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Wang Z, Yamano Y, Kawakami S, Al-Hamoud GA, Sugimoto S, Otsuka H, Matsunami K. New ψ-Santonin Derivatives from Crossostephium chinense and Their Anti-Proliferative Activities against Leishmania major and Human Cancer Cells A549. Molecules 2023; 28:8108. [PMID: 38138604 PMCID: PMC10746127 DOI: 10.3390/molecules28248108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/05/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
Previously, we reported two cytotoxic ψ-santonin-amino acid conjugates isolated from the EtOAc layer of Crossostephium chinense. However, a further phytochemical investigation seems to be required because of the few reports of similar derivatives. In this study, we targeted the 1-BuOH layer, which resulted in the isolation of seven new ψ-santonin derivatives (1-7) together with ten known compounds (8-17). The structures of 1-7 were elucidated based on spectroscopic methods, including 1D and 2D NMR experiments (1H, 13C, DEPT, COSY, HSQC, and HMBC), IR spectrum, and high-resolution electrospray ionization-mass spectrometry (HR-ESI-MS). The stereochemistry of new compounds was confirmed by NOESY and ECD calculations. All isolated compounds were evaluated by in vitro experiments for their anti-proliferative activities against Leishmania major, human lung cancer cell line A549, and Vero cells. As a result, most of the ψ-santonin derivatives, especially 1-5, showed significant cytotoxicity against L. major with a lower IC50 than the positive control we used (miltefosine).
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Affiliation(s)
- Zhichao Wang
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan; (Z.W.); (Y.Y.); (S.S.)
| | - Yoshi Yamano
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan; (Z.W.); (Y.Y.); (S.S.)
| | - Susumu Kawakami
- Graduate School of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-Ku, Hiroshima 731-0153, Japan; (S.K.); (H.O.)
| | | | - Sachiko Sugimoto
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan; (Z.W.); (Y.Y.); (S.S.)
| | - Hideaki Otsuka
- Graduate School of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-Ku, Hiroshima 731-0153, Japan; (S.K.); (H.O.)
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan; (Z.W.); (Y.Y.); (S.S.)
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Wang Z, Chitama BYA, Suganuma K, Yamano Y, Sugimoto S, Kawakami S, Kaneko O, Otsuka H, Matsunami K. Two New Cytotoxic Sesquiterpene-Amino Acid Conjugates and a Coumarin-Glucoside from Crossostephium chinense. Molecules 2023; 28:4696. [PMID: 37375252 DOI: 10.3390/molecules28124696] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
The Asteraceae family is a promising source of bioactive compounds, such as the famous Asteraceae plants Tanacetum cinerariifolium (pyrethrin) and Artemisia annua (artemisinin). As a result of our series of phytochemical studies of the subtropical plants, two novel sesquiterpenes, named crossoseamines A and B in this study (1 and 2, respectively), one undescribed coumarin-glucoside (3), and eighteen known compounds (4-21) were isolated from the aerial part of Crossostephium chinense (Asteraceae). The structures of isolated compounds were elucidated by spectroscopic methods, including 1D and 2D NMR experiments (1H, 13C, DEPT, COSY, HSQC, HMBC, and NOESY), IR spectrum, circular dichroism spectrum (CD), and high-resolution electrospray ionization-mass spectrometry (HR-ESI-MS). All isolated compounds were evaluated for their cytotoxic activities against Leishmania major, Plasmodium falciparum, Trypanosoma brucei (gambiense and rhodesiense), and human lung cancer cell line A549 because of the high demand for the discovery of new drug leads to overcome the present side effects and emerging drug-resistant strains. As a result, the new compounds (1 and 2) showed significant activities against A549 (IC50, 1: 3.3 ± 0.3; 2: 12.3 ± 1.0 μg/mL), L. major (IC50, 1: 6.9 ± 0.6; 2: 24.9 ± 2.2 μg/mL), and P. falciparum (IC50, 1: 12.1 ± 1.1; 2: 15.6 ± 1.2 μg/mL).
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Affiliation(s)
- Zhichao Wang
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Ben-Yeddy Abel Chitama
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
| | - Keisuke Suganuma
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro 080-8555, Japan
| | - Yoshi Yamano
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Sachiko Sugimoto
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Susumu Kawakami
- Graduate School of Pharmacy, Yasuda Women's University, Hiroshima 731-0153, Japan
| | - Osamu Kaneko
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
| | - Hideaki Otsuka
- Graduate School of Pharmacy, Yasuda Women's University, Hiroshima 731-0153, Japan
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
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Michaels P, Kung F, Nguyen S, Slover C, Shortridge D, Streit J, Echols R, Takemura M, Yamano Y. 461 In vitro antibacterial activity of cefiderocol against a multinational collection of Pseudomonas aeruginosa isolates from people with cystic fibrosis: SENTRY 2020–2021. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01151-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Yamano Y, Rakotondraibe HL. Understanding the Biosynthesis of Paxisterol in Lichen-Derived Penicillium aurantiacobrunneum for Production of Fluorinated Derivatives. Molecules 2022; 27:molecules27051641. [PMID: 35268742 PMCID: PMC8911623 DOI: 10.3390/molecules27051641] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/23/2022] [Accepted: 02/28/2022] [Indexed: 11/16/2022] Open
Abstract
The U.S. endemic lichen (Niebla homalea)-derived Penicillium aurantiacobrunneum produced a cytotoxic paxisterol derivative named auransterol (2) and epi-citreoviridin (6). Feeding assay using 13C1-labelled sodium acetate not only produced C-13-labelled paxisterol but also confirmed the biosynthetic origin of the compound. The fluorination of bioactive compounds is known to improve pharmacological and pharmacokinetic effects. Our attempt to incorporate the fluorine atom in paxisterol and its derivatives using the fluorinated precursor sodium monofluoroacetate resulted in the isolation of 7-monofluoroacetyl paxisterol (7). The performed culture experiment, as well as the isolation and structure elucidation of the new fluorinated paxisterol, is discussed herein.
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Affiliation(s)
- Yoshi Yamano
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA;
- Graduate School of Biomedical and Health Sciences, Pharmaceutical Sciences, Hiroshima University, Hiroshima 739-8527, Japan
| | - Harinantenaina L. Rakotondraibe
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA;
- Infectious Diseases Institute, The Ohio State University, Columbus, OH 43210, USA
- Center for Applied Plant Sciences, The Ohio State University, Columbus, OH 43210, USA
- Correspondence: ; Tel.: +1-614-292-4733
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Buncherd H, Kaewsrichan J, Saechan C, Hoang Nguyen U, Wang Z, Sugimoto S, Yamano Y, Thanapongpichat S, Matsunami K, Otsuka H, Minh Phan G, Hung Pham V, Nokchan N, Svasti J. Antimicrobial Activities of Heliciopsis terminalis Trunk Extract. HETEROCYCLES 2022. [DOI: 10.3987/com-22-14719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kinoshita-Kikuta E, Ichimaru Y, Yamano Y, Kato K, Kurosaki H, Kinoshita E, Koike T. Characterization of the Binding of Adenosine-5′-monophosphate to a µ-Type Alkoxide-Linked Dinuclear Zinc(II) Complex in Crystal and Solution State. BCSJ 2021. [DOI: 10.1246/bcsj.20210280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Emiko Kinoshita-Kikuta
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Yoshimi Ichimaru
- Department of Clinical Pharmacy, Shonan University of Medical Sciences, 16-48 Kamishinano, Totsuka-ku, Yokohama, Kanagawa 224-0806, Japan
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyama-ku, Nagoya, Aichi 463-8521, Japan
| | - Yoshi Yamano
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Koichi Kato
- Department of Clinical Pharmacy, Shonan University of Medical Sciences, 16-48 Kamishinano, Totsuka-ku, Yokohama, Kanagawa 224-0806, Japan
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyama-ku, Nagoya, Aichi 463-8521, Japan
| | - Hiromasa Kurosaki
- College of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyama-ku, Nagoya, Aichi 463-8521, Japan
| | - Eiji Kinoshita
- Faculty of Human Sciences, Hiroshima Bunkyo University, 1-2-1 Kabehigashi, Asakita-ku, Hiroshima 731-0295, Japan
| | - Tohru Koike
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
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Saechan C, Nguyen UH, Wang Z, Sugimoto S, Yamano Y, Matsunami K, Otsuka H, Phan GM, Pham VH, Tipmanee V, Kaewsrichan J. Potency of bisresorcinol from Heliciopsis terminalis on skin aging: in vitro bioactivities and molecular interactions. PeerJ 2021; 9:e11618. [PMID: 34221723 PMCID: PMC8231342 DOI: 10.7717/peerj.11618] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/25/2021] [Indexed: 12/18/2022] Open
Abstract
Background A bisresorcinol was isolated as the main constituent of Heliciopsis terminalis’s trunk (Proteaceae). Recently, resorcinol is applied as an active whitening agent in various cosmetic products. Because of the structural mimic to resorcinol, benefits of the bisresorcinol as an aging-enzyme antagonist were demonstrated in this study. Methods The bisresorcinol was purified from the crude ethanolic extract of H. terminalis’s trunk by solvent extraction and preparative chromatography, respectively. Inhibitory activity on collagenase, elastase, and tyrosinase of the compound was investigated by using a different spectroscopic technique. Molecular docking was carried out to predict possible interactions of the substance around the enzyme active sites. Results The IC50 values on collagenase of the bisresorcinol and caffeic acid were 156.7 ± 0.7 and 308.9 ± 1.6 µmole L−1, respectively. For elastase activity, the IC50 of 33.2 ± 0.5 and 34.3 ± 0.3 µmole L−1 was respectively determined for the bisresorcinol and ursolic acid. The bisresorcinol was inhibitory to tyrosinase by exhibiting the IC50 of 22.8 µmole L−1, and that of 78.4 µmole L−1 was present for β-arbutin. The bisresorcinol bound to collagenase, elastase, and tyrosinase with the respective binding energies of −5.89, −5.69, and −6.57 kcal mol−1. These binding energies were in the same ranges of tested inhibitors. The aromatic phenol groups in the structure were responsible for principle as well as supporting binding interactions with enzymes. Hydrogen binding due to hydroxyl groups and π-related attractive forces from an aromatic ring(s) provided binding versatility to bisresorcinol. Conclusion The bisresorcinol purified from H. terminalis might be useful for inclusion in cosmetic products as an aging-enzyme antagonist.
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Affiliation(s)
- Charinrat Saechan
- Department of Pharmaceutical Chemistry and Drug Delivery System Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Uyen Hoang Nguyen
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Zhichao Wang
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Sachiko Sugimoto
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoshi Yamano
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hideaki Otsuka
- Faculty of Pharmacy, Yasuda Women's University, Hiroshima, Japan
| | - Giang Minh Phan
- Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Viet Hung Pham
- Research Center for Environmental Technology and Sustainable Development, VNU University of Science, Vietnam National University, Hanoi, Vietnam
| | - Varomyalin Tipmanee
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Jasadee Kaewsrichan
- Department of Pharmaceutical Chemistry and Drug Delivery System Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
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Sulistyowaty MI, Uyen NH, Suganuma K, Chitama BYA, Yahata K, Kaneko O, Sugimoto S, Yamano Y, Kawakami S, Otsuka H, Matsunami K. Six New Phenylpropanoid Derivatives from Chemically Converted Extract of Alpinia galanga (L.) and Their Antiparasitic Activities. Molecules 2021; 26:1756. [PMID: 33801067 PMCID: PMC8004034 DOI: 10.3390/molecules26061756] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 01/22/2023] Open
Abstract
Chemical conversion of the extract of natural resources is a very attractive way to expand the chemical space to discover bioactive compounds. In order to search for new medicines to treat parasitic diseases that cause high morbidity and mortality in affected countries in the world, the ethyl acetate extract from the rhizome of Alpinia galanga (L.) has been chemically converted by epoxidation using dioxirane generated in situ. The biological activity of chemically converted extract (CCE) of A. galanga (L.) significantly increased the activity against Leishmania major up to 82.6 ± 6.2 % at 25 μg/mL (whereas 2.7 ± 0.8% for the original extract). By bioassay-guided fractionation, new phenylpropanoids (1-6) and four known compounds, hydroquinone (7), 4-hydroxy(4-hydroxyphenyl)methoxy)benzaldehyde (8), isocoumarin cis 4-hydroxymelein (9), and (2S,3S,6R,7R,9S,10S)-humulene triepoxide (10) were isolated from CCE. The structures of isolated compounds were determined by spectroscopic analyses of 1D and 2D NMR, IR, and MS spectra. The most active compound was hydroquinone (7) with IC50 = 0.37 ± 1.37 μg/mL as a substantial active principle of CCE. In addition, the new phenylpropanoid 2 (IC50 = 27.8 ± 0.34 μg/mL) also showed significant activity against L. major compared to the positive control miltefosine (IC50 = 7.47 ± 0.3 μg/mL). The activities of the isolated compounds were also evaluated against Plasmodium falciparum, Trypanosoma brucei gambisense and Trypanosoma brucei rhodeisense. Interestingly, compound 2 was selectively active against trypanosomes with potent activity. To the best of our knowledge, this is the first report on the bioactive "unnatural" natural products from the crude extract of A. galanga (L.) by chemical conversion and on its activities against causal pathogens of leishmaniasis, trypanosomiasis, and malaria.
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Affiliation(s)
- Melanny Ika Sulistyowaty
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
- Faculty of Pharmacy, Universitas Airlangga, Surabaya 60286, Indonesia
| | - Nguyen Hoang Uyen
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
| | - Keisuke Suganuma
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada, Obihiro 080-8555, Hokkaido, Japan;
| | - Ben-Yeddy Abel Chitama
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan; (B.-Y.A.C.); (K.Y.); (O.K.)
| | - Kazuhide Yahata
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan; (B.-Y.A.C.); (K.Y.); (O.K.)
| | - Osamu Kaneko
- Department of Protozoology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan; (B.-Y.A.C.); (K.Y.); (O.K.)
| | - Sachiko Sugimoto
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
| | - Yoshi Yamano
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
| | - Susumu Kawakami
- Department of Natural Products Chemistry, Faculty of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima 731-0153, Japan; (S.K.); (H.O.)
| | - Hideaki Otsuka
- Department of Natural Products Chemistry, Faculty of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima 731-0153, Japan; (S.K.); (H.O.)
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (M.I.S.); (N.H.U.); (S.S.); (Y.Y.)
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Sagara T, Sugimoto S, Yamano Y, Nehira T, Masuda K, Otsuka H, Matsunami K. Isolation of Three New Diterpenes from Dodonaea viscosa. Chem Pharm Bull (Tokyo) 2021; 69:40-47. [PMID: 33390520 DOI: 10.1248/cpb.c20-00327] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An investigation into the methanol extracts obtained from the stems of Dodonaea viscosa led to the isolation of one nor-clerodane diterpene (1) and two labdane diterpenes (2, 3), as well as 17 known compounds (4-20). The structures of these compounds were elucidated based on chemical and spectral evidence. The stereochemical structure of the nor-clerodane diterpene was confirmed via its circular dichroism spectrum and calculated electronic circular dichroism spectrum. Isolated compounds were evaluated for their inhibitory effects on collagenase and tyrosinase. Since 5,7,4'-trihydroxy-3'-(4-hydroxy-3-methylbutyl)-5'-(3-methylbut-2-enyl)-3,6-dimethoxyflavone (9) showed collagenase inhibitory activity and scopoletin (12) had significant tyrosinase inhibitory activity, they were considered to be good candidates for cosmetic agents.
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Affiliation(s)
- Toshinori Sagara
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Sachiko Sugimoto
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Yoshi Yamano
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Tatsuo Nehira
- Graduate School of Integrated Arts and Sciences, Hiroshima University
| | - Kazuma Masuda
- Graduate School of Integrated Arts and Sciences, Hiroshima University
| | - Hideaki Otsuka
- Department of Natural Products Chemistry, Faculty of Pharmacy, Yasuda Women's University
| | - Katsuyoshi Matsunami
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University
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Uyen NH, Widyowati R, Sulistyowaty MI, Sugimoto S, Yamano Y, Kawakami S, Otsuka H, Matsunami K. Firmosides A and B: two new sucrose ferulates from the aerial parts of Silene firma and evaluation of radical scavenging activities. J Nat Med 2020; 74:796-803. [PMID: 32632912 DOI: 10.1007/s11418-020-01426-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 06/23/2020] [Indexed: 11/24/2022]
Abstract
Two new tri-ferulates of sucrose, firmosides A and B (1 and 2, respectively), together with 18 known compounds (3-20), were isolated from the aerial parts of Silene firma. The structures of the isolated compounds were elucidated by various spectroscopic methods, including 1D, 2D NMR, and high-resolution electro-spray ionization-mass spectrometry (HR-ESI-MS). All the isolated compounds were evaluated for their free radical scavenging activity using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. As a result, two new compounds (1, 2) and 11 demonstrated significant radical scavenging activity, implying the usefulness as antioxidant agents.
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Affiliation(s)
- Nguyen Hoang Uyen
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Retno Widyowati
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.,Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Universitas Airlangga, Gedung Nanizar Zaman Joenoes, Kampus C Unair, Surabaya, 60115, Indonesia
| | - Melanny Ika Sulistyowaty
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Airlangga, Gedung Nanizar Zaman Joenoes, Kampus C Unair, Surabaya, 60115, Indonesia
| | - Sachiko Sugimoto
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Yoshi Yamano
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Susumu Kawakami
- Faculty of Pharmacy, Yasuda Women's University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima, 731-0153, Japan
| | - Hideaki Otsuka
- Faculty of Pharmacy, Yasuda Women's University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima, 731-0153, Japan
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.
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Al-Hamoud GA, Orfali RS, Takeda Y, Sugimoto S, Yamano Y, Al Musayeib NM, Fantoukh OI, Amina M, Otsuka H, Matsunami K. Lasianosides F-I: A New Iridoid and Three New Bis-Iridoid Glycosides from the Leaves of Lasianthus verticillatus (Lour.) Merr. Molecules 2020; 25:molecules25122798. [PMID: 32560479 PMCID: PMC7356845 DOI: 10.3390/molecules25122798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/13/2020] [Accepted: 06/15/2020] [Indexed: 11/24/2022] Open
Abstract
A series of iridoid glycosides were isolated from the leaves of Lasianthus verticillatus (Lour.) Merr., belonging to family Rubiaceae. A new iridoid glycoside, lasianoside F (1), and three new bis-iridoid glycosides, lasianosides G–I (2–4), together with four known compounds (5–8) were isolated. The structures were established by spectroscopic methods, including 1D and 2D NMR experiments (1H, 13C, DEPT, COSY, HSQC, HMBC, and NOESY) in combination with HR-ESI-MS and CD spectra.
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Affiliation(s)
- Gadah Abdulaziz Al-Hamoud
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia; (G.A.A.-H.); (R.S.O.); (N.M.A.M.); (O.I.F.); (M.A.)
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (S.S.); (Y.Y.)
| | - Raha Saud Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia; (G.A.A.-H.); (R.S.O.); (N.M.A.M.); (O.I.F.); (M.A.)
| | - Yoshio Takeda
- Faculty of Integrated Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjima-Cho, Tokushima 770-8502, Japan;
| | - Sachiko Sugimoto
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (S.S.); (Y.Y.)
| | - Yoshi Yamano
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (S.S.); (Y.Y.)
| | - Nawal M. Al Musayeib
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia; (G.A.A.-H.); (R.S.O.); (N.M.A.M.); (O.I.F.); (M.A.)
| | - Omer Ibrahim Fantoukh
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia; (G.A.A.-H.); (R.S.O.); (N.M.A.M.); (O.I.F.); (M.A.)
| | - Musarat Amina
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia; (G.A.A.-H.); (R.S.O.); (N.M.A.M.); (O.I.F.); (M.A.)
| | - Hideaki Otsuka
- Faculty of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima 731-0153, Japan;
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (S.S.); (Y.Y.)
- Correspondence: ; Tel.: +81-82-257-5335
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Nakajima T, Yoshifuji H, Yamano Y, Handa H, Ohmura K, Mimori T, Terao C. THU0023 DETAILED PROFILE OF CO-OCCURRENCE OF RELAPSING POLYCHONDRITIS AND AUTOIMMUNE THYROID DISEASE. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Relapsing polychondritis (RP) is a rare inflammatory disease, which is characterized by recurrent inflammation and destruction of cartilage tissues. RP also has the profile of autoimmune disease and is often complicated with other autoimmune disease. Autoimmune thyroid disease (AITD) is one of common autoimmune diseases, which consists of Graves’ disease (GD) and Hashimoto’s thyroiditis (HT). While RP is reported to be complicated with AITD1), there has been no study on detailed profile of co-occurrence of RP and AITD.Objectives:We aimed to reveal whether there is common (statistically significant) co-occurrence of RP and AITD. We also analyzed clinical and genetic profiles characterizing the co-occurrence.Methods:We recruited 117 patients with RP and checked their medical records in order to obtain the information about compilation of AITD and clinical features. In addition, we genotyped Human Leucocyte Antigen (HLA) A, B Cw, DRB1, DQB1 and DPB1 alleles for 88 of the 117 patients. Co-occurrence ratio was compared with prevalence of AITD in the Japanese population. Associations of co-occurrence of AITD with clinical manifestations or HLA alleles were analyzed among the patients.Results:Among the 117 patients with RP, 5 (4.3%) and 6 (5.1%) patients had GD and HT, respectively. Patients with RP were more likely to be complicated with GD (p=1.04×10-3, OR: 7.15, 95%CI 2.68~ 18.14) but not with HT (p=0.50, 95%CI 0.59~1.27), compared with prevalence in general Japanese population (0.62% and 5.9%, respectively2)). RP patients with GD showed a trend to have nasal involvement (100% vs 45.5%, p=0.023, OR: 2.58, 95%CI 1.09~∞). We did not observe any differences in clinical manifestation in patients with RP and HT. HLA- DPB1*02:02 demonstrated a trend toward GD complication (20% vs 2.3%, p=0.035, OR: 10.41, 95%CI 1.23~65.38). There were no association of HLA in the complication of HT among patients with RP.Conclusion:Patients with RP have high co-occurrence ratio of GD. Patients with the two diseases may be characterized by nasal involvement and HLA-DPB1*02:02.References:[1]Kung AW et al. Graves’ ophthalmopathy and relapsing polychondritis. Clin Exp Rheumatol. 1995 Jul-Aug;13(4):501-3.[2]Nagataki S et al. Thyroid diseases among atomic bomb survivors in Nagasaki. JAMA. 1994 Aug 3;272(5):364-70.Disclosure of Interests:Toshiki Nakajima Speakers bureau: Bristol-Myers Squibb and Novartis, Hajime Yoshifuji Grant/research support from: Astellas Pharma. (Outside the field of the present study.), Speakers bureau: Chugai Pharmaceutical. (Outside the field of the present study.), Yoshihisa Yamano: None declared, Hiroshi Handa: None declared, Koichiro Ohmura Grant/research support from: Astellas Pharma, AYUMI Pharmaceutical, Chugai Pharmaceutical, Daiichi Sankyo, Eisai, Japan Blood Products Organization, Mitsubishi Tanabe Pharma, Nippon Kayaku, Nippon Shinyaku, Sanofi, and Takeda Pharmaceutical., Speakers bureau: AbbVie, Actelion Pharmaceuticals Japan, Asahi Kasei Pharma, AYUMI Pharmaceutical, Bristol-Myers Squibb, Chugai Pharmaceutical, Eisai, Eli Lilly and Company, GlaxoSmithKline, Janssen Pharmaceutical, Mitsubishi Tanabe Pharma, Novartis Pharma, and Sanofi., Tsuneyo Mimori: None declared, Chikashi Terao Grant/research support from: Actelion, Speakers bureau: Asteras, Asahi Kasei Pharma, Ono and Tanabe-Mitsubishi
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Al-Hamoud GA, Saud Orfali R, Perveen S, Mizuno K, Takeda Y, Nehira T, Masuda K, Sugimoto S, Yamano Y, Otsuka H, Matsunami K. Lasianosides A-E: New Iridoid Glucosides from the Leaves of Lasianthus verticillatus (Lour.) Merr. and Their Antioxidant Activity. Molecules 2019; 24:molecules24213995. [PMID: 31694179 PMCID: PMC6864479 DOI: 10.3390/molecules24213995] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 10/29/2019] [Accepted: 11/03/2019] [Indexed: 11/18/2022] Open
Abstract
The genus Lasianthus (Rubiaceae) consists of approximately 180 species, of which the greatest species diversity is found in tropical Asia. Some of the Lasianthus species have been used in folk medicine to treat tinnitus, arthritis, fever, and bleeding. Lasianthus verticillatus (Lour.) Merr. (Syn. Lasianthus trichophlebus auct. non Hemsl.) is a shrub, branchlets terete about 1.5–3 m in height. This paper studies the chemical composition of the leaves of L. verticillatus for the first time, which resulted in the isolation of five undescribed iridoid glucosides, lasianosides A–E (1–5), together with three known compounds (6–8). The undescribed structures of isolated compounds (1–5) were characterized by physical and spectroscopic data analyses, including one-dimensional (1D) and two-dimensional (2D) NMR, IR, UV, and high-resolution electrospray ionization mass spectra (HR-ESI-MS). Furthermore, the electronic circular dichroism data determined the absolute configurations of the new compounds. The free radical scavenging properties of isolated compounds was assessed by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay, and their cytotoxicity was assessed toward human lung cancer cell line A549 by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method. Among the isolated compounds, 3 and 4 displayed potent radical scavenging activities with IC50 values of 30.2 ± 1.8 and 32.0 ± 1.2 µM, which were comparable to that of Trolox (29.2 ± 0.39 µM), respectively, while 5 possessed moderate activity with an IC50 value of 46.4 ± 2.3 µM. None of the isolated compounds exerted cytotoxicity against human cell line A549. As a result, lasianosides C, D, and E have the potential to be non-toxic safe antioxidant agents.
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Affiliation(s)
- Gadah Abdulaziz Al-Hamoud
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (G.A.A.-H.); (S.S.); (Y.Y.); (H.O.)
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia;
| | - Raha Saud Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia;
- Correspondence: (R.S.O.); (K.M.); Tel.: +966-11-8055014 (R.S.O.); +81-82-257-5335 (K.M.)
| | - Shagufta Perveen
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11495, Saudi Arabia;
| | - Kenta Mizuno
- Faculty of Integrated Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjima-Cho, Tokushima 770-8502, Japan; (K.M.); (Y.T.)
| | - Yoshio Takeda
- Faculty of Integrated Arts and Sciences, The University of Tokushima, 1-1 Minamijosanjima-Cho, Tokushima 770-8502, Japan; (K.M.); (Y.T.)
| | - Tatsuo Nehira
- Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan; (T.N.); (K.M.)
| | - Kazuma Masuda
- Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima 739-8521, Japan; (T.N.); (K.M.)
| | - Sachiko Sugimoto
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (G.A.A.-H.); (S.S.); (Y.Y.); (H.O.)
| | - Yoshi Yamano
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (G.A.A.-H.); (S.S.); (Y.Y.); (H.O.)
| | - Hideaki Otsuka
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (G.A.A.-H.); (S.S.); (Y.Y.); (H.O.)
- Faculty of Pharmacy, Yasuda Women’s University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima 731-0153, Japan
| | - Katsuyoshi Matsunami
- Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; (G.A.A.-H.); (S.S.); (Y.Y.); (H.O.)
- Correspondence: (R.S.O.); (K.M.); Tel.: +966-11-8055014 (R.S.O.); +81-82-257-5335 (K.M.)
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Oi H, Yamano Y, Yokoyama T, Matsuda T, Morise M, Kataoka K, Kimura T, Kondoh Y. Weekly nab-PTX and weekly PTX for relapsed small cell lung cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz437.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Tamaki K, Sato T, Tsugawa J, Fujioka S, Yagishita N, Araya N, Yamauchi J, Nagasaka M, Tsutsumi S, Yamano Y, Tsuboi Y. Cerebrospinal fluid CXCL10 as a surrogate marker of therapy-response and therapy-predict for HTLV-1-Associated myelopathy/tropical spastic paraparesis. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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HASHIMOTO S, Yamano Y, Tomokazu M, Hidehito Y. SAT-057 Fundamental study of arteriovenous fistula blood flow using transit time flow measurement. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Sugimoto S, Yamano Y, Desoukey SY, Katakawa K, Wanas AS, Otsuka H, Matsunami K. Isolation of Sesquiterpene-Amino Acid Conjugates, Onopornoids A-D, and a Flavonoid Glucoside from Onopordum alexandrinum. J Nat Prod 2019; 82:1471-1477. [PMID: 31199638 DOI: 10.1021/acs.jnatprod.8b00948] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Previous phytochemical investigations have revealed the presence of a variety of compounds such as pyrrolidine derivatives, flavonoids, and megastigmanes in Egyptian plants. Onopordum alexandrinum has been traditionally used by the natives for treatment of skin cancers and leprosy. In this paper the isolation of four new sesquiterpene-amino acid conjugates, onopornoids A-D (1-4), i.e., three elemanes and one germacrane, and a new acylated flavonoid glucoside (5) along with nine known compounds (6-14) from the whole aerial parts of the title plant is discussed. The structures were elucidated based on chemical and spectroscopic/spectrometric data.
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Affiliation(s)
- Sachiko Sugimoto
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences , Hiroshima University , 1-2-3 Kasumi , Minami-ku, Hiroshima 734-8553 , Japan
| | - Yoshi Yamano
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences , Hiroshima University , 1-2-3 Kasumi , Minami-ku, Hiroshima 734-8553 , Japan
| | - Samar Y Desoukey
- Department of Pharmacognosy, Faculty of Pharmacy , Minia University , Minia 61519 , Egypt
| | - Kazuaki Katakawa
- Department of Pharmaceutical Sciences, Faculty of Pharmacy , Musashino University , 11-1-20 Shinmachi Nishitokyo-shi , Tokyo 202-8585 , Japan
| | - Amira S Wanas
- Department of Pharmacognosy, Faculty of Pharmacy , Minia University , Minia 61519 , Egypt
- National Center for Natural Products Research, University of Mississippi , University , Mississippi 38677 , United States
| | - Hideaki Otsuka
- Department of Natural Products Chemistry, Faculty of Pharmacy , Yasuda Women's University , 6-13-1 Yasuhigashi , Asaminami-ku, Hiroshima 731-0153 , Japan
| | - Katsuyoshi Matsunami
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences , Hiroshima University , 1-2-3 Kasumi , Minami-ku, Hiroshima 734-8553 , Japan
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Abdulaziz Al-Hamoud G, Saud Orfali R, Sugimoto S, Yamano Y, Alothyqi N, Mohammed Alzahrani A, Matsunami K. Four New Flavonoids Isolated from the Aerial Parts of Cadaba rotundifolia Forssk. (Qadab). Molecules 2019; 24:molecules24112167. [PMID: 31181831 PMCID: PMC6600330 DOI: 10.3390/molecules24112167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 06/05/2019] [Accepted: 06/06/2019] [Indexed: 11/22/2022] Open
Abstract
Cadaba rotundifolia (Forssk.) (family: Capparaceae; common name: Qadab) is one of four species that grow in the Red Sea costal region in the Kingdom of Saudi Arabia. The roots and leaves of C. rotundifolia is traditionally used to treat tumors and abscesses in Sudan. A previous phytochemical study of the roots yielded a quaternary alkaloid, but no report on chemical constituents of the aerial parts of the C. rotundifolia growing in Saudi Arabia has been issued so far. Oxidative stress and advanced glycation end products (AGEs) are thought as causal factors in many degenerative diseases, such as Alzheimer’s disease, diabetes, atherosclerosis and aging. In this study, a total of twenty compounds, including four previously undescribed acylated kaempferol glucosides, were isolated from the aerial parts of C. rotundifolia collected in Saudi Arabia. These new compounds were identified as kaempferol 3-O-[2-O-(trans-feruloyl)-3-O-β-d-glucopyranosyl]-β-d-glucopyranoside (1), kaempferol 3-O-β-neohesperidoside-7-O-[2-O-(cis-p-coumaroyl)-3-O-β-d-glucopyranosyl]-β-d-glucopyranoside (2), kaempferol 3-O-[2,6-di-O-α-l-rhamnopyranosyl]-β-d-glucopyranoside-7-O-[6-O-(trans-feruloyl)]-β-d-glucopyranoside (3) and kaempferol 3-O-[2,6-di-O-α-l-rhamnopyranosyl]-β-d-glucopyranoside-7-O-[6-O-(trans-p-coumaroyl)]-β-d-glucopyranoside (4). Their structures were established based on UV-visible, 1D, 2D NMR, and HR-ESI-MS analyses. Of the assayed compounds, 17 and 18 showed potent radical scavenging activity with IC50 values of 14.5 and 11.7 µM, respectively, and inhibitory activity toward AGEs together with compound 7 with IC50 values 96.5, 34.9 and 85.5 µM, respectively.
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Affiliation(s)
- Gadah Abdulaziz Al-Hamoud
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
- Department of Pharmacognosy, College of Pharmacy, King Saud University, 11495 Riyadh, Saudi Arabia.
| | - Raha Saud Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University, 11495 Riyadh, Saudi Arabia.
| | - Sachiko Sugimoto
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
| | - Yoshi Yamano
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
| | - Nafee Alothyqi
- Department of Biology, Umm Al-Qura University, 1109 Makkah Al-Mukarramah, Saudi Arabia.
| | - Ali Mohammed Alzahrani
- Department of Biology, Arts and Sciences in Qilwah, Al-Baha University, 1988 Al-Baha, Saudi Arabia.
| | - Katsuyoshi Matsunami
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
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Sasaki A, Yamano Y, Sugimoto S, Otsuka H, Matsunami K, Shinzato T. Phenolic compounds from the leaves of Breynia officinalis and their tyrosinase and melanogenesis inhibitory activities. J Nat Med 2017; 72:381-389. [PMID: 29264846 DOI: 10.1007/s11418-017-1148-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 10/27/2017] [Indexed: 10/18/2022]
Abstract
From the EtOAc-soluble fraction of a MeOH extract of the leaves of Breynia officinalis, five new compounds (1-5) along with 11 known compounds (6-16) were isolated. The structures of the new compounds were elucidated by spectroscopic methods and compounds 1-3 were found to be acylated hydroquinone apiofuranosylglucopyranosides, while compound 4 was an acylated hydroquinone glucopyranoside. Compound 5 was shown to be butyl p-coumarate and this seems to be its first isolation from a natural source. The tyrosinase inhibitory activity of all of the isolated compounds was assayed, and the activity was significant in p-coumarate derivatives. The most active compound, compound 3, also inhibited melanogenesis in an in vivo whole animal model, zebrafish.
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Affiliation(s)
- Ayano Sasaki
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Yoshi Yamano
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Sachiko Sugimoto
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Hideaki Otsuka
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan. .,Department of Natural Products Chemistry, Faculty of Pharmacy, Yasuda Women's University, 6-13-1 Yasuhigashi, Asaminami-ku, Hiroshima, 731-0153, Japan.
| | - Katsuyoshi Matsunami
- Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.
| | - Takakazu Shinzato
- Subtropical Field Science Center, Faculty of Agriculture, University of the Ryukyus, 685 Aza Yona, Kunigami-son, Kunigami-Gun, 905-1427, Okinawa, Japan
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Yamano Y, Sato T, Coler-Reilly A, Yagishita N, Araya N, Inoue E, Furuta R, Watanabe T, Uchimaru K, Matsuoka M, Matsumoto N, Hasegawa Y. Phase 1/2a study of Mogamulizumab, an anti-CCR4 monoclonal antibody, in patients with HTLV-1-associated myelopathy (HAM/TSP). J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sugimoto S, Yamano Y, Khalil HE, Otsuka H, Kamel MS, Matsunami K. Chemical structures of constituents from the leaves of Polyscias balfouriana. J Nat Med 2017; 71:558-563. [DOI: 10.1007/s11418-017-1081-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 02/15/2017] [Indexed: 11/28/2022]
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Minami M, Katsumata M, Miyake K, Inagaki H, Fan XH, Kubota H, Yamano Y, Kimura O. Dangerous Mixture of Household Detergents in an Old-style Toilet: a Case Report with Simulation Experiments of the Working Environment and Warning of Potential Hazard Relevant to the General Environment. Hum Exp Toxicol 2016; 11:27-34. [PMID: 1354456 DOI: 10.1177/096032719201100104] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A housewife cleaned toilet porcelain connected directly to a sewage storage tank with a mixture of cleaning agents; sodium hypochlorite (NaOCl) and hydrochloric acid (HCl) solutions. She complained of insomnia on the night after cleaning and suffered from severe metabolic acidosis with extremely low blood pH, PCO2 and bicarbonate values. She recovered from the acidosis after bicarbonate transfusion, plasmapheresis and plasma exchange. Permanent blindness ensued, however, from the third day after the event. These clinical symptoms suggested that the toxic substances responsible were chloramine and methyl chloride. Their generation was confirmed by in-vitro experiments, mixing NaOCl, HCl and pooled urine from normal people. In the simulation, the methyl chloride level far exceeded (100 000 ppm) the maximal allowable concentration recommended (ca 400 ppm) by the American Conference of Governmental Industrial Hygienists (ACGIH). Chloramine's toxic actions were confirmed using purified enzyme assay, and the inhibition of carbonic anhydrase and aldehyde dehydrogenase and the enhancement of superoxide dismutase activity were confirmed in neutral pH. The patient's clinical symptoms suggested that insomnia and permanent blindness seemed to be partly ascribable to chronic repetitive exposure to methyl chloride; catching a cold, drug intake and alcohol intake, in addition, precipitated the patient's visual loss. The possibility of this kind of intoxication with such a mixture of agents may lie latent in any situation where sewage or garbage are exposed to the open air.
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Affiliation(s)
- M Minami
- Department of Hygiene and Public Health, Nippon Medical School, Tokyo, Japan
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Hanada M, Kojima A, Tobari H, Nishikiori R, Hiratsuka J, Kashiwagi M, Umeda N, Yoshida M, Ichikawa M, Watanabe K, Yamano Y, Grisham LR. Development of the negative ion beams relevant to ITER and JT-60SA at Japan Atomic Energy Agency. Rev Sci Instrum 2016; 87:02B322. [PMID: 26932050 DOI: 10.1063/1.4934584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In order to realize negative ion sources and accelerators to be applicable to International Thermonuclear Experimental Reactor and JT-60 Super Advanced, a large cesium (Cs)-seeded negative ion source and a multi-aperture and multi-stage electric acceleration have been developed at Japan Atomic Energy Agency (JAEA). Long pulse production and acceleration of the negative ion beams have been independently carried out. The long pulse production of the high current beams has achieved 100 s at the beam current of 15 A by modifying the JT-60 negative ion source. The pulse duration time is increased three times longer than that before the modification. As for the acceleration, a pulse duration time has been also extended two orders of magnitudes from 0.4 s to 60 s. The developments of the negative ion source and acceleration at JAEA are well in progress towards the realization of the negative ion sources and accelerators for fusion applications.
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Affiliation(s)
- M Hanada
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - A Kojima
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - H Tobari
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - R Nishikiori
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - J Hiratsuka
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - M Kashiwagi
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - N Umeda
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - M Yoshida
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - M Ichikawa
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - K Watanabe
- Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki-ken 319-0913, Japan
| | - Y Yamano
- Saitama University, Saitama, Saitama-ken 338-8570, Japan
| | - L R Grisham
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
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Kojima A, Hanada M, Tobari H, Nishikiori R, Hiratsuka J, Kashiwagi M, Umeda N, Yoshida M, Ichikawa M, Watanabe K, Yamano Y, Grisham LR. Development of design technique for vacuum insulation in large size multi-aperture multi-grid accelerator for nuclear fusion. Rev Sci Instrum 2016; 87:02B304. [PMID: 26932032 DOI: 10.1063/1.4931803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Design techniques for the vacuum insulation have been developed in order to realize a reliable voltage holding capability of multi-aperture multi-grid (MAMuG) accelerators for fusion application. In this method, the nested multi-stage configuration of the MAMuG accelerator can be uniquely designed to satisfy the target voltage within given boundary conditions. The evaluation of the voltage holding capabilities of each acceleration stages was based on the previous experimental results about the area effect and the multi-aperture effect. Since the multi-grid effect was found to be the extension of the area effect by the total facing area this time, the total voltage holding capability of the multi-stage can be estimated from that per single stage by assuming the stage with the highest electric field, the total facing area, and the total apertures. By applying these consideration, the analysis on the 3-stage MAMuG accelerator for JT-60SA agreed well with the past gap-scan experiments with an accuracy of less than 10% variation, which demonstrated the high reliability to design MAMuG accelerators and also multi-stage high voltage bushings.
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Affiliation(s)
- A Kojima
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - M Hanada
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - H Tobari
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - R Nishikiori
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - J Hiratsuka
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - M Kashiwagi
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - N Umeda
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - M Yoshida
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - M Ichikawa
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - K Watanabe
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
| | - Y Yamano
- Saitama University, Saitama, Saitama-ken 338-8570, Japan
| | - L R Grisham
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
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Widyowati R, Sugimoto S, Yamano Y, Sukardiman, Otsuka H, Matsunami K. New Isolinariins C, D and E, Flavonoid Glycosides from Linaria japonica. Chem Pharm Bull (Tokyo) 2016; 64:517-21. [DOI: 10.1248/cpb.c16-00073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Retno Widyowati
- Graduate School of Biomedical & Health Sciences, Hiroshima University
- Faculty of Pharmacy, Airlangga University
| | - Sachiko Sugimoto
- Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Yoshi Yamano
- Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Sukardiman
- Faculty of Pharmacy, Airlangga University
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Arai M, Han C, Yamano Y, Setiawan A, Kobayashi M. Aaptamines, marine spongean alkaloids, as anti-dormant mycobacterial substances. J Nat Med 2014; 68:372-6. [PMID: 24414399 DOI: 10.1007/s11418-013-0811-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Accepted: 12/16/2013] [Indexed: 10/25/2022]
Abstract
A new aaptamine class alkaloid, designated 2-methoxy-3-oxoaaptamine (1), together with seven known aaptamines (2-8) were isolated from a marine sponge of Aaptos sp. as anti-mycobacterial substances against active and dormant bacilli. The chemical structure of 1 was determined on the basis of spectroscopic analysis. Compound 1 was anti-mycobacterial against Mycobacterium smegmatis in both active growing and dormancy-inducing hypoxic conditions with a minimum inhibitory concentration (MIC) of 6.25 μg/ml, and compounds 2, 5, 6, and 7 showed anti-mycobacterial activities under hypoxic condition selectively, with MIC values of 1.5-6.25 μg/ml.
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Affiliation(s)
- Masayoshi Arai
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamada-oka 1-6, Suita, Osaka, 565-0871, Japan,
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Arai M, Yamano Y, Setiawan A, Kobayashi M. Identification of the Target Protein of Agelasine D, a Marine Sponge Diterpene Alkaloid, as an Anti-dormant Mycobacterial Substance. Chembiochem 2013; 15:117-23. [DOI: 10.1002/cbic.201300470] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Indexed: 11/07/2022]
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Moustafa GAI, Nojima S, Yamano Y, Aono A, Arai M, Mitarai S, Tanaka T, Yoshimitsu T. Potent growth inhibitory activity of (±)-platencin towards multi-drug-resistant and extensively drug-resistant Mycobacterium tuberculosis. Med Chem Commun 2013. [DOI: 10.1039/c3md00016h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yamano Y, Arai M, Kobayashi M. Neamphamide B, new cyclic depsipeptide, as an anti-dormant mycobacterial substance from a Japanese marine sponge of Neamphius sp. Bioorg Med Chem Lett 2012; 22:4877-81. [PMID: 22704240 DOI: 10.1016/j.bmcl.2012.05.071] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Revised: 05/03/2012] [Accepted: 05/07/2012] [Indexed: 11/25/2022]
Abstract
A new cyclic depsipeptide, designated neamphamide B (1), was isolated from a marine sponge of Neamphius sp. collected at Okinawa, Japan in 1993 as an anti-mycobacterial substance against active and dormant bacilli. The planar structure of neamphamide B (1) was determined on the basis of spectroscopic analysis, and stereostructure of amino acid was deduced by chromatographic comparison of the acid hydrolysate of 1 with appropriate amino acid standards after derivatizing with FDAA or GITC. Neamphamide B (1) showed potent anti-mycobacterial activity against Mycobacterium smegmatis under standard aerobic growth conditions as well as dormancy-inducing hypoxic conditions with MIC of 1.56 μg/mL. Neamphamide B (1) was also effective to Mycobacterium bovis BCG with MIC in the ranging of 6.25-12.5 μg/mL.
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Affiliation(s)
- Yoshi Yamano
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamada-oka 1-6, Suita, Osaka 565-0871, Japan
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Kojima A, Hanada M, Hilmi A, Inoue T, Watanabe K, Taniguchi M, Kashiwagi M, Umeda N, Tobari H, Kobayashi S, Yamano Y, Grisham LR. Vacuum insulation of the high energy negative ion source for fusion application. Rev Sci Instrum 2012; 83:02B117. [PMID: 22380274 DOI: 10.1063/1.3672471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Vacuum insulation on a large size negative ion accelerator with multiple extraction apertures and acceleration grids for fusion application was experimentally examined and designed. In the experiment, vacuum insulation characteristics were investigated in the JT-60 negative ion source with >1000 apertures on the grid with the surface area of ∼2 m(2). The sustainable voltages varied with a square root of the gap lengths between the grids, and decreased with number of the apertures and with the surface area of the grids. Based on the obtained results, the JT-60SA (super advanced) negative ion source is designed to produce 22 A, 500 keV D(-) ion beams for 100 s.
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Affiliation(s)
- A Kojima
- Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan.
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Han C, Yamano Y, Kakiuchi F, Nakamura K, Uemura D. Grubbs carbene complex-catalyzed cleavage of allyl vic-diols to aldehydes with a co-oxidant: application to the selective cleavage of huge marine molecules. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Arai M, Yamano Y, Fujita M, Setiawan A, Kobayashi M. Stylissamide X, a new proline-rich cyclic octapeptide as an inhibitor of cell migration, from an Indonesian marine sponge of Stylissa sp. Bioorg Med Chem Lett 2011; 22:1818-21. [PMID: 22260773 DOI: 10.1016/j.bmcl.2011.10.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Revised: 10/05/2011] [Accepted: 10/07/2011] [Indexed: 11/25/2022]
Abstract
A new proline-rich cyclic octapeptide named stylissamide X (1) was isolated from an Indonesian marine sponge of Stylissa sp. as an inhibitor of cell migration from the guidance of wound-healing assay. The chemical structure of stylissamide X (1) was determined on the basis of spectroscopic analysis, and stereostructure of the amino acids were deduced by Marfey's method. Compound 1 showed inhibitory activity against migration of HeLa cells in the ranges of 0.1-10 μM concentration through both wound-healing assay and chemotaxicell chamber assay, while the cell viability was maintained more than 75% up to 10 μM concentration of 1.
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Affiliation(s)
- Masayoshi Arai
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.
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Pan G, Hanaoka T, Yu L, Na J, Yamano Y, Hara K, Ichiba M, Nakadate T, Kishi R, Wang P, Yin H, Zhang S, Feng Y. Associations between hazard indices of di-n-butylphthalateand di-2-ethylhexylphthalate exposure and serum reproductive hormone levels among occupationally exposed and unexposed Chinese men. ACTA ACUST UNITED AC 2011; 34:e397-406. [DOI: 10.1111/j.1365-2605.2011.01201.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Homma T, Fujimura T, Maki H, Yamano Y, Shimada J, Kuwahara S. In vitro antibacterial activities of S-013420, a novel bicyclolide, against respiratory tract pathogens. J Antimicrob Chemother 2010; 65:1433-40. [DOI: 10.1093/jac/dkq147] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Takamura H, Kadonaga Y, Yamano Y, Han C, Kadota I, Uemura D. Stereoselective synthesis and absolute configuration of the C33–C42 fragment of symbiodinolide. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Takamura H, Kadonaga Y, Yamano Y, Han C, Aoyama Y, Kadota I, Uemura D. Synthesis and structural determination of the C33–C42 fragment of symbiodinolide. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.11.056] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Yamano Y, Takahashi M, Kobayashi S, Hanada M, Ikeda Y. Surface discharge related properties of fiberglass reinforced plastic insulator for use in neutral beam injector of JT-60U. Rev Sci Instrum 2008; 79:02A524. [PMID: 18315145 DOI: 10.1063/1.2828069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Neutral beam injection (NBI) used for JT-60U is required to generate negative ions of 500 keV energies. To produce such high-energy ions, three-stage electrostatic accelerators consisting of three insulator rings made of fiberglass reinforced plastic (FRP) are applied. The surface discharges along FRP insulators are one of the most serious problems in the development of NBI. To increase the hold-off voltage against surface flashover events, it is necessary to investigate the FRP insulator properties related to surface discharges in vacuum. This paper describes surface flashover characteristics for FRP and alumina samples under vacuum condition. The results show that the fold-off voltages for FRP samples are inferior to those of alumina ceramics. In addition, measurement results of surface resistivity and volume resistivity under vacuum and atmospheric conditions, secondary electron emission characteristics, and cathodoluminescence under some keV electron beam irradiation are also reported. These are important parameters to analyze surface discharge of insulators in vacuum.
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Affiliation(s)
- Y Yamano
- School of Science and Engineering, Saitama University, Japan.
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38
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Nomura H, Uzawa K, Yamano Y, Fushimi K, Ishigami T, Kato Y, Saito K, Nakashima D, Higo M, Kouzu Y, Ono K, Ogawara K, Shiiba M, Bukawa H, Yokoe H, Tanzawa H. Network-based analysis of calcium-binding protein genes identifies Grp94 as a target in human oral carcinogenesis. Br J Cancer 2007; 97:792-801. [PMID: 17726464 PMCID: PMC2360381 DOI: 10.1038/sj.bjc.6603948] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
To characterise Ca(2+) -binding protein gene expression changes in oral squamous cell carcinomas (OSCCs), we compared the gene expression profiles in OSCC-derived cell lines with normal oral tissues. One hundred Ca(2+) -binding protein genes differentially expressed in OSCCs were identified, and genetic pathways associated with expression changes were generated. Among genes mapped to the network with the highest significance, glucose-regulated protein 94 kDa (Grp94) was evaluated further for mRNA and protein expression in the OSCC cell lines, primary OSCCs, and oral premalignant lesions (OPLs). A significant (P<0.001) overexpression of Grp94 protein was observed in all cell lines compared to normal oral epithelium. Immunohistochemical analysis showed highly expressed Grp94 in primary OSCCs and OPLs, whereas most of the corresponding normal tissues had no protein immunoreaction. Real-time quantitative reverse transcriptase-PCR data agreed with the protein expression status. Moreover, overexpression of Grp94 in primary tumours was significantly (P<0.001) correlated with poor disease-free survival. The results suggested that Grp94 may have potential clinical application as a novel diagnosis and prognostic biomarker for human OSCCs.
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MESH Headings
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Blotting, Western
- Calcium-Binding Proteins/genetics
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/pathology
- Cell Line, Tumor
- Disease-Free Survival
- Fluorescent Antibody Technique, Direct
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Humans
- Immunohistochemistry
- Kaplan-Meier Estimate
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Mouth Neoplasms/drug therapy
- Mouth Neoplasms/genetics
- Mouth Neoplasms/pathology
- Neoplasm Staging
- Predictive Value of Tests
- Prognosis
- RNA, Messenger/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Up-Regulation
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Affiliation(s)
- H Nomura
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - K Uzawa
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
- E-mail:
| | - Y Yamano
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - K Fushimi
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - T Ishigami
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Y Kato
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - K Saito
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - D Nakashima
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - M Higo
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - Y Kouzu
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - K Ono
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - K Ogawara
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - M Shiiba
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - H Bukawa
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - H Yokoe
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
| | - H Tanzawa
- Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
- Division of Dentistry and Oral-Maxillofacial Surgery, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
- Center of Excellence (COE) Program in the 21st Century, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
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Puccioni-Sohler M, Yamano Y, Rios M, Carvalho SMF, Vasconcelos CCF, Papais-Alvarenga R, Jacobson S. Differentiation of HAM/TSP from patients with multiple sclerosis infected with HTLV-I. Neurology 2007; 68:206-13. [PMID: 17224575 DOI: 10.1212/01.wnl.0000251300.24540.c4] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To better differentiate patients with human T lymphotropic virus type I (HTLV-I)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) from patients with multiple sclerosis (MS) who are HTLV-I seropositive, we compared the HTLV-I antibodies and HTLV-I proviral DNA loads in CSF and peripheral blood mononuclear cells (PBMC). METHODS Intrathecal synthesis of HTLV-I antibodies and HTLV-I proviral DNA loads in CSF and PBMC were measured and compared in 39 Brazilian patients: 17 HAM/TSP and 22 HTLV-I-seropositive non-HAM/TSP (7 with other neurologic diseases, 11 asymptomatic carriers, and 4 HTLV-I-seropositive patients with an MS-like phenotype). In addition, we followed immunologic and virologic markers in comparison to the clinical course (by Kurtzke Expanded Disability Status Scale) of seven patients (five with HAM/TSP and two with an MS-like phenotype) for a mean period of 16 (SD +/- 5) months. RESULTS The proviral load in CSF and PBMC was higher in HAM/TSP than in non-HAM/TSP patients, except in the two HTLV-I-seropositive patients with an MS-like phenotype that also fulfilled the criteria for HAM/TSP. Higher HTLV-I proviral DNA load in CSF was associated with the higher proviral DNA load in PBMC and lower intrathecal synthesis of HTLV-I antibodies. These laboratory findings remained stable during follow-up. CONCLUSION The high proviral load in peripheral blood mononuclear cells or in CSF or both may be a good marker of human T lymphotropic virus type I (HTLV-I)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) and can differentiate patients with HAM/TSP from patients with multiple sclerosis infected with HTLV-I.
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Affiliation(s)
- M Puccioni-Sohler
- Neurological Service, Gaffree Guinle University Hospital, Federal University of Rio de Janeiro State, Rio de Janeiro, Brazil.
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Nakadate T, Yamano Y, Adachi C, Kikuchi Y, Nishiwaki Y, Nohara M, Satoh T, Omae K. A cross sectional study of the respiratory health of workers handling printing toner dust. Occup Environ Med 2006; 63:244-9. [PMID: 16556743 PMCID: PMC2078083 DOI: 10.1136/oem.2005.020644] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Although recent case reports have suggested possible respiratory effects of solid toner dust inhalation, this hypothesis has not been verified by epidemiological studies. OBJECTIVES To conduct a cross sectional study to evaluate the association between the biological indices of lung fibrosis and toner dust exposure in an occupational cohort handling solid toner dust in their work life. METHODS A total of 600 male toner workers and 212 control subjects were surveyed in terms of their subjective respiratory symptoms, pulmonary functions, and chest radiographic findings. In addition to the exposure history, the current working conditions and personal exposure levels to toner dust were also examined. RESULTS Although subjects handling toner for more than 20 years tended to show a higher prevalence of respiratory symptoms and minimal chest x ray abnormalities, there was no consistent relation between the exposure to toner dust and the biological responses of the respiratory system. CONCLUSION Deterioration of respiratory health related to toner dust exposure is less likely to occur in current well controlled work environments, especially if the powdered toner is handled carefully. Nonetheless, it is important to collect further epidemiological evidence on the biological effects of toner dust inhalation, preferably using a longitudinal study design.
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Affiliation(s)
- T Nakadate
- Department of Hygiene, Showa University School of Medicine, Tokyo, Japan.
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41
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Zhang J, Ichiba M, Hanaoka T, Pan G, Yamano Y, Hara K, Takahashi K, Tomokuni K. Leukocyte 8-hydroxydeoxyguanosine and aromatic DNA adduct in coke-oven workers with polycyclic aromatic hydrocarbon exposure. Int Arch Occup Environ Health 2003; 76:499-504. [PMID: 12844269 DOI: 10.1007/s00420-003-0449-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2002] [Accepted: 03/11/2003] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the potential for exposure to polycyclic aromatic hydrocarbons (PAHs) to induce oxidative DNA damage, we conducted a cross-sectional study in coke-oven workers employed at an iron-steel factory. METHODS The study population contained 119 coke-oven workers from different work areas of the oven and 38 controls. Personal information on age, employment duration, smoking habit and alcohol consumption was obtained at an interview. Leukocyte 8-hydroxydeoxyguanosine (8-OHdG) was measured by high performance liquid chromatography with electrochemical detection. Leukocyte aromatic DNA adducts as effective dose, and urinary 1-hydroxypyren as internal dose, were also measured, and used to analyze the relationship of 8-OHdG with other biomarkers for PAH exposure, tobacco smoke and alcohol consumption. RESULTS The leukocyte 8-OHdG revealed a wide inter-individual variation. The highest 8-OHdG level was detected in bottom-workers of the coke-oven. There were significant differences among the four different work areas ( P=0.02). We could not find significant correlation between 8-OHdG levels and urinary 1-hydroxypyrene, but a weakly positive correlation was found between 8-OHdG and leukocyte aromatic DNA adducts among all subjects (r=0.19 P=0.03). We could not observe any effect of smoking and alcohol drinking on 8-OHdG production. CONCLUSION We could not find clear evidence that PAH exposure induces oxidative DNA damage.
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Affiliation(s)
- J Zhang
- Department of Social and Environmental Medicine, Saga Medical School, Japan
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42
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Abstract
BACKGROUND Little information is available on the kinematics of the normal knee in deep flexion. The purpose of this study was to use magnetic resonance imaging to analyze the patellofemoral articulation in deep flexion. METHODS Axial scans were made of the patellofemoral joint of twenty healthy Japanese volunteers with the knee in approximately 90 degrees of flexion, in maximum active flexion (mean [and standard deviation], 140 degrees +/- 10 degrees ), and in maximum passive flexion (mean, 156 degrees +/- 5 degrees ). A fat-suppressed, three-dimensional, fast low-angle shot sequence was used to visualize the articular cartilage. The patellofemoral contact area was determined on sequential images and was reconstructed three-dimensionally. RESULTS At 90 degrees of flexion, the contact area on the patella was continuous over the medial and lateral facets in fourteen knees and was located in the proximal half of the articular surface. At maximum active and passive flexion, the odd facet engaged in fifteen and eighteen knees, respectively. At maximum passive flexion, the contact area of the lateral facet moved distally and decreased significantly (p = 0.0002). From 90 degrees of flexion to maximum active flexion, the mean total contact area remained constant (3.43 +/- 0.70 and 3.62 +/- 0.72 cm (2), respectively); it then decreased significantly in maximum passive flexion (2.96 +/- 0.78 cm (2), p = 0.04). CONCLUSIONS The contact area on the patella was divided into two parts (the odd and lateral facets) and moved distally in deep knee flexion. The size of the contact area on the lateral facet significantly decreased in maximum passive flexion.
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Affiliation(s)
- S Nakagawa
- Osaka City University Medical School, Department of Orthopaedic Surgery, Japan
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43
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Abstract
Anthropometric data on proximal tibiae of 100 knees in 80 Japanese patients undergoing total knee arthroplasty were obtained. Anterior-posterior (AP) and medial-lateral (ML) lengths of the tibia were measured on computed tomography scans and intraoperatively on tibial resection surfaces. A special small component is unnecessary, and size variation should focus on ML length of 65 to 75 mm because this includes 90% of women's knees. AP-to-ML ratio had a negative correlation with ML length, indicating that small knees were longer in the AP direction. Most prostheses had AP mismatch up to 5 mm for small women's knees. These data could provide the basis for designing the optimal tibial component for most of the Asian-Pacific population.
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Affiliation(s)
- K Uehara
- Department of Orthopaedic Surgery, Osaka City University Medical School, Abeno-ku, Osaka, Japan
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44
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Abstract
The purpose of the current study was to investigate the bone anatomy in determining the rotational alignment in total knee arthroplasty using computed tomography. Axial images of 109 knees in 83 patients with varus osteoarthritis who had total knee arthroplasty were analyzed. On the images of the distal femur and the proximal tibia, a baseline for the anteroposterior axis of each component was drawn based on the epicondylar axis for the femur and the medial (1/3) of the tibial tuberosity for the tibia. The angle between these two lines was analyzed as the rotational mismatch between the components when they were aligned to the anatomic landmarks of each bone. Fifty-four knees (49.5%) had an angle of 5 degrees or greater and 13 knees (11.9%) had an angle of 10 degrees or greater. There was a tendency to align the tibial component in external rotation relative to the femoral component. The results indicated that the landmarks of each bone were the intrinsic cause of the rotational mismatch in knees with varus osteoarthritis. Surgeons doing total knee arthroplasties should be aware of this and check the rotational mismatch between the components. When it is present, the tibial component should be realigned to match the femoral component rotation to minimize problems caused by the mismatch.
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Affiliation(s)
- K Uehara
- Department of Orthopaedic Surgery, Osaka City University Medical School, Japan
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45
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Hoshi K, Yamano Y, Mitsunaga A, Shimizu S, Kagawa J, Ogiuchi H. Gastrointestinal diseases and halitosis: association of gastric Helicobacter pylori infection. Int Dent J 2002; 52 Suppl 3:207-11. [PMID: 12090454 DOI: 10.1002/j.1875-595x.2002.tb00926.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The relationship between gastrointestinal conditions and halitosis is discussed. Few reports have suggested that gastrointestinal diseases may cause halitosis. H. pylori infection, which causes gastric ulcers, is considered as a possible cause for halitosis. Intensity of malodour of mouth air was found to be higher in H. pylori-positive patients than in negative patients. The levels of hydrogen sulphide and dimethyl sulphide in mouth air were also significantly higher in the positive patients than in the negative patients (P<0.05). When odour strength in exhaled breath was compared between the two groups, no significant difference was found. Hence, H. pylori infection might not cause a systemic condition producing breath odour. Although there were no significant differences in periodontal parameters or tongue coating between the positive and negative groups, H. pylori may be a frequent contributor to the production of malodour even though its role had not been suspected before. Further study would be necessary to clarify the reason for the increase of volatile sulphur compounds (VSCs) level in H. pylori infection.
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Affiliation(s)
- K Hoshi
- Department of Oral and Maxillofacial Surgery, Tokyo Women's Medical University, School of Medicine, Japan.
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46
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Inori F, Ohashi H, Minoda Y, Masada T, Yamano Y. Possibility of "distraction arthrogenesis": first report in rabbit model. J Orthop Sci 2002; 6:585-90. [PMID: 11793183 DOI: 10.1007/s007760100016] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2001] [Accepted: 07/15/2001] [Indexed: 10/27/2022]
Abstract
We investigated the possibility of articular cartilage distraction for use in reconstructing joint structure and for increasing the donor site of osteochondral grafts. Intraarticular osteotomy was performed at the femoral condyle in 12 Japanese white rabbits. The bone segment was fixed with a specially designed external fixator. After a 3-week waiting period, distraction was performed intermittently for 3 weeks (0.7 mm x 3 times per week) in the distraction group (n = 7) and, in the remaining animals (gap group; n = 5), a gap of 6.3 mm in length was made at surgery. All rabbits received etidronate injections (20 mg/kg x2 times per week) for 5 weeks, to slow mineralization. The femoral condyle was harvested 9 weeks postoperatively and decalcified sagittal sections were stained and evaluated, using a histological grading scale. In the distraction group, distraction of 4.2 +/- 1.4 mm was achieved, and the distracted cartilage area was filled with regenerated cartilage, without any gap between the regenerated and the adjacent articular cartilage. This regenerated cartilage showed metachromasia with toluidine blue. In the gap group, newly formed cartilage tissue was folded from the edge of the osteotomy site and fibrous tissue was interposed in the gap. The histological grading score was significantly lower in the distraction group (P < 0.02). Our preliminary results demonstrated the possibility of cartilage distraction; however, long-term observation will be necessary to confirm the characteristics of the distracted cartilage. We may call the process "distraction arthrogenesis", because the entire articular entity, which consists of cartilage, subchondral bone, and bone, could be distracted at once.
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Affiliation(s)
- F Inori
- Department of Orthopaedic Surgery, Ohno Memorial Hospital, 1-26-10 Minamihorie, Nishi-ku, Osaka 550-0015, Japan
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47
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Abstract
The MDR1 gene, considered to be involved in multidrug resistance of cancer cells, is expressed in liver, kidney, small intestine and the blood-brain barrier. We investigated MDR1 gene expression in the well-differentiated hepatoma cell line HepG2 after exposure to several stresses and found that sodium arsenite treatment increased MDR1 gene expression 2.6-fold. Deletion analysis of the MDR1 promoter indicated that the transcriptional activation after exposure to arsenite depends on a 60-bp region containing two heat-shock responsive elements.
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Affiliation(s)
- N Kioka
- Department of Agricultural Chemistry, Kyoto University, Japan
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48
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Yamano Y, Ohyama K, Sano T, Ohta M, Shimada A, Hirakawa Y, Sugimoto M, Morishima I. A novel spermatogenesis-related factor-1 gene expressed in maturing rat testis. Biochem Biophys Res Commun 2001; 289:888-93. [PMID: 11735130 DOI: 10.1006/bbrc.2001.6048] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A rat gene with testis-specific expression coinciding with spermatogenesis was cloned by differential display. This spermatogenesis-related factor-1 (SRF-1) gene was not expressed in other organs. Testicular expression was detected from 5 weeks of age and increased up to 15 weeks; this level of expression was maintained for 63 weeks. The 750-bp cloned gene was coded for an open reading frame of 202 amino acids. According to in situ hybridization at 7 weeks, this gene was expressed mainly in spermatocyte. The gene product may function as a molecular motor in meiosis, as the deduced amino acid sequence showed partial homology with kinesin-related proteins. The action of this gene and its product with respect to division of reproductive cells requires further investigation.
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Affiliation(s)
- Y Yamano
- Department of Biochemistry and Biotechnology, Tottori University, Tottori, 680-8553, Japan.
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49
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Mayne M, Cheadle C, Soldan SS, Cermelli C, Yamano Y, Akhyani N, Nagel JE, Taub DD, Becker KG, Jacobson S. Gene expression profile of herpesvirus-infected T cells obtained using immunomicroarrays: induction of proinflammatory mechanisms. J Virol 2001; 75:11641-50. [PMID: 11689646 PMCID: PMC114751 DOI: 10.1128/jvi.75.23.11641-11650.2001] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2001] [Accepted: 08/28/2001] [Indexed: 11/20/2022] Open
Abstract
Herpesvirus infections can frequently lead to acute inflammation, yet the mechanisms regulating this event remain poorly understood. In order to determine some of the immunological mechanisms regulated by human herpesvirus infections, we studied the gene expression profile of lymphocytes infected with human herpesvirus 6 (HHV-6) by using a novel immunomicroarray. Our nylon-based immunomicroarray contained more than 1,150 immune response-related genes and was highly consistent between experiments. Experimentally, we found that independently of the HHV-6 strain used to infect T cells, multiple proinflammatory genes were increased and anti-inflammatory genes were decreased at the mRNA and protein levels. HHV-6 strains A and B increased expression of the genes for interleukin-18 (IL-18), the IL-2 receptor, members of the tumor necrosis factor alpha superfamily receptors, mitogen-activated protein kinase, and Janus kinase signaling proteins. As reported previously, CD4 protein levels were also increased significantly. Specific type 2 cytokines, including IL-10, its receptor, and IL-14, were downregulated by HHV-6 infection and, interestingly, amyloid precursor proteins and type 1 and 2 presenilins. Thus, T cells respond to HHV-6 infection by inducing a type 1 immune response that may play a significant role in the development and progression of diseases associated with HHV-6, including pediatric, hematologic, transplant, and neurologic disorders.
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Affiliation(s)
- M Mayne
- Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, Manitoba, Canada.
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50
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Nagai M, Yamano Y, Brennan MB, Mora CA, Jacobson S. Increased HTLV-I proviral load and preferential expansion of HTLV-I Tax-specific CD8+ T cells in cerebrospinal fluid from patients with HAM/TSP. Ann Neurol 2001; 50:807-12. [PMID: 11761481 DOI: 10.1002/ana.10065] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
To date, high human T-cell lymphotropic virus type I proviral load in patients with human T-cell lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis has been reported and is thought to be related to the pathogenesis of human T-cell lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis. However, the proviral load in cerebrospinal fluid has not been well investigated. We measured human T-cell lymphotropic virus type I proviral load in cerebrospinal fluid cells from human T-cell lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis patients using real-time quantitative polymerase chain reaction (TaqMan). Human T-cell lymphotropic virus type I proviral load in cerebrospinal fluid cells were significantly higher than that of the matched peripheral blood mononuclear cells, and a high ratio of human T-cell lymphotropic virus type I proviral load in cerebrospinal fluid cells to peripheral blood mononuclear cells were observed in patients with short duration of illness. Human T-cell lymphotropic virus type I Tax-specific CD8+ T cells, as detected by peptide-loaded HLA tetramers, accumulated in cerebrospinal fluid compared with that in peripheral blood mononuclear cells, while the frequency of cytomegalovirus-specific CD8+ T cells in cerebrospinal fluid was reduced. These observations suggest that accumulation of both human T-cell lymphotropic virus type I-infected cells and preferential expansion of human T-cell lymphotropic virus type I-specific CD8+ cells in cerebrospinal fluid may play a role in the pathogenesis of human T-cell lymphotropic virus type I-associated myelopathy/tropical spastic paraparesis.
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Affiliation(s)
- M Nagai
- Neuroimmunology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
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