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Yabe Y, Takemura T, Hattori S, Ishikawa K, Aizawa T. Comparative Gene-Expression Analysis of the Ligamentum Flavum of Patients with Lumbar Spinal Canal Stenosis: Comparison between the Dural and Dorsal Sides of the Thickened Ligamentum Flavum. TOHOKU J EXP MED 2024:2024.J015. [PMID: 38355112 DOI: 10.1620/tjem.2024.j015] [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: 02/16/2024]
Affiliation(s)
- Yutaka Yabe
- Department of Orthopaedic Surgery, National Hospital Organization Sendai Nishitaga Hospital
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Taro Takemura
- Nanotechnology Innovation Station, National Institute for Materials Science
| | - Shinya Hattori
- Nanotechnology Innovation Station, National Institute for Materials Science
| | - Keisuke Ishikawa
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Toshimi Aizawa
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
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Sato S, Yamakawa H, Takemura T, Nakamura T, Nishizawa T, Oba T, Kawabe R, Akasaka K, Amano M, Matsushima H. Evaluation of large airway specimens obtained by transbronchial lung cryobiopsy in diffuse parenchymal lung diseases. BMC Pulm Med 2022; 22:384. [PMID: 36258160 PMCID: PMC9578247 DOI: 10.1186/s12890-022-02186-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 10/04/2022] [Indexed: 11/26/2022] Open
Abstract
Background The difference in diagnostic yield between surgical lung biopsy and transbronchial lung cryobiopsy (TBLC) in diffuse parenchymal lung diseases (DPLD) has been reported to be due to differences in the rate of interpathologist agreement, specimen size, and specimen adequacy. In TBLC, the specimens containing large airway components are generally believed as inadequate specimens for histological evaluation, but the detailed characteristics of TBLC specimens including the large airway and the impact on histological diagnostic rates of DPLD have not been investigated. Methods We retrospectively reviewed the specimen characteristics of patients with DPLD who underwent TBLC. Results Between February 2018 and January 2020, 74 patients and 177 specimens were included. There were 85 (48.0%) large airway specimens (LAS) that contained bronchial gland or bronchial cartilage. The ideal specimen ratio was significantly lower in the LAS-positive group than that in the LAS-negative group (5.8% vs. 45.6%), and the proportion of bronchioles, alveoli, and perilobular area were similarly lower in the LAS-positive group. The presence of traction bronchiectasis and diaphragm overlap sign on high-resolution computed tomography (HRCT) were also significantly higher in the LAS-positive group than those in the LAS-negative group. We observed a statistically significant trend in histological diagnostic yield (40.7% in LAS positive group; 60.8% in LAS positive and negative group; 91.6% in LAS negative group) (Cochran-Armitage trend test). Conclusion LAS is a specimen often collected in TBLC and contains a low percentage of bronchioles, alveoli, and perilobular area. Since the histological diagnostic yield tends to be higher in cases that do not contain LAS, it may be important to determine the biopsy site that reduces the frequency of LAS collection by referring to the HRCT findings in TBLC.
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Affiliation(s)
- S Sato
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan.
| | - H Yamakawa
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
| | - T Takemura
- Department of Pathology, Kanagawa Cardiovascular and Respiratory Center, Kanagawa, Japan
| | - T Nakamura
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
| | - T Nishizawa
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
| | - T Oba
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
| | - R Kawabe
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
| | - K Akasaka
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
| | - M Amano
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
| | - H Matsushima
- Department of Respiratory Medicine, Saitama Red Cross Hospital, 1-5 Shintoshin, Chuo-ku, Saitama, 330-8553, Japan
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Yabe Y, Hagiwara Y, Tsuchiya M, Minowa T, Takemura T, Hattori S, Yoshida S, Onoki T, Ishikawa K. Comparative proteome analysis of the ligamentum flavum of patients with lumbar spinal canal stenosis. JOR Spine 2022; 5:e1210. [PMID: 36601375 PMCID: PMC9799084 DOI: 10.1002/jsp2.1210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/03/2022] [Accepted: 05/24/2022] [Indexed: 01/07/2023] Open
Abstract
Background Thickening of the ligamentum flavum is considered to be the main factor for lumbar spinal canal stenosis (LSCS). Although some mechanisms have been speculated in the thickening of the ligamentum flavum, there are only a few comprehensive approaches to investigate its pathology. The objective of this study was to investigate the pathology of thickened ligamentum flavum in patients with LSCS based on protein expression levels using shotgun proteome analysis. Methods Ligamentum flavum samples were collected from four patients with LSCS (LSCS group) and four patients with lumbar disc herniation (LDH) as controls (LDH group). Protein mixtures were digested and analyzed by liquid chromatography/mass spectrometry analysis. To compare protein expression levels between the LSCS and LDH groups, the mean Mascot score was compared. Biological processes were assessed using Gene Ontology analysis. Results A total of 1151 proteins were identified in some samples of ligamentum flavum. Among these, 145 proteins were detected only in the LSCS group, 315 in the LDH group, and 691 in both groups. The demonstrated biological processes occurring in the LSCS group included: extracellular matrix organization, regulation of peptidase activity, extracellular matrix disassembly, and negative regulation of cell growth. Proteins related to fibrosis, chondrometaplasia, and amyloid deposition were found highly expressed in the LSCS group compared with those in the LDH group. Conclusions Tissue repair via fibrosis, chondrometaplasia, and amyloid deposits may be important pathologies that occur in the thickened ligamentum flavum of patients with LSCS.
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Affiliation(s)
- Yutaka Yabe
- Department of Orthopaedic SurgeryGraduate School of Medicine, Tohoku UniversitySendaiJapan
| | - Yoshihiro Hagiwara
- Department of Orthopaedic SurgeryGraduate School of Medicine, Tohoku UniversitySendaiJapan
| | - Masahiro Tsuchiya
- Department of Nursing, Faculty of Health ScienceTohoku Fukushi UniversitySendaiJapan
| | - Takashi Minowa
- Nanotechnology Innovation StationNational Institute for Materials ScienceTsukubaJapan
| | - Taro Takemura
- Nanotechnology Innovation StationNational Institute for Materials ScienceTsukubaJapan
| | - Shinya Hattori
- Nanotechnology Innovation StationNational Institute for Materials ScienceTsukubaJapan
| | - Shinichirou Yoshida
- Department of Orthopaedic SurgeryGraduate School of Medicine, Tohoku UniversitySendaiJapan
| | - Takahiro Onoki
- Department of Orthopaedic SurgeryGraduate School of Medicine, Tohoku UniversitySendaiJapan
| | - Keisuke Ishikawa
- Department of Orthopaedic SurgeryGraduate School of Medicine, Tohoku UniversitySendaiJapan
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Nguyen NT, Liu M, Katayama H, Takemura T, Kasuga I. Association of the colistin resistance gene mcr-1 with faecal pollution in water environments in Hanoi, Vietnam. Lett Appl Microbiol 2020; 72:275-282. [PMID: 33099779 DOI: 10.1111/lam.13421] [Citation(s) in RCA: 4] [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] [Received: 08/03/2020] [Revised: 09/30/2020] [Accepted: 10/20/2020] [Indexed: 11/29/2022]
Abstract
Colistin is one of the antibiotics of last resort for human health. However, the dissemination of the plasmid-mediated colistin resistance gene mcr-1 is of great concern globally. In the One Health framework, the environment is an important component for managing antimicrobial resistance. However, little information is available concerning the prevalence of mcr-1 in water environments. We aimed to reveal the prevalence of mcr-1 in different water environments in Hanoi, Vietnam. Quantitative PCR was applied to detect mcr-1 in four urban drainages receiving untreated domestic wastewater, three rivers, five lakes and two groundwater samples. Urban drainages contained higher concentrations of mcr-1, suggesting that urban residents carry the gene. The class 1 integron-integrase gene was identified as a good surrogate of antibiotic resistance genes including mcr-1. A significant correlation was found between the levels of mcr-1 and the human-specific cross-assembly phage, which is an indicator of human faecal pollution. These results indicated that the primary source of mcr-1 in urban water environments is human faeces, which is consistent with the fact that most domestic wastewater is untreated in Hanoi. The control of untreated wastewater is critical for alleviating the spread of mcr-1 in water environments in Vietnam.
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Affiliation(s)
- N T Nguyen
- Vietnam Research Station, Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, Hanoi, Vietnam.,Master's Program in Environmental Engineering, VNU Vietnam Japan University, Hanoi, Vietnam
| | - M Liu
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - H Katayama
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - T Takemura
- Vietnam Research Station, Center for Infectious Disease Research in Asia and Africa, Institute of Tropical Medicine, Nagasaki University, Hanoi, Vietnam
| | - I Kasuga
- Master's Program in Environmental Engineering, VNU Vietnam Japan University, Hanoi, Vietnam.,Department of Urban Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
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Watabe K, Kato Y, Sakuma M, Murata M, Niida-Kawaguchi M, Takemura T, Hanagata N, Tada M, Kakita A, Shibata N. Praja1 RING-finger E3 ubiquitin ligase suppresses neuronal cytoplasmic TDP-43 aggregate formation. Neuropathology 2020; 40:570-586. [PMID: 32686212 PMCID: PMC7818255 DOI: 10.1111/neup.12694] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 01/07/2023]
Abstract
Transactivation response DNA-binding protein of 43 kDa (TDP-43) is a major constituent of cytoplasmic aggregates in neuronal and glial cells in cases of amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD). We have previously shown neuronal cytoplasmic aggregate formation induced by recombinant adenoviruses expressing human wild-type and C-terminal fragment (CTF) TDP-43 under the condition of proteasome inhibition in vitro and in vivo. In the present study, we demonstrated that the formation of the adenoviral TDP-43 aggregates was markedly suppressed in rat neural stem cell-derived neuronal cells by co-infection of an adenovirus expressing heat shock transcription factor 1 (HSF1), a master regulator of heat shock response. We performed DNA microarray analysis and searched several candidate molecules, located downstream of HSF1, which counteract TDP-43 aggregate formation. Among these, we identified Praja 1 RING-finger E3 ubiquitin ligase (PJA1) as a suppressor of phosphorylation and aggregate formation of TDP-43. Co-immunoprecipitation assay revealed that PJA1 binds to CTF TDP-43 and the E2-conjugating enzyme UBE2E3. PJA1 also suppressed formation of cytoplasmic phosphorylated TDP-43 aggregates in mouse facial motor neurons in vivo. Furthermore, phosphorylated TDP-43 aggregates were detected in PJA1-immunoreactive human ALS motor neurons. These results indicate that PJA1 is one of the principal E3 ubiquitin ligases for TDP-43 to counteract its aggregation propensity and could be a potential therapeutic target for ALS and FTLD.
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Affiliation(s)
- Kazuhiko Watabe
- Department of Medical Technology (Neuropathology), Kyorin University, Tokyo, Japan.,Department of Pathology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yoichiro Kato
- Department of Pathology, Tokyo Women's Medical University, Tokyo, Japan
| | - Miho Sakuma
- School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Makiko Murata
- Department of Medical Technology (Neuropathology), Kyorin University, Tokyo, Japan
| | | | - Taro Takemura
- Research Network and Facility Services Division, National Institute for Materials Science, Tsukuba, Japan
| | - Nobutaka Hanagata
- Research Network and Facility Services Division, National Institute for Materials Science, Tsukuba, Japan
| | - Mari Tada
- Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Akiyoshi Kakita
- Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Noriyuki Shibata
- Department of Pathology, Tokyo Women's Medical University, Tokyo, Japan
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Yamamoto K, Abe S, Honda A, Hashimoto J, Aizawa Y, Ishibashi S, Takemura T, Hanagata N, Yamamoto M, Miura O, Kurata M, Kitagawa M. Fatty acid beta oxidation enzyme HADHA is a novel potential therapeutic target in malignant lymphoma. J Transl Med 2020; 100:353-362. [PMID: 31527828 DOI: 10.1038/s41374-019-0318-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 07/23/2019] [Accepted: 08/05/2019] [Indexed: 01/08/2023] Open
Abstract
Cancer cells, including malignant lymphoma cells, alter their metabolism, termed "metabolic reprograming," on initiation of malignant transformation as well as upon accumulation of genetic abnormalities. Here, to identify a novel therapeutic target involved in the metabolic changes during malignant lymphoma, we performed global analyses combined with shotgun proteomics, in silico database analysis, and clinic-pathologic analysis of nonneoplastic lymphoid tissue and malignant lymphoma tissue and verified the molecular functions in vitro. In total, 2002 proteins were detected from both samples and proteins related to fatty acid beta-oxidation (FAO) were detected more frequently in malignant lymphoma tissue. Consequently, the most frequently detected protein, the mitochondrial trifunctional enzyme subunit-alpha (HADHA), was identified as a potential target. Immunohistochemical analyses revealed that HADHA tended to be overexpressed in a high-grade subtype of malignant lymphoma tissue. Clinicopathologic study revealed that HADHA overexpression was correlated with significantly worse overall survival (P = 0.013) and was an independent prognostic predictor in diffuse large B-cell lymphoma (P = 0.027). In vitro, downregulation of HADHA negatively regulated cell growth by causing G0/G1 arrest (P = 0.0008) similar to treatment with etomoxir, an inhibitor of FAO (P = 0.032). Moreover, downregulation of HADHA increased the susceptibility to doxorubicin (P = 0.002) and etoposide (P = 0.004). Moreover, these phenotypes were confirmed in an HADHA knockout system. Thus, we provide a basis for a novel therapeutic strategy through the regulation of HADHA and FAO in patients with refractory malignant lymphoma.
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Affiliation(s)
- Kouhei Yamamoto
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan.
| | - Shinya Abe
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Ayaka Honda
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Jun Hashimoto
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Yuuki Aizawa
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Sachiko Ishibashi
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Taro Takemura
- Nanotechnology Innovation Station for Nanoscale Science and Technology, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0047, Japan
| | - Nobutaka Hanagata
- Nanotechnology Innovation Station for Nanoscale Science and Technology, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0047, Japan
| | - Masahide Yamamoto
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Osamu Miura
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Morito Kurata
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Masanobu Kitagawa
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
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Richardson TB, Forster PM, Smith CJ, Maycock AC, Wood T, Andrews T, Boucher O, Faluvegi G, Fläschner D, Hodnebrog Ø, Kasoar M, Kirkevåg A, Lamarque J, Mülmenstädt J, Myhre G, Olivié D, Portmann RW, Samset BH, Shawki D, Shindell D, Stier P, Takemura T, Voulgarakis A, Watson‐Parris D. Efficacy of Climate Forcings in PDRMIP Models. J Geophys Res Atmos 2019; 124:12824-12844. [PMID: 32025453 PMCID: PMC6988499 DOI: 10.1029/2019jd030581] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 05/04/2023]
Abstract
Quantifying the efficacy of different climate forcings is important for understanding the real-world climate sensitivity. This study presents a systematic multimodel analysis of different climate driver efficacies using simulations from the Precipitation Driver and Response Model Intercomparison Project (PDRMIP). Efficacies calculated from instantaneous radiative forcing deviate considerably from unity across forcing agents and models. Effective radiative forcing (ERF) is a better predictor of global mean near-surface air temperature (GSAT) change. Efficacies are closest to one when ERF is computed using fixed sea surface temperature experiments and adjusted for land surface temperature changes using radiative kernels. Multimodel mean efficacies based on ERF are close to one for global perturbations of methane, sulfate, black carbon, and insolation, but there is notable intermodel spread. We do not find robust evidence that the geographic location of sulfate aerosol affects its efficacy. GSAT is found to respond more slowly to aerosol forcing than CO2 in the early stages of simulations. Despite these differences, we find that there is no evidence for an efficacy effect on historical GSAT trend estimates based on simulations with an impulse response model, nor on the resulting estimates of climate sensitivity derived from the historical period. However, the considerable intermodel spread in the computed efficacies means that we cannot rule out an efficacy-induced bias of ±0.4 K in equilibrium climate sensitivity to CO2 doubling when estimated using the historical GSAT trend.
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Affiliation(s)
- T. B. Richardson
- Priestley International Centre for ClimateUniversity of LeedsLeedsUK
| | - P. M. Forster
- Priestley International Centre for ClimateUniversity of LeedsLeedsUK
| | - C. J. Smith
- Priestley International Centre for ClimateUniversity of LeedsLeedsUK
| | - A. C. Maycock
- Priestley International Centre for ClimateUniversity of LeedsLeedsUK
| | - T. Wood
- Priestley International Centre for ClimateUniversity of LeedsLeedsUK
| | | | - O. Boucher
- Institut Pierre‐Simon LaplaceCNRS/Sorbonne UniversitéParisFrance
| | - G. Faluvegi
- NASA Goddard Institute for Space Studies and Center for Climate Systems ResearchColumbia UniversityNew YorkNYUSA
| | - D. Fläschner
- Atmosphere in the Earth SystemMax‐Planck‐Institut für MeteorologieHamburgGermany
| | - Ø. Hodnebrog
- CICERO Center for International Climate and Environmental ResearchOsloNorway
| | - M. Kasoar
- Department of PhysicsImperial College LondonLondonUK
| | - A. Kirkevåg
- Research and Development DepartmentNorwegian Meteorological InstituteOsloNorway
| | | | - J. Mülmenstädt
- Clouds and Global ClimateUniversität LeipzigLeipzigGermany
| | - G. Myhre
- CICERO Center for International Climate and Environmental ResearchOsloNorway
| | - D. Olivié
- Research and Development DepartmentNorwegian Meteorological InstituteOsloNorway
| | - R. W. Portmann
- Earth System Research LaboratoryNational Oceanic and Atmospheric AdministrationBoulderCOUSA
| | - B. H. Samset
- CICERO Center for International Climate and Environmental ResearchOsloNorway
| | - D. Shawki
- Department of PhysicsImperial College LondonLondonUK
| | - D. Shindell
- Earth & Ocean SciencesDuke UniversityDurhamNCUSA
| | - P. Stier
- Atmospheric, Oceanic and Planetary Physics, Department of PhysicsUniversity of OxfordOxfordUK
| | - T. Takemura
- Center for Oceanic and Atmospheric ResearchKyushu UniversityFukuokaJapan
| | | | - D. Watson‐Parris
- Atmospheric, Oceanic and Planetary Physics, Department of PhysicsUniversity of OxfordOxfordUK
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Smith CJ, Kramer RJ, Myhre G, Forster PM, Soden BJ, Andrews T, Boucher O, Faluvegi G, Fläschner D, Hodnebrog Ø, Kasoar M, Kharin V, Kirkevåg A, Lamarque J, Mülmenstädt J, Olivié D, Richardson T, Samset BH, Shindell D, Stier P, Takemura T, Voulgarakis A, Watson‐Parris D. Understanding Rapid Adjustments to Diverse Forcing Agents. Geophys Res Lett 2018; 45:12023-12031. [PMID: 30686845 PMCID: PMC6334512 DOI: 10.1029/2018gl079826] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/10/2018] [Accepted: 10/15/2018] [Indexed: 05/04/2023]
Abstract
Rapid adjustments are responses to forcing agents that cause a perturbation to the top of atmosphere energy budget but are uncoupled to changes in surface warming. Different mechanisms are responsible for these adjustments for a variety of climate drivers. These remain to be quantified in detail. It is shown that rapid adjustments reduce the effective radiative forcing (ERF) of black carbon by half of the instantaneous forcing, but for CO2 forcing, rapid adjustments increase ERF. Competing tropospheric adjustments for CO2 forcing are individually significant but sum to zero, such that the ERF equals the stratospherically adjusted radiative forcing, but this is not true for other forcing agents. Additional experiments of increase in the solar constant and increase in CH4 are used to show that a key factor of the rapid adjustment for an individual climate driver is changes in temperature in the upper troposphere and lower stratosphere.
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Affiliation(s)
- C. J. Smith
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - R. J. Kramer
- Rosenstiel School of Marine and Atmospheric ScienceUniversity of MiamiMiamiFLUSA
| | - G. Myhre
- CICERO Center for International Climate and Environmental Research in OsloOsloNorway
| | - P. M. Forster
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - B. J. Soden
- Rosenstiel School of Marine and Atmospheric ScienceUniversity of MiamiMiamiFLUSA
| | | | - O. Boucher
- Institut Pierre‐Simon Laplace, CNRS/Sorbonne UniversitéParisFrance
| | - G. Faluvegi
- NASA Goddard Institute for Space StudiesNew YorkNYUSA
- Center for Climate Systems ResearchColumbia UniversityNew YorkNYUSA
| | - D. Fläschner
- Max‐Planck‐Institut für MeteorologieHamburgGermany
| | - Ø. Hodnebrog
- CICERO Center for International Climate and Environmental Research in OsloOsloNorway
| | - M. Kasoar
- Department of PhysicsImperial College LondonLondonUK
- Grantham Institute – Climate Change and the EnvironmentImperial College LondonLondonUK
| | - V. Kharin
- Canadian Centre for Climate Modelling and AnalysisVictoriaBritish ColumbiaCanada
| | - A. Kirkevåg
- Norwegian Meteorological InstituteOsloNorway
| | | | - J. Mülmenstädt
- Institute of MeteorologyUniversität LeipzigLeipzigGermany
| | - D. Olivié
- Norwegian Meteorological InstituteOsloNorway
| | - T. Richardson
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - B. H. Samset
- CICERO Center for International Climate and Environmental Research in OsloOsloNorway
| | - D. Shindell
- Nicholas School of the EnvironmentDuke UniversityDurhamNCUSA
| | - P. Stier
- Atmospheric, Oceanic and Planetary Physics, Department of PhysicsUniversity of OxfordOxfordUK
| | | | | | - D. Watson‐Parris
- Atmospheric, Oceanic and Planetary Physics, Department of PhysicsUniversity of OxfordOxfordUK
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Takemura T, Kataoka Y, Uneno Y, Otoshi T, Matsumoto H, Tsutsumi Y, Tsujimoto Y, Yuasa M, Yoshioka T, Wada H. The reporting quality of prediction models in oncology journals: A systematic review. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy433.004] [Citation(s) in RCA: 4] [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] [Indexed: 11/14/2022] Open
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10
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Myhre G, Kramer RJ, Smith CJ, Hodnebrog Ø, Forster P, Soden BJ, Samset BH, Stjern CW, Andrews T, Boucher O, Faluvegi G, Fläschner D, Kasoar M, Kirkevåg A, Lamarque J, Olivié D, Richardson T, Shindell D, Stier P, Takemura T, Voulgarakis A, Watson‐Parris D. Quantifying the Importance of Rapid Adjustments for Global Precipitation Changes. Geophys Res Lett 2018; 45:11399-11405. [PMID: 30774164 PMCID: PMC6360531 DOI: 10.1029/2018gl079474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/09/2018] [Accepted: 10/12/2018] [Indexed: 05/04/2023]
Abstract
Different climate drivers influence precipitation in different ways. Here we use radiative kernels to understand the influence of rapid adjustment processes on precipitation in climate models. Rapid adjustments are generally triggered by the initial heating or cooling of the atmosphere from an external climate driver. For precipitation changes, rapid adjustments due to changes in temperature, water vapor, and clouds are most important. In this study we have investigated five climate drivers (CO2, CH4, solar irradiance, black carbon, and sulfate aerosols). The fast precipitation responses to a doubling of CO2 and a 10-fold increase in black carbon are found to be similar, despite very different instantaneous changes in the radiative cooling, individual rapid adjustments, and sensible heating. The model diversity in rapid adjustments is smaller for the experiment involving an increase in the solar irradiance compared to the other climate driver perturbations, and this is also seen in the precipitation changes.
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Affiliation(s)
- G. Myhre
- CICERO Center for International Climate ResearchOsloNorway
| | - R. J. Kramer
- Rosenstiel School of Marine and Atmospheric ScienceUniversity of MiamiMiamiFLUSA
| | - C. J. Smith
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - Ø. Hodnebrog
- CICERO Center for International Climate ResearchOsloNorway
| | - P. Forster
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - B. J. Soden
- Rosenstiel School of Marine and Atmospheric ScienceUniversity of MiamiMiamiFLUSA
| | - B. H. Samset
- CICERO Center for International Climate ResearchOsloNorway
| | - C. W. Stjern
- CICERO Center for International Climate ResearchOsloNorway
| | | | - O. Boucher
- Institut Pierre‐Simon LaplaceCNRS/Sorbonne UniversitéParisFrance
| | - G. Faluvegi
- NASA Goddard Institute for Space StudiesNew YorkNYUSA
- Center for Climate Systems ResearchColumbia UniversityNew YorkNYUSA
| | - D. Fläschner
- Max‐Planck‐Institut für MeteorologieHamburgGermany
| | - M. Kasoar
- Department of PhysicsImperial College LondonLondonUK
- Grantham Institute‐Climate Change and the EnvironmentImperial College LondonLondonUK
| | - A. Kirkevåg
- Norwegian Meteorological InstituteOsloNorway
| | | | - D. Olivié
- Norwegian Meteorological InstituteOsloNorway
| | - T. Richardson
- School of Earth and EnvironmentUniversity of LeedsLeedsUK
| | - D. Shindell
- Nicholas School of the EnvironmentDuke UniversityDurhamNCUSA
| | - P. Stier
- Atmospheric, Oceanic & Planetary Physics, Department of PhysicsUniversity of OxfordOxfordUK
| | - T. Takemura
- Research Institute for Applied MechanicsKyushu UniversityFukuokaJapan
| | | | - D. Watson‐Parris
- Atmospheric, Oceanic & Planetary Physics, Department of PhysicsUniversity of OxfordOxfordUK
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11
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Ikegaki S, Kataoka Y, Otoshi T, Takemura T, Shimada M. Development and validation of a deep learning model using biomarkers in pleural effusion for prediction of malignant pleural mesothelioma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy301.003] [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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12
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Koide M, Hagiwara Y, Tsuchiya M, Kanzaki M, Hatakeyama H, Tanaka Y, Minowa T, Takemura T, Ando A, Sekiguchi T, Yabe Y, Itoi E. Retained Myogenic Potency of Human Satellite Cells from Torn Rotator Cuff Muscles Despite Fatty Infiltration. TOHOKU J EXP MED 2018; 244:15-24. [PMID: 29311489 DOI: 10.1620/tjem.244.15] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Rotator cuff tears (RCTs) are a common shoulder problem in the elderly that can lead to both muscle atrophy and fatty infiltration due to less physical load. Satellite cells, quiescent cells under the basal lamina of skeletal muscle fibers, play a major role in muscle regeneration. However, the myogenic potency of human satellite cells in muscles with fatty infiltration is unclear due to the difficulty in isolating from small samples, and the mechanism of the progression of fatty infiltration has not been elucidated. The purpose of this study was to analyze the population of myogenic and adipogenic cells in disused supraspinatus (SSP) and intact subscapularis (SSC) muscles of the RCTs from the same patients using fluorescence-activated cell sorting. The microstructure of the muscle with fatty infiltration was observed as a whole mount condition under multi-photon microscopy. Myogenic differentiation potential and gene expression were evaluated in satellite cells. The results showed that the SSP muscle with greater fatty infiltration surrounded by collagen fibers compared with the SSC muscle under multi-photon microscopy. A positive correlation was observed between the ratio of muscle volume to fat volume and the ratio of myogenic precursor to adipogenic precursor. Although no difference was observed in the myogenic potential between the two groups in cell culture, satellite cells in the disused SSP muscle showed higher intrinsic myogenic gene expression than those in the intact SSC muscle. Our results indicate that satellite cells from the disused SSP retain sufficient potential of muscle growth despite the fatty infiltration.
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Affiliation(s)
- Masashi Koide
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Yoshihiro Hagiwara
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | | | - Makoto Kanzaki
- Graduate School of Biomedical Engineering, Tohoku University
| | - Hiroyasu Hatakeyama
- Graduate School of Biomedical Engineering, Tohoku University.,Frontier Research Institute for Interdisciplinary Sciences, Tohoku University
| | - Yukinori Tanaka
- Department of Oral Immunology, Tohoku University Graduate School of Dentistry
| | | | | | - Akira Ando
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Takuya Sekiguchi
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Yutaka Yabe
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
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13
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Liu L, Shawki D, Voulgarakis A, Kasoar M, Samset BH, Myhre G, Forster PM, Hodnebrog Ø, Sillmann J, Aalbergsjø SG, Boucher O, Faluvegi G, Iversen T, Kirkevåg A, Lamarque JF, Olivié D, Richardson T, Shindell D, Takemura T. A PDRMIP multi-model study on the impacts of regional aerosol forcings on global and regional precipitation. J Clim 2018; 31:4429-4447. [PMID: 32704205 PMCID: PMC7376680 DOI: 10.1175/jcli-d-17-0439.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Atmospheric aerosols such as sulfate and black carbon (BC) generate inhomogeneous radiative forcing and can affect precipitation in distinct ways compared to greenhouse gases (GHGs). Their regional effects on the atmospheric energy budget and circulation can be important for understanding and predicting global and regional precipitation changes, which act on top of the background GHG-induced hydrological changes. Under the framework of the Precipitation Driver Response Model Inter-comparison Project (PDRMIP), multiple models were used for the first time to simulate the influence of regional (Asian and European) sulfate and BC forcing on global and regional precipitation. The results show that, as in the case of global aerosol forcing, the global fast precipitation response to regional aerosol forcing scales with global atmospheric absorption, and the slow precipitation response scales with global surface temperature response. Asian sulphate aerosols appear to be a stronger driver of global temperature and precipitation change compared to European aerosols, but when the responses are normalised by unit radiative forcing or by aerosol burden change, the picture reverses, with European aerosols being more efficient in driving global change. The global apparent hydrological sensitivities of these regional forcing experiments are again consistent with those for corresponding global aerosol forcings found in the literature. However, the regional responses and regional apparent hydrological sensitivities do not align with the corresponding global values. Through a holistic approach involving analysis of the energy budget combined with exploring changes in atmospheric dynamics, we provide a framework for explaining the global and regional precipitation responses to regional aerosol forcing.
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Affiliation(s)
- L Liu
- Department of Physics, Imperial College London, London, UK and Northwest Institute of Nuclear Technology, Xi'an, China
| | - D Shawki
- Department of Physics, Imperial College London, London, UK
| | - A Voulgarakis
- Department of Physics, Imperial College London, London, UK
| | - M Kasoar
- Department of Physics, Imperial College London, London, UK
| | - B H Samset
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - G Myhre
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | | | - Ø Hodnebrog
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - J Sillmann
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - S G Aalbergsjø
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - O Boucher
- Institut Pierre-Simon Laplace, Univ. P. et M. Curie / CNRS, Paris, France
| | - G Faluvegi
- Columbia University & NASA Goddard Institute for Space Studies, New York, USA
| | - T Iversen
- Norwegian Meteorological Institute, Oslo, Norway
| | - A Kirkevåg
- Norwegian Meteorological Institute, Oslo, Norway
| | | | - D Olivié
- Norwegian Meteorological Institute, Oslo
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14
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Myhre G, Samset BH, Hodnebrog Ø, Andrews T, Boucher O, Faluvegi G, Fläschner D, Forster PM, Kasoar M, Kharin V, Kirkevåg A, Lamarque JF, Olivié D, Richardson TB, Shawki D, Shindell D, Shine KP, Stjern CW, Takemura T, Voulgarakis A. Sensible heat has significantly affected the global hydrological cycle over the historical period. Nat Commun 2018; 9:1922. [PMID: 29765048 PMCID: PMC5954152 DOI: 10.1038/s41467-018-04307-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [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: 06/22/2017] [Accepted: 04/17/2018] [Indexed: 11/15/2022] Open
Abstract
Globally, latent heating associated with a change in precipitation is balanced by changes to atmospheric radiative cooling and sensible heat fluxes. Both components can be altered by climate forcing mechanisms and through climate feedbacks, but the impacts of climate forcing and feedbacks on sensible heat fluxes have received much less attention. Here we show, using a range of climate modelling results, that changes in sensible heat are the dominant contributor to the present global-mean precipitation change since preindustrial time, because the radiative impact of forcings and feedbacks approximately compensate. The model results show a dissimilar influence on sensible heat and precipitation from various drivers of climate change. Due to its strong atmospheric absorption, black carbon is found to influence the sensible heat very differently compared to other aerosols and greenhouse gases. Our results indicate that this is likely caused by differences in the impact on the lower tropospheric stability.
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Affiliation(s)
- G Myhre
- CICERO Center for International Climate Research - Oslo, 0318, Oslo, Norway.
| | - B H Samset
- CICERO Center for International Climate Research - Oslo, 0318, Oslo, Norway
| | - Ø Hodnebrog
- CICERO Center for International Climate Research - Oslo, 0318, Oslo, Norway
| | - T Andrews
- Met Office Hadley Centre, Devon, EX1 3PB, United Kingdom
| | - O Boucher
- Institut Pierre-Simon Laplace, CNRS/Sorbonne Université, 75252, Paris, Cedex 05, France
| | - G Faluvegi
- NASA Goddard Institute for Space Studies, New York, NY, 10025, USA
- Center for Climate Systems Research, Columbia University, New York, NY, 10027, USA
| | - D Fläschner
- Max-Planck-Institut für Meteorologie, 20146, Hamburg, Germany
| | - P M Forster
- University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - M Kasoar
- Department of Physics, Imperial College London, London, SW7 2AZ, United Kingdom
| | - V Kharin
- Canadian Centre for Climate Modelling and Analysis, V8P 5C2, Victoria, BC,, Canada
| | - A Kirkevåg
- Norwegian Meteorological Institute, 0313, Oslo, Norway
| | | | - D Olivié
- Norwegian Meteorological Institute, 0313, Oslo, Norway
| | | | - D Shawki
- Department of Physics, Imperial College London, London, SW7 2AZ, United Kingdom
| | | | - K P Shine
- University of Reading, Reading, RG6 6BB, United Kingdom
| | - C W Stjern
- CICERO Center for International Climate Research - Oslo, 0318, Oslo, Norway
| | - T Takemura
- Kyushu University, 816-8580, Kasuga, Japan
| | - A Voulgarakis
- Department of Physics, Imperial College London, London, SW7 2AZ, United Kingdom
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15
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Richardson TB, Forster PM, Andrews T, Boucher O, Faluvegi G, Fläschner D, Kasoar M, Kirkevåg A, Lamarque JF, Myhre G, Olivié D, Samset BH, Shawki D, Shindell D, Takemura T, Voulgarakis A. Carbon dioxide physiological forcing dominates projected Eastern Amazonian drying. Geophys Res Lett 2018; 45:2815-2825. [PMID: 33041385 PMCID: PMC7546038 DOI: 10.1002/2017gl076520] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Future projections of east Amazonian precipitation indicate drying, but they are uncertain and poorly understood. In this study we analyse the Amazonian precipitation response to individual atmospheric forcings using a number of global climate models. Black carbon is found to drive reduced precipitation over the Amazon due to temperature-driven circulation changes, but the magnitude is uncertain. CO2 drives reductions in precipitation concentrated in the east, mainly due to a robustly negative, but highly variable in magnitude, fast response. We find that the physiological effect of CO2 on plant stomata is the dominant driver of the fast response due to reduced latent heating, and also contributes to the large model spread. Using a simple model we show that CO2 physiological effects dominate future multi-model mean precipitation projections over the Amazon. However, in individual models temperature-driven changes can be large, but due to little agreement, they largely cancel out in the model-mean.
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Affiliation(s)
| | | | - T Andrews
- Met Office Hadley Centre, United Kingdom
| | - O Boucher
- Institut Pierre-Simon Laplace, Université Pierre et Marie Curie / CNRS, Paris, France
| | - G Faluvegi
- NASA Goddard Institute for Space Studies and Center for Climate Systems Research, Columbia University, New York, USA
| | - D Fläschner
- Max-Planck-Institut für Meteorologie, Hamburg, Germany
| | - M Kasoar
- Imperial College London, London, United Kingdom
| | - A Kirkevåg
- Norwegian Meteorological Institute, Oslo, Norway
| | | | - G Myhre
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - D Olivié
- Norwegian Meteorological Institute, Oslo, Norway
| | - B H Samset
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - D Shawki
- Imperial College London, London, United Kingdom
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16
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Noma H, Naito C, Tada M, Yamanaka H, Takemura T, Nin K, Yoshihara H, Kuroda T. Prototyping Sensor Network System for Automatic Vital Signs Collection. Methods Inf Med 2018; 52:239-49. [DOI: 10.3414/me12-01-0096] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Accepted: 12/04/2012] [Indexed: 11/09/2022]
Abstract
SummaryObjective: Development of a clinical sensor network system that automatically collects vital sign and its supplemental data, and evaluation the effect of automatic vital sensor value assignment to patients based on locations of sensors.Methods: The sensor network estimates the data-source, a target patient, from the position of a vital sign sensor obtained from a newly developed proximity sensing system. The proximity sensing system estimates the positions of the devices using a Bluetooth inquiry process. Using Bluetooth access points and the positioning system newly developed in this project, the sensor network collects vital sign and its 4W (who, where, what, and when) supplemental data from any Blue-tooth ready vital sign sensors such as Continua-ready devices. The prototype was evaluated in a pseudo clinical setting at Kyoto University Hospital using a cyclic paired comparison and statistical analysis.Results: The result of the cyclic paired analysis shows the subjects evaluated the proposed system is more effective and safer than POCS as well as paper-based operation. It halves the times for vital signs input and eliminates input errors. On the other hand, the prototype failed in its position estimation for 12.6% of all attempts, and the nurses overlooked half of the errors. A detailed investigation clears that an advanced interface to show the system’s “confidence”, i.e. the probability of estimation error, must be effective to reduce the oversights.Conclusions: This paper proposed a clinical sensor network system that relieves nurses from vital signs input tasks. The result clearly shows that the proposed system increases the efficiency and safety of the nursing process both subjectively and objectively. It is a step toward new generation of point of nursing care systems where sensors take over the tasks of data input from the nurses.
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17
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Takemura T, Takada A, Kishimoto T, Komura S, Kubo H, Matsuoka Y, Miuchi K, Miyamoto S, Mizumoto T, Mizumura Y, Motomura T, Nakamasu Y, Nakamura K, Oda M, Ohta K, Parker JD, Sawano T, Sonoda S, Tanimori T, Tomono D, Yoshikawa K. Development of the micro pixel chamber based on MEMS technology. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201817402010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Micro pixel chambers (μ-PIC) are gaseous two-dimensional imaging detectors originally manufactured using printed circuit board (PCB) technology. They are used in MeV gamma-ray astronomy, medicalimaging, neutron imaging, the search for dark matter, and dose monitoring. The position resolution of the present μ-PIC is approximately 120 μm (RMS), however some applications require a fine position resolution of less than 100 μm. To this end, we have started to develop a μ-PIC based on micro electro mechanical system (MEMS) technology, which provides better manufacturing accuracy than PCB technology. Our simulation predicted the gains of MEMS μ-PICs to be twice those of PCB μ-PICs at the same anode voltage. We manufactured two MEMS μ-PICs and tested them to study their behavior. In these experiments, we successfully operated the fabricatedMEMS μ-PICs and we achieved a maximum gain of approximately 7×103 and collected their energy spectra under irradiation of X-rays from 55Fe. However, the measured gains of the MEMS μ-PICs were less than half of the values predicted in the simulations. We postulated that the gains of the MEMS μ-PICs are diminished by the effect of the silicon used as a semiconducting substrate.
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18
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Myhre G, Forster PM, Samset BH, Hodnebrog Ø, Sillmann J, Aalbergsjø SG, Andrews T, Boucher O, Faluvegi G, Fläschner D, Iversen T, Kasoar M, Kharin V, Lamarque JF, Olivié D, Richardson T, Shindell D, Shine KP, Stjern CW, Takemura T, Voulgarakis A, Zwiers F. PDRMIP: A Precipitation Driver and Response Model Intercomparison Project, Protocol and preliminary results. Bull Am Meteorol Soc 2017; 98:1185-1198. [PMID: 32713957 PMCID: PMC7380094 DOI: 10.1175/bams-d-16-0019.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
As the global temperature increases with changing climate, precipitation rates and patterns are affected through a wide range of physical mechanisms. The globally averaged intensity of extreme precipitation also changes more rapidly than the globally averaged precipitation rate. While some aspects of the regional variation in precipitation predicted by climate models appear robust, there is still a large degree of inter-model differences unaccounted for. Individual drivers of climate change initially alter the energy budget of the atmosphere leading to distinct rapid adjustments involving changes in precipitation. Differences in how these rapid adjustment processes manifest themselves within models are likely to explain a large fraction of the present model spread and needs better quantifications to improve precipitation predictions. Here, we introduce the Precipitation Driver and Response Model Intercomparison Project (PDRMIP), where a set of idealized experiments designed to understand the role of different climate forcing mechanisms were performed by a large set of climate models. PDRMIP focuses on understanding how precipitation changes relating to rapid adjustments and slower responses to climate forcings are represented across models. Initial results show that rapid adjustments account for large regional differences in hydrological sensitivity across multiple drivers. The PDRMIP results are expected to dramatically improve our understanding of the causes of the present diversity in future climate projections.
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Affiliation(s)
- G Myhre
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | | | - B H Samset
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - Ø Hodnebrog
- CICERO Center for International Climate and Environmental Research - Oslo Norway
| | - J Sillmann
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - S G Aalbergsjø
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | - T Andrews
- Met Office Hadley Centre, Exeter, UK
| | - O Boucher
- Laboratoire de Météorologie Dynamique, IPSL, Univ. P et M. Curie / CNRS, Paris, France
| | | | - D Fläschner
- Max-Planck-Institut fur Meteorologie, Hamburg Germany
| | - T Iversen
- Norwegian Meteorological Institute, Oslo, Norway
| | - M Kasoar
- Imperial College London, London, United Kingdom
| | - V Kharin
- Canadian Centre for Climate Modelling and Analysis, Victoria, BC, Canada A. Kirkevåg, Norwegian Meteorological Institute, Oslo, Norway
| | | | - D Olivié
- Norwegian Meteorological Institute, Oslo, Norway
| | | | | | - K P Shine
- University of Reading, Reading, United Kingdom
| | - Camilla W Stjern
- CICERO Center for International Climate and Environmental Research - Oslo, Norway
| | | | | | - F Zwiers
- Pacific Climate Impacts Consortium University of Victoria, Canada
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Tagaya M, Abe S, Motozuka S, Shiba K, Takemura T, Hayashi I, Sakaguchi Y. Surface-engineered mesoporous silica particles with luminescent, cytocompatible and targeting properties for cancer cell imaging. RSC Adv 2017. [DOI: 10.1039/c7ra00535k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mechanochemically-treated europium(iii)-doped mesoporous silica particles were prepared, and a targeting ligand for cancer cells was immobilized. The surface-engineered particles exhibited the clear imaging along with all the cellular shapes.
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Affiliation(s)
- Motohiro Tagaya
- Department of Materials Science and Technology
- Nagaoka University of Technology
- Nagaoka
- Japan
| | - Shigeaki Abe
- Graduate School of Dental Medicine
- Hokkaido University
- Sapporo 060-8586
- Japan
| | - Satoshi Motozuka
- Department of Mechanical Engineering
- Gifu National College of Technology
- Motosu
- Japan
| | - Kota Shiba
- World Premier International Research Center Initiative (WPI)
- International Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Taro Takemura
- Nanotechnology Innovation Station
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Ikuo Hayashi
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
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20
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Xu L, Dan M, Shao A, Cheng X, Zhang C, Yokel RA, Takemura T, Hanagata N, Niwa M, Watanabe D. Silver nanoparticles induce tight junction disruption and astrocyte neurotoxicity in a rat blood-brain barrier primary triple coculture model. Int J Nanomedicine 2015; 10:6105-18. [PMID: 26491287 PMCID: PMC4598217 DOI: 10.2147/ijn.s85265] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Silver nanoparticles (Ag-NPs) can enter the brain and induce neurotoxicity. However, the toxicity of Ag-NPs on the blood–brain barrier (BBB) and the underlying mechanism(s) of action on the BBB and the brain are not well understood. Method To investigate Ag-NP suspension (Ag-NPS)-induced toxicity, a triple coculture BBB model of rat brain microvascular endothelial cells, pericytes, and astrocytes was established. The BBB permeability and tight junction protein expression in response to Ag-NPS, NP-released Ag ions, and polystyrene-NP exposure were investigated. Ultrastructural changes of the microvascular endothelial cells, pericytes, and astrocytes were observed using transmission electron microscopy (TEM). Global gene expression of astrocytes was measured using a DNA microarray. Results A triple coculture BBB model of primary rat brain microvascular endothelial cells, pericytes, and astrocytes was established, with the transendothelial electrical resistance values >200 Ω·cm2. After Ag-NPS exposure for 24 hours, the BBB permeability was significantly increased and expression of the tight junction (TJ) protein ZO-1 was decreased. Discontinuous TJs were also observed between microvascular endothelial cells. After Ag-NPS exposure, severe mitochondrial shrinkage, vacuolations, endoplasmic reticulum expansion, and Ag-NPs were observed in astrocytes by TEM. Global gene expression analysis showed that three genes were upregulated and 20 genes were downregulated in astrocytes treated with Ag-NPS. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that the 23 genes were associated with metabolic processes, biosynthetic processes, response to stimuli, cell death, the MAPK pathway, and so on. No GO term and KEGG pathways were changed in the released-ion or polystyrene-NP groups. Ag-NPS inhibited the antioxidant defense of the astrocytes by increasing thioredoxin interacting protein, which inhibits the Trx system, and decreasing Nr4a1 and Dusp1. Meanwhile, Ag-NPS induced inflammation and apoptosis through modulation of the MAPK pathway or B-cell lymphoma-2 expression or mTOR activity in astrocytes. Conclusion These results draw our attention to the importance of Ag-NP-induced toxicity on the neurovascular unit and provide a better understanding of its toxicological mechanisms on astrocytes.
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Affiliation(s)
- Liming Xu
- National Institutes for Food and Drug Control, No 2, Temple of Heaven, Beijing, People's Republic of China ; School of Information and Engineering, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Mo Dan
- National Institutes for Food and Drug Control, No 2, Temple of Heaven, Beijing, People's Republic of China
| | - Anliang Shao
- National Institutes for Food and Drug Control, No 2, Temple of Heaven, Beijing, People's Republic of China
| | - Xiang Cheng
- National Institutes for Food and Drug Control, No 2, Temple of Heaven, Beijing, People's Republic of China ; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, People's Republic of China
| | - Cuiping Zhang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, People's Republic of China
| | - Robert A Yokel
- College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - Taro Takemura
- Nanotechnology Innovation Station for Nanoscale Science and Technology, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Nobutaka Hanagata
- Nanotechnology Innovation Station for Nanoscale Science and Technology, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Masami Niwa
- Department of Pharmacology, Nagasaki University, Nagasaki, Japan ; BBB Laboratory, PharmaCo-Cell Company, Ltd., Nagasaki, Japan
| | - Daisuke Watanabe
- Department of Pharmacology, Nagasaki University, Nagasaki, Japan ; BBB Laboratory, PharmaCo-Cell Company, Ltd., Nagasaki, Japan
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Tanimori T, Kubo H, Takada A, Iwaki S, Komura S, Kurosawa S, Matsuoka Y, Miuchi K, Miyamoto S, Mizumoto T, Mizumura Y, Nakamura K, Nakamura S, Oda M, Parker JD, Sawano T, Sonoda S, Takemura T, Tomono D, Ueno K. AN ELECTRON-TRACKING COMPTON TELESCOPE FOR A SURVEY OF THE DEEP UNIVERSE BY MeV GAMMA-RAYS. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/810/1/28] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Yoshimatsu G, Sakata N, Tsuchiya H, Minowa T, Takemura T, Morita H, Hata T, Fukase M, Aoki T, Ishida M, Motoi F, Naitoh T, Katayose Y, Egawa S, Unno M. The co-transplantation of bone marrow derived mesenchymal stem cells reduced inflammation in intramuscular islet transplantation. PLoS One 2015; 10:e0117561. [PMID: 25679812 PMCID: PMC4332659 DOI: 10.1371/journal.pone.0117561] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 12/27/2014] [Indexed: 12/12/2022] Open
Abstract
Aims/Hypothesis Although the muscle is one of the preferable transplant sites in islet transplantation, its transplant efficacy is poor. Here we attempted to determine whether an intramuscular co-transplantation of mesenchymal stem cells (MSCs) could improve the outcome. Methods We co-cultured murine islets with MSCs and then analyzed the morphological changes, viability, insulin-releasing function (represented by the stimulation index), and gene expression of the islets. We also transplanted 500 islets intramuscularly with or without 5 × 105 MSCs to diabetic mice and measured their blood glucose level, the glucose changes in an intraperitoneal glucose tolerance test, and the plasma IL-6 level. Inflammation, apoptosis, and neovascularization in the transplantation site were evaluated histologically. Results The destruction of islets tended to be prevented by co-culture with MSCs. The stimulation index was significantly higher in islets co-cultured with MSCs (1.78 ± 0.59 vs. 7.08 ± 2.53; p = 0.0025). In terms of gene expression, Sult1c2, Gstm1, and Rab37 were significantly upregulated in islets co-cultured with MSCs. Although MSCs were effective in the in vitro assays, they were only partially effective in facilitating intramuscular islet transplantation. Co-transplanted MSCs prevented an early inflammatory reaction from the islets (plasma IL-6; p = 0.0002, neutrophil infiltration; p = 0.016 inflammatory area; p = 0.021), but could not promote neovascularization in the muscle, resulting in the failure of many intramuscular transplanted islets to engraft. Conclusions In conclusion, co-culturing and co-transplanting MSCs is potentially useful in islet transplantation, especially in terms of anti-inflammation, but further augmentation for an anti-apoptosis effect and neovascularization is necessary.
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Affiliation(s)
- Gumpei Yoshimatsu
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Naoaki Sakata
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Haruyuki Tsuchiya
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takashi Minowa
- Nanotechnology Innovation Station, National Institute for Materials Science, Tsukuba, Japan
| | - Taro Takemura
- Nanotechnology Innovation Station, National Institute for Materials Science, Tsukuba, Japan
| | - Hiromi Morita
- Nanotechnology Innovation Station, National Institute for Materials Science, Tsukuba, Japan
| | - Tatsuo Hata
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masahiko Fukase
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeshi Aoki
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masaharu Ishida
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Fuyuhiko Motoi
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeshi Naitoh
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yu Katayose
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan; Division of Integrated Surgery and Oncology, Tohoku University Hospital, Sendai, Japan
| | - Shinichi Egawa
- Division of International Cooperation for Disaster Medicine, Tohoku University, Sendai, Japan
| | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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Kakinoki S, Sakai Y, Takemura T, Hanagata N, Fujisato T, Ishihara K, Yamaoka T. Gene chip/PCR-array analysis of tissue response to 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer surfaces in a mouse subcutaneous transplantation system. Journal of Biomaterials Science, Polymer Edition 2014; 25:1658-72. [DOI: 10.1080/09205063.2014.939917] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Okano M, Sakata N, Ueda S, Takemura T. Recovery from life-threatening transplantation-associated thrombotic microangiopathy using eculizumab in a patient with very severe aplastic anemia. Bone Marrow Transplant 2014; 49:1116-8. [DOI: 10.1038/bmt.2014.97] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Wheeler DC, Abdalla S, Chertow G, Parfrey P, Herzog C, Mikolasevic I, Racki S, Lukenda V, Milic S, Devcic B, Orlic L, Suttorp MM, Hoekstra T, Ocak G, Van Diepen ATN, Ott I, Mittelman M, Rabelink TJ, Krediet RT, Dekker FW, Simone S, Dell'Oglio MPS, Ciccone M, Corciulo R, Castellano G, Balestra C, Grandaliano G, Gesualdo L, Pertosa G, Nishida M, Ando M, Karasawa K, Iwamoto Y, Tsuchiya K, Nitta K, Krzanowski M, Janda K, Gajda M, Dumnicka P, Fedak D, Lis G, Ja kowski P, Litwin JA, Su owicz W, Freitas GR, Silva VB, Abensur H, Luders C, Pereira BJ, Castro MC, Oliverira RB, Moyses RM, Elias RM, Silva BC, Tekce H, Ozturk S, Aktas G, Kin Tekce B, Erdem A, Ozyasar M, Taslamacioglu Duman T, Yazici M, Kirkpantur A, Balci MM, Turkvatan A, Afsar B, Alkis M, Mandiroglu F, Voroneanu L, Siriopol D, Nistor I, Apetrii M, Hogas S, Onofriescu M, Covic A, An WS, Kim SE, Son YK, Oh YJ, Gelev S, Toshev S, Trajceska L, Selim G, Dzekova P, Shikole A, Park J, Lee JS, Shin ES, Ann SH, Kim SJ, Chung HC, Janda K, Krzanowski M, Gajda M, Dumnicka P, Fedak D, Lis G, Litwin JA, Sulowicz W, Elewa U, Bichari W, Abo-Seif K, Seferi S, Rroji M, Likaj E, Spahia N, Barbullushi M, Thereska N, Kopecky CM, Genser B, Maerz W, Wanner C, Saemann MD, Weichhart T, Sezer S, Gurlek Demirci B, Tutal E, Bal Z, Erkmen Uyar M, Ozdemir Acar FN, Macunluoglu B, Atakan A, Ari Bakir E, Georgianos P, Sarafidis PA, Stamatiadis DN, Liakopoulos V, Zebekakis PE, Papagianni A, Lasaridis AN, Eftimovska - Otovic N, Babalj-Banskolieva E, Kostadinska-Bogdanoska S, Grozdanovski R, Aono M, Sato Y, El Amrani M, Asserraji M, Benyahia M, Lee YK, Choi SR, Cho A, Kim JK, Choi MJ, Kim SJ, Yoon JW, Koo JR, Kim HJ, Noh JW, Inagaki H, Yokota N, Sato Y, Chiyotanda S, Fukami K, Fujimoto S, Kendi Celebi Z, Kutlay S, Sengul S, Nergizoglu G, Erturk S, Ates K, Vishnevskii KA, Rumyantsev AS, Zemchenkov AY, Smirnov AV, Reinhardt B, Knaup R, Esteve Simo V, Carneiro Oliveira J, Moreno Guzman F, Fulquet Nicolas M, Pou Potau M, Saurina Sole A, Duarte Gallego V, Ramirez De Arellano Serna M, Turkmen K, Demirtas L, Akbas EM, Bakirci EM, Buyuklu M, Timuroglu A, Georgianos PI, Sarafidis PA, Karpetas A, Liakopoulos V, Stamatiadis DN, Papagianni A, Lasaridis AN, Taira T, Nohtomi K, Takemura T, Chiba T, Hirano T, Chang CT, Huang CC, Chen CJ, El Amrani M, Mohamed A, Benyahia M, Kanai H, Tamura Y, Kaizu Y, Kali A, Yayar O, Erdogan B, Eser B, Ercan Z, Buyukbakkal M, Merhametsiz O, Haspulat A, Yildirim T, Bozkurt B, Ayli MD, Bal Z, Erkmen Uyar M, Gokustun D, Gurlek Demirci B, Tutal E, Sezer S, Markaki A, Grammatikopoulou M, Fragkiadakis G, Stylianou K, Venyhaki M, Chatzi V, Selim G, Stojceva-Taneva O, Tozija L, Dzekova-Vidimliski P, Trajceska L, Gelev S, Petronievic Z, Sikole A, Moyseyenko V, Nykula T, Fernandes RT, Barreto DV, Rodrigues GGC, Misael A, Branco-Martins CT, Barreto FC, Yayar O, Ercan Z, Eser B, Merhametsiz O, Haspulat A, Buyukbakkal M, Erdogan B, Yildirim T, Bozkurt B, Ayli MD. DIALYSIS CARDIOVASCULAR COMPLICATIONS 1. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu155] [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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Ehashi T, Takemura T, Hanagata N, Minowa T, Kobayashi H, Ishihara K, Yamaoka T. Comprehensive genetic analysis of early host body reactions to the bioactive and bio-inert porous scaffolds. PLoS One 2014; 9:e85132. [PMID: 24454803 PMCID: PMC3891765 DOI: 10.1371/journal.pone.0085132] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 07/11/2013] [Accepted: 11/22/2013] [Indexed: 02/06/2023] Open
Abstract
To design scaffolds for tissue regeneration, details of the host body reaction to the scaffolds must be studied. Host body reactions have been investigated mainly by immunohistological observations for a long time. Despite of recent dramatic development in genetic analysis technologies, genetically comprehensive changes in host body reactions are hardly studied. There is no information about host body reactions that can predict successful tissue regeneration in the future. In the present study, porous polyethylene scaffolds were coated with bioactive collagen or bio-inert poly(2-methacryloyloxyethyl phosphorylcholine-co-n-butyl methacrylate) (PMB) and were implanted subcutaneously and compared the host body reaction to those substrates by normalizing the result using control non-coat polyethylene scaffold. The comprehensive analyses of early host body reactions to the scaffolds were carried out using a DNA microarray assay. Within numerous genes which were expressed differently among these scaffolds, particular genes related to inflammation, wound healing, and angiogenesis were focused upon. Interleukin (IL)-1β and IL-10 are important cytokines in tissue responses to biomaterials because IL-1β promotes both inflammation and wound healing and IL-10 suppresses both of them. IL-1β was up-regulated in the collagen-coated scaffold. Collagen-specifically up-regulated genes contained both M1- and M2-macrophage-related genes. Marked vessel formation in the collagen-coated scaffold was occurred in accordance with the up-regulation of many angiogenesis-inducible factors. The DNA microarray assay provided global information regarding the host body reaction. Interestingly, several up-regulated genes were detected even on the very bio-inert PMB-coated surfaces and those genes include inflammation-suppressive and wound healing-suppressive IL-10, suggesting that not only active tissue response but also the inert response may relates to these genetic regulations.
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Affiliation(s)
- Tomo Ehashi
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
- Core Research Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Tokyo, Japan
| | - Taro Takemura
- Nanotechnology Innovation Station, National Institute for Materials Science, Ibaraki, Japan
| | - Nobutaka Hanagata
- Nanotechnology Innovation Station, National Institute for Materials Science, Ibaraki, Japan
| | - Takashi Minowa
- Nanotechnology Innovation Station, National Institute for Materials Science, Ibaraki, Japan
| | - Hisatoshi Kobayashi
- Biomaterials Center, National Institute for Materials Science, Ibaraki, Japan
| | - Kazuhiko Ishihara
- Department of Materials Engineering and Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
- Core Research Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Tokyo, Japan
- * E-mail:
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Miyazaki HT, Kasaya T, Takemura T, Hanagata N, Yasuda T, Miyazaki H. Diffraction-unlimited optical imaging of unstained living cells in liquid by electron beam scanning of luminescent environmental cells. Opt Express 2013; 21:28198-28218. [PMID: 24514332 DOI: 10.1364/oe.21.028198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
An environmental cell with a 50-nm-thick cathodoluminescent window was attached to a scanning electron microscope, and diffraction-unlimited near-field optical imaging of unstained living human lung epithelial cells in liquid was demonstrated. Electrons with energies as low as 0.8 - 1.2 kV are sufficiently blocked by the window without damaging the specimens, and form a sub-wavelength-sized illumination light source. A super-resolved optical image of the specimen adhered to the opposite window surface was acquired by a photomultiplier tube placed below. The cells after the observation were proved to stay alive. The image was formed by enhanced dipole radiation or energy transfer, and features as small as 62 nm were resolved.
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Takadate T, Onogawa T, Fujii K, Motoi F, Mikami S, Fukuda T, Kihara M, Suzuki T, Takemura T, Minowa T, Hanagata N, Kinoshita K, Morikawa T, Shirasaki K, Rikiyama T, Katayose Y, Egawa S, Nishimura T, Unno M. Nm23/nucleoside diphosphate kinase-A as a potent prognostic marker in invasive pancreatic ductal carcinoma identified by proteomic analysis of laser micro-dissected formalin-fixed paraffin-embedded tissue. Clin Proteomics 2012; 9:8. [PMID: 22892044 PMCID: PMC3582529 DOI: 10.1186/1559-0275-9-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [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: 02/23/2012] [Accepted: 06/12/2012] [Indexed: 12/11/2022] Open
Abstract
Background Pancreatic cancer is among the most lethal malignancies worldwide. This study aimed to identify a novel prognostic biomarker, facilitating treatment selection, using mass spectrometry (MS)-based proteomic analysis with formalin-fixed paraffin-embedded (FFPE) tissue. Results The two groups with poor prognosis (n = 4) and with better prognosis (n = 4) had been carefully chosen among 96 resected cases of pancreatic cancer during 1998 to 2007 in Tohoku University Hospital. Although those 2 groups had adjusted background (UICC-Stage IIB, Grade2, R0, gemcitabine adjuvant), there was a significant difference in postoperative mean survival time (poor 21.0 months, better 58.1 months, P = 0.0067). Cancerous epithelial cells collected from FFPE tissue sections by laser micro-dissection (LMD) were processed for liquid chromatography-tandem mass spectrometry (LC-MS/MS). In total, 1099 unique proteins were identified and 6 proteins showed different expressions in the 2 groups by semi-quantitative comparison. Among these 6 proteins, we focused on Nm23/Nucleoside Diphosphate Kinase A (NDPK-A) and immunohistochemically confirmed its expression in the cohort of 96 cases. Kaplan-Meier analysis showed high Nm23/NDPK-A expression to correlate with significantly worse overall survival (P = 0.0103). Moreover, in the multivariate Cox regression model, Nm23/NDPK-A over-expression remained an independent predictor of poor survival with a hazard ratio of 1.97 (95% CI 1.16-3.56, P = 0.0110). Conclusions We identified 6 candidate prognostic markers for postoperative pancreatic cancer using FFPE tissues and immunohistochemically demonstrated high Nm23/NDPK-A expression to be a useful prognostic marker for pancreatic cancer.
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Affiliation(s)
- Tatsuyuki Takadate
- Division of Gastroenterological Surgery, Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Miyagi, Japan.
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Kaskaoutis DG, Gautam R, Singh RP, Houssos EE, Goto D, Singh S, Bartzokas A, Kosmopoulos PG, Sharma M, Hsu NC, Holben BN, Takemura T. Influence of anomalous dry conditions on aerosols over India: Transport, distribution and properties. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011jd017314] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Xu L, Li X, Takemura T, Hanagata N, Wu G, Chou LL. Genotoxicity and molecular response of silver nanoparticle (NP)-based hydrogel. J Nanobiotechnology 2012; 10:16. [PMID: 22548743 PMCID: PMC3430588 DOI: 10.1186/1477-3155-10-16] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [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: 12/07/2011] [Accepted: 05/01/2012] [Indexed: 11/30/2022] Open
Abstract
Background Since silver-nanoparticles (NPs) possess an antibacterial activity, they were commonly used in medical products and devices, food storage materials, cosmetics, various health care products, and industrial products. Various silver-NP based medical devices are available for clinical uses, such as silver-NP based dressing and silver-NP based hydrogel (silver-NP-hydrogel) for medical applications. Although the previous data have suggested silver-NPs induced toxicity in vivo and in vitro, there is lack information about the mechanisms of biological response and potential toxicity of silver-NP-hydrogel. Methods In this study, the genotoxicity of silver-NP-hydrogel was assayed using cytokinesis-block micronucleus (CBMN). The molecular response was studied using DNA microarray and GO pathway analysis. Results and discussion The results of global gene expression analysis in HeLa cells showed that thousands of genes were up- or down-regulated at 48 h of silver-NP-hydrogel exposure. Further GO pathway analysis suggested that fourteen theoretical activating signaling pathways were attributed to up-regulated genes; and three signal pathways were attributed to down-regulated genes. It was discussed that the cells protect themselves against silver NP-mediated toxicity through up-regulating metallothionein genes and anti-oxidative stress genes. The changes in DNA damage, apoptosis and mitosis pathway were closely related to silver-NP-induced cytotoxicity and chromosome damage. The down-regulation of CDC14A via mitosis pathway might play a role in potential genotoxicity induced by silver-NPs. Conclusions The silver-NP-hydrogel induced micronuclei formation in cellular level and broad spectrum molecular responses in gene expression level. The results of signal pathway analysis suggested that the balances between anti-ROS response and DNA damage, chromosome instability, mitosis inhibition might play important roles in silver-NP induced toxicity. The inflammatory factors were likely involved in silver-NP-hydrogel complex-induced toxic effects via JAK-STAT signal transduction pathway and immune response pathway. These biological responses eventually decide the future of the cells, survival or apoptosis.
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Affiliation(s)
- Liming Xu
- Institute for Medical Devices Control, National Institutes for Food and Drug Control, Beijing 100050, China.
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Yoshie S, Ikehata M, Hirota N, Takemura T, Minowa T, Hanagata N, Hayakawa T. Evaluation of mutagenicity and co-mutagenicity of strong static magnetic fields up to 13 Tesla in Escherichia coli deficient in superoxide dismutase. J Magn Reson Imaging 2011; 35:731-6. [DOI: 10.1002/jmri.22883] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2011] [Accepted: 10/10/2011] [Indexed: 11/06/2022] Open
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Watanabe S, Sudo K, Nagashima T, Takemura T, Kawase H, Nozawa T. Future projections of surface UV-B in a changing climate. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jd015749] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tagaya M, Ikoma T, Takemura T, Hanagata N, Yoshioka T, Tanaka J. Protein Adsorption and Subsequent Fibroblasts Adhesion on Hydroxyapatite Nanocrystals. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1757-899x/18/19/192009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Tagaya M, Ikoma T, Takemura T, Hanagata N, Yoshioka T, Tanaka J. Effect of interfacial proteins on osteoblast-like cell adhesion to hydroxyapatite nanocrystals. Langmuir 2011; 27:7645-7653. [PMID: 21615097 DOI: 10.1021/la200621p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A quartz crystal microbalance with dissipation (QCM-D) technique was employed to detecting the protein adsorption and subsequent osteoblast-like cell adhesion to hydroxyapatite (HAp) nanocrystals. The interfacial phenomena with the preadsorption of three proteins (albumin (BSA), fibronectin (Fn), and collagen (Col)), the subsequent adsorption of fetal bovine serum (FBS), and the adhesion of the cells were investigated. The QCM-D measured the frequency shift (Δf) and dissipation energy shift (ΔD), and the viscoelastic properties of the adlayers were evaluated using ΔD-Δf plot and Voigt-based viscoelastic model. The Col adsorption significantly showed higher Δf, ΔD, elasticity, and viscosity values as compared to the BSA and Fn adsorption, and the subsequent FBS adsorption depended on the preadsorbed proteins. The ΔD-Δf plot of the cell adhesion also showed a different behavior depending on the surfaces, and the Fn- and Col-modified surfaces showed the rapid mass and ΔD changes by forming the viscous interfacial layers with cell adhesion, indicating that the processes were affected by the cellular reaction through the extracellular matrix (ECM) proteins. The confocal laser scanning microscope images of adherent cells showed a different morphology and pseudopod on the surfaces. The cells adhered to the surfaces modified with the Fn and Col had significantly uniaxially expanded shapes and fibrous pseudopods, and those modified with the BSA had a round shape. Therefore, the different cell-protein interactions would cause the arrangement of the ECM and the cytoskeleton changes at the interfaces, and these phenomena were successfully detected by the QCM-D and Voigt-based model.
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Affiliation(s)
- Motohiro Tagaya
- Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, O-okayama 2-12-1, Tokyo 152-8550, Japan.
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Tagaya M, Ikoma T, Takemura T, Hanagata N, Okuda M, Yoshioka T, Tanaka J. Detection of interfacial phenomena with osteoblast-like cell adhesion on hydroxyapatite and oxidized polystyrene by the quartz crystal microbalance with dissipation. Langmuir 2011; 27:7635-7644. [PMID: 21595447 DOI: 10.1021/la200008z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The adhesion process of osteoblast-like cells on hydroxyapatite (HAp) and oxidized polystyrene (PSox) was investigated using a quartz crystal microbalance with dissipation (QCM-D), confocal laser scanning microscope (CLSM), and atomic force microscope (AFM) techniques in order to clarify the interfacial phenomena between the surfaces and cells. The interfacial viscoelastic properties (shear viscosity (η(ad)), elastic shear modulus (μ(ad)), and tan δ) of the preadsorbed protein layer and the interface layer between the surfaces and cells were estimated using a Voigt-based viscoelastic model from the measured frequency (Δf) and dissipation shift (ΔD) curves. In the ΔD-Δf plots, the cell adhesion process on HAp was classified as (1) a mass increase only, (2) increases in both mass and ΔD, and (3) slight decreases in mass and ΔD. On PSox, only ΔD increases were observed, indicating that the adhesion behavior depended on the surface properties. The interfacial μ(ad) value between the material surfaces and cells increased with the number of adherent cells, whereas η(ad) and tanδ decreased slightly, irrespective of the surface. Thus, the interfacial layer changed the elasticity to viscosity with an increase in the number. The tan δ values on HAp were higher than those on PSox and exceeded 1.0. Furthermore, the pseudopod-like structures of the cells on HAp had periodic stripe patterns stained with a type I collagen antibody, whereas those on PSox had cell-membrane-like structures unstained with type I collagen. These results indicate that the interfacial layers on PSox and HAp exhibit elasticity and viscosity, respectively, indicating that the rearrangements of the extracellular matrix and cytoskeleton changes cause different cell-surface interactions. Therefore, the different cell adhesion process, interfacial viscoelasticity, and morphology depending on the surfaces were successfully monitored in situ and evaluated by the QCM-D technique combined with other techniques.
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Affiliation(s)
- Motohiro Tagaya
- Department of Metallurgy & Ceramics Science, Tokyo Institute of Technology, O-okayama 2-12-1, Tokyo 152-8550, Japan.
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Kuramochi J, Inase N, Miyazaki Y, Kawachi H, Takemura T, Yoshizawa Y. Lung cancer in chronic hypersensitivity pneumonitis. ACTA ACUST UNITED AC 2011; 82:263-7. [PMID: 21625073 DOI: 10.1159/000327738] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Accepted: 03/23/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND So far, the association of lung cancer with chronic hypersensitivity pneumonitis (CHP) has not been studied. OBJECTIVE We examined the prevalence and revealed clinical features of lung cancer in CHP. METHODS We retrospectively reviewed the medical records from 1994 through 2005 and identified 11 patients (15 lesions) with lung cancer among 104 patients with CHP. Their clinical features and histopathological findings were analyzed. RESULTS Ten men and 1 woman with a median age of 68.9 years were included. All patients had a smoking history. The most prevalent histopathological type of lung cancer was squamous cell carcinoma (53%), and all tumors were located in the peripheral region of the lung. Four patients suffered from lung cancer after the diagnosis of CHP and 1 patient had lung cancer before the diagnosis of CHP. The histological pattern of CHP showed a predominantly usual interstitial pneumonia-like lesion. Tumors were located adjacent to honeycombing in 7 (47%) of 15 lesions, bullae in 4 (27%) lesions, and relatively normal lung in 4 lesions. CONCLUSIONS Since the prevalence of lung cancer in CHP seems to be high (10.6%) as seen in idiopathic pulmonary fibrosis, physicians should be aware of the possible complication of lung cancer in CHP.
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Affiliation(s)
- J Kuramochi
- Department of Integrated Pulmonology, Tokyo Medical and Dental University, Tokyo, Japan
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Hanagata N, Li X, Morita H, Takemura T, Li J, Minowa T. Characterization of the osteoblast-specific transmembrane protein IFITM5 and analysis of IFITM5-deficient mice. J Bone Miner Metab 2011; 29:279-90. [PMID: 20838829 DOI: 10.1007/s00774-010-0221-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [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] [Received: 03/01/2010] [Accepted: 08/08/2010] [Indexed: 10/19/2022]
Abstract
Interferon-inducible transmembrane protein 5 (IFITM5) is an osteoblast-specific membrane protein whose expression peaks around the early mineralization stage during the osteoblast maturation process. To investigate IFITM5 function, we first sought to identify which proteins interact with IFITM5. Liquid chromatography mass spectrometry revealed that FK506-binding protein 11 (FKBP11) co-immunoprecipitated with IFITM5. FKBP11 is the only protein it was found to interact with in osteoblasts, while IFITM5 interacts with several proteins in fibroblasts. FKBPs are involved in protein folding and immunosuppressant binding, but we could not be sure that IFITM5 participated in these activities when bound to FKBP11. Thus, we generated Ifitm5-deficient mice and analyzed their skeletal phenotypes. The skeletons, especially the long bones, of homozygous mutants (Ifitm5(-/-)) were smaller than those of heterozygous mutants (Ifitm5(+/-)), although we did not observe any significant differences in bone morphometric parameters. The effect of Ifitm5 deficiency on bone formation was more significant in newborns than in young and adult mice, suggesting that Ifitm5 deficiency might have a greater effect on prenatal bone development. Overall, the effect of Ifitm5 deficiency on bone formation was less than we expected. We hypothesize that this may have resulted from a compensatory mechanism in Ifitm5-deficient mice.
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Affiliation(s)
- Nobutaka Hanagata
- Nanotechnology Innovation Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
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Motozaki W, Nagatani Y, Kimura Y, Endo K, Takemura T, Kurmaev E, Moewes A. Evaluation of antioxidant activity and electronic structure of aspirin and paracetamol. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2010.10.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tagaya M, Ikoma T, Takemura T, Migita S, Okuda M, Yoshioka T, Hanagata N, Tanaka J. Initial Adhesion Behavior of Fibroblasts onto Hydroxyapatite Nanocrystals. ACTA ACUST UNITED AC 2011. [DOI: 10.4303/bda/d110165] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Motohiro Tagaya
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
- School of Science & Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Toshiyuki Ikoma
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
| | - Taro Takemura
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
| | - Satoshi Migita
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
| | - Mitsuhiro Okuda
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
| | - Tomohiko Yoshioka
- School of Science & Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Nobutaka Hanagata
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
| | - Junzo Tanaka
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan
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Manabe S, Miura Y, Takemura T, Ashida N, Nakagawa R, Mineno T, Matsumura Y. Development of ICF code selection tools for mental health care. Methods Inf Med 2010; 50:150-7. [PMID: 21170470 DOI: 10.3414/me10-01-0062] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Accepted: 10/25/2010] [Indexed: 11/09/2022]
Abstract
BACKGROUND The International Classification of Functioning, Disability and Health (ICF) has been available as a means of coding life functions but the coding process is cumbersome due to the large number of ICF codes. In the current study, we developed ICF code selection tools to support the coding of activity and participation data recorded in domiciliary mental health care reports. METHODS We first developed a search system to facilitate the selection of ICF codes by tracking back through codes' conceptual trees using a directory tool. We performed a morphological analysis on the training data set to correlate nouns with the ICF codes and obtained an analysis corpus to which numerical scores representing the frequencies of associated ICF codes for each noun were assigned. Based on the obtained corpus we developed a full-text search tool, which could simplify ICF coding relative to that performed using the directory tool. We then evaluated the usefulness of the former tool on the test data set. RESULTS Using the full-text search tool, correct ICF codes were recorded in the first candidate list for only 54.2% of sentences. However, correct ICF codes appeared on the combined candidate lists for 90.1% of sentences and on the top three candidate lists for 71.7%. In a specific case (General Tasks and Demands), 100% of the correct codes were included on the combined candidate lists. CONCLUSION We developed selection tools that effectively supported ICF coding, although it was impossible to fully automate ICF coding. This indicated that ICF codes could more effectively be applied to mental health care.
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Affiliation(s)
- S Manabe
- Department of Integrated Medicine, Medical Informatics, Osaka University Graduate School of Medicine, Suita,Osaka, Japan
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Regenbogen SE, Hirose M, Imanaka Y, Oh EH, Fukuda H, Gawande AA, Takemura T, Yoshihara H. A comparative analysis of incident reporting lag times in academic medical centres in Japan and the USA. BMJ Qual Saf 2010; 19:e10. [DOI: 10.1136/qshc.2008.029215] [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: 11/04/2022]
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Ichinose M, Takemura T, Andoh K, Sugimoto M. Pathological analysis of umbilical cord ulceration associated with fetal duodenal and jejunal atresia. Placenta 2010; 31:1015-8. [DOI: 10.1016/j.placenta.2010.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 08/07/2010] [Accepted: 08/09/2010] [Indexed: 10/19/2022]
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Xu M, Fujita D, Kajiwara S, Minowa T, Li X, Takemura T, Iwai H, Hanagata N. Contribution of physicochemical characteristics of nano-oxides to cytotoxicity. Biomaterials 2010; 31:8022-31. [DOI: 10.1016/j.biomaterials.2010.06.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2010] [Accepted: 06/06/2010] [Indexed: 02/06/2023]
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Hanagata N, Takemura T, Minowa T. Global gene expression analysis for evaluation and design of biomaterials. Sci Technol Adv Mater 2010; 11:013001. [PMID: 27877315 PMCID: PMC5090542 DOI: 10.1088/1468-6996/11/1/013001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Revised: 02/22/2010] [Accepted: 01/23/2010] [Indexed: 06/06/2023]
Abstract
Comprehensive gene expression analysis using DNA microarrays has become a widespread technique in molecular biological research. In the biomaterials field, it is used to evaluate the biocompatibility or cellular toxicity of metals, polymers and ceramics. Studies in this field have extracted differentially expressed genes in the context of differences in cellular responses among multiple materials. Based on these genes, the effects of materials on cells at the molecular level have been examined. Expression data ranging from several to tens of thousands of genes can be obtained from DNA microarrays. For this reason, several tens or hundreds of differentially expressed genes are often present in different materials. In this review, we outline the principles of DNA microarrays, and provide an introduction to methods of extracting information which is useful for evaluating and designing biomaterials from comprehensive gene expression data.
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Affiliation(s)
- Nobutaka Hanagata
- Nanotechnology Innovation Center and Biomaterials Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
- Biomaterials Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
- Graduate School of Life Science, Hokkaido University, N10 W8, Kita-ku, Sapporo 060-0812, Japan
| | - Taro Takemura
- Nanotechnology Innovation Center and Biomaterials Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Takashi Minowa
- Nanotechnology Innovation Center and Biomaterials Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
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Yamayoshi S, Yamashita Y, Li J, Hanagata N, Minowa T, Takemura T, Koike S. Scavenger receptor B2 is a cellular receptor for enterovirus 71. Nat Med 2009; 15:798-801. [PMID: 19543282 DOI: 10.1038/nm.1992] [Citation(s) in RCA: 397] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Accepted: 05/26/2009] [Indexed: 12/17/2022]
Abstract
Enterovirus 71 (EV71) belongs to human enterovirus species A of the genus Enterovirus within the family Picornaviridae. EV71, together with coxsackievirus A16 (CVA16), are most frequently associated with hand, foot and mouth disease (HFMD). Although HFMD is considered a mild exanthematous infection, infections involving EV71, but not CVA16, can progress to severe neurological disease, including fatal encephalitis, aseptic meningitis and acute flaccid paralysis. In recent years, epidemic and sporadic outbreaks of neurovirulent EV71 infections have been reported in Taiwan, Malaysia, Singapore, Japan and China. Here, we show that human scavenger receptor class B, member 2 (SCARB2, also known as lysosomal integral membrane protein II or CD36b like-2) is a receptor for EV71. EV71 binds soluble SCARB2 or cells expressing SCARB2, and the binding is inhibited by an antibody to SCARB2. Expression of human SCARB2 enables normally unsusceptible cell lines to support EV71 propagation and develop cytopathic effects. EV71 infection is hampered by the antibody to SCARB2 and soluble SCARB2. SCARB2 also supports the infection of the milder pathogen CVA16. The identification of SCARB2 as an EV71 and CVA16 receptor contributes to a better understanding of the pathogenicity of these viruses.
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Affiliation(s)
- Seiya Yamayoshi
- Department of Microbiology and Immunology, Tokyo Metropolitan Institute for Neuroscience, Tokyo Metropolitan Organization for Medical Research, Tokyo, Japan
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Kawabata Y, Takemura T, Hebisawa A, Ogura T, Yamaguchi T, Kuriyama T, Nagai S, Sakatani M, Chida K, Sakai F, Park J, Colby TV. Eosinophilia in bronchoalveolar lavage fluid and architectural destruction are features of desquamative interstitial pneumonia. Histopathology 2008; 52:194-202. [PMID: 18184268 DOI: 10.1111/j.1365-2559.2007.02930.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS Desquamative interstitial pneumonia (DIP) is a rare pattern of diffuse parenchymal lung disease known to overlap with respiratory bronchiolitis-interstitial lung disease (RB-ILD). The aim was to review biopsy-proven cases of DIP to investigate further the clinical, imaging and histological features of this disease. METHODS AND RESULTS Twenty patients fulfilled the pathological criteria: 19 men and one woman with a mean age of 54 years. Clinical features, bronchoalveolar lavage (BAL) data, radiological findings, pathological findings other than criteria, effect of therapy and outcome were examined. The BAL data for 17 cases revealed marked eosinophilia (mean 18%) and moderate neutrophilia (mean 11%). Computed tomography in 17 patients showed peripheral involvement in all cases with a clear margin in 64% and thin-walled cysts in 35% of cases. Additional pathological features were a distinct lobular distribution (70%) and architectural destruction (70%) with cyst formation (55%). Eighteen of the 19 patients (95%) improved under steroid pulse and/or oral therapy. Sixteen subjects (80%) are alive, three died of other diseases and one died of DIP 74 months after the diagnosis. Percent vital capacity increased significantly and new thin-walled cysts appeared in one case. CONCLUSIONS BAL eosinophilia, lobular distribution and architectural destruction with cyst formation are characteristic features of DIP.
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Affiliation(s)
- Y Kawabata
- Division of Pathology, Saitama Cardiovascular Respiratory Centre, Ohsato, Saitama, Japan
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Tochigi M, Hara H, Goshima J, Kobayashi M, Shimizu H, Yokoyama A, Matsunaga A, Takemura T, Terui T. Cutaneous Munchausen's syndrome caused by self-injections of fermented beans. J Eur Acad Dermatol Venereol 2007; 22:886-7. [PMID: 18070029 DOI: 10.1111/j.1468-3083.2007.02488.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nakajima D, Nagame S, Kuramochi H, Sugita K, Kageyama S, Shiozaki T, Takemura T, Shiraishi F, Goto S. Polycyclic aromatic hydrocarbon generation behavior in the process of carbonization of wood. Bull Environ Contam Toxicol 2007; 79:221-5. [PMID: 17639321 DOI: 10.1007/s00128-007-9177-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2007] [Accepted: 06/01/2007] [Indexed: 05/16/2023]
Abstract
PAH generation behaviors in carbonization were compared, using cypress, chestnut, and bamboo as samples. Generation of tarry matter was almost completed by the time the temperature reached 400 degrees C, while generation of PAHs continued until the temperature reached 1,000 degrees C. The weight of tarry matter per unit sample weight was large with bamboo, while the amount of PAHs was large with cypress. Of the 15 types of PAHs measured this time, the largest amount collected was fluorene, followed by phenanthrene and anthracene. The amount of PAHs generated accounted for 6 x 10(-6) to 16 x 10(-6) of the weight of the wood samples.
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Affiliation(s)
- D Nakajima
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
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Yamaguchi M, Tanabe S, Nakajima S, Takemura T, Ogita K, Kuwayama H, Sakata I, Miyaki S, Suzuki K, Namiki H, Uzuka Y, Sarashina T. Comparison of Nonmetal and Metal Hydrophilic Photosensitizer, ATX-S10 (Na) and ATN-2, Binding with Human Serum Proteins Using Spectrophotometry¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2004.tb00081.x] [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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50
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Hanagata N, Takemura T, Monkawa A, Ikoma T, Tanaka J. Phenotype and gene expression pattern of osteoblast-like cells cultured on polystyrene and hydroxyapatite with pre-adsorbed type-I collagen. J Biomed Mater Res A 2007; 83:362-71. [PMID: 17450577 DOI: 10.1002/jbm.a.31240] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Hydroxyapatite and type-I collagen are major components of bone matrix. We compared phenotype and gene expression pattern of osteoblast-like cells cultured on HAp and HAp with pre-adsorbed type-I collagen from neutral solutions (HAp/NCs) with those of tissue culture grade polystyrene (TCPS) and TCPS with the collagen (TCPS/NCs). In initial cell attachment, the cells tensely spread on TCPS, while loosely spread on TCPS/NCs, HAp, and HAp/NCs. The levels of expressed integrin alpha2 and alpha5 subunits were not significantly different among any surfaces. Although the cells on HAp/NCs directly attached with the same collagen molecules as TCPS/NCs, mineralization was observed in only TCPS/NCs. The basal substrates (TCPS and HAp) greatly influenced osteoblast maturation even in the surfaces with pre-adsorbed collagen, since mineralization was induced by TCPS, but not by HAp. Gene expression pattern analyzed with DNA microarray also supported greater influence of basal substrates than pre-adsorbed collagen. In addition, comprehensive gene expression analyses revealed that HAp and HAp/NCs specifically up-regulated Ly6a and Tmem37 genes, while down-regulated Ifitm5 gene.
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Affiliation(s)
- Nobutaka Hanagata
- Biomaterials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
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