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  1. Article: Negative to positive axial thermal expansion switching of an organic crystal: contribution to multistep photoactuation.

    Hasebe, Shodai / Hagiwara, Yuki / Ueno, Takashi / Asahi, Toru / Koshima, Hideko

    Chemical science

    2023  Volume 15, Issue 3, Page(s) 1088–1097

    Abstract: Materials displaying negative thermal expansion (NTE), in contrast to typical materials with positive thermal expansion (PTE), are attractive for both fundamental research and practical applications, including the development of composites with near-zero ...

    Abstract Materials displaying negative thermal expansion (NTE), in contrast to typical materials with positive thermal expansion (PTE), are attractive for both fundamental research and practical applications, including the development of composites with near-zero thermal expansion. A recent data mining study revealed that approximately 34% of organic crystals may present NTE, indicating that NTE in organic crystals is much more common than generally believed. However, organic crystals that switch from NTE to PTE or
    Language English
    Publishing date 2023-12-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 2559110-1
    ISSN 2041-6539 ; 2041-6520
    ISSN (online) 2041-6539
    ISSN 2041-6520
    DOI 10.1039/d3sc04796b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Monitoring Autophagy Flux and Activity: Principles and Applications.

    Ueno, Takashi / Komatsu, Masaaki

    BioEssays : news and reviews in molecular, cellular and developmental biology

    2020  Volume 42, Issue 11, Page(s) e2000122

    Abstract: Macroautophagy is a major degradation mechanism of cell components via the lysosome. Macroautophagy greatly contributes to not only cell homeostasis but also the prevention of various diseases. Because macroautophagy proceeds through multi-step reactions, ...

    Abstract Macroautophagy is a major degradation mechanism of cell components via the lysosome. Macroautophagy greatly contributes to not only cell homeostasis but also the prevention of various diseases. Because macroautophagy proceeds through multi-step reactions, researchers often face a persistent question of how macroautophagic activity can be measured correctly. To make a straightforward determination of macroautophagic activity, diverse monitoring assays have been developed. Direct measurement of lysosome-dependent degradation of radioisotopically labeled cell proteins has long been applied. Meanwhile, indirect monitoring procedures have been developed. In these assays, autophagosome marker proteins, microtubule-associated proteins 1A/1B light chain 3B-II (LC3B-II) and gamma-aminobutyric acid receptor-associated protein-II (GABARAP-II) have been analyzed and the validity of the assays strongly depends on appropriate assessment of the fluctuation of LC3-II and/or GABARAP-II levels in the presence or absence of lysosomal inhibitors. This article describes these monitoring methods, paying special attention to the principles and characteristics of each procedure.
    MeSH term(s) Autophagy ; Homeostasis ; Lysosomes
    Language English
    Publishing date 2020-08-26
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 50140-2
    ISSN 1521-1878 ; 0265-9247
    ISSN (online) 1521-1878
    ISSN 0265-9247
    DOI 10.1002/bies.202000122
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Monitoring Autophagy Flux and Activity: Principles and Applications

    Ueno, Takashi / Komatsu, Masaaki

    BioEssays. 2020 Nov., v. 42, no. 11

    2020  

    Abstract: Macroautophagy is a major degradation mechanism of cell components via the lysosome. Macroautophagy greatly contributes to not only cell homeostasis but also the prevention of various diseases. Because macroautophagy proceeds through multi‐step reactions, ...

    Abstract Macroautophagy is a major degradation mechanism of cell components via the lysosome. Macroautophagy greatly contributes to not only cell homeostasis but also the prevention of various diseases. Because macroautophagy proceeds through multi‐step reactions, researchers often face a persistent question of how macroautophagic activity can be measured correctly. To make a straightforward determination of macroautophagic activity, diverse monitoring assays have been developed. Direct measurement of lysosome‐dependent degradation of radioisotopically labeled cell proteins has long been applied. Meanwhile, indirect monitoring procedures have been developed. In these assays, autophagosome marker proteins, microtubule‐associated proteins 1A/1B light chain 3B‐II (LC3B‐II) and gamma‐aminobutyric acid receptor‐associated protein‐II (GABARAP‐II) have been analyzed and the validity of the assays strongly depends on appropriate assessment of the fluctuation of LC3‐II and/or GABARAP‐II levels in the presence or absence of lysosomal inhibitors. This article describes these monitoring methods, paying special attention to the principles and characteristics of each procedure.
    Keywords autophagosomes ; gamma-aminobutyric acid ; homeostasis ; lysosomes ; macroautophagy
    Language English
    Dates of publication 2020-11
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 50140-2
    ISSN 1521-1878 ; 0265-9247
    ISSN (online) 1521-1878
    ISSN 0265-9247
    DOI 10.1002/bies.202000122
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Measuring Nonselective and Selective Autophagy in the Liver.

    Ueno, Takashi / Komatsu, Masaaki

    Methods in molecular biology (Clifton, N.J.)

    2019  Volume 1880, Page(s) 535–540

    Abstract: Administration of leupeptin, a specific inhibitor of lysosomal cysteine proteinases, to starved rats or mice inhibits autolysosomal protein degradation and results in accumulation of autolysosomes in their livers. Immunoblotting of liver homogenates to ... ...

    Abstract Administration of leupeptin, a specific inhibitor of lysosomal cysteine proteinases, to starved rats or mice inhibits autolysosomal protein degradation and results in accumulation of autolysosomes in their livers. Immunoblotting of liver homogenates to examine autophagic flux in vivo reveals elevated levels of the selective autophagy substrate p62 and the autophagosomal membrane protein LC3-II in the livers of leupeptin-treated animals. Percoll density gradient centrifugation can be used to isolate autolysosomes from the livers of untreated and leupeptin-treated animals. Moreover, autolysosomes can be examined for the presence of sequestered cytoplasmic proteins as well as degradation intermediates.
    MeSH term(s) Animals ; Autophagosomes/drug effects ; Autophagosomes/metabolism ; Autophagy/drug effects ; Autophagy/physiology ; Centrifugation, Density Gradient/instrumentation ; Centrifugation, Density Gradient/methods ; Cysteine Proteases/metabolism ; Cysteine Proteinase Inhibitors/pharmacology ; Leupeptins/pharmacology ; Liver/cytology ; Liver/drug effects ; Liver/metabolism ; Lysosomes/drug effects ; Lysosomes/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Models, Animal ; Rats ; Rats, Wistar
    Chemical Substances Cysteine Proteinase Inhibitors ; Leupeptins ; Cysteine Proteases (EC 3.4.-) ; leupeptin (J97339NR3V)
    Language English
    Publishing date 2019-01-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-4939-8873-0_34
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Network analysis of the relationship between social support and quality of life in patients with epilepsy.

    Takahashi, Kento / Fujikawa, Mayu / Ueno, Takashi / Ogawa, Maimi / Nakasato, Nobukazu / Maeda, Shunta

    Epilepsy & behavior : E&B

    2023  Volume 149, Page(s) 109504

    Abstract: Background: Identifying important types of social support for patients with epilepsy is valuable to construct an effective system for support in daily life. However, previous studies have been inconsistent in identifying the most important types of ... ...

    Abstract Background: Identifying important types of social support for patients with epilepsy is valuable to construct an effective system for support in daily life. However, previous studies have been inconsistent in identifying the most important types of social support for better quality of life (QOL) due to the high correlations between the social support factors. The present study employed network visualization analysis to identify the relationships between QOL and types of social support.
    Methods: Two hundred and eighty-three patients with epilepsy (age range: 18 to 75 years) completed questionnaires of the Medical Outcomes Study Social Support Survey (MOS-SSS) and the Quality of Life in Epilepsy Inventory-31-Problems in the epilepsy monitoring unit at Tohoku University. The MOS-SSS was established to measure the four types of social support including emotional/informational support, tangible support, affectionate support, and positive social interaction. Our network visualization analysis represented the entire structure of the interrelationships between the four functions of social support and QOL. In addition, the relative importance of each function of social support were estimated by the centrality indices using three commonly used centrality indices: strength, betweenness, and closeness.
    Results: The visualized network showed that positive social interaction and emotional/informational support were directly associated with QOL, whereas tangible support and affectionate support were not. Positive social interaction had the highest value for all three centrality indices and affectionate support had the second highest. Therefore, positive social interaction had the strongest connection to the other functions of support.
    Discussion: Our network analysis and centrality indices findings showed that positive social interaction is the most important within the network of four types of social support and QOL. The emotional informational function is also important for directly improving QOL but is less related to the other functions. The affectionate function might be an indicator of whether a patient has a foundational relationship that leads to other functions of support.
    Conclusion: These results showed the importance of increasing positive social interaction in the social environment of patients with epilepsy. Therefore, practitioners need to encourage patients with epilepsy to increase their positive social interactions such as doing something enjoyable with others or someone to associate for relaxation to ensure high QOL. Connections outside the epilepsy support are important, such as having fun regardless of epilepsy, rather than only providing emotional or tangible support for epilepsy.
    MeSH term(s) Humans ; Adolescent ; Young Adult ; Adult ; Middle Aged ; Aged ; Quality of Life/psychology ; Surveys and Questionnaires ; Social Support ; Emotions ; Epilepsy
    Language English
    Publishing date 2023-11-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2010587-3
    ISSN 1525-5069 ; 1525-5050
    ISSN (online) 1525-5069
    ISSN 1525-5050
    DOI 10.1016/j.yebeh.2023.109504
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Establishment of a simultaneous assay for lemborexant, a novel dual orexin receptor antagonist, and its three metabolites, and its application to a clinical protein binding study.

    Mano, Yuji / Ueno, Takashi / Hotta, Koichiro

    Journal of pharmaceutical and biomedical analysis

    2020  Volume 187, Page(s) 113359

    Abstract: A simultaneous assay for the determination of lemborexant and three metabolites (M4, M9, and M10) in human plasma and phosphate buffered saline (PBS) was developed and validated using liquid chromatography with tandem mass spectrometry, in support of ... ...

    Abstract A simultaneous assay for the determination of lemborexant and three metabolites (M4, M9, and M10) in human plasma and phosphate buffered saline (PBS) was developed and validated using liquid chromatography with tandem mass spectrometry, in support of plasma protein binding (PPB) studies. The analytes were extracted from plasma and PBS by solid phase extraction and then chromatographed on a reversed phase C18 column to ensure peak separation of three metabolites with the same mass transition. The analytes and the corresponding deuterated substances used as an IS were detected in the positive ion mode by multiple reaction monitoring. Lemborexant and three metabolites were quantifiable from 4 and 300 pg/mL in PBS and plasma, respectively, without any carryover. Extraction recovery was almost complete without matrix effects. The accuracy and precision in the intra- and inter-assay reproducibility were within the criteria as well as in the dilution integrity. Stability of the four analytes was ensured to cover duration of equilibrium dialysis and storage of samples. The established method was applied to an ex vivo PPB study in humans.
    MeSH term(s) Chromatography, Liquid/methods ; Humans ; Orexin Receptor Antagonists/analysis ; Orexin Receptor Antagonists/metabolism ; Protein Binding ; Pyridines/analysis ; Pyridines/metabolism ; Pyrimidines/analysis ; Pyrimidines/metabolism ; Reproducibility of Results ; Solid Phase Extraction ; Tandem Mass Spectrometry/methods
    Chemical Substances Orexin Receptor Antagonists ; Pyridines ; Pyrimidines ; lemborexant (0K5743G68X)
    Language English
    Publishing date 2020-05-13
    Publishing country England
    Document type Journal Article ; Validation Study
    ZDB-ID 604917-5
    ISSN 1873-264X ; 0731-7085
    ISSN (online) 1873-264X
    ISSN 0731-7085
    DOI 10.1016/j.jpba.2020.113359
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Physiologically-based pharmacokinetic modeling to predict drug interactions of lemborexant with CYP3A inhibitors.

    Ueno, Takashi / Miyajima, Yukiko / Landry, Ishani / Lalovic, Bojan / Schuck, Edgar

    CPT: pharmacometrics & systems pharmacology

    2021  Volume 10, Issue 5, Page(s) 455–466

    Abstract: Lemborexant, a recently approved dual orexin receptor antagonist for treatment of adults with insomnia, is eliminated primarily by cytochrome P450 (CYP)3A metabolism. The recommended dose of lemborexant is 5 mg once per night, with a maximum recommended ... ...

    Abstract Lemborexant, a recently approved dual orexin receptor antagonist for treatment of adults with insomnia, is eliminated primarily by cytochrome P450 (CYP)3A metabolism. The recommended dose of lemborexant is 5 mg once per night, with a maximum recommended dose of 10 mg once daily. A physiologically-based pharmacokinetic (PBPK) model for lemborexant was developed and applied to integrate data obtained from in vivo drug-drug interaction (DDI) assessments, and to further explore lemborexant interaction with CYP3A inhibitors and inducers. The model predictions were in good agreement with observed pharmacokinetic data and with DDI results from clinical studies with CYP3A inhibitors, itraconazole and fluconazole. The model further predicted that DDI effects of weak CYP3A inhibitors (fluoxetine and ranitidine) are weak, and effects of moderate inhibitors (erythromycin and verapamil) are moderate. Based on the PBPK simulations and clinical efficacy and safety data, the maximum daily recommended lemborexant dose when administered with weak CYP3A inhibitors is 5 mg; co-administration of moderate and strong inhibitors should be avoided except in countries where 2.5 mg has been approved.
    MeSH term(s) Computer Simulation ; Cytochrome P-450 CYP3A Inhibitors/pharmacokinetics ; Drug Interactions ; Humans ; Orexin Receptor Antagonists/administration & dosage ; Orexin Receptor Antagonists/pharmacokinetics ; Pyridines/administration & dosage ; Pyridines/pharmacokinetics ; Pyrimidines/administration & dosage ; Pyrimidines/pharmacokinetics
    Chemical Substances Cytochrome P-450 CYP3A Inhibitors ; Orexin Receptor Antagonists ; Pyridines ; Pyrimidines ; lemborexant (0K5743G68X)
    Language English
    Publishing date 2021-05-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2697010-7
    ISSN 2163-8306 ; 2163-8306
    ISSN (online) 2163-8306
    ISSN 2163-8306
    DOI 10.1002/psp4.12606
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Different Neural Responses for Unfinished Sentence as a Conventional Indirect Refusal Between Native and Non-native Speakers: An Event-Related Potential Study.

    Wang, Min / Tokimoto, Shingo / Song, Ge / Ueno, Takashi / Koizumi, Masatoshi / Kiyama, Sachiko

    Frontiers in psychology

    2022  Volume 13, Page(s) 806023

    Abstract: Refusal is considered a face-threatening act (FTA), since it contradicts the inviter's expectations. In the case of Japanese, native speakers (NS) are known to prefer to leave sentences unfinished for a conventional indirect refusal. Successful ... ...

    Abstract Refusal is considered a face-threatening act (FTA), since it contradicts the inviter's expectations. In the case of Japanese, native speakers (NS) are known to prefer to leave sentences unfinished for a conventional indirect refusal. Successful comprehension of this indirect refusal depends on whether the addressee is fully conventionalized to the preference for syntactic unfinishedness so that they can identify the true intention of the refusal. Then, non-native speakers (NNS) who are not fully accustomed to the convention may be confused by the indirect style. In the present study, we used event-related potentials (ERPs) of electroencephalography in an attempt to differentiate the neural substrates for perceiving unfinished sentences in a conventionalized indirect refusal as an FTA between NS and NNS, in terms of the unfinishedness and indirectness of the critical sentence. In addition, we examined the effects of individual differences in mentalization, or the theory of mind, which refers to the ability to infer the mental states of others. We found several different ERP effects for these refusals between NS and NNS. NNS induced stronger P600 effects for the unfinishedness of the refusal sentences, suggesting their perceived syntactic anomaly. This was not evoked in NS. NNS also revealed the effects of N400 and P300 for the indirectness of refusal sentences, which can be interpreted as their increased processing load for pragmatic processing in the inexperienced contextual flow. We further found that the NNS's individual mentalizing ability correlates with the effect of N400 mentioned above, indicating that lower mentalizers evoke higher N400 for indirect refusal. NS, on the contrary, did not yield these effects reflecting the increased pragmatic processing load. Instead, they evoked earlier ERPs of early posterior negativity (EPN) and P200, both of which are known as indices of emotional processing, for finished sentences of refusal than for unfinished ones. We interpreted these effects as a NS's dispreference for finished sentences to realize an FTA, given that unfinished sentences are considered more polite and more conventionalized in Japanese social encounters. Overall, these findings provide evidence that a syntactic anomaly inherent in a cultural convention as well as individual mentalizing ability plays an important role in understanding an indirect speech act of face-threatening refusal.
    Language English
    Publishing date 2022-03-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2022.806023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Early detection of hypervascularization in hepatocellular carcinoma (≤2 cm) on hepatic arterial phase with virtual monochromatic imaging: Comparison with low-tube voltage CT.

    Yamaguchi, Haruomi / Ichikawa, Tomoaki / Morisaka, Hiroyuki / Akai, Hiroyuki / Izuka, Keisuke / Ueno, Takashi / Abe, Osamu / Tsushima, Yoshito

    Medicine

    2023  Volume 102, Issue 39, Page(s) e34774

    Abstract: This study aims to assess the diagnostic value of virtual monochromatic image (VMI) at low keV energy for early detection of small hepatocellular carcinoma (HCC) in hepatic arterial phase compared with low-tube voltage (80 kVp) CT generated from dual- ... ...

    Abstract This study aims to assess the diagnostic value of virtual monochromatic image (VMI) at low keV energy for early detection of small hepatocellular carcinoma (HCC) in hepatic arterial phase compared with low-tube voltage (80 kVp) CT generated from dual-energy CT (DE-CT). A total of 107 patients with 114 hypervascular HCCs (≤2 cm) underwent DE-CT, 140 kVp, blended 120 kVp, and 80 kVp images were generated, as well as 40 and 50 keV. CT numbers of HCCs and the standard deviation as image noise on psoas muscle were measured. The contrast-to-noise ratios (CNR) of HCC were compared among all techniques. Overall image quality and sensitivity for detecting HCC hypervascularity were qualitatively assessed by three readers. The mean CT numbers, CNR, and image noise were highest at 40 keV followed by 50 keV, 80 kVp, blended 120 kVp, and 140 kVp. Significant differences were found in all evaluating endpoints except for mean image noise of 50 keV and 80 kVp. Image quality of 40 keV was the lowest, but still it was considered acceptable for diagnostic purposes. The mean sensitivity for detecting lesion hypervascularity with 40 keV (92%) and 50 keV (84%) was higher than those with 80 kVp (56%). Low keV energy images were superior to 80 kVp in detecting hypervascularization of early HCC.
    MeSH term(s) Humans ; Carcinoma, Hepatocellular/diagnostic imaging ; Liver Neoplasms/diagnostic imaging ; Liver Neoplasms/blood supply ; Tomography, X-Ray Computed/methods ; Contrast Media ; Radiographic Image Interpretation, Computer-Assisted/methods ; Signal-To-Noise Ratio ; Retrospective Studies
    Chemical Substances Contrast Media
    Language English
    Publishing date 2023-09-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80184-7
    ISSN 1536-5964 ; 0025-7974
    ISSN (online) 1536-5964
    ISSN 0025-7974
    DOI 10.1097/MD.0000000000034774
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Endoscopic submucosal dissection of gastric neoplasms with severe fibrosis using a new thin-therapeutic endoscope and a dedicated conical cap.

    Miura, Yoshimasa / Fukuda, Hisashi / Ueno, Takashi / Hayashi, Yoshikazu / Osawa, Hiroyuki / Lefor, Alan Kawarai / Yamamoto, Hironori

    Endoscopy

    2023  Volume 55, Issue S 01, Page(s) E872–E873

    MeSH term(s) Humans ; Stomach Neoplasms/surgery ; Stomach Neoplasms/pathology ; Endoscopic Mucosal Resection ; Gastroscopy ; Endoscopes ; Fibrosis ; Gastric Mucosa/surgery ; Gastric Mucosa/pathology ; Treatment Outcome
    Language English
    Publishing date 2023-07-13
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 80120-3
    ISSN 1438-8812 ; 0013-726X
    ISSN (online) 1438-8812
    ISSN 0013-726X
    DOI 10.1055/a-2106-0688
    Database MEDical Literature Analysis and Retrieval System OnLINE

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