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Kawamura J, Tanaka T, Kanno S, Osawa K, Okabayashi K, Hirano H, Shirobe M, Nagatani M, Son BK, Lyu W, Iijima K. Relationship between a gum-chewing routine and oral, physical, and cognitive functions of community-dwelling older adults: A Kashiwa cohort study. Geriatr Gerontol Int 2024; 24:68-74. [PMID: 38054384 DOI: 10.1111/ggi.14757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 09/21/2023] [Accepted: 11/15/2023] [Indexed: 12/07/2023]
Abstract
AIM As associations between oral function and general health have been reported in community-dwelling older adults, easily implementable preventive measures are urgently required. We focused on the health benefits of gum chewing, as no studies have been carried out on the impact of gum-chewing routines on the health of older adults. This cross-sectional study aimed to determine whether the gum-chewing routine is associated with oral, physical and cognitive functions in community-dwelling older adults. METHODS This study included 1617 community-dwelling older participants in a health survey carried out in 2021. The gum-chewing routine and weekly chewing time were assessed using a self-administered questionnaire. The outcome measures, including actual measurements of oral function, physical function, cognitive function, dietary intake and lifestyle, were evaluated using self-administered questionnaires or health surveys. RESULTS We analyzed 1474 (mean age 76.1 ± 5.8 years, 45% women) participants for whom all data were not missing, and 14% of them had a gum-chewing routine for more than 30 min weekly. Oral functions were significantly higher in older adults with a gum-chewing routine, and there were substantially fewer participants with oral frailty (adjusted odds ratio 0.581, 95% confidence interval 0.340-0.993). Additionally, cognitive and physical functions, including grip strength, were significantly higher in the gum-chewing routine group. CONCLUSIONS Community-dwelling older adults with a gum-chewing routine have higher oral, physical and cognitive functions. These findings indicate that a gum-chewing routine might contribute to maintaining oral function and preventing frailty. Geriatr Gerontol Int 2024; 24: 68-74.
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Affiliation(s)
- Jun Kawamura
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
- Central Research Laboratory, LOTTE CO., LTD., Tokyo, Japan
| | - Tomoki Tanaka
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
| | - Susumu Kanno
- Central Research Laboratory, LOTTE CO., LTD., Tokyo, Japan
| | - Kenji Osawa
- Central Research Laboratory, LOTTE CO., LTD., Tokyo, Japan
| | | | - Hirohiko Hirano
- Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Maki Shirobe
- Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Miyuki Nagatani
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
| | - Bo-Kyung Son
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
- Institute for Future Initiatives, The University of Tokyo, Tokyo, Japan
| | - Weida Lyu
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
- Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Katsuya Iijima
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan
- Institute for Future Initiatives, The University of Tokyo, Tokyo, Japan
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2
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Hamada Y, Nagayama C, Fujihira K, Tataka Y, Hiratsu A, Kamemoto K, Shimo K, Kanno S, Osawa K, Miyashita M. Gum chewing while walking increases walking distance and energy expenditure: A randomized, single-blind, controlled, cross-over study. J Exerc Sci Fit 2021; 19:189-194. [PMID: 34135975 PMCID: PMC8164030 DOI: 10.1016/j.jesf.2021.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 04/12/2021] [Accepted: 04/18/2021] [Indexed: 11/24/2022] Open
Abstract
Background/objective Gum chewing while walking increases walking distance and energy expenditure in middle-aged male and female individuals. This study aimed to examine the effects of gum chewing while walking on walking distance and energy metabolism in male and female individuals of various age groups. Methods Fifty participants (25 male and 25 female individuals) aged 22-69 years completed two trials in a random order. In the gum trial, participants walked at a natural pace for 15 min while chewing two gum pellets (1.5 g, 3 kcal per pellet) following a 50-min rest period. In the tablet trial, participants rested for 50 min before walking, and the participants then walked at a natural pace for 15 min after ingesting two pellets of tablet containing the same ingredients with the exception of the gum base. The walking distance, step count, walking speed, stride, heart rate, energy expenditure, and respiratory exchange ratio were measured. Results Walking distance, step count, walking speed, heart rate, and energy expenditure during walking were significantly higher in the gum trial than in the tablet trial. In participants aged ≥40 years, walking distance, walking speed, stride, heart rate, and energy expenditure during walking were significantly increased during the gum trial compared with those during the tablet trial. Conclusion The study findings demonstrated that gum chewing while walking increased walking distance and energy expenditure in both male and female individuals.
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Affiliation(s)
- Yuka Hamada
- Waseda Institute for Sport Sciences, Waseda University, Saitama, Japan
| | - Chihiro Nagayama
- Graduate School of Sport Sciences, Waseda University, Saitama, Japan
| | - Kyoko Fujihira
- Graduate School of Sport Sciences, Waseda University, Saitama, Japan
| | - Yusei Tataka
- Graduate School of Sport Sciences, Waseda University, Saitama, Japan
| | - Ayano Hiratsu
- Graduate School of Sport Sciences, Waseda University, Saitama, Japan
| | - Kayoko Kamemoto
- Waseda Institute for Sport Sciences, Waseda University, Saitama, Japan
| | - Kanako Shimo
- Central Laboratory, Lotte Co., Ltd., Saitama, Japan
| | - Susumu Kanno
- Central Laboratory, Lotte Co., Ltd., Saitama, Japan
| | - Kenji Osawa
- Central Laboratory, Lotte Co., Ltd., Saitama, Japan
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Kanno S, Shimo K, Ando T, Hamada Y, Miyashita M, Osawa K. Gum chewing while walking increases fat oxidation and energy expenditure. J Phys Ther Sci 2019; 31:435-439. [PMID: 31164781 PMCID: PMC6511506 DOI: 10.1589/jpts.31.435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/01/2019] [Indexed: 01/25/2023] Open
Abstract
[Purpose] Although gum chewing while walking has been reported to increase walking speed
and heart rate, its effect on energy expenditure remains unclear. The purpose of the
present study was to investigate the effects of gum chewing while walking on fat
oxidation, energy expenditure, and different walking parameters. [Participants and
Methods] This randomized crossover study included 10 males and 5 females who walked for
15 min at their own pace while chewing 2 pieces of gum in the gum trial or while eating 2
tablets in the control trial. A wearable metabolic system, heart rate monitor, and
pedometer measured fat oxidation, energy expenditure, heart rate, step count, and walking
distance. Walking speed and stride length were also calculated. [Results] The energy
expenditure, fat oxidation and heart rate were significantly higher during the gum trial
than during the control trial. Significant increases were observed in the step count,
walking distance, and walking speed but not in the stride length. [Conclusion] Our results
suggest that gum chewing affects sympathetic nervous system activity and walking rhythm
with a consequent improvement in the health-related effects of walking, which in turn
helps to maintain weight. These findings may play a role in preventing the gradual
age-related weight gain that predisposes to obesity.
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Affiliation(s)
- Susumu Kanno
- LOTTE Co., Ltd. Central Laboratory: 1-1 Numakage 3-chome, Minami, Saitama 336-8601, Japan
| | - Kanako Shimo
- LOTTE Co., Ltd. Central Laboratory: 1-1 Numakage 3-chome, Minami, Saitama 336-8601, Japan
| | - Tomonori Ando
- LOTTE Co., Ltd. Central Laboratory: 1-1 Numakage 3-chome, Minami, Saitama 336-8601, Japan
| | - Yuka Hamada
- Graduate School of Sport Sciences, Waseda University, Japan.,Japan Society for the Promotion of Science, Japan
| | | | - Kenji Osawa
- LOTTE Co., Ltd. Central Laboratory: 1-1 Numakage 3-chome, Minami, Saitama 336-8601, Japan
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Hamada Y, Yanaoka T, Kashiwabara K, Kurata K, Yamamoto R, Kanno S, Ando T, Miyashita M. The effects of gum chewing while walking on physical and physiological functions. J Phys Ther Sci 2018; 30:625-629. [PMID: 29706720 PMCID: PMC5909016 DOI: 10.1589/jpts.30.625] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 01/25/2018] [Indexed: 11/24/2022] Open
Abstract
[Purpose] This study examined the effects of gum chewing while walking on physical and
physiological functions. [Subjects and Methods] This study enrolled 46 male and female
participants aged 21–69 years. In the experimental trial, participants walked at natural
paces for 15 minutes while chewing two gum pellets after a 1-hour rest period. In the
control trial, participants walked at natural paces for 15 minutes after ingesting powder
containing the same ingredient, except the gum base, as the chewing gum. Heart rates,
walking distances, walking speeds, steps, and energy expenditure were measured. [Results]
Heart rates during walking and heart rate changes (i.e., from at rest to during walking)
significantly increased during the gum trial compared with the control trial. Walking
distance, walking speed, walking heart rate, and heart rate changes in male participants
and walking heart rate and heart rate changes in female participants were significantly
higher during the gum trial than the control trial. In middle-aged and elderly male
participants aged ≥40 years, walking distance, walking speed, steps, and energy
expenditure significantly increased during the gum trial than the control trial.
[Conclusion] Gum chewing while walking measurably affects physical and physiological
functions.
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Affiliation(s)
- Yuka Hamada
- Graduate School of Sport Sciences, Waseda University, Japan.,The Japan Society for the Promotion of Science, Japan
| | - Takuma Yanaoka
- Graduate School of Sport Sciences, Waseda University, Japan.,The Japan Society for the Promotion of Science, Japan
| | | | - Kuran Kurata
- Graduate School of Education, Tokyo Gakugei University, Japan
| | - Ryo Yamamoto
- Graduate School of Sport Sciences, Waseda University, Japan
| | | | | | - Masashi Miyashita
- Faculty of Sport Sciences, Waseda University: 2-579-15 Mikajima, Tokorozawa, Saitama 359-1192, Japan
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Murata K, Motomura Y, Tanaka T, Kanno S, Yano T, Onimaru M, Shimoyama A, Nishio H, Sakai Y, Oh-Hora M, Hara H, Fukase K, Takada H, Masuda S, Ohga S, Yamasaki S, Hara T. Calcineurin inhibitors exacerbate coronary arteritis via the MyD88 signalling pathway in a murine model of Kawasaki disease. Clin Exp Immunol 2017. [PMID: 28640392 DOI: 10.1111/cei.13002] [Citation(s) in RCA: 7] [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] [Indexed: 01/04/2023] Open
Abstract
Calcineurin inhibitors (CNIs) have been used off-label for the treatment of refractory Kawasaki disease (KD). However, it remains unknown whether CNIs show protective effects against the development of coronary artery lesions in KD patients. To investigate the effects of CNIs on coronary arteries and the mechanisms of their actions on coronary arteritis in a mouse model of KD, we performed experiments with FK565, a ligand of nucleotide-binding oligomerization domain-containing protein 1 (NOD1) in wild-type, severe combined immunodeficiency (SCID), caspase-associated recruitment domain 9 (CARD9)-/- and myeloid differentiation primary response gene 88 (MyD88)-/- mice. We also performed in-vitro studies with vascular and monocytic cells and vascular tissues. A histopathological analysis showed that both cyclosporin A and tacrolimus exacerbated the NOD1-mediated coronary arteritis in a dose-dependent manner. Cyclosporin A induced the exacerbation of coronary arteritis in mice only in high doses, while tacrolimus exacerbated it within the therapeutic range in humans. Similar effects were obtained in SCID and CARD9-/- mice but not in MyD88-/- mice. CNIs enhanced the expression of adhesion molecules by endothelial cells and the cytokine secretion by monocytic cells in our KD model. These data indicated that both vascular and monocytic cells were involved in the exacerbation of coronary arteritis. Activation of MyD88-dependent inflammatory signals in both vascular cells and macrophages appears to contribute to their adverse effects. Particular attention should be paid to the development of coronary artery lesions when using CNIs to treat refractory KD.
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Affiliation(s)
- K Murata
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Motomura
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - T Tanaka
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Kanno
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Yano
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan
| | - M Onimaru
- Division of Pathophysiological and Experimental Pathology, Department of Pathology, Kyushu University, Fukuoka, Japan
| | - A Shimoyama
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka, Japan
| | - H Nishio
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M Oh-Hora
- Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - H Hara
- Department of Immunology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - K Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, Osaka, Japan
| | - H Takada
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Masuda
- Department of Pharmacy, Kyushu University Hospital, Fukuoka, Japan
| | - S Ohga
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - S Yamasaki
- Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - T Hara
- Division of Molecular Immunology, Research Center for Infectious Diseases, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.,Fukuoka Children's Hospital, Fukuoka, Japan
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Wang X, Kanno S, Kohagura J, Yoshikawa M, Shima Y, Nakashima Y, Sakamoto M, Oki K, Imai T, Ichimura M, Nagayama Y, Kuwahara D, Mase A. A Novel Frequency-Multiplied Interferometer System with 1-D Horn-Antenna Mixer Array in the GAMMA 10/PDX End Divertor Module. Fusion Science and Technology 2017. [DOI: 10.13182/fst14-877] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- X. Wang
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - S. Kanno
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - J. Kohagura
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - M. Yoshikawa
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - Y. Shima
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - Y. Nakashima
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - M. Sakamoto
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - K. Oki
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - T. Imai
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - M. Ichimura
- University of Tsukuba, Plasma Research Center, Tsukuba, Ibaraki, Japan
| | - Y. Nagayama
- National Institute for Fusion Science, Toki, Gifu, Japan
| | - D. Kuwahara
- Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
| | - A. Mase
- Kyushu University, KASTEC, Kasuga, Fukuoka, Japan
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7
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Yamashita S, Kanno S, Honjo A, Otoki Y, Nakagawa K, Kinoshita M, Miyazawa T. Analysis of Plasmalogen Species in Foodstuffs. Lipids 2016; 51:199-210. [DOI: 10.1007/s11745-015-4112-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/04/2015] [Indexed: 10/22/2022]
Affiliation(s)
- Shinji Yamashita
- ; Department of Food Science; Obihiro University of Agriculture and Veterinary Medicine; Obihiro 080-8555 Japan
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Susumu Kanno
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Ayako Honjo
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Yurika Otoki
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Kiyotaka Nakagawa
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Mikio Kinoshita
- ; Department of Food Science; Obihiro University of Agriculture and Veterinary Medicine; Obihiro 080-8555 Japan
| | - Teruo Miyazawa
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
- ; Food and Biotechnology Innovation Project, New Industry Creation Hatchery Center (NICHe); Tohoku University; Sendai 980-8579 Japan
- ; Food and Health Science Research Unit, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
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8
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Kanno S, Lee S, Harashima T, Kuki T, Kino H, Mushiake H, Yao H, Tanaka T. Multiple optical stimulation to neuron using Si opto-neural probe with multiple optical waveguides and metal-cover for optogenetics. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2013:253-6. [PMID: 24109672 DOI: 10.1109/embc.2013.6609485] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We have developed a Si opt-neural probe with multiple waveguides and metal cover for highly accurate optical stimulation. This neural probe had 16 recording sites, three optical waveguides, and metal cover for suppressing light leakage. We evaluated electrochemical properties of the recording sites, and confirmed that the neural probe had suitable characteristics for neural recording. We also demonstrated the optical stimulation to the neurons expressing ChR2 using our probe. As a result, we succeeded multisite optical stimulation, and observed that no light leakage from the optical waveguides because of the metal cover. From in vivo experiments, we successfully recorded optically modulated local field potential using the fabricated Si neural probe with optical waveguides. Moreover, we applied current source density analysis to the recorded LFPs. As a result, we confirmed that light induced membrane current sink in locally stimulated area. Our Si opto-neural probe with multiple optical waveguides and metal-cover is one of the most versatile tools for optogenetics.
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Yamashita S, Kanno S, Nakagawa K, Kinoshita M, Miyazawa T. Extrinsic plasmalogens suppress neuronal apoptosis in mouse neuroblastoma Neuro-2A cells: importance of plasmalogen molecular species. RSC Adv 2015. [DOI: 10.1039/c5ra00632e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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] Open
Abstract
Plasmalogen, especially those having 22:6, suppressed neuronal apoptosisviadeath receptor and mitochondrial pathways. These mechanisms of action of plasmalogen may be responsible for regulation of membrane functions and second messenger production.
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Affiliation(s)
- Shinji Yamashita
- Department of Food Science
- Obihiro University of Agriculture and Veterinary Medicine
- Obihiro
- Japan
- Food and Biodynamic Chemistry Laboratory
| | - Susumu Kanno
- Food and Biodynamic Chemistry Laboratory
- Graduate School of Agricultural Science
- Tohoku University
- Sendai
- Japan
| | - Kiyotaka Nakagawa
- Food and Biodynamic Chemistry Laboratory
- Graduate School of Agricultural Science
- Tohoku University
- Sendai
- Japan
| | - Mikio Kinoshita
- Department of Food Science
- Obihiro University of Agriculture and Veterinary Medicine
- Obihiro
- Japan
| | - Teruo Miyazawa
- Food and Biodynamic Chemistry Laboratory
- Graduate School of Agricultural Science
- Tohoku University
- Sendai
- Japan
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Yamaguchi K, Okusaka T, Shimizu K, Furuse J, Ito Y, Hanada K, Shimosegawa T, Yamaguchi K, Okusaka T, Shimizu K, Nakaizumi A, Itoi T, Mizuno N, Hatori T, Yamaue Y, Hanada K, Yamaguchi K, Fujii T, Endo W, Egawa S, Yamaue Y, Yokoyama Y, Furuse J, Ohigashi H, Nagaori T, Kanno S, Uesaka K, Okusaka T, Nakamura S, Ito Y, Shibuya K, Nakamura S, Ohguri T, Nagakura H, Okusaka T, Uesaka K, Kihara Y, Ito T, Furuse J, Hanada K, Itoi T, Mizuno N, Isayama H, Kanno A, Majima Y. EBM-based Clinical Guidelines for Pancreatic Cancer (2013) Issued by the Japan Pancreas Society: A Synopsis. Jpn J Clin Oncol 2014; 44:883-8. [DOI: 10.1093/jjco/hyu127] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Suzuki S, Komemushi A, Sano A, Kariya S, Kanno S, Nakatani M, Yoshida R, Kono Y, Tanigawa N. Short term efficacy and safety of balloon-occluded retrograde transvenous obliteration of portosystemic shunt in patients with hepatic encephalopathy. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.332] [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: 11/24/2022] Open
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12
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Takeshita H, Nagai T, Sagi M, Chiba S, Kanno S, Takada M, Mukai T. Forensic identification using multiple lot numbers of an implanted device. Med Sci Law 2014; 54:51-53. [PMID: 24052003 DOI: 10.1177/0025802413498860] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report a case in which identification of a deceased individual was established using multiple lot numbers printed on a body implantable device. Autopsy of an unknown woman revealed an intramedullary nail inserted within her right femur. The device manufacturer was identified from the configuration of the intramedullary nail, and the "use history" was traced from lot numbers printed on the device's multiple parts. The deceased individual was thus identified as a woman who had attempted suicide by jumping from a height about a year previously and had been transported to a hospital and undergone surgery that included implantation of the intramedullary nail. The main factor contributing to the rapid identification was the manufacturer's and distributor's record of the use history (traceability) of the product, because of their accountability for purposes of quality control. A second contributing factor was multiple lot numbers, resulting in extremely low probability of the same combination of lot numbers being present in multiple individuals. This case confirmed the utility of multiple lot numbers of body implantable devices in forensic identification.
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Affiliation(s)
- H Takeshita
- Department of Legal Medicine, St. Marianna University School of Medicine, Japan
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Harima Y, Ikeda K, Utsunomiya K, Komemushi A, Kanno S, Shiga T, Tanigawa N. Prediction of Outcome for the Patients With Advanced Cervical Cancers After Chemoradiation Therapy Using MicroRNA Analysis. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Harima Y, Ikeda K, Utsunomiya K, Komemushi A, Kanno S, Tanaka K, Shiga T, Sawada S. Apolipoprotein C-II is a Potential Serum Biomarker as a Prognostic Factor of Patients With Locally Advanced Cervical Cancer After Chemoradiation Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.067] [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: 11/17/2022]
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15
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Suzuki K, Kanno S, Wakasugi H, Itoh M, Fujii K, Goto A. A Case Report of Advanced Pancreatic Neuroendocrine Tumor Treated with Chemotherapy for Cisplatin Containing Resimen Followed by Everolimus in Combination with Octreotide LAR. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32456-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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16
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Kanno S, Saito M, Hayashi A, Uchiyama M, Hiraoka K, Nishio Y, Hisanaga K, Mori E. Counting-backward test for executive function in idiopathic normal pressure hydrocephalus. Acta Neurol Scand 2012; 126:279-86. [PMID: 22288385 DOI: 10.1111/j.1600-0404.2012.01644.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2012] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The aim of this study was to develop and validate a bedside test for executive function in patients with idiopathic normal pressure hydrocephalus (INPH). MATERIALS AND METHODS Twenty consecutive patients with INPH and 20 patients with Alzheimer's disease (AD) were enrolled in this study. We developed the counting-backward test for evaluating executive function in patients with INPH. Two indices that are considered to be reflective of the attention deficits and response suppression underlying executive dysfunction in INPH were calculated: the first-error score and the reverse-effect index. Performance on both the counting-backward test and standard neuropsychological tests for executive function was assessed in INPH and AD patients. RESULTS The first-error score, reverse-effect index and the scores from the standard neuropsychological tests for executive function were significantly lower for individuals in the INPH group than in the AD group. The two indices for the counting-backward test in the INPH group were strongly correlated with the total scores for Frontal Assessment Battery and Phonemic Verbal Fluency. The first-error score was also significantly correlated with the error rate of the Stroop colour-word test and the score of the go/no-go test. In addition, we found that the first-error score highly distinguished patients with INPH from those with AD using these tests. CONCLUSION The counting-backward test is useful for evaluating executive dysfunction in INPH and for differentiating between INPH and AD patients. In particular, the first-error score may reflect deficits in the response suppression related to executive dysfunction in INPH.
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Affiliation(s)
- S. Kanno
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - M. Saito
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - A. Hayashi
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - M. Uchiyama
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - K. Hiraoka
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - Y. Nishio
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - K. Hisanaga
- Department of Neurology; Miyagi National Hospital; Watari; Miyagi; Japan
| | - E. Mori
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
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17
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Hirose A, Yamawaki M, Kanno S, Igarashi S, Sugita R, Ohmae Y, Tanoi K, Nakanishi TM. Development of a 14C detectable real-time radioisotope imaging system for plants under intermittent light environment. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-2130-2] [Citation(s) in RCA: 5] [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] [Indexed: 10/27/2022]
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18
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Togano Y, Yamada Y, Iwasa N, Yamada K, Motobayashi T, Aoi N, Baba H, Bishop S, Cai X, Doornenbal P, Fang D, Furukawa T, Ieki K, Kawabata T, Kanno S, Kobayashi N, Kondo Y, Kuboki T, Kume N, Kurita K, Kurokawa M, Ma YG, Matsuo Y, Murakami H, Matsushita M, Nakamura T, Okada K, Ota S, Satou Y, Shimoura S, Shioda R, Tanaka KN, Takeuchi S, Tian W, Wang H, Wang J, Yoneda K. Hindered proton collectivity in 16(28)S12: possible magic number at Z=16. Phys Rev Lett 2012; 108:222501. [PMID: 23003590 DOI: 10.1103/physrevlett.108.222501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Indexed: 06/01/2023]
Abstract
The reduced transition probability B(E2;0(gs)(+)→2(1)(+)) for (28)S was obtained experimentally using Coulomb excitation at 53 MeV/nucleon. The resultant B(E2) value 181(31) e(2)fm(4) is smaller than the expectation based on empirical B(E2) systematics. The double ratio |M(n)/M(p)|/(N/Z) of the 0(gs)(+)→2(1)(+) transition in (28)S was determined to be 1.9(2) by evaluating the M(n) value from the known B(E2) value of the mirror nucleus (28)Mg, showing the hindrance of proton collectivity relative to that of neutrons. These results indicate the emergence of the magic number Z=16 in the |T(z)|=2 nucleus (28)S.
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Affiliation(s)
- Y Togano
- RIKEN Nishina Center, Saitama 351-0198, Japan
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19
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Yokoyama H, Kanno S, Takahashi S, Yamada D, Honjo J, Saito K, Sone H, Haneda M. Risks for glomerular filtration rate decline in association with progression of albuminuria in type 2 diabetes. Nephrol Dial Transplant 2011; 26:2924-30. [DOI: 10.1093/ndt/gfq774] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [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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20
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Doornenbal P, Scheit H, Aoi N, Takeuchi S, Li K, Takeshita E, Wang H, Baba H, Deguchi S, Fukuda N, Geissel H, Gernhäuser R, Gibelin J, Hachiuma I, Hara Y, Hinke C, Inabe N, Itahashi K, Itoh S, Kameda D, Kanno S, Kawada Y, Kobayashi N, Kondo Y, Krücken R, Kubo T, Kuboki T, Kusaka K, Lantz M, Michimasa S, Motobayashi T, Nakamura T, Nakao T, Namihira K, Nishimura S, Ohnishi T, Ohtake M, Orr NA, Otsu H, Ozeki K, Satou Y, Shimoura S, Sumikama T, Takechi M, Takeda H, Tanaka KN, Tanaka K, Togano Y, Winkler M, Yanagisawa Y, Yoneda K, Yoshida A, Yoshida K, Sakurai H. Spectroscopy of 32Ne and the "Island of Inversion". Phys Rev Lett 2009; 103:032501. [PMID: 19659270 DOI: 10.1103/physrevlett.103.032501] [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] [Received: 05/15/2009] [Indexed: 05/28/2023]
Abstract
We report on the first spectroscopic study of the N=22 nucleus 32Ne at the newly completed RIKEN Radioactive Ion Beam Factory. A single gamma-ray line with an energy of 722(9) keV was observed in both inelastic scattering of a 226 MeV/u 32Ne beam on a carbon target and proton removal from 33Na at 245 MeV/u. This transition is assigned to the deexcitation of the first Jpi=2+ state in 32Ne to the 0+ ground state. Interpreted through comparison with state-of-the-art shell-model calculations, the low excitation energy demonstrates that the "island of inversion" extends to at least N=22 for the Ne isotopes.
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Affiliation(s)
- P Doornenbal
- RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
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21
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Aoi N, Takeshita E, Suzuki H, Takeuchi S, Ota S, Baba H, Bishop S, Fukui T, Hashimoto Y, Ong HJ, Ideguchi E, Ieki K, Imai N, Ishihara M, Iwasaki H, Kanno S, Kondo Y, Kubo T, Kurita K, Kusaka K, Minemura T, Motobayashi T, Nakabayashi T, Nakamura T, Nakao T, Niikura M, Okumura T, Ohnishi TK, Sakurai H, Shimoura S, Sugo R, Suzuki D, Suzuki MK, Tamaki M, Tanaka K, Togano Y, Yamada K. Development of large deformation in 62Cr. Phys Rev Lett 2009; 102:012502. [PMID: 19257184 DOI: 10.1103/physrevlett.102.012502] [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] [Received: 07/03/2008] [Indexed: 05/27/2023]
Abstract
The structure of neutron-rich isotopes 60Cr and 62Cr was studied via proton inelastic scattering in inverse kinematics. The deformation lengths (delta) for 60Cr and 62Cr were extracted as 1.12(16) and 1.36(14) fm, respectively, providing evidence for enhanced collectivity in these nuclei. An excited state at 1180(10) keV in 62Cr was identified for the first time. We adopted 4;{+} as its spin and parity, leading to the rapid increase of the Ex(4;{+})/E_{x}(2;{+}) ratio, which indicates the development of large deformation in 62Cr near N=40. Importance of the admixture of the gd-shell component above N=40 is also discussed by comparing with a modern shell model calculation.
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Affiliation(s)
- N Aoi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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22
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Nakao A, Toyokawa H, Abe M, Kohmoto J, Tsung A, Kaizu T, Kanno S, Thomson A, Billiar T, McCurry K, Murase N. 362: Recipient Hyperbilirubinemia Protects Rat Cardiac Grafts. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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23
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Abstract
AIMS Interaction of vascular and metabolic factors appears to contribute to the pathogenesis of diabetic neuropathy. The aim of the study was to assess the impact of arterial stiffening and thickness on diabetic neuropathy in Type 2 diabetes. METHODS In 294 patients with Type 2 diabetes, neuropathy was assessed by four components: the presence of neuropathic symptoms, the absence of ankle tendon reflexes, perception of vibration scores and heart rate variation. We measured intima-media thickness (IMT) of carotid arteries to assess arterial thickening, and brachial-ankle pulse-wave velocity (PWV) and brachial pulse pressure (PP) which reflect arterial stiffening. RESULTS Diabetic neuropathy, defined as > or = two of the four components, was significantly associated with age, duration, glycated haemoglobin (HbA(1c)), systolic blood pressure, diastolic blood pressure, PP, hypertension, retinopathy, urinary albumin excretion rate, nephropathy stages, PWV and IMT. PWV and PP were significantly associated with neuropathy independent of conventional cardiovascular risk factors. Multiple logistic regression analysis revealed that PWV, retinopathy, age, and HbA(1c), were significant independent determinants of neuropathy. CONCLUSIONS The present cross-sectional study indicates that markers for vascular wall properties such as PWV, IMT and PP are significantly associated with diabetic neuropathy. PWV and PP are significant determinants of neuropathy independent of conventional cardiovascular risk factors. Multifactorial intervention to inhibit progression of the atherosclerotic process may slow progression of neuropathy.
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Affiliation(s)
- H Yokoyama
- Jiyugaoka Medical Clinic, Internal Medicine, Jiyugaoka, Obihiro, Japan.
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24
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Yokoyama H, Kuramitsu M, Kanno S, Tada J, Yokota Y, Kamikawa F. Relationship between metabolic syndrome components and vascular properties in Japanese type 2 diabetic patients without cardiovascular disease or nephropathy. Diabetes Res Clin Pract 2007; 75:200-6. [PMID: 16860430 DOI: 10.1016/j.diabres.2006.06.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [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: 09/26/2005] [Revised: 05/08/2006] [Accepted: 06/06/2006] [Indexed: 10/24/2022]
Abstract
To investigate the effect of metabolic syndrome (MS) components on early atherosclerosis markers, i.e., urinary albumin excretion rate (UAE), pulse wave velocity (PWV), and carotid intima-media thickness (IMT), we studied 536 Japanese patients with type 2 diabetes without cardiovascular disease or nephropathy. The MS definition by ATP III was employed. UAE, PWV, and IMT increased significantly with increasing the number of components even before fulfilling the diagnosis of MS. UAE was significantly influenced by high blood pressure, high triglycerides, and low HDL cholesterol. PWV was significantly increased by high blood pressure. IMT was significantly increased by high blood pressure and abdominal obesity. Multiple regression analysis, including MS components and putative risk factors, indicated that the number of MS components, age and glycosylated HbA1C were independent determinants of UAE, PWV, and IMT. LDL cholesterol and male gender were independent determinants of IMT. In conclusion, UAE, PWV, and IMT increased according to increasing the number of MS in type 2 diabetic patients without cardiovascular disease or diabetic nephropathy. The current observation considering the modifiable factors may help to identify patients who are at high risk of experiencing cardiovascular disease.
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Affiliation(s)
- H Yokoyama
- Jiyugaoka Medical Clinic, Internal Medicine, Jiyugaoka 1-1-10, Obihiro 080-0848, Japan.
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25
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Suenami K, Lim LW, Takeuchi T, Sasajima Y, Sato K, Takekoshi Y, Kanno S. On-line sample extraction and enrichment of non-steroidal anti-inflammatory drugs by pre-column in capillary liquid chromatography mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 846:176-83. [PMID: 16971191 DOI: 10.1016/j.jchromb.2006.08.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2006] [Revised: 08/08/2006] [Accepted: 08/28/2006] [Indexed: 10/24/2022]
Abstract
A rapid and sensitive analytical method has been developed for the simultaneous determination of 16 non-steroidal anti-inflammatory drugs (NSAIDs) in human plasma by capillary liquid chromatography (LC) and quadrupole mass spectrometry with electrospray ionization operated in the negative ion mode. The sample clean-up and enrichment on a pre-column were accomplished on-line to improve the sensitivity. This method greatly reduced sample preparation time and sample volume compared with off-line sample extraction methods and conventional LC methods, respectively. The recoveries of NSAIDs from human plasma were 56.7-96.9%. The total analytical time for a single analytical run was approximately 15 min. The detection limits of NSAIDs were 0.001-0.075 microg ml(-1) using a selected ion monitoring mode.
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Affiliation(s)
- Koichi Suenami
- Department of Chemistry, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
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26
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Miura M, Satoh S, Tada H, Saito M, Kagaya H, Inoue K, Sagae Y, Kanno S, Ishikawa M, Habuchi T, Suzuki T. Influence of ABCB1 C3435T polymorphism on the pharmacokinetics of lansoprazole and gastroesophageal symptoms in Japanese renal transplant recipients classified as CYP2C19 extensive. Int J Clin Pharmacol Ther 2006; 44:605-13. [PMID: 17190370 DOI: 10.5414/cpp44605] [Citation(s) in RCA: 9] [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: 11/18/2022] Open
Abstract
OBJECTIVE Lansoprazole and tacrolimus are substrates of ATP binding cassette (ABC) transporters such as P-glycoprotein (ABCBI/multidrug resistance 1) and cytochrome P450 (CYP). The purpose of this study was to investigate the implication of the ABCB1 C3435Tpolymorphism on the pharmacokinetics of (R)-lansoprazole, the major enantiomer, in CYP2C19 extensive metabolizers (EMs) and on gastroesophageal symptoms in renal transplant recipients receiving tacrolimus. MATERIALS 24 recipients who were CYP2C19 EMs were studied. METHODS Oral administration of 30 mg lansoprazole was started 2 days before transplantation. On Day 2 before and Day 28 after transplantation, the plasma concentrations of (R)-lansoprazole and tacrolimus were measured. RESULTS Pretransplantation, there were no significant differences in the pharmacokinetic parameters of (R)-lansoprazole between the 3 ABCBI C3435T genotypes. However, after renal transplantation, the peak plasma concentration (Cma ) and area under the plasma concentration-time curve (AUCO-24) of (R)-lansoprazole in patients with the ABCB1 C3435T C allele significantly increased, but not in patients with the TT genotype. These pharmacokinetic variations in (R)-lansoprazole did not influence the AUC of tacrolimus. There were no significant differences in the frequency of gastroesophageal symptoms among the three ABCB] C3435Tgenotypes. CONCLUSIONS (R)-lansoprazole concentrations significantly increased in CYP2C19 extensive metabolizers with the ABCB1 C3435T C allele, but not TT genotype, after renal transplantation. However, the clinical relevance of this observation may be minor because these pharmacogenetic changes were not associated with the occurrence of gastroesophageal complications.
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Affiliation(s)
- M Miura
- Department of Pharmaceutical Science, Akita University School of Medicine, Akita, Japan
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27
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Suenami K, Wah Lim L, Takeuchi T, Sasajima Y, Sato K, Takekoshi Y, Kanno S. Direct determination of non-steroidal anti-inflammatory drugs by column-switching LC–MS. J Sep Sci 2006; 29:2725-32. [PMID: 17305233 DOI: 10.1002/jssc.200600174] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 11/07/2022]
Abstract
A method for determination of 16 non-steroidal anti-inflammatory drugs (NSAIDs) in human plasma samples without time-consuming sample pre-treatments was developed. The system consisted of two pumps for mobile phase delivery, a six-port switching valve, a pre-column (Oasis HLB Cartridge Column), and a reversed phase analytical column (COSMOSIL 3C18-MS-II). The analytes were trapped on the precolumn and subsequently separated on the analytical column. The present method allowed on-line sample clean-up and enrichment, leading to improved sensitivity without any tedious sample preparation. The recoveries of NSAIDs from human plasma by column-switching were greater than 72.6%. The total analysis time for a single analytical run was approximately 11 min. The detection limits of NSAIDs were 0.0025 to 0.2 microg/mL using the selected ion monitoring mode.
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Affiliation(s)
- Koichi Suenami
- Department of Chemistry, Faculty of Engineering, Gifu University, Gifu, Japan.
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28
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Campbell CM, Aoi N, Bazin D, Bowen MD, Brown BA, Cook JM, Dinca DC, Gade A, Glasmacher T, Horoi M, Kanno S, Motobayashi T, Mueller WF, Sakurai H, Starosta K, Suzuki H, Takeuchi S, Terry JR, Yoneda K, Zwahlen H. Measurement of excited states in (40)Si and evidence for weakening of the N=28 shell gap. Phys Rev Lett 2006; 97:112501. [PMID: 17025880 DOI: 10.1103/physrevlett.97.112501] [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] [Received: 06/19/2006] [Indexed: 05/12/2023]
Abstract
Excited states in (40)Si have been established by detecting gamma rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target. The low excitation energy, 986(5) keV, of the 2(1)(+) state provides evidence of a weakening in the N=28 shell closure in a neutron-rich nucleus devoid of deformation-driving proton collectivity.
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Affiliation(s)
- C M Campbell
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
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29
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Dombrádi Z, Elekes Z, Saito A, Aoi N, Baba H, Demichi K, Fülöp Z, Gibelin J, Gomi T, Hasegawa H, Imai N, Ishihara M, Iwasaki H, Kanno S, Kawai S, Kishida T, Kubo T, Kurita K, Matsuyama Y, Michimasa S, Minemura T, Motobayashi T, Notani M, Ohnishi T, Ong HJ, Ota S, Ozawa A, Sakai HK, Sakurai H, Shimoura S, Takeshita E, Takeuchi S, Tamaki M, Togano Y, Yamada K, Yanagisawa Y, Yoneda K. Vanishing N = 20 shell gap: study of excited states in (27,28)Ne. Phys Rev Lett 2006; 96:182501. [PMID: 16712361 DOI: 10.1103/physrevlett.96.182501] [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] [Received: 07/13/2005] [Indexed: 05/09/2023]
Abstract
This Letter reports on the (1)H((28)Ne, (28)Ne) and (1)H((28)Ne, (27)Ne) reactions studied at intermediate energy using a liquid hydrogen target. From the cross section populating the first 2(+) excited state of (28)Ne, and using the previously determined BE(2) value, the neutron quadrupole transition matrix element has been calculated to be M(n)=13.8 +/- 3.7 fm(2). In the neutron knockout reaction, two low-lying excited states were populated in (27)Ne. Only one of them can be interpreted by the sd shell model while the additional state may intrude from the fp shell. These experimental observations are consistent with the presence of fp shell configurations at low excitation energy in (27,28)Ne nuclei caused by a vanishing N=20 shell gap at Z=10.
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Affiliation(s)
- Zs Dombrádi
- Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001, Hungary
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30
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Suenami K, Lim LW, Takeuchi T, Sasajima Y, Sato K, Takekoshi Y, Kanno S. Rapid and simultaneous determination of nonsteroidal anti-inflammatory drugs in human plasma by LC–MS with solid-phase extraction. Anal Bioanal Chem 2006; 384:1501-5. [PMID: 16534573 DOI: 10.1007/s00216-006-0352-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2005] [Revised: 01/12/2006] [Accepted: 02/02/2006] [Indexed: 10/24/2022]
Abstract
A rapid, selective and sensitive analytical method for the simultaneous determination of 16 nonsteroidal anti-inflammatory drugs (NSAIDs) in human plasma was carried out using Oasis HLB solid-phase extraction (SPE), followed by reversed-phase high-performance liquid chromatography and quadrupole mass spectrometry with electrospray ionization operated in the negative ion mode. The recoveries of NSAIDs from human plasma by SPE were greater than 76.7%. The use of a short column packed with small particles enabled rapid and simultaneous determination within 7 min. The detection limits for the NSAIDs were 0.01-0.9 mug/ml using the selected ion monitoring mode.
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Affiliation(s)
- Koichi Suenami
- Department of Chemistry, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
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31
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Hasegawa T, Kanno S, Kato M, Fujihara K, Shiga Y, Itoyama Y. Neuro-Behçet's disease presenting initially as mesiotemporal lesions mimicking herpes simplex encephalitis. Eur J Neurol 2005; 12:661-2. [PMID: 16053478 DOI: 10.1111/j.1468-1331.2005.01031.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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32
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Imai N, Ong HJ, Aoi N, Sakurai H, Demichi K, Kawasaki H, Baba H, Dombrádi Z, Elekes Z, Fukuda N, Fülöp Z, Gelberg A, Gomi T, Hasegawa H, Ishikawa K, Iwasaki H, Kaneko E, Kanno S, Kishida T, Kondo Y, Kubo T, Kurita K, Michimasa S, Minemura T, Miura M, Motobayashi T, Nakamura T, Notani M, Onishi TK, Saito A, Shimoura S, Sugimoto T, Suzuki MK, Takeshita E, Takeuchi S, Tamaki M, Yamada K, Yoneda K, Watanabe H, Ishihara M. Anomalously hindered E2 strength B(E2;2+(1)-->0+) in 16C. Phys Rev Lett 2004; 92:062501. [PMID: 14995232 DOI: 10.1103/physrevlett.92.062501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2003] [Indexed: 05/24/2023]
Abstract
The electric quadrupole transition from the first 2(+) state to the ground 0(+) state in 16C is studied through measurement of the lifetime by a recoil shadow method applied to inelastically scattered radioactive 16C nuclei. The measured mean lifetime is 77+/-14(stat)+/-19(syst) ps. The central value of mean lifetime corresponds to a B(E2;2+(1)-->0(+)) value of 0.63e(2) fm(4), or 0.26 Weisskopf units. The transition strength is found to be anomalously small compared to the empirically predicted value.
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Affiliation(s)
- N Imai
- RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
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33
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Shears L, Kanno S, Kormos R, McCurry K, Billiar T. The role of nitric oxide in cardiomyogenesis using embryonic stem cells. J Heart Lung Transplant 2004. [DOI: 10.1016/j.healun.2003.11.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Kanno S, Anuradha CD, Hirano S. Chemotactic responses of osteoblastic MC3T3-E1 cells toward zinc chloride. Biol Trace Elem Res 2001; 83:49-55. [PMID: 11694002 DOI: 10.1385/bter:83:1:49] [Citation(s) in RCA: 12] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2000] [Revised: 03/18/2001] [Accepted: 03/21/2001] [Indexed: 11/11/2022]
Abstract
Although zinc (Zn) is known to participate in bone formation, its exact role in the remodeling of this tissue has not been fully clarified. The present study was designed to investigate whether Zn has a role at the resorptive sites in vitro. We investigated the migration of osteoblastic MC3T3-E1 cells in response to Zn using a Boyden chamber assay. Exposure of MC3T3-E1 cells to Zn stimulated the migration of MC3T3-E1 cells. Checkerboard analysis revealed that the migration of MC3T3-E1 cells toward Zn was a directional (chemotaxis) rather than a random (chemokinesis) motion. Pretreatment of MC3T3-E1 cells with pertussis toxin completely blocked the chemotactic response of cells to Zn, indicating that it is mediated by G-protein-coupled receptors. Because the bone is one of the major Zn storage sites, we suggest that Zn released from bone-resorptive sites plays an important role in the recruitment of osteoblasts and bone renewal.
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Affiliation(s)
- S Kanno
- Research Center for Environmental Risk, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
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Kanno S, Anuradha CD, Hirano S. Localization of zinc after in vitro mineralization in osteoblastic cells. Biol Trace Elem Res 2001; 83:39-47. [PMID: 11694001 DOI: 10.1385/bter:83:1:39] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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: 01/23/2001] [Revised: 03/18/2001] [Accepted: 03/21/2001] [Indexed: 11/11/2022]
Abstract
The present study was designed to investigate the incorporation of zinc (Zn) into cultured UMR-106 osteoblasts in response to mineralization caused by the addition of beta-glycerophosphate. As a result of the induced mineralization, the contents of calcium (Ca), phosphorus (P), and Zn in the monolayer increased, whereas the magnesium (Mg) content did not change. The activity of alkaline phosphatase (ALP) also increased during the process. The zinc distribution in the cell monolayer was studied using Zinquin, a fluorescent zinc ion chelator. The double fluorescent labeling with Zinquin and calcein revealed that zinc was localized both as intracellular vesicles and extracellular clusters, whereas calcium was colocalized with extracellular zinc. These results suggest that zinc is involved in the mineralization process of UMR-106 cells.
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Affiliation(s)
- S Kanno
- Research Center for Environmental Risk, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
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Kanno S, Wu YJ, Lee PC, Dodd SJ, Williams M, Griffith BP, Ho C. Macrophage accumulation associated with rat cardiac allograft rejection detected by magnetic resonance imaging with ultrasmall superparamagnetic iron oxide particles. Circulation 2001; 104:934-8. [PMID: 11514382 DOI: 10.1161/hc3401.093148] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Acute cardiac allograft rejection continues to be the cause of graft loss and contributes to the morbidity and mortality after cardiac transplantation. In this study, we report a new method for detecting organ rejection in transplantation with an MR-based technique using dextran-coated ultrasmall superparamagnetic iron oxide (USPIO) particles. These particles ( approximately 27 nm in diameter) are known to shorten relaxation times in MRI experiments. METHODS AND RESULTS A new rat model of heterotopic heart and lung transplantation has been developed for MRI experiments. Allotransplantations (DA-->BN) were performed (n=8), with syngeneic transplantations (BN-->BN) serving as controls (n=8). MR images were obtained with a gradient echo method. At postoperative day 7, allotransplants developed moderate rejection as determined histopathologically. A significant reduction in MR signal intensity was observed after USPIO injection into rats with allotransplanted hearts. Syngeneic transplants showed no differences in MR signal intensity before and after USPIO injections. After injection of USPIO particles at postoperative day 6, a group of allotransplanted rats was treated with cyclosporin A (3 mg/kg). Animals treated with cyclosporin A for 7 days showed no reduction in MR signal intensity after USPIO reinjection at day 14, whereas animals treated for 4 days showed a significant decrease in MR signal intensity in the transplanted hearts indicative of acute graft rejection. Pathological analysis of these animals revealed that dextran-coated USPIO particles were taken up by the infiltrating macrophages that accumulated within the rejecting cardiac graft. CONCLUSIONS This MRI method offers promise as a noninvasive method for detecting transplant allograft rejection.
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Affiliation(s)
- S Kanno
- Department of Biological Sciences and Pittsburgh NMR Center for Biomedical Research, Carnegie Mellon University, Pittsburgh, PA 15213-2683, USA
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Kanno S, Wu YJ, Lee PC, Billiar TR, Ho C. Angiotensin-converting enzyme inhibitor preserves p21 and endothelial nitric oxide synthase expression in monocrotaline-induced pulmonary arterial hypertension in rats. Circulation 2001; 104:945-50. [PMID: 11514384 DOI: 10.1161/hc3401.093155] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary arterial hypertension (PAH) is associated with structural changes in the pulmonary vasculature characterized by the proliferation of cellular components of the vessels. ACE inhibitor (ACEI) may have beneficial effects in treating PAH, but its precise mechanism of action in the remodeling process is unclear. p21 is a cyclin-dependent kinase inhibitor that may have a protective role in this process by inhibiting cellular proliferation. Endothelial nitric oxide synthase (eNOS) has also been shown to be protective by its vasodilatory effect. Therefore, we investigated whether expression of p21 and eNOS was modulated by ACEI treatment in a rat model. METHODS AND RESULTS Monocrotaline (MCT) was administered to 2 groups of Sprague-Dawley rats fed a high-cholesterol diet, ie, one group received MCT concomitantly with enalapril treatment (MCT(+)/ACEI(+) rats), and the other group did not receive enalapril (MCT(+)/ACEI(-) rats). After 5 weeks, MRI showed right ventricular hypertrophy in MCT(+)/ACEI(-) rats. MCT(+)/ACEI(+) rats showed a preserved right ventricular morphology. Isolated pulmonary perfusion studies showed that ACEI significantly upregulated NO production, as measured by nitrite levels. Addition of N-methyl-D-glucamine dithiocarbamate-Fe solution, an NO-trapping agent, reversed the basal vasodilatory effect of ACEI in the pulmonary vasculature. Immunoblot analysis showed decreased p21 and eNOS expression in the lung in MCT(+)/ACEI(-) rats, whereas their expression was preserved with enalapril treatment. CONCLUSIONS ACEI suppresses the development of MCT-induced PAH in rats. The mechanism of action might involve the preservation of p21 and eNOS expression. Both p21 and endothelium-derived NO appear to have protective roles in the development of PAH.
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MESH Headings
- Angiotensin-Converting Enzyme Inhibitors/pharmacology
- Animals
- Blood Pressure/drug effects
- Cells, Cultured
- Cyclin-Dependent Kinase Inhibitor p21
- Cyclins/metabolism
- Dietary Fats
- Disease Models, Animal
- Enalapril/pharmacology
- Hypertension, Pulmonary/chemically induced
- Hypertension, Pulmonary/complications
- Hypertension, Pulmonary/drug therapy
- Hypertension, Pulmonary/physiopathology
- Hypertrophy, Right Ventricular/diagnosis
- Hypertrophy, Right Ventricular/etiology
- Hypertrophy, Right Ventricular/physiopathology
- In Vitro Techniques
- Lung/blood supply
- Lung/drug effects
- Lung/metabolism
- Lung/pathology
- Magnetic Resonance Imaging
- Male
- Monocrotaline
- Nitrates/metabolism
- Nitric Oxide Donors/pharmacology
- Nitric Oxide Synthase/biosynthesis
- Nitric Oxide Synthase Type III
- Nitrites/metabolism
- Perfusion
- Pulmonary Artery/drug effects
- Pulmonary Artery/pathology
- Pulmonary Artery/physiopathology
- Rats
- Rats, Sprague-Dawley
- Signal Transduction/drug effects
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Affiliation(s)
- S Kanno
- Department of Biological Sciences and Pittsburgh NMR Center for Biomedical Research, Carnegie-Mellon University, Pittsburgh, PA 15213-2683, USA.
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Wang H, Ikeda S, Kanno S, Guang LM, Ohnishi M, Sasaki M, Kobayashi T, Tamura S. Activation of c-Jun amino-terminal kinase is required for retinoic acid-induced neural differentiation of P19 embryonal carcinoma cells. FEBS Lett 2001; 503:91-6. [PMID: 11513861 DOI: 10.1016/s0014-5793(01)02699-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
P19 embryonal carcinoma cells are known to differentiate into neurons and glia when treated with relatively high concentrations (>100 nM) of retinoic acid (RA). Concomitant with this RA-induced neural differentiation, we observed an activation of the c-Jun amino-terminal kinase (JNK). JNK was required for the RA-induced neural differentiation, because dominant-negative JNK blocked the differentiation. Studies using protein phosphatase inhibitors and protein kinase inhibitors suggested that both okadaic acid-sensitive protein phosphatase(s) and protein kinase C participate in the RA-induced activation of JNK.
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Affiliation(s)
- H Wang
- Department of Biochemistry, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
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Abstract
It has been suggested that oxidative stress plays a major role in various forms of cell death, including necrosis and apoptosis. We have previously reported that fluoride (NaF) induces apoptosis in HL-60 cells by caspase-3 activation. The main focus of this investigation was to arrive at a possible pathway of the apoptosis induced by NaF upstream of caspase-3, because the mechanism is still unknown. The present study showed that after exposure to NaF, there was an increase in MDA and 4-HNE and a loss of mitochondrial membrane potential (deltaPsi(m)) was also observed in NaF-treated cells. There was a significant increase in cytosolic cytochrome c, which is released from the mitochondria. We have reported a downregulation of Bcl-2 protein in NaF-treated cells. The antioxidants N-acetyl cysteine (NAC), glutathione (GSH) protected the cells from loss of deltaPsi(m), and there was no cytochrome c exit or Bcl-2 downregulation, and we suggest that these antioxidants prevent apoptosis induced by NaF. These results suggested that perhaps NaF induced apoptosis by oxidative stress-induced lipid peroxidation, causing loss of deltaPsi(m), and thereby releasing cytochrome c into the cytosol and further triggering the caspase cascade leading to apoptotic cell death in HL-60 cells.
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Affiliation(s)
- C D Anuradha
- Regional Environment Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305 8506, Japan
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Iizasa T, Kamei K, Chiyo M, Suzuki M, Baba M, Toyosaki T, Hiroshima K, Ohwada H, Kanno S, Nishimura K, Fujisawa T. Colonization with Schizophyllum commune of localized honeycomb lung with mucus. Respiration 2001; 68:201-3. [PMID: 11287837 DOI: 10.1159/000050493] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 11/19/2022] Open
Abstract
We report a surgical case involving localized honeycomb lung with mucus, caused by colonization of a Schizophyllum commune, which displayed a tumorous shadow in the right upper mediastinum. A 74-year-old male with a history of tuberculosis in the 1970s was referred to Chiba University Hospital (Chiba, Japan) with an abnormal shadow evident in the chest roentgenogram. A transbronchial biopsy failed to yield a definite diagnosis. We resected the right upper lobe, which was found to contain a consolidative lesion filled with viscous mucus in the right upper lobe adjacent to the right upper mediastinum. Microscopic examination revealed a honeycomb lung formation with mucus in the destroyed space. Culture of the mucus yielded a whitish filamentous fungus, positively identified as S. commune. This is the first report of S. commune leading to a deposit of mucus and the formation of a consolidative lesion in the destroyed lung.
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Affiliation(s)
- T Iizasa
- Department of Surgery, Institute of Pulmonary Cancer Research, Chiba University, Chiba, Japan
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41
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Abstract
Electrical activation of the heart requires cell-cell transfer of current via gap junctions, arrays of densely packed protein channels that permit intercellular passage of ions and small molecules. Because current transfer occurs only at gap junctions, the spatial distribution and biophysical properties of gap junction channels are important determinants of the conduction properties of cardiac muscle. Gap junction channels are composed of members of a multigene family of proteins called connexins. As a general rule, individual cells express multiple connexins, which creates the potential for considerable functional diversity in gap junction channels. Although gap junction channels are relatively nonselective in their permeability to ions and small molecules, cardiac myocytes actively adjust their level of coupling by multiple mechanisms including changes in connexin expression, regulation of connexin trafficking and turnover, and modulation of channel properties. In advanced stages of heart disease, connexin expression and intercellular coupling are diminished, and gap junction channels become redistributed. These changes have been strongly implicated in the pathogenesis of lethal ventricular arrhythmias. Ongoing studies in genetically engineered mice are revealing insights into the role of individual gap junction channel proteins in normal cardiac function and arrhythmogenesis.
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Affiliation(s)
- S Kanno
- Department of Surgery and the Center for Cardiovascular Research, Washington University School of Medicine, St. Louis, MO 63110, USA
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Sato K, Jin JY, Takeuchi T, Miwa T, Suenami K, Takekoshi Y, Kanno S. Integrated pulsed amperometric detection of glufosinate, bialaphos and glyphosate at gold electrodes in anion-exchange chromatography. J Chromatogr A 2001; 919:313-20. [PMID: 11442037 DOI: 10.1016/s0021-9673(01)00843-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [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 rapid and practical method for direct detection of the herbicides (glufosinate, bialaphos and glyphosate) in anion-exchange chromatography has been developed with integrated pulsed amperometric detection (IPAD). The electrochemical behavior of these herbicides showed catalytic currents based on the oxidation of amines in their structures. Waveform in IPAD was similar to that for amino acids, which exhibited adsorption/desorption catalytic features at gold electrode surface in alkaline solution. Under optimized conditions, detection limits (signal-to-noise ratio of 3) for glufosinate, bialaphos and glyphosate were 20, 65 and 50 ng ml(-1), respectively, with correlation coefficients of 0.995, 0.997 and 0.996 over concentration ranges of 0.1-45, 0.3-32 and 0.1-50 microg ml(-1), respectively. The relative standard deviations (n=5) were 1.7-3.0%. The present method was successfully applied to the determination of glyphosate in urine and serum.
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Affiliation(s)
- K Sato
- Department of Chemistry, Faculty of Engineering, Gifu University, Japan
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43
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Abstract
RGD motif-containing peptides have been used in various studies of cell adhesion and growth. We report that RGD triggered apoptosis at a concentration of 1 mmol/L, whereas RAD-containing peptides failed to induce apoptosis in HL-60 cells. RGD-treated cells revealed internucleosomal DNA fragmentation. Western blot reveals caspase-3 activation in RGD peptide-treated cells. A caspase-3 inhibitor z-VAD-FMK completely blocked the apoptosis, but a caspase-1 inhibitor (Ac-YVAD-CMK) and caspase-2 inhibitor (z-VDVAD-FMK) did not block the apoptosis, suggesting that caspase-3 might have a critical role in the execution process of apoptosis induced by RGD. RGD peptides have been used extensively to inhibit tumor metastasis. Our results should help in further understanding the RGD peptide-induced apoptosis, which is important since RGD peptides have a potential role in therapies of the future.
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Affiliation(s)
- C D Anuradha
- Regional Environment Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
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Sasaki R, Takahashi M, Funato O, Nitta H, Murakami M, Kawamura H, Suto T, Kanno S, Saito K. Prognostic significance of lymph node involvement in middle and distal bile duct cancer. Surgery 2001; 129:677-83. [PMID: 11391365 DOI: 10.1067/msy.2001.114555] [Citation(s) in RCA: 54] [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: 12/18/2022]
Abstract
BACKGROUND Although lymph node involvement is considered an important prognostic factor, a detailed analysis has not been conducted in middle (Bm) and distal (Bi) bile duct cancer. METHODS The histopathology of resections taken from 59 patients with Bm and Bi disease (Bm, 33 patients; Bi, 26 patients) was examined. The prevalence of lymph node involvement and its relationship to recurrence and prognosis were investigated. Survival rates were investigated according to the number of metastatic lymph nodes found, the TNM nodal stages, and the nodal stage classifications of The General Rules of the Japanese Society of Biliary Surgery. RESULTS The frequency of nodal involvement in Bm and Bi was 45.5% and 30.8%, respectively. A significant correlation existed between a patient's prognosis and his TNM nodal stage, Japanese Society of Biliary Surgery nodal stage, and the number of metastatic lymph nodes found (P <.0001, respectively). Among 8 sites of postoperative recurrence, metastasis occurred most frequently in the liver (16/23). Patients with nodal involvement had a significantly higher rate of liver metastasis (10/23) than those without it (6/36) (P =.024). CONCLUSIONS The number of metastatic lymph nodes found in patients with Bm or Bi cancer, and the nodal stage of their nodes, are significant prognostic indicators. Patients with nodal involvement are at high risk for liver metastasis in Bm and Bi disease.
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Affiliation(s)
- R Sasaki
- Department of Surgery I, Iwate Medical University School of Medicine, 19-1 Uchimaru, Morioka 020-8505, Japan
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Ozaki H, Matsuyama T, Hirabayashi K, Iizuka M, Urano K, Kawakubo Y, Kanno S, Ozawa A, Ohkido M, Hirota F, Nagashima N. Tsutsugamushi disease in Kanagawa Prefecture, Japan: clinical report of two cases and survey of other incidences in 1998. Tokai J Exp Clin Med 2001; 26:19-24. [PMID: 11592298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Tsutsugamushi disease is characterized by the early appearance of a black crust at the bitten area and the subsequent development of macular or macropapular rush on the whole body with high fever. While treatment with tetracycline derivatives and chloramphenicols is effective, delayed diagnosis or inappropriate treatment will lead to fatality. In this report, we describe two typical cases of tsutsugamushi disease and discuss other incidences in Kanagawa Prefecture, Japan, in 1998. One of the present two patients was diagnosed to be a case of the new type by Kawasaki strain of Rickettsia tsutsugamushi, while responsible strain was not identified for the other case. Since the disease is spreading widely even to suburban areas, we emphasize the need to consider the possible diagnosis of tsutsugamushi disease in patients with generalized eruption and high fever.
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Affiliation(s)
- H Ozaki
- Department of Dermatology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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Arisaka O, Hoshi M, Kanazawa S, Numata M, Nakajima D, Kanno S, Negishi M, Nishikura K, Nitta A, Imataka M, Kuribayashi T, Kano K. Preliminary report: effect of adrenal androgen and estrogen on bone maturation and bone mineral density. Metabolism 2001; 50:377-9. [PMID: 11288028 DOI: 10.1053/meta.2001.21678] [Citation(s) in RCA: 36] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
To clarify the independent physiological roles of adrenal androgen and estrogen on bone growth, we compared the lumbar spine bone mineral density (BMD) in prepubertal girls with virilizing congenital adrenal hyperplasia (CAH) (n = 17) and girls with central precocious puberty (CPP) (n = 18). When BMD was analyzed according to chronologic age, no significant differences were found between CPP and CAH patients. However, when adjusted to bone age, BMD was statistically higher in CAH than in CPP subjects. This finding suggests that adrenal androgen, as well as estrogen, plays an important role in increasing BMD. Adrenal androgen may act on bone not only as androgen, but as estrogen after having been metabolized into an aromatized bone-active compound in peripheral tissues, such as bone and fat. Therefore, adrenal androgen may have a more important role in increasing BMD than previously realized.
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Affiliation(s)
- O Arisaka
- Department of Pediatrics, Dokkyo University School of Medicine, Tochigi, Japan
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Sato Y, Abe M, Tanaka K, Iwasaka C, Oda N, Kanno S, Oikawa M, Nakano T, Igarashi T. Signal transduction and transcriptional regulation of angiogenesis. Adv Exp Med Biol 2001; 476:109-15. [PMID: 10949659 DOI: 10.1007/978-1-4615-4221-6_9] [Citation(s) in RCA: 41] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
When quiescent endothelial cells (ECs) are exposed to angiogenic factor such as VEGF; ECs express proteases to degrade extracellular matrices, migrate, proliferate and form new vessels. However, the molecular mechanism of these events is not fully characterized yet. We are studying the signal transduction and transcriptional regulation of angiogenesis. We investigated the properties of two VEGF receptors, Flt-1 and KDR, by using two newly developed blocking monoclonal antibodies (mAbs), i.e., anti-human Flt-1 mAb and anti-human KDR mAb. VEGF elicited induction of transcription factor Ets-1 in human umbilical vein endothelial cells (HUVECs). This induction was mediated by the KDR/Flt-1 heterodimer and the KDR homodimer. The role of transcription factor Ets-1 in angiogenesis was further clarified. We established both high and low Ets-1 expressing EC lines, and compared angiogenic properties of these cell lines with a parental murine EC line, MSS31. The growth rate was almost identical among three cell lines. It appeared that gene expressions of matrix metalloproteinases (MMP-1, MMP-3, and MMP-9) as well as integrin beta 3 were correlated with the level of Ets-1 expression. As a result, the invasiveness was enhanced in high Ets-1 expressing cells and reduced in low Ets-1 expressing cells compared with parental cells, and high Ets-1 expressing cells made more tube-like structures in type 1 collagen gel. These results indicate that Ets-1 is a principle transcription factor converting ECs to the angiogeneic phenotype.
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Affiliation(s)
- Y Sato
- Department of Vascular Biology, Tohoku University
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Tsuruda A, Kanno S, Ohtani H, Suzuki R, Nishioka M, Koshiyama Y, Kurumi M. Effect of sepimostat mesilate on experimental venous thrombosis in rats. Thromb Res 2001; 101:193-201. [PMID: 11228342 DOI: 10.1016/s0049-3848(00)00400-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Sepimostat mesilate (FUT-187: 6-amidino-2-naphthyl 4-[(4,5-dihydro-1H-imidazol-2-yl) amino] benzoate dimethane sulfonate) is a newly synthesized serine protease inhibitor. In the present study, the oral administration of FUT-187 inhibited stasis-induced venous thrombosis in rats. We supposed that such effect of this compound was caused by its inhibitory effect on coagulation. However, the dose of FUT-187 that was effective at inhibiting thrombosis (10 and 30 mg/kg, po) had no effect on the plasma recalcification time (PRCT), activated partial thromboplastin time (APTT) and prothrombin time (PT) in rats. Therefore, we investigated the fibrinolytic activity of FUT-187 in rat plasma. The results revealed that rat plasma after FUT-187 administration exhibited increased amidolytic activity for a plasmin-, tissue-type plasminogen activator (t-PA)-, urokinase-type plasminogen activator (u-PA)-, factor Xa-, factor XIa- and factor XIIa-sensitive synthetic peptide substrate. On the other hand, the inhibitory effect of FUT-187 in the thrombosis model was not affected by additional treatment with epsilon-amino-n-caproic acid (EACA), a plasmin-mediated fibrinolysis inhibitor. These results suggest that even if FUT-187 enhanced fibrinolysis, it would be independent of a plasmin-mediated fibrinolytic pathway. To characterize the fibrinolytic activity, which might reduce the thrombus weight in the thrombosis model administered FUT-187, we carried out fibrinogen zymography, and clarified that FUT-187 enhanced the formation of a 20-kDa fibrinolytic fragment. Interestingly, this fragment was not affected by t-PA. Consequently, we consider that the inhibitory effect of FUT-187 on venous thrombosis model is caused by fibrinolysis, which is attributable to the 20-kDa fragment, rather than by inhibition of thrombus formation.
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Affiliation(s)
- A Tsuruda
- Research Laboratories, Torii Pharmaceutical Co., Ltd., 1-2-1 Ohnodai, Chiba 267-0056, Midori, Japan
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Abstract
BACKGROUND AND OBJECTIVES Microsatellite instability (MSI) has been reported in several tumors. However, few reports are available concerning MSI in biliary tract cancers. We investigated MSI and allelic loss at the hMLH1 and hMSH2 gene loci in biliary tract cancers. METHODS We analyzed microsatellite alterations using 7 microsatellite markers in 38 cases of extrahepatic bile duct (EHBD) cancer and 16 cases of ampullary cancer using polymerase chain reaction and an automated fluorescent DNA sequencer. RESULTS A MSI prevalence of 13.2% (5/38) was observed for EHBD cancer and a prevalence of 12.5% (2/16) was observed for ampullary cancer. Loss of heterozygosity at the hMLH1 and hMSH2 gene loci were observed in 4% (1/25 informative cases) and 6.1% (2/33) of EHBD cancer cases, respectively; and in 11.1% (1/9) and 8.3% (1/12) of ampullary cancer cases, respectively. The cumulative survival rate of patients with MSI was significantly better than that of patients without MSI in EHBD cancer. However, MSI was not an independent prognostic factor. CONCLUSIONS Our results suggest that genetic defects in the DNA mismatch repair system and MSI do not play an important role in the majority of biliary tract cancers.
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Affiliation(s)
- T Suto
- Department of Surgery I, School of Medicine, Iwate Medical University, Morioka, Iwate, Japan
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Furuse M, Kanno S, Takano T, Matsumura Y. Cyclohexane as an alternative vapor of carbon tetrachloride for the assessment of gas removing capacities of gas masks. Ind Health 2001; 39:1-7. [PMID: 11212284 DOI: 10.2486/indhealth.39.1] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An alternative vapor was explored to replace carbon tetrachloride (CCl4) for testing breakthrough times of cartridges and canisters of gas masks in the National Approval Test of Respirators. Cyclohexane was single out as a candidate for the alternative vapor out of six vapors: trichloroethylene, n-pentane, n-hexane, n-heptane, toluene and cyclohexane from the viewpoints of similarity of vapor pressure and water-solubility to CCl4, lower toxicity than CCl4, and technical feasibility in generating an airflow of 30 L/min containing the vapor ranging from 300 to 5000 ppm. Breakthrough times of cartridges and canisters were examined by generating cyclohexane vapor in a test airflow of 30 L/min in comparison with CCl4 vapor under various test conditions with different vapor concentrations and relative humidities (RH). As the results, the breakthrough times of the cartridges and canisters for cyclohexane were found to almost coincide with those for CCl4 under all examined range of concentrations and RH. By an increase of humidity from 50% RH to 80% RH, the cartridges showed significant shortening of breakthrough times for both of CCl4 and cyclohexane, but the susceptibility of the breakthrough time of cyclohexane to humidity was also similar to that of CCl4. It was, therefore, concluded that cyclohexane can be recommended as the alternative vapor of CCl4 for testing the breakthrough times of gas mask cartridges and canisters in the National Approval Test.
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Affiliation(s)
- M Furuse
- National Institute of Industrial Health, Kawasaki, Japan
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