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Akanuma H, Iizuka T, Abe D, Yoshida K, Matsuda N, Sugimoto K, Hashimoto Y, Kanai K. Paraneoplastic anti-N-methyl-D-aspartate receptor encephalitis associated with small cell lung cancer and cytotoxic T-cell-mediated pathology: Case report. Front Immunol 2022; 13:952868. [PMID: 36065447 PMCID: PMC9440277 DOI: 10.3389/fimmu.2022.952868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/25/2022] [Indexed: 12/03/2022] Open
Abstract
Anti-N-methyl-D-aspartate receptor (NMDAR) antibody encephalitis is caused by a reversible inhibition of ion channel actions by autoantibodies and is associated with a relatively good prognosis. Pathological findings of NMDAR encephalitis usually do not show neurophagorous nodules, but rare or mild inflammatory infiltration. We report a patient of small cell lung cancer (SCLC)-related paraneoplastic encephalitis with NMDAR antibodies, a cytotoxic T-cell-mediated pathology of the brain, and a rapid clinical course. This case highlights that the neuropathological diversity of NMDAR encephalitis may be even broader than previously thought and that NMDAR antibodies may also be found in various pathological conditions with a vigorous immune response.
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Affiliation(s)
- Haruna Akanuma
- Department of Neurology, Fukushima Medical University School of Medicine, Fukushima, Japan
- *Correspondence: Haruna Akanuma,
| | - Takahiro Iizuka
- Department of Neurology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Dan Abe
- Department of Neurology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kenji Yoshida
- Department of Neurology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Nozomu Matsuda
- Department of Neurology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kotaro Sugimoto
- Department of Pathology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yuko Hashimoto
- Department of Pathology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kazuaki Kanai
- Department of Neurology, Fukushima Medical University School of Medicine, Fukushima, Japan
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Kuroki N, Abe D, Hasegawa K, Nagatomo R, Okochi M, Kato T, Aoyama T, Hirano H, Ohashi K, Takayama A, Hattori A, Kimata A, Hamabe Y, Suzuki K, Ueda T. Habitual exercise provides better prognosis for cardiac arrest with coronary artery disease. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Although regular physical activity has beneficial cardiovascular effects, exercise can trigger sudden cardiac arrest (SCA). Coronary artery disease (CAD) was identified as the most common cause of an exercise-related out-of-hospital cardiac arrest (OHCA). Regular exercise has been reported to reduce the risk of plaque rupture in animal studies and basic research. Therefore, we compared the coronary artery findings in CAD-OHCA patients with and without habitual exercise.
There have been few reports on whether regular exercise changes the prognosis in OHCA due to CAD (CAD-OHCA). We investigated the association between the better clinical outcome and the regular exercise in patients with CAD-OHCA.
Methods
This is a single-center retrospective analysis from 2006 to 2019. The consecutive 397 patients with OHCA due to myocardial ischemia underwent coronary angiography (CAG). After excluding 73 patients with vasospastic angina, the remaining 324 patients with CAD were enrolled in this study. We divided these patients into two groups according to whether they were habitually exercising (Exercise group: N=37) or not/unknown (Non-Exercise group: N=287).
Clinical outcome was a 30-day survival with minimal neurologic impairment represented by a Glasgow-Pittsburgh Cerebral Performance Categories Scale value 1 or 2.
Results
The patients in the Exercise Group were significantly younger (exercise vs. non-exercise, 57±12 vs. 64±12 years; P<0.01) than those in the non-exercise group. The Exercise group had a lower incidence of diabetes mellitus (22% vs. 42%; P=0.02) and a higher incidence of dyslipidemia (81% vs. 62%; P=0.02) than the non-exercise group. The time from collapse to cardiopulmonary resuscitation (1.4±4.0 vs. 3.0±4.8min) and from collapse to return of spontaneous circulation (11.9±10.0 vs. 28.0±25.3min) were shorter in Exercise group (all p<0.05). The ST-segment elevation was recorded on electrocardiography in fewer of the Exercise group (22% vs. 63%; P<0.01). The finding of culprit lesion in the coronary arteries on arrival resulted significant differences between the 2groups (good collateral and/or TIMI3 flow: 62% vs. 25%, the plaque rupture and/or thrombus: 22% vs. 73%) (all p<0.01) (Figure 1). Kaplan-Meier curve showed Exercise group has better neurological outcome at 30days compared than Non-Exercise (95% vs 51%; P<0.001, log-rank test) (Figure 2). Multivariable Cox proportional hazards models revealed that a habitual exercise was one of the predictors of a good neurological outcome (HR 0.21, 95% CI 0.05–0.92; P=0.039).
Conclusions
The patients with habitual exercise had less plaque rupture, less coronary thrombosis than non-exercise. The patients with regular exercise had better clinical outcomes than non-exercise after CAD-OHCA.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Tokyo Metropolitan Goverment Figure 1. Findings of the culprit lesion in coronar arteriesFigure 2. Kaplan-Meier analysis
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Affiliation(s)
- N Kuroki
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - D Abe
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - K Hasegawa
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - R Nagatomo
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - M Okochi
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Kato
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Aoyama
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - H Hirano
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - K Ohashi
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Takayama
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Hattori
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Kimata
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - Y Hamabe
- Tokyo Metropolitan Bokutoh Hospital, Emergency and Intensive Care Center, Tokyo, Japan
| | - K Suzuki
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Ueda
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
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Murakami T, Abe D, Matsumoto H, Tokimura R, Abe M, Tiksnadi A, Kobayashi S, Kaneko C, Urata Y, Nakamura M, Sano A, Ugawa Y. A patient with McLeod syndrome showing involvement of the central sensorimotor tracts for the legs. BMC Neurol 2019; 19:301. [PMID: 31775676 PMCID: PMC6882147 DOI: 10.1186/s12883-019-1526-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 11/12/2019] [Indexed: 11/17/2022] Open
Abstract
Background McLeod syndrome is a rare X-linked recessive acanthocytosis associated with neurological manifestations including progressive chorea, cognitive impairment, psychiatric disturbances, seizures, and sensorimotor axonal polyneuropathy. However, no studies have investigated the functioning of central sensorimotor tracts in patients with McLeod syndrome. Case presentation A 66-year-old man had experienced slowly progressive chorea and gait disturbance due to lower limb muscle weakness since his early fifties. Blood examinations showed erythrocyte acanthocytosis and the reduction of Kell antigens in red blood cells. Brain magnetic resonance imaging showed atrophy of the bilateral caudate nuclei and putamen. The diagnosis of McLeod syndrome was confirmed by the presence of a mutation of the XK gene on the X chromosome. Somatosensory-evoked potential and transcranial magnetic stimulation studies demonstrated that the central sensory and motor conduction times were abnormally prolonged for the lower extremity but normal for the upper extremity. Conclusions This is the first report of the involvement of the central sensorimotor tracts for the legs in a patient with McLeod syndrome. The clinical neurophysiological technique revealed the central sensorimotor tracts involvements clinically masked by neuropathy.
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Affiliation(s)
- Takenobu Murakami
- Department of Neurology, Fukushima Medical University, Fukushima, Japan. .,Department of Neurology, Tottori Prefectural Kousei Hospital, Kurayoshi, Japan.
| | - Dan Abe
- Department of Neurology, Fukushima Medical University, Fukushima, Japan
| | | | - Ryo Tokimura
- Department of Neurology, Fukushima Medical University, Fukushima, Japan
| | - Mitsunari Abe
- Center for Neurological Disorders, Fukushima Medical University, Fukushima, Japan
| | - Amanda Tiksnadi
- Department of Neurology, Fukushima Medical University, Fukushima, Japan
| | | | - Chikako Kaneko
- Department of Neurology, Southern Tohoku General Hospital, Koriyama, Japan
| | - Yuka Urata
- Department of Psychiatry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Masayuki Nakamura
- Department of Psychiatry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Akira Sano
- Department of Psychiatry, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yoshikazu Ugawa
- Department of Neurology, Fukushima Medical University, Fukushima, Japan.,Department of Neuro-regeneration, Fukushima Medical University, Fukushima, Japan
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Yuba T, Kimura Y, Mukaida T, Aoyama T, Hirano H, Gen S, Ohashi K, Hattori A, Takayama A, Yui Y, Kuroki N, Abe D, Suzuki K. P3708Prognostic significance of electrocardiographic changes after subarachnoid hemorrhage. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background and purpose
Many reports have examined electrocardiographic (ECG) changes after subarachnoid hemorrhage from long ago; however, there are few reports on the prognosis of patients who have an ECG abnormality. Therefore, in this study, the prognoses of patients with subarachnoid hemorrhage showing abnormal ECG findings were retrospectively analyzed.
Methods
Over 30 months from January 2014 to June 2016, 199 patients (mean age, 61.1±17.0 years; 46.7% male) admitted with a subarachnoid hemorrhage (SAH) were enrolled. To assess the mechanism underlying abnormal ECG in the SAH, predictor variables, such as demographics (age, sex, and body surface area), hemodynamics (heart rate and systolic blood pressure), blood biochemical results, neurological assessments (Glasgow Coma Scale), and computed tomography (CT) severity classification (World Federation of Neurosurgical Societies classification) were recorded. The subarachnoid hemorrhage was classified into either the cerebral aneurysm rupture group (N=132) or traumatic subarachnoid hemorrhage group (N=67) and analyzed.
Results
In the cerebral aneurysm rupture group, the QT prolongation was significantly increased compared with the traumatic subarachnoid hemorrhage group (424.8±87.7 ms vs. 400.5±95.8 ms, P<0.05). There was a correlation between consciousness level (Glasgow Coma Scale) on admission and QT prolongation, and significant QT prolongation was observed in critical patients (Pearson's correlation coefficient test P=0.04). ST changes correlated with CT classification severity (WFNS classification), and the most severe group (WFNS Grade 5) showed significant ST changes. On admission, the cerebral aneurysm rupture group and 97.0% in the traumatic subarachnoid hemorrhage group.
Conclusions
Significantly prolonged QT and ST changes are noted in patients with severe aneurysmal subarachnoid hemorrhage. The cause of the ECG abnormality in subarachnoid hemorrhage patients is not yet understood. A small number of experimental animal models have shown that electrocardiogram abnormalities associated with subarachnoid hemorrhage develop in the brain stem, and an autonomic nerve abnormality may also be involved.
A D-dimer is positively correlated with both aneurysm trauma and traumatic subarachnoid hemorrhage and may be used for auxiliary diagnosis of a subarachnoid hemorrhage.
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Affiliation(s)
- T Yuba
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - Y Kimura
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Mukaida
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Aoyama
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - H Hirano
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - S Gen
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - K Ohashi
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Hattori
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - A Takayama
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - Y Yui
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - N Kuroki
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - D Abe
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - K Suzuki
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
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Sanchez A, Xu L, Pierce JL, Lafin JT, Abe D, Bagrodia A, Frazier AL, Amatruda JF. Identification of testicular cancer driver genes by a cross-species comparative oncology approach. Andrology 2019; 7:545-554. [PMID: 31087453 DOI: 10.1111/andr.12644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Germ cell tumors arise in the testis, ovary, or extragonadal locations and have a wide range of histopathological and clinical presentations. The relative lack of animal models of germ cell tumors has impeded functional assessment of candidate driver genes. Previously, we described the development of testicular germ cell tumors in zebrafish carrying a mutation in bmpr1bb, a BMP family receptor, and demonstrated that human germ cell tumors have defects in BMP signaling. OBJECTIVE To further credential the zebrafish model for studies of human germ cell tumor, and to elucidate conserved genetic programs underlying the development of germ cell tumor. MATERIALS AND METHODS We used genetic techniques to ablate the germ cell lineage in developing fish and tested tumors for loss-of-heterozygosity of the wild-type allele of bmpr1bb. We performed comparative gene expression profiling of zebrafish and human germ cell tumors and carried out functional studies of selected genes. RESULTS Ablation of germ cells completely prevents testis tumor formation in the fish, definitively establishing the germ cell origin of the tumors. Germ cell tumors in bmpr1bb heterozygous mutants retain the wild-type allele, indicating haploinsufficiency of bmpr1bb as the mechanism of tumor formation. Comparison of RNA-Seq and microarray data from human and zebrafish germ cell tumors revealed a unique overlapping signature shared by the zebrafish tumors with human seminomas, yolk sac tumors, and embryonal carcinomas. The most highly conserved gene set in this cross-species analysis included potential driver genes such as JUP, which we show to be essential for germ cell tumor cell growth. CONCLUSION Our findings highlight the value of cross-species comparative oncology for the identification of candidate human cancer genes.
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Affiliation(s)
- A Sanchez
- Departments of Pediatrics and Molecular Biology, University of Texas Southwestern Medical, Dallas, TX, USA
| | - L Xu
- Departments of Pediatrics and Molecular Biology, University of Texas Southwestern Medical, Dallas, TX, USA.,Population and Data Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - J L Pierce
- Departments of Pediatrics and Molecular Biology, University of Texas Southwestern Medical, Dallas, TX, USA
| | - J T Lafin
- Department of Urology, University of Texas Southwestern Medical, Dallas, TX, USA
| | - D Abe
- Departments of Pediatrics and Molecular Biology, University of Texas Southwestern Medical, Dallas, TX, USA
| | - A Bagrodia
- Department of Urology, University of Texas Southwestern Medical, Dallas, TX, USA
| | - A L Frazier
- Department of Pediatric Oncology, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Harvard Medical School, Boston, MA, USA
| | - J F Amatruda
- Departments of Pediatrics and Molecular Biology, University of Texas Southwestern Medical, Dallas, TX, USA.,Department of Internal Medicine, University of Texas Southwestern Medical, Dallas, TX, USA
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Kuroki N, Nagao K, Takayama T, Hosokawa Y, Tachibana E, Ashida T, Abe D, Yamamoto T, Takayama M. 2994Impact of extracorporeal membrane oxygenation (ECMO) and intra-aortic balloon pump (IABP) for cardiac arrest. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.2994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- N Kuroki
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - K Nagao
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - T Takayama
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - Y Hosokawa
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - E Tachibana
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - T Ashida
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - D Abe
- Tokyo Metropolitan Bokutoh Hospital, Department of Cardiology, Tokyo, Japan
| | - T Yamamoto
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - M Takayama
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
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Kuroki N, Abe D, Suzuki K, Aoyama T, Hirano H, Sassa T, Ohashi K, Takayama A, Harunari T, Yui Y, Yuba T, Hamabe Y, Iwama T, Sato A. P3243Prognostic impact of physical activity just before out-of-hospital cardiac arrest due to myocardial ischemia. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ohashi K, Abe D, Aoyama T, Hirano H, Sassa T, Takayama A, Harunari T, Yui Y, Kuroki N, Yuba T, Suzuki K. P6090Clinical impact of Gap-Angle Ratio in patient with ostial lesion of right coronary artery undergoing percutaneous coronary intervention. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mao Y, Tamura T, Yuki Y, Abe D, Tamada Y, Imoto S, Tanaka H, Homma H, Tagawa K, Miyano S, Okazawa H. The hnRNP-Htt axis regulates necrotic cell death induced by transcriptional repression through impaired RNA splicing. Cell Death Dis 2016; 7:e2207. [PMID: 27124581 PMCID: PMC4855646 DOI: 10.1038/cddis.2016.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 03/18/2016] [Accepted: 03/21/2016] [Indexed: 12/12/2022]
Abstract
In this study, we identify signaling network of necrotic cell death induced by transcriptional repression (TRIAD) by α-amanitin (AMA), the selective RNA polymerase II inhibitor, as a model of neurodegenerative cell death. We performed genetic screen of a knockdown (KD) fly library by measuring the ratio of transformation from pupa to larva (PL ratio) under TRIAD, and selected the cell death-promoting genes. Systems biology analysis of the positive genes mapped on protein-protein interaction databases predicted the signaling network of TRIAD and the core pathway including heterogeneous nuclear ribonucleoproteins (hnRNPs) and huntingtin (Htt). RNA sequencing revealed that AMA impaired transcription and RNA splicing of Htt, which is known as an endoplasmic reticulum (ER)-stabilizing molecule. The impairment in RNA splicing and PL ratio was rescued by overexpresion of hnRNP that had been also affected by transcriptional repression. Fly genetics with suppressor or expresser of Htt and hnRNP worsened or ameliorated the decreased PL ratio by AMA, respectively. Collectively, these results suggested involvement of RNA splicing and a regulatory role of the hnRNP-Htt axis in the process of the transcriptional repression-induced necrosis.
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Affiliation(s)
- Y Mao
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - T Tamura
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Y Yuki
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - D Abe
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - Y Tamada
- Department of Computer Science, Graduate School of Information Science and Technology, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - S Imoto
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - H Tanaka
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - H Homma
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - K Tagawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
| | - S Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - H Okazawa
- Department of Neuropathology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
- Center for Brain Integration Research, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan
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Matsumoto T, Naito Y, Wada M, Ichikawa D, Takahaski Y, Wada T, Abe D, Shinohara K, Doi K. The maximal effort swimming change the salivary cortisol and testosterone concentrations in saliva. J Sci Med Sport 2015. [DOI: 10.1016/j.jsams.2015.12.476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Osonoi S, Abe D, Baba M, Misaki M, Takeyasu N, Hayashi M. Various impairments of lower-limb in survival patients with percutaneous veno-arterial extracorporeal membrane oxygenation. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.2071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Nishioka K, Abe D, Negoro A, Sato T, Morita M, Kaneko S, Kakuta Y, Arioka H, Hirasawa A. Severe Iron-Deficiency Anemia Diagnosed as Having Malignant Melanoma of Unknown Origin. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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13
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Hoshi T, Sato A, Kawabe M, Sakai S, Kakefuda Y, Abe D, Takeyasu N, Noguchi Y, Aonuma K. The prognostic value of discharge heart rate in patients with impaired left ventricular function after acute myocardial infarction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Adachi T, Yoshida K, Sekiguchi Y, Misaki M, Abe D, Yui Y, Takeyasu N, Aonuma K. Characteristics of catheter ablation of atrial tachycardia involving interatrial septum. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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15
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Abe D, Sato A, Maruta S, Misaki M, Hoshi T, Takeyasu N, Aonuma K. Clinical value of drug-eluting stent over bare-metal stents in large coronary arteries in the patients with ST-segment elevation myocardial infarction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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16
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Yoshida T, Abe D, Fukuoka Y. Phosphocreatine resynthesis during recovery in different muscles of the exercising leg by 31P-MRS. Scand J Med Sci Sports 2013; 23:e313-9. [PMID: 23662804 DOI: 10.1111/sms.12081] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/05/2013] [Indexed: 11/29/2022]
Abstract
To investigate the high-energy phosphate metabolism by (31) P-nuclear magnetic resonance spectroscopy during off-transition of exercise in different muscle groups, such as calf muscles and biceps femoris muscles, seven male long-distance runners (LDR) and nine untrained males (UT) performed both submaximal constant and incremental exercises. The relative exercise intensity was set at 60% of the maximal work rate (60%W max) during both knee flexion and plantar flexion submaximal constant load exercises. The relative areas under the inorganic phosphate (Pi ) and phosphocreatine (PCr) peaks were determined. During the 5-min recovery following the 60%W max, the time constant for the PCr off-kinetics was significantly faster in the plantar flexion (LDR: 17.3 ± 3.6 s, UT: 26.7 ± 6.7 s) than in the knee flexion (LDR: 29.7 ± 4.7 s, UT: 42.7 ± 2.8 s, P < 0.05). In addition, a significantly faster PCr off-kinetics was observed in LDR than in UT for both exercises. The ratio of Pi to PCr (Pi /PCr) during exercise was significantly lower during the plantar flexion than during the knee flexion (P < 0.01). These findings indicated that the calf muscles had relatively higher potential for oxidative capacity than that of biceps femoris muscles with an association of training status.
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Affiliation(s)
- T Yoshida
- Department of Regulatory Physiology, Graduate School of Medicine, Osaka University, Osaka, Japan
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Matsumoto T, Naito Y, Shinohara K, Takahashi Y, Abe D, Asai T, Wada M, Wada T, Inoue D. Is the new FINA (Fédération Internationale de Natation) regulations valid for swimwear enacted in 2010 appropriate? J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kawaguchi T, Takeuchi M, Kawajiri C, Abe D, Nagao Y, Yamazaki A, Sugita Y, Tsukamoto S, Sakai S, Takeda Y, Ohwada C, Sakaida E, Shimizu N, Yokote K, Iseki T, Nakaseko C. Severe hyponatremia caused by syndrome of inappropriate secretion of antidiuretic hormone developed as initial manifestation of human herpesvirus-6-associated acute limbic encephalitis after unrelated bone marrow transplantation. Transpl Infect Dis 2012; 15:E54-7. [DOI: 10.1111/tid.12029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 07/19/2012] [Accepted: 07/31/2012] [Indexed: 11/27/2022]
Affiliation(s)
- T. Kawaguchi
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - M. Takeuchi
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - C. Kawajiri
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - D. Abe
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - Y. Nagao
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - A. Yamazaki
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - Y. Sugita
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - S. Tsukamoto
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | | | - Y. Takeda
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - C. Ohwada
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | - E. Sakaida
- Department of Hematology; Chiba University Hospital; Chiba; Japan
| | | | - K. Yokote
- Department of Clinical Cell Biology and Medicine; Chiba University Graduate School of Medicine; Chiba; Japan
| | | | - C. Nakaseko
- Department of Hematology; Chiba University Hospital; Chiba; Japan
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Ishizawa J, Matsuki E, Abe D, Yamane A, Kunimoto H, Ono Y, Hashimoto N, Kikuchi T, Sakurai M, Matsumoto K, Nakatsuka S, Inoue M, Kato J, Miyakawa Y, Okamoto S. Clinical Assessment of Cases of Hematological Malignancies Diagnosed by Image-Guided Needle Biopsy. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32485-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Abe D, Kubota T, Morozumi T, Shimizu T, Nakasone N, Itagaki M, Yoshie H. Altered gene expression in leukocyte transendothelial migration and cell communication pathways in periodontitis-affected gingival tissues. J Periodontal Res 2011; 46:345-53. [PMID: 21382035 DOI: 10.1111/j.1600-0765.2011.01349.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND OBJECTIVE Gene expression is related to the pathogenesis of periodontitis and plays a crucial role in local tissue destruction and disease susceptibility. The aims of the present study were to identify the expression of specific genes and biological pathways in periodontitis-affected gingival tissue using microarray and quantitative real-time RT-PCR analyses. MATERIAL AND METHODS Healthy and periodontitis-affected gingival tissues were taken from three patients with severe chronic periodontitis. Total RNAs from six gingival tissue samples were used for microarray analyses. Data-mining analyses, such as comparisons, gene ontology and pathway analyses, were performed and biological pathways with a significant role in periodontitis were identified. In addition, quantitative real-time RT-PCR analysis was performed on samples obtained from 14 patients with chronic periodontitis and from 14 healthy individuals in order to confirm the results of the pathway analysis. RESULTS Comparison analyses found 15 up-regulated and 13 down-regulated genes (all of which showed a change of more than twofold in expression levels) in periodontitis-affected gingival tissues. Pathway analysis identified 15 up-regulated biological pathways, including leukocyte transendothelial migration, and five down-regulated pathways, including cell communication. Quantitative real-time RT-PCR verified that five genes in the leukocyte transendothelial migration pathway were significantly up-regulated, and four genes in the cell communication pathway were significantly down-regulated, which was consistent with pathway analysis. CONCLUSION We identified up-regulated genes (ITGB-2, MMP-2, CXCL-12, CXCR-4 and Rac-2) and down-regulated genes (connexin, DSG-1, DSC-1 and nestin) in periodontitis-affected gingival tissues; these genes may be related to the stimulation of leukocyte transendothelial migration and to the the impairment of cell-to-cell communication in periodontitis.
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Affiliation(s)
- D Abe
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Japan
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Matsumoto T, Wada T, Naito Y, Takahashi Y, Izumi T, Inoue D, Abe D, Asai T, Aoba T. The influence of high speed swimsuits on the lactate curve test among competitive swimmers. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2010.10.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Nakasone H, Kanda Y, Takasaki H, Nakaseko C, Sakura T, Fujisawa S, Yokota A, Yano S, Usuki K, Maruta A, Abe D, Hoshino T, Takahashi S, Kanamori H, Okamoto S. Prophylactic impact of imatinib administration after allogeneic stem cell transplantation on the incidence and severity of chronic graft versus host disease in patients with Philadelphia chromosome-positive leukemia. Leukemia 2010; 24:1236-9. [PMID: 20428195 DOI: 10.1038/leu.2010.83] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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23
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Tanaka H, Takeuchi M, Takeda Y, Sakai S, Abe D, Ohwada C, Sakaida E, Shimizu N, Saito Y, Miyagi S, Iwama A, Nakaseko C. Identification of a novel TEL-Lyn fusion gene in primary myelofibrosis. Leukemia 2010; 24:197-200. [PMID: 19710703 DOI: 10.1038/leu.2009.167] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Matsumoto T, Wada T, Inoue D, Wada M, Aoba I, Kato Y, Abe D, Takahashi Y. The muscle vibrations after a competitive swimming training reduces the blood lactate. J Sci Med Sport 2009. [DOI: 10.1016/j.jsams.2008.12.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Ohwada C, Nakaseko C, Sakai S, Takeda Y, Abe D, Takeuchi M, Sakaida E, Masuda S, Shimizu N, Cho R, Nishimura M, Kanai K, Misawa S, Kuwabara S. Successful combination treatment with bevacizumab, thalidomide and autologous PBSC for severe POEMS syndrome. Bone Marrow Transplant 2008; 43:739-40. [DOI: 10.1038/bmt.2008.381] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hotta N, Abe D, Yoshida T, Aoki T, Fukuoka Y. Influence of work rate on dynamics of O2 uptake under hypoxic conditions in humans. J Sports Med Phys Fitness 2008; 48:129-137. [PMID: 18427405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
AIM It was the purpose of the investigation to determine whether an altered work rate could influence the oxygen uptake (V.O(2)) and heart rate (HR) dynamics at hypoxia and normoxia. METHODS Ten males performed a cycle exercise with 2 repetitions of 6 min each at a constant work load while breathing one of two inspiratory O(2) fractions (FIO(2)): 0.12 (moderate hypoxia) and 0.21 (normoxia). Each test began with unloaded pedaling. This was followed by three constant loads, which were 40%, 60%, and 80% of the subject's gas exchange threshold (GET) in hypoxia (F(I)O(2) = 0.12), with the 80% GET load repeated under normoxia (room air). V.O(2) was measured on a breath-by-breath basis and beat-by-beat HR via ECG, and the half time (t1/2) of each parameter was established, following interpolation data. RESULTS There were no remarkable differences in t1/2 V.O(2) dynamics among the 40%, 60% and 80% GET; however, the differences became significant at hypoxia compared with normoxia. The HR dynamics were significantly faster in normoxia compared with hypoxia, independent of work rates. During steady-state exercise, the alterations in HR and cardiac output (Q) using the acetylene rebreathing method depended on increases in the work rate, and a significantly increase in at 80% GET was observed when compared with normoxia. Increases of stroke volume (SV) were unaffected by altered work rates and inspired O(2) concentrations. The arteriovenous oxygen difference (Ca-vO(2)) at a steady-state of exercise increased proportionally with the work rate under hypoxia, and a much greater Ca-vO(2) was observed during normoxic exercise than under hypoxia. CONCLUSION These results seem to suggest that in humans, O(2) uptake dynamics are affected by lower O(2), not by changing work rates at hypoxia, to which the interaction between lower O(2) utilization in exercising muscles and hypoxic-induced greater blood flow can be attributed.
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Affiliation(s)
- N Hotta
- Laboratory of Environmental and Applied Physiology, Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto, Japan
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Tanaka H, Ohwada C, Sakaida E, Takeda Y, Abe D, Oda K, Ozawa S, Shimizu N, Masuda S, Cho R, Nishimura M, Saito Y, Nakaseko C. Successful engraftment by second cord blood transplantation with reduced-intensity conditioning after graft rejection due to hemophagocytic syndrome following initial CBT. Bone Marrow Transplant 2007; 40:995-6. [PMID: 17768388 DOI: 10.1038/sj.bmt.1705842] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Fujikawa K, Nakaseko C, Cho R, Abe D, Oda K, Tanaka H, Ohwada C, Ozawa S, Takeuchi M, Sakaida E, Shimizu N, Naito M, Nishimura M, Saito Y. Molecular remission of multiple myeloma with cytoreductive autografting followed by a dose-reduced allograft. Bone Marrow Transplant 2007; 40:997-9. [PMID: 17724437 DOI: 10.1038/sj.bmt.1705843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Ohwada C, Nakaseko C, Tanaka H, Abe D, Oda K, Ozawa S, Takeuchi M, Shimizu N, Cho R, Saito Y, Nishimura M. Successful matched unrelated BMT for secondary AML which developed simultaneously with relapsed Hodgkin's lymphoma. Bone Marrow Transplant 2007; 39:569-70. [PMID: 17351644 DOI: 10.1038/sj.bmt.1705642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Uno K, Homma S, Satoh T, Nakanishi K, Abe D, Matsumoto K, Oki A, Tsunoda H, Yamaguchi I, Nagasawa T, Yoshikawa H, Aonuma K. Tissue factor expression as a possible determinant of thromboembolism in ovarian cancer. Br J Cancer 2007; 96:290-5. [PMID: 17211468 PMCID: PMC2359996 DOI: 10.1038/sj.bjc.6603552] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Ovarian cancer, and clear cell carcinoma in particular, reportedly increases the risk of venous thromboembolism (VTE). However, the mechanisms remain unclear. Tissue factor (TF) supposedly represents a major factor in the procoagulant activities of cancer cells. The present study examined the involvement of TF expression in VTE for patients with ovarian cancer. Subjects comprised 32 consecutive patients (mean age 49.8 years) with histologically confirmed ovarian cancer. Presence of VTE was examined using a combination of clinical features, D-dimer levels and venous ultrasonography. Immunohistochemical analysis was used to evaluate TF expression into 4 degrees. Venous thromboembolism was identified in 10 of the 32 patients (31%), including five of the 11 patients with clear cell carcinoma. Tissue factor expression was detected in cancer tissues from 24 patients and displayed significant correlations with VTE development (P=0.0003), D-dimer concentration (P=0.003) and clear cell carcinoma (P<0.05). Multivariate analysis identified TF expression as an independent predictive factor of VTE development (P<0.05). Tissue factor (TF) expression is a possible determinant of VTE development in ovarian cancer. In particular, clear cell carcinoma may produce excessive levels of TF and is more likely to develop VTE.
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Affiliation(s)
- K Uno
- Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - S Homma
- Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
- Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, 305-8575 Japan. E-mail:
| | - T Satoh
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - K Nakanishi
- Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - D Abe
- Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - K Matsumoto
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - A Oki
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - H Tsunoda
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - I Yamaguchi
- Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
| | - T Nagasawa
- Department of Clinical and Experimental Hematology, Major of Advanced Biomedical Applications, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - H Yoshikawa
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - K Aonuma
- Cardiovascular Division, Institute of Clinical Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
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Ito S, Matsumoto T, Abe D. A DIFFERENCE OF BLOOD LACTATE LEVEL IN FREESTYLE SWIMMG BETWEEN S-SHAPED AND I-SHAPED STROKE. J Biomech 2007. [DOI: 10.1016/s0021-9290(07)70353-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Matsumoto T, Aoba T, Oku K, Asai T, Abe D, Takahashi Y, Sonoda M, Inoue D. The prevention of the cervical spinal cord injury by the start diving at the Masters swimming meet in Japan. J Sci Med Sport 2006. [DOI: 10.1016/j.jsams.2006.12.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Time-resolved fluorescence spectra of naphthalene in the S(1) state have been measured in various gases below 10(2) kPa. The band shape of the fluorescence changed in an earlier time region after the photoexcitation when an excess energy (3300 cm(-1)) above the 0-0 transition energy was given. The excitation energy dependence of the fluorescence band shape of an isolated naphthalene molecule was measured separately, and the time dependence of the fluorescence band shape in gases was found to be due to the vibrational energy relaxation in the S(1) state. We have succeeded in determining the transient excess vibrational energy by comparing the time-resolved fluorescence band shape with the excitation energy dependence of the fluorescence band shape. The excess vibrational energy decayed almost exponentially. From the slope of the decay rate against the buffer gas pressure, we have determined the collisional decay rate of the excess vibrational energy in various gases. The dependence of the vibrational energy relaxation rate on the buffer gas species was similar to the case of azulene. The comparisons with the results in the low temperature argon and the energy relaxation rate in the S(0) state in nitrogen were also discussed.
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Affiliation(s)
- Y Kimura
- Division of Research Initiatives, International Innovation Center, Kyoto University, Kyoto 606-8501, Japan
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Noumi H, Saha PK, Abe D, Ajimura S, Aoki K, Bhang HC, Endo T, Fujii Y, Fukuda T, Guo HC, Imai K, Hashimoto O, Hotchi H, Kim EH, Kim JH, Kishimoto T, Krutenkova A, Maeda K, Nagae T, Nakamura M, Outa H, Sekimoto M, Saito T, Sakaguchi A, Sato Y, Sawafta R, Shimizu Y, Takahashi T, Tang L, Tamura H, Tanida K, Watanabe T, Xia HH, Zhou SH, Zhu LH, Zhu XF. Sigma-nucleus potential in A=28. Phys Rev Lett 2002; 89:072301. [PMID: 12190516 DOI: 10.1103/physrevlett.89.072301] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2001] [Indexed: 05/23/2023]
Abstract
We have studied the (pi(-),K+) reaction on a silicon target to investigate the sigma-nucleus potential. The inclusive spectrum was measured at a beam momentum of 1.2 GeV/c with an energy resolution of 3.3 MeV (FWHM) by employing the superconducting kaon spectrometer system. The spectrum was compared with theoretical calculations within the framework of the distorted-wave impulse approximation, which demonstrates that a strongly repulsive sigma-nucleus potential with a nonzero size of the imaginary part reproduces the observed spectrum.
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Affiliation(s)
- H Noumi
- High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
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Tanida K, Tamura H, Abe D, Akikawa H, Araki K, Bhang H, Endo T, Fujii Y, Fukuda T, Hashimoto O, Imai K, Hotchi H, Kakiguchi Y, Kim JH, Kim YD, Miyoshi T, Murakami T, Nagae T, Noumi H, Outa H, Ozawa K, Saito T, Sasao J, Sato Y, Satoh S, Sawafta RI, Sekimoto M, Takahashi T, Tang L, Xia HH, Zhou SH, Zhu LH. Measurement of the B(e2) of (7)(lambda)Li and shrinkage of the hypernuclear size. Phys Rev Lett 2001; 86:1982-1985. [PMID: 11289835 DOI: 10.1103/physrevlett.86.1982] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2000] [Indexed: 05/23/2023]
Abstract
We report on the first measurement of a hypernuclear gamma-transition probability. gamma rays emitted in the E2(5/2(+)-->1/2(+)) transition of (7)(Lambda)Li were detected by a large-acceptance germanium detector array (Hyperball), and the lifetime of the parent state ( 5/2(+)) was determined by the Doppler shift attenuation method. The obtained result, 5.8(+0.9)(-0.7)+/-0.7 ps, was then converted into the reduced transition probability [ B(E2)] to be B(E2;5/2(+)-->1/2(+)) = 3.6+/-0.5(+0.5)(-0.4) e(2) fm(4). Compared with the B(E2) of the corresponding E2(3(+)-->1(+)) transition in the 6Li nucleus, our result gives evidence that the size of the 6Li core in (7)(Lambda)Li is smaller than the 6Li nucleus in the free space.
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Affiliation(s)
- K Tanida
- Department of Physics, University of Tokyo, Japan
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Doyon KH, Perrey S, Abe D, Hughson RL. Field testing of VO2peak in cross-country skiers with portable breath-by-breath system. Can J Appl Physiol 2001; 26:1-11. [PMID: 11173666 DOI: 10.1139/h01-001] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Peak aerobic exercise responses were determined in 8 competitive cross-country skiers during field-testing and during an incremental treadmill test (TM) to determine peak oxygen uptake (VáO2peak), heart rate, and oxygen pulse. Field testing consisted of maximal effort roller skiing using diagonal stride (DS) and double poling (DP) techniques. VáO2 was measured during roller skiing by the portable Cosmed K4b2 breath-by-breath system. The portable system was compared against a standard laboratory mixing box system, and no differences were found across the full range of VáO2. During DS, VáO2peak and oxygen pulse were not different from TM, whereas peak HR was lower. With DP, VáO2peak and oxygen pulse were less than DS or TM, whereas peak HR was less than with TM but not different from DS. These results demonstrate the validity and utility of the portable breath-by-breath system for measurement of aerobic energy demand of athletes as they carry out their normal activity.
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Affiliation(s)
- K H Doyon
- Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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Tamura H, Tanida K, Abe D, Akikawa H, Araki K, Bhang H, Endo T, Fujii Y, Fukuda T, Hashimoto O, Imai K, Hotchi H, Kakiguchi Y, Kim JH, Kim YD, Miyoshi T, Murakami T, Nagae T, Noumi H, Outa H, Ozawa K, Saito T, Sasao J, Sato Y, Satoh S, Sawafta RI, Sekimoto M, Takahashi T, Tang L, Xia HH, Zhou SH, Zhu LH. Observation of a spin-flip M1 transition in 7(lambda)Li. Phys Rev Lett 2000; 84:5963-5966. [PMID: 10991099 DOI: 10.1103/physrevlett.84.5963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2000] [Indexed: 05/23/2023]
Abstract
Using a large-acceptance germanium detector array (Hyperball), we have observed a spin-flip M1 gamma transition between the ground-state spin doublet of (7)(Lambda)Li (3/2(+)-->1/2(+)). The observed energy of 691.7+/-0.6(stat)+/-1.0(syst) keV provides crucial information on the strength of the spin-spin interaction between a Lambda and a nucleon. This is the first observation of well-identified hypernuclear gamma transitions using germanium detectors.
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Affiliation(s)
- H Tamura
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
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Abe D, Sakaguchi Y, Tsuchimochi H, Endo M, Miyake K, Miyahiro S, Kanamaru K, Niihata S. Assessment of long-distance running performance in elite male runners using onset of blood lactate accumulation. Appl Human Sci 1999; 18:25-9. [PMID: 10388155 DOI: 10.2114/jpa.18.25] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The purpose of this study was to evaluate the relationship between onset of blood lactate accumulation (OBLA) and long-distance running performance in order to examine whether OBLA can be a good predictor of long-distance running performance even in elite male runners with similar performance levels. Eleven highly-trained male long-distance runners participated in this study. The average running velocities of the individuals' running performance were 5.918 +/- 0.084 m.s-1 and 5.672 +/- 0.095 m.s-1 for 5000 m (V5000) and 10,000 m (V10000), respectively. The blood lactate concentrations and heart rate responses were measured immediately after field running, and the average value of running velocity corresponding to OBLA (VOBLA) was 5.447 +/- 0.132 m.s-1. Variations of these three velocities expressed as a coefficient of variance (CV) ranged from 1.4 to 2.4%. A strong inverse relationship between heart rate corresponding to OBLA (HROBLA) and performance was observed (r = -0.709, p < 0.02 for V5000 and r = -0.830, p < 0.01 for V10000), while there was a lack of significant relationship between VOBLA and performance (r = 0.293, NS for V5000 and r = 0.130, NS for V10000). Furthermore, the average value of HROBLA obtained in this study (174.5 +/- 8.2 b.min-1) was quite similar to that of the heart rate threshold reported by some previous researchers. In conclusion, VOBLA alone could not explain the small variation of long-distance running performance, and HROBLA should be used in place of VOBLA for evaluating long-distance running performance in elite runners with quite similar performance levels.
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Affiliation(s)
- D Abe
- Faculty of Integrated Arts and Sciences, Hiroshima University
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Abe D, Yanagawa K, Yamanobe K, Tamura K. Assessment of middle-distance running performance in sub-elite young runners using energy cost of running. Eur J Appl Physiol Occup Physiol 1998; 77:320-5. [PMID: 9562360 DOI: 10.1007/s004210050340] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The purpose of this study was to assess the validity of v(amax) as an indicator of middle-distance running performance in sub-elite young runners, v(amax) being defined as the quotient maximal oxygen uptake (VO2max) divided by the net energy cost of running (Cr) on a treadmill at a submaximal running velocity (280 m x min[-1]). The VO2max, ventilatory threshold, v(amax), and Cr were assessed in 39 young male sub-elite runners having only small variations in performance level. The relationship between each variable and running performance (at 1500 m, 3000 m, and 5000 m) was evaluated. A trend toward a negative correlation existed between Cr and performance although this was not significant. The VO2max and v(amax) were significantly related to performance. The v(amax) accounted for around 50% of the variability in performance whereas other physiological variables selected in this study were responsible, at best, for approximately 39%. The results presented in this study suggested that v(amax) was a useful indicator of middle-distance running performance in sub-elite young runners with similar performance levels as well as in top elite athletes.
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Affiliation(s)
- D Abe
- Doctoral Program in Education, Hiroshima University, Higashi-Hiroshima, Japan
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Ali MM, Minami K, Ogura K, Hosokawa T, Kazama H, Ozawa T, Watanabe T, Carmel Y, Granatstein VL, Destler WW, Kehs RA, Lou WR, Abe D. Absolute instability for enhanced radiation from a high-power plasma-filled backward-wave oscillator. Phys Rev Lett 1990; 65:855-858. [PMID: 10043040 DOI: 10.1103/physrevlett.65.855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Carmel Y, Minami K, Kehs RA, Destler WW, Granatstein VL, Abe D, Lou WL. Demonstration of efficiency enhancement in a high-power backward-wave oscillator by plasma injection. Phys Rev Lett 1989; 62:2389-2392. [PMID: 10039973 DOI: 10.1103/physrevlett.62.2389] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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