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Ishida T, Jin Y, Yaegashi D, Ishida M, Sakai C, Yamaki T, Nakazato K, Tashiro S, Takeishi Y. DNA damage induced by radiation exposure from cardiac catheterization – an analysis in patients and operators. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.3015] [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: 11/15/2022] Open
Abstract
Abstract
Background
The biological effects of low-dose radiation from cardiac imaging or intervention remain largely unknown. This study aimed to evaluate the effects of ionized radiation from cardiac catheterization on genomic DNA integrity and inflammatory cytokines in patients and operators.
Methods
Peripheral mononuclear cells (MNCs) were isolated from patients (n=52) and operators (n=35) before and after coronary angiography and/or percutaneous coronary intervention. Expression of gammaH2AX, a marker for DNA double-strand breaks, was measured by immunofluorescence. Dicentric chromosomes (DICs), a form of chromosome aberrations, were assayed using a fluorescent in situ hybridization technique.
Results
In the patient MNCs, the numbers of gammaH2AX foci and DICs increased after cardiac catheterization by 101±75% and 28±99%, respectively (P<0.05 for both). The mRNA expressions of interleukin (IL)-1α, IL-1β, leukemia inhibitory factor (LIF) and caspase-1 were significantly increased by radiation exposure from cardiac catheterization. The increase in IL-1β was significantly correlated with that of gammaH2AX, but not with dose area product. In the operators, neither gammaH2AX foci nor DICs level was changed, but IL-1β mRNA was significantly increased. Protein expression of IkappaBα was significantly decreased in both groups.
Conclusions
DNA damage was increased in the MNCs of patients, but not of operators, who underwent cardiac catheterization. Inflammatory cytokines were increased both in the patients and operators, presumably through activation of NF-kappaB. Further efforts to reduce radiation exposure from cardiac catheterization are necessary both for patients and operators.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Grants-in-Aid for Scientific Research (KAKENHI)
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Affiliation(s)
- T Ishida
- Fukushima Medical University , Fukushima , Japan
| | - Y Jin
- Fukushima Medical University , Fukushima , Japan
| | - D Yaegashi
- Fukushima Medical University , Fukushima , Japan
| | - M Ishida
- Hiroshima University Graduate School of Biomedical and Health Sciences, Department of Cardiovascular Physiology and Medicine , Hiroshima , Japan
| | - C Sakai
- Hiroshima University Graduate School of Biomedical and Health Sciences, Department of Cardiovascular Physiology and Medicine , Hiroshima , Japan
| | - T Yamaki
- Fukushima Medical University , Fukushima , Japan
| | - K Nakazato
- Fukushima Medical University , Fukushima , Japan
| | - S Tashiro
- Hiroshima University Research Institute for Radiation Biology and Medicine, Department of Cellular Biology , Hiroshima , Japan
| | - Y Takeishi
- Fukushima Medical University , Fukushima , Japan
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Hashimoto T, Mishima H, Sakai C, Koretaka Y, Saito Y. An exploratory study of factors associated with long-term, high-dose opioid prescription in cancer patients in Japan based on a medical claims database. Support Care Cancer 2022; 30:6879-6888. [PMID: 35543815 PMCID: PMC9213265 DOI: 10.1007/s00520-022-07121-3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 05/04/2022] [Indexed: 11/30/2022]
Abstract
Purpose As the cancer survivors increase, patients using long-term and high-dose opioids are also increasing. Therefore, the promotion of appropriate use is important. This study investigated the actual status of opioid prescriptions in Japan and identified factors associated with long-term, high-dose prescription. Methods We conducted a case-control study using a hospital-based administrative claims database. Patients with a diagnosis of cancer and prescriptions of opioids were included. Patients who received continuous opioid for less than 183 days were defined as the “control,” and patients who received continuous opioid at higher dose levels (≥ 120 mg/day of oral morphine equivalent) for 183 days or more were defined as the “case.” The case was subdivided into two groups: those with the duration of less than 730 days (case I) and 730 days or more (case II). After describing factors possibly associated with long-term, high-dose opioid prescription, ordinal logistic regression analysis was conducted. Results We included 19,176 patients; of these, 13,517 were in the control, 111 were in the case I, and 682 were in the case II. The analysis showed that distant metastasis, back pain, dose of opioids, non-opioid analgesics, prescription, and chemotherapy during the opioid prescriptions were significantly associated with long-term, high-dose opioid prescription. Conclusion Four percent of the study population were prescribed long-term, high-dose opioids, and several comorbidities and concomitant medications were identified as associated factors. Opioids might be also prescribed for non-cancer chronic pain. It is necessary to properly distinguish the type of pain and to use opioids safely and appropriately. Supplementary Information The online version contains supplementary material available at 10.1007/s00520-022-07121-3.
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Affiliation(s)
- Tatsuya Hashimoto
- Department of Anesthesiology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, Japan.
| | | | - Chika Sakai
- Medical Affairs Department, Shionogi & Co. Ltd., Osaka, Japan
| | | | - Yoji Saito
- Department of Anesthesiology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo, Shimane, Japan
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Naya N, Tsuji T, Nishigaki N, Sakai C, Chen Y, Jung S, Kosaka H. The Burden of Undiagnosed Adults With Attention-Deficit/Hyperactivity Disorder Symptoms in Japan: A Cross-Sectional Study. Cureus 2021; 13:e19615. [PMID: 34956750 PMCID: PMC8674614 DOI: 10.7759/cureus.19615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Accepted: 11/14/2021] [Indexed: 01/26/2023] Open
Abstract
Background Symptoms experienced by adult patients with attention-deficit/hyperactivity disorder (ADHD) frequently result in functional impairment across academic/occupational functioning, daily life, and social functioning. A substantial proportion of undiagnosed and untreated ADHD has been suggested in Japan. This study aims to better understand the potential undiagnosed ADHD population in Japan by quantifying the burden associated with ADHD symptoms through a comparison of the prevalence of comorbidities, health-related quality of life (HRQoL), work productivity and activity impairment (WPAI), and healthcare resource utilization (HRU) between undiagnosed potential ADHD respondents who were screened positive and negative using Adult ADHD Self-Report Scale (ASRS)-v1.1. Methodology Respondents from Japan National Health and Wellness Survey 2016 who answered ASRS-v1.1 without an ADHD diagnosis were included. Respondents checking ≥4 items from ASRS-A and ≥9 from ASRS-A+B were classified as ASRS A+ (n = 309) and ASRS AB+ (n = 227), respectively. ASRS negative (n = 9,280) were respondents who were neither ASRS A+ nor ASRS AB+. Data on the presence of comorbidities, HRQoL, WPAI, and HRU were compared. Results ASRS A+ and ASRS AB+ respondents reported higher coexistence of mental comorbidities (depression, generalized anxiety disorder, bipolar disorder, obsessive-compulsive disorder, etc.), sleep problems (insomnia, narcolepsy, sleep apnea, etc.), and physical comorbidities (non-alcoholic steatohepatitis, allergy, and asthma). They also reported greater WPAI and HRU and lower HRQoL than matched ASRS-negative respondents. Conclusions A significantly higher burden was identified among undiagnosed adults with potential ADHD symptoms. Appropriate diagnosis may help those at risk or those who present with symptoms overlapping with ADHD.
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Affiliation(s)
- Noriyuki Naya
- Medical Affairs Department, Shionogi & Co. Ltd., Osaka, JPN
| | | | | | - Chika Sakai
- Medical Affairs Department, Shionogi & Co. Ltd., Osaka, JPN
| | | | | | - Hirotaka Kosaka
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Fukui, JPN
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Fujita Y, Iihara H, Shimokawa M, Sakai C, Ikemura S, Hirose C, Kotake M, Funaguchi N, Gomyo T, Imai H, Hakamata J, Kaito D, Minato K, Arai T, Kawazoe H, Suzuki A, Ohno Y, Okura H. 1673P Efficacy and safety of 5 mg olanzapine for the prevention of carboplatin-induced nausea and vomiting in patients with thoracic malignancies: A prospective multicenter phase II study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1645] [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] Open
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Sunohara T, Imamura H, Goto M, Fukumitsu R, Matsumoto S, Fukui N, Oomura Y, Akiyama T, Fukuda T, Go K, Kajiura S, Shigeyasu M, Asakura K, Horii R, Sakai C, Sakai N. Neck Location on the Outer Convexity is a Predictor of Incomplete Occlusion in Treatment with the Pipeline Embolization Device: Clinical and Angiographic Outcomes. AJNR Am J Neuroradiol 2021; 42:119-125. [PMID: 33184073 DOI: 10.3174/ajnr.a6859] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/11/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE With the increasing use of the Pipeline Embolization Device for the treatment of aneurysms, predictors of clinical and angiographic outcomes are needed. This study aimed to identify predictors of incomplete occlusion at last angiographic follow-up. MATERIALS AND METHODS In our retrospective, single-center cohort study, 105 ICA aneurysms in 89 subjects were treated with Pipeline Embolization Devices. Patients were followed per standardized protocol. Clinical and angiographic outcomes were analyzed. We introduced a new morphologic classification based on the included angle of the parent artery against the neck location: outer convexity type (included angle, <160°), inner convexity type (included angle, >200°), and lateral wall type (160° ≤ included angle ≤200°). This classification reflects the metal coverage rate and flow dynamics. RESULTS Imaging data were acquired in 95.3% of aneurysms persistent at 6 months. Complete occlusion was achieved in 70.5%, and incomplete occlusion, in 29.5% at last follow-up. Multivariable regression analysis revealed that 60 years of age or older (OR, 5.70; P = .001), aneurysms with the branching artery from the dome (OR, 10.56; P = .002), fusiform aneurysms (OR, 10.2; P = .009), and outer convexity-type saccular aneurysms (versus inner convexity type: OR, 30.3; P < .001; versus lateral wall type: OR, 9.71; P = .001) were independently associated with a higher rate of incomplete occlusion at the last follow-up. No permanent neurologic deficits or rupture were observed in the follow-up period. CONCLUSIONS The aneurysm neck located on the outer convexity is a new, incomplete occlusion predictor, joining older age, fusiform aneurysms, and aneurysms with the branching artery from the dome. No permanent neurologic deficits or rupture was observed in the follow-up, even with incomplete occlusion.
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Affiliation(s)
- T Sunohara
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan.
| | - H Imamura
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - M Goto
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - R Fukumitsu
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - S Matsumoto
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - N Fukui
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Y Oomura
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - T Akiyama
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - T Fukuda
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - K Go
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - S Kajiura
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - M Shigeyasu
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - K Asakura
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - R Horii
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - C Sakai
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - N Sakai
- From the Department of Neurosurgery, Kobe City Medical Center General Hospital, Kobe, Japan
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Sakai C, Tsuji T, Nakai T, Namba Y, Mishima H, Fujiwara M, Matsunaga H. Change in Antidepressant Use After Initiation of ADHD Medication in Japanese Adults with Comorbid Depression: A Real-World Database Analysis. Neuropsychiatr Dis Treat 2021; 17:3097-3108. [PMID: 34675521 PMCID: PMC8520036 DOI: 10.2147/ndt.s325498] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/23/2021] [Indexed: 11/23/2022] Open
Abstract
PURPOSE To better understand the treatment of comorbid depression in adults with attention-deficit/hyperactivity disorder (ADHD) by investigating the prescription patterns of antidepressants, anxiolytics, and hypnotics after commencing ADHD medication. PATIENTS AND METHODS In this retrospective observational study in Japan, the data of patients initiating ADHD medication while already receiving antidepressants (ADHD group) and of patients prescribed antidepressants but not diagnosed with ADHD (control group) were extracted from an electronic medical record database. Additionally, one-to-one matching for patients in both groups was performed using sex, age, baseline dosage of antidepressants, and any comorbid psychiatric disorders as covariates. The observation period included a 1-month baseline period and a 6-month follow-up period. The percentage of patients prescribed antidepressants and the mean prescribed dosages were compared between matched-cohort groups. Prescriptions for anxiolytics and hypnotics were also assessed. RESULTS In the matched cohorts, consisting of 239 patients in the ADHD group and 239 patients from the unmatched control cohort of 10,485, the percentage of patients prescribed antidepressants decreased from baseline in both groups to 94.1% in the ADHD group and 89.5% in the control group during the first month of follow-up, and 77.0% and 78.7%, respectively, during the last month. There were no significant differences between groups in the percentages of patients prescribed antidepressants or in the mean prescribed dosages of antidepressants at any time point over the follow-up period. Prescribed dosages of anxiolytics and hypnotics tended to be lower in the ADHD group. CONCLUSION The two groups were medicated similarly with respect to their depressive symptoms over 6 months. Our results suggest that in patients with ADHD and comorbid depression, which is more likely to be more severe than in depression without ADHD, depressive symptoms are managed following initiation of add-on ADHD medication, without requiring higher antidepressant dosages than in patients with depression only.
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Affiliation(s)
- Chika Sakai
- Medical Affairs Department, Shionogi & Co. Ltd, Osaka, Japan
| | - Toshinaga Tsuji
- Medical Affairs Department, Shionogi & Co. Ltd, Osaka, Japan
| | - Toru Nakai
- Medical Affairs Department, Shionogi & Co. Ltd, Osaka, Japan
| | - Yuki Namba
- Medical Affairs Department, Shionogi & Co. Ltd, Osaka, Japan
| | | | | | - Hisato Matsunaga
- Department of Neuropsychiatry, Hyogo College of Medicine, Hyogo, Japan
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Naya N, Sakai C, Okutsu D, Kiguchi R, Fujiwara M, Tsuji T, Iwanami A. Efficacy and safety of guanfacine extended-release in Japanese adults with attention-deficit/hyperactivity disorder: Exploratory post hoc subgroup analyses of a randomized, double-blind, placebo-controlled study. Neuropsychopharmacol Rep 2020; 41:26-39. [PMID: 33305542 PMCID: PMC8182954 DOI: 10.1002/npr2.12152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 07/17/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 01/01/2023] Open
Abstract
Aim Previously, we reported on the efficacy and safety of guanfacine extended‐release (GXR) in Japanese adults with attention‐deficit/hyperactivity disorder (ADHD) from a phase 3, double‐blind, placebo‐controlled, randomized trial. In this exploratory post hoc analysis, we assessed the efficacy and/or safety of GXR in the following subgroups: ADHD‐combined (ADHD‐C) and ADHD‐predominantly inattentive (ADHD‐I) subtypes, age (≥31, <31 years), sex (male, female), and body weight (≥50, <50 kg). Methods The primary efficacy endpoint was change from baseline in the Japanese version of the investigator‐rated ADHD‐Rating Scale‐IV (ADHD‐RS‐IV) with adult prompts (total scores) at week 10. Results The efficacy analysis population included 200 patients (GXR, 100; placebo, 100). ADHD‐RS‐IV total score effect sizes (GXR vs placebo) were similar across all subgroups (total population: 0.52, ADHD‐C: 0.51, ADHD‐I: 0.52, ≥31 years: 0.61, <31 years: 0.47, male: 0.50, female: 0.57). There were no major differences in the incidence/types of treatment‐emergent adverse events (TEAEs) across the subgroups. The incidence of significant TEAEs (34.3%, 10.6%) and TEAEs leading to discontinuation (34.3%, 12.1%) were approximately three times higher in females than males, respectively. The incidence of TEAEs in patients weighing <50 kg and ≥50 kg was 100% and 73.6% during dose optimization and 40% and 24.4% during the maintenance period, respectively. Conclusion Findings from this post hoc analysis in adults with ADHD support the efficacy and safety of GXR regardless of ADHD subtype, age, or sex and suggest that careful monitoring for TEAEs and GXR dose optimization is considered for all patients, as needed. In this exploratory post hoc analysis, we assessed the efficacy and/or safety of guanfacine extended release (GXR) in the following subgroups: attention‐deficit/hyperactivity disorder (ADHD) subtypes (ADHD‐combined, ADHD‐predominantly inattentive), age (≥31 years, <31 years), sex (male, female), and body weight (<50 kg, ≥50 kg). ADHD‐Rating Scale‐IV with adult prompts total score effect sizes (GXR vs placebo at 10 weeks) were similar across all subgroups. The findings support the efficacy and safety of GXR in adults regardless of ADHD subtype, age, or sex and suggest that careful monitoring for TEAEs and GXR dose optimization is considered for all patients, as needed.![]()
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Affiliation(s)
- Noriyuki Naya
- Medical Affairs Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Chika Sakai
- Medical Affairs Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Daiki Okutsu
- Clinical Research Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Ryo Kiguchi
- Data Science Office, Shionogi & Co., Ltd., Osaka, Japan
| | | | - Toshinaga Tsuji
- Medical Affairs Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Akira Iwanami
- Department of Psychiatry, Showa University, School of Medicine, Tokyo, Japan
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Sakai C. [Pharmacological properties and clinical effects of the ADHD drug, Lisdexamfetamine (Vyvanse ® capsules 20 mg and 30 mg)]. Nihon Yakurigaku Zasshi 2020; 155:413-425. [PMID: 33132261 DOI: 10.1254/fpj.20033] [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] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Lisdexamfetamine dimesylate (hereinafter referred to as "lisdexamfetamine"; brand name, Vyvanse®), was developed for the treatment of attention-deficit/hyperactivity disorder (ADHD). This drug, which is classified as a central nervous system (CNS) stimulant for once-daily oral administration, received marketing approval in March 2019 and was launched in December 2019 in Japan. Lisdexamfetamine is a prodrug that is hydrolyzed to its active form d-amphetamine in the blood following oral administration. Pharmacologically, d-amphetamine competitively inhibits the dopamine transporter (DAT) and the noradrenaline transporter (NAT) to increase dopamine (DA) and noradrenaline (NA) concentrations in the synaptic cleft. In addition to inhibiting the reuptake of DA and NA, d-amphetamine has also an effect in promoting the release of these neurotransmitters by being taken up into neuronal cells and then acting on the vesicular monoamine transporter. The mechanisms of action by which d-amphetamine exerts a therapeutic effect on ADHD may be based on the above-described effects. Clinical studies conducted in Japan and overseas have demonstrated the efficacy of lisdexamfetamine over placebo in the treatment of pediatric ADHD patients. The most of the adverse events with a higher incidence than in the placebo were mild, and long-term administration of the drug was not associated with an increase in the incidence of adverse events or the rate of treatment discontinuation. Lisdexamfetamine, which is designated as raw material for stimulants and therefore requires strict distribution control in Japan, is expected to be effective in the treatment of ADHD patients with inadequate responses to existing therapeutic agents.
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Affiliation(s)
- Chika Sakai
- Medical Affairs Department, Shionogi & Co., Ltd
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9
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Sakai C, Ishida M, Tashiro S, Yoshizumi M, Ishida T. Impaired DNA damage response promotes atherosclerosis by enhancing cellular senescence and proinflammatory activation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3799] [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
DNA damage likely contributes to the pathogenesis and progression of atherosclerosis. Chemotherapy, radiotherapy and some DNA damage response (DDR) syndromes are known to increase atherosclerosis. However, causative links between DNA damage and atherosclerosis are yet to be established.
Purpose
The aim of this study was to investigate the role of impaired DDR in atherosclerosis.
Methods and results
Ku80, a DNA repair protein, -deficient apolipoprotein E knockout mice (Ku80+/− ApoE−/−) and ApoE−/m- mice were fed on high-fat diet for 4 weeks, and then oil red O staining was performed on their isolated aortas. Plaque area was significantly increased in Ku80+/− ApoE−/− mice. Immunohistochemical analysis of lesions from Ku80+/− ApoE−/− mice revealed enhanced accumulation of DNA double-strand breaks (DSBs). Similar results were obtained from Ku80+/− ApoE−/− mice fed on high-fat diet for 2 weeks which was considered as the early stages of atherosclerosis. mRNA levels of inflammatory cytokines such as IL-6 and MCP-1 in the aorta were significantly elevated in Ku80+/− ApoE−/− mice compared with those of ApoE−/− mice. To investigate whether impaired DDR is associated with the increased expression of inflammatory cytokines, vascular smooth muscle cells were isolated from Ku80 WT and Ku80+/− mice and subjected to quantitative RT-PCR analysis. mRNA levels of IL-6 and MCP-1 were significantly elevated in Ku80+/− cells. In addition, IκBα protein expression was significantly decreased in Ku80+/− cells, which suggested enhanced NF-κB activation in those cells. Immunofluorescent analysis revealed accumulation of DSBs and persistent DDR in Ku80+/− cells. In addition, elevated p16 mRNA level and senescence-associated β-gal activity were observed in Ku80+/− cells.
Conclusion
These results suggested that impaired DDR promoted atherosclerosis partly through cellular senescence and enhanced proinflammatory activation. Therefore, therapies targeting enhancing DDR may be beneficial in the prevention of DNA damage-induced atherosclerosis.
Funding Acknowledgement
Type of funding source: Public Institution(s). Main funding source(s): KAKENHI
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Affiliation(s)
- C Sakai
- Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - M.I Ishida
- Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - S.T Tashiro
- Hiroshima University Research Institute for Radiation Biology and Medicine, Hiroshima, Japan
| | - M.Y Yoshizumi
- Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - T.I Ishida
- Fukushima Medical University, Fukushima, Japan
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Imano N, Nishibuchi I, Kawabata E, Kinugasa Y, Sakai C, Ishida M, Akita T, Kimura T, Murakami Y, Nagata Y, Tashiro S. Association Between Acute Toxicities Of Chemoradiotherapy And Chromosomal Aberrations In Peripheral Blood Lymphocytes In Esophageal Cancer Patients. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1722] [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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Ino Y, Shimauchi A, Tachi T, Noguchi Y, Sakai C, Iguchi K, Kano A, Teramachi H. Community pharmacy-level factors associated with medical and nursing home facility collaboration in Japan. Pharmazie 2020; 74:630-638. [PMID: 31685091 DOI: 10.1691/ph.2019.9489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The aim of this study was to clarify the community pharmacy-level factors related to experiences of and attitudes toward collaboration with medical and nursing home care facilities. We conducted a postal questionnaire survey of all pharmacies in Gifu, Japan, assessing the experiences and attitudes of supervising pharmacists regarding the following activities related to collaboration between medical facilities and nursing home care facilities: regional care meetings/service adjustment meetings, case discussion conferences, joint workshops/continuing education conferences, community service, information sharing through medical cooperation networks, and pharmacists accompanying physicians on home care visits. The factors significantly related to inter-professional collaboration were the family pharmacist guidance fee and the number of patients offered pharmaceutical care through cooperation with other medical facilities. Items on attitudes toward collaborating with other medical facilities showed similar results. Overall, policies that support inter-professional collaboration to create a foundation, establish mechanisms to facilitate collaboration, and identify collaborative activities that can be carried out at each pharmacy should be developed.
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Kumagai S, Togashi Y, Sakai C, Kawazoe A, Kawazu M, Ueno T, Sato E, Kuwata T, Kinoshita T, Yamamoto M, Nomura S, Tsukamoto T, Mano H, Shitara K, Nishikawa H. An Oncogenic Alteration Creates a Microenvironment that Promotes Tumor Progression by Conferring a Metabolic Advantage to Regulatory T Cells. Immunity 2020; 53:187-203.e8. [PMID: 32640259 DOI: 10.1016/j.immuni.2020.06.016] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 03/31/2020] [Accepted: 06/19/2020] [Indexed: 12/14/2022]
Abstract
Only a small percentage of patients afflicted with gastric cancer (GC) respond to immune checkpoint blockade (ICB). To study the mechanisms underlying this resistance, we examined the immune landscape of GC. A subset of these tumors was characterized by high frequencies of regulatory T (Treg) cells and low numbers of effector T cells. Genomic analyses revealed that these tumors bore mutations in RHOA that are known to drive tumor progression. RHOA mutations in cancer cells activated the PI3K-AKT-mTOR signaling pathway, increasing production of free fatty acids that are more effectively consumed by Treg cells than effector T cells. RHOA mutant tumors were resistant to PD-1 blockade but responded to combination of PD-1 blockade with inhibitors of the PI3K pathway or therapies targeting Treg cells. We propose that the metabolic advantage conferred by RHOA mutations enables Treg cell accumulation within GC tumors, generating an immunosuppressive TME that underlies resistance to ICB.
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Affiliation(s)
- Shogo Kumagai
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center (EPOC), National Cancer Center, Tokyo/Chiba, Japan; Department of Immunology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yosuke Togashi
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center (EPOC), National Cancer Center, Tokyo/Chiba, Japan.
| | - Chika Sakai
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center (EPOC), National Cancer Center, Tokyo/Chiba, Japan
| | - Akihito Kawazoe
- Department of Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - Masahito Kawazu
- Division of Cellular Signaling, Group for Cancer Development and Progression, National Cancer Center Research Institute, Tokyo, Japan
| | - Toshihide Ueno
- Division of Cellular Signaling, Group for Cancer Development and Progression, National Cancer Center Research Institute, Tokyo, Japan
| | - Eiichi Sato
- Department of Pathology, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Takeshi Kuwata
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital East, Chiba, Japan
| | - Takahiro Kinoshita
- Department of Gastric Surgery, National Cancer Center Hospital East, Chiba, Japan
| | - Masami Yamamoto
- Division of Physiological Pathology, Department of Applied Science, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Sachiyo Nomura
- Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tetsuya Tsukamoto
- Department of Pathology, Graduate School of Medicine, Fujita Health University, Aichi, Japan
| | - Hiroyuki Mano
- Division of Cellular Signaling, Group for Cancer Development and Progression, National Cancer Center Research Institute, Tokyo, Japan
| | - Kohei Shitara
- Department of Gastrointestinal Oncology, National Cancer Center Hospital East, Chiba, Japan
| | - Hiroyoshi Nishikawa
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center (EPOC), National Cancer Center, Tokyo/Chiba, Japan; Department of Immunology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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13
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Komatsu-Fujii T, Nonoyama S, Ogawa M, Fukumoto T, Sakai C, Yoshimoto Y, Nakanishi K, Abe N, Tanabe H. Subcutaneous pseudocystic phaeohyphomycosis due to Exophiala jeanselmei mimicking an epidermal cyst. J Eur Acad Dermatol Venereol 2020; 34:e745-e747. [PMID: 32374461 DOI: 10.1111/jdv.16585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | - S Nonoyama
- Department of Dermatology, Tenri Hospital, Tenri, Japan
| | - M Ogawa
- Department of Dermatology, Tenri Hospital, Tenri, Japan
| | - T Fukumoto
- Department of Dermatology, Tenri Hospital, Tenri, Japan
| | - C Sakai
- Department of Plastic Surgery, Tenri Hospital, Tenri, Japan
| | - Y Yoshimoto
- Department of Plastic Surgery, Tenri Hospital, Tenri, Japan
| | - K Nakanishi
- Department of Laboratory Medicine, Tenri Hospital, Tenri, Japan
| | - N Abe
- Department of Laboratory Medicine, Tenri Hospital, Tenri, Japan
| | - H Tanabe
- Department of Dermatology, Tenri Hospital, Tenri, Japan
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14
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Hirose C, Iihara H, Funaguchi N, Endo J, Ito F, Yanase K, Kaito D, Sasaki Y, Gomyo T, Sakai C, Ohno Y, Suzuki A. Prophylactic effect of rikkunshito, an herbal medicine, for chemotherapy-induced nausea in thoracic cancer patients receiving carboplatin-based chemotherapy. Pharmazie 2019; 74:620-624. [PMID: 31685089 DOI: 10.1691/ph.2019.9497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Rikkunshito has been shown to improve upper gastrointestinal symptoms and anorexia. The aim of this study was to evaluate whether rikkunshito improves chemotherapy-induced nausea in thoracic cancer patients receiving carboplatin (CBDCA)-based chemotherapy. A retrospective before-and-after comparison study was conducted in patients with thoracic cancer receiving the first cycle of CBDCA-based chemotherapy. Among 61 eligible patients, 34 received standard antiemetic therapy with a combination of 5-hydroxytryptamine-3 receptor antagonist and dexamethasone from September 2012 and June 2013 (standard group), while the other 27 received the standard antiemetic therapy plus oral rikkunshito from July 2013 and December 2014 (rikkunshito group). The rates of no nausea showed no significant difference between the standard and rikkunshito group (Overall phase: 64.7 % for standard group vs 74.1 % for rikkunshito group, p = 0.579). Subgroup analysis indicated that, in female patients, the rates of no nausea in rikkunshito groups was significantly higher than in standard group (overall phase: 44.4 % vs 100 %, p = 0.034). Rikkunshito did not demonstrate an additional prophylactic effect on standard antiemetic therapy for nausea in patients with thoracic cancer receiving CBDCA-based chemotherapy, but showed a prophylactic effect of nausea in female patients.
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15
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Tokunaga A, Sugiyama D, Maeda Y, Warner AB, Panageas KS, Ito S, Togashi Y, Sakai C, Wolchok JD, Nishikawa H. Selective inhibition of low-affinity memory CD8 + T cells by corticosteroids. J Exp Med 2019; 216:2701-2713. [PMID: 31537643 PMCID: PMC6888983 DOI: 10.1084/jem.20190738] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/12/2019] [Accepted: 09/03/2019] [Indexed: 12/17/2022] Open
Abstract
Corticosteroids inhibit antitumor immune responses of immune checkpoint blockade in a dose- and timing-dependent manner. Memory CD8+ T cells with low TCR affinity are selectively suppressed by corticosteroids, necessitating careful and thoughtful corticosteroid use. Patients treated with immune checkpoint blockade (ICB) sometimes experience immune-related adverse events (irAEs), requiring immuno-suppressive drugs such as corticosteroids despite the possibility that immunosuppression may impair the antitumor effects of ICB. Here, we address the dilemma of using corticosteroids for the treatment of irAEs induced by ICB. ICB augments neoantigen-specific CD8+ T cell responses, resulting in tumor regression. In our model, simultaneous, but not late, administration of corticosteroids impaired antitumor responses with reduction of CD8+ T cell proliferation. Secondary challenge using tumors with/without the neoantigen showed selective progression in tumors lacking the neoantigen when corticosteroids were administered. Corticosteroids decreased low- but not high-affinity memory T cells by suppressing fatty acid metabolism essential for memory T cells. In a small cohort of human melanoma patients, overall survival was shorter after treatment with CTLA-4 blockade in patients who received early corticosteroids or had low tumor mutation burden. Together, low-affinity memory T cells are dominantly suppressed by corticosteroids, necessitating careful and thoughtful corticosteroid use.
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Affiliation(s)
- Akihiro Tokunaga
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan.,Oncology Research and Development Unit, Kyowa Kirin Co., Ltd., Shizuoka, Japan
| | - Daisuke Sugiyama
- Department of Immunology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuka Maeda
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Allison Betof Warner
- Parker Institute for Cancer Immunotherapy, Swim Across America-Ludwig Collaborative Lab, Memorial Sloan-Kettering Cancer Center, New York, NY.,Weill Cornell Medical College, New York, NY
| | - Katherine S Panageas
- Departments of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Sachiko Ito
- Department of Immunology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yosuke Togashi
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Chika Sakai
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Jedd D Wolchok
- Parker Institute for Cancer Immunotherapy, Swim Across America-Ludwig Collaborative Lab, Memorial Sloan-Kettering Cancer Center, New York, NY .,Weill Cornell Medical College, New York, NY
| | - Hiroyoshi Nishikawa
- Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan .,Department of Immunology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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16
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Yamashita S, Iguchi K, Noguchi Y, Sakai C, Yokoyama S, Ino Y, Hayashi H, Teramachi H, Sako M, Sugiyama T. Color change in Perlodel ® tablets induced by LED lighting - photolysis of bromocriptine mesylate. Pharmazie 2019; 74:286-289. [PMID: 31109398 DOI: 10.1691/ph.2019.8109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Various types of fluorescent lights are found in the dispensing rooms of medical facilities, such as hospitals and pharmacies, in Japan. However, to reduce electric power consumption, it was necessary to evaluate the substitution of fluorescent lighting with light emitting diode (LED) lighting, which has become widespread in recent years. We subjectively evaluated several types of medicines stored under various light sources and found that different color changes were induced in tablets. In this study, we focused on Perlodel ® tablets, containing 2.5 mg bromocriptine mesylate, as an example for the objective evaluation of the differences in the color change of tablets when stored under LED lighting and fluorescent lighting. High-performance liquid chromatography (HPLC) analysis of part of the tablet surface area revealed a change from white to light brown or dark brown after 28 days of irradiation, with a residual concentration of bromocriptine mesylate of 85.5 % under fluorescent lighting, 85.6 % under daylight-color LED lighting, 90.3 % under bulb-color LED lighting, and 99.2 % in the dark. In addition, the ultraviolet (UV)-visible spectral study of the absorbance of a photo-product at 400-550 nm indicated that the color change of the Perlodel® 2.5 mg tablet was caused by photochemical degradation of bromocriptine mesylate. Thus, this analysis of the photochemical changes in drugs stored under different light sources demonstrated the potency of LED lights. Through the objective evaluation of the color change, the cause of the color change was determined; this will allow us to develop a strategy that minimizes possible disadvantages to patients, such as a decrease in treatment efficacy owing to decomposition of the main component or adverse caused by decomposed matter.
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17
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Miyazaki Y, Inaoka DK, Shiba T, Saimoto H, Sakura T, Amalia E, Kido Y, Sakai C, Nakamura M, Moore AL, Harada S, Kita K. Selective Cytotoxicity of Dihydroorotate Dehydrogenase Inhibitors to Human Cancer Cells Under Hypoxia and Nutrient-Deprived Conditions. Front Pharmacol 2018; 9:997. [PMID: 30233375 PMCID: PMC6131557 DOI: 10.3389/fphar.2018.00997] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [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: 03/05/2018] [Accepted: 08/13/2018] [Indexed: 12/15/2022] Open
Abstract
Human dihydroorotate dehydrogenase (HsDHODH) is a key enzyme of pyrimidine de novo biosynthesis pathway. It is located on the mitochondrial inner membrane and contributes to the respiratory chain by shuttling electrons to the ubiquinone pool. We have discovered ascofuranone (1), a natural compound produced by Acremonium sclerotigenum, and its derivatives are a potent class of HsDHODH inhibitors. We conducted a structure–activity relationship study and have identified functional groups of 1 that are essential for the inhibition of HsDHODH enzymatic activity. Furthermore, the binding mode of 1 and its derivatives to HsDHODH was demonstrated by co-crystallographic analysis and we show that these inhibitors bind at the ubiquinone binding site. In addition, the cytotoxicities of 1 and its potent derivatives 7, 8, and 9 were studied using human cultured cancer cells. Interestingly, they showed selective and strong cytotoxicity to cancer cells cultured under microenvironment (hypoxia and nutrient-deprived) conditions. The selectivity ratio of 8 under this microenvironment show the most potent inhibition which was over 1000-fold higher compared to that under normal culture condition. Our studies suggest that under microenvironment conditions, cancer cells heavily depend on the pyrimidine de novo biosynthesis pathway. We also provide the first evidence that 1 and its derivatives are potential lead candidates for drug development which target the HsDHODH of cancer cells living under a tumor microenvironment.
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Affiliation(s)
- Yukiko Miyazaki
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan.,Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Daniel K Inaoka
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan.,Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Host-Defense Biochemistry, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Tomoo Shiba
- Department of Applied Biology, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto, Japan
| | - Hiroyuki Saimoto
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Tottori, Japan
| | - Takaya Sakura
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Eri Amalia
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yasutoshi Kido
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan
| | - Chika Sakai
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mari Nakamura
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Anthony L Moore
- Biochemistry and Medicine, School of Life Sciences, University of Sussex, Brighton, United Kingdom
| | - Shigeharu Harada
- Department of Applied Biology, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto, Japan
| | - Kiyoshi Kita
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki, Japan.,Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Host-Defense Biochemistry, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
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18
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Ino Y, Tachi T, Ueno A, Otsubo M, Katsuno H, Noguchi Y, Sakai C, Iguchi K, Kawakami C, Fujisaki K, Teramachi H. Clinic-level factors associated with collaboration with community pharmacies in Japan. Pharmazie 2018; 73:545-552. [PMID: 30223940 DOI: 10.1691/ph.2018.8542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The aim of this study was to clarify the clinic-level factors related to experiences of and attitudes toward collaboration with community pharmacies. We conducted a postal questionnaire survey of all clinics in Gifu, Japan, assessing the experiences and attitudes of representative clinical staff regarding the following activities in collaboration with community pharmacists: regional care meetings/service adjustment meetings, case study conferences, joint workshops/continuing education conferences, community services, information sharing through medical cooperation networks, and accompanying community pharmacists during home care. The factors significantly related to experiences of joint workshops/continuing education conferences included home care visits (odds ratio [OR] 2.39) and a 100 % out-of-hospital prescription ratio (OR 4.80). In contrast, only home care visits were significantly associated with consideration of information sharing through medical cooperation networks and accompanying community pharmacists during home care (OR 2.06 and 11.91, respectively). Finally, the factors significantly associated with considering implementing case study conferences and joint workshops/continuing education conferences included home care visits (OR 4.64 and 2.98, respectively) and a 100% out-of-hospital prescription ratio (OR 4.64 and 6.38). Overall, having more opportunities to communicate with community pharmacists and other healthcare professionals appeared to facilitate clinics' consideration of collaboration with community pharmacies, along with actual experiences.
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Ishiyama A, Muramatsu K, Uchino S, Sakai C, Matsushima Y, Makioka N, Ogata T, Suzuki E, Komaki H, Sasaki M, Mimaki M, Goto YI, Nishino I. NDUFAF3
variants that disrupt mitochondrial complex I assembly may associate with cavitating leukoencephalopathy. Clin Genet 2018; 93:1103-1106. [DOI: 10.1111/cge.13215] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 01/29/2023]
Affiliation(s)
- A. Ishiyama
- Department of Child Neurology; National Center of Neurology and Psychiatry (NCNP), National Center Hospital; Tokyo Japan
- Department of Neuromuscular Research; National Institute of Neuroscience, NCNP; Tokyo Japan
- Department of Pharmacology, Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi; Yamanashi Japan
| | - K. Muramatsu
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
- Department of Pediatrics; Jichi Medical University; Tochigi Japan
| | - S. Uchino
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
- Department of Pediatrics, Faculty of Medicine; Teikyo University; Tokyo Japan
| | - C. Sakai
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
| | - Y. Matsushima
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
| | - N. Makioka
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
| | - T. Ogata
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
| | - E. Suzuki
- Department of Pediatrics; Gunma University Graduate School of Medicine; Gunma Japan
| | - H. Komaki
- Department of Child Neurology; National Center of Neurology and Psychiatry (NCNP), National Center Hospital; Tokyo Japan
| | - M. Sasaki
- Department of Child Neurology; National Center of Neurology and Psychiatry (NCNP), National Center Hospital; Tokyo Japan
| | - M. Mimaki
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
- Department of Pediatrics, Faculty of Medicine; Teikyo University; Tokyo Japan
| | - Y.-I. Goto
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP; Tokyo Japan
| | - I. Nishino
- Department of Neuromuscular Research; National Institute of Neuroscience, NCNP; Tokyo Japan
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20
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Kuriyama T, Sakai N, Beppu M, Sakai C, Imamura H, Masago K, Katakami N, Isoda H. Quantitative Analysis of Conebeam CT for Delineating Stents in Stent-Assisted Coil Embolization. AJNR Am J Neuroradiol 2018; 39:488-493. [PMID: 29419404 DOI: 10.3174/ajnr.a5533] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 11/13/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Innovative techniques and device-related advances have improved the outcomes of neuroendovascular treatment. 3D imaging has previously used 2 × 2 binning, but 1 × 1 binning has recently been made available. The aim of this study was to evaluate the quantitative ability of conebeam CT for stent delineation and to investigate its effectiveness in the clinical environment. MATERIALS AND METHODS Four acquisition groups of 3D MIP images acquired using conebeam CT with varying conditions (acquisition time, 10 or 20 seconds and binning, 1 × 1 or 2 × 2) were compared. Two methods of analysis were performed, a phantom study and an analysis of 28 randomly selected patients. The phantom study assessed the contrast-to-noise ratio and full width at half maximum values in conebeam CT images of intracranial stent struts. In the clinical subjects, we assessed contrast-to-noise ratio, full width at half maximum, and dose-area product. RESULTS In the phantom study, the contrast-to-noise ratio was not considerably different between 10- and 20-second acquisition times at equivalent binning settings. Additionally, the contrast-to-noise ratio at equivalent acquisition times did not differ considerably by binning setting. For the full width at half maximum results, equivalent acquisition times differed significantly by binning setting. In the clinical analyses, the 10-second/1 × 1 group (versus 20 second/2 × 2) showed a higher contrast-to-noise ratio (P < .05) and a dose-area product reduced by approximately 70% (P < .05), but the difference in full width at half maximum was not significant (P = .20). CONCLUSIONS For stent-assisted coil embolization, quantitative assessment of conebeam CT showed that 10 second/1 × 1 was equivalent to 20 second/2 × 2 for imaging deployed intracranial stents. Furthermore, the 10-second/1 × 1 settings resulted in a much smaller DAP.
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Affiliation(s)
- T Kuriyama
- From the Department of Radiological and Medical Laboratory Sciences (T.K., H. Isoda), Nagoya University Graduate School of Medicine, Nagoya, Japan .,Divisions of Radiological Technology (T.K.)
| | - N Sakai
- Neuroendovascular Therapy (N.S., C.S.).,Division of Neurosurgery (N.S., M.B., H. Imamura), Kobe City Medical Center General Hospital, Kobe, Japan
| | - M Beppu
- Division of Neurosurgery (N.S., M.B., H. Imamura), Kobe City Medical Center General Hospital, Kobe, Japan
| | - C Sakai
- Neuroendovascular Therapy (N.S., C.S.)
| | - H Imamura
- Division of Neurosurgery (N.S., M.B., H. Imamura), Kobe City Medical Center General Hospital, Kobe, Japan
| | - K Masago
- Department of Pathology and Molecular Diagnostics (K.M.), Aichi Cancer Center, Nagoya, Japan
| | - N Katakami
- Integrated Oncology (N.K.), Institute of Biomedical Research and Innovation, Kobe, Japan
| | - H Isoda
- From the Department of Radiological and Medical Laboratory Sciences (T.K., H. Isoda), Nagoya University Graduate School of Medicine, Nagoya, Japan.,Brain & Mind Research Center (H. Isoda), Nagoya University, Nagoya, Japan
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21
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Sakai C, Nishikawa H. [Immunosuppressive Environment in Tumors]. Gan To Kagaku Ryoho 2018; 45:222-226. [PMID: 29483409] [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: 06/08/2023]
Abstract
Tumor cells establish a unique circumstance called tumor microenvironment(TME)suitable for tumor development and progression. One ofthe most important advantages ofTME for tumor cells is immunosuppressive environment such as higher presence ofregulatory T(Treg)cells, which play a central role for establishment and maintenance of immunological selftolerance and homeostasis. CTLA-4 expressed by Treg cells prevents the maturation ofAPCs resulting in suppression ofT -cell activation. Inhibitory cytokines and adenosine produced by Treg cells are also responsible for their suppressive functions. Indeed, high infiltration of Treg cells has been observed in many tumor tissues and is associated with poor clinical outcomes. Treg cells are recruited into tumors via chemokines secreted by tumor cells and immune cells, and further expand in TME. It has recently been shown that the metabolism oftumor cells and infiltrated immune cells in TME is also important component for tumor immunosuppressive environment. Effector T(Teff)cells rely on glycolysis for their proliferation and effector function, whereas Treg cells predominantly employ oxidative phosphorylation for suppressive function. In TME, tumor cells uptake and utilize large amounts ofglucose and glutamine and the concentration ofthose nutrients is much lower than that in normal tissues or peripheral blood. Under low glucose conditions, Teff cells fail to drive glycolysis for their survival and effector function. While the shortage of glutamine causes inhibition of Teff-cell proliferation and cytokines production, it is favorable for Treg cells. High consumption of glucose through glycolysis by tumor cells results in lactate accumulation in TME, resulting in suppression to proliferation and function of Teff cells. By contrast, high lactate level increases Treg cells with suppressive function. Furthermore, adenosine generated by tumor cells and Treg cells is known to impair the function of Teff cells. Together, various factors in TME including the metabolism of tumor cells and infiltrated immune cells allow Treg cells to infiltrate, proliferate and exhibit strong suppressive function, leading to dysfunction of Teff cells.
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Affiliation(s)
- Chika Sakai
- Division of Cancer Immunology, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center
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22
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Ishiyama A, Sakai C, Matsushima Y, Noguchi S, Mitsuhashi S, Endo Y, Hayashi YK, Saito Y, Nakagawa E, Komaki H, Sugai K, Sasaki M, Sato N, Nonaka I, Goto YI, Nishino I. IBA57 mutations abrogate iron-sulfur cluster assembly leading to cavitating leukoencephalopathy. Neurol Genet 2017; 3:e184. [PMID: 28913435 PMCID: PMC5591399 DOI: 10.1212/nxg.0000000000000184] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 07/27/2017] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To determine the molecular factors contributing to progressive cavitating leukoencephalopathy (PCL) to help resolve the underlying genotype-phenotype associations in the mitochondrial iron-sulfur cluster (ISC) assembly system. METHODS The subjects were 3 patients from 2 families who showed no inconsistencies in either clinical or brain MRI findings as PCL. We used exome sequencing, immunoblotting, and enzyme activity assays to establish a molecular diagnosis and determine the roles of ISC-associated factors in PCL. RESULTS We performed genetic analyses on these 3 patients and identified compound heterozygosity for the IBA57 gene, which encodes the mitochondrial iron-sulfur protein assembly factor. Protein expression analysis revealed substantial decreases in IBA57 protein expression in myoblasts and fibroblasts. Immunoblotting revealed substantially reduced expression of SDHB, a subunit of complex II, and lipoic acid synthetase (LIAS). Levels of pyruvate dehydrogenase complex-E2 and α-ketoglutarate dehydrogenase-E2, which use lipoic acid as a cofactor, were also reduced. In activity staining, SDH activity was clearly reduced, but it was ameliorated in mitochondrial fractions from rescued myoblasts. In addition, NFU1 protein expression was also decreased, which is required for the assembly of a subset of iron-sulfur proteins to SDH and LIAS in the mitochondrial ISC assembly system. CONCLUSIONS Defects in IBA57 essentially regulate NFU1 expression, and aberrant NFU1 ultimately affects SDH activity and LIAS expression in the ISC biogenesis pathway. This study provides new insights into the role of the iron-sulfur protein assembly system in disorders related to mitochondrial energy metabolism associated with leukoencephalopathy with cavities.
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Affiliation(s)
- Akihiko Ishiyama
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Chika Sakai
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Yuichi Matsushima
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Satoru Noguchi
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Satomi Mitsuhashi
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Yukari Endo
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Yukiko K Hayashi
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Yoshiaki Saito
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Eiji Nakagawa
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Hirofumi Komaki
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Kenji Sugai
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Masayuki Sasaki
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Noriko Sato
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Ikuya Nonaka
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Yu-Ichi Goto
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
| | - Ichizo Nishino
- Department of Child Neurology (A.I., Y.S., E.N., H.K, K.S., M.S.), National Center Hospital; Department of Neuromuscular Research (A.I., S.N., S.M., Y.E., Y.K.H., I. Nonaka, I. Nishino.), National Institute of Neuroscience; Department of Mental Retardation and Birth Defect Research (C.S., Y.M., Y.-i.G.), National Institute of Neuroscience; Department of Radiology (N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Tokyo; Department of Pharmacology (A.I.), Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi; and Department of Pathophysiology (Y.K.H), Tokyo Medical University, Japan
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Bustamante-Lopez L, Sulbaran M, Sakai C, de Moura E, Bustamante-Perez L, Nahas C, Nahas S, Cecconello I, Sakai P. A novel technique for correction of total rectal prolapse: Endoscopic-assisted percutaneous rectopexy with the aid of the EndoLifter. Revista de Gastroenterología de México (English Edition) 2016. [DOI: 10.1016/j.rgmxen.2016.10.001] [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: 11/27/2022] Open
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Shimizu K, Imamura H, Mineharu Y, Adachi H, Sakai C, Sakai N. Endovascular Treatment of Unruptured Paraclinoid Aneurysms: Single-Center Experience with 400 Cases and Literature Review. AJNR Am J Neuroradiol 2015; 37:679-85. [PMID: 26514613 DOI: 10.3174/ajnr.a4577] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 08/21/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND PURPOSE Paraclinoid aneurysms have been increasingly treated endovascularly. The natural history of these aneurysms has gradually been elucidated. The purpose of this study was to assess the safety and efficacy of endovascular treatment for these aneurysms. MATERIALS AND METHODS We performed a retrospective review of 377 patients with 400 paraclinoid aneurysms treated between January 2006 and December 2012. Their clinical records, endovascular reports, and radiologic and clinical outcomes were analyzed. Because aneurysms ≥7 mm are at higher risk of rupture, we classified aneurysms as small (<7 mm) or large (≥7 mm). RESULTS Overall, 115 of the 400 aneurysms (28.8%) were large (≥7 mm). Thromboembolic complications were found significantly more often with large aneurysms than with small ones (7.4% vs 1.0%, P = .001). Hemorrhagic complications were found only with small aneurysms (0.7%). The 6-month morbidity rates were similar for small (1.0%) and large (0.8%) aneurysms. Immediate angiographic outcomes were similar (P = .37), whereas recurrences and retreatment occurred more frequently with large aneurysms (P = .001 and P = .007, respectively). Multivariate analysis showed that aneurysm size was the only independent predictor for recurrence (P = .005). Most recurrences (81%) were detected by scheduled angiography at 6 months. CONCLUSIONS Aneurysm size influenced the type of complication (thromboembolic or hemorrhagic) and the recurrence rate. Given the approximately 1% annual rupture rate for aneurysms ≥7 mm, analysis of our data supports the rationale of using prophylactic endovascular treatment for unruptured paraclinoid aneurysms ≥7 mm.
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Affiliation(s)
- K Shimizu
- From the Department of Neurosurgery (K.S., H.I., H.A., N.S.), Kobe City Medical Center General Hospital, Kobe, Japan
| | - H Imamura
- From the Department of Neurosurgery (K.S., H.I., H.A., N.S.), Kobe City Medical Center General Hospital, Kobe, Japan
| | - Y Mineharu
- Department of Neurosurgery (Y.M.), Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - H Adachi
- From the Department of Neurosurgery (K.S., H.I., H.A., N.S.), Kobe City Medical Center General Hospital, Kobe, Japan
| | - C Sakai
- Division of Neuroendovascular Therapy (C.S., N.S.), Institute of Biomedical Research and Innovation, Kobe, Japan
| | - N Sakai
- From the Department of Neurosurgery (K.S., H.I., H.A., N.S.), Kobe City Medical Center General Hospital, Kobe, Japan Division of Neuroendovascular Therapy (C.S., N.S.), Institute of Biomedical Research and Innovation, Kobe, Japan
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Sakai C, Yamaguchi S, Sasaki M, Miyamoto Y, Matsushima Y, Goto YI. ECHS1 mutations cause combined respiratory chain deficiency resulting in Leigh syndrome. Hum Mutat 2015; 36:232-9. [PMID: 25393721 DOI: 10.1002/humu.22730] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [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: 09/04/2014] [Accepted: 11/05/2014] [Indexed: 12/31/2022]
Abstract
The human ECHS1 gene encodes the short-chain enoyl coenzyme A hydratase, the enzyme that catalyzes the second step of β-oxidation of fatty acids in the mitochondrial matrix. We report on a boy with ECHS1 deficiency who was diagnosed with Leigh syndrome at 21 months of age. The patient presented with hypotonia, metabolic acidosis, and developmental delay. A combined respiratory chain deficiency was also observed. Targeted exome sequencing of 776 mitochondria-associated genes encoded by nuclear DNA identified compound heterozygous mutations in ECHS1. ECHS1 protein expression was severely depleted in the patient's skeletal muscle and patient-derived myoblasts; a marked decrease in enzyme activity was also evident in patient-derived myoblasts. Immortalized patient-derived myoblasts that expressed exogenous wild-type ECHS1 exhibited the recovery of the ECHS1 activity, indicating that the gene defect was pathogenic. Mitochondrial respiratory complex activity was also mostly restored in these cells, suggesting that there was an unidentified link between deficiency of ECHS1 and respiratory chain. Here, we describe the patient with ECHS1 deficiency; these findings will advance our understanding not only the pathology of mitochondrial fatty acid β-oxidation disorders, but also the regulation of mitochondrial metabolism.
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Affiliation(s)
- Chika Sakai
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
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Ishiyama A, Sakai C, Endo Y, Mitsuhashi S, Noguchi S, Matsushima Y, Hayashi Y, Komaki H, Sugai K, Sasaki M, Nonaka I, Goto Y, Nishino I. Mutations in iron–sulfur cluster assembly gene IBA57 cause progressive cavitating leukoencephalopathy. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.075] [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]
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Matsumura K, Sakai C, Kawakami S, Yamashita F, Hashida M. Inhibition of cancer cell growth by GRP78 siRNA lipoplex via activation of unfolded protein response. Biol Pharm Bull 2015; 37:648-53. [PMID: 24694610 DOI: 10.1248/bpb.b13-00930] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Proteasome inhibitors are a novel class of molecular-targeted anti-cancer drugs that suppress the degradation of malfolded proteins, trigger endoplasmic reticulum (ER) stress, and activate apoptosis signals. Glucose-regulated protein 78 (GRP78), a major ER chaperone, is one of the most important molecules for transduction of unfolded protein response (UPR) signals. In accordance with past findings that expression of GRP78 is elevated in cancer cells and helps to resist stress-induced apoptosis, GRP78 knockdown could be effective in anticancer therapy. We tested this hypothesis and found that transfection of small interfering RNA (siRNA) targeting GRP78 inhibited the growth of RENCA renal carcinoma cells, in association with elevated gene expression of UPR downstream signaling molecules (CHOP, EDEM1, and ERdj4 mRNA). In addition, the combinatorial effect of GRP78 siRNA with ER stress inducers (tunicamycin, MG132, and 2-deoxyglucose) on survival was measured. Combination of GRP78 siRNA and the ER stress inducers more extensively reduced cell viability than combination with scrambled siRNA. Besides RENCA, B16BL6 melanoma cells were also shown to be sensitive to GRP78 siRNA. These results suggest that GRP78 knockdown might be an effective strategy for cancer therapy targeting UPR-induced apoptosis.
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Affiliation(s)
- Kazushi Matsumura
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University
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Sakai C, Tomitsuka E, Miyagishi M, Harada S, Kita K. Type II Fp of human mitochondrial respiratory complex II and its role in adaptation to hypoxia and nutrition-deprived conditions. Mitochondrion 2013; 13:602-9. [PMID: 24008124 DOI: 10.1016/j.mito.2013.08.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 08/08/2013] [Accepted: 08/26/2013] [Indexed: 10/26/2022]
Abstract
The flavoprotein (Fp) subunit of human mitochondrial succinate-ubiquinone reductase (SQR, complex II) has isoforms (type I, type II). Type II Fp is predominantly expressed in some cancer and fetal tissues and those tissues are often exposed to ischemia. The present study shows that complex II with type II Fp has lower optimal pH than complex II with type I Fp, and type II Fp mRNA expression was induced by ischemia. The result suggests complex II with type II Fp may function in cells with low mitochondrial matrix pH caused by ischemia and its function is related to cellular adaptation to ischemia.
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Affiliation(s)
- Chika Sakai
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
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Sakai C, Takeda SN, Daimon H. System to measure accurate temperature dependence of electric conductivity down to 20 K in ultrahigh vacuum. Rev Sci Instrum 2013; 84:075103. [PMID: 23902102 DOI: 10.1063/1.4812336] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have developed the new in situ electrical-conductivity measurement system which can be operated in ultrahigh vacuum (UHV) with accurate temperature measurement down to 20 K. This system is mainly composed of a new sample-holder fixing mechanism, a new movable conductivity-measurement mechanism, a cryostat, and two receptors for sample- and four-probe holders. Sample-holder is pushed strongly against the receptor, which is connected to a cryostat, by using this new sample-holder fixing mechanism to obtain high thermal conductivity. Test pieces on the sample-holders have been cooled down to about 20 K using this fixing mechanism, although they were cooled down to only about 60 K without this mechanism. Four probes are able to be touched to a sample surface using this new movable conductivity-measurement mechanism for measuring electrical conductivity after making film on substrates or obtaining clean surfaces by cleavage, flashing, and so on. Accurate temperature measurement is possible since the sample can be transferred with a thermocouple and∕or diode being attached directly to the sample. A single crystal of Bi-based copper oxide high-Tc superconductor (HTSC) was cleaved in UHV to obtain clean surface, and its superconducting critical temperature has been successfully measured in situ. The importance of in situ measurement of resistance in UHV was demonstrated for this HTSC before and after cesium (Cs) adsorption on its surface. The Tc onset increase and the Tc offset decrease by Cs adsorption were observed.
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Affiliation(s)
- C Sakai
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0101, Japan.
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Shimazaki H, Takiyama Y, Ishiura H, Sakai C, Matsushima Y, Hatakeyama H, Honda J, Sakoe K, Naoi T, Namekawa M, Fukuda Y, Takahashi Y, Goto J, Tsuji S, Goto YI, Nakano I. A homozygous mutation of C12orf65 causes spastic paraplegia with optic atrophy and neuropathy (SPG55). J Med Genet 2013. [PMID: 23188110 DOI: 10.1136/jmedgenet-2012-101212] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Autosomal recessive hereditary spastic paraplegias (AR-HSP) constitute a heterogeneous group of neurodegenerative diseases involving pyramidal tracts dysfunction. The genes responsible for many types of AR-HSPs remain unknown. We attempted to identify the gene responsible for AR-HSP with optic atrophy and neuropathy. METHODS The present study involved two patients in a consanguineous Japanese family. Neurologic examination and DNA analysis were performed for both patients, and a skin biopsy for one. We performed genome-wide linkage analysis involving single nucleotide polymorphism arrays, copy-number variation analysis, and exome sequencing. To clarify the mitochondrial functional alteration resulting from the identified mutation, we performed immunoblot analysis, mitochondrial protein synthesis assaying, blue native polyacrylamide gel electrophoresis (BN-PAGE) analysis, and respiratory enzyme activity assaying of cultured fibroblasts of the patient and a control. RESULTS We identified a homozygous nonsense mutation (c.394C>T, p.R132X) in C12orf65 in the two patients in this family. This C12orf65 mutation was not found in 74 Japanese AR-HSP index patients without any mutations in previously known HSP genes. This mutation resulted in marked reduction of mitochondrial protein synthesis, followed by functional and structural defects in respiratory complexes I and IV. CONCLUSIONS This novel nonsense mutation in C12orf65 could cause AR-HSP with optic atrophy and neuropathy, resulting in a premature stop codon. The truncated C12orf65 protein must lead to a defect in mitochondrial protein synthesis and a reduction in the respiratory complex enzyme activity. Thus, dysfunction of mitochondrial translation could be one of the pathogenic mechanisms underlying HSPs.
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Affiliation(s)
- Haruo Shimazaki
- Division of Neurology, Department of Internal Medicine, Jichi Medical University, Tochigi, Japan
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Miyake N, Yano S, Sakai C, Hatakeyama H, Matsushima Y, Shiina M, Watanabe Y, Bartley J, Abdenur JE, Wang RY, Chang R, Tsurusaki Y, Doi H, Nakashima M, Saitsu H, Ogata K, Goto YI, Matsumoto N. Mitochondrial Complex III Deficiency Caused by a HomozygousUQCRC2Mutation Presenting with Neonatal-Onset Recurrent Metabolic Decompensation. Hum Mutat 2013; 34:446-52. [DOI: 10.1002/humu.22257] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 11/07/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Noriko Miyake
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama; Japan
| | - Shoji Yano
- Genetics Division, Department of Pediatrics, LAC + USC Medical Center, Keck School of Medicine; University of Southern California; Los Angeles; California
| | - Chika Sakai
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP, Kodaira; Tokyo; Japan
| | - Hideyuki Hatakeyama
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP, Kodaira; Tokyo; Japan
| | - Yuichi Matsushima
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP, Kodaira; Tokyo; Japan
| | - Masaaki Shiina
- Department of Biochemistry; Yokohama City University Graduate School of Medicine; Yokohama; Japan
| | - Yoriko Watanabe
- Department of Pediatrics and Child Health; Kurume University School of Medicine; Kurume; Japan
| | - James Bartley
- Division of Medical Genetics, Department of Pediatrics; Children's Hospital Los Angeles; Los Angeles; California
| | - Jose E. Abdenur
- Division of Metabolic Disorders; CHOC Children's; Orange; California
| | - Raymond Y. Wang
- Division of Metabolic Disorders; CHOC Children's; Orange; California
| | - Richard Chang
- Division of Metabolic Disorders; CHOC Children's; Orange; California
| | - Yoshinori Tsurusaki
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama; Japan
| | - Hiroshi Doi
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama; Japan
| | - Mitsuko Nakashima
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama; Japan
| | - Hirotomo Saitsu
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama; Japan
| | - Kazuhiro Ogata
- Department of Biochemistry; Yokohama City University Graduate School of Medicine; Yokohama; Japan
| | - Yu-ichi Goto
- Department of Mental Retardation and Birth Defect Research; National Institute of Neuroscience, NCNP, Kodaira; Tokyo; Japan
| | - Naomichi Matsumoto
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama; Japan
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Kawasaki T, Yamano M, Sakai C, Harimoto K, Miki S, Kamitani T, Sugihara H. Diagnostic performance of ultrasonic tissue characterization for subendocardial ischaemia in patients with hypertrophic cardiomyopathy. Eur Heart J Cardiovasc Imaging 2012; 14:790-6. [DOI: 10.1093/ehjci/jes285] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Yamamoto N, Sakai C, Sakai C, Bessyo K, Matsui C, Ishida H, Sakamoto R, Yanagi H, Wada T. Joints angle, moment and muscle activity during Nordic Walking compared to walking. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Sakai C, Tomitsuka E, Esumi H, Harada S, Kita K. Mitochondrial fumarate reductase as a target of chemotherapy: From parasites to cancer cells. Biochim Biophys Acta Gen Subj 2012; 1820:643-51. [DOI: 10.1016/j.bbagen.2011.12.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 11/28/2011] [Accepted: 12/17/2011] [Indexed: 10/14/2022]
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Suzumiya J, Suzuki K, Uike N, Kawano F, Takeo T, Okamura S, Sakai C, Mori M, Tamura K. Late phase II study of amrubicin in previously untreated patients with non-Hodgkin's lymphoma (NHL). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.8097] [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: 11/20/2022] Open
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Tsujimura H, Mimura N, Ise M, Sakai C, Shimada H, Nagata M, Kumagai K. Incidence of therapy-related leukemia following chemoradiotherapy for esophageal cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15663] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15663 Background: The combination of chemotherapy and concurrent radiotherapy (CRT) has recognized as a curative alternative for several stage of esophageal cancer. On the other hands, a sufficiently long survival time has increased treatment-related late toxicities. However, the frequency and the pathogenesis of secondary malignancies that is the most serious late-onset complication are still unclear. Methods: From July 2000 to March 2008, 348 patients with esophageal squamous cell carcinoma underwent CRT. All patients received chemotherapy consisting with nedaplatin (80 mg/m2, div day1) and fluorouracil (700 mg/m2, ci day 1–5) and concurrent long T field irradiation (2 Gy daily, up to 30 Gy). A hundred patients received a single course as the neoadjuvant setting. Two cycles of CRT as the definitive or palliative setting were administered in 248 patients. Median and average follow-up durations are 8 and 21 months (1 to 92), respectively. Results: Four patients, who achieved CR after CRT, developed leukemia. Case1, 60-yo-male, developed overt acute myeloid leukemia (AML) from myelodysplastic syndrome 48 months after CRT. Cytogenetic analysis showed complicated abnormalities including deletion 5q. Case2, 64-yo-male, developed AML M0 with t(9;22)(q34;q11) 44 months after CRT. Case3, 72-yo-male, developed Burkitt leukemia with t(8;14)(q24;q32) 19 months after CRT. Case4, 65-yo-male, developed myeloid crisis of chronic myelogenous leukemia with complicated abnormalities including t(9;22)(q34;q11) 48 months after CRT. Case 1 and 3 had localized disease and received single course of neoadjuvant CRT. Case 2 and 4 had advance disease and received 2 courses of CRT. All patients eventually died of leukemia. Conclusions: Since platinum and fluorouracil have shown relatively low chance of secondary neoplasm, our data demonstrates that the concurrent radiotherapy which involves massive bone marrow tissue may increase the risk of leukomogenesis. To this end, atypical cytogenetic abnormalities seen in the present cases give a new insight into the biology of therapy-related leukemia. Notably, this is the first report presenting the incidence of secondary leukemia by nedaplatin. No significant financial relationships to disclose.
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Affiliation(s)
| | | | - M. Ise
- Chiba Cancer Center, Chiba, Japan
| | - C. Sakai
- Chiba Cancer Center, Chiba, Japan
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Sakai C, Sakai N, Kuroiwa T, Ishihara H, Adachi H, Morizane A, Yano T, Kajikawa R, Yamagami H, Kobayashi J, Kondo K, Kikuchi H. Stenting for chronic total occlusion of the proximal subclavian artery. Interv Neuroradiol 2007; 13 Suppl 1:135-40. [PMID: 20566091 DOI: 10.1177/15910199070130s120] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Accepted: 01/15/2007] [Indexed: 11/16/2022] Open
Abstract
SUMMARY We report the results of 26 patients who underwent stent deployment for chronic total occlusion of proximal subclavian artery. From January 1998 to October 2005, 26 patients (18 male; mean age, 62.7 years, range 22 to 83 years), 28 lesions, underwent 29 procedures of stenting for chronic total occlusion of the proximal subclavian artery.Twenty-three patients had symptoms of claudication in their arm, no patients had subclavian steal syndrome.A brachial approach was used in 21 procedures, a femoral approach was used in five procedures, and combined femoral-brachial approach was required in three procedures. Primary stent deployment was success in 24 lesions (85.7%), and secondary procedure was success in one patient, totally 25 lesions (89.3%) were successfully treated by stenting. Procedure related complication occurred in four cases, including stent migration without symptoms in two procedures, hemianopsia on next day in a case, and TIA on unclear reason in one case. Permanent morbidity rate is 3.4% in procedure. Target lesion re-treatment required in three lesions, caused by subacute thrombosis, in-stent-restenosis, and dissection of the vessel by stent edge. The cases of subacute thrombosis and in-stent-restenosis were treated by re-PTA, and the case of dissection was treated by additional stenting. Secondary patency was 100%. We conclude that stenting for chronic total occlusion of subclavian arteries appears feasible and safe.
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Affiliation(s)
- C Sakai
- Division of Neuroendovascular Therapy, Institute of Biomedical Research and Innovation, Kobe, Japan -
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Sakai C, Konno F, Nakano O, Iwai T, Yokota T, Lee J, Nishida-Umehara C, Kuroiwa A, Matsuda Y, Yamashita M. Chromosome elimination in the interspecific hybrid medaka between Oryzias latipes and O. hubbsi. Chromosome Res 2007; 15:697-709. [PMID: 17603754 DOI: 10.1007/s10577-007-1155-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2006] [Revised: 04/22/2007] [Accepted: 04/22/2007] [Indexed: 11/28/2022]
Abstract
An interspecific hybrid medaka (rice fish) between Oryzias latipes and O. hubbsi is embryonically lethal. To gain an insight into the cellular and molecular mechanisms that cause the abnormalities occurring in the hybrid medaka, we investigated the behavior of chromosomes and the expression patterns of proteins responsible for the chromosome behavior. The number of chromosomes in the hybrid embryos gradually decreased to nearly half, since abnormal cell division with lagging chromosomes at anaphase eliminated the chromosomes from the cells. The chromosome lagging occurred at the first cleavage and continued throughout embryogenesis even after the midblastula transition. Fluorescent in-situ hybridization analyses revealed that the chromosomes derived from O. hubbsi are preferentially eliminated in both O. latipes-hubbsi and O. hubbsi-latipes embryos. Whole-mount immunocytochemical analyses using antibodies against alpha-tubulin, gamma-tubulin, inner centromere protein, Cdc20, Mad2, phospho-histone H3 and cohesin subunits (SMC1alpha, SMC3 and Rad21) showed that the expression patterns of these proteins in the hybrid embryos are similar to those in the wild-type embryos, except for phospho-histone H3. Phospho-histone H3 present on chromosomes at metaphase was lost from normally separated chromosomes at anaphase, whereas it still existed on lagging chromosomes at anaphase, indicating that the lagging chromosomes remain in the metaphase state even when the cell has proceeded to the anaphase state. On the basis of these findings, we discuss the cellular and molecular mechanisms of chromosome elimination in the hybrid medaka.
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Affiliation(s)
- C Sakai
- Laboratory of Molecular and Cellular Interactions, Faculty of Advanced Life Science, Hokkaido University, Sapporo, 060-0810, Japan
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Yano T, Sakai N, Yamagami H, Kanefuji K, Kobayashi J, Adachi H, Ueno Y, Kunieda T, Morizane A, Osaka N, Kajikawa R, Sakai C, Kikuchi H. Revascularization procedure mainly by suction thrombectomy for acute cervical carotid occlusion. Interv Neuroradiol 2007; 13 Suppl 1:174-8. [PMID: 20566098 DOI: 10.1177/15910199070130s127] [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] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Accepted: 01/15/2007] [Indexed: 11/15/2022] Open
Abstract
SUMMARY In many cases, the prognosis for acute cervical carotid artery occlusion is poor. However, a standard treatment for the acute stage is not yet established. We report here the results of eight consecutive patients (mean age 71.5 years old) in which revascularization mainly by suction thrombectomy was performed under proximal protection during the acute phase. The occlusion sites were the intracranial internal carotid artery in five patients, tandem lesions of the internal carotid origin and intracranial vessel in two patients, and the common carotid artery in one patient. In addition, the subjects who received the treatment had an extent of infarction in MRI/DWI that was 1/3 or less of the internal carotid artery territory. The mean time from the onset to treatment commencement was 7.25 hours (2-28 hours). For the endovascular treatment, a guiding catheter with a balloon was used for proximal protection of the carotid artery. Revascularization was performed mainly by suction thrombectomy, and if a stenosed lesion was observed, PTA/stenting was added. Local fibrinolysis was not performed in combination with the above procedure. The treatment results were complete recanalization in three patients and partial recanalization in three patients. However, recanalization was not achieved in two patients. No hyperfusion syndrome or hemorrhagic infarction was observed postoperatively. All four patients in whom thrombi were successfully aspirated had occlusions proximal to the ophthalmic artery branch. In three of these four patients, complete recanalization was achieved. The revascularization procedure using suction thrombectomy under proximal protection was considered effective against the acute cervical carotid occlusions, in particular, those proximal to the ophthalmic artery branch.
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Affiliation(s)
- T Yano
- Kobe City General Hospital, Stroke Center, Institute of Biomedical Research and Innovation, Cerebral Endovascular Treatment Department; Japan -
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40
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Ishihara H, Sakai N, Kuroiwa T, Sakaguchi M, Morizane A, Sakai C, Yano T, Kajikawa R, Yamagami H, Kobayashi J. Percutaneous transluminal angioplasty and stenting for chronic total occlusion of intracranial carotid artery: a case report. Interv Neuroradiol 2006; 12:263-8. [PMID: 20569581 DOI: 10.1177/159101990601200310] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Accepted: 08/15/2006] [Indexed: 11/17/2022] Open
Abstract
SUMMARY Chronic total occlusion of cerebrovascular lesions is regarded as a contraindication to revascularization. We describe a case of chronic total occlusion of intracranial internal carotid artery that iwass successfully recanalized by endovascular treatment. A 72-year-old man who presented with slight right hemiparesis was proved to have chronic total occlusion of the left intracranial internal carotid artery. Percutaneous transluminal angioplasty/stenting was achieved using reversal of flow with the Parodi Anti-Embolic System. The present case indicates that percutaneous transluminal angioplasty/stenting can be an effective therapeutic option in selected patients with chronic total occlusion of cerebrovascular lesions.
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Affiliation(s)
- H Ishihara
- Department of Neurosurgery and Neurology, Kobe City General Hospital 4-6, Minatojima-Nakamachi, Chuo-ku, Kobe, 650-0046, Japan -
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41
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Sakai C, Sakai N, Okada T, Kuroiwa T, Ishihara H, Morizane A, Yano T, Kikuchi H. Computed Tomography Angiography of Carotid Stent. Comparison of Various Self-expandable Stent in a Phantom Model. Interv Neuroradiol 2006; 12:189-92. [PMID: 20569629 DOI: 10.1177/15910199060120s133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2005] [Accepted: 12/15/2005] [Indexed: 11/15/2022] Open
Abstract
SUMMARY We evaluated Computed Tomography Angiography (CTA) of four different self-expandable stents in phantom model. Three stents ware made of nitinol and one was made of cobaltbased alloy. Each stent placed in plastic injector, filled with diluted iodinated contrast material, and placed on a plastic case filled with saline. CTA was performed on a four-detector CT scanner (detector collimation, 0.5mm: helical pitch 3.5). Axial and longitudinal reconstructions of CT imaging were compared with the instent attenuation. Three nitinol stents showed few artifact, and cobalt-based alloy stent was appeared artificial narrowing. In conclusion, CTA is useful for follow-up examination after carotid artery stenting (CAS) as a less invasive evaluation method.
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Affiliation(s)
- C Sakai
- Division of Neuroendovascular Therapy and Radiology, Institute of Biomedical Research and Innovation; Minatojima-Minamimachi, Chuo-ku, Kobe, Japan
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Suzuki R, Suzumiya J, Nakamura S, Kagami Y, Kameoka JI, Sakai C, Mukai H, Takenaka K, Yoshino T, Tsuzuki T, Sugimori H, Kawa K, Kodera Y, Oshimi K. Hematopoietic stem cell transplantation for natural killer-cell lineage neoplasms. Bone Marrow Transplant 2006; 37:425-31. [PMID: 16400344 DOI: 10.1038/sj.bmt.1705244] [Citation(s) in RCA: 170] [Impact Index Per Article: 9.4] [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: 11/09/2022]
Abstract
Neoplasms of natural killer (NK)-lineage are rare. Their prognosis is generally poor except for cases of solitary nasal NK-cell lymphoma. The NK-cell Tumor Study Group performed a survey in Japan on patients diagnosed between 1994 and 1998. Of 228 patients selected for analysis, 40 underwent HSCT (15 allografts and 25 autografts). The underlying diseases were myeloid/NK cell precursor acute leukemia (n = 4), blastic NK-cell lymphoma (n = 11), aggressive NK-cell leukemia (n = 3), and nasal-type extranodal NK-cell lymphoma (n = 22). At the time of HSCT, 22 patients were in complete remission (CR), 11 were in relapse, and seven were primary refractory. All patients received myeloablative conditioning regimens including total-body irradiation. Sixteen died of disease progression, and six of treatment-related causes. Overall, 4-year survival was 39% with a median follow-up of 50 months; this was significantly better than that of patients who did not undergo HSCT (21%, P = 0.0003). For patients transplanted in CR, the 4-year overall survival was 68%, which was significantly better than that of patients who went into CR but did not undergo HSCT (P = 0.03). These findings suggest that the HSCT is a promising treatment strategy for NK-cell lineage.
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Affiliation(s)
- R Suzuki
- Division of Molecular Medicine, Aichi Cancer Center, Kanokoden, Nagoya, Japan.
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Suzuki K, Uike N, Suzumiya J, Kawano F, Takeo T, Okamura S, Sakai C, Mori M, Tamura K. Late phase II study of amrubicin in previously untreated patients with non-Hodgkin’s lymphoma (NHL). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.6644] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- K. Suzuki
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - N. Uike
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - J. Suzumiya
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - F. Kawano
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - T. Takeo
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - S. Okamura
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - C. Sakai
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - M. Mori
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
| | - K. Tamura
- Japanese Red Cross Medcl Ctr, Tokyo, Japan; National Kyushu Cancer Ctr, Fukuoka, Japan; Fukuoka Univ Hosp, Fukuoka, Japan; National Kumamoto Medcl Ctr, Kumamoto, Japan; Yokkaichi Municipal Hosp, Yokkaichi, Japan; National Kyushu Medcl Ctr, Fukuoka, Japan; Chiba Cancer Ctr, Chiba, Japan; Tokyo Metropolitan Geriatric Medcl Ctr, Tokyo, Japan
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Kuroiwa T, Sakai N, Sakaguchi M, Adachi H, Imamura H, Sakai C, Morizane A, Ishihara H, Yano T, Nakao S, Kikuchi H. Simulation Study of Distal Balloon Protection Systems during Carotid Artery Stenting. Interv Neuroradiol 2004; 10 Suppl 2:79-84. [DOI: 10.1177/15910199040100s215] [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] [Subscribe] [Scholar Register] [Received: 09/23/2004] [Accepted: 10/01/2004] [Indexed: 11/15/2022] Open
Abstract
The purpose of our experimental study was to assess the pitfalls of distal balloon protection systems and to learn any technique tips to increase safety. Silicone carotid artery models were connected to a circulatory system to simulate arterial flow. A distal balloon protection device, PercuSurge GuardWire Plus (GWP, Medtronic Vascular) was delivered to the internal carotid artery (ICA), then was inflated to occlude ICA flow temporarily. A debris aspiration catheter (Export catheter) was delivered just proximal to the GuardWire Plus balloon coaxially, in order to introduce and diffuse particulate debris (200–500 micro meter in diameter) in the ICA stump. Then, after debris in the stump was aspirated, the GWP balloon was deflated. We recorded all the processes of our simulation experiments on a digital video and observed the movements of debris during these experiments. Exp 1) We simulated the movements of debris in the ICA stump when the GWP balloon was gradually deflated to produce a crevice between the balloon and vessel wall, simulating accidental movement of the GWP balloon during the procedure. Exp 2) In order to assess the optimal placement of the tip of aspiration catheter, the debris in the ICA stump was aspirated from three different sites (from just below the GuardWire balloon, from 2 cm below it, and from 5 cm below it). Exp 1) When the crevice appeared between GuardWire balloon and silicone tube, simulated debris began to concentrate just below the balloon. Then, some debris migrated distally from the crevice, and another part crowded in the crevice so that was impossible to aspirate and migrated in the end. Exp. 2) Debris aspiration was most effective from immediately below the GuardWire balloon, and the aspiration ability declined as the distance between the balloon and aspiration catheter became longer. According to our simulation studies, when the GWP balloon was moved accidentally during CAS procedures, or when the aspiration catheter was not delivered all the way to the GuardWire Plus balloon, distal embolization might still occur, even under protection.
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Affiliation(s)
| | - N. Sakai
- Department of Neurosurgey, Kobe City General Hospital
| | - M. Sakaguchi
- Department of Neurology, Kobe City General Hospital
| | - H. Adachi
- Department of Neurosurgey, Kobe City General Hospital
| | - H. Imamura
- Department of Neurosurgey, Kobe City General Hospital
| | | | - A. Morizane
- Department of Neurosurgey, Kobe City General Hospital
| | - H. Ishihara
- Department of Neurosurgey, Kobe City General Hospital
| | - T. Yano
- Department of Neurosurgey, Kobe City General Hospital
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Sakai C, Satoh Y, Ohkusu K, Kumagai K, Ishii A. [Outbreak of methicillin-resistant Staphylococcus aureus (MRSA) infection or colonization among patients with neoplastic disease: a clinico-epidemiological study of 11 cases]. Kansenshogaku Zasshi 2001; 75:940-5. [PMID: 11766376 DOI: 10.11150/kansenshogakuzasshi1970.75.940] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
MRSA infection or colonization developed in eleven patients with neoplastic disease including malignant lymphoma (5 cases), soft tissue sarcoma (2 cases), acute myeloblastic leukemia (one), myelodysplastic syndrome (one), multiple myeloma (one), and mesothelioma (one) at our ward from October to December 1999. The infections were pneumonia (six cases), enteritis (three), bacteremia (one), and wound infection (one). Ten of 11 cases received antimicrobial agent (s) during one month before isolation of MRSA, suggesting selection of MRSA. Five cases improved and survived, but six cases died of infection. At the isolation of MRSA, the neutrophil count (NC) of the alive cases was 1, 500/microliter or more but the NC of five cases who died was less than 1,000/microliter, especially less than 100/microliter in three cases who had just received a cancer chemotherapy. Pulsed-field gel electrophoresis, performed in 9 cases, showed an identical DNA-pattern of MRSA in 7 cases, indicating a nosocomial infection. Our method to prevent spread of MRSA targeting solely the patients with MRSA infection was obviously unsatisfactory. We should target also the cases of MRSA colonization and make an effort to wash hands more vigorously. Furthermore, radical reformation such as increasing single sick-rooms drastically and increasing the number of nursing staff is also required.
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Affiliation(s)
- C Sakai
- Division of Hematology and Chemotherapy, Chiba Cancer Center Hospital
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Sakai C, Paperny D, Mathews M, Tanida G, Boyd G, Simons A, Yamamoto C, Mau C, Nutter L. Thought Field Therapy clinical applications: utilization in an HMO in behavioral medicine and behavioral health services. J Clin Psychol 2001; 57:1215-27. [PMID: 11526608 DOI: 10.1002/jclp.1088] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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: 11/06/2022]
Abstract
Thought Field Therapy (TFT) is a self-administered treatment developed by psychologist Roger Callahan. TFT uses energy meridian treatment points and bilateral optical-cortical stimulation while focusing on the targeted symptoms or problem being addressed. The clinical applications of TFT summarized included anxiety, adjustment disorder with anxiety and depression, anxiety due to medical condition, anger, acute stress, bereavement, chronic pain, cravings, depression, fatigue, nausea, neurodermatitis, obsessive traits, panic disorder without agoraphobia, parent-child stress, phobia, posttraumatic stress disorder, relationship stress, trichotillomania, tremor, and work stress. This uncontrolled study reports on changes in self-reported Subjective Units of Distress (SUD; Wolpe, 1969) in 1,594 applications of TFT, treating 714 patients. Paired t-tests of pre- and posttreatment SUD were statistically significant in 31 categories reviewed. These within-session decreases of SUD are preliminary data that call for controlled studies to examine validity, reliability, and maintenance of effects over time. Illustrative case and heart rate variability data are presented.
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Affiliation(s)
- C Sakai
- Kaiser Behavioral Medicine and Behavioral Health Services, Honolulu, HI 96814, USA.
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Sakai C, Iuchi T, Ishii A, Kumagai K, Takagi T. Bacillus cereus brain abscesses occurring in a severely neutropenic patient: successful treatment with antimicrobial agents, granulocyte colony-stimulating factor and surgical drainage. Intern Med 2001; 40:654-7. [PMID: 11506311 DOI: 10.2169/internalmedicine.40.654] [Citation(s) in RCA: 19] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Multiple brain and liver abscesses developed immediately after Bacillus cereus bacteremia in a neutropenic patient with acute lymphoblastic leukemia. After even 8 weeks of antimicrobial chemotherapy together with administration of granulocyte colony-stimulating factor, every infectious process disappeared but the patient's headache has still persisted. Because the wall of one brain abscess became thin and was in danger of rupturing into the ventricle, surgical drainage was performed, resulting in disappearance of headache and resolution of brain abscess. The present case indicates that a combined medical and surgical approach is mandatory to treat patients with brain abscesses.
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Affiliation(s)
- C Sakai
- Division of Hematology and Chemotherapy, Chiba Cancer Center Hospital
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Murase T, Nakamura S, Kawauchi K, Matsuzaki H, Sakai C, Inaba T, Nasu K, Tashiro K, Suchi T, Saito H. An Asian variant of intravascular large B-cell lymphoma: clinical, pathological and cytogenetic approaches to diffuse large B-cell lymphoma associated with haemophagocytic syndrome. Br J Haematol 2001. [PMID: 11122144 DOI: 10.1111/j.1365-2141.2000.02426.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Diffuse large B-cell lymphoma with haemophagocytic syndrome (BCL-HS) has been reported mainly in Asia and is regarded as a distinct variant of intravascular lymphoma (IVL). However, it is unclear whether all cases of BCL-HS fall within the framework of IVL and available clinical information is limited. We analysed 25 cases with BCL-HS, including 11 autopsied cases (median, 66 years; male-female ratio, 1.1:1). The patients presented with fever, anaemia, thrombocytopenia, hepatosplenomegaly, haemophagocytosis, bone marrow invasion, respiratory disturbance and disseminated intravascular coagulopathy, but usually lacked lymphadenopathy, mass formation, neurological abnormalities and skin lesions. The clinical course was aggressive with a median survival of 7 months. The morphological findings were uniform: large lymphoid cells infiltrated vessels and/or sinusoids of the liver, marrow, lung, kidney and other organs. They were positive for CD19, CD20, CD79a and HLA-DR, but negative for CD10, CD23 and CD30. CD5 was positive in five out of 17 cases. Our critical review indicates that BCL-HS is the equivalent of the Asian variant of IVL.
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Affiliation(s)
- T Murase
- Department of Pathology and Clinical Laboratories, Aichi Cancer Centre Hospital, Nagoya, Japan.
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Tanaka M, Hiraya H, Takagi M, Sakai C, Morimoto Y, Nakamura T, Ikebata Y. [Examination of reason to make being at home death difficult--from 42 patients died at home treatment]. Gan To Kagaku Ryoho 2000; 27 Suppl 3:653-5. [PMID: 11190313] [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: 02/19/2023]
Abstract
On the basis of 42 patients who used temporary nursing at home before death from February 1993 to May 2000, we examined various factors thought to influence home and hospital deaths. As a result, we realized the rates of home deaths increased since the establishment of the visit nursing section. We think that the maintenance and understanding of home medical treatment and the visit system on the part of the service providers and is necessary to realize home death.
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Abstract
We report here a 20-year-old man presenting with primary nasal NK/T-cell lymphoma which showed an aggressive clinical course spreading to the spleen and skin despite various treatments. Eight months after high dose chemotherapy followed by autologous peripheral blood stem cell transplantation, acute appendicitis with perforation occurred and the patient underwent appendectomy. The histopathological diagnosis was NK/T-cell lymphoma of the appendix. Lymphoma of the appendix is extremely rare and the majority of appendiceal lymphomas are of B-cell origin. This is the first report of involvement of appendix by nasal NK/T-cell lymphoma.
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Affiliation(s)
- H Tsujimura
- Division of Hematology-Oncology, Chiba Cancer Center Hospital, Chiba, Japan
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