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Suzuki Noritaka,Eguchi Yawara,Hirai Takashi,Takahashi Takuya,Takahashi Yohei,Watanabe Kota,Banno Tomohiro,Sakaki Kyohei,Maki Satoshi,Takano Yuuichi,Taniguchi Yuki,Aoki Yasuchika,Konishi Takamitsu,Hira 대한척추외과학회 2024 Asian Spine Journal Vol.18 No.4
Study Design: Retrospective cohort study.Purpose: This study aimed to compare data from patients who received intradiscal condoliase (chondroitin sulfate ABC endolyase) injection for primary lumbar disc herniation (LDH) and recurrent LDH.Overview of Literature: Chemonucleolysis with condoliase for LDH is a treatment with relatively good results and a high safety profile; however, few studies have reported recurrence after LDH surgery.Methods: The study participants were 249 patients who underwent intradiscal condoliase injection for LDH at nine participating institutions, including 241 patients with initial LDH (group C) and eight with recurrent LDH (group R). Patient characteristics including age, sex, body mass index, disease duration, intervertebral LDH level, smoking history, and diabetes history were evaluated. Low back pain/leg pain Numerical Rating Scale (NRS) scores and the Oswestry Disability Index (ODI) were used to evaluate clinical symptoms before treatment and at 6 months and 1 year after treatment.Results: Low back pain NRS scores (before treatment and at 6 months and 1 year after treatment, respectively) in group C (4.9 → 2.6 → 1.8) showed significant improvement until 1 year after treatment. Although a tendency for improvement was observed in group R (3.5 → 2.8 → 2.2), no significant difference was noted. Groups C (6.6 → 2.4 → 1.4) and R (7.0 → 3.1 → 3.2) showed significant improvement in the leg pain NRS scores after treatment. Group C (41.4 → 19.5 → 13.7) demonstrated significant improvement in the ODI up to 1 year after treatment; however, no significant difference was found in group R (35.7 → 31.7 → 26.4).Conclusions: Although intradiscal condoliase injection is less effective for LDH recurrence than for initial cases, it is useful for improving leg pain and can be considered a minimally invasive and safe treatment method.
Suzuki, Yushi,Tanaka, Ichiro,Sakai, Shigeki,Yamauchi, Tomohiro Korean Society of Plastic and Reconstructive Surge 2021 Archives of Plastic Surgery Vol.48 No.2
Background There are currently no guidelines for the postoperative wound management of the hard-palate donor site in cases involving mucosal harvesting. This study describes our experiences with the use of an artificial dermis for early epithelialization and transparent plate fixation in cases involving hard-palate mucosal harvesting. Methods A transparent palatal plate was custom-fabricated using a thermoplastic resin board. After mucosal harvesting, an alginic acid-containing wound dressing (Sorbsan) was applied to the donor site, which was then covered with the plate. After confirming hemostasis, the dressing was changed to artificial dermis a few days later, and the plate was fixed to the artificial dermis. The size of the mucosal defect ranged from 8×25 to 20×40 mm. Results Plate fixation was adequate, with no postoperative slippage or infection of the artificial dermis. There was no pain at the harvest site, but a slight sense of incongruity during eating was reported. Although the fabrication and application of the palatal plate required extra steps before and after harvesting, the combination of the artificial dermis and palatal plate was found to be very useful for protecting the mucosal harvest site, and resulted in decreased pain and earlier epithelialization. Conclusions The combination of artificial dermis and a transparent palatal plate for wound management at the hard-palate mucosal donor site resolved some of the limitations of conventional methods.
Relation between N–H complexes and electrical properties of GaAsN determined by H implantation
Jong-Han Lee,Hidetoshi Suzuki,Xiuxun Han,Katahiko Honda,Tomohiro Tanaka,Jong-Ha Hwang,Boussairi Bouzazi,Makoto Inagaki,Nobuaki Kojima,Yoshio Ohshita,Masafumi Yamaguchi 한국물리학회 2010 Current Applied Physics Vol.10 No.3
We investigated the relation between N–H complexes and the electrical properties of GaAsN, which is a potential material for fabricating super-high-efficiency multi-junction tandem solar cells. In order to separate the effect of other residual carrier such as carbon in a GaAsN film on the electrical properties, hydrogen (H) ions were implanted into GaAsN grown by chemical beam epitaxy (CBE) and then rapid thermal annealing from 250 to 650 ℃ was carried out. Two N–H complexes related to local vibrational modes (LVMs) in GaAsN were observed at 3098 and 3125 cm-1. With an increasing annealing temperature,the integrated peak intensity of the 3098 cm-1 peak (I3098) decreased, while that of the 3125 cm-1 peak (I3125) increased. This indicates that N–H complexes related to the 3125 cm-1 peak are thermally more stable than those related to the other peak. The hole concentrations and mobilities exhibited an increasing trend until an annealing temperature of 550 ℃ was reached. Their increases are attributed to the removal of donor-type defects. It is suggested that the N–H complexes related to the 3098 cm-1 peak are electrically active, while those giving the 3125 cm-1 peak are inactive.
Yuki Tanaka,Hideo Dohra,Tomohiro Suzuki,Takeshi Kurokura,Masayuki Iigo,Fubito Toyama,Naoto Habu,Naotake Konno 한국유전학회 2017 Genes & Genomics Vol.39 No.12
The complete mitochondrial genome sequence of the wood-decaying fungus Fomitopsis palustris (Basidiomycete, Agaricomycotina) was determined by next-generation sequencing technology. The complete sequence of the circular mitochondrial DNA of F. palustris was 63,479 bp in length with a 75.98% AT content. The mitochondrial genome encoded 14 conserved proteins, 2 ribosomal RNAs, 26 transfer RNAs, and 19 additional open reading frames. The coxI and cob genes contained six and one group I introns, respectively, and encoded eight open reading frames, including seven intron-encoded endonucleases. The complete mitochondrial genome of F. palustris presented herein represents the first such report for brown rot basidiomycetes. In addition, the BLAST score ratio and phylogenetic analysis may open new avenues to understanding the evolutionary status of this fungus.
Short-Term Student Exchanges for Aspiring International Activities of Engineering Students
Sato, Takashi,Sakamoto, Shuichi,Shimizu, Tadaaki,Suzuki, Takamasa,Ikeda, Hideki,Hopf, Anja,Goto, Yasushi,Oka, Tetsuo,Sasaki, Tomohiro,Narumi, Takatsune Korean Society for Engineering Education 2014 공학교육연구 Vol.17 No.4
The Faculty of Engineering, Niigata University, Japan, obtained the scholarship in "Short-Stay and Short-Visit scholarship programs(SS-SV programs)" for both German and Japanese students in 2011 and 2012. Our short-term student exchange programs proved that a short-term stay in a foreign country worked as an initiator for the students' interest and it strengthen their will to study further more in foreign countries.
Short-Term Student Exchanges for Aspiring International Activities of Engineering Students
Takashi Sato,Shuichi Sakamoto,Tadaaki Shimizu,Takamasa Suzuki,Hideki Ikeda,Anja Hopf,Yasushi Goto,Tetsuo Oka,Tomohiro Sasaki,Takatsune Narumi 한국공학교육학회 2014 공학교육연구 Vol.17 No.4
The Faculty of Engineering, Niigata University, Japan, obtained the scholarship in “Short-Stay and Short-Visit scholarshipprograms(SS-SV programs)” for both German and Japanese students in 2011 and 2012. Our short-term student exchange programsproved that a short-term stay in a foreign country worked as an initiator for the students' interest and it strengthen their will tostudy further more in foreign countries.
Masao Koda,Chikato Mannoji,Masazumi Murakami,Tomoaki Kinoshita,Jiro Hirayama,Tomohiro Miyashita,Yawara Eguchi,Masashi Yamazaki,Takane Suzuki,Masaaki Aramomi,Mitsutoshi Ota,Satoshi Maki,Kazuhisa Takaha 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.6
Study Design: Retrospective case-control study. Purpose: To determine whether kissing spine is a risk factor for recurrence of sciatica after lumbar posterior decompression using a spinous process floating approach. Overview of Literature: Kissing spine is defined by apposition and sclerotic change of the facing spinous processes as shown in X-ray images, and is often accompanied by marked disc degeneration and decrement of disc height. If kissing spine significantly contributes to weight bearing and the stability of the lumbar spine, trauma to the spinous process might induce a breakdown of lumbar spine stability after posterior decompression surgery in cases of kissing spine. Methods: The present study included 161 patients who had undergone posterior decompression surgery for lumbar canal stenosis using a spinous process floating approaches. We defined recurrence of sciatica as that resolved after initial surgery and then recurred. Kissing spine was defined as sclerotic change and the apposition of the spinous process in a plain radiogram. Preoperative foraminal stenosis was determined by the decrease of perineural fat intensity detected by parasagittal T1-weighted magnetic resonance imaging. Preoperative percentage slip, segmental range of motion, and segmental scoliosis were analyzed in preoperative radiographs. Univariate analysis followed by stepwise logistic regression analysis determined factors independently associated with recurrence of sciatica. Results: Stepwise logistic regression revealed kissing spine (p =0.024; odds ratio, 3.80) and foraminal stenosis (p <0.01; odds ratio, 17.89) as independent risk factors for the recurrence of sciatica after posterior lumbar spinal decompression with spinous process floating procedures for lumbar spinal canal stenosis. Conclusions: When a patient shows kissing spine and concomitant subclinical foraminal stenosis at the affected level, we should sufficiently discuss the selection of an appropriate surgical procedure.