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1. Harmonic Bundles with Symplectic Structures

Author

Ono, Takashi

Subjects
Mathematics - Algebraic Geometry, 53C07, 14J60
Abstract

We study harmonic bundles with an additional structure called symplectic structure. We study them for the case of the base manifold is compact and non-compact. For the compact case, we show that a harmonic bundle with a symplectic structure is equivalent to principle $Sp(2n,C)$-bundle with a reductive flat connection. For the non-compact case, we show that a polystable good filtered Higgs bundle with a perfect skew-symmetric pairing is equivalent to a good wild harmonic bundle with a symplectic structure., Comment: Comments are welcome! 23 pages

Published
2024

2. Structure of the Kuranishi Spaces of pairs of K\'ahler manifolds and Polystable Higgs bundles

Author

Ono, Takashi

Subjects
Mathematics - Algebraic Geometry, Mathematics - Differential Geometry
Abstract

Let $X$ be a compact K\"ahler manifold and $(E,\overline\partial_E,\theta)$ be a Higgs bundle over it. We study the structure of the Kuranishi space for the pair $(X, E,\theta)$ when the Higgs bundle admits a harmonic metric or equivalently when the Higgs bundle is polystable and the Chern classes are 0. Under such assumptions, we show that the Kuranishi space of the pair $(X,E,\theta)$ is isomorphic to the direct product of the Kuranishi space of $(E,\theta)$ and the Kuranishi space of $X$. Moreover, when $X$ is a Riemann surface and $(E,\overline\partial_E,\theta)$ is stable and the degree is 0, we show that the deformation of the pair $(X,E,\theta)$ is unobstructed and calculate the dimension of the Kuranishi space., Comment: 15 pages. Comments are welcome! Typos are fixed

Published
2023

10. Deformations of holomorphic-Higgs pairs

Author

Ono, Takashi

Subjects
Mathematics - Differential Geometry
Abstract

We study the deformation of the holomorphic-Higgs pair. The holomorphic-Higgs pair is a pair of a complex manifold and a Higgs bundle over it. We introduce the differential graded Lie algebra (DGLA) which comes from the deformation. We derive the Maurer-Cartan equation which governs the deformation of the holomorphic-Higgs pair, construct the Kuranishi family of it, and prove its local completeness., Comment: 25page. Comments are welcome!

Published
2022

11. Impact of body mass index on outcomes after lumbar spine surgery

Author

Nakajima, Koji, Miyahara, Junya, Ohtomo, Nozomu, Nagata, Kosei, Kato, So, Doi, Toru, Matsubayashi, Yoshitaka, Taniguchi, Yuki, Kawamura, Naohiro, Higashikawa, Akiro, Takeshita, Yujiro, Fukushima, Masayoshi, Ono, Takashi, Hara, Nobuhiro, Azuma, Seiichi, Iwai, Hiroki, Oshina, Masahito, Sugita, Shurei, Hirai, Shima, Masuda, Kazuhiro, Tanaka, Sakae, and Oshima, Yasushi

Published
2023
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17. Does surgical site infection affect patient-reported outcomes after spinal surgery? A multicenter cohort study

Author

Nakamoto, Hideki, Nakajima, Koji, Miyahara, Junya, Kato, So, Doi, Toru, Taniguchi, Yuki, Matsubayashi, Yoshitaka, Nishizawa, Mitsuhiro, Kawamura, Naohiro, Kumanomido, Yudai, Higashikawa, Akiro, Sasaki, Katsuyuki, Takeshita, Yujiro, Fukushima, Masayoshi, Iizuka, Masaaki, Ono, Takashi, Yu, Jim, Hara, Nobuhiro, Okamoto, Naoki, Azuma, Seiichi, Inanami, Hirohiko, Sakamoto, Ryuji, Tanaka, Sakae, and Oshima, Yasushi

Published
2023
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19. NF-κB Decoy Oligodeoxynucleotide-Loaded Poly Lactic-co-glycolic Acid Nanospheres Facilitate Socket Healing in Orthodontic Tooth Movement

Author

Huang, Albert chun-shuo, primary, Ishida, Yuji, additional, Hatano-sato, Kasumi, additional, Oishi, Shuji, additional, Hosomichi, Jun, additional, Usumi-fujita, Risa, additional, Yamaguchi, Hiroyuki, additional, Tsujimoto, Hiroyuki, additional, Sasai, Aiko, additional, Ochi, Ayaka, additional, and Ono, Takashi, additional

Published
2024
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21. Surgical outcomes between posterior decompression alone and posterior decompression with fusion surgery among patients with Meyerding grade 2 degenerative spondylolisthesis: a multicenter cohort study

Author

Tozawa, Keiichiro, Matsubayashi, Yoshitaka, Kato, So, Doi, Toru, Taniguchi, Yuki, Kumanomido, Yudai, Higashikawa, Akiro, Yosihida, Yuichi, Kawamura, Naohiro, Sasaki, Katsuyuki, Azuma, Seiichi, Yu, Jim, Hara, Nobuhiro, Iizuka, Masaaki, Ono, Takashi, Fukushima, Masayoshi, Takeshita, Yujiro, Tanaka, Sakae, and Oshima, Yasushi

Published
2022
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25. Postoperative outcomes after degenerative lumbar spine surgery in rheumatoid arthritis patients -a propensity score-matched analysis

Author

Kato, So, Nakamoto, Hideki, Matsubayashi, Yoshitaka, Taniguchi, Yuki, Doi, Toru, Yoshida, Yuichi, Higashikawa, Akiro, Takeshita, Yujiro, Fukushima, Masayoshi, Ono, Takashi, Hara, Nobuhiro, Okazaki, Rentaro, Iwai, Hiroki, Oshina, Masahito, Sugita, Shurei, Hirai, Shima, Masuda, Kazuhiro, Tanaka, Sakae, and Oshima, Yasushi

Published
2022
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29. A Case of Transparent Cornea Maintained after Removal of Dislocated Graft from Descemet’s Stripping Automated Endothelial Keratoplasty.

Author

Nariya, Yuta, Ono, Takashi, Asahina, Yuichi, Kondo, Atsushi, Taketani, Yukako, Kimakura, Mikiko, Toyono, Tetsuya, Aihara, Makoto, and Miyai, Takashi

Subjects
*CORNEAL transplantation, *DESCEMET stripping endothelial keratoplasty, *DESCEMET stripping automated endothelial keratoplasty, *CRYSTALLINE lens, *CORNEA, *CORNEAL dystrophies, *CORNEAL opacity, *SURGICAL complications
Abstract

Introduction: Corneal graft detachment is a major postoperative complication of Descemet’s stripping automated endothelial keratoplasty (DSAEK). When a corneal graft becomes detached, corneal endothelial function generally fails, and repeat corneal transplantation is required. Herein, we report a rare case in which a transparent cornea was maintained after the removal of a dislocated DSAEK graft. Case Presentation: A 79-year-old woman with a residual lens cortex who had undergone cataract surgery was referred to our hospital. The cortex was removed, and bullous keratopathy progressed. Six months after the initial surgery, DSAEK was performed under topical anesthesia without any complications. Although the corneal graft had attached fairly well, it detached from the host cornea 3 weeks later. Two months after DSAEK, an air tamponade was used to treat the anterior chamber with single interrupted suturing; however, the graft detached again, except for the suture site. Because the detached cornea became cloudy in the anterior chamber, it was surgically removed 8 months after DSAEK. Accordingly, the host cornea transparency improved to a best-corrected visual acuity of 0.8 with a rigid gas permeable lens and a central corneal thickness of 580 μm. The corneal endothelial cell density was 995 cells/mm2. Conclusion: Removal of the corneal graft from the dislocated cloudy graft improved the visual acuity of this patient after DSAEK. The condition of the cornea should be carefully monitored after corneal endothelial transplantation, even after the graft has been dislocated. [ABSTRACT FROM AUTHOR]

Published
2024
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30. Contributions of Alveolar Bone Density and Habitual Chewing Side to the Unilateral Failure of Orthodontic Mini-Screws: A Cross-Sectional Study.

Author

Okuzawa-Iwasaki, Makiko, Ishida, Yuji, Ishizaki-Terauchi, Aiko, Shimizu-Tomoda, Chiyo, Aida, Jun, and Ono, Takashi

Subjects
ALVEOLAR process, CONE beam computed tomography, COMPACT bone, BONE density, POISSON regression, CROSS-sectional method, MASTICATION
Abstract

This study aimed to analyze the relationship between bone density, habitual chewing side (HCS), and mini-screw stability to investigate the intra-individual factors contributing to mini-screw failure. This retrospective study included 86 sides in 43 adults, who underwent bilateral maxillary mini-screw placement with subsequent unilateral failure of the mini-screw. Pre-treatment cone-beam computed tomography was used to measure the buccal cortical bone thickness and bone density on the failed and successful sides. Pre-treatment mandibular kinesiographic records were used to determine the HCS. Paired t-tests, one-proportion z-tests, and multivariable multilevel Poisson regression were used to examine the statistical significance. The buccal cortical bone thicknesses were 0.93 ± 0.27 mm (unsuccessful side) and 1.01 ± 0.27 mm (successful side), with no significant difference. The bone density on the unsuccessful side (1059.64 ± 202.64 mg/cm3) was significantly lower than the success side (1317.89 ± 332.23 mg/cm3). Regarding HCS, 27.9% of failures occurred on the preferred side, and 62.8% occurred on the non-preferred side. After adjusting for all factors, the non-preferred side showed a 2.22 times higher prevalence ratio for mini-screw failure than the preferred side. HCS is significantly related to mini-screw stability, while the cortical bone thickness, bone density, and site of mini-screw implantation were not correlated. [ABSTRACT FROM AUTHOR]

Published
2024
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31. Molecular epidemiology of human metapneumovirus before and after COVID-19 in East Japan in 2017–2022

Author

Shirato, Kazuya, primary, Suwa, Reiko, additional, Nao, Naganori, additional, Kawase, Miyuki, additional, Sugimoto, Satoko, additional, Kume, Yohei, additional, Chishiki, Mina, additional, Ono, Takashi, additional, Okabe, Hisao, additional, Norito, Sakurako, additional, Sato, Masatoki, additional, Sakuma, Hiroko, additional, Suzuki, Shigeo, additional, Hosoya, Mitsuaki, additional, Takeda, Makoto, additional, and Hashimoto, Koichi, additional

Published
2023
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32. Evidence of the simultaneous replications of active viruses in specimens positive for multiple respiratory viruses

Author

Kawase, Miyuki, primary, Suwa, Reiko, additional, Sugimoto, Satoko, additional, Kakizaki, Masatoshi, additional, Kume, Yohei, additional, Chishiki, Mina, additional, Ono, Takashi, additional, Okabe, Hisao, additional, Norito, Sakurako, additional, Ujike, Makoto, additional, Hosoya, Mitsuaki, additional, Hashimoto, Koichi, additional, and Shirato, Kazuya, additional

Published
2023
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34. Impact of the COVID-19 pandemic on surgical volume and outcomes in spine surgery: a multicentre retrospective study in Tokyo

Author

Oshima, Yasushi, primary, Ohtomo, Nozomu, additional, Kawamura, Naohiro, additional, Higashikawa, Akiro, additional, Hara, Nobuhiro, additional, Ono, Takashi, additional, Takeshita, Yujiro, additional, Fukushima, Masayoshi, additional, Azuma, Seiichi, additional, Kato, So, additional, Matsubayashi, Yoshitaka, additional, Taniguchi, Yuki, additional, and Tanaka, Sakae, additional

Published
2023
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40. Diabetes is associated with greater leg pain and worse patient-reported outcomes at 1 year after lumbar spine surgery

Author

Nagata, Kosei, Nakamoto, Hideki, Sumitani, Masahiko, Kato, So, Yoshida, Yuichi, Kawamura, Naohiro, Tozawa, Keiichiro, Takeshita, Yujiro, Nakarai, Hiroyuki, Higashikawa, Akiro, Iizuka, Masaaki, Ono, Takashi, Fukushima, Masayoshi, Sasaki, Katsuyuki, Okazaki, Rentaro, Ito, Yusuke, Hara, Nobuhiro, Doi, Toru, Taniguchi, Yuki, Matsubayashi, Yoshitaka, Tanaka, Sakae, and Oshima, Yasushi

Published
2021
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44. A Case of Inflammatory Juvenile Conjunctival Nevus with a Rare Histopathological Type.

Author

Iwata, Chihiro, Asahina, Yuichi, Ono, Takashi, Taketani, Yukako, Kimakura, Mikiko, Toyono, Tetsuya, Tanaka, Mariko, Aihara, Makoto, and Miyai, Takashi

Subjects
HISTOPATHOLOGY, EYE drops, NEVUS, IMMUNOSTAINING, OCULAR tumors, SOX transcription factors
Abstract

Introduction: Inflammatory juvenile conjunctival nevus (IJCN) is a rare condition affecting both children and adolescents. It has misleading clinical and histopathological features; therefore, careful assessment is necessary. We present a case of IJCN with a rare pathological type and misleading histopathological features. Case Presentation: A 13-year-old girl with IJCN in the right eye was treated with antiallergic and steroid eye drops but showed no response and was referred to our hospital for excisional biopsy. Slit-lamp examination revealed a nonpigmented juxtalimbal tumor in the right eye. Histopathologically, nevus cells with mild nuclear atypia proliferated within the conjunctival epithelium. Confluent growth of junctional nests, conjunctival cysts, and prominent inflammatory infiltration were also observed. Considering the young age of the patient and immunohistochemical characteristics (HMB-45, SOX10, p16 and Ki-67), the patient was finally diagnosed with IJCN. IJCN has three pathological subtypes – compound, subepithelial, and junctional – depending on the location of the nevus cells. This case was diagnosed as a rare junctional type, as most of the examined sections only showed lesions within the epithelium; no lesions were clearly identified extending beneath the epithelium. Conclusion: The pathological diagnosis of IJCN is difficult because some features of IJCN suggest malignancy. Detailed microscopic examination, immunohistochemical staining, and the patient's young age helped render a final diagnosis. [ABSTRACT FROM AUTHOR]

Published
2024
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45. Causes and Management of Endoscopic Retrograde Cholangiopancreatography-Related Perforation: A Retrospective Study

Author

Shimizu, Tetsuya, primary, Yoshioka, Masato, additional, Matsushita, Akira, additional, Kaneko, Keiko, additional, Ueda, Junji, additional, Kawashima, Mampei, additional, Irie, Toshiyuki, additional, Ono, Takashi, additional, Furuki, Hiroyasu, additional, Kanda, Tomohiro, additional, Mizuguchi, Yoshiaki, additional, Kawano, Yoichi, additional, Nakamura, Yoshiharu, additional, and Yoshida, Hiroshi, additional

Published
2023
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46. Molecular Diversity of Human Respiratory Syncytial Virus before and during the COVID-19 Pandemic in Two Neighboring Japanese Cities

Author

Ono, Takashi, primary, Hashimoto, Koichi, additional, Kume, Yohei, additional, Chishiki, Mina, additional, Okabe, Hisao, additional, Sato, Masatoki, additional, Norito, Sakurako, additional, Aso, Jumpei, additional, Sada, Mitsuru, additional, Mochizuki, Izumi, additional, Mashiyama, Fumi, additional, Ishibashi, Naohisa, additional, Suzuki, Shigeo, additional, Sakuma, Hiroko, additional, Suwa, Reiko, additional, Kawase, Miyuki, additional, Takeda, Makoto, additional, Shirato, Kazuya, additional, Kimura, Hirokazu, additional, and Hosoya, Mitsuaki, additional

Published
2023
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