato M, Sato H, Yamamoto Y, Shirazawa Y, Tsujii T, Kanomi R, Yamasaki Y. Upper airway in children with unilateral cleft lip and palate evaluated with computational fluid dynamics. Am J Orthod Dentofacial Orthop 2019; 156:257-265. [PMID: 31375236 DOI: 10.1016/j.ajodo.2018.09.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 09/01/2018] [Accepted: 09/01/2018] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Children with unilateral cleft lip and palate (UCLP) exhibit snoring and mouth breathing. They are also reported to show obstructive sleep apnea syndrome. However, their upper airway ventilation condition is not clearly understood. Therefore, this study was performed to evaluate upper airway ventilation condition in children with UCLP with the use of computational fluid dynamics. METHODS Twenty-one children (12 boys, 9 girls; mean age 9.1 years) with UCLP and 25 children (13 boys, 12 girls; mean age 9.2 years) without UCLP who required orthodontic treatment underwent cone-beam computed tomography (CBCT). Nasal resistance and upper airway ventilation condition were evaluated with the use of computational fluid dynamics from CBCT data. The groups were compared with the use of Mann-Whitney U tests and Student t tests. RESULTS Nasal resistance of the UCLP group (0.97 Pa/cm3/s) was significantly higher than that of the control group (0.26 Pa/cm3/s; P < 0.001). Maximal pressure of the upper airway (335.02 Pa) was significantly higher in the UCLP group than in the control group (67.57 Pa; P < 0.001). Pharyngeal airway (from choanae to base of epiglottis) pressure in the UCLP group (140.46 Pa) was significantly higher than in the control group (15.92 Pa; P < 0.02). CONCLUSIONS Upper airway obstruction in children with UCLP resulted from both nasal and pharyngeal airway effects.
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Affiliation(s)
- Tomonori Iwasaki
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan.
| | - Hokuto Suga
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Ayaka Minami-Yanagisawa
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Makiko Hashiguchi-Sato
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Hideo Sato
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Yuushi Yamamoto
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Yoshito Shirazawa
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Toshiya Tsujii
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | | | - Youichi Yamasaki
- Field of Developmental Medicine, Health Research Course, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
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Iwasaki T, Yanagisawa‐Minami A, Suga H, Shirazawa Y, Tsujii T, Yamamoto Y, Ban Y, Sato‐Hashiguchi M, Sato H, Kanomi R, Yamasaki Y. Cover Image. Orthod Craniofac Res 2019. [DOI: 10.1111/ocr.12334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kinouchi M, Iwasaki T, Koyama M, Obata M, Homma M. Image Gallery: Cutaneous hydrophilic polymer emboli following thoracic endovascular aortic repair. Br J Dermatol 2019; 180:e182. [DOI: 10.1111/bjd.17758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Kinouchi
- Department of Dermatology Asahikawa Red Cross Hospital AsahikawaJapan
| | - T. Iwasaki
- Department of Dermatology Asahikawa Medical University Asahikawa Japan
| | - M. Koyama
- Department of Cardiovascular Surgery Asahikawa Red Cross Hospital AsahikawaJapan
| | - M. Obata
- Department of Diagnostic Pathology Asahikawa Red Cross Hospital Asahikawa Japan
| | - M. Homma
- Department of Dermatology Asahikawa Medical University Asahikawa Japan
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29
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Iwasaki T, Yanagisawa-Minami A, Suga H, Shirazawa Y, Tsujii T, Yamamoto Y, Ban Y, Sato-Hashiguchi M, Sato H, Kanomi R, Yamasaki Y. Rapid maxillary expansion effects of nasal airway in children with cleft lip and palate using computational fluid dynamics. Orthod Craniofac Res 2019; 22:201-207. [PMID: 30912603 DOI: 10.1111/ocr.12311] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/06/2019] [Accepted: 03/18/2019] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Rapid maxillary expansion (RME) improves nasal airway ventilation in non-cleft palate children. Children with unilateral cleft lip and palate (UCLP) may have nasal obstruction and experience an increased risk of obstructive sleep apnoea. The effect of RME in UCLP children is unclear. This retrospective study evaluated RME-induced changes in ventilation parameters in children with UCLP using computational fluid dynamics. SETTING AND SAMPLE POPULATION Nineteen patients (10 boys, mean age 10.7 years) who required RME had cone-beam computed tomography images taken before and after RME. Twenty control participants (11 boys, mean age 11.1 years) received regular orthodontic treatment. METHODS Nasal airway ventilation parameters (air pressure, air velocity and airflow rate) were analysed via computational fluid dynamics, and nasal cross-sectional area (CSA) was measured. RESULTS Maximum pressure, velocity and nasal resistance were significantly reduced by RME in the UCLP group. Air flow rate and CSA on the cleft side significantly were increased by RME in the UCLP group. CONCLUSIONS In children with UCLP, increasing the quantity of airflow and CSA on the cleft side by RME substantially improved nasal ventilation.
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Affiliation(s)
- Tomonori Iwasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Ayaka Yanagisawa-Minami
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Hokuto Suga
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Yoshito Shirazawa
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Toshiya Tsujii
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Yuushi Yamamoto
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Yuusuke Ban
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Makiko Sato-Hashiguchi
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Hideo Sato
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | | | - Youichi Yamasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
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30
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Suga H, Iwasaki T, Mishima K, Nakano H, Ueyama Y, Yamasaki Y. Evaluation of the effect of oral appliance treatment on upper-airway ventilation conditions in obstructive sleep apnea using computational fluid dynamics. Cranio 2019; 39:209-217. [DOI: 10.1080/08869634.2019.1596554] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Hokuto Suga
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Katsuaki Mishima
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Hiroyuki Nakano
- Department of Dentistry and Oral Surgery, Division of Medicine for Function and Morphology of Sensory Organs, Faculty of Medicine, Osaka Medical College, Osaka, JAPAN
| | - Yoshiya Ueyama
- Department of Oral and Maxillofacial Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Youichi Yamasaki
- Department of Pediatric Dentistry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Iwasaki T, Suga H, Yanagisawa‐Minami A, Sato H, Sato‐Hashiguchi M, Shirazawa Y, Tsujii T, Yamamoto Y, Kanomi R, Yamasaki Y. Cover Image. Orthod Craniofac Res 2019. [DOI: 10.1111/ocr.12280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Iwasaki T, Suga H, Yanagisawa‐Minami A, Sato H, Sato‐Hashiguchi M, Shirazawa Y, Tsujii T, Yamamoto Y, Kanomi R, Yamasaki Y. Relationships among tongue volume, hyoid position, airway volume and maxillofacial form in paediatric patients with Class‐I, Class‐
II
and Class‐
III
malocclusions. Orthod Craniofac Res 2018; 22:9-15. [DOI: 10.1111/ocr.12251] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/27/2018] [Accepted: 10/21/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Tomonori Iwasaki
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | - Hokuto Suga
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | - Ayaka Yanagisawa‐Minami
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | - Hideo Sato
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | - Makiko Sato‐Hashiguchi
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | - Yoshito Shirazawa
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | - Toshiya Tsujii
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | - Yuushi Yamamoto
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
| | | | - Youichi Yamasaki
- Department of Pediatric DentistryGraduate School of Medical and Dental SciencesKagoshima University Kagoshima‐City Japan
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Masuyama Y, Mizuno K, Ozawa H, Ishiwata H, Hatano Y, Ohshima T, Iwasaki T, Hatano M. Extending coherence time of macro-scale diamond magnetometer by dynamical decoupling with coplanar waveguide resonator. Rev Sci Instrum 2018; 89:125007. [PMID: 30599584 DOI: 10.1063/1.5047078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Ultimate sensitivity for quantum magnetometry using nitrogen-vacancy (NV) centers in a diamond is limited by a number of NV centers and coherence time. Microwave irradiation with a high and homogeneous power density for a large detection volume is necessary to achieve a highly sensitive magnetometer. Here, we demonstrate a microwave resonator to enhance the power density of the microwave field and an optical system with a detection volume of 1.4 × 10-3 mm3. The strong microwave field enables us to achieve 48 ns Rabi oscillation which is sufficiently faster than the phase relaxation time of NV centers. This system combined with a decoupling pulse sequence, XY16, extends the spin coherence time (T 2) up to 27 times longer than that with a spin echo method. Consequently, we obtained an AC magnetic field sensitivity of 10.8 pt/ Hz using the dynamical decoupling pulse sequence.
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Affiliation(s)
- Y Masuyama
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - K Mizuno
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - H Ozawa
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - H Ishiwata
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Y Hatano
- Institute for Protein Research, Osaka University, Yamadaoka, Suita, Osaka 5650871, Japan
| | - T Ohshima
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma 370-1292, Japan
| | - T Iwasaki
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - M Hatano
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Sawada A, Iwasaki T, Takagi M. Fine‐scale spatial genetic structure in the Minami‐daito Island population of the Ryukyu scops owl
Otus elegan
s. J Zool (1987) 2018. [DOI: 10.1111/jzo.12634] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- A. Sawada
- Department of Natural History Science Graduate School of Science Hokkaido University Sapporo Japan
| | - T. Iwasaki
- Department of Biology and Geosciences Graduate School of Science Osaka City University Osaka Japan
| | - M. Takagi
- Department of Natural History Science Graduate School of Science Hokkaido University Sapporo Japan
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Brandenburg F, Nagumo R, Saichi K, Tahara K, Iwasaki T, Hatano M, Jelezko F, Igarashi R, Yatsui T. Improving the electron spin properties of nitrogen-vacancy centres in nanodiamonds by near-field etching. Sci Rep 2018; 8:15847. [PMID: 30367130 PMCID: PMC6203751 DOI: 10.1038/s41598-018-34158-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 10/10/2018] [Indexed: 11/20/2022] Open
Abstract
The nitrogen-vacancy (NV) centre in diamond is a promising candidate for quantum computing applications and magnetic sensing applications, because it is an atomic-scale defect with stable coherence time (T2) and reliable accessibility at room temperature. We demonstrated a method for improving the NV spin properties (the full width half maximum (FWHM) value of the magnetic resonance spectrum and T2) through a near-field (NF) etching method under ambient conditions. The NF etching method, based on a He-Cd ultraviolet laser (325 nm), which is longer than the absorption edge of the oxygen molecule, enabled selective removal of defects on the nanodiamond surface. We observed a decrease in the FWHM value close to 15% and an increase in T2 close to 25%. Since our technique can be easily reproduced, a wide range of NV centre applications could be improved, especially magnetic sensing applications. Our results are especially attractive, because they have been obtained under ambient conditions and only require a light source with wavelength slightly above the O2 absorption edge.
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Grants
- 18H01470 Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
- 17H01262 Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
- 26286022 Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
- 12024046 Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
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Affiliation(s)
- F Brandenburg
- School of Engineering, University of Tokyo, Tokyo, Japan
| | - R Nagumo
- School of Engineering, University of Tokyo, Tokyo, Japan
| | - K Saichi
- School of Engineering, University of Tokyo, Tokyo, Japan
| | - K Tahara
- Tokyo Institute of Technology, Tokyo, Japan
| | - T Iwasaki
- Tokyo Institute of Technology, Tokyo, Japan
| | - M Hatano
- Tokyo Institute of Technology, Tokyo, Japan
| | - F Jelezko
- Institute of Quantum Optics, Ulm University, Ulm, Germany
| | - R Igarashi
- QST Future Laboratory, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
- National Institute of Radiological Sciences (NIRS), National Institutes for Quantum and Radiological Science and Technology (QST), Chiba, Japan
| | - T Yatsui
- School of Engineering, University of Tokyo, Tokyo, Japan.
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Hasegawa-Moriyama M, Iwasaki T, Mukaihara K, Masuda M, Kanmura Y. Unsuccessful tracheal intubation in a patient with Kniest dysplasia undergoing repeated general anesthesia: a case report. JA Clin Rep 2018; 4:41. [PMID: 32025981 PMCID: PMC6966974 DOI: 10.1186/s40981-018-0178-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 05/11/2018] [Indexed: 01/15/2023] Open
Abstract
Background Kniest dysplasia is a type of chondrodysplasia characterized by severe craniofacial abnormalities including tracheomalacia, midface hypoplasia, and cleft palate. Case presentation We previously described a 6-year-old girl with Kniest dysplasia, in whom glottic edema rapidly developed after tracheal intubation. At the age of 13 years, a reoperation was scheduled to correct talipes equinovarus but was subsequently canceled due to failure of tracheal intubation and subsequent glottic edema. Airway evaluation by endoscopy and computed tomography 1 month later revealed severe laryngeal narrowing. Therefore, the second anesthesia was maintained with spinal anesthesia combined with sciatic nerve block without tracheal intubation. Conclusion Careful perioperative airway evaluation is required in patients with Kniest dysplasia, and alternative strategies for airway management other than tracheal intubation should be considered.
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Affiliation(s)
- Maiko Hasegawa-Moriyama
- Department of Anesthesiology and Critical Care Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8520, Japan.
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8520, Japan
| | - Keika Mukaihara
- Department of Anesthesiology and Critical Care Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8520, Japan
| | - Mina Masuda
- Department of Anesthesiology and Critical Care Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8520, Japan
| | - Yuichi Kanmura
- Department of Anesthesiology and Critical Care Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8520, Japan
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Mukaihara K, Hasegawa-Moriyama M, Iwasaki T, Yamasaki Y, Kanmura Y. Evaluation of the pharyngeal airway using computational fluid dynamics in patients with acromegaly. Laryngoscope Investig Otolaryngol 2018; 3:133-138. [PMID: 29721547 PMCID: PMC5915828 DOI: 10.1002/lio2.151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/06/2018] [Accepted: 03/01/2018] [Indexed: 12/11/2022] Open
Abstract
Objectives Perioperative airway management may be particularly challenging in patients with acromegaly undergoing trans‐sphenoidal pituitary surgery (TSS). Management for airway obstruction is required prior to pituitary surgery to minimize perioperative hypoxia. The purpose of this retrospective study was to evaluate airway obstruction by simulation of computational fluid dynamics (CFD) using computed tomography (CT) images in patients who had undergone TSS. Methods CT images of the nasopharyngeal airways of patients with acromegaly (n = 5) or nonfunctional pituitary adenoma (n = 6) undergoing TSS from April 2012 to January 2017 were used to construct these airways in three dimensions. Estimated airflow pressure and velocity in the retropalatal airway (RA), oropharyngeal airway (OA), and hypopharyngeal airway (HA) were simulated using CFD. Results Estimated pharyngeal airflow pressure in the HA, OA, and RA was significantly greater in patients with acromegaly than in those with nonfunctional pituitary adenomas whereas the estimated pharyngeal airflow velocity was significantly impaired only in the RA of patients with acromegaly. Minimum postoperative SpO2 both within 3 hours and from 3 to 12 hours after the end of anesthesia was significantly lower in the patients with acromegaly. Additionally, estimated volume of tongue and pharyngeal airflow pressure in the HA, OA, and RA correlated with minimum postoperative SpO2. Conclusion Pharyngeal airflow pressure estimated from CT images is high in patients with acromegaly, and these values correlate with postoperative minimum values for SpO2. Preoperative evaluation of CT images by CFD can predict difficulty in airway management and perioperative hypoxia. Level of Evidence 4.
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Affiliation(s)
- Keika Mukaihara
- Department of Anesthesiology and Critical Care Medicine Graduate School of Medical and Dental Sciences, Kagoshima University Kagoshima Japan
| | - Maiko Hasegawa-Moriyama
- Department of Anesthesiology and Critical Care Medicine Graduate School of Medical and Dental Sciences, Kagoshima University Kagoshima Japan
| | - Tomonori Iwasaki
- Department of Pediatric Dentistry Graduate School of Medical and Dental Sciences, Kagoshima University Kagoshima Japan
| | - Youichi Yamasaki
- Department of Pediatric Dentistry Graduate School of Medical and Dental Sciences, Kagoshima University Kagoshima Japan
| | - Yuichi Kanmura
- Department of Anesthesiology and Critical Care Medicine Graduate School of Medical and Dental Sciences, Kagoshima University Kagoshima Japan
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Iwasaki T, Sato H, Suga H, Takemoto Y, Inada E, Saitoh I, Kakuno K, Kanomi R, Yamasaki Y. Influence of pharyngeal airway respiration pressure on Class II mandibular retrusion in children: A computational fluid dynamics study of inspiration and expiration. Orthod Craniofac Res 2018; 20:95-101. [PMID: 28414873 DOI: 10.1111/ocr.12145] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To examine the influence of negative pressure of the pharyngeal airway on mandibular retraction during inspiration in children with nasal obstruction using the computational fluid dynamics (CFD) method. SETTING AND SAMPLE POPULATION Sixty-two children were divided into Classes I, II (mandibular retrusion) and III (mandibular protrusion) malocclusion groups. MATERIAL AND METHODS Cone-beam computed tomography data were used to reconstruct three-dimensional shapes of the nasal and pharyngeal airways. Airflow pressure was simulated using CFD to calculate nasal resistance and pharyngeal airway pressure during inspiration and expiration. RESULTS Nasal resistance of the Class II group was significantly higher than that of the other two groups, and oropharyngeal airway inspiration pressure in the Class II (-247.64 Pa) group was larger than that in the Class I (-43.51 Pa) and Class III (-31.81 Pa) groups (P<.001). The oropharyngeal airway inspiration-expiration pressure difference in the Class II (-27.38 Pa) group was larger than that in the Class I (-5.17 Pa) and Class III (0.68 Pa) groups (P=.006). CONCLUSION Large negative inspiratory pharyngeal airway pressure due to nasal obstruction in children with Class II malocclusion may be related to their retrognathia.
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Affiliation(s)
- T Iwasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - H Sato
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - H Suga
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Y Takemoto
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - E Inada
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - I Saitoh
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Niigata University, Niigata-City, Japan
| | - K Kakuno
- Kanomi Orthodontic Office, Himeji-City, Japan
| | - R Kanomi
- Kanomi Orthodontic Office, Himeji-City, Japan
| | - Y Yamasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
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Otsuki J, Iwasaki T, Katada Y, Tsutsumi Y, Tsuji Y, Furuhashi K, Kokeguchi S, Shiotani M. A higher incidence of cleavage failure in oocytes containing smooth endoplasmic reticulum clusters. J Assist Reprod Genet 2018; 35:899-905. [PMID: 29357025 DOI: 10.1007/s10815-018-1119-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 01/05/2018] [Indexed: 11/29/2022] Open
Abstract
PURPOSE In human oocytes, sERCs are one of the dysmorphic phenotypes that have been reported. Significantly reduced pregnancy rates and a comparatively higher number of abnormities in live births appear to be associated with the presence of sERCs in oocytes. However, some reports have shown that healthy babies can be born, without any reduced pregnancy rates, from oocytes observed to contain sERCs. Thus, the clinical and scientific significance of oocytes that harbor sERCs remains controversial. METHODS The presence of sERCs was evaluated using a time-lapse system while studying the dynamic changes within oocytes and embryos. Logistic regression analysis was carried out to explore the independent variables for meiotic and mitotic cleavage failure.. RESULTS The incidence of mitotic cleavage failure and the incidence of meiotic cleavage failure during the second polar body extrusion in oocytes with sERCs were found to be significantly higher than that in oocytes without sERCs. Furthermore, ICSI was found to have a greater frequency of meiotic failure than IVF. CONCLUSIONS In cases of cleavage failure, an embryonic cell could become tetraploid and may induce abnormal chromosomal configurations. Some cells exposed to cleavage failure may become trophectoderm cells and form placental abnormalities. Even if they develop into trophectoderm cells, the ICM can be susceptible to further cleavage failure and may in turn cause further aneuploidy. For these reasons, it is important to monitor pregnancies and births derived from oocytes that contained sERCs.
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Affiliation(s)
- Junko Otsuki
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan. .,Assisted Reproductive Technology Center, Okayama University, 1-1-1 Tsushimanaka, Kita, Okayama, Okayama, 700-0082, Japan.
| | - T Iwasaki
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan
| | - Y Katada
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan
| | - Y Tsutsumi
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan
| | - Y Tsuji
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan
| | - K Furuhashi
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan
| | - S Kokeguchi
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan
| | - M Shiotani
- Hanabusa Women's Clinic, Sannomiya Central Building 2,7,8F 1-1-2 Sannomiya, Chuo, Kobe, Hyogo, 650-0021, Japan
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Maniwa T, Shintani Y, Okami J, Ohta M, Takeuchi Y, Takami K, Yokouchi H, Kurokawa E, Kanzaki R, Sakamaki Y, Shiono H, Iwasaki T, Nishioka K, Kodama K, Okumura M. MA 17.04 Initial Surgery in Patients with Clinical N2 Non-Small Cell Lung Cancer: A Multi-Institution Retrospective Study. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jingami N, Uemura K, Asada M, Kuzuya A, Yamada S, Ishikawa M, Kawahara T, Iwasaki T, Atuchi M, Takahashi R, Kinoshita A. Predicting dynamics of cerebrospinal fluid biomarkers by tap test in idiopathic normal pressure hydrocephalus. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Iwasaki T, Sato H, Suga H, Takemoto Y, Inada E, Saitoh I, Kakuno E, Kanomi R, Yamasaki Y. Authors' response. Am J Orthod Dentofacial Orthop 2017; 152:442-443. [PMID: 28962718 DOI: 10.1016/j.ajodo.2017.07.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 06/13/2017] [Accepted: 07/03/2017] [Indexed: 11/19/2022]
Affiliation(s)
| | | | | | | | - Emi Inada
- Kagoshima, Niigata, and Himeji, Japan
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Akamatsu S, Otsuki J, Fujii M, Enatsu N, Tsuji Y, Iwasaki T, Shiotani M. The poor quality of women’s sleep negatively influences fertilization rates in assisted reproductive technology. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Iwasaki T, Sato H, Suga H, Minami A, Yamamoto Y, Takemoto Y, Inada E, Saitoh I, Kakuno E, Kanomi R, Yamasaki Y. Herbst appliance effects on pharyngeal airway ventilation evaluated using computational fluid dynamics. Angle Orthod 2017; 87:397-403. [PMID: 28121164 DOI: 10.2319/080616-603.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To evaluate the effect of a Herbst appliance on ventilation of the pharyngeal airway (PA) using computational fluid dynamics (CFD). MATERIALS AND METHODS Twenty-one Class II patients (10 boys; mean age, 11.7 years) who required Herbst therapy with edgewise treatment underwent cone-beam computed tomography (CBCT) before and after treatment. Nineteen Class I control patients (8 boys; mean age, 11.9 years) received edgewise treatment alone. The pressure and velocity of the PA were compared between the groups using CFD based on three-dimensional CBCT images of the PA. RESULTS The change in oropharyngeal airway velocity in the Herbst group (1.95 m/s) was significantly larger than that in the control group (0.67 m/s). Similarly, the decrease in laryngopharyngeal airway velocity in the Herbst group (1.37 m/s) was significantly larger than that in the control group (0.57 m/s). CONCLUSION The Herbst appliance improves ventilation of the oropharyngeal and laryngopharyngeal airways. These results may provide a useful assessment of obstructive sleep apnea treatment during growth.
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Tsuji Y, Iwasaki T, Ogata H, Matsumoto Y, Kokeguchi S, Matsumura K, Hyon SH, Shiotani M. The Beneficial Effect of Carboxylated Poly-L-Lysine on Cryosurvival of Vitrified Early Stage Embryos. Cryo Letters 2017; 38:1-6. [PMID: 28376134] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND In the vitrification of embryos, dimethyl sulfoxide (DMSO) is one of the most effective cryoprotectant agents (CPAs), but cytotoxic effects of DMSO on embryos are well known. Carboxylated poly-L-lysine (CPLL) has been identified as an effective cryoprotectant of cultured cell lines and mammalian oocytes. OBJECTIVE To evaluate the efficacy and safety of CPLL as a CPA for developmental stage embryos. MATERIALS AND METHODS Mouse 8-cell embryos and blastocysts were vitrified with ethylene glycol (EG), DMSO/EG, or CPLL/EG and the developmental potency assessed in vitro. RESULTS In 8-cell embryos, there were no differences between the levels of survival and developmental progress into the blastocyst stage in each solution. At the blastocyst stage, the proportion of dead cells was significantly higher in the EG compared with other solutions. In contrast, there were no differences between the DMSO/EG and CPLL/EG. CONCLUSION These results indicate that CPLL can be used as a replacement for DMSO in the vitrification of mouse embryos.
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Affiliation(s)
- Y Tsuji
- Hanabusa Women's Clinic, Kobe city, Hyogo, Japan.
| | - T Iwasaki
- Hanabusa Women's Clinic, Kobe city, Hyogo, Japan
| | - H Ogata
- Hanabusa Women's Clinic, Kobe city, Hyogo, Japan
| | - Y Matsumoto
- Hanabusa Women's Clinic, Kobe city, Hyogo, Japan
| | - S Kokeguchi
- Hanabusa Women's Clinic, Kobe city, Hyogo, Japan
| | - K Matsumura
- School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa, Japan
| | - S H Hyon
- Center for Fiber and Textile Science Kyoto Institute of Technology (KIT), Kyoto Fushimi-ku, Kyoto, Japan
| | - M Shiotani
- Hanabusa Women's Clinic, Kobe city, Hyogo, Japan
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Ogino H, Fujimichi Y, Sasaki M, Hamada N, Iwasaki T, Yoshida K, Hattori T. Quantitative assessment of provability of radiation-related cancers considering unavoidable existence of unadjusted risk factors. J Radiol Prot 2016; 36:865-884. [PMID: 27739409 DOI: 10.1088/0952-4746/36/4/865] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The attribution of stochastic effects to exposure to ionizing radiation has been qualitatively discussed by introducing two distinct concepts of provability and probability. This study aims to develop a method of quantitatively assessing the provability of radiation-related cancers. To this end, the 'minimum provable dose' (MPD) was developed and applied to actual cancer mortality in Japan. The background lifetime risk of cancer mortality was calculated for the esophagus, stomach, colon, liver, lungs, skin, breasts, ovaries, bladder, and bone marrow as well as the age-specific risk coefficients reproducing those given in the 2007 Recommendations of the International Commission on Radiological Protection (ICRP). Comparing the relative ratio of MPDs, which was defined herein as the 'provability index' (PI), we quantitatively ranked radiation-related cancers for different tissues and organs predicated on provability for ages of 10, 30, 50, and 0-85+ years at exposure. We discuss the radiological protection of male emergency workers focusing on cancers highly prioritized according to the ranking (i.e. colon, bone marrow, and bladder). The present study proposed the system to quantitatively evaluate the level of radiological protection taking into account the variations of the background cancer risk on the provability of radiation-related cancers.
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Affiliation(s)
- H Ogino
- Radiation Safety Research Center, Nuclear Technology Research Laboratory, Central Research Institute of Electric Power Industry, 2-11-1, Iwado Kita, Komae-shi, Tokyo 201-8511, Japan
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Hashimoto N, Uchiyama S, Kitano M, Nakazawa T, Iwasaki T, Hashimoto T. THU0348 Assessment of Submandibular Gland Ultrasonography in Early-Stage Sjögren's Syndrome. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.1469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yokoyama Y, Iwasaki T, Satake A, Shibasaki S, Karasaki M, Moriya N, Kitano S, Matsui K, Sano H. FRI0061 Involvement of Regulatory T Cells and Micrornas in Regulation of Collagen-Induced Arthritis in Mice Treated with IL-2/anti-IL-2 Immune Complexes. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Liu SYC, Huon LK, Iwasaki T, Yoon A, Riley R, Powell N, Torre C, Capasso R. Efficacy of Maxillomandibular Advancement Examined with Drug-Induced Sleep Endoscopy and Computational Fluid Dynamics Airflow Modeling. Otolaryngol Head Neck Surg 2016; 154:189-95. [PMID: 26740522 DOI: 10.1177/0194599815611603] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES To use drug-induced sedation endoscopy (DISE) and computational fluid dynamics (CFD) modeling to study dynamic airway and airflow changes after maxillomandibular advancement (MMA), and how the changes correlate with surgical success based on polysomnography parameters. STUDY DESIGN Retrospective cohort study. SETTING University medical center. METHODS DISE was rated with the VOTE (velum, oropharynx, tongue, epiglottis) classification, and CFD was used to model airflow velocity and negative pressure exerted on pharyngeal wall. Changes in VOTE score by site and CFD measurements were correlated with perioperative polysomnography outcomes of apnea-hypopnea index (AHI), apnea index (AI), oxygenation desaturation index (ODI), and lowest oxygen saturation. RESULTS After MMA, 20 subjects (17 males, 3 females) with a mean age of 44 ± 12 years and body mass index of 27.4 ± 4.6 kg/m(2) showed mean decreases in AHI (53.6 ± 26.6 to 9.5 ± 7.4 events/h) and ODI (38.7 ± 30.3 to 8.1 ± 9.2 events/h; P < .001). Improvement in lateral pharyngeal wall collapse during DISE based on VOTE score correlated with the most decrease in AHI (60.0 ± 25.6 to 7.5 ± 3.4 events/h) and ODI (46.7 ± 29.8 to 5.3 ± 2 events/h; P = .002). CFD modeling showed significant positive Pearson correlations between reduction of retropalatal airflow velocity and AHI (r = 0.617, P = .04) and ODI (r = 0.773, P = .005). CONCLUSION AHI and ODI improvement after MMA is best correlated with (1) decreased retropalatal airflow velocity modeled by CFD and (2) increased lateral pharyngeal wall stability based on VOTE scoring from DISE.
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Affiliation(s)
- Stanley Yung-Chuan Liu
- Division of Sleep Surgery, Department of Otolaryngology Head and Neck Surgery, Stanford Hospital and Clinics, Stanford, California, USA School of Medicine, Stanford University, Stanford, California, USA
| | - Leh-Kiong Huon
- School of Medicine, Stanford University, Stanford, California, USA Department of Otolaryngology, Head and Neck Surgery, Cathay General Hospital, Taipei, Taiwan School of Medicine, Fu Jen Catholic University, Taipei, Taiwan
| | - Tomonori Iwasaki
- Field of Development Medicine, Health Research Course, Graduate School of Medicine and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Audrey Yoon
- School of Medicine, Stanford University, Stanford, California, USA
| | - Robert Riley
- Division of Sleep Surgery, Department of Otolaryngology Head and Neck Surgery, Stanford Hospital and Clinics, Stanford, California, USA
| | - Nelson Powell
- Division of Sleep Surgery, Department of Otolaryngology Head and Neck Surgery, Stanford Hospital and Clinics, Stanford, California, USA
| | - Carlos Torre
- Division of Sleep Surgery, Department of Otolaryngology Head and Neck Surgery, Stanford Hospital and Clinics, Stanford, California, USA
| | - Robson Capasso
- Division of Sleep Surgery, Department of Otolaryngology Head and Neck Surgery, Stanford Hospital and Clinics, Stanford, California, USA
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Kobayashi Y, Iwasaki T. Silica-coating of nitrogen-doped titanium oxide particles and their electrical conductivity. ADV POWDER TECHNOL 2016. [DOI: 10.1016/j.apt.2015.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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