http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Shigeyuki Fujita,Itaru Tojyo,Shigeru Suzuki,Fumihiro Tajima 대한악안면성형재건외과학회 2023 Maxillofacial Plastic Reconstructive Surgery Vol.45 No.-
Background Extraction of the mandibular third molar, the most frequent and important surgical procedure in the clinical practice of oral surgery, is associated with the risk of injury of the lingual nerve. Neuropathy of the lingual nerve poses diagnostic challenges regarding the transient or permanent nature of the injury. No consensus or criteria have been established regarding the diagnosis of lingual nerve neuropathy. We applied both Tinel’s test and clinical neurosensory testing together, which can be easily used at the bedside in the early stages of injury. Therefore, we propose a new method to differentiate between lesions with the ability to heal spontaneously and those that cannot heal without surgery. Results Thirty-three patients (29 women, 4 men; mean age, 35.5 years) were included in this study. For all patients, the median interval between nerve injury and initial examination was 1.6 months and that between nerve injury and the second examination before determining the need for surgical management was 4.5 months. The patients were assigned to either group A or B. The spontaneous healing group (group A, n = 10) revealed a tendency for recovery within 6 months after tooth extraction. In this group, although there were individual differences in the degree of recovery, a remarkable tendency for recovery was observed based on clinical neurosensory testing in all cases. None of the patients were diagnosed with allodynia. In seven cases, the Tinel test result was negative at the first inspection, and in three cases, the result changed to negative at the second inspection. Conversely, in group B(n = 23), no recovery trend was observed with regard to clinical neurosensory testing, and nine patients had allodynia. Further, the Tinel test result was positive for all patients in both examinations. Conclusions Our findings indicate that in case of transient lingual nerve paralysis, clinical neurosensory testing findings deteriorate immediately after tooth extraction and gradually recover, while Tinel’s test shows a negative result. Using Tinel’s test and clinical neurosensory testing together enabled early and easy identification of the severity of the lingual nerve disorder and of lesions that would heal spontaneously without surgical management.
Shigeyuki Fujita,Itaru Tojyo,Takashi Nakanishi,Shigeru Suzuki 대한악안면성형재건외과학회 2022 Maxillofacial Plastic Reconstructive Surgery Vol.44 No.-
Background: No studies have compared the outcomes of direct perineurial suture with vein graft cuff repair andindirect collagen allograft repair of the lingual nerve following an injury. Therefore, we evaluated and compared theoutcomes of each over a 1-year observation period. We retrospectively assessed 20 patients who had undergonemicroneurosurgical repair of unilateral lingual nerve injuries at the Wakayama Medical University Hospital betweenMay 2015 and March 2019. We utilized two different methods for lingual nerve repair, i.e., direct perineurial repairwith a vein graft cuff and interpositional collagen allograft repair. Sensory and taste function in the lingual nervewere preoperatively evaluated using a static two-point discrimination test, superficial pain/tactile sensation test,tests for the pressure pain threshold (Semmens-Weinstein monofilament), test for thermal discrimination hot andcold sensation, and a taste discrimination test. These tests were performed again at 6 and 12 months postoperatively. Results: Compared to the preoperative conditions, all patients showed improved sensory reactions. Functional sensoryrecovery outcomes were defined by Pogrel’s criteria, Medical Research Council Scale grades, and functional sensoryrecovery. In each group, all patients improved after the operation. However, the operation time was significantly shorterfor an interpositional collagen allograft repair as compared to that for a direct perineurial repair with a vein graft cuff. Conclusions: There were no statistically significant differences between the two repair Methods, except for the operationtime. Both methods led to satisfactory results for all criteria. From an economic point of view, direct perineurial repair witha vein graft cuff ismeaningful; however, the esthetic effect on the donor site should be considered. Conversely,interpositional collagen allograft repair has the advantage of a greatly shortened operation time.
Masato Yoshihara,Hiroaki Kajiyama,Satoshi Tamauchi,Shiro Suzuki,Kunihiko Takahashi,Shigeyuki Matsui,Fumitaka Kikkawa 대한부인종양학회 2019 Journal of Gynecologic Oncology Vol.30 No.6
Objective: The aim of this study was to investigate the clinical characteristics of youngpatients with stage I clear-cell carcinoma (CCC) and evaluate the prognostic factors andeffects of fertility-sparing surgery (FSS) using propensity score (PS) adjustment. Methods: We conducted a regional multi-institutional study between 1986 and 2017. Among4,277 patients with ovarian tumor, clinical and pathological data of 103 fertile women withstage I unilateral CCC were collected. We evaluated survival and reproductive outcomesin these patients. Additionally, to analyze the effects of FSS, baseline imbalance betweenpatients with and those without FSS was adjusted with an inverse probability of treatmentweighting using PSs involving independent clinical variables. Results: The mean patient age was 39.4 years, and the median follow-up period for survivingpatients was 55.6 months. In multivariate analysis, stage IC2/IC3 (vs. IA/IC1) was the onlyindependent prognostic factor for recurrence-free survival (RFS) and overall survival (OS). FSS was not associated with poorer prognosis when compared to the prognosis with nonpreservingsurgery with regard to both RFS and OS. No statistical difference in survivaloutcomes between FSS and other approaches was confirmed after PS adjustment. Amongpatients who underwent FSS, four deliveries with healthy neonates were noted without anygestational complications. Conclusion: FSS can be considered in stage I CCC, specifically in stage IA and IC1 patientswho strongly desire to have children in the future. Further clinical research is needed toclarify the optimal application of FSS for CCC.
Surface Water Quality Assessment in the Central Part of Bangladesh Using Multivariate Analysis
Mohammad A. H. Bhuiyan,M. A. Rakib,S. B. Dampare,S. Ganyaglo,Shigeyuki Suzuki 대한토목학회 2011 KSCE JOURNAL OF CIVIL ENGINEERING Vol.15 No.6
This study deals with the natural and anthropogenic processes that influence the surface water quality in the central Bangladesh using multivariate statistical techniques. The investigation shows that the Total Suspended Solids (TSS), Total Dissolved Solids (TDS), turbidity, Electrical Conductivity (EC), Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), NO_(3−), SO_4^(2−), Cl^−, PO_4^(3−) and microbial loads are higher than the Bangladesh standards. R-mode CA groups all 10 sampling sites into 3 statistically significant clusters, reflecting the different physicochemical characteristics and pollution levels of the sites. R-mode CA suggests common sources (industrial, agriculture and urban sewage) for TSS, EC, turbidity, temperature, COD,PO_4^(3−), SO_4^(2−), and Fecal Coliform (FC). The PCA/FA identifies 5 dominant factors as responsible for the data structure, explaining 88.3% of the total variance in the dataset. The multiple anthropogenic (i.e., industrial, agricultural, urban sewage) and natural sources (soil erosion, aquatic hyacinths and weeds) of water quality parameters have been identified by PCA. This work is believed to serve as a baseline data for further studies in the Turag River system as well as inform decision-makers on the proper design of sampling and analytical protocols for effective pollution management of the surface water quality in the basin.
Literature Review on Recent Magnetocardiography and Impedance-Magnetocardiography Technologies
Kandori, A.,Miyashita, T.,Ogata, K.,Seki, Y.,Suzuki, D.,Tsukamoto, A.,Saito, K.,Yokosawa, K.,Tsukada, K.,Yamada, Satsuki,Watanabe, Shigeyuki,Horigome, Hitoshi,Yamaguchi, Iwao The Korean Superconductivity Society 2006 Progress in superconductivity Vol.8 No.1
We have developed magnetocardiography(MCG) and impedance magnetocardiography(I-MCG) for detecting heart disease by using dc-SQUID technology. The MCG system, using low-Tc SQUID, is being applied commercially for diagnosing heart disease. Using the low-Tc MCG system, many clinical studies on detection of abnormality have been performed. Furthermore, we have developed a portable MCG system using high-Tc SQUID. For detecting changes in kinetic impedance in the heart, an I-MCG system has been demonstrated. The I-MCG system could detect the mechanical movement of the heart. In this report, we review current clinical applications of magnetocardiography and impedance magnetocardiography.
Redox-coupled proton transfer mechanism in nitrite reductase revealed by femtosecond crystallography
Fukuda, Yohta,Tse, Ka Man,Nakane, Takanori,Nakatsu, Toru,Suzuki, Mamoru,Sugahara, Michihiro,Inoue, Shigeyuki,Masuda, Tetsuya,Yumoto, Fumiaki,Matsugaki, Naohiro,Nango, Eriko,Tono, Kensuke,Joti, Yasumas National Academy of Sciences 2016 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.113 No.11
<P>Proton-coupled electron transfer (PCET), a ubiquitous phenomenon in biological systems, plays an essential role in copper nitrite reductase (CuNiR), the key metalloenzyme in microbial denitrification of the global nitrogen cycle. Analyses of the nitrite reduction mechanism in CuNiR with conventional synchrotron radiation crystallography (SRX) have been faced with difficulties, because X-ray photoreduction changes the native structures of metal centers and the enzyme-substrate complex. Using serial femtosecond crystallography (SFX), we determined the intact structures of CuNiR in the resting state and the nitrite complex (NC) state at 2.03- and 1.60-angstrom resolution, respectively. Furthermore, the SRX NC structure representing a transient state in the catalytic cycle was determined at 1.30-angstrom resolution. Comparison between SRX and SFX structures revealed that photoreduction changes the coordination manner of the substrate and that catalytically important His255 can switch hydrogen bond partners between the backbone carbonyl oxygen of nearby Glu279 and the side-chain hydroxyl group of Thr280. These findings, which SRX has failed to uncover, propose a redox-coupled proton switch for PCET. This concept can explain how proton transfer to the substrate is involved in intramolecular electron transfer and why substrate binding accelerates PCET. Our study demonstrates the potential of SFX as a powerful tool to study redox processes in metalloenzymes.</P>
Literature Review on Recent Magnetocardiography and Impedance-MagnetocardiographyTechnologies
Y. Seki,A. Tsukamoto,K. Tsukada,Hitoshi Horigome,Miki Yokokawa,Yoshihide Chiba,Kimio Tanaka,A. Kandori,T. Miyashita,K. Ogata,D. Suzuki,K. Saito,K. Yokosawa,Satsuki Yamada,Shigeyuki Watanabe,Iwao Yamag 한국초전도학회 2006 Progress in superconductivity Vol.8 No.1