著者 Makino, Yoshiteru| Kawamura, Izuru| Okitsu, Takashi| Wada, Akimori| Kamo, Naoki| Sudo, Yuki| Ueda, Kazuyoshi| Naito, Akira|
抄録 Pharanois phoborhodopsin (ppR) from Natronomonas pharaonis is a transmembrane photoreceptor protein involved in negative phototaxis. Structural changes in ppR triggered by photoisomerization of the retinal chromophore are transmitted to its cognate transducer protein (pHtrII) through a cyclic photoreaction pathway involving several photointermediates. This pathway is called the photocycle. It is important to understand the detailed configurational changes of retinal during the photocycle. We previously observed one of the photointermediates (M-intermediates) by in situ photoirradiation solid-state NMR experiments. In this study, we further observed the 13C cross-polarization magic-angle-spinning NMR signals of late photointermediates such as O- and N'-intermediates by illumination with green light (520 nm). Under blue-light (365 nm) irradiation of the M-intermediates, 13C cross-polarization magic-angle-spinning NMR signals of 14- and 20-13C-labeled retinal in the O-intermediate appeared at 115.4 and 16.4 ppm and were assigned to the 13-trans, 15-syn configuration. The signals caused by the N'-intermediate appeared at 115.4 and 23.9 ppm and were assigned to the 13-cis configuration, and they were in an equilibrium state with the O-intermediate during thermal decay of the M-intermediates at -60°C. Thus, photoirradiation NMR studies revealed the photoreaction pathways from the M- to O-intermediates and the equilibrium state between the N'- and O-intermediate. Further, we evaluated the detailed retinal configurations in the O- and N'-intermediates by performing a density functional theory chemical shift calculation. The results showed that the N'-intermediate has a 63° twisted retinal state due to the 13-cis configuration. The retinal configurations of the O- and N'-intermediates were determined to be 13-trans, 15-syn, and 13-cis, respectively, based on the chemical shift values of [20-13C] and [14-13C] retinal obtained by photoirradiation solid-state NMR and density functional theory calculation.
備考 This is an Accepted Manuscript of an article published by Biophysical Society This fulltext will be available in Jul 2019
発行日 2018-07-03
出版物タイトル Biophysical Journal
115巻
1号
出版者 Biophysical Society
開始ページ 72
終了ページ 83
ISSN 00063495
NCID AA00566095
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン author
PubMed ID 29972813
DOI 10.1016/j.bpj.2018.05.030
関連URL isVersionOf https://doi.org/10.1016/j.bpj.2018.05.030
著者 Takami, Tsuneaki| Ohnishi, Norikazu| Kurita, Yuko| Iwamura, Shoko| Ohnishi, Miwa| Kusaba, Makoto| Mimura, Tetsuro| Sakamoto, Wataru|
抄録 Mitochondria and chloroplasts (plastids) both harbour extranuclear DNA that originates from the ancestral endosymbiotic bacteria. These organelle DNAs (orgDNAs) encode limited genetic information but are highly abundant, with multiple copies in vegetative tissues, such as mature leaves. Abundant orgDNA constitutes a substantial pool of organic phosphate along with RNA in chloroplasts, which could potentially contribute to phosphate recycling when it is degraded and relocated. However, whether orgDNA is degraded nucleolytically in leaves remains unclear. In this study, we revealed the prevailing mechanism in which organelle exonuclease DPD1 degrades abundant orgDNA during leaf senescence. The DPD1 degradation system is conserved in seed plants and, more remarkably, we found that it was correlated with the efficient use of phosphate when plants were exposed to nutrient-deficient conditions. The loss of DPD1 compromised both the relocation of phosphorus to upper tissues and the response to phosphate starvation, resulting in reduced plant fitness. Our findings highlighted that DNA is also an internal phosphate-rich reservoir retained in organelles since their endosymbiotic origin.
備考 This is an Accepted Manuscript of an article published by Springer Nature Publishing AG This fulltext will be available in May 2019
発行日 2018-05-12
出版物タイトル Nature Plants
4巻
出版者 Springer Nature Publishing AG
開始ページ 1044
終了ページ 1055
ISSN 20550278
NCID AA1273934X
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン author
PubMed ID 30420711
DOI 10.1038/s41477-018-0291-x
関連URL isVersionOf https://doi.org/10.1038/s41477-018-0291-x
著者 Inoue, Mayuri| Nakamura, Takashi| Tanaka, Yasuaki| Suzuki, Atsushi| Yokoyama, Yusuke| Kawahata, Hodaka| Sakai, Kazuhiko| Gussone, Nikolaus|
抄録 Light-enhanced calcification of reef-building corals, which eventually create vast coral reefs, is well known and based on coral-algal symbiosis. Several controversial hypotheses have been proposed as possible mechanisms for connecting symbiont photosynthesis and coral calcification, including pH rise in the internal pool, role of organic matrix secretion, and enzyme activities. Here, based on the skeletal chemical and isotopic compositions of symbiotic and asymbiotic primary polyps of Acropora digitifera corals, we show a simple pH increase in the calcification medium as the predominant contribution of symbionts to calcification of host corals. We used the symbiotic and asymbiotic primary polyps reared for 10 days at four temperatures (27, 29, 31, and 33 °C), five salinities (34, 32, 30, 28, and 26), and four pCO2 levels (<300, 400, 800, and 1000 µatm). As a result of analyzing multiple geochemical tracers (U/Ca, Mg/Ca, Sr/Ca, δ18O, δ13C, and δ44Ca), a clear and systematic decrease in skeletal U/Ca ratio (used as a proxy for calcification fluid pH) was observed, indicating a higher pH of the fluid in symbiotic compared to asymbiotic polyps. In contrast, Mg/Ca ratios (used as a tentative proxy for organic matrix secretion) and δ44Ca (used as an indicator of Ca2+ pathway to the fluid) did not differ between symbiotic and asymbiotic polyps. This suggests that organic matrix secretion related to coral calcification is controlled mainly by the coral host itself, and a transmembrane transport of Ca2+ does not vary according to symbiosis relationship. Skeletal δ18O values of both symbiotic and asymbiotic polyps showed offsets between them with identical temperature dependence. Based on a newly proposed model, behavior of δ18O in the present study seems to reflect the rate of CO2 hydration in the calcifying fluid. Since CO2 hydration is promoted by enzyme carbonic anhydrase, the offset of δ18O values between symbiotic and asymbiotic polyps is attributed to the differences of enzyme activity, although the enzyme is functional even in the asymbiotic polyp. Symbiotic δ13C values in the temperature and salinity experiments were higher compared to those in the asymbiotic polyps due to photosynthesis, although photosynthetic δ13C signals in the pCO2 experiment were masked by the dominant δ13C gradient in dissolved inorganic carbon in seawater caused by 13C-depletd CO2 gas addition in the higher pCO2 treatments. Sr/Ca ratios showed a negligible relationship according to variation of temperature, salinity, and pCO2, although it might be attributed to relatively large deviations of replicates of Sr/Ca ratios in the present study. Overall, only the U/Ca ratio showed a significant difference between symbiotic and asymbiotic polyps throughout all experiments, indicating that the critical effect on coral calcification caused by symbiotic algae is the increase of pH of the calcifying fluid by photosynthesis.
キーワード Coral symbiosis calcification pH geochemical tracers
備考 This is an Accepted Manuscript of an article published by Elsevier B.V. This fulltext will be available in May 2020
発行日 2018-08-15
出版物タイトル Geochimica et Cosmochimica Acta
235巻
出版者 Elsevier B.V.
開始ページ 76
終了ページ 88
ISSN 00167037
NCID AA00655038
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン author
DOI 10.1016/j.gca.2018.05.016
関連URL isVersionOf https://doi.org/10.1016/j.gca.2018.05.016
タイトル(別表記) Die Übersetzung von Jherings Briefe(3)
フルテキストURL olj_68_2_(001)_(037).pdf
著者 平田 公夫|
備考 翻訳 (Translation)
出版物タイトル 岡山大學法學會雜誌
発行日 2018-12-27
68巻
2号
出版者 岡山大学法学会
出版者(別表記) The Association of Law of Okayama University
開始ページ 294
終了ページ 258
ISSN 0386-3050
NCID AN00033040
資料タイプ 学術雑誌論文
言語 Japanese
論文のバージョン publisher
査読 有り
Sort Key 6
Eprints Journal Name olj
フルテキストURL olj_68_2_249_255.pdf
著者 岡山公法判例研究会|
備考 判例研究 (Comment on cases)
出版物タイトル 岡山大學法學會雜誌
発行日 2018-12-27
68巻
2号
出版者 岡山大学法学会
出版者(別表記) The Association of Law of Okayama University
開始ページ 249
終了ページ 255
ISSN 0386-3050
NCID AN00033040
資料タイプ 学術雑誌論文
言語 Japanese
論文のバージョン publisher
査読 有り
Sort Key 5
Eprints Journal Name olj
タイトル(別表記) Does Real Estate applicable “Object” that Article 521 of the Commercial Code Prescribes as Commercial Right to Retention
フルテキストURL olj_68_2_231_247.pdf
著者 𠮷岡 伸一|
備考 判例研究 (Comment on cases)
出版物タイトル 岡山大學法學會雜誌
発行日 2018-12-27
68巻
2号
出版者 岡山大学法学会
出版者(別表記) The Association of Law of Okayama University
開始ページ 231
終了ページ 247
ISSN 0386-3050
NCID AN00033040
資料タイプ 学術雑誌論文
言語 Japanese
論文のバージョン publisher
査読 有り
Sort Key 4
Eprints Journal Name olj
タイトル(別表記) A Study on Surrender of Security by Creditor : Historical and Comparative Perspectives (14)
フルテキストURL olj_68_2_211_229.pdf
著者 辻 博明|
備考 論説 (Article)
出版物タイトル 岡山大學法學會雜誌
発行日 2018-12-27
68巻
2号
出版者 岡山大学法学会
出版者(別表記) The Association of Law of Okayama University
開始ページ 211
終了ページ 229
ISSN 0386-3050
NCID AN00033040
資料タイプ 学術雑誌論文
言語 Japanese
論文のバージョン publisher
査読 有り
Sort Key 3
Eprints Journal Name olj
タイトル(別表記) A Study on Arbitrator’s Obligation of Disclosure
フルテキストURL olj_68_2_169_209.pdf
著者 濵田 陽子|
備考 論説 (Article)
出版物タイトル 岡山大學法學會雜誌
発行日 2018-12-27
68巻
2号
出版者 岡山大学法学会
出版者(別表記) The Association of Law of Okayama University
開始ページ 169
終了ページ 209
ISSN 0386-3050
NCID AN00033040
資料タイプ 学術雑誌論文
言語 Japanese
論文のバージョン publisher
査読 有り
Sort Key 2
Eprints Journal Name olj
タイトル(別表記) A new training system for board-certified surgeons
著者 藤原 俊義|
備考 新専門医療制度 (New System of Japanese Medical Specialty)
出版物タイトル 岡山医学会雑誌
発行日 2018-08-01
130巻
2号
出版者 岡山医学会
出版者(別表記) Okayama Medical Association
開始ページ 73
終了ページ 78
ISSN 0030-1558
NCID AN00032489
資料タイプ 学術雑誌論文
関連URL isVersionOf https://doi.org/10.4044/joma.130.73
言語 Japanese
著作権者 Copyright (c) 2018 岡山医学会
論文のバージョン publisher
査読 有り
DOI 10.4044/joma.130.73
NAID 130007481047
Sort Key 6
Eprints Journal Name joma
タイトル(別表記) An effective case of peroral endoscopic myotomy for esophageal abnormal peristalsis after Heller-Dor myotomy
著者 杉原 雄策| 原田 馨太| 加藤 諒| 山内 健司| 髙嶋 志保| 山崎 泰史| 井口 俊博| 高原 政宏| 川野 誠司| 平岡 佐規子| 眞部 紀明| 大塚 文男| 岡田 裕之|
抄録 Esophageal achalasia is a disorder of the lower esophageal sphincter muscle. Our patient, a Japanese male in his 80's, had been experiencing dysphagia for almost 60 years. He was treated with balloon dilations and Heller-Dor 5 years prior to his present admission. Esophagogastroduodenoscopy, esophageal radiography, and high-myotomy manometry indicated that the symptoms were likely due to abnormal peristalsis. With the patient’s informed consent, we performed a peroral endoscopic myotomy(POEM). The patient was discharged 4 days post-surgery. At the 6-month postoperative examination, no worsening of symptoms or relapse was observed. POEM is an excellent treatment method for esophageal achalasia from the perspective of therapeutic effect. We recommend that POEM be considered as the first-choice treatment for abnormal peristalsis after a Heller-Dor myotomy.
キーワード POEM(peroral endoscopic myotomy) 食道アカラシア(esophageal achalasia)
備考 症例報告 (Case Report)
出版物タイトル 岡山医学会雑誌
発行日 2018-08-01
130巻
2号
出版者 岡山医学会
出版者(別表記) Okayama Medical Association
開始ページ 67
終了ページ 71
ISSN 0030-1558
NCID AN00032489
資料タイプ 学術雑誌論文
関連URL isVersionOf https://doi.org/10.4044/joma.130.67
言語 Japanese
著作権者 Copyright (c) 2018 岡山医学会
論文のバージョン publisher
査読 有り
DOI 10.4044/joma.130.67
NAID 130007481050
Sort Key 5
Eprints Journal Name joma
タイトル(別表記) Pathologic clarification of graft-versus-host disease and novel therapeutic strategies
著者 前田 嘉信|
備考 総説 (Review)
出版物タイトル 岡山医学会雑誌
発行日 2018-08-01
130巻
2号
出版者 岡山医学会
出版者(別表記) Okayama Medical Association
開始ページ 61
終了ページ 65
ISSN 0030-1558
NCID AN00032489
資料タイプ 学術雑誌論文
関連URL isVersionOf https://doi.org/10.4044/joma.130.61
言語 Japanese
著作権者 Copyright (c) 2018 岡山医学会
論文のバージョン publisher
査読 有り
DOI 10.4044/joma.130.61
NAID 130007481045
Sort Key 4
Eprints Journal Name joma
タイトル(別表記) The 2017 Incentive Award of the Okayama Medical Association in Cardiovascular and Pulmonary Research (2017 Sunada Prize)
著者 春間 純|
備考 平成29年度岡山医学会賞紹介記事 受賞対象論文 : Haruma J, Teshigawara K, Hishikawa T, Wang D, Liu K, Wake H, Mori S, Takahashi HK, Sugiu K, Date I, Nishibori M : Anti-high mobility group box-1 (HMGB1) antibody attenuates delayed cerebral vasospasm and brain injury after subarachnoid hemorrhage in rats. Sci Rep (2016)6, 37755.
出版物タイトル 岡山医学会雑誌
発行日 2018-08-01
130巻
2号
出版者 岡山医学会
出版者(別表記) Okayama Medical Association
開始ページ 57
終了ページ 59
ISSN 0030-1558
NCID AN00032489
資料タイプ 学術雑誌論文
関連URL isVersionOf https://doi.org/10.4044/joma.130.57
言語 Japanese
著作権者 Copyright (c) 2018 岡山医学会
論文のバージョン publisher
査読 有り
DOI 10.4044/joma.130.57
NAID 130007481048
Sort Key 3
Eprints Journal Name joma
タイトル(別表記) The 2017 Incentive Award of the Okayama Medical Association in Cancer Research (2017 Hayashibara Prize and Yamada Prize)
著者 藤原 雅樹|
備考 平成29年度岡山医学会賞紹介記事 受賞対象論文 : Fujiwara M, Inagaki M, Nakaya N, Fujimori M, Higuchi Y, Kakeda K, Uchitomi Y, Yamada N : Association between serious psychological distress and nonparticipation in cancer screening and the modifying effect of socioeconomic status : Analysis of anonymized data from a national cross-sectional survey in Japan. Cancer (2018) 124, 555-562.
出版物タイトル 岡山医学会雑誌
発行日 2018-08-01
130巻
2号
出版者 岡山医学会
出版者(別表記) Okayama Medical Association
開始ページ 55
終了ページ 56
ISSN 0030-1558
NCID AN00032489
資料タイプ 学術雑誌論文
関連URL isVersionOf https://doi.org/10.4044/joma.130.55
言語 Japanese
著作権者 Copyright (c) 2018 岡山医学会
論文のバージョン publisher
査読 有り
DOI 10.4044/joma.130.55
NAID 130007481046
Sort Key 2
Eprints Journal Name joma
タイトル(別表記) The 2017 Incentive Award of the Okayama Medical Association in General Medical Science (2017 Yuuki Prize)
著者 平木 隆夫|
備考 平成29年度岡山医学会賞紹介記事 受賞対象論文 : Hiraki T, Kamegawa T, Matsuno T, Sakurai J, Kirita Y, Matsuura R, Yamaguchi T, Sasaki T, Mitsuhashi T, Komaki T, Masaoka Y, Matsui Y, Fujiwara H, Iguchi T, Gobara H, Kanazawa S : Robotically Driven CT-guided Needle Insertion : Preliminary Results in Phantom and Animal Experiments. Radiology (2017) 285, 454-461.
出版物タイトル 岡山医学会雑誌
発行日 2018-08-01
130巻
2号
出版者 岡山医学会
出版者(別表記) Okayama Medical Association
開始ページ 51
終了ページ 53
ISSN 0030-1558
NCID AN00032489
資料タイプ 学術雑誌論文
関連URL isVersionOf https://doi.org/10.4044/joma.130.51
言語 Japanese
著作権者 Copyright (c) 2018 岡山医学会
論文のバージョン publisher
査読 有り
DOI 10.4044/joma.130.51
NAID 130007481049
Sort Key 1
Eprints Journal Name joma
JaLCDOI 10.18926/AMO/56381
フルテキストURL 72_6_611.pdf
著者 Tsunoda, Koichi| Kobayashi, Rika| Kada, Akiko| Saito, Akiko M.| Misawa, Hayato| Horibe, Keizo| Goto, Fumiyuki| Tsunoda, Atsunobu| Sasaki, Toru| Takanosawa, Minako| Nishino, Hiroshi| Kondoh, Kenji| Sugiyama, Yoichiro| Hisa, Yasuo|
抄録 The oropharynx is examined with a light source such as an electric light, a penlight, or a forehead mirror based on an acquired visual field using a tongue depressor. However, it is extremely difficult to obtain objective and reproducible images of tissue within the pharynx required in recent years with these methods, and insufficient progress in the examination tools has been made. There is an increasing need to develop a method for display during oropharyngeal examination. We conducted the present study to develop a novel oropharyngeal endoscope as an objective observation method.
キーワード tongue depressor oropharyngeal scope oral pharyngeal otorhinolaryngology
Amo Type Clinical Study Protocol
発行日 2018-12
出版物タイトル Acta Medica Okayama
72巻
6号
出版者 Okayama University Medical School
開始ページ 611
終了ページ 614
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2018 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 30573918
NAID 120006545166
JaLCDOI 10.18926/AMO/56380
フルテキストURL 72_6_605.pdf
著者 Mitsui, Yosuke| Sadahira, Takuya| Maruyama, Yuki| Wada, Koichiro| Tanimoto, Ryuta| Sugimoto, Morito| Araki, Motoo| Watanabe, Masami| Yanai, Hiroyuki| Watanabe, Toyohiko| Nasu, Yasutomo|
抄録 Metastatic prostate cancer (PCa) cases that cannot be detected on repeat prostate biopsy are extremely rare. Our patient was a 51-year-old Japanese man diagnosed as metastatic PCa by histopathological examination of lesions obtained bone biopsy and lymph node dissection. The primary tumor was not detected after repeated prostate biopsy. Metastatic PCa was diagnosed based on immunohistochemical staining: PSA, AR, P504S, and NKX3.1 of bone and lymph node with metastasis. We speculate that the primary PCa was “burned-out,” demonstrating remote metastases with no apparent primary tumor in the prostate. Burned-out PCa may be difficult to diagnose and treat due to its rarity.
キーワード prostate cancer metastasis unknown primary tumor repeat biopsy CRPC
Amo Type Case Report
発行日 2018-12
出版物タイトル Acta Medica Okayama
72巻
6号
出版者 Okayama University Medical School
開始ページ 605
終了ページ 609
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2018 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 30573917
NAID 120006545165
JaLCDOI 10.18926/AMO/56379
フルテキストURL 72_6_601.pdf
著者 Hashimoto, Kazuhiko| Nishimura, Shunji| Iemura, Shunki| Akagi, Masao|
抄録 Salmonella osteomyelitis is extremely rare; only a few cases have been reported in healthy adults. We describe a case of salmonella osteomyelitis in an otherwise healthy 20-year-old Japanese woman who presented with distal tibial pain. X-ray and magnetic resonance imaging showed a lesion suspected to be a bone cyst. Osteomyelitis was diagnosed when pus was observed during an open biopsy. The bacterial culture examination yielded salmonella. Surgical drainage and antibiotic treatment were performed, after which no recurrence was observed. To our best knowledge, this is the first report of salmonella osteomyelitis of the distal tibia in an otherwise healthy individual.
キーワード osteomyelitis salmonella tibia healthy woman
Amo Type Case Report
発行日 2018-12
出版物タイトル Acta Medica Okayama
72巻
6号
出版者 Okayama University Medical School
開始ページ 601
終了ページ 604
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2018 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 30573916
NAID 120006545164
JaLCDOI 10.18926/AMO/56378
フルテキストURL 72_6_595.pdf
著者 Sugihara, Yuusaku| Harada, Keita| Kato, Ryo| Yamauchi, Kenji| Sakae, Hiroyuki| Kawano, Seiji| Hiraoka, Sakiko| Kawahara, Yoshiro| Otsuka, Fumio| Okada, Hiroyuki|
抄録 The indications for peroral endoscopic myotomy (POEM) have been expanded to include diffuse esophageal spasm (DES). A 67-year-old Japanese man presented with a 4-year history of dysphagia. Endoscopy and upper gastrography revealed abnormal peristaltic movements involving interruption of normal peristalsis, and a diverticulum located at the 2 o’clock esophageal position. High-resolution manometry indicated DES. POEM with a long (15 cm) myotomy was performed for the abnormal contractions, which subsequently disappeared along with dysphagia improvement. Our results suggest that esophageal motility disorders accompanying a diverticulum may be eliminated by POEM without treating the diverticulum itself. We speculate that POEM ameliorates esophageal diverticulum by reducing internal esophageal pressure.
キーワード diffuse esophageal spasm (DES) diverticulum, peroral endoscopic myotomy (POEM) high-resolution manometry (HRM)
Amo Type Case Report
発行日 2018-12
出版物タイトル Acta Medica Okayama
72巻
6号
出版者 Okayama University Medical School
開始ページ 595
終了ページ 600
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2018 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 30573915
NAID 120006545163
JaLCDOI 10.18926/AMO/56377
フルテキストURL 72_6_591.pdf
著者 Shimoyama, Yuichiro| Umegaki, Osamu| Inoue, Satsuki| Agui, Tomoyuki| Kadono, Noriko| Minami, Toshiaki|
抄録 A neutrophil-to-lymphocyte ratio (NLR) > 7 is reportedly an independent marker of mortality in patients with bacteremia. However, no studies have shown an association between inflammation-based prognostic scores (including the Glasgow Prognostic Score, the NLR, the platelet-to-lymphocyte ratio, the Prognostic Nutritional Index, and the Prognostic Index) and mortality in patients with pneumonia. We retrospectively examined the cases of 33 patients diagnosed with pneumonia who were treated in the ICU of Osaka Medical College Hospital between January 2014 and June 2016. A multivariate analysis revealed that the NLR was a significant predictor of mortality in these pneumonia patients.
キーワード inflammation-based prognostic score pneumonia in-hospital mortality
Amo Type Short Communication
発行日 2018-12
出版物タイトル Acta Medica Okayama
72巻
6号
出版者 Okayama University Medical School
開始ページ 591
終了ページ 593
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2018 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 30573914
NAID 120006545162
JaLCDOI 10.18926/AMO/56376
フルテキストURL 72_6_583.pdf
著者 Park, Se-Jin| Jeong, Hwa-Jae| Shin, Hun-Kyu| Park, Jai Hyung| Lee, Jaewook| Cho, Yongun| Lee, Seok Won| Murase, Tsuyoshi| Ikemoto, Sumika| Sugamoto, Kazuomi| Kim, Eugene|
抄録 We retrospectively evaluated the altered biomechanics of the talus in 15 adult patients (7 males, 8 females) with chronic lateral ankle instability when the ankle joint moved actively from full dorsiflexion to full plantarflexion under a non-weight bearing condition. CT images were taken for the unstable ankle and the contralateral normal (control) ankle. Three-dimensional surface models of both ankle joints were reconstructed from the CT data, and we used a computer simulation program to compare both ankle motions of inversion/eversion in the coronal plane, plantarflexion/dorsiflexion in the sagittal plane, and internal rotation/external rotation in the axial plane. This evaluation method provides in vivo, dynamic, and 3D results of ankle motion. In the ankles with chronic lateral instability and the controls, the average talar rotational movement of inversion (+)/eversion (−) was 19.0° and 15.5° and the internal rotation (+)/external rotation (−) was 30.4° and 20.7°, respectively. Paired t-tests revealed significant differences in the amount of inversion (+)/eversion (−) (p=0.012) and internal rotation (+)/external rotation (−) (p<0.001) between unstable and normal ankle joints. The difference of mean rotational movement in internal rotation (9.7°) was greater than that of inversion (3.5°). Rotational instability should be considered when evaluating chronic lateral ankle instability.
キーワード three-dimensional motion analysis chronic lateral ankle instability talus ankle joint
Amo Type Original Article
発行日 2018-12
出版物タイトル Acta Medica Okayama
72巻
6号
出版者 Okayama University Medical School
開始ページ 583
終了ページ 589
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2018 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 30573913
NAID 120006545161