1
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Uraki R, Imai M, Ito M, Yamayoshi S, Kiso M, Jounai N, Miyaji K, Iwatsuki-Horimoto K, Takeshita F, Kawaoka Y. An mRNA vaccine encoding the SARS-CoV-2 receptor-binding domain protects mice from various Omicron variants. NPJ Vaccines 2024; 9:4. [PMID: 38167505 PMCID: PMC10761957 DOI: 10.1038/s41541-023-00800-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
Here, we assessed the efficacy of a lipid nanoparticle-based mRNA vaccine candidate encoding the receptor-binding domain (LNP-mRNA-RBD) in mice. Mice immunized with LNP-mRNA-RBD based on the ancestral strain (ancestral-type LNP-mRNA-RBD) showed similar cellular responses against the ancestral strain and BA.5, but their neutralizing activity against BA.5 was lower than that against the ancestral strain. The ancestral-type LNP-mRNA-RBD protected mice from the ancestral strain or BA.5 challenge; however, its ability to reduce the viral burdens after BA.5 challenge was limited. In contrast, immunization with bivalent LNP-mRNA-RBD consisting of the ancestral-type and BA.4/5-type LNP-mRNA-RBD or monovalent BA.4/5-type LNP-mRNA-RBD elicited robust cellular responses, as well as high and moderate neutralizing titers against BA.5 and XBB.1.5, respectively. Furthermore, the vaccines containing BA.4/5-type LNP-mRNA-RBD remarkably reduced the viral burdens following BA.5 or XBB.1.5 challenge. Overall, our findings suggest that LNP-mRNA-RBD is effective against SARS-CoV-2 infection.
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Affiliation(s)
- Ryuta Uraki
- Division of Virology, Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan
- The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, 162-8655, Japan
| | - Masaki Imai
- Division of Virology, Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan
- The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, 162-8655, Japan
| | - Mutsumi Ito
- Division of Virology, Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan
| | - Seiya Yamayoshi
- Division of Virology, Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan
- The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, 162-8655, Japan
| | - Maki Kiso
- Division of Virology, Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan
| | - Nao Jounai
- Biologics Division, Vaccine Research Laboratories, Daiichi Sankyo Co., Ltd, Tokyo, 134-0081, Japan
| | - Kazuki Miyaji
- Biologics Division, Vaccine Research Laboratories, Daiichi Sankyo Co., Ltd, Tokyo, 134-0081, Japan
| | - Kiyoko Iwatsuki-Horimoto
- Division of Virology, Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan
| | - Fumihiko Takeshita
- Biologics Division, Vaccine Research Laboratories, Daiichi Sankyo Co., Ltd, Tokyo, 134-0081, Japan
| | - Yoshihiro Kawaoka
- Division of Virology, Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639, Japan.
- The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, 162-8655, Japan.
- Influenza Research Institute, Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-, Madison, WI, 53711, USA.
- The University of Tokyo, Pandemic Preparedness, Infection and Advanced Research Center, Tokyo, 162-8655, Japan.
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2
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Sumino Y, Yamashita R, Miyaji K, Ishikawa H, Otani M, Yamamoto D, Okita E, Okamoto Y, Krafft MP, Yoshikawa K, Shioi A. Droplet duos on water display pairing, autonomous motion, and periodic eruption. Sci Rep 2023; 13:12377. [PMID: 37524759 PMCID: PMC10390526 DOI: 10.1038/s41598-023-39094-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 07/20/2023] [Indexed: 08/02/2023] Open
Abstract
Under non-equilibrium conditions, liquid droplets dynamically couple with their milieu through the continuous flux of matter and energy, forming active systems capable of self-organizing functions reminiscent of those of living organisms. Among the various dynamic behaviors demonstrated by cells, the pairing of heterogeneous cell units is necessary to enable collective activity and cell fusion (to reprogram somatic cells). Furthermore, the cyclic occurrence of eruptive events such as necroptosis or explosive cell lysis is necessary to maintain cell functions. However, unlike the self-propulsion behavior of cells, cyclic cellular behavior involving pairing and eruption has not been successfully modeled using artificial systems. Here, we show that a simple droplet system based on quasi-immiscible hydrophobic oils (perfluorodecalin and decane) deposited on water, mimics such complex cellular dynamics. Perfluorodecalin and decane droplet duos form autonomously moving Janus or coaxial structures, depending on their volumes. Notably, the system with a coaxial structure demonstrates cyclic behavior, alternating between autonomous motion and eruption. Despite their complexity, the dynamic behaviors of the system are consistently explained in terms of the spreading properties of perfluorodecalin/decane duplex interfacial films.
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Affiliation(s)
- Yutaka Sumino
- Department of Applied Physics, Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo, 125-8585, Japan.
| | - Ryo Yamashita
- Department of Chemical Engineering and Materials Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Kazuki Miyaji
- Department of Chemical Engineering and Materials Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Hiroaki Ishikawa
- Department of Physics, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Maho Otani
- Department of Chemical Engineering and Materials Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Daigo Yamamoto
- Department of Chemical Engineering and Materials Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Erika Okita
- Department of Chemical Engineering, Osaka Metropolitan University, Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Yasunao Okamoto
- Research Center for Membrane and Film Technology, Kobe University, Kobe, 657-8501, Japan
| | - Marie Pierre Krafft
- Institut Charles Sadron (CNRS), University of Strasbourg, 23 rue du Loess, 67034, Strasbourg, France.
| | - Kenichi Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, 610-0394, Japan
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto, 606-8501, Japan
| | - Akihisa Shioi
- Department of Chemical Engineering and Materials Science, Doshisha University, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan.
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3
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Hamazaki N, Kamiya K, Nozaki K, Yamashita M, Uchida S, Noda T, Ogura K, Nagumo D, Maekawa E, Yamaoka-Tojo M, Matsunaga A, Kitamura T, Ako J, Miyaji K. Trends and outcomes of early rehabilitation in intensive care unit for patients with cardiovascular disease – a cohort study with propensity score-matched analysis. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2468] [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
Early rehabilitation in the intensive care unit (ICU), including early mobility therapy, is known to improve the clinical outcomes in patients with critically ill. However, the effectiveness of acute-phase cardiovascular rehabilitation (CR) during ICU treatment have not been thoroughly evaluated in patients with cardiovascular disease (CVD).
Purpose
We aimed to investigate the trends and outcomes of acute-phase CR in the ICU for patients with CVD, including in-hospital and long-term clinical outcomes.
Methods
We reviewed 1948 consecutive patients with CVD admitted to tertiary academic ICU at a university hospital. Patients were arbitrarily assessed by an ICU team consisting of medical and surgical doctors, nurses and physiotherapists within 24 hours after admission to ICU to discover whether their rehabilitation could be initiated according to the specific clinical trial and statement. As clinical characteristics, disease aetiology, comorbid conditions, and ICU treatment were obtained from an electronic database. We evaluated the probability of return to walking independence and return to home as in-hospital clinical outcomes. All patients were followed for five years and investigated all-cause and cardiovascular events after hospital discharge as long-term clinical outcomes. The associations between the implementation of CR during ICU treatment (ICU-CR) and clinical outcomes were evaluated using propensity score-matched analysis with adjustment for clinical characteristics in all matched patients and various subgroups, including aged >65 years, surgical patients, emergency, and length of ICU stay ≥48 hours.
Results
Out of studied patients, 1092 patients received ICU-CR, the number of which positively correlated with year-trend (r=0.986, P<0.001). After propensity score matching with adjustment for clinical characteristics including calendar years, 758 patients were included for analysis (pairs of n=379 ICU-CR and non-ICU-CR). The ICU-CR was significantly associated with a higher probability of return to walking independence (incident rate ratio [IRR], 2.04; 95% confidence interval [CI], 1.77–2.36) and return to home (IRR, 1.22 95% CI, 1.05–1.41). These associations were consistently observed in various subgroups regarding CVD conditions (Figure 1). During the median follow-up periods of 2.6 years, all-cause clinical events and cardiovascular events occurred in 289 patients (38.1%) and 153 patients (20.2%), respectively. The ICU-CR showed significantly lower rates of five-year all-cause and cardiovascular events than non-ICU-CR (hazard ratio [95% CI] for all-cause events and cardiovascular events, 0.71 [0.56–0.89] and 0.69 [0.50–0.95], respectively, Figure 2).
Conclusions
The implementation of acute-phase CR in the ICU increased with year-trend, considered beneficial to improve in-hospital and long-term clinical outcomes in patients with CVD and various subgroups of relatively severe disease conditions.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Kamiya
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - K Nozaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - M Yamashita
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - S Uchida
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - T Noda
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - K Ogura
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - D Nagumo
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - M Yamaoka-Tojo
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - A Matsunaga
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - T Kitamura
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - K Miyaji
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
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4
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Ogura K, Hamazaki N, Kamiya K, Kitamura T, Kobayashi S, Ichikawa T, Yamashita M, Uchida S, Noda T, Nagumo D, Maekawa E, Yamaoka-Tojo M, Matsunaga A, Ako J, Miyaji K. Perme ICU Mobility Score as a comprehensive assessment tool of acute-phase rehabilitation is correlated with clinical outcomes in patients after cardiovascular surgery. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2469] [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: 11/13/2022] Open
Abstract
Abstract
Background
Early mobility therapy in the intensive care unit (ICU) is widely employed to improve the physical function and prognosis of patients with critically ill. On the other hand, patients who undergo cardiovascular surgery frequently suffer from disabilities after ICU care due to their cardiopulmonary conditions and treatments. However, few studies have reported the procedures and assessments of acute-phase rehabilitation in these patients. Recently, the Perme ICU Mobility Score (Perme Score) was developed as a reliable tool to assess comprehensive mobility status of patients in the ICU. We hypothesised that the Perme Score is a useful tool for assessing the mobility levels in the ICU and predicting clinical outcomes in patients undergoing acute-phase rehabilitation after cardiovascular surgery.
Purpose
To investigate the associations between the Perme Score within the second days after cardiovascular surgery and the patients' clinical outcomes, including physical function and the incidence of clinical events.
Methods
We studied 224 consecutive patients (34.4% female; aged 65±13 years) who were admitted to the ICU of a tertiary academic hospital after cardiac and/or major vascular surgery. Clinical characteristics including patient profiles, comorbidities, surgical details and APACHE II and SOFA scores were evaluated on ICU admission. The Perme Score contains categories on mental status, potential mobility barriers, muscle strength and mobility level, with higher scores indicating greater activity levels in the ICU. We assessed the Perme Score within the second days after the surgery. As a physical function at hospital discharge, we measured the six-minute walk distance (6MWD). The primary endpoint was a composite outcome of the number of all-cause mortality and/or all-cause unplanned readmission. We analysed the associations of the Perme Score with the 6MWD and the incidence of clinical events using multiple regression analysis and multivariate Poisson regression analysis, respectively.
Results
After adjusting for clinical confounding factors, a higher Perme Score was an independent factor of a higher 6MWD (Table 1). During the median follow-up period of 1.3 years, 51 cases of all-cause mortality/readmission occurred in 37 (16.5%) patients, with an incidence rate of 18.6/100 person-years. In the multivariate Poisson regression analysis, even after adjusting for the severity score in the ICU, a higher Perme Score was significantly and independently associated with lower rates of all-cause clinical events (adjusted incident rate ratio: 0.96, 95% confidence interval: 0.93–0.99, P=0.008, Figure 1).
Conclusions
The Perme Score within the second days after cardiovascular surgery is correlated with physical function at hospital discharge and the incidence of clinical events after discharge. Thus, a comprehensive assessment of acute-phase rehabilitation after cardiovascular surgery may be useful in predicting clinical outcomes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- K Ogura
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Kamiya
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - T Kitamura
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
| | - S Kobayashi
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - T Ichikawa
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - M Yamashita
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - S Uchida
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - T Noda
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - D Nagumo
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - M Yamaoka-Tojo
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - A Matsunaga
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - K Miyaji
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
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5
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Ikeda Y, Miyaji K, Ohashi T, Nakajima T, Junkong P. VULCANIZATION FOR REINFORCEMENT OF RUBBER. Rubber Chemistry and Technology 2022. [DOI: 10.5254/rct.22.77939] [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: 11/11/2022]
Abstract
ABSTRACT
Sulfur cross-linking reagents play critical roles not only in cross-linking rubber chains but also in controlling network morphology for reinforcement of rubber. Zinc oxide (ZnO) is clearly discovered as the main component for both roles. Especially, the importance of network inhomogeneity, which is significantly governed by the dispersion of ZnO particles, is emphasized for reinforcing rubber materials. Specifically, the formation of network domains and their continuous structures is discussed by combining the mechanical properties of the vulcanizates from the viewpoint of the reinforcement effect of rubber. Two continuous structures of network domains are termed as the network-domain cluster and network-domain network, which are observed by atomic force microscopy. The ZnO particles play a role as template for the formation of the continuous structures of network domains. The findings provide us with a practical hint for producing high-performance rubber materials.
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Affiliation(s)
- Y. Ikeda
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan
| | - K. Miyaji
- Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan
| | - T. Ohashi
- Graduate School of Science and Technology, Kyoto Institute of Technology,Matsugasaki, Sakyo, Kyoto 606-8585, Japan
| | - T. Nakajima
- Graduate School of Science and Technology, Kyoto Institute of Technology,Matsugasaki, Sakyo, Kyoto 606-8585, Japan
| | - P. Junkong
- Kyoto Institute of Technology, Matsugasaki, Sakyo, Kyoto 606-8585, Japan
- Department of Chemistry, Faculty of Science, Mahidol University, Ratchthewee, Bangkok 10400, Thailand
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Yamashita M, Kamiya K, Matsunaga A, Kitamura T, Hamazaki N, Nozaki K, Ichikawa T, Maekawa E, Meguro K, Yamaoka-Tojo M, Miyaji K. Low skeletal muscle density combined with muscle dysfunction predicts adverse events after adult cardiovascular surgery. Eur J Prev Cardiol 2021. [DOI: 10.1093/eurjpc/zwab061.358] [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]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Other. Main funding source(s): This study was supported by the Grant for Japan Society for the Promotion of Science (JSPS) KAKENHI.
Introduction
Although muscle dysfunction is widely known as a poor prognostic factor in patients with cardiovascular disease, no study has examined whether the addition of low skeletal muscle density (SMD) assessed by computed tomography (CT) to muscle dysfunction is useful.
Purpose
The present study aimed to examine whether SMDs can strengthen the predictive ability of muscle dysfunction for adverse events in patients who underwent cardiovascular surgery.
Methods
We retrospectively reviewed 853 patients (median age: 69 years, 65.1% male) aged ≥40 years who had preoperative CT for risk management purposes and muscle dysfunctions measured during postoperative cardiac rehabilitation. Muscle dysfunctions were determined from weakness (low grip strength) and slowness (slow gait speed) based on the Asia Working Group for Sarcopenia. Low SMD based on transverse abdominal CT images was defined as a mean Hounsfield unit of the psoas muscle <45. To examine the complementary prognostic value for all-cause deaths, all-cause events, and cardiovascular-related events when low SMDs were added to four patterns of muscle dysfunction (weakness only, slowness only, weakness or slowness, and weakness and slowness), the continuous net reclassification improvement (cNRI) and integrated discrimination improvement (IDI) index were calculated.
Results
For all definitions of muscle dysfunction, the addition of SMDs was shown to significantly improve the cNRI (estimates: 0.377 to 0.468 for all-cause death, 0.220 to 0.248 for all-cause events, 0.308 to 0.322 for cardiovascular-related events) and IDI (estimates: 0.005 to 0.011 for all-cause death, 0.005 to 0.010 for all-cause events, 0.009 to 0.012 for cardiovascular-related events) in all analyses. Low SMDs combined with muscle dysfunctions were associated with the highest risk of all-cause death (Figure 1: A-D). Patients with neither low SMDs nor muscle dysfunction had the lowest risk of all-cause events and cardiovascular-related events (Figure1: E-L).
Conclusion
The predictive ability of muscle dysfunction for adverse events was consistently increased by addition of SMDs in patients who underwent cardiovascular surgery. Our results suggest that when CT is performed for any clinical investigation, the addition of the organic assessment of skeletal muscle can strengthen the diagnostic accuracy of muscle wasting.
Abstract Figure 1
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Affiliation(s)
- M Yamashita
- Kitasato University Graduate School of Medical Sciences, Sagamihara, Japan
| | - K Kamiya
- Kitasato University Graduate School of Medical Sciences, Sagamihara, Japan
| | - A Matsunaga
- Kitasato University Graduate School of Medical Sciences, Sagamihara, Japan
| | - T Kitamura
- Kitasato University School of Medicine, Department of Cardiovascular Surgery, Sagamihara, Japan
| | - N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation, Sagamihara, Japan
| | - K Nozaki
- Kitasato University Hospital, Department of Rehabilitation, Sagamihara, Japan
| | - T Ichikawa
- Kitasato University Hospital, Department of Rehabilitation, Sagamihara, Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine, Sagamihara, Japan
| | - K Meguro
- Kitasato University School of Medicine, Department of Cardiovascular Medicine, Sagamihara, Japan
| | - M Yamaoka-Tojo
- Kitasato University Graduate School of Medical Sciences, Sagamihara, Japan
| | - K Miyaji
- Kitasato University School of Medicine, Department of Cardiovascular Surgery, Sagamihara, Japan
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Ishimaru H, Okamoto N, Fujimura M, Miyaji K, Shimakura H, Takase Y, Mizukami K, Uchiyama J, DeBoer DJ, Sakaguchi M. IgE sensitivity to Malassezia pachydermatis and mite allergens in dogs with atopic dermatitis. Vet Immunol Immunopathol 2020; 226:110070. [PMID: 32492589 DOI: 10.1016/j.vetimm.2020.110070] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 02/06/2020] [Accepted: 05/17/2020] [Indexed: 10/24/2022]
Abstract
In this study, dogs with atopic dermatitis were separated into non-food-induced atopic dermatitis (NFIAD) group (n = 15) and food-induced atopic dermatitis (FIAD) group (n = 37) based on an elimination diet test. IgE reactivity for crude Malassezia pachydermatis (M. pachydermatis) and house dust mites (HDM) allergen extracts was investigated in the two groups using fluorometric enzyme-linked immunosorbent assay (ELISA) and intradermal skin test (IDST). Nine (60%) of the 15 dogs in NFIAD group and 6 (16%) of the 37 dogs in FIAD group showed specific IgE for M. pachydermatis (Mann-Whitney U-test, P < 0.01). By immunoblotting analysis, the pooled serum samples from dogs with IgE for M. pachydermatis showed IgE reactivity for 50 kDa protein of M. pachydermatis. Twelve (80%) of the 15 dogs in NFIAD group and 8 (22%) of the 37 dogs in FIAD group showed specific IgE for HDM (Mann-Whitney U-test, P < 0.01). In addition, the dogs in NFIAD group significantly show a positive IDST to M. pachydermatis and HDM extracts compared with the dogs in FIAD group. The results suggest that dogs with NFIAD are at increased risk of becoming sensitized to the normal commensal organism M. pachydermatis compared with dogs with FIAD, perhaps co-sensitization occurred due to an HDM protease antigen's, Der f 1 and/or Der p 1, proteolytic activity related epidermal skin barrier defects. Treatment to limit skin colonization may thus be especially important in NFIAD.
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Affiliation(s)
- Hironobu Ishimaru
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Noriaki Okamoto
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Masato Fujimura
- Fujimura Animal Hospital, 5-10-26, Aomatanihigashi, Minou, Osaka, 562-0022, Japan
| | - Kazuki Miyaji
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Hidekatsu Shimakura
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yukari Takase
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Keijiro Mizukami
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Jumpei Uchiyama
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Douglas J DeBoer
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, USA
| | - Masahiro Sakaguchi
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
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Miyamoto T, Ishido H, Aoki T, Miyaji K. Newly Created Canine Model of Sinus Node Dysfunction by Minimally Invasive Procedure. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705426] [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: 10/24/2022]
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9
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Miyaji K, Nakae K, Iwao T, Takahashi F, Watanabe R, Katada A. An Attempt to Assess the Processing of Verbs by the Simultaneous Measurements of ERPs and NIRS. Int J Psychophysiol 2018. [DOI: 10.1016/j.ijpsycho.2018.07.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jounai N, Yoshioka M, Tozuka M, Inoue K, Oka T, Miyaji K, Ishida K, Kawai N, Ikematsu H, Kawakami C, Shimizu H, Mori M, Ishii KJ, Takeshita F. Age-Specific Profiles of Antibody Responses against Respiratory Syncytial Virus Infection. EBioMedicine 2017; 16:124-135. [PMID: 28111238 PMCID: PMC5474434 DOI: 10.1016/j.ebiom.2017.01.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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] [Received: 11/08/2016] [Revised: 01/05/2017] [Accepted: 01/10/2017] [Indexed: 12/21/2022] Open
Abstract
Respiratory syncytial virus (RSV) is one of the most prevalent causative agents of lower respiratory tract infections worldwide, especially in infants around 3 to 4 months old. Infants at such a young age have maternally-transferred passive antibodies against RSV but do not have active immune systems efficient enough for the control of RSV infection. In order to elucidate age-specific profiles of immune responses against RSV protection, antibody responses were examined by using blood samples in both acute and convalescent phases obtained from child patients and adult patients. In addition to the serum neutralization activity, antibody responses to the RSV fusion protein (F protein) were dissected by analyzing levels of total IgG, IgG subclasses, the binding stability, and the levels of antibody for the neutralization epitopes. It was suggested that children's antibody responses against RSV are matured over months and years in at least 5 stages based on 1) levels of the neutralization titer and IgG3 for F protein in the convalescent phase, 2) geometric mean ratios of the neutralization titers and levels of IgG1 and IgG2 for F protein in the convalescent phase compared to those levels in the acute phase, 3) the affinity maturation of IgG for F protein and the cross reactivity of IgG for RSV glycoproteins of groups A and B, 4) levels of neutralization epitope-specific IgG, and 5) augmentation of overall antibody responses due to repetitive RSV infection. Children's antibody responses against RSV are matured over months and years in at least 5 stages. Age-specific profiles of antibody responses after RSV infection are proposed. The profile of IgG3 specific to F protein reflects infants' own antibody response after RSV infection.
In this study, antibody responses to respiratory syncytial virus (RSV) were evaluated by quantitative and qualitative multivariate analyses of acute and convalescent sera from patients infected with RSV. The results suggested that the profiles of antibody responses after RSV infections are delineated by independent factors such as the development of children's immune system and the natural infection with RSV in the presence or absence of maternal antibodies.
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Affiliation(s)
- Nao Jounai
- Kitasato Daiichi Sankyo Vaccine Co., Ltd., 1-16-13 Kitakasai, Edogawa-ku, Tokyo 134-8630, Japan; Laboratory of Adjuvant Innovation, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito-Asagi, Ibaraki City, Osaka 567-0085, Japan
| | - Megumi Yoshioka
- Kitasato Daiichi Sankyo Vaccine Co., Ltd., 1-16-13 Kitakasai, Edogawa-ku, Tokyo 134-8630, Japan
| | - Miyuki Tozuka
- Kitasato Daiichi Sankyo Vaccine Co., Ltd., 1-16-13 Kitakasai, Edogawa-ku, Tokyo 134-8630, Japan; Laboratory of Adjuvant Innovation, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito-Asagi, Ibaraki City, Osaka 567-0085, Japan
| | - Kazue Inoue
- Kitasato Daiichi Sankyo Vaccine Co., Ltd., 1-16-13 Kitakasai, Edogawa-ku, Tokyo 134-8630, Japan
| | - Tatsuya Oka
- Kitasato Daiichi Sankyo Vaccine Co., Ltd., 1-16-13 Kitakasai, Edogawa-ku, Tokyo 134-8630, Japan
| | - Kazuki Miyaji
- Kitasato Daiichi Sankyo Vaccine Co., Ltd., 1-16-13 Kitakasai, Edogawa-ku, Tokyo 134-8630, Japan; Laboratory of Adjuvant Innovation, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito-Asagi, Ibaraki City, Osaka 567-0085, Japan
| | - Katsuyasu Ishida
- Daiichi Sankyo Co., Ltd., 3-5-1 Nihonbashi Honcho, Chuo-ku, Tokyo 103-8426, Japan
| | - Naoki Kawai
- Japan Physicians Association, 2-5 Kanda Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Hideyuki Ikematsu
- Japan Physicians Association, 2-5 Kanda Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Chiaki Kawakami
- Department of Pediatrics, Yokosuka Kyosai Hospital, 1-16 Yonegahamadori, Yokosuka, Kanagawa 238-8558, Japan
| | - Hiroyuki Shimizu
- Children's Medical Center, Yokohama City University Medical Center, 4-57 Urafune, Minami-ku, Yokohama, Kanagawa 232-0024, Japan
| | - Masaaki Mori
- Department of Lifetime Clinical Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - Ken J Ishii
- Laboratory of Adjuvant Innovation, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8 Saito-Asagi, Ibaraki City, Osaka 567-0085, Japan
| | - Fumihiko Takeshita
- Daiichi Sankyo Co., Ltd., 3-5-1 Nihonbashi Honcho, Chuo-ku, Tokyo 103-8426, Japan.
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11
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Sudo M, Miyaji K, Späth PJ, Morita-Matsumoto K, Yamaguchi Y, Yuki N. Polyclonal IgM and IgA block in vitro complement deposition mediated by anti-ganglioside antibodies in autoimmune neuropathies. Int Immunopharmacol 2016; 40:11-15. [DOI: 10.1016/j.intimp.2016.08.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 08/14/2016] [Accepted: 08/18/2016] [Indexed: 01/23/2023]
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12
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Miyaji K, Furukawa JI, Suzuki Y, Yamamoto N, Shinohara Y, Yuki N. Altered gene expression of glycosyltransferases and sialyltransferases and total amount of glycosphingolipids following herpes simplex virus infection. Carbohydr Res 2016; 434:37-43. [PMID: 27588895 DOI: 10.1016/j.carres.2016.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 06/01/2016] [Revised: 07/21/2016] [Accepted: 08/12/2016] [Indexed: 11/15/2022]
Abstract
There is a case report of a patient with overlapping Guillain-Barré syndrome and Bickerstaff brainstem encephalitis after infection with herpes simplex virus type 1 (HSV-1), who carried high titers of serum anti-GQ1b IgG antibodies. Several studies have linked viral infection to the modulation of ganglioside expression such as human T-lymphotropic virus to GD2 and simian virus 40 to GM3. Also, enhancement of the expression of GM2 on the cell membrane after cytomegalovirus infection has been reported. The objective of this study was to unveil the relationship between HSV-1 infection and the alteration of cellular ganglioside expression in neuronal and glial cell lines. In addition to these cell lines, several human tumor cell lines including astrocytoma cells, neuroblastoma cells, T-cell leukemia cells and kidney cells derived from normal human and monkey were infected with HSV-1 as well as HSV-2. To measure changes in ganglioside-related gene expressions and gangliosides levels in cells, quantitative PCR and glycosphingolipid-glycomic analysis were performed. Changes in gene expression of glycosyltransferases and sialyltransferases were observed in HSV-1- and HSV-2-infected cells, although with different trends. 39 glycosphingolipid-glycans were quantitatively analyzed. HSV-1 and HSV-2 infections resulted in changes in the total amount of gangliosides depending on the cell lines used and type of virus. Qualitative changes caused by each infection of HSV-1 and HSV-2 were almost negligible.
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Affiliation(s)
- Kazuki Miyaji
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore
| | - Jun-Ichi Furukawa
- Laboratory of Medical and Functional Glycomics, Graduate School of Advanced Life Science, and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo 001-0021, Japan
| | - Youichi Suzuki
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore
| | - Naoki Yamamoto
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore
| | - Yasuro Shinohara
- Laboratory of Medical and Functional Glycomics, Graduate School of Advanced Life Science, and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo 001-0021, Japan.
| | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore.
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13
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Miyaji K, Okamoto N, Saito A, Yasueda H, Takase Y, Shimakura H, Saito S, Sakaguchi M. Cross-reactivity between major IgE core epitopes on Cry j 2 allergen of Japanese cedar pollen and relevant sequences on Cha o 2 allergen of Japanese cypress pollen. Allergol Int 2016; 65:286-92. [PMID: 26916996 DOI: 10.1016/j.alit.2016.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 12/27/2015] [Accepted: 01/13/2016] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Cry j 2 and Cha o 2 are major allergens in Japanese cedar (Cryptomeria japonica; CJ) and Japanese cypress (Chamaecyparis obtusa; CO) pollen, respectively. Here, we assessed the epitopes related to the cross-reactivity between Cry j 2 and Cha o 2 using in vitro analyses. METHODS Peptides were synthesized based on Cry j 2 sequential epitopes and relevant Cha o 2 amino acid sequences. Four representative monoclonal antibodies (mAbs) against Cry j 2 were used according to their epitope recognitions. Serum samples were collected from 31 patients with CJ pollinosis. To investigate cross-reactivity between Cry j 2 and Cha o 2, ELISA and inhibition ELISA were performed with mAbs and sera from patients with CJ pollinosis. RESULTS Two of four mAbs had reactivity to both Cry j 2 and Cha o 2. Of these two mAbs, one mAb (T27) recognized the amino acid sequence (169)KVVNGRTV(176) on Cha o 2. This is related to the core epitope (169)KWVNGREI(176) on Cry j 2, which is an important IgE epitope. In addition, we found that these correlative sequences and purified allergens showed cross-reactivity between Cry j 2 and Cha o 2 in IgE of CJ patients. CONCLUSIONS We demonstrated the importance of (169)KVVNGRTV(176) in Cha o 2 for cross-reactivity with the Cry j 2 epitope (169)KWVNGREI(176), which plays an important role in allergenicity in CJ pollinosis. Our results are useful for the development of safer and more efficient therapeutic strategies for the treatment of CJ and CO pollen allergies.
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Kuriyama T, Morimoto G, Miyaji K, Hasegawa M. Cellular basis of anti-predator adaptation in a lizard with autotomizable blue tail against specific predators with different colour vision. J Zool (1987) 2016. [DOI: 10.1111/jzo.12361] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- T. Kuriyama
- Department of Biology; Faculty of Science; Toho University; Funabashi Chiba Japan
- Department of Geology; Lund University; Lund Sweden
| | - G. Morimoto
- Department of Life-Sciences; Rikkyo University; Toshima Tokyo Japan
- Tokyo Bay Ecosystem Research Center; Toho University; Funabashi Chiba Japan
| | - K. Miyaji
- Department of Biology; Faculty of Science; Toho University; Funabashi Chiba Japan
| | - M. Hasegawa
- Department of Biology; Faculty of Science; Toho University; Funabashi Chiba Japan
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15
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Kawano K, Shimakura H, Nagata N, Masashi Y, Suto A, Suto Y, Uto S, Ueno H, Hasegawa T, Ushigusa T, Nagai T, Arawatari Y, Miyaji K, Ohmori K, Mizuno T. Prevalence of food-responsive enteropathy among dogs with chronic enteropathy in Japan. J Vet Med Sci 2016; 78:1377-80. [PMID: 27150023 PMCID: PMC5053946 DOI: 10.1292/jvms.15-0457] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
There have been limited reports on the prevalence of adverse food reactions among dogs
suffering from chronic enteropathy (CE) in Japan. We examined the prevalence and
histological features of food-responsive enteropathy (FRE) in a total of 32 dogs with
history of CE. Fourteen of 18 cases (56.2%) diagnosed as FRE had lymphocytic-plasmacytic
enteritis or eosinophilic enteritis by histopathological examination. Characteristic
histopathological changes indicating FRE were not identified in 18 cases, though 4 cases
did not show any abnormalities. Results collected from this study provided important
information that can help to change the way dogs with CE are treated in the future.
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Affiliation(s)
- Koji Kawano
- Primo Animal Hospital Nerima Animal Allergy Medical Center, Tokyo, Japan
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16
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Wong AHY, Kokubun N, Fukami Y, Miyaji K, Yuki N. Chronic inflammatory demyelinating polyneuropathy with membranous nephropathy. J Peripher Nerv Syst 2016; 20:63-6. [PMID: 25977098 DOI: 10.1111/jns.12113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 04/12/2015] [Accepted: 04/17/2015] [Indexed: 12/29/2022]
Affiliation(s)
- Anna Hiu Yi Wong
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Norito Kokubun
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Yuki Fukami
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Kazuki Miyaji
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Brain & Mind Research Institute, University of Sydney, Sydney, Sydney, New South Wales, Australia
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17
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Miyaji K, Paul F, Shahrizaila N, Umapathi T, Yuki N. Autoantibodies to tetraspanins (CD9, CD81 and CD82) in demyelinating diseases. J Neuroimmunol 2015; 291:78-81. [PMID: 26857499 DOI: 10.1016/j.jneuroim.2015.12.012] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 11/27/2015] [Accepted: 12/28/2015] [Indexed: 01/10/2023]
Abstract
Tetraspanin family proteins, CD9, CD81 and CD82 are expressed in the oligodendrocytes and Schwann cells. We investigated autoantibodies to tetraspanin proteins in patients with demyelinating diseases. Sera were collected from 119 multiple sclerosis patients, 19 neuromyelitis optica, 42 acute inflammatory demyelinating polyneuropathy, 23 chronic inflammatory demyelinating polyneuropathy and 13 acute motor axonal neuropathy as well as 55 healthy controls. Few multiple sclerosis and acute inflammatory demyelinating polyneuropathy patients had autoantibodies that were weakly reactive to CD9 or CD81 but the significance is unclear. It is unlikely that these autoantibodies are pathogenic or serve as potential biomarkers in demyelinating diseases.
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Affiliation(s)
- Kazuki Miyaji
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Friedemann Paul
- NeuroCure Clinical Research and Clinical and Experimental Multiple Sclerosis Research Center, Department of Neurology, Charité University Medicine, Berlin, Germany
| | - Nortina Shahrizaila
- Division of Neurology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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18
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Miura Y, Miyaji K, Chai YL, Chen CLH, Lai MKP, Yuki N. Autoantibodies to GM1 and GQ1bα are not biological markers of Alzheimer's disease. J Alzheimers Dis 2015; 42:1165-9. [PMID: 25024341 DOI: 10.3233/jad-140474] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A few studies have reported the association of autoantibodies to GM1 or GQ1bα with Alzheimer's disease (AD) or vascular dementia. Here we investigated whether patients with AD or vascular dementia had high titers of the anti-ganglioside antibodies. Sera were obtained from patients with AD (n = 22), vascular dementia (n = 14), Guillain-Barré syndrome, and multifocal motor neuropathy as well as normal controls. Enzyme-linked immunosorbent assay showed titers of IgG and IgM anti-GM1, anti-GQ1bα, and anti-GT1aα antibodies did not differ among AD, vascular dementia, and normal controls, and being remarkably lower than those in Guillain-Barré syndrome and multifocal motor neuropathy. The anti-ganglioside antibodies are not biological markers of AD.
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Affiliation(s)
- Yumako Miura
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore Division of Integrative Bioscience, Institute of Regenerative Medicine and Biofunction, Tottori University Graduate School of Medical Sciences, Yonago, Japan
| | - Kazuki Miyaji
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yuek Ling Chai
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Christopher L H Chen
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Mitchell K P Lai
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore Department of Phsyiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Miyaji K, Kato M, Ohtani N, Ohta M. Experimental Verification of the Effects on Normal Domestic Cats by Feeding Prescription Diet for Decreasing Stress. J APPL ANIM WELF SCI 2015; 18:355-62. [DOI: 10.1080/10888705.2015.1005301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Miyaji K, Devaux J, Yuki N, Sawai S, Mori M, Kuwabara S, Miyaji K, Yuki N, Sawai S, Mori M, Kuwabara S. Moesin is a possible target molecule for cytomegalovirus-related Guillain-Barre syndrome. Neurology 2014; 83:2314. [DOI: 10.1212/wnl.0000000000001090] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Goirigolzarri Artaza J, Gallego Delgado M, Jaimes Castellanos C, Cavero Gibanel M, Pastrana Ledesma M, Alonso Pulpon L, Gonzalez Mirelis J, Al Ansi RZ, Sokolovic S, Cerin G, Szychta W, Popa BA, Botezatu D, Benea D, Manganiello S, Corlan A, Jabour A, Igual Munoz B, Osaca Asensi J, Andres La Huerta A, Maceira Gonzalez A, Estornell Erill J, Cano Perez O, Sancho-Tello M, Alonso Fernandez P, Sepulveda Sanchez P, Montero Argudo A, Palombo C, Morizzo C, Baluci M, Kozakova M, Panajotu A, Karady J, Szeplaki G, Horvath T, Tarnoki D, Jermendy A, Geller L, Merkely B, Maurovich-Horvat P, Moustafa S, Mookadam F, Youssef M, Zuhairy H, Connelly M, Prieur T, Alvarez N, Ashikhmin Y, Drapkina O, Boutsikou M, Demerouti E, Leontiadis E, Petrou E, Karatasakis G, Kozakova M, Morizzo C, Bianchi V, Marchi B, Federico G, Palombo C, Chatzistamatiou E, Moustakas G, Memo G, Konstantinidis D, Mpampatzeva Vagena I, Manakos K, Traxanas K, Vergi N, Feretou A, Kallikazaros I, Goto M, Uejima T, Itatani K, Pedrizzetti G, Mada R, Daraban A, Duchenne J, Voigt J, Chiu DYY, Green D, Johnstone L, Sinha S, Kalra P, Abidin N, Sikora-Frac M, Zaborska B, Maciejewski P, Bednarz B, Budaj A, Nemes A, Sasi V, Gavaller H, Kalapos A, Domsik P, Katona A, Szucsborus T, Ungi T, Forster T, Ungi I, Pluchinotta F, Arcidiacono C, Saracino A, Carminati M, Bussadori C, Dahlslett T, Karlsen S, Grenne B, Sjoli B, Bendz B, Skulstad H, Smiseth O, Edvardsen T, Brunvand H, Vereckei A, Szelenyi Z, Szenasi G, Santoro C, Galderisi M, Niglio T, Santoro M, Stabile E, Rapacciuolo A, Spinelli L, De Simone G, Esposito G, Trimarco B, Hubert S, Jacquier A, Fromonot J, Resseguier C, Tessier A, Guieu R, Renard S, Haentjiens J, Lavoute C, Habib G, Menting ME, Koopman L, Mcghie J, Rebel B, Gnanam D, Helbing W, Van Den Bosch A, Roos-Hesselink J, Shiino K, Yamada A, Sugimoto K, Takada K, Takakuwa Y, Miyagi M, Iwase M, Ozaki Y, Hayashi T, Itatani K, Inuzuka R, Shindo T, Hirata Y, Shimizu N, Miyaji K, Henri C, Dulgheru R, Magne J, Kou S, Davin L, Nchimi A, Oury C, Pierard L, Lancellotti P, Kovalyova O, Honchar O, Tengku W, Ketaren A, Mingo Santos S, Monivas Palomero V, Restrepo Cordoba A, Rodriguez Gonzalez E, Goirigolzarri Artaza J, Sayago Silva I, Garcia Lunar I, Mitroi C, Cavero Gibanel M, Segovia Cubero J, Ryu S, Park J, Kim S, Choi J, Goh C, Byun Y, Choi J, Westholm C, Johnson J, Jernberg T, Winter R, Rio P, Moura Branco L, Galrinho A, Pinto Teixeira P, Viveiros Monteiro A, Portugal G, Pereira-Da-Silva T, Afonso Nogueira M, Abreu J, Cruz Ferreira R, Mazzone A, Botto N, Paradossi U, Chabane A, Francini M, Cerone E, Baroni M, Maffei S, Berti S, Ghattas A, Shantsila E, Griffiths H, Lip G, Galli E, Guirette Y, Daudin M, Auffret V, Mabo P, Donal E, Fabiani I, Conte L, Scatena C, Barletta V, Pratali S, De Martino A, Bortolotti U, Naccarato A, Di Bello V, Falanga G, Alati E, Di Giannuario G, Zito C, Cusma' Piccione M, Carerj S, Oreto G, Dattilo G, Alfieri O, La Canna G, Generati G, Bandera F, Pellegrino M, Alfonzetti E, Labate V, Guazzi M, Cengiz B, Sahin ST, Yurdakul S, Kahraman S, Bozkurt A, Aytekin S, Borges IP, Peixoto E, Peixoto R, Peixoto R, Marcolla V, Venkateshvaran A, Sola S, Dash PK, Thapa P, Manouras A, Winter R, Brodin L, Govind SC, Mizariene V, Verseckaite R, Bieseviciene M, Karaliute R, Jonkaitiene R, Vaskelyte J, Arzanauskiene R, Janenaite J, Jurkevicius R, Rosner S, Orban M, Nadjiri J, Lesevic H, Hadamitzky M, Sonne C, Manganaro R, Carerj S, Cusma-Piccione M, Caprino A, Boretti I, Todaro M, Falanga G, Oreto L, D'angelo M, Zito C, Le Tourneau T, Cueff C, Richardson M, Hossein-Foucher C, Fayad G, Roussel J, Trochu J, Vincentelli A, Cavalli G, Muraru D, Miglioranza M, Addetia K, Veronesi F, Cucchini U, Mihaila S, Tadic M, Lang R, Badano L, Polizzi V, Pino P, Luzi G, Bellavia D, Fiorilli R, Chialastri C, Madeo A, Malouf J, Buffa V, Musumeci F, Gripari P, Tamborini G, Bottari V, Maffessanti F, Carminati C, Muratori M, Vignati C, Bartorelli A, Alamanni F, Pepi M, Polymeros S, Dimopoulos A, Spargias K, Karatasakis G, Athanasopoulos G, Pavlides G, Dagres N, Vavouranakis E, Stefanadis C, Cokkinos D, Pradel S, Mohty D, Magne J, Darodes N, Lavergne D, Damy T, Beaufort C, Aboyans V, Jaccard A, Mzoughi K, Zairi I, Jabeur M, Ben Moussa F, Ben Chaabene A, Kamoun S, Mrabet K, Fennira S, Zargouni A, Kraiem S, Jovanova S, Arnaudova-Dezjulovic F, Correia CE, Cruz I, Marques N, Fernandes M, Bento D, Moreira D, Lopes L, Azevedo O, Keramida K, Kouris N, Kostopoulos V, Psarrou G, Giannaris V, Olympios C, Marketou M, Parthenakis F, Kalyva N, Pontikoglou C, Maragkoudakis S, Zacharis E, Patrianakos A, Roufas K, Papadaki H, Vardas P, Dominguez Rodriguez F, Monivas Palomero V, Mingo Santos S, Arribas Rivero B, Cuenca Parra S, Zegri Reiriz I, Vazquez Lopez-Ibor J, Garcia-Pavia P, Szulik M, Streb W, Wozniak A, Lenarczyk R, Sliwinska A, Kalarus Z, Kukulski T, Nemes A, Domsik P, Kalapos A, Forster T, Serra W, Lumetti F, Mozzani F, Del Sante G, Ariani A, Corros C, Colunga S, Garcia-Campos A, Diaz E, Martin M, Rodriguez-Suarez M, Leon V, Fidalgo A, Moris C, De La Hera J, Kylmala MM, Rosengard-Barlund M, Groop PH, Lommi J, Bruin De- Bon H, Bilt Van Der I, Wilde A, Brink Van Den R, Teske A, Rinkel G, Bouma B, Teixeira R, Monteiro R, Garcia J, Silva A, Graca M, Baptista R, Ribeiro M, Cardim N, Goncalves L, Duszanska A, Skoczylas I, Kukulski T, Polonski L, Kalarus Z, Choi JH, Park J, Ahn J, Lee J, Ryu S, Ahn J, Kim D, Lee H, Przewlocka-Kosmala M, Mlynarczyk J, Rojek A, Mysiak A, Kosmala W, Pellissier A, Larochelle E, Krsticevic L, Baron E, Le V, Roy A, Deragon A, Cote M, Garcia D, Tournoux F, Yiangou K, Azina C, Yiangou A, Zitti M, Ioannides M, Ricci F, Dipace G, Aquilani R, Radico F, Cicchitti V, Bianco F, Miniero E, Petrini F, De Caterina R, Gallina S, Jardim Prista Monteiro R, Teixeira R, Garcia J, Baptista R, Ribeiro M, Cardim N, Goncalves L, Chung H, Kim J, Joung B, Uhm J, Pak H, Lee M, Lee K, Ragab A, Abdelwahab A, Yazeed Y, El Naggar W, Spahiu K, Spahiu E, Doko A, Liesting C, Brugts J, Kofflard M, Kitzen J, Boersma E, Levin MD, Coppola C, Piscopo G, Rea D, Maurea C, Caronna A, Capasso I, Maurea N, Azevedo O, Tadeu I, Lourenco M, Portugues J, Pereira V, Lourenco A, Nesukay E, Kovalenko V, Cherniuk S, Danylenko O, Nemes A, Domsik P, Kalapos A, Lengyel C, Varkonyi T, Orosz A, Forster T, Castro M, Abecasis J, Dores H, Madeira S, Horta E, Ribeiras R, Canada M, Andrade M, Mendes M, Morosin M, Piazza R, Leonelli V, Leiballi E, Pecoraro R, Cinello M, Dell' Angela L, Cassin M, Sinagra G, Nicolosi G, Wierzbowska-Drabik K, Hamala P, Kasprzak J, O'driscoll J, Rossato C, Gargallo-Fernandez P, Araco M, Sharma S, Sharma R, Jakus N, Baricevic Z, Ljubas Macek J, Skoric B, Skorak I, Velagic V, Separovic Hanzevacki J, Milicic D, Cikes M, Deljanin Ilic M, Ilic S, Kocic G, Pavlovic R, Stoickov V, Ilic V, Nikolic L, Generati G, Bandera F, Pellegrino M, Alfonzetti E, Labate V, Guazzi M, Labate V, Bandera F, Generati G, Pellegrino M, Donghi V, Alfonzetti E, Guazzi M, Zakarkaite D, Kramena R, Aidietiene S, Janusauskas V, Rucinskas K, Samalavicius R, Norkiene I, Speciali G, Aidietis A, Kemaloglu Oz T, Ozpamuk Karadeniz F, Akyuz S, Unal Dayi S, Esen Zencirci A, Atasoy I, Osken A, Eren M, Fazendas PR, Caldeira D, Stuart B, Cruz I, Rocha Lopes L, Almeida AR, Sousa P, Joao I, Cotrim C, Pereira H, Fazendas PR, Caldeira D, Stuart B, Cruz I, Rocha Lopes L, Almeida AR, Joao I, Cotrim C, Pereira H, Sinem Cakal S, Elif Eroglu E, Baydar O, Beytullah Cakal B, Mehmet Vefik Yazicioglu M, Mustafa Bulut M, Cihan Dundar C, Kursat Tigen K, Birol Ozkan B, Ali Metin Esen A, Yagasaki H, Kawasaki M, Tanaka R, Minatoguchi S, Houle H, Warita S, Ono K, Noda T, Watanabe S, Minatoguchi S, Cho EJ, Park SJ, Lim HJ, Chang SA, Lee SC, Park SW, Cho EJ, Park SJ, Lim HJ, Chang SA, Lee SC, Park SW, Mornos C, Cozma D, Ionac A, Mornos A, Popescu I, Ionescu G, Pescariu S, Melzer L, Faeh-Gunz A, Seifert B, Attenhofer Jost CH, Storve S, Haugen B, Dalen H, Grue J, Samstad S, Torp H, Ferrarotti L, Maggi E, Piccinino C, Sola D, Pastore F, Marino P, Ranjbar S, Karvandi M, Hassantash S, Karvandi M, Ranjbar S, Tierens S, Remory I, Bala G, Gillis K, Hernot S, Droogmans S, Cosyns B, Lahoutte T, Tran N, Poelaert J, Al-Mallah M, Alsaileek A, Nour K, Celeng C, Horvath T, Kolossvary M, Karolyi M, Panajotu A, Kitslaar P, Merkely B, Maurovich Horvat P, Aguiar Rosa S, Ramos R, Marques H, Portugal G, Pereira Da Silva T, Rio P, Afonso Nogueira M, Viveiros Monteiro A, Figueiredo L, Cruz Ferreira R. Poster session 6. Eur Heart J Cardiovasc Imaging 2014; 15:ii235-ii264. [PMCID: PMC4453635 DOI: 10.1093/ehjci/jeu271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/13/2023] Open
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Miyaji K, Shahrizaila N, Umapathi T, Chan YC, Hirata K, Yuki N. Are ERM (ezrin/radixin/moesin) proteins targets for autoantibodies in demyelinating neuropathies? Hum Immunol 2014; 75:1089-91. [DOI: 10.1016/j.humimm.2014.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 05/13/2014] [Accepted: 09/25/2014] [Indexed: 01/17/2023]
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Kitamura T, Torii S, Oka N, Horai T, Itatani K, Shibata M, Tamura T, Miyaji K. 006 * IMPACT OF ENTRY SITE ON LATE OUTCOME IN ACUTE STANFORD TYPE B AORTIC DISSECTION. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Miyaji K, Paul F, Shahrizaila N, Umapathi T, Yuki N. Complement regulatory proteins (CD46, 55 and 59) expressed on Schwann cells: immune targets in demyelinating neuropathies? J Neuroimmunol 2014; 276:172-4. [PMID: 25156074 DOI: 10.1016/j.jneuroim.2014.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 05/16/2014] [Revised: 07/28/2014] [Accepted: 08/01/2014] [Indexed: 12/20/2022]
Abstract
Given their localization and important role in regulating complement, complement regulatory proteins may act as target antigens and their antibodies as biomarkers in demyelinating neuropathies. We investigated the binding of autoantibodies to complement regulatory proteins (CD46, 55 and 59) in demyelinating diseases. In 42 acute inflammatory demyelinating polyneuropathy, 23 chronic inflammatory demyelinating polyneuropathy, 13 acute motor axonal neuropathy, 71 multiple sclerosis, and 19 neuromyelitis optica patients as well as 55 healthy controls, we were unable to detect significant titers of antibodies to CD46, CD55 and CD59. These autoantibodies are unlikely to be biomarkers in acute and chronic inflammatory demyelinating polyneuropathies.
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Affiliation(s)
- Kazuki Miyaji
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Friedemann Paul
- NeuroCure Clinical Research Center, Charité University Medicine, Berlin, Germany; Clinical and Experimental Multiple Sclerosis Research Center, Department of Neurology, Charité University Medicine, Berlin, Germany
| | - Nortina Shahrizaila
- Division of Neurology, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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Kitamura T, Torii S, Oka N, Horai T, Nakashima K, Itatani K, Koyama S, Hari Y, Araki H, Sato H, Miyaji K. Key success factors for thoracic endovascular aortic repair for non-acute Stanford type B aortic dissection. Eur J Cardiothorac Surg 2014; 46:432-7; discussion 437. [DOI: 10.1093/ejcts/ezu012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Kitamura T, Oka N, Nakashima K, Itatani K, Koyama S, Hari Y, Araki H, Miyaji K. 296 * KEY SUCCESS FACTORS FOR THORACIC ENDOVASCULAR AORTIC REPAIR FOR NON-ACUTE STANFORD TYPE B AORTIC DISSECTION. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.296] [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: 11/14/2022] Open
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Imai A, Komatsu S, Ohara T, Kamata T, Yoshida J, Miyaji K, Takewa M, Kobayashi Y, Ohe R, Kodama K. The impact of central obesity on accelerated progression of noncalcified coronary plaque assessed by coronary CT angiography: a 4-year-follow-up study. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p736] [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: 11/14/2022] Open
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Shimokawahara H, Ogawa A, Mizoguchi H, Ikemiyagi S, Miyaji K, Munemasa M, Matsubara H. The cause of lumen enlargement after balloon pulmonary angioplasty for patients with chronic thromboembolic pulmonary hypertension-intravascular ultrasound assessment. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shimokawahara H, Ogawa A, Mizoguchi H, Ikemiyagi S, Miyaji K, Munemasa M, Matsubara H. Independent predictor for severe reperfusion pulmonary injury after balloon pulmonary angioplasty in patients with chronic thromboembolic pulmonary hypertension. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ogawa A, Miyaji K, Matsubara H. Clinical prediction rule for identifying patients with pulmonary veno-occlusive disease/pulmonary capillary hemangiomatosis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p314] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Miyaji K, Yurimoto T, Saito A, Yasueda H, Takase Y, Shimakura H, Okamoto N, Kiuchi A, Saito S, Sakaguchi M. Analysis of conformational and sequential IgE epitopes on the major allergen Cry j 2 of Japanese cedar (Cryptomeria japonica) pollen in humans by using monoclonal antibodies for Cry j 2. J Clin Immunol 2013; 33:977-83. [PMID: 23504147 DOI: 10.1007/s10875-013-9880-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 02/25/2013] [Indexed: 11/24/2022]
Abstract
PURPOSE Japanese cedar (Cryptomeria japonica; CJ) pollinosis is a type I allergy induced by CJ pollen, and Cry j 2 is one of the major allergens in this pollen. In a previous study, we analyzed IgE epitopes on Cry j 2 in humans by using synthetic peptides. The main purpose of this study was to identify B-cell epitopes on Cry j 2 in patients with CJ pollinosis by using monoclonal antibodies (mAbs) for Cry j 2. METHODS We used ELISA with mAbs for the epitope analysis. Sera samples were collected from 80 patients with CJ pollinosis, and allergenic epitopes for mAbs and human IgE were identified using ELISA with synthetic peptides. The importance of the epitopes for human IgE was analyzed using an inhibition ELISA. RESULTS Four independent epitopes (epitope #1, #2, #3, and #4) were identified on Cry j 2 with the use of mAbs. Epitope #3 and #4, corresponding to peptides No. 25 and No. 33, respectively, were newly determined as epitopes for mAbs and human IgE. Inhibition ELISA showed that not only epitope #2 (sequential) but epitope #1 (conformational) may play an important role in the CJ pollinosis. CONCLUSIONS Our results revealed 4 epitopes, including two new ones, on Cry j 2. We also found that inhibition ELISA with appropriate mAbs could be a viable method of evaluating the importance of the conformational and sequential epitopes for human IgE. These results are beneficial for the development of safer and more efficient therapeutic strategies for treating CJ pollinosis.
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Affiliation(s)
- Kazuki Miyaji
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
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Miyaji K, Kasuga K, Takahashi F. Psychological effects of human interaction in mahjong: A heart-rate study. Int J Psychophysiol 2012. [DOI: 10.1016/j.ijpsycho.2012.06.056] [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: 11/28/2022]
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Miyaji K, Ohta M, Nagao K, Ohtani N, Bannai M. The seasonal fluctuation of plasma amino acids in aquarium-maintained bottlenose dolphins (Tursiops truncatus). J Vet Med Sci 2012; 74:871-7. [PMID: 22333514 DOI: 10.1292/jvms.11-0492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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] Open
Abstract
Although there has been extensive research on plasma amino acid profiles of mammals, there is currently a lack of information on seasonal differences in the concentrations of plasma amino acids specifically in cetaceans. The present study examined the response of the plasma amino acids to seasonal changes in the culture environment after controlling for the effect of sex and age. Significant seasonal changes in plasma carnosine (P=0.012), cystine (P=0.0014), isoleucine (P=0.0042), methionine (P=0.002), ornithine (P=0.0096), and taurine (P=0.032) were observed. These amino acids were mainly related to capacity for exercise, ammonia detoxification, thermoregulation, and osmoregulation. We proposed that optimizing plasma amino acids levels by supplementation of amino acids should be of considerable benefit for aquarium-maintained bottlenose dolphins. This study constitutes a first step towards improving our understanding of the metabolism of aquarium-maintained bottlenose dolphins. We also revealed that the ratio of tryptophan to large neutral amino acids significantly declined (P=0.0076), suggesting reduction in serotonin synthesis in winter and autumn. Although further studies are needed, this finding implied that bottlenose dolphins could produce behavioral changes seasonally by the alteration of serotonin activity. To better understand the metabolic machinery for amino acids that facilitate the adaptation of marine mammals to their environments, it is essential to continue monitoring of and further investigations into relationships between plasma amino acids and specific environmental factors.
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Affiliation(s)
- Kazuki Miyaji
- Azabu University School of Veterinary Medicine, Sagamihara, Kanagawa 252-5201, Japan
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Miyaji K, Suzuki A, Shimakura H, Takase Y, Kiuchi A, Fujimura M, Kurita G, Tsujimoto H, Sakaguchi M. Large-scale survey of adverse reactions to canine non-rabies combined vaccines in Japan. Vet Immunol Immunopathol 2012; 145:447-52. [PMID: 22264736 PMCID: PMC7112591 DOI: 10.1016/j.vetimm.2011.12.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 12/27/2011] [Accepted: 12/29/2011] [Indexed: 11/29/2022]
Abstract
Canine non-rabies combined vaccines are widely used to protect animals from infectious agents, and also play an important role in public health. We performed a large-scale survey to investigate vaccine-associated adverse events (VAAEs), including anaphylaxis, in Japan by distributing questionnaires on VAAEs to veterinary hospitals from April 1, 2006 through May 31, 2007. Valid responses were obtained for 57,300 vaccinated dogs at 573 animal hospitals; we obtained VAAEs information for last 100 vaccinated dogs in each veterinary hospital. We found that of the 57,300, 359 dogs showed VAAEs. Of the 359 dogs, death was observed in 1, anaphylaxis in 41, dermatological signs in 244, gastrointestinal signs in 160, and other signs in 106. Onset of VAAEs was mostly observed within 12 h after vaccination (n = 299, 83.3%). In this study, anaphylaxis events occurred within 60 min after vaccination, and about half of these events occurred within 5 min (n = 19, 46.3%). Furthermore, where anaphylaxis was reported, additional information to support the diagnosis was obtained by reinvestigation. Our resurvey of dogs with anaphylaxis yielded responses on 31 dogs; 27 of these demonstrated collapse (87.1%), 24 demonstrated cyanosis (77.4%), and both signs occurred in 22 (71.0%). Higher rates of animal VAAEs, anaphylaxis, and death were found in Japan than in other countries. Further investigations, including survey studies, will be necessary to elucidate the interaction between death and vaccination and the risk factors for VAAEs, and thus develop safer vaccines. Moreover, it may also be necessary to continually update the data of VAAEs.
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Affiliation(s)
- Kazuki Miyaji
- Department of Veterinary Microbiology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 252-5201, Japan
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Miyaji K, Itatani K, Inoue N, Ishii M. Half-turned truncal switch operation for transposition of great arteries with ventricular septal defect and pulmonary regurgitation. Interact Cardiovasc Thorac Surg 2011; 13:217-9. [DOI: 10.1510/icvts.2010.260984] [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: 11/06/2022] Open
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Miyaji K, Nagao K, Bannai M, Asakawa H, Kohyama K, Ohtsu D, Terasawa F, Ito S, Iwao H, Ohtani N, Ohta M. Characteristic metabolism of free amino acids in cetacean plasma: cluster analysis and comparison with mice. PLoS One 2010; 5:e13808. [PMID: 21072195 PMCID: PMC2970564 DOI: 10.1371/journal.pone.0013808] [Citation(s) in RCA: 10] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Accepted: 09/28/2010] [Indexed: 11/25/2022] Open
Abstract
From an evolutionary perspective, the ancestors of cetaceans first lived in terrestrial environments prior to adapting to aquatic environments. Whereas anatomical and morphological adaptations to aquatic environments have been well studied, few studies have focused on physiological changes. We focused on plasma amino acid concentrations (aminograms) since they show distinct patterns under various physiological conditions. Plasma and urine aminograms were obtained from bottlenose dolphins, pacific white-sided dolphins, Risso's dolphins, false-killer whales and C57BL/6J and ICR mice. Hierarchical cluster analyses were employed to uncover a multitude of amino acid relationships among different species, which can help us understand the complex interrelations comprising metabolic adaptations. The cetacean aminograms formed a cluster that was markedly distinguishable from the mouse cluster, indicating that cetaceans and terrestrial mammals have quite different metabolic machinery for amino acids. Levels of carnosine and 3-methylhistidine, both of which are antioxidants, were substantially higher in cetaceans. Urea was markedly elevated in cetaceans, whereas the level of urea cycle-related amino acids was lower. Because diving mammals must cope with high rates of reactive oxygen species generation due to alterations in apnea/reoxygenation and ischemia-reperfusion processes, high concentrations of antioxidative amino acids are advantageous. Moreover, shifting the set point of urea cycle may be an adaption used for body water conservation in the hyperosmotic sea water environment, because urea functions as a major blood osmolyte. Furthermore, since dolphins are kept in many aquariums for observation, the evaluation of these aminograms may provide useful diagnostic indices for the assessment of cetacean health in artificial environments in the future.
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Affiliation(s)
- Kazuki Miyaji
- Department of Animal Science and Biotechnology, Azabu University, Sagamihara, Japan
| | - Kenji Nagao
- Institute of Life Sciences, Ajinomoto Co. Inc., Kawasaki, Japan
| | - Makoto Bannai
- Institute of Life Sciences, Ajinomoto Co. Inc., Kawasaki, Japan
- * E-mail:
| | - Hiroshi Asakawa
- Department of Animal Care, Shimoda Floating Aquarium, Shimoda, Japan
| | - Kaoru Kohyama
- Department of Animal Care and Management, Izu-Mito Sea Paradise, Numazu, Japan
| | - Dai Ohtsu
- Aqua Resorts, Yokohama-Hakkeijima Sea Paradise, Yokohama, Japan
| | | | - Shu Ito
- Veterinary Hospital, Adventure World, Nishimuro, Japan
| | - Hajime Iwao
- Exhibition Division, Niigata City Aquarium Marinepia Nihonkai, Niigata, Japan
| | - Nobuyo Ohtani
- Department of Animal Science and Biotechnology, Azabu University, Sagamihara, Japan
| | - Mitsuaki Ohta
- Department of Animal Science and Biotechnology, Azabu University, Sagamihara, Japan
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Yonezawa S, Xiao J, Odamaki T, Ishida T, Miyaji K, Yamada A, Yaeshima T, Iwatsuki K. Improved growth of bifidobacteria by cocultivation with Lactococcus lactis subspecies lactis. J Dairy Sci 2010; 93:1815-23. [DOI: 10.3168/jds.2009-2708] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2009] [Accepted: 01/20/2010] [Indexed: 11/19/2022]
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Miyaji K, Kaneko S, Ishikawa H, Aoyagi T, Hayakawa K, Hata M, Oohashi M, Izawa A, Murai M. CREATINE KINASE ISOFORMS IN THE SEMINAL PLASMA AND THE PURIFIED HUMAN SPERM. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/01485010151094038] [Citation(s) in RCA: 2] [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: 10/17/2022]
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Kawai Y, Hisamatsu K, Matsubara H, Dan K, Akagi S, Miyaji K, Munemasa M, Fujimoto Y, Kusano KF, Ohe T. Intravenous administration of nicorandil immediately before percutaneous coronary intervention can prevent slow coronary flow phenomenon. Eur Heart J 2008; 30:765-72. [DOI: 10.1093/eurheartj/ehp077] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Miyaji K, Miyamoto T, Kohira S, Nakashima K, Inoue N, Sato H, Ohara K. Miniaturized cardiopulmonary bypass system in neonates and small infants. Interact Cardiovasc Thorac Surg 2008; 7:75-8. [DOI: 10.1510/icvts.2007.163659] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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41
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Xiao JZ, Kondo S, Yanagisawa N, Takahashi N, Odamaki T, Iwabuchi N, Miyaji K, Iwatsuki K, Togashi H, Enomoto K, Enomoto T. Probiotics in the treatment of Japanese cedar pollinosis: a double-blind placebo-controlled trial. Clin Exp Allergy 2007; 36:1425-35. [PMID: 17083353 DOI: 10.1111/j.1365-2222.2006.02575.x] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Probiotic bacteria may be effective in the treatment of allergic inflammation and food allergy, but efficacy and underlying mechanisms remain unclear. OBJECTIVE The present study investigated the effects of probiotic strain Bifidobacterium longum BB536 in the treatment of Japanese cedar pollinosis (JCPsis). METHODS In a randomized, double-blind, placebo-controlled trial, 44 JCPsis subjects received BB536 or placebo for 13 weeks during the pollen season. Subjective symptoms and self-care measures were recorded daily and blood samples were taken before and during intervention to measure blood levels of parameters related to JCPsis. RESULTS BB536 intake was associated with a significant reduction in number of subjects prematurely terminated due to severe symptoms and pollinosis medication (P=0.0057 vs. placebo group). Comparison of subjective symptom scores indicated significant decreases in rhinorrhea, nasal blockage and composite scores in the BB536 group compared with the placebo group. Comparison of medical scores showed marked improvements in all symptoms on BB536 intake. A T-helper type 2 (Th2)-skewed immune response occurring along with pollen dispersion was observed. BB536 significantly suppressed increases in plasma thymus- and activation-regulated chemokine and tended to suppress elevations of Japanese cedar pollen (JCP)-specific IgE. CONCLUSION These results suggest the efficacy of BB536 in relieving JCPsis symptoms, probably through the modulation of Th2-skewed immune response.
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Affiliation(s)
- J-Z Xiao
- Food Research and Development Laboratory, Morinaga Milk Industry Co Ltd, Zama, Japan.
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42
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Sakai K, Yada K, Sakabe G, Tani O, Miyaji K, Nakamura M, Takehara K. Serological and virological studies of Newcastle disease and avian influenza in slaughter-age ostriches (Struthio camelus) in Japan. J Vet Med Sci 2007; 68:491-4. [PMID: 16757893 DOI: 10.1292/jvms.68.491] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [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: 11/22/2022] Open
Abstract
Serum samples from 191 ostriches (Struthio camelus) in Japan were tested for antibodies to Newcastle disease virus (NDV) and avian influenza virus (AIV). Twenty-two (12%) contained NDV-specific neutralizing antibodies by a virus-neutralization (VN) test without vaccination. Antibodies to AIV were not detected in the any sera by an agar gel precipitation test. Seven serum samples that had vaccinated with live NDV by eye drop were all positive by the VN test at 1 month post vaccination. A haemagglutination inhibition (HI) test for NDV seemed not to be suitable for ostriches because of non-specific agglutination of chicken red blood cells. No haemagglutinating viruses were isolated. This is the first report on detection of antibodies against NDV in ostriches in Japan.
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Affiliation(s)
- Kouji Sakai
- Laboratory of Zoonoses, School of Veterinary Medicine and Animal Sciences, Kitasato University, Aomori, Japan
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43
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Takahashi N, Kitazawa H, Iwabuchi N, Xiao JZ, Miyaji K, Iwatsuki K, Saito T. Immunostimulatory oligodeoxynucleotide from Bifidobacterium longum suppresses Th2 immune responses in a murine model. Clin Exp Immunol 2006; 145:130-8. [PMID: 16792683 PMCID: PMC1941999 DOI: 10.1111/j.1365-2249.2006.03111.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We have reported previously that novel immunostimulatory sequence (ISS) oligodeoxynucleotide (ODN) BL07S from a probiotic strain of Bifidobacterium longum inhibited immunoglobulin (Ig) E production in vitro. However, whether ISS-ODNs from probiotics regulate T helper type 2 (Th2)-polarized immune reactions in vivo remains unclear. To evaluate the inhibitory effects of ODN BL07S on type I allergic response, BALB/c mice were injected with or without ODN BL07S in the presence of ovalbumin (OVA) on days 0 and 14. Serum Ig levels (IgE, IgG1 and IgG2a) and cytokine levels (interferon (IFN)-gamma, interleukin (IL)-12, IL-4, IL-5, IL-10 and IL-13) were investigated in splenocyte cultures from days 14-28. Production of OVA-specific and total IgE were significantly suppressed by administration of ODN BL07S, but not by ODN BL06S, a non-ISS-ODN. Compared to controls, ODN BL07S induced significantly lower levels of Th2 cytokines (IL-4 and IL-5) in splenocyte cultures, and significantly higher levels of serum OVA-specific IgG2a. These effects of ODN BL07S on modulation of Th2 immune response were dose-dependent. The present results demonstrate that ODN BL07S from genomic DNA of B. longum BB536 prevents antigen-induced Th2 immune responses in vivo, suggesting that ISS-ODNs from probiotics might be useful in preventing allergic disease.
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Affiliation(s)
- N Takahashi
- Food Research and Development Laboratory, Morinaga Milk Industry Co. Ltd, Zama, Japan.
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44
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Tada H, Ito S, Shinbo G, Naito S, Yamada M, Miyaji K, Hashimoto T, Oshima S, Taniguchi K, Nogami A. 961 Diagnostic value of plasma levels of brain natriuretic peptide in idiopathic ventricular arrhythmias. Europace 2005. [DOI: 10.1016/eupace/7.supplement_1.231-a] [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: 10/19/2022] Open
Affiliation(s)
- H. Tada
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - S. Ito
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - G. Shinbo
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - S. Naito
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - M. Yamada
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - K. Miyaji
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - T. Hashimoto
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - S. Oshima
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - K. Taniguchi
- Gunma Prefectural Cardiovasc CTR, Division of Cardiology, Gunma Prefecture, Japan
| | - A. Nogami
- Gunma Rosai Hospital, Division of Cardiology, Yokohama, Japan
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45
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Noma Y, Minetomatsu K, Falandysz J, Flisak M, Swietojańska A, Jecek L, Miyaji K, Sakai S. By-side impurities in chloronaphthalene mixtures of the Halowax series: all 135 chlorodibenzofurans. J Environ Sci Health A Tox Hazard Subst Environ Eng 2005; 40:63-76. [PMID: 15663300 DOI: 10.1081/ese-200033569] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
One hundred twenty five congeners of CDF off 135 theoretically possible were quantified in seven of various type Halowax formulations but still 45 co-eluted under the gas chromatographic conditions applied. The total CDFs concentration of Halowax formulations was between 250 and 16,000 ng/g. The compositional profile of CDF homologue groups of the Halowaxes frequently followed a degree of chlorination of the parent chloronaphthalene mixture and an exception was Halowax 1031. The compositional profile of many isomers of trichlorodibenzofuran, found and often highly abundant, was characteristic to majority of the formulations examined, and each of them demonstrated to have its own pattern but mysterious to explain remained Halowax 1031. In term of dioxin-like toxicity the most potent due to CDFs content was Halowax 1014 with 210 ng TCDD TEQ/g and next was Halowax 1013 with 36 ng TEQ/g, while between 1.3 and 5.0 ng TEQ/g were for other formulations. A tentative estimation made implies that the net total CDFs production due to manufacture of the technical CNs in the XX century could reach an amount between 420 kg (median) and 825 kg (mean), and for most toxic dioxin-like congeners between 705 g (median) and 5700 g (mean) TCDD TEQ, while for the worst case of Halowax 1014 alone scenario it could be 750 kg of the total CDFs and 16 kg of TCDD TEQ for most toxic congeners.
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Affiliation(s)
- Y Noma
- National Institute for Environmental Studies, Tsukuba, Japan.
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46
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Noma Y, Minetomatsu K, Falandysz J, Swietojańska A, Flisak M, Miyaji K, Sakai S. By-side impurities in chloronaphthalene mixtures of the Halowax series: all 75 chlorodibenzo-p-dioxins. J Environ Sci Health A Tox Hazard Subst Environ Eng 2005; 40:77-89. [PMID: 15663301 DOI: 10.1081/ese-200033581] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A by-side chlorodibenzo-p-dioxins (CDDs) has been identified as impurity in concentration between 1.5 and 370 ng/g in the Halowax formulations of all type. Halowax 1014 was relatively richer in number of CDD congeners detected when compared to six other CN formulations examined. Amongst the mono- to tri-CDDs, the most prevalent in the Halowaxes were 1- and 2-MoCDD, and especially they were abundant in the formulations of a lower than a higher degree of chlorination. Amongst the tetra- to octaCDD only 1,2,3,4-/1,2,4,6-/1,2,4,9-/ 1,2,3,8-TeCDD, 1,2,3,4,6,7,8-HpCDD and OcCDD were found in all the Halowaxes, and 1,2,3,4,6,7,9-HpCDD remained undetected only in Halowax 1099 and 1013, while most of TeCDDs, PeCDD, and HxCDDs were absent in a majority of the formulations examined. The compositional profile of 1,2,3,4-/1,2,4,6-/1,2,4,9,-/1,2,3,8-TeCDD and OcCDD congeners found in the Halowaxes seem to indicate, that after an initial in situ formation of mono- and di-CDDs during CNs synthesis, a further increase of reaction time, temperature, and pressure can lead to successive chlorination of the already established chlorodibenzo-p-dioxin molecule, and so to enrichment in 1,2,3,4-/ 1,2,4,6-/1,2,4,9,-/1,2,3,8-TeCDD but also OcCDD content for most of the final products obtained. Nevertheless, also due to the co-synthesis of chlorophenols in the Halowaxes, their condensation reactions could also contribute to the formation of CDDs. In term of dioxin-like toxicity the most potent due to CDDs content was Halowax 1014 with 0.95 ng TCDD TEQ/g, and between 0.00068 and 0.058 ng/g were for other formulations. A rough estimation made implies that a net CDDs production due to manufacture of the technical CNs in the XX century could reach an amount between 3.0 and 12.6 kg, while for most toxic dioxin-like constituents between 5.25 and 24 g TCDD TEQ, For the worst case scenario and involvement of Halowax 1014 only the net total CDDs production was estimated to be 1.5 kg, and for highly-toxic congeners 71 g TCDD TEQ. All these figures are much lower when compared to co-production of CDFs.
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Affiliation(s)
- Y Noma
- National Institute for Environmental Studies, Tsukuba, Japan.
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47
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Noma Y, Ishikawa Y, Falandysz J, Jecek L, Gulkowska A, Miyaji K, Sakai S. By-side impurities in chloronaphthalene mixtures of the Halowax series: all 209 chlorobiphenyls. J Environ Sci Health A Tox Hazard Subst Environ Eng 2004; 39:2035-2058. [PMID: 15332667 DOI: 10.1081/ese-120039373] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
202 congeners of chlorobiphenyl (CB) with 109 single-resolved compounds and 93 co-eluting, which represented from mono- to deca-CB were quantified as by-side impurities in all seven and of various type the technical chloronaphthalene (CN) formulations of the Halowax series. IUPAC No. 104, 145, 159, 169, 184, 186, and 188 were undetected (<0.05-<0.7 ng/g). The total CBs content of the Halowax formulations ranged between 220 and 640,000 ng/g, and lower chlorinated Halowaxes 1031 (27% Cl) and 1000 (35% Cl) were two to three orders of magnitude more contaminated with CBs than higher chlorinated Halowax 1001, 1099, 1013, 1014, and 1051 (49-70% Cl). The profile of CB homologue groups of the Halowaxes changed and followed somehow a degree of chlorination of the parent CN mixture. For Halowax 1031 and 1000, a decreasing trend in proportion from mono- to deca-CB was evident, while for Halowax 1001, 1099, 1013, 1014, and 1051 the relative proportions between the CB homologue groups varied somehow. Evidently content of lower chlorinated mono- and di-CBs highly decreased and steadily increased tri- to octa-CBs and they become dominating homologues in Halowax formulations in parallel with an increase of the content of higher molecular weight CN constituents, respectively. Among planar non- and mono-ortho CBs, total concentrations in Halowax formulations were detected in the range of 2.0-2600 ng/g, and only 3,3',4,4',5,5'-HxCB (no. 169) was undetected (<0.05ng/g). Detection of by-side CBs in technical Halowaxes demonstrate clearly that those formulations apart from a massive introduction of dioxin-like CNs become in the past also an early source of environmental pollution with CBs, which proceeded for around 20-30 years use of original CB formulations.
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Affiliation(s)
- Y Noma
- National Institute for Environmental Studies, Tsukuba, Japan.
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48
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Miyaji K, Nakagawa Y, Matsumoto K, Yoshida H, Morikawa H, Hongou Y, Arisaka Y, Kojima H, Inoue T, Hirata I, Katsu K, Akao Y. Overexpression of a DEAD box/RNA helicase protein, rck/p54, in human hepatocytes from patients with hepatitis C virus-related chronic hepatitis and its implication in hepatocellular carcinogenesis. J Viral Hepat 2003; 10:241-8. [PMID: 12823589 DOI: 10.1046/j.1365-2893.2003.00447.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [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: 12/09/2022]
Abstract
Hepatitis C virus (HCV) infection is the most common cause of chronic hepatitis, which frequently progresses to hepatocellular carcinoma. The pathogenesis of its persistent infection and tumour progression has not been fully characterized yet. The RCK gene was previously cloned at the breakpoint of the t(11;14)(q23;q32) chromosome translocation observed in human B-cell lymphoma cell line RC-K8. The RCK protein, rck/p54, which is a 54-kDa cytoplasmic protein belonging to the DEAD box/RNA helicase family, is considered to facilitate the translation of mRNA(s) of genes for cell proliferation and malignant transformation not only in B-cell lymphomas having the t(11;14) translocation but also in other solid tumours. The aim of this work was to examine the involvement of rck/p54 in carcinogenesis of hepatocellular carcinoma from HCV-related chronic hepatitis. We examined the expression of rck/p54 in 29 cases of HCV-related chronic hepatitis and eight cases of hepatocellular carcinoma by immunohistochemistry and Western blot analysis. Twenty-six of 29 cases with HCV-related chronic hepatitis and all cases with hepatocellular carcinoma tested overexpressed rck/p54 protein. The expression of rck/p54 was lowered by treatment with IFN-alpha in two cases who showed the decrease in HCV RNA levels. These findings suggest that rck/p54 protein is possibly involved in the replication of HCV genomes in hepatocytes and in tumourigenesis of hepatocellular carcinomas.
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Affiliation(s)
- K Miyaji
- The Second Department of Internal Medicine, Daigaku-cho, Takatsuki, Osaka, Japan
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49
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Xiao JZ, Kondo S, Takahashi N, Miyaji K, Oshida K, Hiramatsu A, Iwatsuki K, Kokubo S, Hosono A. Effects of milk products fermented by Bifidobacterium longum on blood lipids in rats and healthy adult male volunteers. J Dairy Sci 2003; 86:2452-61. [PMID: 12906063 DOI: 10.3168/jds.s0022-0302(03)73839-9] [Citation(s) in RCA: 236] [Impact Index Per Article: 11.2] [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: 11/19/2022]
Abstract
The effects of milk products fermented by Bifidobacterium longum strain BL1, a probiotic strain, on blood lipids in rats and humans were studied. Rats were fed a cholesterol-enriched experimental diet, supplemented with lyophilized powders of 1) acid milk (control), 2) milk fermented with a mixed culture of ordinary yogurt starters composed of Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus (SL), and 3) bifidobacterium milk fermented with the probiotic B. longum strain BL1, respectively. The bifidobacterium milk feeding brought about significant lowering of the serum concentrations of total cholesterol, low-density lipoprotein cholesterol, and triglycerides, in comparison with the control, while no change in high-density lipoprotein cholesterol concentration was observed. On the other hand, supplementation with SL milk resulted in only slight, nonsignificant decreases in serum lipid concentrations in comparison with the control. In the human study, 32 subjects with serum total cholesterol ranging from 220 to 280 mg/dl were randomly assigned to two treatments: 1) intake of a low-fat drinking yogurt prepared with ordinary yogurt starters composed of S. thermophilus and L. delbrueckii subsp. bulgaricus (P-group) and 2) intake of a low-fat drinking yogurt prepared with the two ordinary yogurt starters plus B. longum strain BL1 (B-group). After intake for 4 wk at 3 x 100 ml/day, reduction of serum total cholesterol was observed in approximately half of the B-group subjects; a particularly significant decrease in serum total cholesterol was found among subjects with moderate hypercholesterolemia (serum total cholesterol > 240 mg/dl). However, the serum lipid concentrations in the P-group subjects were almost stable during the experimental periods. The present results indicate the potential of the probiotic B. longum strain BL1 in serum lipid improvement.
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Affiliation(s)
- J Z Xiao
- Food Research and Development Laboratory, Morinaga Milk Industry Co., Ltd., Zama 228-8583, Japan.
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Abstract
We successfully resected vegetation of infectious endocarditis in right ventricular outflow tract using a video-assisted cardioscopy without ventriculotomy. Video-assisted cardioscopy provided clear and precise visualization of vegetation on the anterior wall of right ventricular outflow. This technique is effective to visualize remote intra-cardiac structures, and to facilitate repairs, while avoiding the need for extended cardiac incisions.
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Affiliation(s)
- K Miyaji
- Department of Cardiothoracic Surgery, University of Tokyo Hospital, Japan.
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