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Yoshizawa R, Inagaki Y, Momma H, Kwon E, Ohara K, Yamaguchi K, Setaka W. Synthesis and fluorescence properties of 9,9-dimethylfluorene-diyl bridged molecular gyrotops: Effects of slight fluorophore motion on fluorescence efficiency in solid state. NEW J CHEM 2023. [DOI: 10.1039/d2nj05873a] [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: 02/17/2023]
Abstract
The fluorescence of organic molecules has been widely investigated in the development of functional materials. Clarifying the relationship between molecular motion and fluorescence quantum yield (FQY) can aid in developing...
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2
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Abstract
Ditriptycilmethanes are known as molecular bevel gears because the two triptycil groups show correlated rotation. In this report, molecular bevel gears bridged with a group 14 element, bis(methyltriptycil)X (X = SiH2, GeH2, GeF2), were synthesized, and their gearing properties were investigated. Gear slippage, that is an error in gear rotation, is observed in high-temperature solutions of molecular bevel gears. Heavy atom derivatives undergo gear slippage more easily due to the long bond lengths and wide angles between the two triptycil units and the bridging group 14 element. Activation energies of gear slippages were estimated by temperature-dependent NMR spectroscopy and DFT calculations, and theoretical thermodynamic parameters for gear slippage were found to be in excellent agreement with experimental values. The results indicate that theoretical calculations for gear rotation in molecular bevel gears can accurately reproduce experimental phenomena.
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Affiliation(s)
- Kazuma Okamura
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , 1-1 minami-Osawa , Hachioji, Tokyo 192-0397 , Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , 1-1 minami-Osawa , Hachioji, Tokyo 192-0397 , Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Wataru Setaka
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , 1-1 minami-Osawa , Hachioji, Tokyo 192-0397 , Japan
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3
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Hashimoto H, Inagaki Y, Momma H, Kwon E, Setaka W. Kinetic Stabilization of Carbazole Nitroxides by Inclusion in a Macrocage and Their Electron Spin Resonance Characterization. J Org Chem 2019; 84:11783-11789. [PMID: 31442043 DOI: 10.1021/acs.joc.9b01686] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Some nitroxides, for example, tetramethylpyridiniumoxide, are known as stable radicals; however, carbazole nitroxide is less stable. The kinetic stabilization of labile radicals by introduction of bulky substituents is usually effective to investigate intrinsic properties of the molecule because of small electronic perturbation induced by the substituents. In this study, macrocage molecules with a carbazole nitroxide connected by covalent bonds were newly designed as kinetically stabilized carbazole nitroxides. The nitroxides were prepared and characterized by electron spin resonance spectroscopy. The caged nitroxides presented long half-lives (∼50 h) by kinetic analysis.
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Affiliation(s)
- Hikaru Hashimoto
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Wataru Setaka
- Division of Applied Chemistry, Faculty of Urban Environmental Sciences , Tokyo Metropolitan University , Hachioji , Tokyo 192-0397 , Japan
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4
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Hashimoto H, Inagaki Y, Momma H, Kwon E, Yamaguchi K, Setaka W. Polarized fluorescence of a crystal having uniaxially oriented molecules by a carbazole-diyl-bridged macrocage. CrystEngComm 2019. [DOI: 10.1039/c9ce00706g] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An axially oriented π-electron system is achieved in a single crystal of a macrocage molecule, and polarized fluorescence of the single crystal was observed.
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Affiliation(s)
- Hikaru Hashimoto
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus
- Tokushima Bunri University
- Sanuki
- Japan
| | - Wataru Setaka
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
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5
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Suzuki T, Ariefta NR, Koseki T, Furuno H, Kwon E, Momma H, Harneti D, Maharani R, Supratman U, Kimura KI, Shiono Y. New polyketides, paralactonic acids A-E produced by Paraconiothyrium sp. SW-B-1, an endophytic fungus associated with a seaweed, Chondrus ocellatus Holmes. Fitoterapia 2018; 132:75-81. [PMID: 30496810 DOI: 10.1016/j.fitote.2018.11.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 06/22/2018] [Revised: 09/11/2018] [Accepted: 11/24/2018] [Indexed: 10/27/2022]
Abstract
Five polyketides, paralactonic acids A-E (1-5) were isolated from Paraconiothyrium sp. SW-B-1, an endophytic fungus isolated from the seaweed, Chondrus ocellatus Holmes. Their structures were determined by various spectroscopic methods, predominantly by 2D NMR spectroscopic analyses. The absolute configurations of compounds 1-5 were determined by comparison of the experimental and calculated ECD spectra. Compound 5 showed moderate antibacterial activity and restored the growth of a mutant yeast strain inhibited by hyperactivated Ca2+-signaling.
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Affiliation(s)
- Takuma Suzuki
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata 997-8555, Japan
| | - Nanang Rudianto Ariefta
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Takuya Koseki
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata 997-8555, Japan
| | - Hiroshi Furuno
- Green Asia Education Center, Kyushu University, 6-1 Kasuga-koen, Kasuga-city, Fukuoka 816-8580, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Desi Harneti
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Rani Maharani
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Unang Supratman
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Ken-Ichi Kimura
- Graduate School of Arts and Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Yoshihito Shiono
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata 997-8555, Japan; The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan.
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6
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Tsurunaga M, Inagaki Y, Momma H, Kwon E, Yamaguchi K, Yoza K, Setaka W. Dielectric Relaxation of Powdered Molecular Gyrotops Having a Thiophene Dioxide-diyl as a Dipolar Rotor. Org Lett 2018; 20:6934-6937. [PMID: 30346183 DOI: 10.1021/acs.orglett.8b03087] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The dielectric properties of powdered molecular gyrotops with a thiophenedioxide-diyl are reported. Crystals without a solvent molecule show usual dielectric relaxation spectra due to orientation polarization of the dipolar rotor, while a crystal having ethanol as the crystalline solvent molecule showed novel temperature-dependent dielectric relaxation switching by crystal-to-crystal phase transition, which is induced by hydrogen-bonding interactions between thiophene dioxide and ethanol.
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Affiliation(s)
- Miyako Tsurunaga
- Division of Applied Chemistry , Faculty of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 minami-Osawa , Hachioji, Tokyo 192-0397 , Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry , Faculty of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 minami-Osawa , Hachioji, Tokyo 192-0397 , Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University , Aoba-ku, Sendai 980-8578 , Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus , Tokushima Bunri University , 1314-1 Shido , Sanuki , Kagawa 769-2193 , Japan
| | - Kenji Yoza
- Bruker AXS, 3-9-B Moriya , Kanagawa-ku, Yokohama 221-0022 , Japan
| | - Wataru Setaka
- Division of Applied Chemistry , Faculty of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 minami-Osawa , Hachioji, Tokyo 192-0397 , Japan
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7
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Takashima H, Inagaki Y, Momma H, Kwon E, Yamaguchi K, Setaka W. Ferrocene-diyl Bridged Macrocages: Steric Effects of the Cage on the Redox Properties of Ferrocene Moiety. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00154] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | | | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
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8
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Tchoukoua A, Tabopda TK, Usukhbayar N, Kimura KI, Kwon E, Momma H, Koseki T, Shiono Y, Ngadjui BT. New triterpene saponins from the roots of Acacia macrostachya (Mimosaceae). Biosci Biotechnol Biochem 2017; 81:2261-2267. [PMID: 29052455 DOI: 10.1080/09168451.2017.1390393] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 10/18/2022]
Abstract
Four new oleanane-type saponins, macrostachyaosides A, B, C, and D (1-4) were isolated from the roots of Acacia macrostachya. Their structures were elucidated on the basis of extensive 1D- and 2D-NMR data and HR-ESI-MS analyses. At concentrations of 100 μM of each compounds, none of the tested compounds caused a significant growth reduction against HL60 cells.
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Affiliation(s)
- Abdou Tchoukoua
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | | | - Narandulam Usukhbayar
- c The United Graduate School of Agricultural Sciences , Iwate University , Morioka , Japan
| | - Ken-Ichi Kimura
- c The United Graduate School of Agricultural Sciences , Iwate University , Morioka , Japan
| | - Eunsang Kwon
- d Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Hiroyuki Momma
- d Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Takuya Koseki
- b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Yoshihito Shiono
- b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Bonaventure Tchaleu Ngadjui
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,e Department of Medicine and Traditional Pharmacopoeia, Faculty of Medicine and Biomedical Sciences , University of Yaounde 1 , Yaounde , Cameroon
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9
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Ariefta NR, Kristiana P, Nurjanto HH, Momma H, Kwon E, Ashitani T, Tawaraya K, Murayama T, Koseki T, Furuno H, Usukhbayar N, Kimura KI, Shiono Y. Nectrianolins A, B, and C, new metabolites produced by endophytic fungus Nectria pseudotrichia 120-1NP. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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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10
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Tchoukoua A, Kuiate Tabopda T, Konga Simo I, Uesugi S, Ohno M, Kimura KI, Kwon E, Momma H, Shiono Y, Ngadjui BT. Albidosides H and I, two new triterpene saponins from the barks of Acacia albida Del. (Mimosaceae). Nat Prod Res 2017; 32:924-932. [PMID: 28868920 DOI: 10.1080/14786419.2017.1371156] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Two new triterpene saponins, albidosides H (1) and I (2), along with the three known saponins were isolated from the barks of Acacia albida. Their structures were elucidated on the basis of extensive 1D- and 2D-NMR studies and mass spectrometry. Albidosides H (1) and I (2) were assayed for their cytotoxicity against HeLa and HL60 cells using MTT method.
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Affiliation(s)
- Abdou Tchoukoua
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | | | - Ingrid Konga Simo
- c Department of Chemistry , University of Dschang , Dschang , Cameroon
| | - Shota Uesugi
- d Laboratory of Chemical Biology , The United Graduate School of Agricultural Sciences, Iwate University , Morioka , Japan
| | - Misa Ohno
- d Laboratory of Chemical Biology , The United Graduate School of Agricultural Sciences, Iwate University , Morioka , Japan
| | - Ken-Ichi Kimura
- d Laboratory of Chemical Biology , The United Graduate School of Agricultural Sciences, Iwate University , Morioka , Japan.,e Graduate School of Agriculture , Iwate University , Morioka , Japan
| | - Eunsang Kwon
- f Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Hiroyuki Momma
- f Research and Analytical Center for Giant Molecules, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Yoshihito Shiono
- b Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Bonaventure Tchaleu Ngadjui
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon.,g Faculty of Medicine and Biomedical Sciences, Department of Medicine and Traditional Pharmacopoeia , University of Yaounde 1 , Yaounde , Cameroon
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11
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Tchoukoua A, Tabopda TK, Uesugi S, Ohno M, Kimura KI, Kwon E, Momma H, Horo I, Çalişkan ÖA, Shiono Y, Ngadjui BT. Triterpene saponins from the roots of Acacia albida Del. (Mimosaceae). Phytochemistry 2017; 136:31-38. [PMID: 28043655 DOI: 10.1016/j.phytochem.2016.12.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 12/21/2016] [Accepted: 12/22/2016] [Indexed: 06/06/2023]
Abstract
Seven previously undescribed bidesmosidic triterpenoid saponins named albidosides A - G, were isolated from a methanol extract of the roots of Acacia albida. Their structures were elucidated using 1D and 2D NMR spectroscopy and mass spectrometry and determined to be bidesmosides of oleanolic acid and of 16α-hydroxyoleanolic acid. Albidosides B - G were assayed for their cytotoxicity against HeLa and HL60 cells using MTT method and microscopic observation.
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Affiliation(s)
- Abdou Tchoukoua
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon; Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata, 997-8555, Japan
| | - Turibio Kuiate Tabopda
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon.
| | - Shota Uesugi
- Laboratory of Chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Misa Ohno
- Laboratory of Chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Ken-Ichi Kimura
- Laboratory of Chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan; Graduate School of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Ibrahim Horo
- Department of Chemistry, Faculty of Science, Ege University, 35100, Bornova, İzmir, Turkey
| | - Özgen Alankuş Çalişkan
- Department of Chemistry, Faculty of Science, Ege University, 35100, Bornova, İzmir, Turkey
| | - Yoshihito Shiono
- Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata, 997-8555, Japan.
| | - Bonaventure Tchaleu Ngadjui
- Department of Organic Chemistry, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon; Department of Medicine and Traditional Pharmacopoeia, Faculty of Medicine and Biomedical Sciences, University of Yaounde 1, P.O. Box 1364, Yaoundé, Cameroon.
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12
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Fotso GW, Kamga J, Ngameni B, Uesugi S, Ohno M, Kimura KI, Momma H, Kwon E, Furuno H, Shiono Y, Ingrid SK, Yeboah SO, Ngadjui BT. Secondary metabolites with antiproliferative effects from Albizia glaberrima var glabrescens Oliv. (Mimosoideae). Nat Prod Res 2017; 31:1981-1987. [DOI: 10.1080/14786419.2016.1269097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ghislain Wabo Fotso
- Faculty of Science, Department of Organic Chemistry, University of Yaoundé I, Yaoundé, Cameroon
| | - Justin Kamga
- Faculty of Science, Department of Organic Chemistry, University of Yaoundé I, Yaoundé, Cameroon
| | - Bathelemy Ngameni
- Faculty of Medicine and Biomedical Science, Department of Pharmacognosy and Pharmaceutical Sciences, University of Yaoundé I, Yaoundé, Cameroon
| | - Shota Uesugi
- Laboratory of chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Japan
| | - Misa Ohno
- Laboratory of chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Japan
| | - Ken-Ichi Kimura
- Laboratory of chemical Biology, The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Japan
| | - Hiroyuki Momma
- Research and Analytical Center for giant Molecules, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Eunsang Kwon
- Research and Analytical Center for giant Molecules, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Hiroshi Furuno
- Green Asia Education Center, Kyushu University, Fukuoka, Japan
| | - Yoshihito Shiono
- Faculty of Agriculture, Department of Food, Life, and Environmental Science, Yamagata University, Tsuruoka, Japan
| | - Simo K. Ingrid
- Faculty of Science, Department of Chemistry, University of Dschang, Dschang, Cameroon
| | - Samuel O. Yeboah
- Faculty of Science, Department of Chemistry, University of Botswana, Gaborone, Botswana
| | - Bonaventure T. Ngadjui
- Faculty of Science, Department of Organic Chemistry, University of Yaoundé I, Yaoundé, Cameroon
- Faculty of Medicine and Biomedical Science, Department of Pharmacognosy and Pharmaceutical Sciences, University of Yaoundé I, Yaoundé, Cameroon
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13
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Fujiwara A, Inagaki Y, Momma H, Kwon E, Yamaguchi K, Kanno M, Kono H, Setaka W. A crystalline molecular gyrotop with a biphenylene dirotor and its temperature-dependent birefringence. CrystEngComm 2017. [DOI: 10.1039/c7ce01081h] [Citation(s) in RCA: 16] [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] [Indexed: 01/05/2023]
Abstract
A crystalline molecular gyrotop with a biphenylene dirotor showed a reduction in the birefringence with increasing temperature.
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Affiliation(s)
- Atsushi Fujiwara
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Kentaro Yamaguchi
- Faculty of Pharmaceutical Sciences at Kagawa Campus
- Tokushima Bunri University
- Sanuki
- Japan
| | - Manabu Kanno
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Hirohiko Kono
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai
- Japan
| | - Wataru Setaka
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
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14
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Tchoukoua A, Kuiate Tabopda T, Uesugi S, Kimura KI, Kwon E, Momma H, Ngadjui BT, Koseki T, Shiono Y. Two new 5-deoxyflavan-3,4-diol glucosides from roots of Albizia chevalieri. Magn Reson Chem 2016; 54:893-896. [PMID: 27546306 DOI: 10.1002/mrc.4504] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/13/2016] [Accepted: 08/17/2016] [Indexed: 06/06/2023]
Abstract
Phytochemical investigation of the roots of Albizia chevalieri led to the isolation of two new 5-deoxyflavan-3,4-diol glucosides from roots of A. chevalieri, Chevalieriflavanosides A and B. Their structures were established by 2D NMR techniques, UV, IR, CD, and mass spectrometry. Cytotoxicity of the two compounds was evaluated against acute promyelocytic leukemia HL60 cells. The antibacterial activities of 1 and 2 also were evaluated against Pseudomonas aeruginosa and Staphylococcus aureus using the agar diffusion test. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Abdou Tchoukoua
- Département de Chimie Organique, Université de Yaoundé 1, Yaoundé, Cameroun
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
| | | | - Shota Uesugi
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate, Japan
| | - Ken-Ichi Kimura
- The United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate, Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai, Miyagi, Japan
| | | | - Takuya Koseki
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan
| | - Yoshihito Shiono
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Yamagata, Japan.
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Ren Z, Huang C, Momma H, Cui Y, Sugiyama S, Niu K, Nagatomi R. The consumption of fish cooked by different methods was related to the risk of hyperuricemia in Japanese adults: A 3-year follow-up study. Nutr Metab Cardiovasc Dis 2016; 26:778-785. [PMID: 27345758 DOI: 10.1016/j.numecd.2016.05.009] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 05/10/2016] [Accepted: 05/20/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND AIMS Fish consumption is a recognized risk factor for elevated serum uric acid (UA) levels, hyperuricemia, and gout. However, the relationship between the consumption of fish cooked by different methods and the risk of hyperuricemia is unclear. Therefore, we aimed to investigate the relationship between the consumption of fish cooked by different methods and the risk of hyperuricemia in Japanese adults. METHODS AND RESULTS A 3-year follow-up study was conducted with 424 Japanese adults aged 29-74 years. Fish consumption was assessed using a validated self-administered dietary history questionnaire, and hyperuricemia was defined as serum UA ≥7 mg/dL in men and ≥6 mg/dL in women or the use of any anti-gout treatment. During the 3-year follow-up period, we documented 30 newly diagnosed cases of hyperuricemia. After adjusting for potential confounders, multivariate logistic regressions analysis revealed a significant positive relationship between the risk of hyperuricemia and raw (sashimi and sushi) or roasted fish consumption, but not boiled or fried fish consumption. The odds ratios (95% CI) for hyperuricemia with increasing raw fish consumption were 1.00 (reference), 2.51 (0.85, 7.39), and 3.46 (1.07, 11.14) (P for trend: 0.036). Similarly, the odds ratios (95% CI) with increasing roasted fish consumption were 1.00 (reference), 3.00 (0.75, 11.89), and 5.17 (1.30, 20.62) (P for trend: 0.018). CONCLUSION This 3-year follow-up study showed that the consumption of raw or roasted fish, but not boiled or fried fish, was related with a higher risk of hyperuricemia in Japanese adults.
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Affiliation(s)
- Z Ren
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - C Huang
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan
| | - H Momma
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan
| | - Y Cui
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - S Sugiyama
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - K Niu
- Department of Epidemiology, School of Public Health, Tianjin Medical University, 300070 Tianjin, China
| | - R Nagatomi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan; Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan.
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Abstract
The reaction of 2,5-bis(silyl)thiophenes withmCPBA gave the corresponding 1,1-dioxides in good yields. The kinetics of the reactions and structures were discussed.
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Affiliation(s)
- Toshiyuki Masuda
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Yusuke Inagaki
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hiroyuki Momma
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai 980-8578
- Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules
- Graduate School of Science
- Tohoku University
- Sendai 980-8578
- Japan
| | - Wataru Setaka
- Division of Applied Chemistry
- Faculty of Urban Environmental Sciences
- Tokyo Metropolitan University
- Hachioji
- Japan
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Huang C, Tomata Y, Kakizaki M, Sugawara Y, Hozawa A, Momma H, Tsuji I, Nagatomi R. High circulating adiponectin levels predict decreased muscle strength among older adults aged 70 years and over: A prospective cohort study. Nutr Metab Cardiovasc Dis 2015; 25:594-601. [PMID: 25921841 DOI: 10.1016/j.numecd.2015.03.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/13/2015] [Accepted: 03/17/2015] [Indexed: 11/25/2022]
Abstract
BACKGROUND AND AIMS Population-based researches indicate that circulating adiponectin is inversely associated with muscle strength. However, interpretation of the findings has been limited by the use of a cross-sectional design. This study aimed to examine the prospective relationship between baseline circulating adiponectin concentration and change in muscular function-related physical performance in older adults. METHODS AND RESULTS A 1-year prospective cohort study of Japanese community-dwelling elderly was conducted between 2002 and 2003. Four hundred thirty-four older persons participated in the measurements of physical function, including leg extension power, functional reach, timed up-and-go test, and 10-m maximum walking speed, at baseline and follow-up. After adjustment for potential covariates, higher serum adiponectin concentration was found to be significantly associated with poorer physical performance at baseline (leg extension power [watt], P < 0.001; functional reach [cm], P < 0.001; log timed up-and-go test, P = 0.007; log 10-m maximum walking speed, P < 0.001). The results of the prospective analysis by analysis of covariance indicated that the elderly with higher serum adiponectin concentrations (tertiles) at baseline tended to have a decreased performance in leg extension power (means [95% confidence interval]: lowest, -105 [-125, -85.7]; middle, -117 [-135, -97.8]; highest, -140 [-160, -120], watt, P for trend = 0.021) and timed up-and-go test (lowest, -0.08 [-0.28, -0.12]; middle, -0.10 [-0.29, 0.10]; highest, 0.28 [0.07, 0.48], s, P for trend = 0.019), but not two other functioning. CONCLUSION High circulating adiponectin concentration may be an indicator of decreased physical performance, especially muscle strength, in older adults.
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Affiliation(s)
- C Huang
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan.
| | - Y Tomata
- Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - M Kakizaki
- Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - Y Sugawara
- Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - A Hozawa
- Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 980-8575 Sendai, Japan
| | - H Momma
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan
| | - I Tsuji
- Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - R Nagatomi
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan.
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Huang C, Niu K, Momma H, Kobayashi Y, Guan L, Chujo M, Otomo A, Cui Y, Nagatomi R. Breakfast consumption frequency is associated with grip strength in a population of healthy Japanese adults. Nutr Metab Cardiovasc Dis 2014; 24:648-655. [PMID: 24598601 DOI: 10.1016/j.numecd.2013.12.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/18/2013] [Accepted: 12/30/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND AIMS Several studies have reported that regular consumption of breakfast is associated with health benefits. However, only a few studies have examined the association between frequency of breakfast consumption and muscular function. Therefore, this study aims to investigate the association between frequency of breakfast consumption and muscle strength among apparently healthy Japanese adults. METHODS AND RESULTS A cross-sectional study design was used. Between 2008 and 2011 in Sendai, Japan, 1415 Japanese adult employees (1069 men and 346 women) aged between 19 and 83 years participated in the study. Grip strength, as measured by a handheld digital dynamometer, was used as an indicator of muscle strength. Frequency of breakfast consumption during the previous month was assessed using a brief self-administered dietary history questionnaire, and the results were divided into three categories for analysis: low (≤2 days week⁻¹), middle (3-5 days week⁻¹) and high (≥6 days week⁻¹). Multivariate analysis was performed using analysis of covariance, with covariates mainly including socio-demographic, lifestyle-related and health-related factors. After adjusting for several potential confounders, grip strength was shown to be positively associated with breakfast consumption frequency (geometric means, 95% confidence interval (CI): low frequency, 36.2 (35.7-36.8) kg; middle frequency, 36.7 (36.0-37.5) kg; high frequency, 37.0 (36.6-37.5) kg; P for trend = 0.03). Grip strength per kilogramme body weight (kg kg⁻¹) was also positively associated with frequency of breakfast consumption (P for trend = 0.01). CONCLUSIONS This cross-sectional study reveals a positive association between breakfast consumption frequency and muscle strength in apparently healthy adults.
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Affiliation(s)
- C Huang
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - K Niu
- Department of Epidemiology, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, 300070 Tianjin, China
| | - H Momma
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan
| | - Y Kobayashi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - L Guan
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - M Chujo
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - A Otomo
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - Y Cui
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan
| | - R Nagatomi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 980-8575 Sendai, Japan; Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 980-8575 Sendai, Japan.
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Huang C, Niu K, Momma H, Kobayashi Y, Guan L, Nagatomi R. Inverse association between circulating adiponectin levels and skeletal muscle strength in Japanese men and women. Nutr Metab Cardiovasc Dis 2014; 24:42-49. [PMID: 23786825 DOI: 10.1016/j.numecd.2013.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 03/19/2013] [Accepted: 03/19/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND AND AIMS Increased levels of circulating adiponectin in the elderly cause a negative impact on physical function and health status, which suggests that circulating adiponectin may be related to skeletal muscle function. However, data on the relationship between circulating adiponectin levels and skeletal muscle function is limited. Our objective was to investigate the association between serum adiponectin levels and muscle strength in adults. METHODS AND RESULTS This cross-sectional study is a part of the Oroshisho Study of adult employees in Japan from 2008 to 2011. In our study, we used data gathered in 2008-2010 that had included serum adiponectin measurements (n = 1378; age, 19-83 years). From this population, 1259 subjects were evaluated for grip strength (949 men, 310 women), and 965 subjects were evaluated for leg extension power (716 men, 249 women). Multivariate linear regression analyses showed that adiponectin was associated significantly and negatively with both grip strength (β and standard error [SE]: men, -0.09 [0.01], p = 0.010; women, -0.20 [0.03], kg, p = 0.002) and leg extension power (men, -0.09 [0.02], p = 0.014; women, -0.14 [0.07], W, p = 0.032) after adjusting for age, physical activity, nutrient intake, depressive symptoms, metabolic syndrome, C-reactive protein, body mass index, and other lifestyle-related potential confounders. CONCLUSION This population-based cross-sectional study indicates an inverse association between serum adiponectin levels and muscle strength in adults. Further studies are necessary to confirm this association and to clarify causality.
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Affiliation(s)
- C Huang
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - K Niu
- Department of Epidemiology, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, 300070 Tianjin, People's Republic of China
| | - H Momma
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Y Kobayashi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - L Guan
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - R Nagatomi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan; Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
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Momma H, Niu K, Kobayashi Y, Guan L, Sato M, Guo H, Chujo M, Otomo A, Yufei C, Tadaura H, Saito T, Mori T, Miyata T, Nagatomi R. Skin advanced glycation end-product accumulation is negatively associated with calcaneal osteo-sono assessment index among non-diabetic adult Japanese men. Osteoporos Int 2012; 23:1673-81. [PMID: 21901479 PMCID: PMC3353116 DOI: 10.1007/s00198-011-1753-4] [Citation(s) in RCA: 14] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Accepted: 08/10/2011] [Indexed: 02/06/2023]
Abstract
UNLABELLED This study aims to determine the relationship between advanced glycation end-product (AGE) accumulation in skin tissue and bone strength, assessed by quantitative ultrasound, among healthy adult Japanese men. The results of the study suggest that men with higher AGE accumulation in skin tissue have a lower osteo-sono assessment index. INTRODUCTION AGE accumulate in bone collagen with age and diabetes and decrease the mechanical properties of bone. Although increased AGE levels are associated with fractures among diabetic patients and elderly women, it is unclear whether a relationship between increased AGE levels and bone strength is present in apparently healthy adult males. The aim of this study was to determine the relationship between AGE accumulation in tissue and the mechanical properties of bone among adult Japanese men, using quantitative ultrasound as a surrogate measure of the latter. METHODS Skin autofluorescence (AF), which is a noninvasive method for measuring tissue AGEs, and osteo-sono assessment index (OSI), which is determined by quantitative ultrasound, were measured in 193 adult Japanese men (median age 43 years; interquartile range 37.0-55.0 years). RESULTS Adjusted for age, BMI, calcium intake, physical activity, smoking status, and education level, log-transformed skin AF had a negative association with log-transformed OSI (β = -0.218, P < 0.01). Adjusted geometric means (95% CI) for OSI across the tertiles of skin AF were 2.81 (2.75-2.87) for the lowest tertile, 2.81 (2.74-2.87) for the middle tertile, and 2.66 (2.61-2.73) for the highest tertile; thus, OSI for the highest skin AF appeared to be 5.0% lower than that for the lowest and middle skin AF tertiles (P < 0.01). CONCLUSION Among apparently healthy adult Japanese men, those with higher skin AF had a lower OSI, indicating a relationship between AGE accumulation and bone strength. A long-term prospective study is required to clarify the causality.
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Affiliation(s)
- H. Momma
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575 Japan
| | - K. Niu
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575 Japan
| | - Y. Kobayashi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - L. Guan
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M. Sato
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - H. Guo
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M. Chujo
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - A. Otomo
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - C. Yufei
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - H. Tadaura
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - T. Saito
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575 Japan
| | - T. Mori
- United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - T. Miyata
- United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - R. Nagatomi
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575 Japan
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Kobayashi Y, Niu K, Guan L, Momma H, Guo H, Cui Y, Nagatomi R. Oral health behavior and metabolic syndrome and its components in adults. J Dent Res 2012; 91:479-84. [PMID: 22378694 DOI: 10.1177/0022034512440707] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Inflammation has been strongly related to metabolic syndrome (MetS). Periodontal disease is the most common chronic infection in adults. We investigated a cross-sectional (n = 925) and 3-year longitudinal (n = 685) relationship between the daily frequency of toothbrushing and MetS. In the cross-sectional analysis, the prevalence of MetS was 15.7%. After adjustment for potential confounding factors (including all lifestyle factors), the odds ratios (95% confidence interval [CI]) of having MetS in those who brushed 2 times/day and ≥ 3 times/day were 0.71 (0.48-1.05) and 0.47 (0.24-0.92), respectively, as compared with ratios in those with a toothbrushing frequency of ≤ 1 time/day. Increasing toothbrushing frequency tended to relate inversely to hypertriglyceridemia and high-sensitivity C-reactive protein. In the longitudinal analysis, 99 participants were newly diagnosed with MetS. The adjusted odds ratios (95% CI) of the MetS in participants who brushed 2 times/day and ≥ 3 times/day as compared with participants who brushed ≤ 1 time/day were 0.80 (0.49-1.31) and 0.43 (0.19-0.97), respectively. The frequency of toothbrushing was related inversely only to hypertriglyceridemia, consistent with the cross-sectional analysis. This study found that more frequent toothbrushing is related to a lower prevalence and incidence of MetS. These results suggest that more frequent toothbrushing may contribute to the prevention of MetS due to the inflammation/triglyceride pathway.
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Affiliation(s)
- Y Kobayashi
- Division of Biomedical Engineering for Health & Welfare, Tohoku University Graduate School of Biomedical Engineering, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
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Ishizaki M, Aoyama K, Uno C, Kobayashi S, Asano H, Takahashi H, Momma H, Sekino H, Shishito S, Saito H. [Methylguanidine (MG) movement of serum and urine in chronic renal failure (author's transl)]. Nihon Jinzo Gakkai Shi 1979; 21:175-84. [PMID: 470228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Ishizaki M, Takahashi H, Momma H, Aoyama K, Ohsawa C, Sekino H. [Ulnar nerve excitability in chronic renal failure (author's transl)]. Nihon Jinzo Gakkai Shi 1977; 19:753-60. [PMID: 599733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Takahashi H, Momma H, Ishizaki M, Sekino H, Takahashi K. [Changes in peripheral blood T-cells and B-cells in chronic kidney failure]. Nihon Jinzo Gakkai Shi 1975; 17:867-78. [PMID: 1087940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Momma H, Nakamura W, Arakawa S, Eto H. [Effect of x-rays on the serotonin content of the blood in the mouse. II. Protection by screening of the exteriorized spleen]. C R Seances Soc Biol Fil 1967; 161:1177-80. [PMID: 4229296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Nakamura W, Kobayashi S, Kojima E, Momma H, Nishimoto Y, Nagasawa H, Eto K, Eto H. [Change of biological indicators for the growth of spontaneous mammary cancer in the mouse. I. Water content of the blood, number of platelets and serotonin content of the blood]. C R Seances Soc Biol Fil 1967; 161:1184-8. [PMID: 4229298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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