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Andrade CLB, Ferreira MV, Alencar BM, Junior AMA, Lopes TJS, Dos Santos AS, Dos Santos MM, Silva MICS, Rosa IMDRP, Filho JLSB, Guimaraes MA, de Carvalho GC, Santos HHM, Santos MML, Meyer R, Rios TN, Rios RA, Freire SM. Enhancing diagnostic accuracy of multiple myeloma through ML-driven analysis of hematological slides: new dataset and identification model to support hematologists. Sci Rep 2024; 14:11176. [PMID: 38750071 PMCID: PMC11096332 DOI: 10.1038/s41598-024-61420-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 05/03/2024] [Indexed: 05/18/2024] Open
Abstract
Multiple Myeloma (MM) is a hematological malignancy characterized by the clonal proliferation of plasma cells within the bone marrow. Diagnosing MM presents considerable challenges, involving the identification of plasma cells in cytology examinations on hematological slides. At present, this is still a time-consuming manual task and has high labor costs. These challenges have adverse implications, which rely heavily on medical professionals' expertise and experience. To tackle these challenges, we present an investigation using Artificial Intelligence, specifically a Machine Learning analysis of hematological slides with a Deep Neural Network (DNN), to support specialists during the process of diagnosing MM. In this sense, the contribution of this study is twofold: in addition to the trained model to diagnose MM, we also make available to the community a fully-curated hematological slide dataset with thousands of images of plasma cells. Taken together, the setup we established here is a framework that researchers and hospitals with limited resources can promptly use. Our contributions provide practical results that have been directly applied in the public health system in Brazil. Given the open-source nature of the project, we anticipate it will be used and extended to diagnose other malignancies.
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Affiliation(s)
- Caio L B Andrade
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Marcos V Ferreira
- Institute of Computing, Federal University of Bahia, Salvador, 40170-110, Brazil
| | - Brenno M Alencar
- Institute of Computing, Federal University of Bahia, Salvador, 40170-110, Brazil
| | - Ariel M A Junior
- Institute of Computing, Federal University of Bahia, Salvador, 40170-110, Brazil
| | | | - Allan S Dos Santos
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Mariane M Dos Santos
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Maria I C S Silva
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Izabela M D R P Rosa
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Jorge L S B Filho
- Institute of Computing, Federal University of Bahia, Salvador, 40170-110, Brazil
| | - Matheus A Guimaraes
- Institute of Computing, Federal University of Bahia, Salvador, 40170-110, Brazil
| | - Gilson C de Carvalho
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Herbert H M Santos
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Márcia M L Santos
- Hospital Universitario Professor Edgard Santos - HUPES, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Roberto Meyer
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
| | - Tatiane N Rios
- Institute of Computing, Federal University of Bahia, Salvador, 40170-110, Brazil
| | - Ricardo A Rios
- Institute of Computing, Federal University of Bahia, Salvador, 40170-110, Brazil.
| | - Songeli M Freire
- Institute of Health Sciences, Federal University of Bahia, Salvador, 40110-902, Brazil
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Fukushima M, Hirota M, Yukimori T, Hayashi A, Hirohara Y, Saika M, Matsuoka K. Evaluation of objective and subjective binocular ocular refraction with looking in type. BMC Ophthalmol 2024; 24:170. [PMID: 38627750 PMCID: PMC11020990 DOI: 10.1186/s12886-024-03449-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 04/10/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND This study aimed to compare the results of the Chronos binocular/monocular refraction system, that measures objective and subjective ocular refraction in one unit, to objective findings obtained from a conventional autorefractometer and a conventional subjective ocular refraction using a trial-frame in real space. METHODS Twenty-eight healthy volunteers (21.2 ± 1.5 years old) were included in this study. Objective ocular refraction was measured using two tests: the Chronos binocular/monocular refraction system under binocular conditions and a conventional autorefractometer under monocular conditions. Subjective ocular refraction was measured using three tests: Chronos binocular/monocular refraction system under binocular, monocular conditions, and trial-frame in the real space under monocular conditions. The measurement distance was set to 5.0 m for each test. All ocular refractions were converted into spherical equivalents (SEs). RESULTS The objective SE was significantly more negative with Chronos binocular/monocular refraction system under binocular condition (- 4.08 ± 2.76 D) than with the conventional autorefractometer under monocular condition (- 3.85 ± 2.66 D) (P = 0.002). Although, the subjective SE was significantly more negative with Chronos binocular/monocular refraction system under binocular condition (- 3.55 ± 2.67 D) than with the trial-frame in the real space under monocular condition (- 3.33 ± 2.75 D) (P = 0.002), Chronos binocular/monocular refraction system under monocular condition (- 3.17 ± 2.57 D) was not significantly different from that in trial-frame in real space under monocular condition (P = 0.33). CONCLUSION These findings suggest that the Chronos binocular/monocular refraction system, which can complete both objective and subjective ocular refraction tests in a single unit, is suitable for screening ocular refraction, although it produces slightly more myopic results. Furthermore, subjective ocular refraction testing accuracy in Chronos binocular/monocular refraction system can be equivalent to trial-frame in real-space testing by switching from binocular to monocular condition.
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Affiliation(s)
- Megumi Fukushima
- Division of Orthoptics, Graduate School of Medical Care and Technology, Teikyo University, Itabashi, Tokyo, Japan
| | - Masakazu Hirota
- Department of Orthoptics, Faculty of Medical Technology, Teikyo University, 2-11-1 Kaga, Itabashi, 173-8605, Itabashi, Tokyo, Japan.
- Department of Ophthalmology, School of Medicine, Teikyo University, Itabashi, Tokyo, Japan.
| | | | | | | | | | - Kumiko Matsuoka
- Department of Orthoptics, Faculty of Medical Technology, Teikyo University, 2-11-1 Kaga, Itabashi, 173-8605, Itabashi, Tokyo, Japan
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Kobayashi M, Onozawa N, Matsuda K, Wakimoto T. Chemoenzymatic tandem cyclization for the facile synthesis of bicyclic peptides. Commun Chem 2024; 7:67. [PMID: 38548970 PMCID: PMC10978974 DOI: 10.1038/s42004-024-01147-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/13/2024] [Indexed: 04/01/2024] Open
Abstract
Bicyclic peptides exhibit improved metabolic stabilities and target specificities when compared to their linear or mono-cyclic counterparts; however, efficient and straightforward synthesis remains challenging due to their intricate architectures. Here, we present a highly selective and operationally simple one-pot chemoenzymatic tandem cyclization approach to synthesize bicyclic peptides with small to medium ring sizes. Penicillin-binding protein-type thioesterases (PBP-type TEs) efficiently cyclized azide/alkyne-containing peptides in a head-to-tail manner. Successive copper (I)-catalyzed azide-alkyne cycloaddition generated bicyclic peptides in one-pot, thus omitting the purification of monocyclic intermediates. This chemoenzymatic strategy enabled the facile synthesis of bicyclic peptides bearing hexa-, octa-, and undecapeptidyl head-to-tail cyclic scaffolds.
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Affiliation(s)
- Masakazu Kobayashi
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo, 060-0812, Japan
| | - Naho Onozawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo, 060-0812, Japan
| | - Kenichi Matsuda
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo, 060-0812, Japan.
| | - Toshiyuki Wakimoto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo, 060-0812, Japan.
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Barabona G, Ngare I, Kamori D, Nkinda L, Kosugi Y, Mawazo A, Ekwabi R, Kinasa G, Chuwa H, Sato K, Sunguya B, Ueno T. Neutralizing immunity against coronaviruses in Tanzanian health care workers. Sci Rep 2024; 14:5508. [PMID: 38448564 PMCID: PMC10917759 DOI: 10.1038/s41598-024-55989-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/29/2024] [Indexed: 03/08/2024] Open
Abstract
The ongoing vaccination efforts and exposure to endemic and emerging coronaviruses can shape the population's immunity against this group of viruses. In this study, we investigated neutralizing immunity against endemic and emerging coronaviruses in 200 Tanzanian frontline healthcare workers (HCWs). Despite low vaccination rates (19.5%), we found a high SARS-CoV-2 seroprevalence (94.0%), indicating high exposure in these HCWs. Next, we determined the neutralization capacity of antisera against human coronavirus NL63, and 229E, SARS-CoV-1, MERS-CoV and SARS-CoV-2 (including Omicron subvariants: BA.1, BQ.1.1 and XBB.1.5) using pseudovirus neutralization assay. We observed a broad range of neutralizing activity in HCWs, but no neutralization activity detected against MERS-CoV. We also observed a strong correlation between neutralizing antibody titers for SARS-CoV-2 and SARS-CoV-1, but not between other coronaviruses. Cross-neutralization titers against the newer Omicron subvariants, BQ.1.1 and XBB.1.5, was significantly reduced compared to BA.1 and BA.2 subvariants. On the other hand, the exposed vaccinated HCWs showed relatively higher median cross-neutralization titers against both the newer Omicron subvariants and SARS-CoV-1, but did not reach statistical significance. In summary, our findings suggest a broad range of neutralizing potency against coronaviruses in Tanzanian HCWs with detectable neutralizing immunity against SARS-CoV-1 resulting from SARS-CoV-2 exposure.
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Affiliation(s)
- Godfrey Barabona
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Isaac Ngare
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Doreen Kamori
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
- Collaboration Unit for Infection, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Lilian Nkinda
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Yusuke Kosugi
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ambele Mawazo
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Rayi Ekwabi
- Amana Regional Referral Hospital, Dar es Salaam, Tanzania
| | | | | | - Kei Sato
- Collaboration Unit for Infection, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
- Division of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
- International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Japan
| | - Bruno Sunguya
- Collaboration Unit for Infection, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
- Department of Community Health, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Takamasa Ueno
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan.
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.
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Ikegami K. Circadian rhythm of intraocular pressure. J Physiol Sci 2024; 74:14. [PMID: 38431563 PMCID: PMC10908160 DOI: 10.1186/s12576-024-00905-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/04/2024] [Indexed: 03/05/2024]
Abstract
Intraocular pressure (IOP) plays a crucial role in glaucoma development, involving the dynamics of aqueous humor (AH). AH flows in from the ciliary body and exits through the trabecular meshwork (TM). IOP follows a circadian rhythm synchronized with the suprachiasmatic nucleus (SCN), the circadian pacemaker. The SCN resets peripheral clocks through sympathetic nerves or adrenal glucocorticoids (GCs). IOP's circadian rhythm is governed by circadian time signals, sympathetic noradrenaline (NE), and GCs, rather than the local clock. The activity of Na+/K+-ATPase in non-pigmented epithelial cells in the ciliary body can influence the nocturnal increase in IOP by enhancing AH inflow. Conversely, NE, not GCs, can regulate the IOP rhythm by suppressing TM macrophage phagocytosis and AH outflow. The activation of the β1-adrenergic receptor (AR)-mediated EPAC-SHIP1 signal through the ablation of phosphatidylinositol triphosphate may govern phagocytic cup formation. These findings could offer insights for better glaucoma management, such as chronotherapy.
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Affiliation(s)
- Keisuke Ikegami
- Laboratory of Regulation in Metabolism and Behavior, Faculty of Agriculture, Kyushu University, 744 Motooka, Nishi-Ku, Fukuoka, 819-0395, Japan.
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Yamaguchi S, Minamide N, Imai H, Ikeda T, Watanabe M, Imanaka-Yoshida K, Maruyama K. The development of early human lymphatic vessels as characterized by lymphatic endothelial markers. EMBO J 2024; 43:868-885. [PMID: 38351385 PMCID: PMC10907744 DOI: 10.1038/s44318-024-00045-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/02/2024] [Accepted: 01/08/2024] [Indexed: 03/03/2024] Open
Abstract
Lymphatic vessel development studies in mice and zebrafish models have demonstrated that lymphatic endothelial cells (LECs) predominantly differentiate from venous endothelial cells via the expression of the transcription factor Prox1. However, LECs can also be generated from undifferentiated mesoderm, suggesting potential diversity in their precursor cell origins depending on the organ or anatomical location. Despite these advances, recapitulating human lymphatic malformations in animal models has been difficult, and considering lymphatic vasculature function varies widely between species, analysis of development directly in humans is needed. Here, we examined early lymphatic development in humans by analyzing the histology of 31 embryos and three 9-week-old fetuses. We found that human embryonic cardinal veins, which converged to form initial lymph sacs, produce Prox1-expressing LECs. Furthermore, we describe the lymphatic vessel development in various organs and observe organ-specific differences. These characterizations of the early development of human lymphatic vessels should help to better understand the evolution and phylogenetic relationships of lymphatic systems, and their roles in human disease.
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Affiliation(s)
- Shoichiro Yamaguchi
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Natsuki Minamide
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Hiroshi Imai
- Pathology Division, Mie University School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Tomoaki Ikeda
- Department of Obstetrics and Gynecology, Mie University School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Masatoshi Watanabe
- Department of Oncologic Pathology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Kyoko Imanaka-Yoshida
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan
| | - Kazuaki Maruyama
- Department of Pathology and Matrix Biology, Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu, Mie, 514-0001, Japan.
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Nakao M, Matsui M, Kim K, Nishiyama N, Grainger DW, Okano T, Kanazawa H, Nagase K. Umbilical cord-derived mesenchymal stem cell sheets transplanted subcutaneously enhance cell retention and survival more than dissociated stem cell injections. Stem Cell Res Ther 2023; 14:352. [PMID: 38072920 PMCID: PMC10712142 DOI: 10.1186/s13287-023-03593-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Human umbilical cord-derived mesenchymal stem cell (hUC-MSC) sheets have recently attracted attention as an alternative approach to injected cell suspensions for stem cell therapy. However, cell engraftment and cytokine expression levels between hUC-MSC sheets and their cell suspensions in vivo have not yet been compared. This study compares hUC-MSC in vivo engraftment efficacy and cytokine expression for both hUC-MSC sheets and cell suspensions. METHODS hUC-MSC sheets were prepared using temperature-responsive cell culture; two types of hUC-MSC suspensions were prepared, either by enzymatic treatment (trypsin) or by enzyme-free temperature reduction using temperature-responsive cell cultureware. hUC-MSC sheets and suspensions were transplanted subcutaneously into ICR mice through subcutaneous surgical placement and intravenous injection, respectively. hUC-MSC sheet engraftment after subcutaneous surgical transplantation was investigated by in vivo imaging while intravenously injected cell suspensions were analyzing using in vitro organ imaging. Cytokine levels in both transplant site tissues and blood were quantified by enzyme-linked immunosorbent assay. RESULTS After subcutaneous transplant, hUC-MSC sheets exhibited longer engraftment duration than hUC-MSC suspensions. This was attributed to extracellular matrix (ECM) and cell-cell junctions retained in sheets but enzymatically altered in suspensions. hUC-MSC suspensions harvested using enzyme-free temperature reduction exhibited relatively long engraftment duration after intravenous injection compared to suspensions prepared using trypsin, as enzyme-free harvest preserved cellular ECM. High HGF and TGF-β1 levels were observed in sheet-transplanted sites compared to hUC-MSC suspension sites. However, no differences in human cytokine levels in murine blood were detected, indicating that hUC-MSC sheets might exert local paracrine rather than endocrine effects. CONCLUSIONS hUC-MSC sheet transplantation could be a more effective cell therapeutic approach due to enhanced engraftment and secretion of therapeutic cytokines over injected hUC-MSC suspensions.
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Affiliation(s)
- Mitsuyoshi Nakao
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Makoto Matsui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Kyungsook Kim
- Cell Sheet Tissue Engineering Center (CSTEC), Department of Molecular Pharmaceutics, University of Utah, Health Sciences, Salt Lake City, UT, 84112, USA
| | - Nobuhiro Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - David W Grainger
- Cell Sheet Tissue Engineering Center (CSTEC), Department of Molecular Pharmaceutics, University of Utah, Health Sciences, Salt Lake City, UT, 84112, USA
- Department of Biomedical Engineering, University of Utah, Salt Lake City, UT, 84112, USA
| | - Teruo Okano
- Cell Sheet Tissue Engineering Center (CSTEC), Department of Molecular Pharmaceutics, University of Utah, Health Sciences, Salt Lake City, UT, 84112, USA
| | - Hideko Kanazawa
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Kenichi Nagase
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
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Tsuno H, Tanaka N, Naito M, Ohashi S, Iwasawa M, Kadoguchi T, Mitomi H, Matsui T, Furukawa H, Fukui N. Analysis of proteins released from osteoarthritic cartilage by compressive loading. Sci Rep 2023; 13:18292. [PMID: 37880329 PMCID: PMC10600228 DOI: 10.1038/s41598-023-45472-x] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 10/19/2023] [Indexed: 10/27/2023] Open
Abstract
In osteoarthritis (OA), synovial pathology may be induced by proteins released from degenerated cartilage. This study was conducted to identify the proteins released from OA cartilage. OA cartilage was obtained from OA knees at macroscopically preserved areas (PRES) and degenerated areas (DEG), while control cartilage (CONT) was collected from non-arthritic knees. Released proteins were obtained from these cartilage samples by repeatedly applying compressive loading, which simulated loading on cartilage in vivo. The released proteins were analyzed comprehensively by antibody array analyses and a quantitative proteomic analysis. For several proteins, the exact amounts released were determined by Luminex assays. The amount of active TGF-β that was released was determined by an assay using genetically-engineered HEK cells. The results of the antibody array and proteomic analyses revealed that various biologically active proteins are released from OA cartilage, particularly from DEG, by loading. The Luminex assay confirmed that several alarmins, complement proteins C3a and C5a, and several angiogenic proteins including FGF-1, FGF-2 and VEGF-A were released in greater amounts from DEG than from CONT. The HEK cell assay indicated that active TGF-β was released from DEG at biologically significant levels. These findings may be helpful in understanding the pathology of OA.
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Affiliation(s)
- Hirotaka Tsuno
- Clinical Research Center, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan
| | - Nobuho Tanaka
- Clinical Research Center, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan
| | - Masashi Naito
- Department of Orthopaedic Surgery, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan
| | - Satoru Ohashi
- Department of Orthopaedic Surgery, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan
| | - Mitsuyasu Iwasawa
- Department of Orthopaedic Surgery, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan
| | - Tomoyasu Kadoguchi
- Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
| | - Hiroyuki Mitomi
- Department of Diagnostic Pathology, Odawara Municipal Hospital, Odawara, Kanagawa, Japan
| | - Toshihiro Matsui
- Clinical Research Center, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan
| | - Hiroshi Furukawa
- Clinical Research Center, National Hospital Organization Tokyo Hospital, Kiyose, Tokyo, Japan
| | - Naoshi Fukui
- Clinical Research Center, National Hospital Organization Sagamihara Hospital, Sagamihara, Kanagawa, Japan.
- Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan.
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Nakano M, Gemma R, Sato H. Unraveling the role of prenyl side-chain interactions in stabilizing the secondary carbocation in the biosynthesis of variexenol B. Beilstein J Org Chem 2023; 19:1503-1510. [PMID: 37799177 PMCID: PMC10548252 DOI: 10.3762/bjoc.19.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/07/2023] [Indexed: 10/07/2023] Open
Abstract
Terpene cyclization reactions involve a number of carbocation intermediates. In some cases, these carbocations are stabilized by through-space interactions with π orbitals. Several terpene/terpenoids, such as sativene, santalene, bergamotene, ophiobolin and mangicol, possess prenyl side chains that do not participate in the cyclization reaction. The role of these prenyl side chains has been partially investigated, but remains elusive in the cyclization cascade. In this study, we focus on variexenol B that is synthesized from iso-GGPP, as recently reported by Dickschat and co-workers, and investigate the possibility of through-space interactions with prenyl side chains using DFT calculations. Our calculations show that (i) the unstable secondary carbocation is stabilized by the cation-π interaction from prenyl side chains, thereby lowering the activation energy, (ii) the four-membered ring formation is completed through bridging from the exomethylene group, and (iii) the annulation from the exomethylene group proceeds in a barrier-free manner.
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Affiliation(s)
- Moe Nakano
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Rintaro Gemma
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Hajime Sato
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
- PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332–0012, Japan
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Takahashi T, Watanabe S, Hino M, Takeda H, Ito T. Excellent short-term results of dome-shaped high tibial osteotomy combined with all-inside anterior cruciate ligament reconstruction. J Exp Orthop 2023; 10:69. [PMID: 37428298 DOI: 10.1186/s40634-023-00632-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/23/2023] [Indexed: 07/11/2023] Open
Abstract
PURPOSE This study aimed to evaluate short-term outcomes at least 2 years after dome-shaped high tibial osteotomy (HTO) combined with all-inside anterior cruciate ligament reconstruction (ACL) in patients with persistent ACL insufficiency accompanied by pain due to varus deformity. METHODS The study enrolled 19 knees of 18 patients. The mean age was 58.4 ± 13.4 years and the mean postoperative follow-up period was 31.4 ± 6.6 months (24-49 months). JOA(Japanese Orthopaedic Association)-OA(osteoarthritis) score, Lysholm score, radiographic outcomes such as femoro-tibia angle (FTA) in a standing position, side-to-side difference in KT-1000 measurements were evaluated at pre op. and post operative final follow up. And arthroscopic evaluation was evaluated at the time of the HTO plate-removal procedure. RESULTS Before surgery, the mean JOA-OA score was 65.0 ± 13.5, the mean Lysholm score was 47.2 ± 16.2, the mean femoro-tibia angle (FTA) in a standing position was 183.8 ± 3.4° (range;180-190°), and the mean side-to-side difference in KT-1000 measurements was 4.1 ± 1.3 mm. After surgery, the mean JOA-OA score, Lysholm score, and side-to-side difference in KT-1000 measurements improved to 93.1 ± 6.0 (P < 0.00001), 94.2 ± 5.9 (P < 0.00001), and -0.2 ± 0.8 mm (P < 0.00001), respectively. The mean FTA decreased to 168.0 ± 3.3 (P < 0.00001), and the mean posterior tibial slope angle decreased to 5.0 ± 3.6° from 6.9 ± 2.6° preoperatively (P = 0.024). Arthroscopic evaluation during the HTO plate-removal procedure of 17 knees were performed at a mean of 16 months after the surgery. The reconstructed ACL graft in 13 knees were successful, a cyclops lesion in one knee, and looseness of the graft in three knees. CONCLUSIONS Dome-shaped HTO allows for a relatively high degree of varus correction and decreases the steep posterior tibial slope that causes excessive load on the ACL. Therefore, its use in combination with ACL reconstruction seems to be effective.
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Affiliation(s)
- Toshiaki Takahashi
- Department of Sports and Health Science, Faculty of Collaborating Regional Innovation, Ehime University, 3 Bunkyo-Cho, Matsuyama, Ehime, 790-8577, Japan.
| | - Seiji Watanabe
- Department of Orthopaedic Surgery, Watanabe Hospital, Matsuyama, Ehime, 791-0054, Japan
| | - Masanori Hino
- Department of Orthopaedic Surgery, Saijo Central Hospital, Saijo, Ehime, 793-0027, Japan
| | - Haruhiko Takeda
- Department of Orthopaedic Surgery, Saijo Central Hospital, Saijo, Ehime, 793-0027, Japan
| | - Toshio Ito
- Department of Orthopaedic Surgery, Murakami Memorial Hospital, Saijo, Ehime, 793-0030, Japan
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11
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Nakamura T, Sakaguchi H, Mohri H, Ninoyu Y, Goto A, Yamaguchi T, Hishikawa Y, Matsuda M, Saito N, Ueyama T. Dispensable role of Rac1 and Rac3 after cochlear hair cell specification. J Mol Med (Berl) 2023; 101:843-854. [PMID: 37204479 PMCID: PMC10300165 DOI: 10.1007/s00109-023-02317-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 04/03/2023] [Accepted: 04/11/2023] [Indexed: 05/20/2023]
Abstract
Rac small GTPases play important roles during embryonic development of the inner ear; however, little is known regarding their function in cochlear hair cells (HCs) after specification. Here, we revealed the localization and activation of Racs in cochlear HCs using GFP-tagged Rac plasmids and transgenic mice expressing a Rac1-fluorescence resonance energy transfer (FRET) biosensor. Furthermore, we employed Rac1-knockout (Rac1-KO, Atoh1-Cre;Rac1flox/flox) and Rac1 and Rac3 double KO (Rac1/Rac3-DKO, Atoh1-Cre;Rac1flox/flox;Rac3-/-) mice, under the control of the Atoh1 promoter. However, both Rac1-KO and Rac1/Rac3-DKO mice exhibited normal cochlear HC morphology at 13 weeks of age and normal hearing function at 24 weeks of age. No hearing vulnerability was observed in young adult (6-week-old) Rac1/Rac3-DKO mice even after intense noise exposure. Consistent with prior reports, the results from Atoh1-Cre;tdTomato mice confirmed that the Atoh1 promoter became functional only after embryonic day 14 when the sensory HC precursors exit the cell cycle. Taken together, these findings indicate that although Rac1 and Rac3 contribute to the early development of sensory epithelia in cochleae, as previously shown, they are dispensable for the maturation of cochlear HCs in the postmitotic state or for hearing maintenance following HC maturation. KEY MESSAGES: Mice with Rac1 and Rac3 deletion were generated after HC specification. Knockout mice exhibit normal cochlear hair cell morphology and hearing. Racs are dispensable for hair cells in the postmitotic state after specification. Racs are dispensable for hearing maintenance after HC maturation.
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Affiliation(s)
- Takashi Nakamura
- Laboratory of Molecular Pharmacology, Biosignal Research Center, Kobe University, Kobe, 657-8501, Japan
- Department of Otolaryngology-Head and Neck Surgery, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Hirofumi Sakaguchi
- Department of Otolaryngology-Head and Neck Surgery, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Hiroaki Mohri
- Laboratory of Molecular Pharmacology, Biosignal Research Center, Kobe University, Kobe, 657-8501, Japan
| | - Yuzuru Ninoyu
- Laboratory of Molecular Pharmacology, Biosignal Research Center, Kobe University, Kobe, 657-8501, Japan
| | - Akihiro Goto
- Graduate School of Biostudies, Kyoto University, Kyoto, 606-8315, Japan
| | - Taro Yamaguchi
- Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Setsunan University, Hirakata, 573-0101, Japan
| | - Yoshitaka Hishikawa
- Department of Anatomy, Histochemistry and Cell Biology, Faculty of Medicine, University of Miyazaki, Miyazaki, 889-1692, Japan
| | - Michiyuki Matsuda
- Graduate School of Biostudies, Kyoto University, Kyoto, 606-8315, Japan
| | - Naoaki Saito
- Laboratory of Molecular Pharmacology, Biosignal Research Center, Kobe University, Kobe, 657-8501, Japan
| | - Takehiko Ueyama
- Laboratory of Molecular Pharmacology, Biosignal Research Center, Kobe University, Kobe, 657-8501, Japan.
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12
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Matsuyama T, Togashi K, Nakano M, Sato H, Uchiyama M. Revision of the Peniroquesine Biosynthetic Pathway by Retro-Biosynthetic Theoretical Analysis: Ring Strain Controls the Unique Carbocation Rearrangement Cascade. JACS Au 2023; 3:1596-1603. [PMID: 37388688 PMCID: PMC10301677 DOI: 10.1021/jacsau.3c00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 07/01/2023]
Abstract
Peniroquesine, a sesterterpenoid featuring a unique 5/6/5/6/5 fused pentacyclic ring system, has been known for a long time, but its biosynthetic pathway/mechanism remains elusive. Based on isotopic labeling experiments, a plausible biosynthetic pathway to peniroquesines A-C and their derivatives was recently proposed, in which the characteristic peniroquesine-type 5/6/5/6/5 pentacyclic skeleton is synthesized from geranyl-farnesyl pyrophosphate (GFPP) via a complex concerted A/B/C-ring formation, repeated reverse-Wagner-Meerwein alkyl shifts, three successive secondary (2°) carbocation intermediates, and a highly distorted trans-fused bicyclo[4.2.1]nonane intermediate. However, our density functional theory calculations do not support this mechanism. By applying a retro-biosynthetic theoretical analysis strategy, we were able to find a preferred pathway for peniroquesine biosynthesis, involving a multistep carbocation cascade including triple skeletal rearrangements, trans-cis isomerization, and 1,3-H shift. This pathway/mechanism is in good agreement with all of the reported isotope-labeling results.
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Affiliation(s)
- Taro Matsuyama
- Graduate
School of Pharmaceutical Sciences, The University
of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ko Togashi
- Graduate
School of Pharmaceutical Sciences, The University
of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Moe Nakano
- Interdisciplinary
Graduate School of Medicine and Engineering, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Hajime Sato
- Interdisciplinary
Graduate School of Medicine and Engineering, University of Yamanashi, 4-4-37 Takeda, Kofu, Yamanashi 400-8510, Japan
| | - Masanobu Uchiyama
- Graduate
School of Pharmaceutical Sciences, The University
of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Research
Initiative for Supra-Materials (RISM), Shinshu
University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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13
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Kida M, Nakamura T, Kobayashi K, Shimosawa T, Murata T. Urinary lipid profile of patients with coronavirus diseases 2019. Front Med (Lausanne) 2022; 9:941563. [PMID: 36226145 PMCID: PMC9548532 DOI: 10.3389/fmed.2022.941563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
The coronavirus diseases 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is ongoing. Over 490 million people have been infected with this virus worldwide. Although many patients present with lower respiratory symptoms, some may progress to acute respiratory distress syndrome and even multi-organ damage. Therefore, there is an urgent need to establish treatment and management methods for this infectious disease. Here, we comprehensively analyzed urinary lipid mediators and their metabolites to identify non-invasive biomarkers that reflect the disease status of COVID-19 patients. We diagnosed 16 patients by polymerase chain reaction (PCR) analysis, who presented with mild-to-moderate symptoms, including fever and cough, between May and October 2020 in Japan, and collected their urine samples. Using mass spectrometry, we analyzed the lipid metabolites in these urine samples. In all the urine samples from the patients, 21 types of fatty acids and their metabolites were consistently detected in the samples among the 214 metabolites which were analyzed. Interestingly, urinary levels of fatty acids, docosahexaenoic acid was increased by approximately 3-fold in patients with COVID-19 compared to those in healthy subjects. Metabolites of major proinflammatory lipid mediators, PGE2, TXA2, and PGF2α, were also detected at significantly higher levels in the urine of patients with COVID-19. These observations suggest that urinary lipids can reflect the inflammatory status of patients with COVID-19, which can be a useful index to manage this disease.
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Affiliation(s)
- Misato Kida
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tatsuro Nakamura
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Koji Kobayashi
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Tatsuo Shimosawa
- Department of Clinical Laboratory, International University of Health and Welfare, Chiba, Japan
| | - Takahisa Murata
- Department of Animal Radiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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14
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Fujikawa J, Morigaki R, Yamamoto N, Oda T, Nakanishi H, Izumi Y, Takagi Y. Therapeutic Devices for Motor Symptoms in Parkinson’s Disease: Current Progress and a Systematic Review of Recent Randomized Controlled Trials. Front Aging Neurosci 2022; 14:807909. [PMID: 35462692 PMCID: PMC9020378 DOI: 10.3389/fnagi.2022.807909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/14/2022] [Indexed: 11/29/2022] Open
Abstract
Background Pharmacotherapy is the first-line treatment option for Parkinson’s disease, and levodopa is considered the most effective drug for managing motor symptoms. However, side effects such as motor fluctuation and dyskinesia have been associated with levodopa treatment. For these conditions, alternative therapies, including invasive and non-invasive medical devices, may be helpful. This review sheds light on current progress in the development of devices to alleviate motor symptoms in Parkinson’s disease. Methods We first conducted a narrative literature review to obtain an overview of current invasive and non-invasive medical devices and thereafter performed a systematic review of recent randomized controlled trials (RCTs) of these devices. Results Our review revealed different characteristics of each device and their effectiveness for motor symptoms. Although invasive medical devices are usually highly effective, surgical procedures can be burdensome for patients and have serious side effects. In contrast, non-pharmacological/non-surgical devices have fewer complications. RCTs of non-invasive devices, especially non-invasive brain stimulation and mechanical peripheral stimulation devices, have proven effectiveness on motor symptoms. Nearly no non-invasive devices have yet received Food and Drug Administration certification or a CE mark. Conclusion Invasive and non-invasive medical devices have unique characteristics, and several RCTs have been conducted for each device. Invasive devices are more effective, while non-invasive devices are less effective and have lower hurdles and risks. It is important to understand the characteristics of each device and capitalize on these.
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Affiliation(s)
- Joji Fujikawa
- Department of Advanced Brain Research, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
| | - Ryoma Morigaki
- Department of Advanced Brain Research, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
- Department of Neurosurgery, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
- *Correspondence: Ryoma Morigaki,
| | - Nobuaki Yamamoto
- Department of Advanced Brain Research, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
- Department of Neurology, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
| | - Teruo Oda
- Department of Advanced Brain Research, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
| | - Hiroshi Nakanishi
- Department of Neurosurgery, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
| | - Yuishin Izumi
- Department of Neurology, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
| | - Yasushi Takagi
- Department of Advanced Brain Research, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
- Department of Neurosurgery, Institute of Biomedical Sciences, Graduate School of Medicine, Tokushima University, Tokushima, Japan
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15
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Oziri OJ, Wang Y, Watanabe T, Uno S, Maeki M, Tokeshi M, Isono T, Tajima K, Satoh T, Sato SI, Miura Y, Yamamoto T. PEGylation of silver nanoparticles by physisorption of cyclic poly(ethylene glycol) for enhanced dispersion stability, antimicrobial activity, and cytotoxicity. Nanoscale Adv 2022; 4:532-545. [PMID: 36132700 PMCID: PMC9417676 DOI: 10.1039/d1na00720c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/11/2021] [Indexed: 05/17/2023]
Abstract
Silver nanoparticles (AgNPs) are practically valuable in biological applications. However, no steady PEGylation has been established, which is essential for internal use in humans or animals. In this study, cyclic PEG (c-PEG) without any chemical inhomogeneity is physisorbed onto AgNPs to successfully PEGylate and drastically enhance the dispersion stability against physiological conditions, white light, and high temperature. In contrast, linear HO-PEG-OH and MeO-PEG-OMe do not confer stability to AgNPs, and HS-PEG-OMe, which is often used for gold nanoparticles, sulfidates the surface to considerably degrade the properties. TEM shows an essentially intact nanostructure of c-PEG-physisorbed AgNPs even after heating at 95 °C, while complete disturbance is observed for other AgNPs. Molecular weight- and concentration-dependent stabilization by c-PEG is investigated, and DLS and ζ-potential measurements prove the formation of a c-PEG layer on the surface of AgNPs. Furthermore, c-PEG-physisorbed AgNPs exhibit persistent antimicrobial activity and cytotoxicity.
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Affiliation(s)
| | - Yubo Wang
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Tomohisa Watanabe
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Shuya Uno
- Graduate School of Chemical Sciences and Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Masatoshi Maeki
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Manabu Tokeshi
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Takuya Isono
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Kenji Tajima
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Toshifumi Satoh
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Shin-Ichiro Sato
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Yutaka Miura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology 4259 Nagatsutacho, Midori-ku Yokohama Kanagawa 226-8503 Japan
| | - Takuya Yamamoto
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
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16
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Harada K, Ishinuki T, Ohashi Y, Tanaka T, Chiba A, Numasawa K, Imai T, Hayasaka S, Tsugiki T, Miyanishi K, Nagayama M, Takemasa I, Kato J, Mizuguchi T. Nature of the liver volume depending on the gender and age assessing volumetry from a reconstruction of the computed tomography. PLoS One 2021; 16:e0261094. [PMID: 34879120 PMCID: PMC8654223 DOI: 10.1371/journal.pone.0261094] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 11/23/2021] [Indexed: 11/18/2022] Open
Abstract
Although the liver is a regenerating organ, excessive loss of liver volume (LV) can cause fatal liver failure. It is unclear whether LV is correlated with age; however, it is known that liver function decreases with age. In addition, the gender-related role of LV remains unclear. This study aimed to investigate the changes in LV by age and gender. Between January and December 2018, 374 consecutive patients who underwent abdominal multidetector computed tomography (MDCT) for any abdominal examinations were enrolled. LV was evaluated using MDCT. The relationship between the LV and body mass index (BMI), body surface area (BSA), age, and gender was investigated. The modified LV (mLV) was calculated by a formula measured LV × 1.5/BSA. LV correlated to BSA more than to BMI in both the males (R: 0.559 vs. 0.416) and females (R: 0.479 vs. 0.300) in our study. Age was negatively correlated to LV and BSA, and correlated to LV more than to BSA in males (R: 0.546 vs. 0.393) and females (R: 0.506 vs. 0.385). In addition, the absolute slope between age and LV in the males was higher than that in the females (14.1 vs. 10.2, respectively). Furthermore, the absolute slope of age and mLV in the males was slightly higher than in the females (9.1 vs. 7.3, respectively). In conclusion, LV in the normal liver is correlated to age rather than the one in the diseased liver. Liver volume in the males decreased more with age than LV in the females.
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Affiliation(s)
- Kohei Harada
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
- * E-mail:
| | - Tomohiro Ishinuki
- Postgraduate School of Health Science and Medicine, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Yoshiya Ohashi
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
| | - Takeo Tanaka
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
| | - Ayaka Chiba
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
| | - Kanako Numasawa
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
| | - Tatsuya Imai
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
| | - Shun Hayasaka
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
| | - Takahito Tsugiki
- Division of Radiology, Sapporo Medical University Hospital, Sapporo, Hokkaido, Japan
| | - Koji Miyanishi
- Department of Medical Oncology, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Minoru Nagayama
- Departments of Surgery, Surgical Science and Oncology, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Ichiro Takemasa
- Departments of Surgery, Surgical Science and Oncology, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Junji Kato
- Department of Medical Oncology, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Toru Mizuguchi
- Postgraduate School of Health Science and Medicine, Sapporo Medical University, Sapporo, Hokkaido, Japan
- Departments of Surgery, Surgical Science and Oncology, Sapporo Medical University, Sapporo, Hokkaido, Japan
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17
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Nakajima T, Kanno T, Yokoyama S, Sasamoto S, Asou HK, Tumes DJ, Ohara O, Nakayama T, Endo Y. ACC1-expressing pathogenic T helper 2 cell populations facilitate lung and skin inflammation in mice. J Exp Med 2021; 218:e20210639. [PMID: 34813654 PMCID: PMC8614157 DOI: 10.1084/jem.20210639] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 09/12/2021] [Accepted: 10/22/2021] [Indexed: 12/14/2022] Open
Abstract
T cells possess distinguishing effector functions and drive inflammatory disorders. We have previously identified IL-5-producing Th2 cells as the pathogenic population predominantly involved in the pathology of allergic inflammation. However, the cell-intrinsic signaling pathways that control the pathogenic Th2 cell function are still unclear. We herein report the high expression of acetyl-CoA carboxylase 1 (ACC1) in the pathogenic CD4+ T cell population in the lung and skin. The genetic deletion of CD4+ T cell-intrinsic ACC1 dampened eosinophilic and basophilic inflammation in the lung and skin by constraining IL-5 or IL-3 production. Mechanistically, ACC1-dependent fatty acid biosynthesis induces the pathogenic cytokine production of CD4+ T cells via metabolic reprogramming and the availability of acetyl-CoA for epigenetic regulation. We thus identified a distinct phenotype of the pathogenic T cell population in the lung and skin, and ACC1 was shown to be an essential regulator controlling the pathogenic function of these populations to promote type 2 inflammation.
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Affiliation(s)
- Takahiro Nakajima
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Toshio Kanno
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Satoru Yokoyama
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Shigemi Sasamoto
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Hikari K. Asou
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
| | - Damon J. Tumes
- Centre for Cancer Biology, University of South Australia, North Terrace, Adelaide, Australia
| | - Osamu Ohara
- Department of Applied Genomics Kazusa DNA Research Institute, Chiba, Japan
| | - Toshinori Nakayama
- Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
- AMED-CREST, AMED, Chiba, Japan
| | - Yusuke Endo
- Department of Frontier Research and Development, Laboratory of Medical Omics Research, Kazusa DNA Research Institute, Chiba, Japan
- Department of Omics Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
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18
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Barabona G, Mahiti M, Toyoda M, Kamori D, Masoud S, Judicate GP, Sunguya B, Lyamuya E, Ueno T. Advanced baseline immunosuppression is associated with elevated levels of plasma markers of fungal translocation and inflammation in long-term treated HIV-infected Tanzanians. AIDS Res Ther 2021; 18:55. [PMID: 34446039 PMCID: PMC8394626 DOI: 10.1186/s12981-021-00381-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 08/17/2021] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND For over a decade, antiretroviral therapy (ART) in resource-limited countries was only recommended for patients with advanced HIV disease. We investigated this group of patients in order to determine any relationship between degree of immunosuppression during treatment initiation and the subsequent levels of inflammatory biomarkers, reservoir size and plasma marker of fungal translocation after achieving long-term virological control. METHODS We analyzed 115 virally suppressed (female 83.5%) and 40 untreated (female 70%) subjects from Dar es Salaam, Tanzania. The size of HIV latent reservoir (proviral DNA copy) was determined using quantitative PCR. Inflammatory biomarkers; IL-6, IL-10, and soluble CD14 (sCD14), were measured using multiplex cytometric beads array. Antibody titers for Cytomegalovirus (CMV) and Epstein Barr virus (EBV), plasma level of 1-3-beta-D-Glucan (BDG) was measured using ELISA. High-sensitivity C-reactive protein (hsCRP) was measured using nephelometric method. RESULTS The median age was 36 (IQR 32-44) and 47 (IQR 43-54) years in untreated and virally suppressed patients respectively. Median duration of treatment for virally suppressed patients was 9 years (IQR 7-12) and median baseline CD4 count was 147 cells/mm3 (IQR 65-217). Virally suppressed patients were associated with significantly lower plasma levels of IL-10, sCD14 and BDG (P < 0.05) when compared to untreated patients. However, plasma level of IL-6 was similar between the groups. Baseline advanced level of immunosuppression (CD4 < 100cells/cm3) was associated with significantly higher plasma level of IL-6 (P = 0.02), hsCRP (P = 0.036) and BDG (P = 0.0107). This relationship was not seen in plasma levels of other tested markers. Degree of baseline immunosuppression was not associated with the subsequent proviral DNA copy. In addition, plasma levels of inflammatory marker were not associated with sex, CMV or EBV antibody titers, treatment duration or regimen. CONCLUSIONS Our data suggest that advanced immunosuppression at ART initiation is associated with severity of inflammation and elevated fungal translocation marker despite long term virological control. Further studies are needed to evaluate the potential increased burden of non-AIDS comorbidities that are linked to elevated inflammatory and fungal translocation markers as a result of the policy of HIV treatment at CD4 count < 200 cells/cm3 implemented for over a decade in Tanzania.
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Affiliation(s)
- Godfrey Barabona
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Chuo-ku, Honjo, Kumamoto, 860-0811, Japan
| | - Macdonald Mahiti
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Mako Toyoda
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Chuo-ku, Honjo, Kumamoto, 860-0811, Japan
| | - Doreen Kamori
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Salim Masoud
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - George P Judicate
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Chuo-ku, Honjo, Kumamoto, 860-0811, Japan
| | - Bruno Sunguya
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Chuo-ku, Honjo, Kumamoto, 860-0811, Japan
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Eligius Lyamuya
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Chuo-ku, Honjo, Kumamoto, 860-0811, Japan
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Takamasa Ueno
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, 2-2-1 Chuo-ku, Honjo, Kumamoto, 860-0811, Japan.
- Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.
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19
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Yamane M, Takaoka N, Obara K, Shirai K, Aki R, Hamada Y, Arakawa N, Hoffman RM, Amoh Y. Hair-Follicle-Associated Pluripotent (HAP) Stem Cells Can Extensively Differentiate to Tyrosine-Hydroxylase-Expressing Dopamine-Secreting Neurons. Cells 2021; 10:864. [PMID: 33920157 PMCID: PMC8069047 DOI: 10.3390/cells10040864] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 12/27/2022] Open
Abstract
Hair-follicle-associated pluripotent (HAP) stem cells are located in the bulge area of hair follicles from mice and humans and have been shown to differentiate to neurons, glia, keratinocytes, smooth muscle cells, melanocytes and beating cardiac muscle cells in vitro. Subsequently, we demonstrated that HAP stem cells could effect nerve and spinal-cord regeneration in mouse models, differentiating to Schwann cells and neurons in this process. HAP stem cells can be banked by cryopreservation and preserve their ability to differentiate. In the present study, we demonstrated that mouse HAP stem cells cultured in neural-induction medium can extensively differentiate to dopaminergic neurons, which express tyrosine hydroxylase and secrete dopamine. These results indicate that the dopaminergic neurons differentiated from HAP stem cells may be useful in the future to improve the symptoms of Parkinson's disease in the clinic.
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Affiliation(s)
- Michiko Yamane
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
| | - Nanako Takaoka
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
| | - Koya Obara
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
| | - Kyoumi Shirai
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
| | - Ryoichi Aki
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
| | - Yuko Hamada
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
| | - Nobuko Arakawa
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
| | - Robert M. Hoffman
- AntiCancer, Inc., 7917 Ostrow Street, San Diego, CA 92111, USA
- Department of Surgery, University of California, San Diego, CA 92037-7220, USA
| | - Yasuyuki Amoh
- Department of Dermatology, Kitasato University School of Medicine, Minami Ward, Sagamihara 252-0374, Japan; (M.Y.); (N.T.); (K.O.); (K.S.); (R.A.); (Y.H.); (N.A.)
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20
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Matsuo T, Isosaka T, Hayashi Y, Tang L, Doi A, Yasuda A, Hayashi M, Lee CY, Cao L, Kutsuna N, Matsunaga S, Matsuda T, Yao I, Setou M, Kanagawa D, Higasa K, Ikawa M, Liu Q, Kobayakawa R, Kobayakawa K. Thiazoline-related innate fear stimuli orchestrate hypothermia and anti-hypoxia via sensory TRPA1 activation. Nat Commun 2021; 12:2074. [PMID: 33824316 PMCID: PMC8024280 DOI: 10.1038/s41467-021-22205-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 02/22/2021] [Indexed: 01/09/2023] Open
Abstract
Thiazoline-related innate fear-eliciting compounds (tFOs) orchestrate hypothermia, hypometabolism, and anti-hypoxia, which enable survival in lethal hypoxic conditions. Here, we show that most of these effects are severely attenuated in transient receptor potential ankyrin 1 (Trpa1) knockout mice. TFO-induced hypothermia involves the Trpa1-mediated trigeminal/vagal pathways and non-Trpa1 olfactory pathway. TFOs activate Trpa1-positive sensory pathways projecting from trigeminal and vagal ganglia to the spinal trigeminal nucleus (Sp5) and nucleus of the solitary tract (NTS), and their artificial activation induces hypothermia. TFO presentation activates the NTS-Parabrachial nucleus pathway to induce hypothermia and hypometabolism; this activation was suppressed in Trpa1 knockout mice. TRPA1 activation is insufficient to trigger tFO-mediated anti-hypoxic effects; Sp5/NTS activation is also necessary. Accordingly, we find a novel molecule that enables mice to survive in a lethal hypoxic condition ten times longer than known tFOs. Combinations of appropriate tFOs and TRPA1 command intrinsic physiological responses relevant to survival fate.
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Affiliation(s)
- Tomohiko Matsuo
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Tomoko Isosaka
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Yuichiro Hayashi
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Lijun Tang
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Akihiro Doi
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Aiko Yasuda
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Mikio Hayashi
- Department of Cellular and Functional Biology, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Chia-Ying Lee
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Liqin Cao
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Natsumaro Kutsuna
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Chiba, Japan
- LPixel Inc., Tokyo, Japan
| | - Sachihiro Matsunaga
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Chiba, Japan
| | - Takeshi Matsuda
- Department of Optical Imaging, Institute for Medical Photonics Research, PMPERC and IMIC, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Ikuko Yao
- Department of Optical Imaging, Institute for Medical Photonics Research, PMPERC and IMIC, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Mitsuyoshi Setou
- Department of Cellular and Molecular Anatomy and IMIC, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Dai Kanagawa
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Koichiro Higasa
- Department of Genome Analysis, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Qinghua Liu
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, Japan.
- National Institute of Biological Sciences, Beijing, China.
| | - Reiko Kobayakawa
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan.
| | - Ko Kobayakawa
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Osaka, Japan.
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21
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Thanee M, Dokduang H, Kittirat Y, Phetcharaburanin J, Klanrit P, Titapun A, Namwat N, Khuntikeo N, Wangwiwatsin A, Saya H, Loilome W. CD44 modulates metabolic pathways and altered ROS-mediated Akt signal promoting cholangiocarcinoma progression. PLoS One 2021; 16:e0245871. [PMID: 33780455 PMCID: PMC8007026 DOI: 10.1371/journal.pone.0245871] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 01/10/2021] [Indexed: 12/12/2022] Open
Abstract
CD44 is a transmembrane glycoprotein, the phosphorylation of which can directly trigger intracellular signaling, particularly Akt protein, for supporting cell growth, motility and invasion. This study examined the role of CD44 on the progression of Cholangiocarcinoma (CCA) using metabolic profiling to investigate the molecular mechanisms involved in the Akt signaling pathway. Our results show that the silencing of CD44 decreases Akt and mTOR phosphorylation resulting in p21 and Bax accumulation and Bcl-2 suppression that reduces cell proliferation. Moreover, an inhibition of cell migration and invasion regulated by CD44. Similarly, the silencing of CD44 showed an alteration in the epithelial-mesenchymal transition (EMT), e.g. an upregulation of E-cadherin and a downregulation of vimentin, and the reduction of the matrix metalloproteinase (MMP)-9 signal. Interestingly, a depletion of CD44 leads to metabolic pathway changes resulting in redox status modification and Trolox (anti-oxidant) led to the recovery of the cancer cell functions. Based on our findings, the regulation of CCA progression and metastasis via the redox status-related Akt signaling pathway depends on the alteration of metabolic profiling synchronized by CD44.
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Affiliation(s)
- Malinee Thanee
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Hasaya Dokduang
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Yingpinyapat Kittirat
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Jutarop Phetcharaburanin
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Poramate Klanrit
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Attapol Titapun
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Nisana Namwat
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Narong Khuntikeo
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Arporn Wangwiwatsin
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Hideyuki Saya
- Division of Gene Regulation, Institute for Advanced Medical Research (IAMR), Keio University School of Medicine, Tokyo, Japan
| | - Watcharin Loilome
- Cholangiocarcinoma Screening and Care Program (CASCAP), Khon Kaen University, Khon Kaen, Thailand
- Cholangiocarcinoma Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- * E-mail:
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22
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Matsuo T, Isosaka T, Tang L, Soga T, Kobayakawa R, Kobayakawa K. Artificial hibernation/life-protective state induced by thiazoline-related innate fear odors. Commun Biol 2021; 4:101. [PMID: 33483561 PMCID: PMC7822961 DOI: 10.1038/s42003-020-01629-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 12/22/2020] [Indexed: 12/16/2022] Open
Abstract
Innate fear intimately connects to the life preservation in crises, although this relationships is not fully understood. Here, we report that presentation of a supernormal innate fear inducer 2-methyl-2-thiazoline (2MT), but not learned fear stimuli, induced robust systemic hypothermia/hypometabolism and suppressed aerobic metabolism via phosphorylation of pyruvate dehydrogenase, thereby enabling long-term survival in a lethal hypoxic environment. These responses exerted potent therapeutic effects in cutaneous and cerebral ischemia/reperfusion injury models. In contrast to hibernation, 2MT stimulation accelerated glucose uptake in the brain and suppressed oxygen saturation in the blood. Whole-brain mapping and chemogenetic activation revealed that the sensory representation of 2MT orchestrates physiological responses via brain stem Sp5/NST to midbrain PBN pathway. 2MT, as a supernormal stimulus of innate fear, induced exaggerated, latent life-protective effects in mice. If this system is preserved in humans, it may be utilized to give rise to a new field: "sensory medicine."
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Affiliation(s)
- Tomohiko Matsuo
- Institute of Biomedical Science, Kansai Medical University, Osaka, 573-1010, Japan
| | - Tomoko Isosaka
- Institute of Biomedical Science, Kansai Medical University, Osaka, 573-1010, Japan
| | - Lijun Tang
- Institute of Biomedical Science, Kansai Medical University, Osaka, 573-1010, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, 997-0052, Japan
| | - Reiko Kobayakawa
- Institute of Biomedical Science, Kansai Medical University, Osaka, 573-1010, Japan.
| | - Ko Kobayakawa
- Institute of Biomedical Science, Kansai Medical University, Osaka, 573-1010, Japan.
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23
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Tao F, Sayo K, Sugimoto K, Aoki S, Kojima N. Development of a tunable method to generate various three-dimensional microstructures by replenishing macromolecules such as extracellular matrix components and polysaccharides. Sci Rep 2020; 10:6567. [PMID: 32300241 PMCID: PMC7162899 DOI: 10.1038/s41598-020-63621-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 04/03/2020] [Indexed: 12/22/2022] Open
Abstract
Multicellular spheroids (spheroids) are expected to be a promising approach to mimic in vivo organ functions and cell microenvironments. However, conventional spheroids do not fully consider the existence of extracellular matrices (ECMs). In this study, we developed a tunable method for replenishing macromolecules, including ECM components and polysaccharides, into spheroids without compromising cell viability by injecting a microvolume cell suspension into a high density of methylcellulose dissolved in the culture medium. Adjusting the ECM concentration in the cell suspension enabled the generation of different three-dimensional microstructures, such as "ECM gel capsules", which contained individually separated cells, and "ECM-loaded spheroids", which had thin ECM layers between cells. ECM-loaded spheroids with a 30-fold dilution of Matrigel (0.3 mg/ml) showed significantly higher albumin secretion than control spheroids composed of Hep G2 or HuH-7 cells. Additionally, the expression levels of major CYP genes were decreased in ECM gel capsules with undiluted Matrigel (9 mg/ml) compared to those in control spheroids. However, 0.3 mg/ml Matrigel did not disrupt gene expression. Furthermore, cell polarity associated with tight junction proteins (ZO-1 and Claudin-1) and the transporter protein MRP2 was markedly induced by using 0.3 mg/ml Matrigel. Thus, high-performance three-dimensional tissues fabricated by this method are applicable to increasing the efficiency of drug screening and to regenerative medicine.
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Affiliation(s)
- Fumiya Tao
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Japan
| | - Kanae Sayo
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Japan
| | - Kazuyuki Sugimoto
- Solution Division, Quality Assurance and Customer Support Center, Life Innovation Business Headquarters, Yokogawa Electric Corporation, Kanazawa, Japan
| | - Shigehisa Aoki
- Department of Pathology & Microbiology, Faculty of Medicine, Saga University, Saga, Japan
| | - Nobuhiko Kojima
- Graduate School of Nanobioscience, Yokohama City University, Yokohama, Japan.
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24
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Fukami T, Uemura M, Nagao Y. Significance of incident reports by medical doctors for organizational transparency and driving forces for patient safety. Patient Saf Surg 2020; 14:13. [PMID: 32322306 PMCID: PMC7164346 DOI: 10.1186/s13037-020-00240-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/08/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Incident reporting is an effective strategy used to enhance patient safety and quality improvement in healthcare. An incident is an event that could eventually result in harm to a patient. The aim of this study is to re-evaluate the importance of reporting by medical doctors to improve quality in healthcare and patient safety. METHODS We conducted a retrospective analysis of the reported incidents registered in our institutional database from April 1st 2015 to March 31st 2019, classified according to eight variables proposed by the National University Hospital Council of Japan, to determine the type of incidents and their potential harm to patients. RESULTS Registered reports totalled 43,775, approximately 8% of which arise annually from medical doctors in clinical departments. Incidents with higher impact on patients have significantly increased the rate of reporting by medical doctors. The most frequent types of report overall concerned medication incidents, followed by infusion lines, drainage-tube devices, cure, examination, and treatment outside the operating room. The most frequent reports by medical doctors involved operation-related incidents, followed by cure, examination, treatment outside the operation room, and medications. CONCLUSION Reporting by medical doctors reflects the organizational transparency and the driving forces behind patient safety and quality improvement in healthcare. Efforts toward seamless improvement in patient safety and quality at our hospital continue apace.
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Affiliation(s)
- Tatsuya Fukami
- Department of Patient Safety, Nagoya University Hospital, Nagoya, Japan
| | - Masakazu Uemura
- Department of Patient Safety, Nagoya University Hospital, Nagoya, Japan
| | - Yoshimasa Nagao
- Department of Patient Safety, Nagoya University Hospital, Nagoya, Japan
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25
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Kubota M, Matsuoka R, Suzuki T, Yonekura K, Yanagi Y, Hashiguchi T. Molecular Mechanism of the Flexible Glycan Receptor Recognition by Mumps Virus. J Virol 2019; 93:e00344-19. [PMID: 31118251 PMCID: PMC6639266 DOI: 10.1128/jvi.00344-19] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/10/2019] [Indexed: 11/20/2022] Open
Abstract
Mumps virus (MuV) is an important aerosol-transmitted human pathogen causing epidemic parotitis, meningitis, encephalitis, and deafness. MuV preferentially uses a trisaccharide containing α2,3-linked sialic acid as a receptor. However, given the MuV tropism toward glandular tissues and the central nervous system, an additional glycan motif(s) may also serve as a receptor. Here, we performed a large-scale glycan array screen with MuV hemagglutinin-neuraminidase (MuV-HN) attachment proteins by using 600 types of glycans from The Consortium for Functional Glycomics Protein-Glycan Interaction Core in an effort to find new glycan receptor motif(s). According to the results of the glycan array, we successfully determined the crystal structures of MuV-HN proteins bound to newly identified glycan motifs, sialyl LewisX (SLeX) and the oligosaccharide portion of the GM2 ganglioside (GM2-glycan). Interestingly, the complex structures showed that SLeX and GM2-glycan share the same configuration with the reported trisaccharide motif, 3'-sialyllactose (3'-SL), at the binding site of MuV-HN, while SLeX and GM2-glycan have several unique interactions compared with those of 3'-SL. Thus, MuV-HN protein can allow an additional spatial modification in GM2-glycan and SLeX at the second and third carbohydrates from the nonreducing terminus of the core trisaccharide structure, respectively. Importantly, MuV entry was efficiently inhibited in the presence of 3'-SL, SLeX, or GM2-glycan derivatives, which indicates that these motifs can serve as MuV receptors. The α2,3-sialylated oligosaccharides, such as SLeX and 3'-sialyllactosamine, are broadly expressed in various tissues, and GM2 exists mainly in neural tissues and the adrenal gland. The distribution of these glycan motifs in human tissues/organs may have bearing on MuV tropism.IMPORTANCE Mumps virus (MuV) infection is characterized by parotid gland swelling and can cause pancreatitis, orchitis, meningitis, and encephalitis. MuV-related hearing loss is also a serious complication because it is usually irreversible. MuV outbreaks have been reported in many countries, even in high-vaccine-coverage areas. MuV has tropism toward glandular tissues and the central nervous system. To understand the unique MuV tropism, revealing the mechanism of receptor recognition by MuV is very important. Here, using a large-scale glycan array and X-ray crystallography, we show that MuV recognizes sialyl LewisX and GM2 ganglioside as receptors, in addition to a previously reported MuV receptor, a trisaccharide containing an α2,3-linked sialic acid. The flexible recognition of these glycan receptors by MuV may explain the unique tropism and pathogenesis of MuV. Structures will also provide a template for the development of effective entry inhibitors targeting the receptor-binding site of MuV.
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Affiliation(s)
- Marie Kubota
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Rei Matsuoka
- RIKEN SPring-8 Center, Biostructural Mechanism Laboratory, Hyogo, Japan
| | - Tateki Suzuki
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Koji Yonekura
- RIKEN SPring-8 Center, Biostructural Mechanism Laboratory, Hyogo, Japan
| | - Yusuke Yanagi
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Takao Hashiguchi
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
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26
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Tomata Y, Tanji F, Nurrika D, Liu Y, Abe S, Matsumoto K, Zhang S, Kotaki Y, Matsuyama S, Lu Y, Sugawara Y, Bando S, Yamazaki T, Otsuka T, Sone T, Tsuji I. Randomised controlled trial of a financial incentive for increasing the number of daily walking steps: study protocol. BMJ Open 2019; 9:e026086. [PMID: 31221872 PMCID: PMC6589016 DOI: 10.1136/bmjopen-2018-026086] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Physical activity is one of the major modifiable factors for promotion of public health. Although it has been reported that financial incentives would be effective for promoting health behaviours such as smoking cessation or attendance for cancer screening, few randomised controlled trials (RCTs) have examined the effect of financial incentives for increasing the number of daily steps among individuals in a community setting. The aim of this study is to investigate the effects of financial incentives for increasing the number of daily steps among community-dwelling adults in Japan. METHODS AND ANALYSIS This study will be a two-arm, parallel-group RCT. We will recruit community-dwelling adults who are physically inactive in a suburban area (Nakayama) of Sendai city, Japan, using leaflets and posters. Participants that meet the inclusion criteria will be randomly allocated to an intervention group or a waitlist control group. The intervention group will be offered a financial incentive (a chance to get shopping points) if participants increase their daily steps from their baseline. The primary outcome will be the average increase in the number of daily steps (at 4-6 weeks and 7-9 weeks) relative to the average number of daily steps at the baseline (1-3 weeks). For the sample size calculation, we assumed that the difference of primary outcome would be 1302 steps. ETHICS AND DISSEMINATION This study has been ethically approved by the research ethics committee of Tohoku University Graduate School of Medicine, Japan (No. 2018-1-171). The results will be submitted and published in a peer-reviewed scientific journal. TRIAL REGISTRATION NUMBER UMIN000033276; Pre-results.
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Affiliation(s)
- Yasutake Tomata
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Fumiya Tanji
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Dieta Nurrika
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yingxu Liu
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Saho Abe
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Koichi Matsumoto
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shu Zhang
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yumika Kotaki
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Sanae Matsuyama
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yukai Lu
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yumi Sugawara
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shino Bando
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Teiichiro Yamazaki
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tatsui Otsuka
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Toshimasa Sone
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Rehabilitation, Faculty of Health Science, Tohoku Fukushi University, Sendai, Japan
| | - Ichiro Tsuji
- Division of Epidemiology, Department of Health Informatics and PublicHealth, Tohoku University Graduate School of Medicine, Sendai, Japan
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27
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Kato D, Kurebayashi Y, Takahashi T, Otsubo T, Otake H, Yamazaki M, Tamoto C, Minami A, Ikeda K, Suzuki T. An easy, rapid, and sensitive method for detection of drug-resistant influenza virus by using a sialidase fluorescent imaging probe, BTP3-Neu5Ac. PLoS One 2018; 13:e0200761. [PMID: 30001430 PMCID: PMC6042793 DOI: 10.1371/journal.pone.0200761] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 07/02/2018] [Indexed: 11/20/2022] Open
Abstract
Immunochromatographic kits and RT-PCR are widely used as diagnostic tools for influenza detection in clinical and hygiene fields. Immunochromatographic kits are useful for differential typing of influenza A and influenza B but cannot show if the detected virus strains have acquired drug resistance against neuraminidase inhibitors that target sialidase activity of viral neuraminidase. Although RT-PCR enables determination of drug-resistant mutants, its efficacy is limited to viruses carrying a known substitution in their neuraminidase genome sequence. In the present study, an easy, rapid and sensitive method for detection of drug-resistant influenza viruses regardless of major antigenic changes or genomic mutations was developed. By using the method in combination with virus-concentrated membranes in centrifugal filter units and a sialidase imaging probe, 2-(benzothiazol-2-yl)-4-bromophenyl-N-acetylneuraminic acid (BTP3-Neu5Ac), sialidase activity of influenza neuraminidase was visualized on membranes by the green fluorescence of produced hydrophobic BTP3 under UV irradiation with a handheld UV flashlight. Fluorescence images in the presence or absence of neuraminidase inhibitors clearly discriminated drug-resistant influenza viruses from drug-sensitive ones. The assay can be done within 15 min. The detection sensitivity was shown to be equal to or higher than the sensitivities of commercial immunochromatographic kits. The assay will be a powerful tool for screening and monitoring of emerging drug-resistant influenza viruses and would help clinicians decide effective antiviral treatment strategies when such mutants have become prevalent.
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Affiliation(s)
- Daisuke Kato
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
| | - Yuuki Kurebayashi
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
| | - Tadanobu Takahashi
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
| | - Tadamune Otsubo
- Department of Organic Chemistry, School of Pharmaceutical Sciences, Hiroshima International University, Kure-shi, Hiroshima, Japan
| | - Hitomi Otake
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
| | - Mika Yamazaki
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
| | - Chihiro Tamoto
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
| | - Akira Minami
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
| | - Kiyoshi Ikeda
- Department of Organic Chemistry, School of Pharmaceutical Sciences, Hiroshima International University, Kure-shi, Hiroshima, Japan
| | - Takashi Suzuki
- Department of Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka-shi, Shizuoka, Japan
- * E-mail:
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28
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Aizawa H, Koarai A, Shishikura Y, Yanagisawa S, Yamaya M, Sugiura H, Numakura T, Yamada M, Ichikawa T, Fujino N, Noda M, Okada Y, Ichinose M. Oxidative stress enhances the expression of IL-33 in human airway epithelial cells. Respir Res 2018; 19:52. [PMID: 29587772 PMCID: PMC5872512 DOI: 10.1186/s12931-018-0752-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 03/19/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Interleukin-33 (IL-33) is a cytokine belonging to the IL-1 family, and its possible involvement in the pathophysiology of COPD and viral-induced exacerbations has been demonstrated. IL-33 has been shown to be increased in the airway epithelial cells from COPD patients, but the regulating mechanism of IL-33 expression in airway epithelial cells remains largely unknown. In the current study, we examined whether oxidative stress, which participates in the pathogenesis of COPD, affects the expression of IL-33 in airway epithelial cells and also evaluated the effect during viral infection. METHODS The involvement of oxidative stress in the expression of IL-33, and its signal pathway was examined after stimulation with hydrogen peroxide (H2O2), with or without stimulation by polyinosinic-polycytidylic acid [poly (I:C)], a synthetic analogue of dsRNA that mimics viral infection, or rhinovirus infection in NCI-H292 cells and primary human bronchial epithelial cells (HBECs). In addition, the effect of antioxidant, N-acetylcysteine (NAC) in the expression of IL-33 was compared between HBECs from healthy subjects and those from COPD patients. RESULTS Treatment with H2O2 significantly potentiated IL-33 expression in NCI-H292 cells, and the potentiation was reversed by NAC treatment. Mitogen-activated protein kinase (MAPK) inhibitors, but not nuclear factor-kappa B inhibitors, also significantly decreased the H2O2-potentiated IL-33 expression. In addition, H2O2 significantly potentiated the poly (I:C)- or rhinovirus-stimulated IL-33 expression. In HBECs from healthy subjects, H2O2-potentiated IL-33 expression and its reversal by NAC was also confirmed. Under the condition without H2O2-stimulation, treatment with NAC significantly decreased the expression of IL-33 in HBECs from COPD patients, but not in those from healthy subjects. CONCLUSIONS These results demonstrate that oxidative stress involves in the expression of IL-33 in airway epithelial cells via MAPK signal pathway and it augments IL-33 expression during viral infection. This mechanism may participate in the regulation of IL-33 expression in airway epithelial cells in COPD and the viral-induced exacerbations. Modulation of this pathway could become a therapeutic target for viral-induced exacerbations of COPD.
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Affiliation(s)
- Hiroyuki Aizawa
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Akira Koarai
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan.
| | - Yutaka Shishikura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Satoru Yanagisawa
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Mutsuo Yamaya
- Department of Advanced Preventive Medicine for Infectious Disease, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Hisatoshi Sugiura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Tadahisa Numakura
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Mitsuhiro Yamada
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Tomohiro Ichikawa
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Naoya Fujino
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
| | - Masafumi Noda
- Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Yoshinori Okada
- Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Masakazu Ichinose
- Department of Respiratory Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan
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29
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Matsumoto A, Tanaka M, Matsumoto H, Ochi K, Moro-oka Y, Kuwata H, Yamada H, Shirakawa I, Miyazawa T, Ishii H, Kataoka K, Ogawa Y, Miyahara Y, Suganami T. Synthetic "smart gel" provides glucose-responsive insulin delivery in diabetic mice. Sci Adv 2017; 3:eaaq0723. [PMID: 29202033 PMCID: PMC5706739 DOI: 10.1126/sciadv.aaq0723] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 10/27/2017] [Indexed: 05/20/2023]
Abstract
Although previous studies have attempted to create "electronics-free" insulin delivery systems using glucose oxidase and sugar-binding lectins as a glucose-sensing mechanism, no successful clinical translation has hitherto been made. These protein-based materials are intolerant of long-term use and storage because of their denaturing and/or cytotoxic properties. We provide a solution by designing a protein-free and totally synthetic material-based approach. Capitalizing on the sugar-responsive properties of boronic acid, we have established a synthetic polymer gel-based insulin delivery device confined within a single catheter, which exhibits an artificial pancreas-like function in vivo. Subcutaneous implantation of the device in healthy and diabetic mice establishes a closed-loop system composed of "continuous glucose sensing" and "skin layer"-regulated insulin release. As a result, glucose metabolism was controlled in response to interstitial glucose fluctuation under both insulin-deficient and insulin-resistant conditions with at least 3-week durability. Our "smart gel" technology could offer a user-friendly and remarkably economic (disposable) alternative to the current state of the art, thereby facilitating availability of effective insulin treatment not only to diabetic patients in developing countries but also to those patients who otherwise may not be strongly motivated, such as the elderly, infants, and patients in need of nursing care.
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Affiliation(s)
- Akira Matsumoto
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
- Corresponding author. (A.M.); (T.S.)
| | - Miyako Tanaka
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
| | - Hiroko Matsumoto
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kozue Ochi
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
| | - Yuki Moro-oka
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hirohito Kuwata
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
- Department of Diabetology, Nara Medical University, Nara, Japan
| | - Hironori Yamada
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ibuki Shirakawa
- Department of Organ Network and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Taiki Miyazawa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hitoshi Ishii
- Department of Diabetology, Nara Medical University, Nara, Japan
| | - Kazunori Kataoka
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, Kawasaki, Japan
- Policy Alternatives Research Institute, University of Tokyo, Tokyo, Japan
| | - Yoshihiro Ogawa
- Department of Molecular Endocrinology and Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (CREST), Tokyo, Japan
| | - Yuji Miyahara
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takayoshi Suganami
- Department of Molecular Medicine and Metabolism, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
- Corresponding author. (A.M.); (T.S.)
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30
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Jinnohara T, Kanaya T, Hase K, Sakakibara S, Kato T, Tachibana N, Sasaki T, Hashimoto Y, Sato T, Watarai H, Kunisawa J, Shibata N, Williams IR, Kiyono H, Ohno H. IL-22BP dictates characteristics of Peyer's patch follicle-associated epithelium for antigen uptake. J Exp Med 2017; 214:1607-1618. [PMID: 28512157 PMCID: PMC5460992 DOI: 10.1084/jem.20160770] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 02/15/2017] [Accepted: 04/04/2017] [Indexed: 12/19/2022] Open
Abstract
Interleukin-22 (IL-22) acts protectively and harmfully on intestinal tissue depending on the situation; therefore, IL-22 signaling needs to be tightly regulated. IL-22 binding protein (IL-22BP) binds IL-22 to inhibit IL-22 signaling. It is expressed in intestinal and lymphoid tissues, although its precise distribution and roles have remained unclear. In this study, we show that IL-22BP is highly expressed by CD11b+CD8α- dendritic cells in the subepithelial dome region of Peyer's patches (PPs). We found that IL-22BP blocks IL-22 signaling in the follicle-associated epithelium (FAE) covering PPs, indicating that IL-22BP plays a role in regulating the characteristics of the FAE. As expected, FAE of IL-22BP-deficient (Il22ra2-/-) mice exhibited altered properties such as the enhanced expression of mucus and antimicrobial proteins as well as prominent fucosylation, which are normally suppressed in FAE. Additionally, Il22ra2-/- mice exhibited the decreased uptake of bacterial antigens into PPs without affecting M cell function. Our present study thus demonstrates that IL-22BP promotes bacterial uptake into PPs by influencing FAE gene expression and function.
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Affiliation(s)
- Toshi Jinnohara
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
- Department of Medical Life Science, Division of Immunobiology, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan
| | - Takashi Kanaya
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
- Department of Medical Life Science, Division of Immunobiology, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan
| | - Koji Hase
- Division of Biochemistry, Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan
- Division of Mucosal Barriology, International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Sayuri Sakakibara
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
| | - Tamotsu Kato
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
| | - Naoko Tachibana
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
| | - Takaharu Sasaki
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
| | - Yusuke Hashimoto
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
- Department of Medical Life Science, Division of Immunobiology, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan
| | - Toshiro Sato
- Department of Gastroenterology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Hiroshi Watarai
- Division of Stem Cell Cellomics, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Jun Kunisawa
- Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
- Department of Gastroenterology, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Naoko Shibata
- Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Ifor R Williams
- Department of Pathology, Emory University School of Medicine, Atlanta, GA 30322
| | - Hiroshi Kiyono
- Division of Mucosal Immunology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 102-0076, Japan
| | - Hiroshi Ohno
- Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences, Institute of Physical and Chemical Research, Yokohama 230-0045, Japan
- Department of Medical Life Science, Division of Immunobiology, Graduate School of Medical Life Science, Yokohama City University, Yokohama 230-0045, Japan
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