フルテキストURL fulltext.pdf
著者 Tetsunaga, Tomoko| Tetsunaga, Tomonori| Nishida, Keiichiro| Misawa, Haruo| Takigawa, Tomoyuki| Yamane, Kentaro| Tsuji, Hironori| Takei, Yoshitaka| Ozaki, Toshifumi|
キーワード Peripheral neuropathic pain Mirogabalin Pregabalin Adverse event
発行日 2020-05-26
出版物タイトル Journal of Orthopaedic Surgery and Research
15巻
1号
出版者 Springer
開始ページ 191
ISSN 1749-799X
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 publisher
PubMed ID 32456647
DOI 10.1186/s13018-020-01709-3
Web of Science KeyUT 000538017400002
関連URL isVersionOf https://doi.org/10.1186/s13018-020-01709-3
フルテキストURL fulltext.pdf
著者 Ohtsuki, Takashi| Hatipoglu, Omer F.| Asano, Keiichi| Inagaki, Junko| Nishida, Keiichiro| Hirohata, Satoshi|
キーワード cell migration-inducing hyaluronidase 1 (CEMIP) chondrocyte hyaluronan mechanical strain nuclear factor kappa B (NF-kappa B) osteoarthritis
発行日 2020-04-29
出版物タイトル International Journal of Molecular Sciences
21巻
9号
出版者 MDPI
開始ページ 3140
ISSN 1422-0067
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 © 2020 by the authors.
論文のバージョン publisher
PubMed ID 32365591
DOI 10.3390/ijms21093140
Web of Science KeyUT 000535581700111
関連URL isVersionOf https://doi.org/10.3390/ijms21093140
著者 Okazaki, Yuki| Furumatsu, Takayuki| Kamatsuki, Yusuke| Nishida, Keiichiro| Nasu, Yoshihisa| Nakahara, Ryuichi| Saito, Taichi| Ozaki, Toshifumi|
備考 This fulltext is available in March. 2021.|
発行日 2020-03-26
出版物タイトル Journal of Orthopaedic Science
出版者 Elsevier
ISSN 09492658
NCID AA11052566
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 © 2020 The Japanese Orthopaedic Association.
論文のバージョン author
PubMed ID 32223991
DOI 10.1016/j.jos.2020.02.015
関連URL isVersionOf https://doi.org/10.1016/j.jos.2020.02.015
JaLCDOI 10.18926/AMO/57957
フルテキストURL 74_1_77.pdf
著者 Endo, Hirosuke| Akazawa, Hirofumi| Yashiro, Masato| Yamada, Kazuki| Sanki, Tomoaki| Tetsunaga, Tomonori| Nishida, Keiichiro| Furumatsu, Takayuki| Ozaki, Toshifumi|
抄録 Idiopathic chondrolysis of the hip (ICH), a very rare disorder of unknown etiology, occurs mainly in female adolescents. Characterized by pain, limp, stiffness and radiological narrowing joint space from the rapid destruction of the articular cartilage, ICH sometimes results in ankyloses. We present the case of a 10-year-old girl diagnosed with ICH based on arthroscopic inspection and synovium biopsy. The femoral deformity appeared gradually, like a cam-type femoroacetabular impingement. She was treated with intensive rehabilitation and immunosuppressive drug. We later performed an arthroscopic bumpectomy for residual symptoms. She achieved a favorable outcome as a 15-year-old at the latest follow-up.
キーワード idiopathic chondrolysis hip joint medication bump arthroscopy
Amo Type Case Report
発行日 2020-02
出版物タイトル Acta Medica Okayama
74巻
1号
出版者 Okayama University Medical School
開始ページ 77
終了ページ 81
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2020 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 32099253
Web of Science KeyUT 000516606200012
NAID 120006795624
JaLCDOI 10.18926/AMO/57720
フルテキストURL 73_6_537.pdf
著者 Takahara, Yasuhiro| Nishida, Keiichiro| Nakashima, Hirotaka| Ochi, Nobuaki| Uchida, Yoichiro| Kato, Hisayoshi| Itani, Satoru| Nakamura, Makoto| Iwasaki, Yuichi| Tsujimura, Yoshitaka|
抄録 High tibial osteotomy (HTO) procedure is generally contraindicated in rheumatoid arthritis (RA) patients because synovial inflammation may exacerbate joint damage post-surgery. The natural course of joint destruction in RA changed dramatically with new treatment strategies and the introduction of biologic disease-modifying anti-rheumatic drugs (bDMARDs). We report the cases of two RA patients who underwent HTO and whose disease activities were well controlled by bDMARDs. Despite their short follow-up periods, they showed acceptable objective and subjective clinical results. We believe that the combination of bDMARDs and HTO can be indicated for selected RA patients before total knee arthroplasty.
キーワード high tibial osteotomy rheumatoid arthritis biologic DMARD knee surgery
Amo Type Case Report
発行日 2019-12
出版物タイトル Acta Medica Okayama
73巻
6号
出版者 Okayama University Medical School
開始ページ 537
終了ページ 542
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2019 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 31871338
Web of Science KeyUT 000503431400011
フルテキストURL fulltext.pdf
著者 Ohtsuki, Takashi| Shinaoka, Akira| Kumagishi-Shinaoka, Kanae| Asano, Keiichi| Hatipoglu, Omer Faruk| Inagaki, Junko| Takahashi, Ken| Oohashi, Toshitaka| Nishida, Keiichiro| Naruse, Keiji| Hirohata, Satoshi|
発行日 2019-10-15
出版物タイトル Experimental Cell Research
383巻
2号
出版者 Elsevier
開始ページ 111556
ISSN 00144827
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 © 2019 The Authors. Published by Elsevier Inc.
論文のバージョン publisher
PubMed ID 31415758
DOI 10.1016/j.yexcr.2019.111556
Web of Science KeyUT 000488145400017
関連URL isVersionOf https://doi.org/10.1016/j.yexcr.2019.111556
著者 Nishida, Keiichiro| Hashizume, Kenzo| Ozawa, Masatsugu| Takeshita, Ayumu| Kaneda, Daisuke| Nakahara, Ryuichi| Nasu, Yoshihisa| Shimamura, Yasunori| Inoue, Hajime| Ozaki, Toshifumi|
発行日 2017-02
出版物タイトル Acta Medica Okayama
71巻
1号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/AMO/54824
JaLCDOI 10.18926/AMO/54811
フルテキストURL 70_6_477.pdf
著者 Nishida, Keiichiro| Machida, Takahiro| Horita, Masahiro| Hashizume, Kenzo| Nakahara, Ryuichi| Nasu, Yoshihisa| Ohashi, Hideki| Saiga, Kenta| Ozaki, Toshifumi|
抄録 The metatarsophalangeal (MTP) joints are often and predominantly affected in rheumatoid arthritis. The aim of the current study was to describe surgical techniques of shortening oblique osteotomy for lesser metatarsal bone with screw fixation at the osteotomy site, and to investigate the short-term clinical outcomes of our procedure. Twenty-seven feet (78 toes) of 24 RA patients underwent the shortening oblique osteotomy for the correction of deformity at the lesser MTP joints. The average Japanese Society of Surgery of the Foot (JSSF) standard rating system for the RA foot and ankle scale improved significantly from 59.6 points preoperatively to 88.3 points postoperatively (p<0.001). Twenty-four feet (89 ) were free from metatarsalgia and symptomatic callosities at the lesser MTP joint after surgery. Our present findings showed satisfactory early clinical outcomes of the shortening oblique osteotomy of the metatarsal bone with screw fixation for RA forefoot.
キーワード shortening oblique osteotomy rheumatoid arthritis forefoot screw fixation
Amo Type Original Article
発行日 2016-12
出版物タイトル Acta Medica Okayama
70巻
6号
出版者 Okayama University Medical School
開始ページ 477
終了ページ 483
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2016 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 28003673
JaLCDOI 10.18926/AMO/53119
フルテキストURL 69_1_29.pdf
著者 Nakahara, Ryuichi| Nishida, Keiichiro| Hashizume, Kenzo| Harada, Ryouzou| Machida, Takahiro| Horita, Masahiro| Ohtsuka, Aiji| Ozaki, Toshifumi|
抄録 The outcome measures in rheumatology clinical trials (OMERACT) scores are the most mature quantitation system for rheumatoid arthritis (RA) on magnetic resonance imaging (MRI). Direct measuring techniques of synovial volume have been reported with good reproducibility, although few reports have demonstrated the changes of these measures in response to treatment. To assess these clinical responses, we evaluated the correlation of the changes of clinical activity score 28-joints disease activity score (DAS28-CRP) with the changes of OMERACT scores and with synovial volume measurements. Eight RA patients who were treated by biologic agents were examined with MRI of the dominant affected wrist and finger joints before and one year after the treatment. The total OMERACT score was reduced from 48.0 to 41.3, and synovial volume was reduced from 15.4 to 8.8 milliliters. Positive correlations were seen between the changes of DAS28-CRP and the changes of OMERACT synovitis score (r=0.27), OMERACT total score (r=0.43) and synovial volume (r=0.30). Limited to synovium assessment, synovial volume showed a better correlation with DAS28-CRP than the OMERACT synovitis score. On the other hand, the OMERACT total score showed a higher correlation with DAS28-CRP than synovial volume, probably because the OMERACT total score includes scores for bone erosion and bone edema as well.
キーワード magnetic resonance imaging rheumatoid arthritis outcome measures in rheumatology clinical trials scoring system direct volume measuring medical work station
Amo Type Original Article
発行日 2015-02
出版物タイトル Acta Medica Okayama
69巻
1号
出版者 Okayama University Medical School
開始ページ 29
終了ページ 35
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2015 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 25703168
Web of Science KeyUT 000349740300003
関連URL http://ousar.lib.okayama-u.ac.jp/metadata/53113
タイトル(別表記) Hospital and clinic cooperation for the treatment of rheumatoid arthritis in Okayama Prefecture, Japan
フルテキストURL 126_209.pdf
著者 佐田 憲映| 西田 圭一郎| 山中 隆夫| 三崎 健太| 若林 宏| 篠田 潤子| 髙木 徹| 矢野 隆介| 中村 明彦| 難波 良文| 守田 吉孝| 小山 芳伸| 山本 惠嗣| 江澤 和彦| 太田 裕介| 吉原 由樹| 三好 信也| 棗田 将光| 臼井 正明| 吉永 泰彦| 林 充| 山村 昌弘| 橋詰 博行|
抄録 Objective: To survey the current status and problems of cooperation between clinics and hospitals in Okayama Prefecture, Japan for the treatment of rheumatoid arthritis (RA).  Methods: We distributed a questionnaire to 300 of the 983 Okayama Prefecture clinics that had either an internal medicine or orthopedic surgery department, from December 2013 to February 2014. The questionnaire covered practice pattern for RA treatment in clinics, current status of the hospital and clinic cooperation, and acceptance of the biologic therapy.  Results: One hundred clinics responded to the questionnaire. Seventy percent of the clinics reported making referrals to rheumatologists before the initiation of RA treatment, and half of the other 30% of the clinics administered methotrexate as the first-line treatment for RA by their own decision. Sixty-six clinics cooperated with flagship hospitals, conducting medical and laboratory examinations, providing prescriptions, and treating common diseases of patients. These clinics expected the cooperating rheumatologists to follow-up patients every 3 to 6 months and to make the diagnosis, make decisions regarding RA treatment changes, and perform surgery. Seventy-one percent of the clinics responded that cooperation with a hospital is possible even for patients who are administered biologics. As reasons for no cooperation with the flagship hospitals, clinics noted the lack of information about rheumatologists in the area and recent trends in the management of RA.  Conclusion: The current study reported, for the first time, the actual conditions of management of RA in clinics, as well as future problems of hospital and clinic cooperation in Okayama Prefecture.
キーワード 病診連携(hospital and clinic cooperation) 関節リウマチ(rheumatoid arthritis) 生物学的製剤(biologics) メトトレキサート(methotrexate)
出版物タイトル 岡山医学会雑誌
発行日 2014-12-01
126巻
3号
開始ページ 209
終了ページ 215
ISSN 0030-1558
言語 Japanese
著作権者 Copyright (c) 2014 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma.126.209
NAID 130004903246
JaLCDOI 10.18926/AMO/51867
フルテキストURL 67_5_311.pdf
著者 Nishida, Keiichiro| Hashizume, Hiroyuki| Matsukawa, Akihiro| Hashizume, Kenzo| Shimamura, Yasunori| Torigoe, Yasuyuki| Ozaki, Toshifumi|
抄録 We report a case of 4th metacarpal head collapse of a 19-year-old healthy man. MRI revealed T1 low and T2 high regions in the collapsed 4th metacarpal head, as well as in the right 3rd and left 4th metacarpal head. Our initial diagnosis was occult compression fracture due to avascular necrosis, known as Dieterich's disease. However, pathological findings of surgically resected right 4th metacarpal head were compatible with transient osteoporosis and metacarpal head fracture followed by active tissue repair. The autologous osteochondral transplants from costchondral junction survived and maintained their size and shape even at 10-year follow-up.
キーワード occult compression fracture metacarpal head avascular necrosis osteochondral autograft
Amo Type Case Report
発行日 2013-10
出版物タイトル Acta Medica Okayama
67巻
5号
出版者 Okayama University Medical School
開始ページ 311
終了ページ 317
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2013 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 24145731
Web of Science KeyUT 000325836100005
JaLCDOI 10.18926/AMO/49255
フルテキストURL 67_1_35.pdf
著者 Watanabe, Masutaka| Arita, Seizaburo| Hashizume, Hiroyuki| Honda, Mitsugi| Nishida, Keiichiro| Ozaki, Toshifumi|
抄録 The purpose of this study was to quantitatively evaluate Akahori's preoperative classification of cubital tunnel syndrome. We analyzed the results for 57 elbows that were treated by a simple decompression procedure from 1997 to 2004. The relationship between each item of Akahori's preoperative classification and clinical stage was investigated based on the parameter distribution. We evaluated Akahori's classification system using multiple regression analysis, and investigated the association between the stage and treatment results. The usefulness of the regression equation was evaluated by analysis of variance of the expected and observed scores. In the parameter distribution, each item of Akahori's classification was mostly associated with the stage, but it was difficult to judge the severity of palsy. In the mathematical evaluation, the most effective item in determining the stage was sensory conduction velocity. It was demonstrated that the established regression equation was highly reliable (R=0.922). Akahori's preoperative classification can also be used in postoperative classification, and this classification was correlated with postoperative prognosis. Our results indicate that Akahori's preoperative classification is a suitable system. It is reliable, reproducible and well-correlated with the postoperative prognosis. In addition, the established prediction formula is useful to reduce the diagnostic complexity of Akahori's classification.
キーワード cubital tunnel syndrome ulnar nerve Akahoriʼs classification multiple regression analysis
Amo Type Original Article
発行日 2013-02
出版物タイトル Acta Medica Okayama
67巻
1号
出版者 Okayama University Medical School
開始ページ 35
終了ページ 44
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2013 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 23439507
Web of Science KeyUT 000316829900005
関連URL http://ousar.lib.okayama-u.ac.jp/metadata/50647
JaLCDOI 10.18926/AMO/47262
フルテキストURL 65_6_369.pdf
著者 Terada, Chuji| Yoshida, Aki| Nasu, Yoshihisa| Mori, Shuji| Tomono, Yasuko| Tanaka, Masato| Takahashi, Hideo K.| Nishibori, Masahiro| Ozaki, Toshifumi| Nishida, Keiichiro|
抄録 We investigated the expression and localization of high-mobility group box chromosomal protein-1 (HMGB-1) in human osteoarthritic (OA) cartilage in relation to the histopathological grade of cartilage destruction, and examined the role of HMGB-1 in the regulation of proinflammatory cytokine expression in chondrocytes. An immunohistochemical study demonstrated that total HMGB-1-positive cell ratios increase as the Osteoarthritis Research Society International (OARSI) histological grade increased. The population of cytoplasmic HMGB-1-positive chondrocytes was especially increased in the deep layers of higher-grade cartilage. The ratios and localization of receptors for advanced glycation end products (RAGE) expression by chondrocytes in Grade 2, 3, and 4 were significantly higher than those in Grade 1. In vitro stimulation with IL-1β, but not TNFα, significantly upregulated the expression of HMGB-1 mRNA by human OA chondrocytes. Both IL-1β and TNFα promoted the translocation of HMGB-1 from nuclei to cytoplasm. IL-1β and TNFα secretions were stimulated at higher levels of HMGB-1. The results of our study suggest the involvement of HMGB-1 in the pathogenesis of cartilage destruction in OA.
キーワード HMGB-1 RAGE chondrocyte osteoarthritis cartilage
Amo Type Original Article
発行日 2011-12
出版物タイトル Acta Medica Okayama
65巻
6号
出版者 Okayama University Medical School
開始ページ 369
終了ページ 377
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2011 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 22189477
Web of Science KeyUT 000298516900003
著者 Tetsunaga, Tomonori| Furumatsu, Takayuki| Abe, Nobuhiro| Nishida, Keiichiro| Naruse, Keiji| Ozaki, Toshifumi|
発行日 2009-09-18
出版物タイトル Journal of Biomechanics
42巻
13号
資料タイプ 学術雑誌論文
著者 島村 安則| 井上 円加| 小澤 正嗣| 金澤 智子| 斎藤 太一| 中原 龍一| 野田 知之| 西田 圭一郎| 尾﨑 敏文|
発行日 2011-08-01
出版物タイトル 岡山医学会雑誌
123巻
2号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/AMO/40012
フルテキストURL fulltext.pdf
著者 Sasaki, Kentaro| Senda, Masuo| Nishida, Keiichiro| Ota, Haruyuki|
抄録 We examined whether the preoperative time required for the Timed "Up and Go" (TUG) test could predict the risk for deep venous thrombosis (DVT) in patients with hip osteoarthritis after total hip arthroplasty (THA). Eighteen patients with DVT diagnosed by venography were selected, and 18 without DVT of the same age and sex and with the same operated side as the DVT group were selected as a control group. We evaluated the 5 preoperative factors that might affect the occurrence of DVT complications, as follows:disease duration, body mass index, serum total cholesterol, subjective pain evaluated by the visual analog scale, and TUG. The JOA hip score (pain, range of motion, walking ability, and daily life) was also evaluated before surgery. As a postoperative factor, we checked the postoperative day when weight-bearing was initiated. As a result, TUG (DVT, 18.4+/-4.0 sec vs. control, 15.0+/-3.2 sec;p0.01) was only significantly different between the 2 groups. The ROC curve revealed that the cut-off point of 15.3 sec in preoperative time for TUG was sensitive (83.3%) and specific (61.1%) for DVT after THA (odds ratio7.0;95% confidence interval, 1.6-30.8). These results suggested that low preoperative ambulatory ability in patients with hip osteoarthritis might be associated with DVT after THA. An improvement in TUG before surgery might contribute to a decrease in the occurrence of DVT after THA.
キーワード preoperative Timed “Up and Go” test deep venous thrombosis total hip arthroplasty hip osteoarthritis
Amo Type Original Article
発行日 2010-06
出版物タイトル Acta Medica Okayama
64巻
3号
出版者 Okayama University Medical School
開始ページ 197
終了ページ 201
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 20596131
Web of Science KeyUT 000279094300006
著者 Demircan, Kadir| Hirohata, Satoshi| Nishida, Keiichiro| Hatipoglu, Omer F.| Oohashi, Toshitaka| Yonezawa, Tomoko| Apte, Suneel S.| Ninomiya, Yoshifumi|
発行日 2005-5
出版物タイトル Arthritis & Rheumatism
52巻
5号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/AMO/32855
フルテキストURL fulltext.pdf
著者 Shimamura, Yasunori| Nishida, Keiichiro| Imatani, Junya| Noda, Tomoyuki| Hashizume, Hiroyuki| Ohtsuka, Aiji| Ozaki, Toshifumi|
抄録 <p>We biomechanically evaluated the bone fixation rigidity of an ONI plate (Group I) during fixation of experimentally created transcondylar humerus fractures in cadaveric elbows, which are the most frequently observed humeral fractures in the elderly, and compared it with the rigidity achieved by 3 conventional fixation methods:an LCP reconstruction plate 3.5 using a locking mechanism (Group II), a conventional reconstruction plate 3.5 (CRP) with a cannulated cancellous screw (Group III), and a CRP with 2 cannulated cancellous screws (CS) in a crisscross orientation (Group IV). In the axial loading test, the mean failure loads were:Group I, 98.9+/-32.6;Group II, 108.5+/-27.2;Group III, 50.0+/-7.5;and Group IV, 34.5+/-12.2 (N). Group I fixations failed at a significantly higher load than those of Groups III and IV (p0.05). In the extension loading test, the mean failure loads were:Group I, 34.0+/-12.4;Group II, 51.0+/-14.8;Group III, 19.3+/-6.0;and Group IV, 14.7+/-3.1 (N). Group IV fixations showed a significantly lower failure load than those of Group I (p0.05). The fixation rigidities against mechanical loading by the ONI plate and LCP plate were comparable. These results suggested that an ONI system might be superior to the CRP and CS method, and comparable to the LCP method in terms of fixation rigidity for distal humerus fractures.</p>
キーワード distal humerus fracture biomechanics internal fixation elderly
Amo Type Original Article
発行日 2010-04
出版物タイトル Acta Medica Okayama
64巻
2号
出版者 Okayama University Medical School
開始ページ 115
終了ページ 120
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 20424666
Web of Science KeyUT 000276996900005
JaLCDOI 10.18926/AMO/32287
フルテキストURL fulltext.pdf
著者 Shibahara, Motomi| Nishida, Keiichiro| Asahara, Hiroshi| Yoshikawa, Takeshi| Mitani, Shigeru| Kondo, Yoichi| Inoue, Hajime|
抄録 <p>We investigated the presence of osteocyte apoptosis in the necrotic trabeculae of the femoral head of spontaneously hypertensive rat (SHR) using the in situ nick end labeling (TUNEL) method and transmission electron microscopy. The occurrence of osteonecrosis and ossification disturbance was significantly higher in SHR compared with Wistar Kyoto (WKY) rats, and Wistar (WT) rats used as control animals (P < 0.01). A high population of TUNEL positive osteocytes was detected mainly in 10- and 15-week-old SHRs. Sectioned examination of the femoral head of SHRs and WKY rats by electron microscopy revealed apoptotic cell appearances such as aggregation of chromatin particles and lipid formation. In contrast, a positive reaction was significantly lower in osteocytes in the femoral heads of WT rats (P < 0.01). Our results indicate that apoptosis forms an important component of the global pathologic process affecting the femoral head of SHR, which leads to osteonecrosis in this region.</p>
キーワード apoptosis spontaneously hypertensive rat osteonecrosis of the femoral head
Amo Type Article
発行日 2000-04
出版物タイトル Acta Medica Okayama
54巻
2号
出版者 Okayama University Medical School
開始ページ 67
終了ページ 74
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 10806527
Web of Science KeyUT 000086735900003
JaLCDOI 10.18926/AMO/32000
フルテキストURL fulltext.pdf
著者 Matsuo, Masatsugu| Nishida, Keiichiro| Yoshida, Aki| Murakami, Takuro| Inoue, Hajime|
抄録 <p>To clarify the involvement of the caspase family in the pathway of NO-induced chondrocyte apoptosis, osteoarthritis (OA) cartilage obtained from 8 patients undergoing total hip arthroplasty were used for histopathological study. Cartilage samples taken from non-fibrillated areas of femoral head resected during surgery for femoral neck fracture were used for comparison. DNA fragmentation of chondrocytes was detected by the nick end-labeling (TUNEL) method. Apoptosis was further confirmed by transmission electron microscopy. The distributions of nitrotyrosine (NT), caspase-3, and -9 were examined immunohistochemically. The populations of apoptotic as well as NT-, caspase-3-, and -9-positive cells were quantified by counting the number of cells in the superficial, middle, and deep layers, respectively. The TUNEL-positive cells were observed primarily in superficial proliferating chondrocytes, clustering chondrocytes, and deep-layer chondrocytes of OA cartilage. Few positive cells were seen in the proliferating chondrocytes in the middle layer. Positive reactions for caspase-3 and -9 were observed in chondrocytes in similar areas. Histological OA grade showed significant correlations with the mean populations of apoptotic chondrocytes (% apoptosis) over the 3 areas. The populations of NT-positive cells (% NT) over the same areas also showed significant correlation with OA grade. Positivity for caspase-3 closely correlated with the OA grade, % apoptosis and %NT. It was concluded that caspase-3 and -9 could play a role in NO-induced chondrocyte apoptosis in OA cartilage.</p>
キーワード apoptosis caspase nitric oxide osteoarthritis chondrocyte
Amo Type Article
発行日 2001-12
出版物タイトル Acta Medica Okayama
55巻
6号
出版者 Okayama University Medical School
開始ページ 333
終了ページ 340
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
論文のバージョン publisher
査読 有り
PubMed ID 11779095
Web of Science KeyUT 000172838400003