JaLCDOI 10.18926/AMO/31858
フルテキストURL fulltext.pdf
著者 Ogawa, Tomoyuki| Ono, Shigeki| Ichikawa, Tomotsugu| Arimitsu, Seiji| Onoda, Keisuke| Tokunaga, Koji| Sugiu, Kenji| Tomizawa, Kazuhito| Matsui, Hideki| Date, Isao|
抄録

Many studies have shown that a motif of 11 consecutive arginines (11R) is one of the most effective protein transduction domains (PTD) for introducing proteins into the cell membrane. By conjugating this "11R", all sorts of proteins can effectively and harmlessly be transferred into any kind of cell. We therefore examined the transduction efficiency of 11R in cerebral arteries and obtained results showing that 11R fused enhanced green fluorescent protein (11R-EGFP) immediately and effectively penetrated all layers of the rat basilar artery (BA), especially the tunica media. This method provides a revolutionary approach to cerebral arteries and ours is the first study to demonstrate the successful transductionof a PTD fused protein into the cerebral arteries. In this review, we present an outline of our studies and other key studies related to cerebral vasospasm and 11R, problems to be overcome, and predictions regarding future use of the 11R protein transduction method for cerebral vasospasm (CV).

キーワード cerebral vasospasm 11 consecutive arginines (11R) enhanced green fluorescent protein (EGFP)
Amo Type Review
出版物タイトル Acta Medica Okayama
発行日 2009-02
63巻
1号
出版者 Okayama University Medical School
開始ページ 1
終了ページ 7
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
論文のバージョン publisher
査読 有り
PubMed ID 19247417
Web of Science KeyUT 000263730300001
JaLCDOI 10.18926/AMO/32888
フルテキストURL fulltext.pdf
著者 Yasuhara, Takao| Shingo, Tetsuro| Date, Isao|
抄録

Many studies using animals clarify that glial cell line-derived neurotrophic factor (GDNF) has strong neuroprotective and neurorestorative effects on dopaminergic neurons. Several pilot studies clarified the validity of continuous intraputaminal GDNF infusion to patients with Parkinson's disease (PD), although a randomized controlled trial of GDNF therapy published in 2006 resulted in negative outcomes, and controversy remains about the efficacy and safety of the treatment. For a decade, our laboratory has investigated the efficacy and the most appropriate method of GDNF administration using animals, and consequently we have obtained some solid data that correspond to the results of clinical trials. In this review, we present an outline of our studies and other key studies related to GDNF, the current state of the research, problems to be overcome, and predictions regarding the use of GDNF therapy for PD in the future.

キーワード cell transplantation clinical trial encapsulation gene therapy neurodegenerative disease
Amo Type Review
出版物タイトル Acta Medica Okayama
発行日 2007-04
61巻
2号
出版者 Okayama University Medical School
開始ページ 51
終了ページ 56
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
論文のバージョン publisher
査読 有り
PubMed ID 17471304
Web of Science KeyUT 000245875600001
JaLCDOI 10.18926/AMO/43832
フルテキストURL 65_1_59.pdf
著者 Yasuhara, Takao| Miyoshi, Yasuyuki| Date, Isao|
抄録 A case of a Chiari malformation with an extraordinarily thick occipital bone is described. The thick occipital bone might make the posterior fossa narrow with consequent herniation of the cerebellar tonsils to the foramen magnum and formation of a syrinx. At dural plasty, well-developed marginal and occipital sinuses should be deliberately handled with the preservation of normal venous drainage. This case gives us the essence of the occurrence mechanisms of Chiari malformation and foramen magnum decompression.
キーワード Chiari malformation dural plasty foramen magnum decompression syrinx venous drainage
Amo Type Case Report
出版物タイトル Acta Medica Okayama
発行日 2011-02
65巻
1号
出版者 Okayama University Medical School
開始ページ 59
終了ページ 61
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
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 21339798
Web of Science KeyUT 000287620500009
JaLCDOI 10.18926/AMO/48962
フルテキストURL 66_6_429.pdf
著者 Wang, Feifei| Maeda, Nagamasa| Yasuhara, Takao| Kameda, Masahiro| Tsuru, Emi| Yamashita, Tatsuyuki| Shen, Yuan| Tsuda, Masayuki| Date, Isao| Sagara, Yusuke|
抄録 Human umbilical cord blood (HUCB) cells are rich source of immature stem cells, which have the potential to repair lost tissue. Intractable central nervous system (CNS) disorders are important targets for regenerative medicine, and the application of HUCB cells is being investigated in animal models of CNS disorders. Transplantation of HUCB has induced functional improvements in these animal models due to multiple therapeutic effects including neuroprotection, anti-inflammation, angiogenesis, and neurogenesis. HUCB cells are easily available and safer than other stem cells used in transplantation therapy. In this review, we focus on HUCB transplantation as an encouraging therapeutic approach for animal models of neonatal hypoxic-ischemic brain injury and ischemic stroke.
キーワード umbilical cord blood cell transplantation neonatal hypoxic-ischemic brain injury ischemic stroke stem cells
Amo Type Review
出版物タイトル Acta Medica Okayama
発行日 2012-12
66巻
6号
出版者 Okayama University Medical School
開始ページ 429
終了ページ 434
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
著作権者 CopyrightⒸ 2012 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 23254576
Web of Science KeyUT 000312966100001
JaLCDOI 10.18926/AMO/49045
フルテキストURL 66_6_487.pdf
著者 Agari, Takashi| Mihara, Tadahiro| Baba, Koichi| Kobayashi, Katsuhiro| Usui, Naotaka| Terada, Kiyohito| Nakamura, Fumihiro| Matsuda, Kazumi| Date, Isao|
抄録 We report on a case of successful surgical treatment of drug-resistant epilepsy associated with a solitary lesion of periventricular nodular heterotopia (PNH). In the reported patient, intracranial ictal electroencephalography disclosed that seizures did not originate from the heterotopic nodules. However, the seizures were completely suppressed by lesionectomy of PNH alone. Epileptogenesis associated with PNH likely involves a very complex network between PNH and the surrounding cortex, and the disruption of this network may be an effective means of curing intractable, PNH-associated epilepsy.
キーワード periventricular nodular heterotopia epilepsy surgery ictal electroencephalography
Amo Type Case Report
出版物タイトル Acta Medica Okayama
発行日 2012-12
66巻
6号
出版者 Okayama University Medical School
開始ページ 487
終了ページ 492
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
著作権者 CopyrightⒸ 2012 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 23254583
Web of Science KeyUT 000312966100008
JaLCDOI 10.18926/AMO/50414
フルテキストURL 67_3_197.pdf
著者 Yasuhara, Takao| Takahashi, Yuichi| Kumamoto, Shinji| Nakahara, Masayuki| Yoneda, Kotaro| Niimura, Tatsuomi| Tanoue, Takashi| Kusumegi, Akira| Sennari, Takashi| Hijikata, Yasukazu| Manabe, Hiroaki| Miyoshi, Yasuyuki| Date, Isao| Ogawa, Koichi| Nishida, Kenki|
抄録 Some cases with lumbar degenerative diseases require multi-level fusion surgeries. At our institute, 27 and 4 procedures of 3- and 4-level fusion were performed out of a total 672 posterior lumbar interfusions (PLIFs) on patients with lumbar degenerative disease from 2005 to 2010. We present 2 osteoporotic patients who developed proximal vertebral body fracture after 4-level fusion. Both cases presented with gait disability for leg pain by degenerative lumbar scoliosis and canal stenosis at the levels of L1/2-4/5. After 4-level fusion using L1 as the upper instrumented vertebra, proximal vertebral body fractures were found along with the right pedicle fractures of L1 in both cases. One of these patients, aged 82 years, was treated as an outpatient using a hard corset for 24 months, but the fractures were exacerbated over time. In the other patient, posterolateral fusion was extended from Th10 to L5. Both patients can walk alone and have been thoroughly followed up. In both cases, the fracture of the right L1 pedicle might be related to the subsequent fractures and fusion failure. In consideration of multi-level fusion, L1 should be avoided as an upper instrumented vertebra to prevent junctional kyphosis, especially in cases with osteoporosis and flat back posture.
キーワード degenerative lumbar scoliosis osteoporosis pedicle fracture posterior lumbar interbody fusion vertebral body fracture
Amo Type Case Report
出版物タイトル Acta Medica Okayama
発行日 2013-06
67巻
3号
出版者 Okayama University Medical School
開始ページ 197
終了ページ 202
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
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 23804144
Web of Science KeyUT 000320747900010
JaLCDOI 10.18926/AMO/54497
フルテキストURL 70_4_229.pdf
著者 Hishikawa, Tomohito| Sugiu, Kenji| Date, Isao|
抄録 About 5 decades have passed since the concept of moyamoya disease (MMD) was established in Japan. In that time, many clinical MMD studies have been performed from several different points of view, such as epidemiology, pathophysiology, surgical procedures, and prognosis. In addition, rapid developments in MMD genetic analysis have occurred. In light of all this activity, clinicians must continually update their knowledge of MMD in order to improve the prognosis of MMD patients. In this review article, we summarize the clinical MMD studies and introduce cutting-edge findings regarding MMD.
キーワード clinical research moyamoya disease
Amo Type Review
出版物タイトル Acta Medica Okayama
発行日 2016-08
70巻
4号
出版者 Okayama University Medical School
開始ページ 229
終了ページ 236
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
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 27549666
Web of Science KeyUT 000384748600001
JaLCDOI 10.18926/AMO/54813
フルテキストURL 70_6_493.pdf
著者 Yasuhara, Takao| Kuwahara, Ken| Sasada, Susumu| Toyoshima, Atsuhiko| Morimoto, Jun| Kin, Kyohei| Manabe, Hiroaki| Miyoshi, Yasuyuki| Kusumegi, Akira| Takahashi, Yuichiro| Ito, Kiyoshi| Date, Isao|
抄録 Unexpected injuries can have a profound effect on a surgeonʼs performance and thus on patients and surgical departments. Here we describe a technique for performing surgery in the standing position, as done by a surgeon with an Achilles tendon rupture. During his prescribed 45-day non-weight-bearing period for the left ankle after surgery for an Achilles tendon rupture, the surgeon was able to participate in 15 surgeries as an operator or assistant, due to his use of a combination of injured-leg genuflection on a stool and a ʻSurgical Body Supportʼ device. Similarly injured surgeons may benefit from such support.
キーワード Achilles tendon rupture electromyogram genuflection injured leg standing position
Amo Type Short Communication
出版物タイトル Acta Medica Okayama
発行日 2016-12
70巻
6号
出版者 Okayama University Medical School
開始ページ 493
終了ページ 496
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
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 28003675
JaLCDOI 10.18926/AMO/54987
フルテキストURL 71_2_179.pdf
著者 Nosaka, Nobuyuki| Tsukahara, Kohei| Knaup, Emily| Yabuuchi, Toshihiko| Kikkawa, Tomonobu| Fujii, Yosuke| Yashiro, Masato| Yasuhara, Takao| Okada, Ayumi| Ugawa, Toyomu| Nakao, Atsunori| Tsukahara, Hirokazu| Date, Isao|
抄録 Newly published clinical practice guidelines recommend intracranial pressure (ICP) monitoring in critical care for the management of pediatric acute encephalopathy (pAE), but the utility of ICP monitoring for pAE has been poorly studied. We recently performed direct ICP monitoring for two patients. We observed that although the direct ICP monitoring had clinical benefits with less body weight gain and no vasopressor use in both cases, this monitoring technique is still invasive. Future studies should determine the utility of non-invasive ICP monitoring systems in pAE to further improve the quality of intensive-care management.
キーワード cerebral perfusion encephalopathy child intracranial pressure neurological intensive care
Amo Type Short Communication
出版物タイトル Acta Medica Okayama
発行日 2017-04
71巻
2号
出版者 Okayama University Medical School
開始ページ 179
終了ページ 180
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
著作権者 CopyrightⒸ 2017 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 28420900
JaLCDOI 10.18926/AMO/55201
フルテキストURL 71_3_191.pdf
著者 Kobayashi, Katsuhiro| Akiyama, Tomoyuki| Agari, Takashi| Sasaki, Tatsuya| Shibata, Takashi| Hanaoka, Yoshiyuki| Akiyama, Mari| Endoh, Fumika| Oka, Makio| Date, Isao|
抄録  Electroencephalogram (EEG) data include broadband electrical brain activity ranging from infra-slow bands (< 0.1 Hz) to traditional frequency bands (e.g., the approx. 10 Hz alpha rhythm) to high-frequency bands of up to 500 Hz. High-frequency oscillations (HFOs) including ripple and fast ripple oscillations (80-200 Hz and>200 / 250 Hz, respectively) are particularly of note due to their very close relationship to epileptogenicity, with the possibility that they could function as a surrogate biomarker of epileptogenicity. In contrast, physiological high-frequency activity plays an important role in higher brain functions, and the differentiation between pathological / epileptic and physiological HFOs is a critical issue, especially in epilepsy surgery. HFOs were initially recorded with intracranial electrodes in patients with intractable epilepsy as part of a long-term invasive seizure monitoring study. However, fast oscillations (FOs) in the ripple and gamma bands (40-80 Hz) are now noninvasively detected by scalp EEG and magnetoencephalography, and thus the scope of studies on HFOs /FOs is rapidly expanding.
キーワード fast oscillations, epilepsy electroencephalogram time-frequency analysis
Amo Type Review
出版物タイトル Acta Medica Okayama
発行日 2017-06
71巻
3号
出版者 Okayama University Medical School
開始ページ 191
終了ページ 200
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
著作権者 CopyrightⒸ 2017 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 28655938
JaLCDOI 10.18926/AMO/55302
フルテキストURL 71_4_263.pdf
著者 Toyoshima, Atsuhiko| Yasuhara, Takao| Date, Isao|
抄録  To date, many animal studies have indicated the neuroprotective effects of mesenchymal stem cell (MSC) transplantation in ischemic stroke. Several clinical studies have also revealed the safety, feasibility, and neuroprotective effects in ischemic stroke patients. In this review, we present the main approaches of MSC transplantation in ischemic stroke, the mechanisms of MSC therapy, and the current clinical studies on MSC transplantation in ischemic stroke patients. We also explore the safety of MSC transplantation and conclude that MSC therapy will play an important role in the future treatment of ischemic stroke. The optimal timing, approach, and cell dose in the transplantation are important issues for successful clinical application.
キーワード mesenchymal stem cell ischemic stroke cell transplantation clinical trial
Amo Type Review
出版物タイトル Acta Medica Okayama
発行日 2017-08
71巻
4号
出版者 Okayama University Medical School
開始ページ 263
終了ページ 268
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
著作権者 CopyrightⒸ 2017 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 28824181
JaLCDOI 10.18926/AMO/64367
フルテキストURL 77_1_85.pdf
著者 Matsuda, Yuki| Otani, Yoshihiro| Yasuhara, Takao| Ando, Mizuo| Higaki, Takaya| Makino, Takuma| Matsumoto, Hiroshi| Oyama, Tadashi| Nishimori, Hisakazu| Date, Isao|
抄録 A 35-year-old female presented with headache, photophobia and developed sudden loss of vision after having undergone right-side ophthalmectomy and radiochemotherapy for retinoblastoma in infancy. A neoplastic lesion was found in the left middle cranial fossa and was surgically removed. The diagnosis was radiation-induced osteosarcoma with RB1 gene alteration. Although she received chemotherapy for the residual tumor, it progressed 17 months later. Maximal surgical resection with craniofacial reconstruction was required. We utilized two three-dimensional models for surgical planning. She was discharged without neurological deficits other than loss of light perception subsequent to left ophthalmectomy. In cases where retinoblastoma is treated with radiotherapy, long-term follow-up is necessary to monitor for radiation-induced tumor development.
キーワード bone model skull base surgery radiation-induced osteosarcoma RB1 gene alteration
Amo Type Case Report
出版物タイトル Acta Medica Okayama
発行日 2023-02
77巻
1号
出版者 Okayama University Medical School
開始ページ 85
終了ページ 90
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 英語
著作権者 Copyright Ⓒ 2023 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 36849151
Web of Science KeyUT 000952978000001
フルテキストURL K000871.pdf
著者 伊達 勲|
キーワード MHC locus immune reactions
発行日 1990-09-30
資料タイプ 学位論文
学位授与番号 甲第871号
学位授与年月日 1990-09-30
学位・専攻分野 博士(医学)
授与大学 岡山大学
言語 日本語
タイトル(別表記) Novel protein transduction method for cerebral arteries using 11R
フルテキストURL 120_129.pdf
著者 小川 智之| 小野 成紀| 市川 智継| 有光 帥二| 小野田 惠介| 徳永 浩司| 杉生 憲志| 富澤 一仁| 松井 秀樹| 伊達 勲|
キーワード cerebral vasospasm 11R protein transduction method
出版物タイトル 岡山医学会雑誌
発行日 2008-08-01
120巻
2号
開始ページ 129
終了ページ 133
ISSN 00301558
言語 日本語
著作権者 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma.120.129
NAID 120002310545
タイトル(別表記) Adult neural stem and progenitor cell transplantation in CNS diseases
フルテキストURL 120_153.pdf
著者 亀田 雅博| 新郷 哲郎| 村岡 賢一郎| 高橋 和也| 安原 隆雄| 伊達 勲|
キーワード 成体由来神経幹細胞 脳内移植 グリア細胞株由来神経栄養因子(GDNF) 脳虚血 パーキンソン病
出版物タイトル 岡山医学会雑誌
発行日 2008-08-01
120巻
2号
開始ページ 153
終了ページ 157
ISSN 00301558
言語 日本語
著作権者 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma.120.153
NAID 120002310550
フルテキストURL 118_99.pdf
著者 安原 隆雄| 新郷 哲郎| 小林 和樹| 竹内 亮| 矢野 昭正| 村岡 賢一郎| 亀田 雅博| 元 文姫| 早瀬 仁志| 上利 崇| 松井 利浩| 三好 康之| 伊達 勲|
キーワード カプセル化細胞移植 グリア細胞株由来神経栄養因子 (GDNF) 血管内皮成長因子 (VEGF) 脳虚血 パーキンソン病
出版物タイトル 岡山医学会雑誌
発行日 2006-09-01
118巻
2号
開始ページ 99
終了ページ 103
ISSN 0030-1558
言語 日本語
著作権者 Copyright© 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma1947.118.2_99
NAID 10018059355
フルテキストURL 118_205.pdf
著者 道上 宏之| 富澤 一仁| 魏 范研| 松下 正之| 陸 雲飛| 市川 智継| 田宮 隆| 松井 秀樹| 伊達 勲|
キーワード プロテインセラピー 悪性脳腫瘍 p 53 エンドソーム 蛋白導入ドメイン
出版物タイトル 岡山医学会雑誌
発行日 2007-01-04
118巻
3号
開始ページ 205
終了ページ 208
ISSN 00301558
言語 日本語
著作権者 Copyright© 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma1947.118.3_205
NAID 10018454083
フルテキストURL 115_145.pdf
著者 松井 利浩| 伊達 勲|
キーワード neuroendoscope neurosurgery hydrocephalus third ventriculostomy biopsy
出版物タイトル 岡山医学会雑誌
発行日 2005-09-30
115巻
2号
開始ページ 145
終了ページ 150
ISSN 0030-1558
言語 日本語
著作権者 Copyright© 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma1947.115.2_145
NAID 10011896852
タイトル(別表記) Parkinson's disease from a viewpoint of regenerative medicine
フルテキストURL 116_17.pdf
著者 伊達 勲|
抄録 It has long been considered that central nervous system would not regenerate after injury, but this concept has recently been changing due to the development of neuroscience research. Cell grafting, gene transfer and neurotrophic factor administration into the brain and spinal cord are the examples of methods to perform protection and repair. These techniques are expected to be applied to certain neurological disorders such as Parkinson's disease, cerebral ischemia and spinal cord injury. Parkinson's disease is a progressive neurodegenerative disorder characterized by the loss of dopaminergic neurons in the nigrostriatal system. Fetal neurons, chromaffin cells, cell lines, certain genes, neural stem cells, ES cells and bone marrow cells have been investigated as donor cells and vectors to treat Parkinson's disease. This review will summarize the history of neural transplantation in Parkinson's disease and features and prospects of each donor will be discussed.
キーワード Parkinson's disease neural transplantation regeneration
出版物タイトル 岡山医学会雑誌
発行日 2004-05-31
116巻
1号
開始ページ 17
終了ページ 27
ISSN 0030-1558
言語 日本語
著作権者 Copyright© 岡山医学会
論文のバージョン publisher
DOI 10.4044/joma1947.116.1_17
NAID 10013089196
著者 市川 智継| 黒住 和彦| 伊達 勲|
発行日 2008-12-01
出版物タイトル 岡山医学会雑誌
120巻
3号
資料タイプ 学術雑誌論文