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Tamura M, Ohta H. Detecting antegrade urine flow using detective flow imaging in a cat with chronic kidney disease. J Small Anim Pract 2024; 65:219. [PMID: 37905749 DOI: 10.1111/jsap.13684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/14/2023] [Accepted: 10/01/2023] [Indexed: 11/02/2023]
Affiliation(s)
- M Tamura
- Department of Companion Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, 069-8501, Japan
| | - H Ohta
- Department of Companion Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, 069-8501, Japan
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Morozumi Y, Mahayot F, Nakase Y, Soong JX, Yamawaki S, Sofyantoro F, Imabata Y, Oda AH, Tamura M, Kofuji S, Akikusa Y, Shibatani A, Ohta K, Shiozaki K. Rapamycin-sensitive mechanisms confine the growth of fission yeast below the temperatures detrimental to cell physiology. iScience 2024; 27:108777. [PMID: 38269097 PMCID: PMC10805665 DOI: 10.1016/j.isci.2023.108777] [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: 05/25/2023] [Revised: 10/12/2023] [Accepted: 12/22/2023] [Indexed: 01/26/2024] Open
Abstract
Cells cease to proliferate above their growth-permissible temperatures, a ubiquitous phenomenon generally attributed to heat damage to cellular macromolecules. We here report that, in the presence of rapamycin, a potent inhibitor of Target of Rapamycin Complex 1 (TORC1), the fission yeast Schizosaccharomyces pombe can proliferate at high temperatures that usually arrest its growth. Consistently, mutations to the TORC1 subunit RAPTOR/Mip1 and the TORC1 substrate Sck1 significantly improve cellular heat resistance, suggesting that TORC1 restricts fission yeast growth at high temperatures. Aiming for a more comprehensive understanding of the negative regulation of high-temperature growth, we conducted genome-wide screens, which identified additional factors that suppress cell proliferation at high temperatures. Among them is Mks1, which is phosphorylated in a TORC1-dependent manner, forms a complex with the 14-3-3 protein Rad24, and suppresses the high-temperature growth independently of Sck1. Our study has uncovered unexpected mechanisms of growth restraint even below the temperatures deleterious to cell physiology.
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Affiliation(s)
- Yuichi Morozumi
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Fontip Mahayot
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Yukiko Nakase
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Jia Xin Soong
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Sayaka Yamawaki
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Fajar Sofyantoro
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
- Faculty of Biology, Universitas Gadjah Mada, Sleman, Yogyakarta 55281, Indonesia
| | - Yuki Imabata
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Arisa H. Oda
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
| | - Miki Tamura
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
| | - Shunsuke Kofuji
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Yutaka Akikusa
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Ayu Shibatani
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Kunihiro Ohta
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
| | - Kazuhiro Shiozaki
- Division of Biological Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
- Department of Microbiology and Molecular Genetics, University of California, Davis, Davis, CA 95616, USA
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Akasaka R, Furukawa A, Hayashi Y, Hitomi S, Koyama R, Oshima E, Tamura M, Yonemoto M, Hojo Y, Takahashi R, Shibuta I, Iwata K, Yonehara Y, Shinoda M. PAR2-dependent phosphorylation of TRPV4 at the trigeminal nerve terminals contributes to tongue cancer pain. J Oral Biosci 2023; 65:356-364. [PMID: 37838226 DOI: 10.1016/j.job.2023.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/10/2023] [Accepted: 10/10/2023] [Indexed: 10/16/2023]
Abstract
OBJECTIVE This study aimed to clarify the interactions between the tongue and primary afferent fibers in tongue cancer pain. METHODS A pharmacological analysis was conducted to evaluate mechanical hypersensitivity of the tongues of rats with squamous cell carcinoma (SCC). Changes in trigeminal ganglion (TG) neurons projecting to the tongue were analyzed using immunohistochemistry and western blotting. RESULTS SCC inoculation of the tongue caused persistent mechanical sensitization and tumor formation. Trypsin expression was significantly upregulated in cancer lesions. Continuous trypsin inhibition or protease-activated receptor 2 (PAR2) antagonism in the tongue significantly inhibited SCC-induced mechanical sensitization. No changes were observed in PAR2 and transient receptor potential vanilloid 4 (TRPV4) levels in the TG or the number of PAR2-and TRPV4-expressing TG neurons after SCC inoculation. In contrast, the relative amount of phosphorylated TRPV4 in the TG was significantly increased after SCC inoculation and abrogated by PAR2 antagonism in the tongue. TRPV4 antagonism in the tongue significantly ameliorated the mechanical sensitization caused by SCC inoculation. CONCLUSIONS Our findings indicate that tumor-derived trypsin sensitizes primary afferent fibers by PAR2 stimulation and subsequent TRPV4 phosphorylation, resulting in severe tongue pain.
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Affiliation(s)
- Ryuta Akasaka
- Department of Oral and Maxillofacial Surgery II, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Akihiko Furukawa
- Department of Oral and Maxillofacial Surgery II, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Yoshinori Hayashi
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan.
| | - Suzuro Hitomi
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Ryo Koyama
- Department of Oral and Maxillofacial Surgery II, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Eri Oshima
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Miki Tamura
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Mamiko Yonemoto
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Yasushi Hojo
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Ryosuke Takahashi
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Ikuko Shibuta
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Koichi Iwata
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Yoshiyuki Yonehara
- Department of Oral and Maxillofacial Surgery II, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
| | - Masamichi Shinoda
- Department of Physiology, Nihon University School of Dentistry, Tokyo, 101-8310, Japan
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Hirai H, Sen Y, Tamura M, Ohta K. TOR inactivation triggers heterochromatin formation in rDNA during glucose starvation. Cell Rep 2023; 42:113320. [PMID: 37913773 DOI: 10.1016/j.celrep.2023.113320] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/29/2023] [Accepted: 10/05/2023] [Indexed: 11/03/2023] Open
Abstract
In response to environmental cues, such as nutrient starvation, living organisms modulate gene expression through mechanisms involving histone modifications. Specifically, nutrient depletion inactivates the TOR (target of rapamycin) pathway, leading to reduced expression of ribosomal genes. While these regulatory mechanisms are well elucidated in budding yeast Saccharomyces cerevisiae, their conservation across diverse organisms remains unclear. In this study, we demonstrate that fission yeast Schizosaccharomyces pombe cells repress ribosomal gene transcription through a different mechanism. TORC1, which accumulates in the rDNA region, dissociates upon starvation, resulting in enhanced methylation of H3K9 and heterochromatin formation, facilitated by dissociation of the stress-responsive transcription factor Atf1 and accumulation of the histone chaperone FACT. We propose that this mechanism might be adapted in mammals that possess Suv39H1 and HP1, which are absent in budding yeast.
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Affiliation(s)
- Hayato Hirai
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan.
| | - Yuki Sen
- Department of Integrated Sciences, College of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan
| | - Miki Tamura
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan
| | - Kunihiro Ohta
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan; Universal Biology Institute, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan.
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Katoh N, Nakazato K, Uchinami Y, Kanehira T, Takahashi S, Koizumi F, Taguchi H, Nishioka K, Yasuda K, Tamura M, Takao S, Miyamoto N, Matsuura T, Kobashi K, Aoyama H. Evaluation of the Possibility of Dose Realignment Adaptation by Shifting the Isocenter in Proton Beam Therapy for Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e307. [PMID: 37785114 DOI: 10.1016/j.ijrobp.2023.06.2330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) In pancreatic cancer, a tumor is surrounded by the gastrointestinal (GI) tract, which is subject to changes in location, shape, and contents. Due to these inter-fractional changes, proton beam therapy (PBT) for pancreatic cancer may result in unintentionally high doses to the GI tract. Daily adaptive re-planning can solve this problem, but is not yet established with PBT due to its resource intensive characteristics. This study aims to evaluate the GI tract dose using weekly computed tomography (CTw) and the possibility of dose realignment adaptation by shifting the isocenter (IC) of the PBT plan, which does not require re-planning. MATERIALS/METHODS We retrospectively analyzed 6 consecutive patients with unresectable pancreatic cancer treated with real-time-image gated PBT using a fiducial marker. The planning CT was scanned at the natural expiration of respiration and a PBT plan of 60 GyE in 25 fractions (baseline plan, PLANbase) was created. The CTw images were acquired the day before start of PBT and once a week during the PBT course thereafter. The PLANbase was rigidly transferred to the CTw based on the relationship between the three-dimensional coordinates of the fiducial marker and those of the IC in the PLANbase. The PLANeval was created by recalculating the PLANbase on the CTw. We evaluated the doses to the stomach, duodenum, and intestines in the PLANeval according to the following criteria: Dmax of the stomach < 60 GyE, duodenum and intestines < 55 GyE, and D1cc of the stomach < 55 GyE, duodenum and intestines < 54 GyE. In addition, we investigated the GI tract dose realignment adaptation for the PLANeval with its IC shifted 2mm, 4mm, and 6mm in each of 6 directions (right, left, ventral, dorsal, cranial, and caudal), respectively. RESULTS A total of 35 PLANeval were created for the CTw. In the PLANbase of the 6 patients, the average of Dmax and D1cc of the stomach, duodenum and intestines were 50.7 GyE (range, 46.7-53.6) and 50.0 GyE (45.0-53.2), 49.2 GyE (44.3-51.7) and 48.8 GyE (43.7-51.5), and 49.2 GyE (44.8-52.0) and 48.9 GyE (44.6-51.8), respectively. In the PLANeval, the average of Dmax and D1cc of the stomach, duodenum, and intestines were 53.3GyE (43.8-61.4) and 52.8 GyE (43.2-61.1), 51.0 GyE (36.1-60.0) and 50.3 GyE (35.4-59.8), and 52.5 GyE (36.6-61.0) and 51.9 (34.4-60.9) GyE, respectively. Twenty-two of the 35 PLANeval (63 %) did not meet at least one of the GI tract dose criteria. In 11 of 22 PLANeval with higher doses to the GI tract, the IC shift resulted in GI dose reductions and all dose criteria were met. The minimum amount of the IC shift required to meet the criteria was 2 mm for 8 plans and 4 mm for 3 plans. The remaining 11 PLANeval did not meet the criteria using dose realignment adaptation by shifting the isocenter. CONCLUSION Adaptive replanning is necessary for PBT for pancreatic cancers due to excessive GI tract doses in more than 60% of the plans. Dose realignment adaptation by shifting the IC, which does not require re-planning, may be an option in adaptive treatment strategies.
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Affiliation(s)
- N Katoh
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Nakazato
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - Y Uchinami
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Kanehira
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - S Takahashi
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - F Koizumi
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Taguchi
- Department of Radiation Oncology, Hokkaido University Hospital, Sapporo, Japan
| | - K Nishioka
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - K Yasuda
- Department of Radiation Oncology, Hokkaido University Hospital, Sapporo, Japan
| | - M Tamura
- Department of Medical Physics, Hokkaido University Hospital, Sapporo, Japan
| | - S Takao
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - N Miyamoto
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - T Matsuura
- Faculty of Engineering, Hokkaido University, Sapporo, Japan
| | - K Kobashi
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - H Aoyama
- Department of Radiation Oncology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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Nishida K, Matsumura K, Tamura M, Nakamichi T, Shimamori K, Kuragano M, Kabir AMR, Kakugo A, Kotani S, Nishishita N, Tokuraku K. Effects of three microtubule-associated proteins (MAP2, MAP4, and Tau) on microtubules' physical properties and neurite morphology. Sci Rep 2023; 13:8870. [PMID: 37258650 DOI: 10.1038/s41598-023-36073-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 05/29/2023] [Indexed: 06/02/2023] Open
Abstract
The physical properties of cytoskeletal microtubules have a multifaceted effect on the expression of their cellular functions. A superfamily of microtubule-associated proteins, MAP2, MAP4, and tau, promote the polymerization of microtubules, stabilize the formed microtubules, and affect the physical properties of microtubules. Here, we show differences in the effects of these three MAPs on the physical properties of microtubules. When microtubule-binding domain fragments of MAP2, tau, and three MAP4 isoforms were added to microtubules in vitro and observed by fluorescence microscopy, tau-bound microtubules showed a straighter morphology than the microtubules bound by MAP2 and the three MAP4 isoforms. Flexural rigidity was evaluated by the shape of the teardrop pattern formed when microtubules were placed in a hydrodynamic flow, revealing that tau-bound microtubules were the least flexible. When full-length MAPs fused with EGFP were expressed in human neuroblastoma (SH-SY5Y) cells, the microtubules in apical regions of protrusions expressing tau were straighter than in cells expressing MAP2 and MAP4. On the other hand, the protrusions of tau-expressing cells had the fewest branches. These results suggest that the properties of microtubules, which are regulated by MAPs, contribute to the morphogenesis of neurites.
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Affiliation(s)
- Kohei Nishida
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, 050-8585, Japan
| | - Kosuke Matsumura
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, 050-8585, Japan
| | - Miki Tamura
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, 050-8585, Japan
| | - Takuto Nakamichi
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, 050-8585, Japan
| | - Keiya Shimamori
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, 050-8585, Japan
| | - Masahiro Kuragano
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, 050-8585, Japan
| | | | - Akira Kakugo
- Department of Physics, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Susumu Kotani
- Faculty of Science, Kanagawa University, Kanagawa, 221-8686, Japan
| | - Naoki Nishishita
- Regenerative Medicine and Cell Therapy Laboratories, Kaneka Corporation, Kobe, 650-0047, Japan
| | - Kiyotaka Tokuraku
- Graduate School of Engineering, Muroran Institute of Technology, Muroran, 050-8585, Japan.
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Abstract
Cellular adaptation to stressful environments such as starvation is essential to the survival of microbial communities, but the uniform response of the cell community may lead to entire cell death or severe damage to their fitness. Here, we demonstrate an elaborate response of the yeast community against glucose depletion, in which the first adapted cells kill the latecomer cells. During glucose depletion, yeast cells release autotoxins, such as leucic acid and L-2keto-3methylvalerate, which can even kill the clonal cells of the ones producing them. Although these autotoxins were likely to induce mass suicide, some cells differentiated to adapt to the autotoxins without genetic changes. If nondifferentiated latecomers tried to invade the habitat, autotoxins damaged or killed the latecomers, but the differentiated cells could selectively survive. Phylogenetically distant fission and budding yeast shared this behavior using the same autotoxins, suggesting that latecomer killing may be the universal system of intercellular communication, which may be relevant to the evolutional transition from unicellular to multicellular organisms.
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Affiliation(s)
- Arisa H. Oda
- Department of Basic Science, University of Tokyo, Tokyo, Japan
- * E-mail: (AHO); (TSH)
| | - Miki Tamura
- Department of Basic Science, University of Tokyo, Tokyo, Japan
| | - Kunihiko Kaneko
- Department of Basic Science, University of Tokyo, Tokyo, Japan
- Research Center for Complex Systems Biology, Universal Biology Institute, University of Tokyo, Tokyo, Japan
- The Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
| | - Kunihiro Ohta
- Department of Basic Science, University of Tokyo, Tokyo, Japan
- Research Center for Complex Systems Biology, Universal Biology Institute, University of Tokyo, Tokyo, Japan
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Tamura M, Suzuki S, Yamaguchi Y. Effects of tourism promotion on COVID-19 spread: The case of the "Go To Travel" campaign in Japan. J Transp Health 2022; 26:101407. [PMID: 35664887 PMCID: PMC9151657 DOI: 10.1016/j.jth.2022.101407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/19/2022] [Accepted: 05/29/2022] [Indexed: 05/11/2023]
Abstract
Introduction On July 22, 2020, the Japanese government launched the "Go to Travel" campaign that subsidizes 50% of personal travel expenditure to support the tourism industry under the COVID-19 pandemic. This policy was controversial from the viewpoint of infection spread and was temporarily cancelled in December 2020, though there was no statistical evidence. Methods This is the first study that measures the extent to which this campaign increased COVID-19 cases. This study regards the campaign as a natural experiment: although Tokyo and its commuting areas experienced the same time-series trends of COVID-19 cases before the "Go To Travel" campaign, this campaign was implemented in areas outside Tokyo, but not in Tokyo. Then, the comparison (difference-in-differences) yields the campaign's effect. Results The estimation shows that the "Go To Travel" campaign significantly raised the increment rate of cases by 23.7%-34.4% during July 30-August 4. There is no significant effect after August 5. In addition, our simulation identified the number of campaign-related cases in each city. Conclusions Although the campaign significantly spread COVID-19, the effect was not continuous to permanently change the time-series trend.
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Affiliation(s)
- M Tamura
- Wakayama University, Faculty of Economics, Sakaedani 930, Wakayama-city, Japan
- NUCB Business School, Graduate School of Management, 1-3-1 Nishiki Naka-ku, Nagoya, Japan
| | - S Suzuki
- Nagoya University of Commerce and Business, 4-4 Sagamine, Komenoki, Nisshin, Japan
| | - Y Yamaguchi
- Nagoya University of Commerce and Business, 4-4 Sagamine, Komenoki, Nisshin, Japan
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Perez E, Fernandez J, Fitzgerald C, Rouzard K, Tamura M, Savile C. 808 In vitro and Clinical Evaluation of Cannabigerol (CBG) Produced via Yeast Biosynthesis: A Cannabinoid with a Broad Range of Anti-inflammatory and Skin Health Boosting Properties. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.822] [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: 11/15/2022]
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Fernandez J, Fitzgerald C, Rouzard K, Tamura M, Healy J, Tao K, Guo L, Hu X, Stock M, Stock J, Perez E. 817 Encapsulated activated-grape seed extract (E-AGSE): A novel liposome-based formulation that promotes anti-aging, brightening and hydration in human skin. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Nakamura Y, Monzen H, Tamura M, Kosaka H, Kijima K, Nishimura Y. Development of a radiopaque tiltmeter to improve reproducibility for Fowler's position on chest radiography. Radiography (Lond) 2022; 28:912-918. [PMID: 35810623 DOI: 10.1016/j.radi.2022.06.008] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 06/15/2022] [Accepted: 06/17/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION We have developed a novel radiopaque tiltmeter (ROT) that can indicate patient tilt during a radiography examination and display it on X-ray images. This study evaluated the effect of variation of patient tilt on the reproducibility of Fowler's position for chest radiography and the accuracy of the ROT. METHODS We evaluated the reproducibility of Fowler's position based on changes from the first day in the central venous catheter (CVC) tip position and the cardiothoracic ratio (CTR) with and without a digital tiltmeter to verify its efficacy in patients who underwent mobile chest radiography. The ROT contains radiopaque liquid consisting of white barium sulfate solution and oil and has a scale bar of 15°-75° with increments of 15° to indicate ROT tilt. The ROT tilt was increased from 10° to 80° in increments of 10°. We then evaluated (1) the difference between the ROT tilt and the tilt measured with a digital tiltmeter, and (2) the ROT tilt displayed on the X-ray image. RESULTS With regard to reproducibility in Fowler's position, changes in the CVC tip position were 2.8 ± 3.9 mm and 10.7 ± 10.6 mm with and without the tiltmeter, respectively (p < 0.05) and the respective rates of change in the CTR were 0.7% ± 0.6% and 4.0% ± 2.1% (p < 0.05). Differences between the ROT tilt and the tilt measured by the digital tiltmeter were within ±2.5°. All ROT tilts displayed on the X-ray images were recognized exactly as each tilt. CONCLUSION Our novel ROT had the potential to accurately indicate patient tilt during chest radiography, which could be helpful in terms of reproducibility and precise follow-up. IMPLICATIONS FOR PRACTICE Use of the ROT for determination of patient tilt can improve reproducibility in Fowler's position, allowing more accurate serial X-ray imaging.
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Affiliation(s)
- Y Nakamura
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan; Department of Radiological Technology, University Hospital, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan.
| | - H Monzen
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
| | - M Tamura
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
| | - H Kosaka
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
| | - K Kijima
- Department of Radiological Technology, University Hospital, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan.
| | - Y Nishimura
- Department of Radiation Oncology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
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Tanaka R, Inoue D, Izumozaki A, Takata M, Yoshida S, Saito D, Tamura M, Matsumoto I. Preoperative evaluation of pleural adhesions with dynamic chest radiography: a retrospective study of 146 patients with lung cancer. Clin Radiol 2022; 77:e689-e696. [PMID: 35778295 DOI: 10.1016/j.crad.2022.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 05/11/2022] [Accepted: 05/16/2022] [Indexed: 11/30/2022]
Abstract
AIM To assess the utility of dynamic chest radiography (DCR) during the preoperative evaluation of pleural adhesions. MATERIALS AND METHODS Sequential chest radiographs of 146 patients with lung cancer were acquired during forced respiration using a DCR system. The presence of pleural adhesions and their grades were determined by retrospective surgery video assessment (absent: 121, present: 25). The maximum inspiration to expiration lung area ratio was used as an index for air intake volume. A ratio of ≥0.65 was regarded as insufficient respiration. Two radiologists assessed the images for pleural adhesions based on motion findings. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were compared for each adhesion grade and patient group (patients with sufficient/insufficient respiration). Pearson's chi-squared test compared the group. Statistical significance was set at p<0.05. RESULTS DCR correctly identified 22/25 patients with pleural adhesions, with 20 false-positive results (sensitivity, 88%; specificity, 83.5%; PPV, 52.4%; NPV, 97.12%). Although the diagnostic performances for the various adhesion grades were similar, specificity in patients with sufficient respiration increased to 93.9% (31/33), identifying all cases except for those with loose adhesions. CONCLUSIONS DCR images revealed restricted and/or distorted motions in lung structures and structural tension in patients with pleural adhesions. DCR could be a useful technique for routine preoperative evaluation of pleural adhesions. Further development of computerised methods can assist in the quantitative assessment of abnormal motion findings.
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Affiliation(s)
- R Tanaka
- College of Medical, Pharmaceutical & Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 920-0942 Japan.
| | - D Inoue
- Department of Radiology, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641 Japan
| | - A Izumozaki
- Department of Radiology, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641 Japan
| | - M Takata
- Department of Thoracic Surgery, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641 Japan
| | - S Yoshida
- Department of Thoracic Surgery, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641 Japan
| | - D Saito
- Department of Thoracic Surgery, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641 Japan
| | - M Tamura
- Department of Thoracic Surgery, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641 Japan
| | - I Matsumoto
- Department of Thoracic Surgery, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641 Japan
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Tamura M, Ohta H. Visualising the hepatic vascular architecture using superb microvascular imaging in a dog with severe hepatic fibrosis. J Small Anim Pract 2022; 63:717. [PMID: 35655289 DOI: 10.1111/jsap.13521] [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] [Received: 01/12/2022] [Revised: 03/15/2022] [Accepted: 05/09/2022] [Indexed: 11/29/2022]
Affiliation(s)
- M Tamura
- Laboratory of Companion Animal Internal Medicine, Department of Companion Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, Japan.,Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - H Ohta
- Laboratory of Companion Animal Internal Medicine, Department of Companion Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, Japan
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Yasukawa T, Oda AH, Nakamura T, Masuo N, Tamura M, Yamasaki Y, Imura M, Yamada T, Ohta K. TAQing2.0 for genome reorganization of asexual industrial yeasts by direct protein transfection. Commun Biol 2022; 5:144. [PMID: 35177796 PMCID: PMC8854394 DOI: 10.1038/s42003-022-03093-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 06/07/2021] [Accepted: 02/01/2022] [Indexed: 12/13/2022] Open
Abstract
Genomic rearrangements often generate phenotypic diversification. We previously reported the TAQing system where genomic rearrangements are induced via conditional activation of a restriction endonuclease in yeast and plant cells to produce mutants with marked phenotypic changes. Here we developed the TAQing2.0 system based on the direct delivery of endonucleases into the cell nucleus by cell-penetrating peptides. Using the optimized procedure, we introduce a heat-reactivatable endonuclease TaqI into an asexual industrial yeast (torula yeast), followed by a transient heat activation of TaqI. TAQing2.0 leads to generation of mutants with altered flocculation and morphological phenotypes, which exhibit changes in chromosomal size. Genome resequencing suggested that torula yeast is triploid with six chromosomes and the mutants have multiple rearrangements including translocations having the TaqI recognition sequence at the break points. Thus, TAQing2.0 is expected as a useful method to obtain various mutants with altered phenotypes without introducing foreign DNA into asexual industrial microorganisms. The TAQing system is upgraded and optimised as the foreign-DNA-free genome engineering technology, TAQing2.0. Genomic rearrangements are randomly induced by introducing the TaqI restriction endonuclease into non-sporulating industrial yeast with cell-penetrating peptides, leading to generation of mutants with altered phenotypes.
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Affiliation(s)
- Taishi Yasukawa
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Arisa H Oda
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Takahiro Nakamura
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Naohisa Masuo
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Miki Tamura
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Yuriko Yamasaki
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Makoto Imura
- Mitsubishi Corporation Life Sciences Limited, Tokyo Takarazuka Building 14F., 1-1-3 Yurakucho, Chiyoda-ku, Tokyo, 100-0006, Japan
| | - Takatomi Yamada
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Kunihiro Ohta
- Department of Life Sciences, Graduate School of Arts & Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan. .,The Universal Biology Institute of The University of Tokyo, Hongo 7-3-1, Tokyo, 113-0033, Japan.
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Abstract
During the cellular adaptation to nutrient starvation, cells temporarily decelerate translation processes including ribosomal biogenesis. However, the mechanisms repressing robust gene expression from the ribosomal gene cluster (rDNA) are unclear. Here, we demonstrate that fission yeast cells facing glucose starvation assemble facultative heterochromatin in rDNA leading to its transcriptional repression. Glucose starvation induces quick dissociation of the ATF/CREB-family protein Atf1 from rDNA, where in turn the histone chaperone FACT is recruited to promote H3K9 methylation and heterochromatinization. We also identify the histone acetyltransferase Gcn5 as a repressor of rDNA heterochromatinization in glucose-rich conditions, and this protein dissociates from rDNA upon glucose starvation. Facultative heterochromatin formation in rDNA requires histone deacetylases Clr3 and both the RNAi-dependent and -independent gene silencing pathways. This is essential in adaptation to starvation since mutants lacking heterochromatin formation in rDNA lead to untimely cell death during glucose starvation.
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Affiliation(s)
- Hayato Hirai
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Tokyo 153-8902, Japan
| | - Naomichi Takemata
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Tokyo 153-8902, Japan
| | - Miki Tamura
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Tokyo 153-8902, Japan
| | - Kunihiro Ohta
- To whom correspondence should be addressed. Tel: +81 3 5465 8834;
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Fujita Y, Katoh N, Uchinami Y, Taguchi H, Nishioka K, Mori T, Yasuda K, Minatogawa H, Koizumi F, Otsuka M, Takao S, Tamura M, Tanaka S, Sutherland K, Tha K, Ito Y, Shimizu S, Aoyama H. Pre-Treatment Apparent Diffusion Coefficient Histogram Metrics as a Predictor of Local Tumor Control After Proton Beam Therapy in Patients With Hepatocellular Carcinomas. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Tsuchimochi A, Endo C, Motoyoshi M, Tamura M, Hitomi S, Hayashi Y, Shinoda M. Effect of low-intensity pulsed ultrasound on orofacial sensory disturbance following inferior alveolar nerve injury: Role of neurotrophin-3 signaling. Eur J Oral Sci 2021; 129:e12810. [PMID: 34236109 DOI: 10.1111/eos.12810] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/10/2021] [Accepted: 05/11/2021] [Indexed: 11/27/2022]
Abstract
Percutaneous treatment of low-intensity pulsed ultrasound (LIPUS) to the site of inferior alveolar nerve (IAN) transection promotes functional regeneration, but the detailed mechanism is unknown. We examined the involvement of neurotrophin-3 (NT-3), which primarily binds with tropomyosin receptor kinase C (TrkC), in functional transected IAN regeneration following LIPUS treatment in rats. Daily LIPUS treatment to the transected IAN was performed, and the mechanical sensitivity of the facial skin was measured for 14 d. On day 5 after IAN transection, the expression of NT-3 in the transected IAN and TrkC-positive trigeminal ganglion neurons were immunohistochemically examined. Further, the effect of TrkC neutralization on the acceleration of facial mechanosensory disturbance restoration due to LIPUS treatment was analyzed. LIPUS treatment to the site of IAN transection significantly facilitated functional recovery from sensory disturbance on facial skin. Schwann cells in the transected IAN expressed NT-3, and LIPUS treatment increased the amount of NT-3. The facilitated recovery from the mechanosensory disturbance by continuous LIPUS treatment was inhibited by the ongoing TrkC neutralization at the IAN transection site. These results suggest that LIPUS treatment accelerates the recovery of orofacial mechanosensory function following IAN transection through the enhancement of NT-3 signaling in the transected IAN.
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Affiliation(s)
- Akane Tsuchimochi
- Department of Orthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - Chitose Endo
- Department of Orthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - Mitsuru Motoyoshi
- Department of Orthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - Miki Tamura
- Department of Physiology, Nihon University School of Dentistry, Tokyo, Japan
| | - Suzuro Hitomi
- Department of Physiology, Nihon University School of Dentistry, Tokyo, Japan
| | - Yoshinori Hayashi
- Department of Physiology, Nihon University School of Dentistry, Tokyo, Japan
| | - Masamichi Shinoda
- Department of Physiology, Nihon University School of Dentistry, Tokyo, Japan
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Yoshikawa T, Azuma K, Furukawa T, Tamura M, Hashimoto T, Morimoto M, Azuma N, Matsui K. AB0311 INCREASED LEVELS OF SERUM WISTERIA FLORIBUNDA AGGLUTININPOSITIVE MAC-2 BINDING PROTEIN IN RHEUMATIC DISEASES INCLUDING SLE. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Mac-2 binding protein is a cell-adhesive glycoprotein of the extracellular matrix secreted as a ligand of galectin-3 (Mac-2). Recently, a Wisteria floribunda agglutinin positive-M2BP (M2BP) assay developed using a lectin-antibody sandwich immunoassay has shown promise as a new fibrotic marker in liver fibrosis and interstitial lung disease (ILD) to detect unique fibrosis-related glycoalteration.Objectives:The aim of this study is to evaluate the utility of serum Mac-2 binding protein glycosylation isomer (M2BPGi) levels in patients with rheumatic diseases (RD).Methods:We retrospectively measured serum M2BPGi levels in 68 patients with RD and 16 healthy controls (HC). There were no patients of cirrhosis and active hepatitis. Serum levels of M2BPGi were measured using HISCL M2BP glycosylation isomer Assay Kit. We examined the relationship between serum M2BPGi levels and clinical parameters in patients with RD.Results:In patients with RD, the median age was 62.0 years and 79.4% of them were female.Serum M2BPGi levels were significantly higher in patients with RD than in HC (median 0.98 cutoff index [COI], 0.32 COI, respectively; P < 0.00001). Patients with SLE tended to have higher serum M2BPGi levels than other rheumatic diseases.In patients with RD, a significant correlation was not found between serum M2BP levels and inflammation markers such as CRP or ferritin. However, serum M2BPGi levels were significantly correlated with B cell activation markers such as immunoglobulin free light chain and IgG (r = 0.588, 0.504) and T cell activation marker such as sIL-2R (r = 0.408).Conclusion:Most of the rheumatic diseases in this study were considered to be type I interferonopathy diseases such as rheumatoid arthritis, Sjogren’s syndrome, inflammatory myositis, scleroderma and SLE.Serum M2BPGi was reported to have a significant correlation with SLE disease activity [SS Ahn et al. Lupus. 2018; 27: 771], and also to have a significant correlation with Gakectin-9, a novel biomarker for IFN signiture [Lucas L van den Hoogen et al. Ann Rheum Dis. 2018; 77: 1810].So, it was suggested that serum M2BPGi may be a novel biomarker that indirectly indicates how much IFN is activated in rheumatic diseases.Disclosure of Interests:None declared
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19
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Fernandez J, Webb C, Rouzard K, Healy J, Tamura M, Tao K, Guo L, Hu X, Stock M, Stock J, Perez E. 113 Encapsulated Activated-Grape Seed Extract (ACTIVITIS™) inhibits demethylation of PP2A promoting anti-aging benefits and barrier repair for human skin. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Laughlin T, Tan Y, Jarrold B, Chen J, Li L, Fang B, Zhao W, Tamura M, Matsubara A, Deng G, Wang X, Hakozaki T. Autophagy activators stimulate the removal of advanced glycation end products in human keratinocytes. J Eur Acad Dermatol Venereol 2021; 34 Suppl 3:12-18. [PMID: 32557807 DOI: 10.1111/jdv.16453] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/04/2020] [Accepted: 03/27/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND The accumulation of advanced glycation end products (AGEs) can impact cellular homoeostasis and protein structure, thus is implicated in numerous skin conditions including yellow, dull appearance. AGE formation is irreversible; thus, understanding of the recycling process of AGEs in the skin is critical for addressing skin appearance conditions. OBJECTIVE To determine whether (i) accumulation of AGEs occurs in dull appearance group among young population (age 20-29) (ii) in vitro autophagy stimulation results in reduction of AGEs in keratinocytes. METHODS Facial cheek biopsies were collected from Chinese women (age 20-50) exhibiting either dull or non-dull appearing skin. Histological assessment of glycation was performed for representative subjects among the 20-29 years sub-group by immunofluorescence staining of AGEs. LC-MS methods and keratinocyte cell culture were used to assess impact of autophagy modulators and skin care materials on carboxymethyl lysine (CML) amount, a representative AGE. RESULTS Notable amounts of AGEs were observed in the epidermal samples among young females. Interestingly, the amount of AGEs was significantly higher among the dull skin appearance group. Treatment of keratinocytes with glyceraldehyde (GLA) enhanced CML in the cells, and postglycation treatment with autophagy activators reduced CML. Two skin care materials, Nymphaea alba flower extract (a.k.a. white water lily extract) and sucrose dilaurate, were identified based from in vitro autophagy activation and found to reduce CML in keratinocytes. CONCLUSION We found AGEs accumulate in the facial epidermis even among young people, correlating to a yellow and dull appearance. We also demonstrated in vitro activation of autophagy can reduce AGEs in keratinocytes, and autophagy activating skin care materials, N. alba flower extract and sucrose dilaurate, also reduce AGEs in the keratinocyte in vitro model. These data suggest epidermal AGEs contribute to the dull skin appearance, and autophagy activators may provide an effective solution to improve dull appearance by removing and recycling the accumulated glycation in the skin.
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Affiliation(s)
- T Laughlin
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - Y Tan
- Shanghai Skin Disease Hospital, Shanghai, China.,Human Phenome Institute, Fudan University, Shanghai, China.,NMPA Key Laboratory for Monitoring and Evaluation of Cosmetics, Shanghai, China
| | - B Jarrold
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - J Chen
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - L Li
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - B Fang
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - W Zhao
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - M Tamura
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
| | - A Matsubara
- Procter & Gamble International Operations, Singapore Innovation Center, Singapore, Singapore
| | - G Deng
- Procter & Gamble International Operations, Singapore Innovation Center, Singapore, Singapore
| | - X Wang
- Shanghai Skin Disease Hospital, Shanghai, China
| | - T Hakozaki
- The Procter & Gamble Company, Mason Business Center, Mason, OH, USA
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21
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Kimura H, Hayashi R, Tsuchida Y, Hasegawa A, Kabata Y, Tamura M, Abe R. The role of IL-8 in skin lesions of a patient with erythema elevatum diutinum. J Eur Acad Dermatol Venereol 2021; 35:e396-e399. [PMID: 33604932 DOI: 10.1111/jdv.17179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- H Kimura
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Hayashi
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Y Tsuchida
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - A Hasegawa
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Y Kabata
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - M Tamura
- Tamura Derma Clinic, Sanjo, Japan
| | - R Abe
- Division of Dermatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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22
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Yoshimura T, Yamada R, Kinoshita R, Tamura H, Matsuura T, Takao S, Tamura M, Tanaka S, Nagae N, Kobashi K, Aoyama H, Shimizu S. Normal Tissue Complication Probability for Hematologic and Gastrointestinal Toxicity in Postoperative Whole Pelvic Radiotherapy for Gynecologic Malignancies using Intensity Modulated Proton Therapy with Robust Optimization. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Songthong A, Ito Y, Katoh N, Tamura M, Dekura Y, Toramatsu C, Srimaneekarn N, Haytor A, Khorprasert C, Amornwichet N, Alisanant P, Hirata Y, Shirato H, Shimizu S, Kobashi K. PD-0426: NTCP model for radiation-induced liver disease: Integration of clinical and dosimetric factors. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00448-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Fernandez J, Huber K, Webb C, Healy J, Tamura M, Stock M, Stock J, Perez E. 233 Novel chia seed extract (HyVia™) inhibits demethylation of PP2A and increases barrier repair markers, resulting in increased hydration of human skin. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.238] [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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Yoshikawa T, Furukawa T, Tamura M, Hashimoto T, Morimoto M, Azuma N, Matsui K. FRI0113 THE BASELINE SOLUBLE GP130 IS ASSOCIATED WITH THE RESPONSE OF RHEUMATOID ARTHRITIS PATIENTS TO SARILUMAB. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:IL-6 contributes significantly to the chronic inflammatory process of rheumatoid arthritis (RA). Sarilumab (SRL), a human anti-human IL-6 receptor alpha monoclonal antibody that blocks the signaling originated by the IL-6/IL-6R complex like tocilizumab,is an effective treatment. However, predictors of the response to sarilumab are still required.Objectives:We aimed to combine IL-6, soluble IL-6R (sIL-6R) and gp130 (sgp130) levels to identify groups of sarilumab responses.Methods:This research is a retrospective study. a total of 32 RA patients with SRL therapy in our department from February 1 in 2018 to December 31 in 2019 were included. Serum and clinical data from 32 RA patients were collected before treatment and until the last visit. Follow-up period was up to one year after starting SRL treatment. Serum were tested for IL-6 (Human IL-6 Quantikine ELISA Kit, R&D systems), sIL-6R (Human soluble IL-6R alpha Quantikine ELISA Kit, R&D systems) and sgp130 (Human soluble gp130 Quantikine ELISA Kit, R&D systems), using specific ELISAs according to the manufacturer’s instructions. Hierarchical cluster analysis (JMP14.3.0) was used to establish the relationship between IL-6, sIL-6R and sgp130. We evaluated the efficacy of SRL treatment on the last visit using European League Against Rheumatism (EULAR) response criteria in the groups of patients. The other statistical analyses were performed with EZR 1.41, and p Values less than 0.05 were considered significant.Results:The median age of patients was 70.5 (IQR: 66.5-74.3) years and the median of disease duration was 7.3 (1.7-15.3) years. Nine (28.1%) patients were biologics and Jakinibs naive. the median follow-up periods were 24 (12-26) weeks. The baseline DAS28 was median 4.39 (3.77 - 5.43), and CDAI was 21.1 (11.7-29.5). When comparing responders and non-responders, there were no significant differences in any of the baseline parameters and cytokines. Four statistical significant clusters of RA patients (i.e., Group1, Group2, Group3 and tocilizumab use group before SRL) were defined by serum concentrations of IL-6, sIL-6R and spg130 at baseline. The levels of IL-6 expressed as median in Group1 patients were 25.6 (14.4–72.2) pg/ml, in Group2 5.9 (3.3–11.3) pg/ml, and in Group3 70.2 (45.4–86.1) pg/ml (p < 0.002, significant difference only between Group2 and Group3). The levels of sIL-6R expressed as median in Group1 patients were 38.7 (34.7-45.1) ng/ml, in Group2 35.1 (24.8-41.9) ng/ml, and in Group3 35.7 (34.2-39.8) ng/ml (p = 0.5477). The levels of sgp130 expressed as median in Group1 patients were 272.6 (263.0-277.2) ng/ml, in Group2 223.1 (221.0-228.0) ng/ml, and in Group3 204.6 (192.0-207.6) ng/ml (p < 0.00003, significant difference between the three groups respectively). There were no significant differences in any of the baseline clinical features and laboratory findings between the three groups. Out of the 8 patients in Group1 had a good or moderate response to SRL. Conversely, the percentage of patients with no response to SRL was higher in Group3 than in Group1 and Group2.Conclusion:RA patients could be easily stratified prior to the rapeutic intervention with sgp130 related to the IL-6 signal reguration. Group1 patients, who had the best response to SRL, had the highest level of sgp130.Table 1.Comparison of baseline serum IL-6, sIL-6R and sgp130 of each groups of patientsTCZ use before SRLGroup 1Group 2Group 3P valuen=3N=9N=8N=9IL-6,pg/mL69.8,77.6,592.6Median[IQR]25.6[14.4-72.2]5.9[3.3-11.3]70.2[45.4-86.1]<0.002csIL-6R,ng/mL390.5,413.2,481.7Median[IQR]38.7[34.7-45.1]35.1[24.8-41.9]35.7[34.2-39.8]0.547sgp130,ng/mL205.6,219.2,239.8Median[IQR]273[263-277]223[221-228]205[192-208]<0.001abc*a, b and c mean that statically significant difference between subgroups as a: group1 vs. 2, b: group 1 vs. 3, c: group 2 vs. 3.Disclosure of Interests:Takahiro Yoshikawa: None declared, Tetsuya Furukawa: None declared, Masao Tamura: None declared, Teppei Hashimoto: None declared, Mai Morimoto: None declared, Naoto Azuma: None declared, Kiyoshi Matsui Grant/research support from: Asahi Kasei Pharma, Astellas Pharma (research grants), Speakers bureau: Bristol-Myers Squibb (lecture fees)
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Uchiyama A, Nagatomo T, Higurashi Y, Ohnishi J, Komiyama M, Kumagai K, Fujimaki M, Yamauchi H, Tamura M, Kaneko K, Fukunishi N, Nakagawa T. Control system for the new RIKEN 28-GHz superconducting electron cyclotron resonance ion source for SRILAC. Rev Sci Instrum 2020; 91:025101. [PMID: 32113460 DOI: 10.1063/1.5129632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/11/2020] [Indexed: 06/10/2023]
Abstract
A new RIKEN 28-GHz superconducting electron cyclotron resonance ion source (SC-ECRIS) has been installed for the superconducting RIKEN linear accelerator (SRILAC). The new SC-ECRIS control system mainly consists of programmable logic controllers (PLCs) embedded with the Experimental Physics and Industrial Control System. To improve the reliability as compared with previous control systems, two types of PLC central processing units, sequential and Linux, have been installed in the same unit. Past experience has shown that new types of designs that can rapidly respond to system scalability are key. By connecting PLC stations using star-topology field buses, their rapid and cost-effective response to system changes is realized for the new devices. Furthermore, a unique data acquisition system employing a 920-MHz-band radio was developed to measure analog data such as the temperature at the high-voltage stage.
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Affiliation(s)
- A Uchiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nagatomo
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Higurashi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Ohnishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Komiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Kumagai
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Fujimaki
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Yamauchi
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - M Tamura
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - K Kaneko
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - N Fukunishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nakagawa
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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Kijima K, Krisanachinda A, Tamura M, Nishimura Y, Monzen H. PV-056: Feasibility of a tungsten rubber grid collimator for electron grid therapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(20)30540-5] [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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Katoh N, Uchinami Y, Abo D, Takao S, Inoue T, Taguchi H, Morita R, Soyama T, Hashimoto T, Onimaru R, Prayongrat A, Tamura M, Matsuura T, Shimizu S, Shirato H. Initial Clinical Outcomes of Real-Time-Image Gated Spot-Scanning Proton Beam Therapy for Hepatocellular Carcinomas. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Fernandez J, Huber K, Webb C, Rouzard K, Tamura M, Wang Y, Liao Z, Sun P, Nie J, Zhang Z, Stock M, Stock J, Perez E. LB1113 TIRACLE™ and ACTIVITIS™: A novel anti-aging blend. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.06.079] [Citation(s) in RCA: 1] [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: 11/28/2022]
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30
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Doi H, Tamura M, Monzen H, Nishimura Y. An Experimental Animal Model of Re-Irradiation in Terms of Radiation-Induced Damages in Normal Intestine. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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Ishii T, Honma Y, Hayashi Y, Kubo O, Fernandez J, Rouzard K, Voronkov M, Tamura M, Healy J, Webb C, Stock M, Stock J, Perez E. 795 Acetyl-arctigenin (Ac-ATG), a novel and safe skin lightening molecule. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Leela-Arporn R, Ohta H, Nagata N, Sasaoka K, Tamura M, Dermlim A, Nisa K, Morishita K, Sasaki N, Nakamura K, Takagi S, Hosoya K, Takiguchi M. Epidemiology of massive hepatocellular carcinoma in dogs: A 4-year retrospective study. Vet J 2019; 248:74-78. [PMID: 31113567 DOI: 10.1016/j.tvjl.2019.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 04/22/2019] [Accepted: 04/22/2019] [Indexed: 12/20/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most common primary liver tumour in dogs. However, the clinical features and risk factors of HCC have not been confirmed. The objective of this study was to investigate the clinical features and risk factors for canine HCC. Medical records of 44 dogs diagnosed with HCC at Hokkaido University Veterinary Teaching Hospital between 2013 and 2017 were retrospectively reviewed. All dogs evaluated at the teaching hospital during the study period were used as the reference population for breed, age, sex predispositions or possible related factors for HCC, including concurrent disorders. Clinical characteristics of HCC were determined using propensity score matching analysis. The prevalence of HCC diagnosis was 0.96%. Multivariate analysis revealed that dogs diagnosed with HCC were significantly older (odds ratio [OR], 1.20; 95% confidence intervals [CI], 1.07-1.33) than the reference population. Welsh Corgis (OR, 3.68; 95% CI, 1.56-8.67) and Beagles (OR, 4.33; 95% CI, 1.58-11.90) were significantly predisposed to HCC. Twenty-seven of 44 dogs with HCC had at least one concurrent disorder. The most common concurrent disorder was hyperadrenocorticism (n = 10), and the adjusted odds of hyperadrenocorticism in dogs with HCC were 4.13 higher than those of the reference population (95% CI, 1.95-8.76). Propensity score matching analysis revealed that thrombocytosis (n = 30/43), increased alanine aminotransferase (n = 41/44), increased alkaline phosphatase (n = 42/44), and hypercalcemia (n = 13/32) were significantly associated with HCC diagnosis. The results of this study suggest that Welsh Corgis and Beagles are breeds with a predisposition for HCC and that hyperadrenocorticism might be a potential risk factor.
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Affiliation(s)
- R Leela-Arporn
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - H Ohta
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - N Nagata
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - K Sasaoka
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - M Tamura
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - A Dermlim
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - K Nisa
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - K Morishita
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - N Sasaki
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - K Nakamura
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - S Takagi
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - K Hosoya
- Veterinary Teaching Hospital, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - M Takiguchi
- Laboratory of Veterinary Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan.
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Sato T, Kitai K, Miyagawa K, Tamura M, Ueda A, Mori H, Kanoda K. Strange metal from a frustration-driven charge order instability. Nat Mater 2019; 18:229-233. [PMID: 30742081 DOI: 10.1038/s41563-019-0284-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 01/03/2019] [Indexed: 06/09/2023]
Abstract
Interparticle interactions are self-conflicting rather than cooperative on particular lattices. When such geometrical frustration occurs, charge ordering (CO) can be destabilized into non-trivial charge states such as the recently observed charge glass (CG). A more extreme case is the frustration-induced quantum melting of the CO that has been theoretically proposed. Here, we report d.c. charge transport and noise spectroscopy measurements for a triangular-lattice organic conductor situated close to the CO or CG. Our experiments demonstrate that these materials can host a strange metal with unusual charge dynamics, which we attribute to frustration-induced fluctuations of the CO or CG. Our results also show that the anomalous charge fluctuations can freeze into an insulating state when uniaxial stress is applied, which reduces the geometrical frustration. The present observations suggest the existence of the frustration-induced quantum melting of charges analogous to spin liquids.
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Affiliation(s)
- T Sato
- Department of Applied Physics, University of Tokyo, Tokyo, Japan.
- RIKEN Center for Emergent Matter Science, Wako, Japan.
| | - K Kitai
- Department of Applied Physics, University of Tokyo, Tokyo, Japan
| | - K Miyagawa
- Department of Applied Physics, University of Tokyo, Tokyo, Japan
| | - M Tamura
- Department of Physics, Faculty of Science and Technology, Tokyo University of Science, Noda, Japan
| | - A Ueda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Japan
| | - H Mori
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Japan
| | - K Kanoda
- Department of Applied Physics, University of Tokyo, Tokyo, Japan.
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Inui H, Mizuno J, Kikuchi E, Noguchi K, Tanji Y, Hamabata M, Kotsuzumi C, Komiyama M, Noguchi Y, Tamura M. Safer Vitrification of Mouse and Human Embryos Using the Novel Cryoroom Vitrification System for Assisted Reproductive Technology. Cryo Letters 2019; 40:1-10. [PMID: 30955025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Vitrification is widely used for assisted reproductive technology (ART). Most vitrification devices require the skillful placement of embryos into the carrier and aspiration of excessive vitrification solution. OBJECTIVE To evaluate the efficacy and safety of the Cryoroom as a vitrification device. MATERIALS AND METHODS Mouse and human embryos were vitrified with Cryoroom or Cryotop, and the developmental potency was assessed in vitro. Mouse monozygotic twin blastocysts were vitrified with Cryoroom or Cryotop for microarray analysis. RESULTS AND DISCUSSION In mouse and human embryos, there were no differences between the survival and developmental progress in each device. In silico, the Cryoroom device showed no changes, particularly in DNA methylation after vitrification compared with the Cryotop. These results showed that the form and function of the device may affect the gene expression levels in vitrified embryos. CONCLUSION The Cryoroom represents a safe and potentially revolutionary vitrification device for ART.
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Affiliation(s)
- H Inui
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan
| | - J Mizuno
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan.
| | - E Kikuchi
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan
| | - K Noguchi
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan
| | - Y Tanji
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan
| | - M Hamabata
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan
| | - C Kotsuzumi
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan
| | - M Komiyama
- Inui Institute for Frontier Reproductive Medicine and Infertility, Inui Maternity Clinic, Koriyama, Fukushima, Japan
| | - Y Noguchi
- Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - M Tamura
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Miyamae, Kawasaki, Japan
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Yasuda K, Takao S, Matsuo Y, Yoshimura T, Tamura M, Minatogawa H, Dekura Y, Matsuura T, Onimaru R, Shiga T, Shimizu S, Umegaki K, Shirato H. Intensity-Modulated Proton Therapy with Dose Painting based on Hypoxia Imaging for Nasopharyngeal Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1125] [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: 11/27/2022]
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36
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Tanaka Y, Kawazu M, Yasuda T, Tamura M, Hayakawa F, Kojima S, Ueno T, Kiyoi H, Naoe T, Mano H. Transcriptional activities of DUX4 fusions in B-cell acute lymphoblastic leukemia. Haematologica 2018; 103:e522-e526. [PMID: 29773604 DOI: 10.3324/haematol.2017.183152] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Yosuke Tanaka
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo
| | - Masahito Kawazu
- Department of Medical Genomics, Graduate School of Medicine, The University of Tokyo
| | - Takahiko Yasuda
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo.,Division of Biological Information Analysis, Department of Clinical Research Management, Clinical Research Center, National Hospital Organization Nagoya Medical Center, Aichi
| | - Miki Tamura
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo
| | - Fumihiko Hayakawa
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Aichi
| | - Shinya Kojima
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo
| | - Toshihide Ueno
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo
| | - Hitoshi Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Aichi
| | - Tomoki Naoe
- National Hospital Organization Nagoya Medical Center, Aichi
| | - Hiroyuki Mano
- Department of Cellular Signaling, Graduate School of Medicine, The University of Tokyo.,National Cancer Center Research Institute, Tokyo, Japan
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Negi H, Tamura M, Kawai T, Yoda I, Kawasaki T, Hirata T, Sugimura Y, Okada S, Yamamoto M. The Development and Practical Use of Information Systems in the Pharmaceutical Industry. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634955] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractTo provide information on the efficacy, safety, and quality of medicine promptly and accurately, we have developed two databases: a literature database with numerical data, and a Drug Information database. By an easy-to-use, company-wide information network system, over 1,000 medical representatives in more than 80 offices throughout Japan can retrieve information. Information derived from the system is displayed on the terminal and the original documents are automatically output through a facsimile.
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Ohno H, Tamura M, Kawakubo K, Gunji A, Kashihara H. Risk Factors for Ischemic Heart Disease in an Urban Area of Japan: A Case-Control Study in AMHTS. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634341] [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: 10/17/2022]
Abstract
AbstractObjectives: In Japan controversy exists as to whether or not the risk factors for ischemic heart disease (IHD) are the same as in western countries. We conducted a case-control study on IHD to clarify the risk factors in males in an urban area of Japan using our automated multiphasic health testing and services (AMHTS) system. Method: Cases were the clients who took the health check-up between January 1987 and July 1994 and had onset of IHD after the check-up. For each case five clients were selected as controls by conditional matching. The check-up data were compared between cases and controls 11 years, 6 years and just before the onset of the heart diseases. Results: The statistically significant items were as follows: (1) Eleven years before the onset: Total cholesterol (T-Chol) for myocardial infarction (MI), and fasting blood sugar (FBS) for angina pectoris (AP). (2) Six years before the onset: T-Chol, electrocardiographic (ECG) findings and the complaint of palpitation or breathlessness for MI, and FBS and palpitation or breathlessness for AP. (3) Just before the onset: T-Chol, the complaint of chest pain, FBS, smoking index and hypertensive status for MI and palpitation or breathlessness, ECG findings, chest pain, systolic blood pressure and erythrocyte sedimentation rate at 60 minutes for AP. In conclusion, the risk factors for MI in males in an urban area of Japan are the same as in western countries. The most significant risk factor for AP in males in an urban area of Japan is fasting blood sugar.
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Shibata S, Ohtuka Y, Hattori M, Aoshima T, Tohyama S, Uchiyama A, Kashihara H, Tamura M, Tsuchiya A, Yoshida K, Sasamori N, Tanaka Y. Subjective Symptoms Acquisition System in a Health Promotion System for the Elderly. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractA previous report was concerned with the evaluation of quality of life using a Health Promotion System for the Elderly. In the present report, we describe one part of that system: a subjective symptoms acquisition and reporting system.The main purpose of this system is to permit any physician or nurse to uniformly employ questionnaires to acquire accurate subjective symptoms. This system is applied in three steps. First, the subjective answers to 21 questions displayed on a personal computer are obtained. These answers correspond to the basic subjective symptoms. Second, if a basic subjective symptom is “positive”, more detailed questions are automatically generated. Finally, clear sentences regarding subjective symptoms are generated and output as a “finding report”.This information is helpful to physicians and nurses in their health-counseling work. An artificial intelligence (AI) program based on “XpertRule” produces detailed questions which are generated by an interactive questionnaire using branching logical rules.
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Tamura M, Ohta Y, Nakamura H, Oda M, Watanabe G. Diagnostic Value of Plasma Vascular Endothelial Growth Factor as a Tumor Marker in Patients with Non-Small Cell Lung Cancer. Int J Biol Markers 2018; 17:275-9. [PMID: 12521132 DOI: 10.1177/172460080201700408] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We assessed the diagnostic value of circulating VEGF as a tumor marker in patients with lung cancer and compared its clinical utility with that of other markers such as carcinoembryonic antigen (CEA) and cytokeratin 19 (CYFRA). One hundred and sixty non-small cell lung cancer patients and 70 healthy volunteers were included in the study. Circulating VEGF was assessed by enzyme-linked immunosorbent assay (ELISA). The serum concentrations of both CEA and CYFRA were measured by means of immunoradiometric assays. The diagnostic value of plasma VEGF (VEGFp) was better than that of CYFRA and similar to that of CEA. When the diagnostic value of VEGFp and CEA for the diagnosis of adenocarcinoma was compared, the two markers proved to have nearly equal discriminatory power. In diagnosing squamous cell carcinoma, VEGFp showed less discrimination than CYFRA. When the diagnostic value of VEGFp was analyzed for stage I adenocarcinoma patients, VEGFp was slightly more discriminatory than CEA. The combination assay of VEGFp and CEA had a sensitivity of 75% and a specificity of 60% at a cutoff of 104.4 pg/mL for VEGFp and 5.2 ng/mL for CEA. The combination of VEGF and CEA was superior to CEA alone in the early diagnosis of adenocarcinoma of the lung.
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Affiliation(s)
- M Tamura
- Department of Surgery, Kanazawa University School of Medicine, Japan.
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41
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Takahashi T, Tamura M, Takasu T, Kamei S. Clinical and quantitative analysis of patients with crowned dens syndrome. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.506] [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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42
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Shiratori Y, Obana R, Tamura M, Kubo E, Iino R, Miyazawa A, Yokoyama N, Maruyama Y. P5182Five-year clinical outcome after angioplasty for symptomatic lower-limb ischemia in hemodialysis patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sakasegawa H, Kohyama A, Katoh Y, Tamura M, Khono Y, Kimura A. Improvement of High Temperature Mechanical Property by Precipitation Hardening of Reduced Activation Ferritic/Martensitic Steels. Fusion Science and Technology 2017. [DOI: 10.13182/fst03-a333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Sakasegawa
- : Graduate school of Energy Science, Kyoto University, Gokasho, Uji, Kyoto 611-0011 Japan
| | - A. Kohyama
- : Institute of Advanced Energy, Kyoto University,, Gokasho, Uji, Kyoto 611-0011 Japan
| | - Y. Katoh
- : Institute of Advanced Energy, Kyoto University,, Gokasho, Uji, Kyoto 611-0011 Japan
| | - M. Tamura
- : National Defense Academy, Hashirimizu,, Yokosuka, Kanagawa 239-8686 Japan
| | - Y. Khono
- : Muroran Institute of Technology, Mizumoto, Muroran, Hokkaido 050-8585 Japan
| | - A. Kimura
- : Institute of Advanced Energy, Kyoto University,, Gokasho, Uji, Kyoto 611-0011 Japan
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Hirai Y, Tamura M, Otani J, Ishikawa F. NEK6-mediated phosphorylation of human TPP1 regulates telomere length through telomerase recruitment. Genes Cells 2016; 21:874-89. [DOI: 10.1111/gtc.12391] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 05/31/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Yugo Hirai
- Department of Gene Mechanisms; Graduate School of Biostudies; Kyoto University; Yoshida-Konoe-cho Sakyo-ku Kyoto 606-8501 Japan
| | - Miki Tamura
- Department of Gene Mechanisms; Graduate School of Biostudies; Kyoto University; Yoshida-Konoe-cho Sakyo-ku Kyoto 606-8501 Japan
| | - Junji Otani
- Department of Gene Mechanisms; Graduate School of Biostudies; Kyoto University; Yoshida-Konoe-cho Sakyo-ku Kyoto 606-8501 Japan
| | - Fuyuki Ishikawa
- Department of Gene Mechanisms; Graduate School of Biostudies; Kyoto University; Yoshida-Konoe-cho Sakyo-ku Kyoto 606-8501 Japan
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Yoshihara S, Fukuda H, Tamura M, Arisaka O, Ikeda M, Fukuda N, Tsuji T, Hasegawa S, Kanno N, Teraoka M, Wakiguchi H, Aoki Y, Igarashi H, Terada A, Hasegawa M, Manki A. Efficacy and Safety of Salmeterol/fluticasone Combination Therapy in Infants and Preschool Children with Asthma Insufficiently Controlled by Inhaled Corticosteroids. Drug Res (Stuttg) 2016; 66:371-6. [PMID: 27273710 DOI: 10.1055/s-0042-108852] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Clinical evidences of inhaled salmeterol/fluticasone propionate combination (SFC) therapy are insufficient in early childhood asthma. OBJECTIVES To examine the effects of SFC50, a combination product of salmeterol xinafoate (50 μg/day) and fluticasone propionate (100 μg/day), in infants and preschool children with asthma. METHODS The study was conducted at 31 sites in Japan. 35 patients (6 months to 5 years old) with asthma insufficiently controlled by inhaled corticosteroids (100 μg/day) were initiated to treat with SFC50 twice a day for 12 weeks with pressurized metered dose inhalers. The efficacy of SFC50 was assessed using nighttime sleep disorder score as the primary endpoint and the other efficacy measurements. The safety measurement included the incidences of adverse event (AE). RESULTS Mean patient age was 3.1 years, and 94.2% had mild-to-moderate persistent asthma (atopic type: 65.7%). Nighttime sleep disorder scores, assessed by a nighttime sleep diary, significantly decreased after treatment with SFC50 throughout the study period (p<0.01). SFC50 also significantly improved other efficacy outcomes including asthma symptom score, frequency of short-acting beta-agonist treatment, frequency of unscheduled visits to clinic, frequency of exacerbation due to virus infection, asthma control score and patient QOL score (p<0.01). AEs of cold, upper respiratory inflammation and asthmatic attack occurred in each of the 3 patients (8.6%); however, these were not regarded as treatment-related AEs. CONCLUSIONS SFC50 improved nighttime sleep disorder score and other efficacy outcome measures with no safety concerns. The results suggest that SFC50 treatment is useful to control the mild-to-moderate asthma in infant and preschool-aged children.
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Affiliation(s)
- S Yoshihara
- Department of Pediatrics, Dokkyo Medical University, Tochigi, Japan
| | - H Fukuda
- Department of Pediatrics, Dokkyo Medical University, Tochigi, Japan
| | - M Tamura
- Department of Pediatrics, Dokkyo Medical University, Tochigi, Japan
| | - O Arisaka
- Department of Pediatrics, Dokkyo Medical University, Tochigi, Japan
| | - M Ikeda
- Department of Pediatric Acute Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - N Fukuda
- Grimm Pediatrics and Allergy Clinic, Tochigi, Japan
| | - T Tsuji
- Department of Pediatrics, JA Hiroshima General Hospital, Hiroshima, Japan
| | - S Hasegawa
- Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - N Kanno
- Department of Pediatrics, Nishikata Hospital, Tochigi, Japan
| | - M Teraoka
- Department of Pediatrics, Kurashiki Municipal Hospital, Okayama, Japan
| | - H Wakiguchi
- Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Y Aoki
- Department of Pediatrics, Nagato General Hospital, Yamaguchi, Japan
| | - H Igarashi
- Department of Pediatrics, Nogi Hospital, Tochigi, Japan
| | - A Terada
- Terada Kid's Allergy & Asthma Clinic, Aichi, Japan
| | - M Hasegawa
- Department of Pediatrics, Yamaguchi Grand Medical Center, Yamaguchi, Japan
| | - A Manki
- Department of Pediatrics, Okayama City Hospital, Okayama, Japan
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Tamura M, Ito Y, Sakurai H, Mizumoto M, Kamizawa S, Murayama S, Yamashita H, Takao S, Suzuki R, Shirato H. SU-F-T-202: An Evaluation Method of Lifetime Attributable Risk for Comparing Between Proton Beam Therapy and Intensity Modulated X-Ray Therapy for Pediatric Cancer Patients by Averaging Four Dose-Response Models for Carcinoma Induction. Med Phys 2016. [DOI: 10.1118/1.4956339] [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: 11/07/2022] Open
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47
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Kubo K, Monzen H, Tamura M, Hirata M, Nishimura Y. EP-1752: A study of suitable conditions for stereotactic radiation therapy using VMAT for lung cancer. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)33003-1] [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: 11/15/2022]
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48
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Tamura M, Hinderaker SG, Manzi M, Van Den Bergh R, Zachariah R. Severe acute maternal morbidity and associated deaths in conflict and post-conflict settings in Africa. Public Health Action 2015; 2:122-5. [PMID: 26392969 DOI: 10.5588/pha.12.0036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 09/04/2012] [Indexed: 11/10/2022] Open
Abstract
SETTING Five hospitals in four conflict and post-conflict countries (Democratic Republic of Congo, Somaliland, Sierra Leone and Burundi). OBJECTIVES To report among hospital deliveries: 1) the proportion of severe acute maternal morbidity (SAMM), 2) the pattern of SAMM, and 3) maternal deaths according to type of SAMM. METHODS An audit of data from a standardised database implemented in all the sites in the study. RESULTS Of the 18 675 deliveries, there were 6314 (34%) known SAMM cases with 63 associated deaths, implying that for every 100 SAMM cases there was one maternal death. In descending order, the death-to-SAMM ratios per 1000 deliveries were: 1:7 for sepsis, 6 for haemorrhage 1:70 for hypertensive disorder and 1:398 for obstructed labour. A substantial proportion of deaths (38%) that occurred in hospitals could not be categorised into the standardised SAMM conditions available in the database. CONCLUSION As this is the first study using multi-centre data from conflict and post-conflict countries, these findings are relevant to improving maternal health in such settings. Findings, implications and possible ways forward in addressing various challenges are discussed.
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Affiliation(s)
- M Tamura
- Médecins Sans Frontières (MSF), Operational Centre Brussels, Brussels, Belgium
| | - S G Hinderaker
- International Union Against Tuberculosis and Lung Disease, Paris, France ; The Centre for International Health, University of Bergen, Norway
| | - M Manzi
- Medical Department (Operational Research), Operational Centre Brussels, MSF-Luxembourg, Luxembourg
| | - R Van Den Bergh
- Medical Department (Operational Research), Operational Centre Brussels, MSF-Luxembourg, Luxembourg
| | - R Zachariah
- Medical Department (Operational Research), Operational Centre Brussels, MSF-Luxembourg, Luxembourg
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49
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Hosono S, Mugishima H, Takahashi S, Takahashi S, Masaoka N, Yamamoto T, Tamura M. One-time umbilical cord milking after cord cutting has same effectiveness as multiple-time umbilical cord milking in infants born at <29 weeks of gestation: a retrospective study. J Perinatol 2015; 35:590-4. [PMID: 25764329 DOI: 10.1038/jp.2015.15] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 02/03/2015] [Accepted: 02/04/2015] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To compare two strategies to potentiate the effects of placental transfusion in infants born at <29 weeks of gestation. STUDY DESIGN Twenty infants who received one-time umbilical cord milking after umbilical cord cutting were compared with 20 infants from a previous study group who received multiple-time umbilical cord milking. The primary outcome measurements were the probability of not needing a red blood cell (RBC) transfusion during the hospital stay and the total number of RBC transfusions within 21 days after birth. RESULT There was no significant difference in the probability of not needing a transfusion during the hospital stay (P=0.75) and the mean number of RBC transfusions given within the first 21 days of life (1.1±1.8 for the one-time umbilical cord-milking group vs 0.7±1.2 for the multiple-time umbilical cord-milking group, P=0.48). CONCLUSION One-time umbilical cord milking after umbilical cord cutting had similar beneficial effects to multiple-time umbilical cord milking before umbilical cord cutting in very premature infants.
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Affiliation(s)
- S Hosono
- Division of Neonatology, Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - H Mugishima
- Division of Neonatology, Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - S Takahashi
- Division of Neonatology, Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - S Takahashi
- Division of Neonatology, Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - N Masaoka
- 1] Department of Obstetrics and Gynecology, Tokyo Women's Medical University Yachiyo Medical Center, Chiba, Japan [2] Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan
| | - T Yamamoto
- Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan
| | - M Tamura
- Division of Neonatal Medicine, Center for Maternal, Fetal and Neonatal Medicine, Saitama Medical University Kawagoe Medical Center, Saitama, Japan
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50
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Nemoto E, Sakisaka Y, Tsuchiya M, Tamura M, Nakamura T, Kanaya S, Shimonishi M, Shimauchi H. Wnt3a signaling induces murine dental follicle cells to differentiate into cementoblastic/osteoblastic cells via an osterix-dependent pathway. J Periodontal Res 2015; 51:164-74. [PMID: 26095156 DOI: 10.1111/jre.12294] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Dental follicle cells, putative progenitor cells for cementoblasts, osteoblasts and periodontal ligament cells, interplay with Hertwig's epithelial root sheath (HERS) cells during tooth root formation, in which HERS is considered to have an inductive role in initiating cementogenesis by epithelial-mesenchymal interaction. However, the specific mechanisms controlling the cementoblast/osteoblast differentiation of dental follicle cells are not fully understood. Canonical Wnt signaling has been implicated in increased bone formation by controlling mesenchymal stem cell or osteoblastic cell functions. This study examined the possible expression of canonical Wnt ligand in HERS and the role of Wnt signaling during the cementoblast/osteoblast differentiation of dental follicle cells. MATERIAL AND METHODS The expression of Wnt3a, a representative canonical Wnt ligand, in HERS was assessed by immunohistochemistry. The differentiation and function of immortalized murine dental follicle cells were evaluated by measuring alkaline phosphatase (ALP, Alpl) activity and osteogenic gene expression. RESULTS We identified the expression of Wnt3a in HERS during mouse tooth root development by immunohistochemistry as well as in cultured human epithelial rest cells of Malassez by real-time polymerase chain reaction, while no expression of Wnt3a was detected in cultured dental mesenchymal cells. Exposure of immortalized murine dental follicle cells to Wnt3a-induced ALP activity as well as expression of the Alpl gene. Pretreatment of cells with Dickkopf-1, a potent canonical Wnt antagonist, markedly attenuated the effect of Wnt3a on ALP expression. Furthermore, Wnt3a induced transcriptional activity of runt-related transcription factor 2 (Runx2) and expression of osterix at gene and/or protein levels. Treatment with osterix-small interfering RNA significantly inhibited Wnt3a-induced ALP expression at gene and protein levels. CONCLUSION These findings suggest that HERS has a potential role in stimulating cementoblast/osteoblast differentiation of dental follicle cells via the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- E Nemoto
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Y Sakisaka
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - M Tsuchiya
- Department of Oral Diagnosis, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Tohoku Fukushi University, Sendai, Japan
| | - M Tamura
- Department of Biochemistry and Molecular Biology, Hokkaido University Graduate School of Dentistry, Sapporo, Japan
| | - T Nakamura
- Department of Pediatric Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - S Kanaya
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Liaison Center for Innovative Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - M Shimonishi
- Department of Comprehensive Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - H Shimauchi
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan
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