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Yoshida H, Ishikawa H, Himejima A, Ikeda H, Tani M, Taniguchi R, Iseki T, Tsutsumi Y. Transmission electron microscopic study of the surface layer of surgical resected disc specimens in human temporomandibular joint. Med Mol Morphol 2024; 57:76-81. [PMID: 38071257 DOI: 10.1007/s00795-023-00376-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 11/02/2023] [Indexed: 02/27/2024]
Abstract
In this study, we investigated specific and characteristic findings of the surface layer of surgical resected disc specimens in human temporomandibular joint osteoarthritis cases by transmission electron microscopy (TEM).Specimens were surgically removed from the TMJ of 5 cases (4 female patients: 5 cases) clinically osteoarthritis. Following findings were observed by TEM. Images were photographed on a JEM1400-Flash Electron microscope (JEOL, Japan) equipped with an EM-14661FLASH high-sensitivity digital complementary metal-oxide-semiconductor camera.Following findings were observed by TEM. 1) The surface is covered with plump fibroblastic and histiocytoid cells. 2) Collagen fiber bundles and collagenous matrix are exposed onto the eroded disc surface. 3) Fibrinous dense material is observed on the eroded disc surface. 4) Bundles of collagen fibers are densely observed. 5) Collagen bundles are rich around capillary vessels. 6) Synovial surface cells reveal features of activated macrophages with vacuole formation. Especially, plump fibroblastic and histiocytoid cells, and activated macrophages with vacuole, which were significant findings of the surface layer. These findings might have a significant effect on the regulation of synovial fluid.
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Affiliation(s)
- Hiroaki Yoshida
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka, 540-0008, Japan.
| | - Hiroki Ishikawa
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka, 540-0008, Japan
| | - Akio Himejima
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka, 540-0008, Japan
| | - Hayato Ikeda
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka, 540-0008, Japan
| | - Mitsuru Tani
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka, 540-0008, Japan
| | - Ryoji Taniguchi
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka, 540-0008, Japan
| | - Tomio Iseki
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, 1-5-17, Otemae, Chuo-ku, Osaka, 540-0008, Japan
| | - Yutaka Tsutsumi
- Diagnostic Pathology Clinic, Pathos Tsutsumi, 1551-1 Sankichi-ato, Yawase-cho, Inazawa, Aichi, 492-8342, Japan
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Yamagata K, Shinozuka K, Ogisawa S, Himejima A, Azaki H, Nishikubo S, Sato T, Suzuki M, Tanuma T, Tonogi M. A preoperative predictive study of advantages of airway changes after maxillomandibular advancement surgery using computational fluid dynamics analysis. PLoS One 2021; 16:e0255973. [PMID: 34379704 PMCID: PMC8357109 DOI: 10.1371/journal.pone.0255973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 07/27/2021] [Indexed: 11/18/2022] Open
Abstract
The purpose of this study was to develop a simulation approach for predicting maxillomandibular advancement-induced airway changes using computational fluid dynamics. Eight patients with jaw deformities who underwent maxillomandibular advancement and genioglossus advancement surgery were included in this study. Computed tomography scans and rhinomanometric readings were performed both preoperatively and postoperatively. Computational fluid dynamics models were created, and airflow simulations were performed using computational fluid dynamics software; the preferable number of computational mesh points was at least 10 million cells. The results for the right and left nares, including simulation and postoperative measurements, were qualitatively consistent, and surgery reduced airflow pressure loss. Geometry prediction simulation results were qualitatively consistent with the postoperative stereolithography data and postoperative simulation results. Simulations were performed with either the right or left naris blocked, and the predicted values were similar to those found clinically. In addition, geometry prediction simulation results were qualitatively consistent with the postoperative stereolithography data and postoperative simulation results. These findings suggest that geometry prediction simulation facilitates the preoperative prediction of the postoperative structural outcome.
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Affiliation(s)
- Kanako Yamagata
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan.,Laboratory of Fluid-Structural Simulation and Design, Strategic Innovation and Research Center, Teikyo University, Tokyo, Japan
| | - Keiji Shinozuka
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
| | - Shouhei Ogisawa
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
| | - Akio Himejima
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | - Hiroaki Azaki
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
| | - Shuichi Nishikubo
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
| | - Takako Sato
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
| | - Masaaki Suzuki
- Department of Otolaryngology, Teikyo University Chiba Medical Center, Chiba, Japan
| | - Tadashi Tanuma
- Laboratory of Fluid-Structural Simulation and Design, Strategic Innovation and Research Center, Teikyo University, Tokyo, Japan
| | - Morio Tonogi
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry, Tokyo, Japan
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Ohshita N, Yamagata K, Himejima A, Kaneda K, Yasutome T, Matsuda Y, Tsutsumi YM, Momota Y. Anesthetic Management of a Patient With Restless Legs Syndrome: A Case Report. Anesth Prog 2021; 67:226-229. [PMID: 33393604 DOI: 10.2344/anpr-67-02-10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 04/20/2020] [Indexed: 11/11/2022] Open
Abstract
Restless legs syndrome (RLS) is a neurological sensory disorder associated with sensory and motor symptoms that most commonly occur at night and during periods of rest. It is characterized by altered or abnormal sensations primarily in the legs and the urge to move the associated limbs. Perioperative procedures, including general anesthesia, can cause exacerbations of RLS. This is a case report of a suspected RLS exacerbation in a 22-year-old woman who had no formal diagnosis of RLS despite reporting symptoms that met all essential diagnostic criteria by the International RLS Study Group. Despite her previous diagnoses of dehydration induced-muscle pain or nocturnal cramps, we suspected her to have RLS. The patient underwent general anesthesia for a bilateral sagittal split ramus osteotomy using a combined inhalational and intravenous anesthetic technique with sevoflurane, propofol, remifentanil, and dexmedetomidine. After successful completion of the surgery and returning to the ward, she began moving her lower extremities and complaining of unpleasant sensations in both ankles. Bed rest exacerbated the suspected RLS symptoms despite a continuous infusion of dexmedetomidine. The RLS symptoms continued to worsen and spread to her upper extremities. After increasing the dexmedetomidine infusion from 0.2 to 0.4 μg/kg/h, almost all symptoms improved, and she slept for 3 hours. Upon awakening, the unpleasant sensations were completely relieved by walking and stretching. The patient was formally diagnosed with RLS by a neurologist after discharge. In this case, an infusion of dexmedetomidine was helpful in successfully managing a suspected exacerbation of RLS.
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Affiliation(s)
- Naohiro Ohshita
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
| | - Koji Yamagata
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
| | - Akio Himejima
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | - Kazuhiro Kaneda
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
| | | | - Yoshiko Matsuda
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
| | - Yasuo M Tsutsumi
- Department of Anesthesiology and Critical Care, Hiroshima University, Hiroshima, Japan
| | - Yoshihiro Momota
- Department of Anesthesiology, Osaka Dental University, Osaka, Japan
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Ogisawa S, Shinozuka K, Aoki J, Yanagawa K, Himejima A, Nakamura R, Yamagata K, Sato T, Suzuki M, Tanuma T, Tonogi M. Computational fluid dynamics analysis for the preoperative prediction of airway changes after maxillomandibular advancement surgery. J Oral Sci 2019; 61:398-405. [PMID: 31327806 DOI: 10.2334/josnusd.18-0130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 11/01/2022]
Abstract
Maxillomandibular advancement surgery is useful for treatment of sleep apnea. However, preoperative analysis and evaluation to facilitate decision-making regarding the direction and distance of maxillomandibular movement has primarily consisted of morphological analysis; physiological function is not evaluated. To improve preoperative prediction, this study used fluid simulation to investigate the characteristics and effects of airway changes associated with maxillomandibular movement. A one-dimensional model with general applicability was thus developed. Actual measurements of flow in patients were used in this fluid simulation, thus achieving an analysis closer to clinical conditions. The simulation results were qualitatively consistent with the actual measurements, which confirmed the usefulness of the simulation. In addition, the results of the one-dimensional model were within the error ranges of the actual measurements. The present results establish a foundation for using accumulating preoperative measurement data for more-precise prediction of postoperative outcomes.
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Affiliation(s)
- Shouhei Ogisawa
- Division of Oral Structural and Functional Biology, Nihon University Graduate School of Dentistry
| | - Keiji Shinozuka
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry
| | - Junya Aoki
- Division of Oral Structural and Functional Biology, Nihon University Graduate School of Dentistry
| | - Keiichi Yanagawa
- Division of Oral Structural and Functional Biology, Nihon University Graduate School of Dentistry
| | - Akio Himejima
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University
| | - Ryota Nakamura
- Division of Oral Structural and Functional Biology, Nihon University Graduate School of Dentistry
| | - Kanako Yamagata
- Division of Oral Structural and Functional Biology, Nihon University Graduate School of Dentistry
| | - Takako Sato
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry
| | - Masaaki Suzuki
- Department of Otolaryngology, Teikyo University Chiba Medical Center
| | - Tadashi Tanuma
- Laboratory of Fluid-Structural Simulation and Design, Teikyo University Strategic Innovation and Research Center
| | - Morio Tonogi
- Department of Oral and Maxillofacial Surgery, Nihon University School of Dentistry
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Fukuda A, Himejima A, Tsuruta D, Koga H, Ohyama B, Morita S, Hashimoto T. Four cases of mucous membrane pemphigoid with clinical features of oral lichen planus. Int J Dermatol 2016; 55:657-65. [PMID: 26341508 DOI: 10.1111/ijd.12884] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 08/27/2014] [Accepted: 10/19/2014] [Indexed: 01/25/2023]
Abstract
BACKGROUND Mucous membrane pemphigoid (MMP) and oral lichen planus (OLP) show similar clinical features on the oral mucosa. As clinical manifestations of oral mucosal lesions, MMP shows blisters and erosions, whereas OLP shows lace-like whitish lesions in an annular arrangement with erythema and erosions. Histopathologically, MMP shows subepithelial bullae with infiltrates of lymphocytes and neutrophils, whereas OLP shows band-like interface infiltration of lymphocytes with damage in basal cells. However, these two diseases are frequently difficult to distinguish both clinically and histopathologically. OBJECTIVES We report four patients with oral MMP who showed OLP-like clinical and histopathological lesions. METHODS We performed direct immunofluorescence, indirect immunofluorescence of normal human skin and 1 m NaCl-split skin, enzyme-linked immunosorbent assays for BP180, BP230, and desmogleins 1 and 3, and immunoblotting of normal human epidermal and dermal extracts, recombinant proteins of BP180-NC16a and -C-terminal domains, concentrated culture supernatant of HaCaT cells, and purified laminin-332. RESULTS The results of various immunological studies suggested the diagnoses of various types of MMP for all four patients. CONCLUSIONS Because MMP and OLP require different treatments, all dentists and dermatologists should have knowledge about the disease entity and the serological diagnostic methods for various types of MMP.
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Affiliation(s)
- Aoi Fukuda
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | - Akio Himejima
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | - Daisuke Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Department of Dermatology, Kurume University School of Medicine , Fukuoka, Japan
- Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
| | - Hiroshi Koga
- Department of Dermatology, Kurume University School of Medicine , Fukuoka, Japan
- Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
| | - Bungo Ohyama
- Department of Dermatology, Kurume University School of Medicine , Fukuoka, Japan
- Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
| | - Shosuke Morita
- First Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, Japan
| | - Takashi Hashimoto
- Department of Dermatology, Kurume University School of Medicine , Fukuoka, Japan
- Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
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Yashiro K, Shin SO, Sakashita Y, Himejima A, Mori A, Yoshida M, Yokota Y. [Changes in the free fatty acid composition of rat salivary glands induced by chronic administration of isoproterenol]. Gifu Shika Gakkai Zasshi 1990; 17:547-56. [PMID: 2133668] [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: 12/30/2022]
Abstract
The major constituent free fatty acid in rat parotid and submandibular glands was palmitic acid (about 40% of the total), followed by saturated and unsaturated fatty acids with 18 carbon atoms and arachidonic acid. The composition was changed by chronic administration of isoproterenol, with an increase of linoleic acid and a decrease of arachidonic acid coinciding with changes in the acyl composition of phospholipids. With respect to the metabolism of unsaturated fatty acids, delta 6-desaturation activity converting linoleic acid to gamma-linolenic acid was detected using [14C]linoleoyl-CoA in the submandibular gland. These results suggest that changes in the acyl composition of phospholipids induced by chronic administration of isoproterenol are in part due to changes in free fatty acid composition and that delta 6-desaturation activity may be involved in the regulation of unsaturated fatty acid composition.
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Affiliation(s)
- K Yashiro
- Department of Oral Biochemistry, Asahi University School of Dentistry
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