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  1. Conference proceedings ; Online: From Predictability to Controllability

    Miyoshi, T. / Sun, Q. / Terasaki, K. / Maejima, Y.

    XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)

    Control Simulation Experiment

    2023  

    Abstract: The Observing Systems Simulation Experiment (OSSE) is a powerful approach to evaluate observing systems and data assimilation methods in numerical weather prediction (NWP). In this study, we extend the OSSE and design the Control Simulation Experiment ( ... ...

    Abstract The Observing Systems Simulation Experiment (OSSE) is a powerful approach to evaluate observing systems and data assimilation methods in numerical weather prediction (NWP). In this study, we extend the OSSE and design the Control Simulation Experiment (CSE), in which we add perturbations to the nature run (NR) and try to modify it to a desired state. Investigating what perturbations are effective to avoid a high-impact weather event would be useful to understand the controllability of such an event. Since the weather system is chaotic, and even more so for disturbances, small differences generally lead to big differences, particularly for high-impact weather events. This suggests potentially effective control, i.e., small interventions would lead to big differences for high-impact weather events. We first tested this idea with the Lorenz-63 3-variable model and found an effective approach to control the trajectory to stay in one side of the Lorenz’s butterfly attractor without shifting to the other. Next, we tested with the Lorenz-96 40-variable model to avoid the occurrences of extreme values, mimicking to avoid extreme events in NWP. Finally, we further extended the idea to test with realistic global and regional NWP models for a typhoon case and a local heavy rainfall case, respectively. This presentation will summarize the concept and methodology of CSE with some proof-of-concept demonstrations with the toy models and realistic NWP models. This is an attempt to a potential paradigm change of NWP research from decades of predictability to the new era of controllability.
    Subject code 306
    Language English
    Publishing country de
    Document type Conference proceedings ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Gastrointestinal: Pembrolizumab-induced gastric ulcer occurring as an immune-related adverse event.

    Terasaki, K / Ueno, A / Mizuno, C / Shima, T / Okanoue, T

    Journal of gastroenterology and hepatology

    2022  Volume 37, Issue 8, Page(s) 1472

    MeSH term(s) Antibodies, Monoclonal, Humanized/adverse effects ; Antineoplastic Agents, Immunological/adverse effects ; Humans ; Stomach Ulcer/chemically induced
    Chemical Substances Antibodies, Monoclonal, Humanized ; Antineoplastic Agents, Immunological ; pembrolizumab (DPT0O3T46P)
    Language English
    Publishing date 2022-02-09
    Publishing country Australia
    Document type Journal Article ; Review
    ZDB-ID 632882-9
    ISSN 1440-1746 ; 0815-9319
    ISSN (online) 1440-1746
    ISSN 0815-9319
    DOI 10.1111/jgh.15788
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Mechanistic insight into the efficient packaging of antigenomic S RNA into Rift Valley fever virus particles.

    Tercero, Breanna / Terasaki, Kaori / Narayanan, Krishna / Makino, Shinji

    Frontiers in cellular and infection microbiology

    2023  Volume 13, Page(s) 1132757

    Abstract: Rift Valley fever virus (RVFV), a bunyavirus, has a single-stranded, negative-sense tri-segmented RNA genome, consisting of L, M and S RNAs. An infectious virion carries two envelope glycoproteins, Gn and Gc, along with ribonucleoprotein complexes ... ...

    Abstract Rift Valley fever virus (RVFV), a bunyavirus, has a single-stranded, negative-sense tri-segmented RNA genome, consisting of L, M and S RNAs. An infectious virion carries two envelope glycoproteins, Gn and Gc, along with ribonucleoprotein complexes composed of encapsidated viral RNA segments. The antigenomic S RNA, which serves as the template of the mRNA encoding a nonstructural protein, NSs, an interferon antagonist, is also efficiently packaged into RVFV particles. An interaction between Gn and viral ribonucleoprotein complexes, including the direct binding of Gn to viral RNAs, drives viral RNA packaging into RVFV particles. To understand the mechanism of efficient antigenomic S RNA packaging in RVFV, we identified the regions in viral RNAs that directly interact with Gn by performing UV-crosslinking and immunoprecipitation of RVFV-infected cell lysates with anti-Gn antibody followed by high-throughput sequencing analysis (CLIP-seq analysis). Our data suggested the presence of multiple Gn-binding sites in RVFV RNAs, including a prominent Gn-binding site within the 3' noncoding region of the antigenomic S RNA. We found that the efficient packaging of antigenomic S RNA was abrogated in a RVFV mutant lacking a part of this prominent Gn-binding site within the 3' noncoding region. Also, the mutant RVFV, but not the parental RVFV, triggered the early induction of interferon-β mRNA expression after infection. These data suggest that the direct binding of Gn to the RNA element within the 3' noncoding region of the antigenomic S RNA promoted the efficient packaging of antigenomic S RNA into virions. Furthermore, the efficient packaging of antigenomic S RNA into RVFV particles, driven by the RNA element, facilitated the synthesis of viral mRNA encoding NSs immediately after infection, resulting in the suppression of interferon-β mRNA expression.
    MeSH term(s) Animals ; Rift Valley fever virus ; RNA, Viral ; RNA, Messenger ; Interferon-beta ; Ribonucleoproteins
    Chemical Substances RNA, Viral ; RNA, Messenger ; Interferon-beta (77238-31-4) ; Ribonucleoproteins
    Language English
    Publishing date 2023-02-16
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2023.1132757
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Identification of a 1.4-kb-Long Sequence Located in the nsp12 and nsp13 Coding Regions of SARS-CoV-2 Genomic RNA That Mediates Efficient Viral RNA Packaging.

    Terasaki, Kaori / Narayanan, Krishna / Makino, Shinji

    Journal of virology

    2023  Volume 97, Issue 7, Page(s) e0065923

    Abstract: The specific packaging of the viral RNA genome into virus particles is an essential step in the replication cycle of coronaviruses (CoVs). Using a single-cycle, replicable severe acute respiratory syndrome CoV-2 (SARS-CoV-2) mutant, we demonstrated the ... ...

    Abstract The specific packaging of the viral RNA genome into virus particles is an essential step in the replication cycle of coronaviruses (CoVs). Using a single-cycle, replicable severe acute respiratory syndrome CoV-2 (SARS-CoV-2) mutant, we demonstrated the preferential packaging of the SARS-CoV-2 genomic RNA into purified virus particles. Furthermore, based on the sequence of an efficiently packaged defective interfering RNA of SARS-CoV, a closely related CoV, that was generated after serial passages of SARS-CoV in cell culture, we designed a series of replication-competent SARS-CoV-2 minigenome RNAs to identify the specific viral RNA region that is important for SARS-CoV-2 RNA packaging into virus particles. We showed that a 1.4-kb-long sequence, derived from the nsp12 and nsp13 coding regions of the SARS-CoV-2 genomic RNA, is required for the efficient packaging of SARS-CoV-2 minigenome RNA into SARS-CoV-2 particles. In addition, we also showed that the presence of possibly the entire 1.4-kb-long sequence is important for the efficient packaging of SARS-CoV-2 RNA. Our findings highlight the differences between the RNA packaging sequence identified in SARS-CoV-2, a Sarbecovirus, and the packaging signal of mouse hepatitis virus (MHV), an Embecovirus, which is a 95-nt-long sequence located at the nsp15 coding region of MHV genomic RNA. Collectively, our data imply that both the location and the sequence/structural features of the RNA element(s) that drives the selective and efficient packaging of viral genomic RNA are not conserved among the subgenera Embecovirus and Sarbecovirus within the Betacoronavirus genus.
    MeSH term(s) COVID-19/virology ; Murine hepatitis virus/genetics ; Murine hepatitis virus/metabolism ; RNA, Viral/genetics ; RNA, Viral/metabolism ; SARS-CoV-2/genetics ; SARS-CoV-2/metabolism ; Viral Genome Packaging/genetics ; Viral Proteins/genetics ; Viral Proteins/metabolism
    Chemical Substances RNA, Viral ; nsp2 protein, SARS-CoV-2 ; papain-like protease, SARS-CoV-2 (EC 3.4.22.2) ; Viral Proteins
    Language English
    Publishing date 2023-06-27
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 80174-4
    ISSN 1098-5514 ; 0022-538X
    ISSN (online) 1098-5514
    ISSN 0022-538X
    DOI 10.1128/jvi.00659-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Structural Modification of DNA Studied by Scanning Tunneling Microscopy.

    Terasaki, Kohei / Yokoyama, Takashi

    The journal of physical chemistry. B

    2019  Volume 123, Issue 8, Page(s) 1780–1783

    Abstract: In addition to the well-known double-helix structure of deoxyribonucleic acid (DNA), theoretical simulations have predicted structural variants, such as cross and T-shaped formations. The direct visualization of individual DNA molecules by scanning probe ...

    Abstract In addition to the well-known double-helix structure of deoxyribonucleic acid (DNA), theoretical simulations have predicted structural variants, such as cross and T-shaped formations. The direct visualization of individual DNA molecules by scanning probe microscopy should be able to identify these structures. In this study, we examine various structures of DNA deposited on Au(111) by using an electrospray method and analyzing with a low-temperature scanning tunneling microscope. We could identify in detail several interesting structures. In particular, we found that double-stranded DNAs are partially unraveled into single-stranded DNAs and we confirmed the presence of T-shaped DNA structures.
    MeSH term(s) DNA/chemistry ; Microscopy, Scanning Tunneling ; Nucleic Acid Conformation
    Chemical Substances DNA (9007-49-2)
    Language English
    Publishing date 2019-02-14
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1520-5207
    ISSN (online) 1520-5207
    DOI 10.1021/acs.jpcb.8b12100
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Characterization of the Molecular Interactions That Govern the Packaging of Viral RNA Segments into Rift Valley Fever Phlebovirus Particles.

    Tercero, Breanna / Narayanan, Krishna / Terasaki, Kaori / Makino, Shinji

    Journal of virology

    2021  Volume 95, Issue 14, Page(s) e0042921

    Abstract: Rift Valley fever phlebovirus (RVFV) has a single-stranded, negative-sense RNA genome, consisting of L, M, and S segments. The virion carries two envelope glycoproteins, Gn and Gc, along with ribonucleoprotein complexes (RNPs), composed of encapsidated ... ...

    Abstract Rift Valley fever phlebovirus (RVFV) has a single-stranded, negative-sense RNA genome, consisting of L, M, and S segments. The virion carries two envelope glycoproteins, Gn and Gc, along with ribonucleoprotein complexes (RNPs), composed of encapsidated genomes carrying N protein and the viral polymerase, L protein. A quantitative analysis of the profile of viral RNA segments packaged into RVFV particles showed that all three genomic RNA segments had similar packaging abilities, whereas among antigenomic RNA segments, the antigenomic S RNA, which serves as the template for the transcription of mRNA expressing the RVFV virulence factor, NSs, displayed a significantly higher packaging ability. To delineate the factor(s) governing the packaging of RVFV RNA segments, we characterized the interactions between Gn and viral RNPs in RVFV-infected cells. Coimmunoprecipitation analysis demonstrated the interaction of Gn with N protein, L protein, and viral RNAs in RVFV-infected cells. Furthermore, UV-cross-linking and immunoprecipitation analysis revealed, for the first time in bunyaviruses, the presence of a direct interaction between Gn and all the viral RNA segments in RVFV-infected cells. Notably, analysis of the ability of Gn to bind to RVFV RNA segments indicated a positive correlation with their respective packaging abilities and highlighted a binding preference of Gn for antigenomic S RNA, among the antigenomic RNA segments, suggesting the presence of a selection mechanism for antigenomic S RNA incorporation into infectious RVFV particles. Collectively, the results of our study illuminate the importance of a direct interaction between Gn and viral RNA segments in determining their efficiency of incorporation into RVFV particles.
    MeSH term(s) Animals ; Cell Line ; Chlorocebus aethiops ; RNA, Viral ; Ribonucleoproteins/metabolism ; Rift Valley fever virus/genetics ; Vero Cells ; Viral Envelope Proteins/genetics ; Viral Genome Packaging ; Viral Packaging Sequence ; Virion/genetics
    Chemical Substances RNA, Viral ; Ribonucleoproteins ; Viral Envelope Proteins
    Language English
    Publishing date 2021-06-24
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 80174-4
    ISSN 1098-5514 ; 0022-538X
    ISSN (online) 1098-5514
    ISSN 0022-538X
    DOI 10.1128/JVI.00429-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: [Ingenuity for the Uniportal Video-assisted Thoracic Surgery as a Minimally Invasive Procedure].

    Tanaka, Nobuhiro / Terasaki, Kento / Yuki, Hirotaka / Takayama, Tetsuya / Saito, Daisuke / Yoshida, Shuhei / Matsumoto, Isao

    Kyobu geka. The Japanese journal of thoracic surgery

    2023  Volume 76, Issue 1, Page(s) 59–64

    Abstract: Uniportal video-assisted thoracic surgery (VATS) is a minimally invasive, wound-reducing approach performed mainly in Europe and Asia. This approach is rapidly gaining popularity in Japan. We performed a technique with layer awareness, grasping and ... ...

    Abstract Uniportal video-assisted thoracic surgery (VATS) is a minimally invasive, wound-reducing approach performed mainly in Europe and Asia. This approach is rapidly gaining popularity in Japan. We performed a technique with layer awareness, grasping and dissection of tissue membrane even in uniport VATS as for open thoracotomy or multiport VATS. Interference is a problem with uniport VATS because surgical instruments are inserted and removed through a small incision of 4 cm or less;there-fore, instrument selection is critical. The use of curved forceps ensures more working space and reduced interference. The incision should be placed between the 4th or 5th intercostal space and should be 3.5 cm in size at our institution. For vascular manipulation, ligation and transection can be used when it is difficult to divide vessels with a stapler. During mediastinal lymph node dissection, a precise view can be achieved with the use of a custom-made spatula. Uniport VATS was performed in 51 cases from January 2019 to June 2022. Although recurrence was observed in two cases, no serious perioperative complications were observed, and the procedures were performed safely.
    MeSH term(s) Humans ; Thoracic Surgery, Video-Assisted ; Lymph Node Excision ; Thoracotomy ; Japan
    Language Japanese
    Publishing date 2023-01-31
    Publishing country Japan
    Document type English Abstract ; Journal Article
    ZDB-ID 603899-2
    ISSN 0021-5252
    ISSN 0021-5252
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Influence of atherosclerotic burden on adult patients with ischemic moyamoya disease: combined analysis of two prospective cohorts.

    Ogasawara, Kuniaki / Akamatsu, Yosuke / Chida, Kohei / Kobayashi, Masakazu / Yoshida, Kenji / Fujiwara, Shunrou / Terasaki, Kazunori / Koji, Takahiro / Kubo, Yoshitaka

    Neurological research

    2023  Volume 45, Issue 11, Page(s) 1011–1018

    Abstract: Objective: This study aimed to determine the influence of atherosclerotic risk factors on initial and further cerebrovascular events in adult patients with moyamoya disease (MMD) by combined analysis of two prospective cohorts in which patients received ...

    Abstract Objective: This study aimed to determine the influence of atherosclerotic risk factors on initial and further cerebrovascular events in adult patients with moyamoya disease (MMD) by combined analysis of two prospective cohorts in which patients received pharmacotherapy alone and were prospectively followed-up for 5 years.
    Methods: In 71 patients, smoking status, home blood pressure, hemoglobin (Hb)A1c and low-density lipoprotein cholesterol (LDL-chol) were checked at inclusion and at further cerebrovascular event or at the end of 5-year follow-up. When a patient had daily smoking, increased HbA1c, increased LDL-chol, increased systolic blood pressure, or increased diastolic blood pressure, the patient was categorized as showing atherosclerotic burden. Angiographic disease progression was determined using changes on magnetic resonance angiography.
    Results: Eleven patients showed angiographic disease progression and seven of these 11 patients experienced further cerebrovascular events during the follow-up period. The remaining 60 patients did not exhibit either condition. At inclusion, the incidence of atherosclerotic burden was significantly greater in patients without angiographic disease progression (80%) than in those with such progression (45%;
    Conclusions: Adult patients with ischemic MMD who do not exhibit angiographic disease progression appear more strongly affected by atherosclerotic burden at the initial onset of cerebrovascular events than those exhibiting angiographic disease progression. A reduction in atherosclerotic burden by medical treatments for the former patients prevents further cerebrovascular events.
    Language English
    Publishing date 2023-08-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 424428-x
    ISSN 1743-1328 ; 0161-6412
    ISSN (online) 1743-1328
    ISSN 0161-6412
    DOI 10.1080/01616412.2023.2252285
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Effect of the addition of

    Ogasawara, Kuniaki / Takahashi, Tatsuhiko / Igarashi, Suguru / Yabuki, Masahiro / Omori, Daisuke / Akamatsu, Yosuke / Chida, Kohei / Kobayashi, Masakazu / Fujiwara, Shunrou / Terasaki, Kazunori

    Annals of nuclear medicine

    2023  Volume 37, Issue 5, Page(s) 280–288

    Abstract: Objective: The present prospective study aimed to determine whether the addition of : Methods: Oxygen extraction fraction (OEF) and brain perfusion were assessed using : Results: Significant correlations were observed between the PET-OEF and ... ...

    Abstract Objective: The present prospective study aimed to determine whether the addition of
    Methods: Oxygen extraction fraction (OEF) and brain perfusion were assessed using
    Results: Significant correlations were observed between the PET-OEF and relative SPECT-IMP uptake (correlation coefficient, - 0.683) and relative SPECT-IMZ/IMP uptake (correlation coefficient, 0.875). The area under the receiver operating characteristic curve for detecting misery perfusion (PET-OEF > 51.3%) was significantly greater for the relative SPECT-IMZ/IMP uptake than for the relative SPECT-IMP uptake (difference between areas, 0.080; p = 0.0004). The sensitivity, specificity, and positive- and negative-predictive values for the relative SPECT-IMZ/IMP uptake for detecting misery perfusion were 100%, 92%, 81%, and 100%, respectively. The specificity and positive-predictive value were significantly greater for the relative SPECT-IMZ/IMP uptake than for the relative SPECT-IMP uptake.
    Conclusions: The addition of IMZ SPECT to brain perfusion SPECT improves the detection accuracy of misery perfusion on PET in adult patients with ischemic MMD.
    MeSH term(s) Humans ; Adult ; Moyamoya Disease/diagnostic imaging ; Prospective Studies ; Tomography, X-Ray Computed ; Tomography, Emission-Computed, Single-Photon/methods ; Brain/diagnostic imaging ; Brain/blood supply ; Perfusion ; Cerebrovascular Circulation
    Chemical Substances Iodine-123 (8YWR746RPQ) ; iomazenil (7DVX185FLQ)
    Language English
    Publishing date 2023-02-18
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1146984-5
    ISSN 1864-6433 ; 0914-7187
    ISSN (online) 1864-6433
    ISSN 0914-7187
    DOI 10.1007/s12149-023-01825-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Measurement of basic characteristics of scintillation-type radiation survey meters with multi-pixel photon counter.

    Fujibuchi, Toshioh / Toyoda, Takatoshi / Terasaki, Kento

    Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

    2018  Volume 140, Page(s) 12–17

    Abstract: The basic characteristics of three low-cost radiation survey meters using multi-pixel photon counters (MPPC), the C12137, T-GMK2-S, and iMetry, were measured. The linearity of the dose rate was confirmed over the full range of each instrument. All the ... ...

    Abstract The basic characteristics of three low-cost radiation survey meters using multi-pixel photon counters (MPPC), the C12137, T-GMK2-S, and iMetry, were measured. The linearity of the dose rate was confirmed over the full range of each instrument. All the survey meters could obtain gamma-ray energy spectra, with an accuracy within ± 30% of the theoretical value. These survey meters are therefore applicable for radiation management.
    Language English
    Publishing date 2018-06-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1142596-9
    ISSN 1872-9800 ; 0883-2889 ; 0969-8043
    ISSN (online) 1872-9800
    ISSN 0883-2889 ; 0969-8043
    DOI 10.1016/j.apradiso.2018.06.010
    Database MEDical Literature Analysis and Retrieval System OnLINE

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