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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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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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Miyamoto M, Miyoshi T, Osawa K, Mori A, Oka T, Ito H. Efficacy of early intravenous landiolol, an ultrashort-acting beta-blocker on infarct size and its safety in patients with myocardial infarction undergoing primary PCI: a randomized, controlled study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Previous clinical studies showed that early intravenous metoprolol before reperfusion in patients with ST-elevation myocardial infarction (STEMI) undergoing primary PCI reduced infarct size. However, intravenous beta-blockers in acute phase of STEMI can be associated with adverse effects such as cardiogenic shock and atrioventricular block. Landiolol is an ultrashort-acting beta-blocker with a half-life of 3 min that is eight times more cardioselective than esmolol.
Purpose
We evaluate the efficacy of intravenous infusion of landiolol on infarct size and its safety in STEMI patients undergoing primary PCI.
Methods
This study is a multicenter randomized control trial. A total of 47 patients with Killip class II or less STEMI undergoing PCI within 12 hours of symptoms onset were randomized to receive intravenous landiolol (n=23) or not (control, n=24). Patients allocated to landiolol group delivered an intravenous continuous dose of 3μg/min/kg before reperfusion and then continued until a total dose of 50mg. All patients started oral metoprolol or carvedilol within 12 hours. The primary end point was myocardial salvage index (MSI) on magnetic resonance imaging performed 5 to 7 days after PCI. MSI was defined as the difference between the area at risk and the area of necrosis analyzed using a commercial software.
Results
Magnetic resonance imaging was performed in 35 patients (17 patients in landiolol group and 18 patients in the control group), and ischemia duration time was 229 minutes in the landiolol group and the 242 minutes in control. In adjusting for confounding variables, the areas of myocardium at risk were not difference in both groups (54.4g in the landiolol group, and 46.8g in the control group; p=0.31). However, MSI in the landiolol group was significantly reduced than that in the control group (36.8% and 57.0%; p<0.001).
In both group blood pressure was not difference in recruitment (142mmHg in landiolol group, and 144 in control) and starting PCI (163mmHg in landiolol group, and 165 in control). Regarding safety, the composite of death, malignant ventricular arrhythmia, cardiogenic shock, and atrioventricular block at 24 hours did not differ between the landiolol and the control groups (8.7% and 8.3%, respectively, p=0.93).
Conclusion
Early intravenous landiolol before starting primary PCI reduced infarct size in STEMI patients without significant hemodynamic adverse effects.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- M Miyamoto
- Okayama University Hospital, Department of Cardiovascular Therapeutics, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Therapeutics, Okayama, Japan
| | - K Osawa
- Japanese Red Cross Okayama Hospital, Cardiology, Okayama, Japan
| | - A Mori
- Kagawa Rosai Hospital, Cardiology, Kagawa, Japan
| | - T Oka
- Tsuyama central Hospital, Cardiology, Okayama, Japan
| | - H Ito
- Okayama University Hospital, Department of Cardiovascular Therapeutics, Okayama, Japan
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Shigemura K, Kitagawa K, Osawa K, Nishimoto K, Yi-Te C, Sung S, Chen K, Fujisawa M. Molecular characteristics of carbapenem-resistant Klebsiella pneumoniae from urinary tract infections. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32690-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Ihdayhid AR, Norgaard BL, Khav N, Gaur S, Leipsic J, Nerlekar N, Osawa K, Miyoshi T, Jensen J, Kimura T, Shiomi H, Erglis A, Oldroyd K, Achenbach S, Ko B. P2238Prognostic value and incremental benefit of ischaemic myocardial burden subtended by non-invasive CT-derived fractional flow reserve (FFRCT) significant stenoses. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Fractional flow reserve derived from CT-coronary angiography (FFRCT) accurately identifies ischaemic vessels which may be associated with clinical outcomes. Its predictive value in grey zone FFRCT values between 0.7–0.8 is not defined. The technique permits estimation of burden of ischaemic myocardium subtended by FFRCT significant vessels.
Purpose
To evaluate the prognostic value and incremental benefit of FFRCT defined ischaemic myocardial burden when compared to FFRCT alone.
Methods
This is a subanalysis of NXT (Analysis of Coronary Blood-Flow Using CTA:Next-Steps), a prospective study of stable coronary artery disease (CAD) patients referred for invasive angiography (ICA) undergoing invasive FFR, CTA and FFRCT in whom treating physicians had been blinded to FFRCT results. Primary endpoint, defined as a composite of non-fatal myocardial infarction and any revascularisation, was determined in 206 patients (age 64±9.5 years, 64% male) and 618 vessels. Burden of ischaemic myocardium was defined as percentage of myocardium subtended beyond the point at which a vessel's FFRCT becomes ≤0.8 as estimated by APPROACH score (FFRCT-APPROACH). In significant FFRCT vessels, the predictive value and incremental benefit of FFRCT-APPROACH was compared with significant FFRCT (≤0.8) for primary endpoint as measured by area under the receiver operator characteristic curve (AUC). Significant ischaemic myocardial burden was defined as >10%. The incidence and relationship between the primary endpoint with each 10% increase in FFRCT-APPROACH and 0.05-unit decrease in FFRCT values ≤0.8 was determined.
Results
Significant FFRCT was identified in 52.9% of patients (109/206) and 29.3% of vessels (181/618). At 4.7 years median follow-up the incidence of the primary endpoint in vessels with significant FFRCT-APPROACH was 58.9% (96/163) which was comparable with vessels with significant FFRCT (55.2%,100/181; P=0.50). The predictive value of FFRCT-APPROACH for the primary endpoint was comparable with FFRCT (AUC 0.72 [95% CI 0.65–0.79] vs 0.71 [0.63–0.78], P=0.79). When combined, there was significant predictive improvement compared with FFRCT alone (AUC 0.77 [0.70–0.84]; P=0.01). The largest incremental benefit upon FFRCT was observed in vessels with FFRCT values in the grey zone between 0.70–0.80 (AUC 0.76 [0.65–0.86] vs 0.62 [0.48–0.74]; P<0.01). Each 10% increase in FFRCT-APPROACH (Adjusted-HR 1.36; 95% CI 1.16–1.60; P<0.001) and each 0.05-unit FFRCT decrease (Adjusted-HR 1.42; 1.19–1.70; P<0.001) were independently associated with significant increase in the incidence of the primary-endpoint.
Conclusion
In patients with stable CAD referred for ICA, the burden of ischaemic myocardium subtended by FFRCT significant vessels predicted non-fatal myocardial infarction and future revascularisation. This provided significant incremental benefit when used in combination with FFRCT particularly at FFRCT values in the grey zone between 0.7 to 0.8.
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Affiliation(s)
- A R Ihdayhid
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - B L Norgaard
- Aarhus University Hospital, Department of Cardiology, Aarhus, Denmark
| | - N Khav
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - S Gaur
- Aarhus University Hospital, Department of Cardiology, Aarhus, Denmark
| | - J Leipsic
- University of British Columbia, Department of Radiology, Vancouver, Canada
| | - N Nerlekar
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - K Osawa
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - J Jensen
- Aarhus University Hospital, Department of Cardiology, Aarhus, Denmark
| | - T Kimura
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - H Shiomi
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - A Erglis
- Paul Stradins Clinical University Hospital, Latvian Centre of Cardiology, Riga, Latvia
| | - K Oldroyd
- Golden Jubilee National Hospital, West of Scotland Heart and Lung Centre, Clydebank, United Kingdom
| | - S Achenbach
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - B Ko
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
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Awano H, Nagai M, Shirakawa T, Osawa K, Lee T, Takeshima Y, Nishio H, Matsuo M, Iijima K. SMA BIOMARKERS. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.383] [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: 10/25/2022]
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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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Kuroda R, Higuchi H, Yoshida K, Yonejima Y, Hisa K, Utsuyama M, Osawa K, Hirokawa K. Effects of chocolate containing Leuconostoc mesenteroides strain NTM048 on immune function: a randomized, double-blind, placebo-controlled trial. Immun Ageing 2018; 15:29. [PMID: 30479641 PMCID: PMC6247524 DOI: 10.1186/s12979-018-0139-2] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 11/08/2018] [Indexed: 11/21/2022]
Abstract
Background Previous reports showed that oral administration of Leuconostoc mesenteroides strain NTM048 increases IgA levels and CD4+ T cell population in feces and mice, respectively, as revealed by flow cytometric analysis of splenocytes. This study aimed to evaluate the effect of chocolate supplemented with L. mesenteroides strain NTM048 (> 1.00 × 109 CFU/day, NTM048) on the immune parameters of healthy subjects, using a randomized, placebo-controlled, double-blinded study design. Methods Participants (mean age: 46.3 years) ingested 28 g of test food daily, at a time of their own choice, for 4 weeks. The immunological parameters of all participants were evaluated two times (pre- and post- ingestion). At the end of the study, various immunological parameters of the participants were measured and scoring of immunological vigor (SIV) was performed using a comprehensive algorithm. Results Ingestion of NTM048-supplemented chocolate significantly improved SIV in the NTM048 group (18.6 ± 1.6) compared to that in the placebo group (17.8 ± 2.0) after 4 weeks (p = 0.049). Several immunological parameters (CD8+T cells, CD8+CD28+ T cells, and memory T cells) were significantly elevated in the NTM048 group as compared to the placebo group (all p < 0.05). In addition, T cell proliferation index at post-ingestion significantly increased compared with that at pre-ingestion in the NTM048 (p = 0.017) and placebo groups (p = 0.037), although no differences were observed between the two groups. Conclusion Our results suggest that ingestion of chocolate supplemented with NTM048 is effective against the age-related decline in T cell-related immune functions. Trial registration UMIN Clinical Trials Registry UMIN000021989. Registered 19 April 2016, https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000025321
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Affiliation(s)
- Reiko Kuroda
- Central Laboratory, LOTTE Co., Ltd., 1-1, Numakage 3-chome, Minami-ku, Saitama, 336-8601 Japan
| | - Hiroaki Higuchi
- Central Laboratory, LOTTE Co., Ltd., 1-1, Numakage 3-chome, Minami-ku, Saitama, 336-8601 Japan
| | - Keishirou Yoshida
- Central Laboratory, LOTTE Co., Ltd., 1-1, Numakage 3-chome, Minami-ku, Saitama, 336-8601 Japan
| | - Yasunori Yonejima
- Nitto Pharmaceutical Industries, Ltd., 35-3, Minamibiraki, Kamiueno-cho, Muko, Kyoto, 617-0006 Japan
| | - Keiko Hisa
- Nitto Pharmaceutical Industries, Ltd., 35-3, Minamibiraki, Kamiueno-cho, Muko, Kyoto, 617-0006 Japan
| | - Masanori Utsuyama
- 3Institute for Health and Life Science, Tokyo Medical & Dental University, 3-10, Kandasurugadai 10-chome, Chiyoda-ku, Tokyo, 101-0062 Japan.,4Department of Comprehensive Pathology, Tokyo Medical & Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
| | - Kenji Osawa
- Central Laboratory, LOTTE Co., Ltd., 1-1, Numakage 3-chome, Minami-ku, Saitama, 336-8601 Japan
| | - Katsuiku Hirokawa
- 3Institute for Health and Life Science, Tokyo Medical & Dental University, 3-10, Kandasurugadai 10-chome, Chiyoda-ku, Tokyo, 101-0062 Japan.,4Department of Comprehensive Pathology, Tokyo Medical & Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8510 Japan
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Miki T, Miyoshi T, Osawa K, Kohno K, Nakamura K, Itoh H. P5394N-3 polyunsaturated fatty acids added on a statin progress coronary artery calcium density rather than volume determined by computed tomography: comparison with a statin alone. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Miki
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - K Osawa
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - K Kohno
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - K Nakamura
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - H Itoh
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
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Ihdayhid AR, Norgaard BL, Gaur S, Leipsic J, Osawa K, Miyoshi T, Jensen J, Kimura T, Shiomi H, Erglis A, Jegere S, Oldroyd KG, Seneviratne S, Achenbach S, Ko BS. 3283Long-term prognostic value of non-invasive fractional flow reserve derived from coronary CT angiography (FFRct). Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A R Ihdayhid
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - B L Norgaard
- Aarhus University Hospital, Cardiology Department, Aarhus, Denmark
| | - S Gaur
- Aarhus University Hospital, Cardiology Department, Aarhus, Denmark
| | - J Leipsic
- University of British Columbia, Department of Radiology, Vancouver, Canada
| | - K Osawa
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - T Miyoshi
- Okayama University Hospital, Department of Cardiovascular Medicine, Okayama, Japan
| | - J Jensen
- Aarhus University Hospital, Cardiology Department, Aarhus, Denmark
| | - T Kimura
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - H Shiomi
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - A Erglis
- Paul Stradins Clinical University Hospital, Latvian Centre of Cardiology, Riga, Latvia
| | - S Jegere
- Paul Stradins Clinical University Hospital, Latvian Centre of Cardiology, Riga, Latvia
| | - K G Oldroyd
- Golden Jubilee National Hospital, West of Scotland Heart and Lung Centre, Clydebank, United Kingdom
| | - S Seneviratne
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
| | - S Achenbach
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - B S Ko
- Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health, Melbourne, Australia
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Oda M, Nishida I, Miyamoto I, Saeki K, Tanaka T, Kito S, Yamamoto N, Yada N, Yoshiga D, Matsumoto-Takeda S, Wakasugi-Sato N, Habu M, Kodama M, Kokuryo S, Osawa K, Nishimura S, Joujima T, Miyamura Y, Matsuo K, Tominaga K, Yoshioka I, Maki K, Morimoto Y. Significance and usefulness of imaging characteristics of gubernaculum tracts for the diagnosis of odontogenic tumors or cysts. PLoS One 2018; 13:e0199285. [PMID: 29979687 PMCID: PMC6034793 DOI: 10.1371/journal.pone.0199285] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 06/05/2018] [Indexed: 11/25/2022] Open
Abstract
We aimed to determine the significance and usefulness of imaging characteristics of gubernaculum tracts (GT) for the diagnosis of odontogenic tumors or cysts. This was a retrospective analysis of relationships between odontogenic or non-odontogenic tumors or cysts and the GT that were visualized using multi-detector computed tomography (MDCT). The relationship between the size of a mass and expansion of the GT in all odontogenic tumors or cysts to which GTs were contiguous on MDCT, was statistically analyzed. Intact or expanded GTs were detected in MDCT images on the top of almost all odontogenic tumors or cysts, but not on non-odontogenic tumors or cysts. Characteristic image findings regarding the relationship between the GT and the odontogenic mass were detected for the respective odontogenic tumors or cysts in which the GTs were contiguous to the mass on MDCT. In ameloblastomas, expansion of the GTs significantly and very strongly correlated with tumor size (r = 0.741, p = 0.0001), but this correlation was very weak in dentigerous cysts (r = 0.167, p = 0.028) and there was no correlation between these parameters in odontogenic keratocysts (r = -0.089, p = 0.557). The imaging characteristics of GTs at the top of masses should be very useful for both the differential diagnosis of the pathological diagnosis of odontogenic masses and for differentiation between odontogenic and non-odontogenic masses.
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Affiliation(s)
- Masafumi Oda
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Ikuko Nishida
- Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan
| | - Ikuya Miyamoto
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Katsura Saeki
- Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan
| | - Tatsurou Tanaka
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Shinji Kito
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Noriaki Yamamoto
- Department of Oral and Maxillofacial Surgery, Oita University, Oita, Japan
| | - Naomi Yada
- Division of Oral Pathology, Kyushu Dental University, Kitakyushu, Japan
| | - Daigo Yoshiga
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | | | - Nao Wakasugi-Sato
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Manabu Habu
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Masaaki Kodama
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Shinya Kokuryo
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Kenji Osawa
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Shun Nishimura
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Takaaki Joujima
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Yuichi Miyamura
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Kou Matsuo
- Division of Oral Pathology, Kyushu Dental University, Kitakyushu, Japan
| | - Kazuhiro Tominaga
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Izumi Yoshioka
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Kenshi Maki
- Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan
| | - Yasuhiro Morimoto
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
- * E-mail:
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Machiya A, Tsukamoto S, Ohte S, Kuratani M, Fujimoto M, Kumagai K, Osawa K, Suda N, Bullock AN, Katagiri T. Effects of FKBP12 and type II BMP receptors on signal transduction by ALK2 activating mutations associated with genetic disorders. Bone 2018; 111:101-108. [PMID: 29551750 DOI: 10.1016/j.bone.2018.03.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 02/08/2018] [Accepted: 03/14/2018] [Indexed: 01/01/2023]
Abstract
Various substitution mutations in ALK2, a transmembrane serine/threonine kinase receptor for bone morphogenetic proteins (BMPs), have been identified in patients with genetic disorders such as fibrodysplasia ossificans progressiva (FOP), diffuse intrinsic pontine glioma (DIPG) and heart defects. In this study, we characterized the ALK2 mutants R258G, G328V and F246Y, which were identified in patients with severe FOP, DIPG and unusual hereditary skeletal dysplasia, respectively. Both R258G and G328V were gain-of-function mutations, but F246Y was equivalent to wild-type ALK2. We also examined the effect of the suppressor FKBP12 on the signal transduction of a further 14 ALK2 mutations associated with FOP and/or DIPG. To varying extents FKBP12 over-expression suppressed the basal signaling induced by thirteen of the ALK2 mutants, whereas PF197-8L was uniquely resistant. In the PF197-8L mutant, the modelled ALK2 residue L197 induced a steric clash with the D36 residue in FKBP12 and dissociated their interaction. The co-expression of BMP type II receptors or stimulation with ligands relieved the suppression by FKBP12 by disrupting the interaction between mutant ALK2 and FKBP12. Taken together, FKBP12 binds to and suppresses mutant ALK2 proteins associated with FOP and DIPG, except for PF197-8L.
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Affiliation(s)
- Aiko Machiya
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan; Division of Orthodontics, Department of Human Development and Fostering, Meikai University School of Dentistry, Saitama, Japan
| | - Sho Tsukamoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan; Project of Clinical and Basic Research for FOP, Saitama Medical University, Saitama, Japan
| | - Satoshi Ohte
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan
| | - Mai Kuratani
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan
| | - Mai Fujimoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan; Division of Orthodontics, Department of Human Development and Fostering, Meikai University School of Dentistry, Saitama, Japan
| | - Keigo Kumagai
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan
| | - Kenji Osawa
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan; Ivy Dental Clinic, Fukuoka, Japan
| | - Naoto Suda
- Division of Orthodontics, Department of Human Development and Fostering, Meikai University School of Dentistry, Saitama, Japan
| | - Alex N Bullock
- Structural Genomics Consortium, University of Oxford, Oxford, UK
| | - Takenobu Katagiri
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Saitama, Japan; Project of Clinical and Basic Research for FOP, Saitama Medical University, Saitama, Japan.
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Miyamoto I, Yada N, Osawa K, Yoshioka I. Endocytoscopy for in situ real-time histology of oral mucosal lesions. Int J Oral Maxillofac Surg 2018; 47:896-899. [PMID: 29625719 DOI: 10.1016/j.ijom.2018.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 01/26/2018] [Accepted: 03/13/2018] [Indexed: 12/14/2022]
Abstract
This study investigated the utility of endocytoscopy, a novel emerging endoscopic system, for in situ real-time histology of oral mucosal lesions. Endocytoscopy involves the use of a contact light microscopy system with 380-fold magnification. With the development of endoscopic instruments, it has become possible to observe the abnormal microvascular and capillary patterns of tumour cells. The resolution of the endoscopic image is improved in situ, and a more detailed diagnosis is possible. In this study, endocytoscopy along with other diagnostic modalities was used in nine patients. Normal mucous membranes and oral malignant lesions were observed. Endocytoscopy enabled the pathological diagnosis of oral malignancies in situ and the observation of both structural and cytological atypia. In the future, it is expected that pathological diagnoses will be made in situ by direct viewing of living cells. This technique has the potential to allow an 'optical biopsy'.
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Affiliation(s)
- I Miyamoto
- Division of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Reconstructive Surgery, School of Dentistry, Iwate Medical University, Morioka, Iwate, Japan.
| | - N Yada
- Division of Oral Pathology, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - K Osawa
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - I Yoshioka
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
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14
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Nishimura S, Tanaka T, Oda M, Habu M, Kodama M, Yoshiga D, Osawa K, Kokuryo S, Miyamoto I, Kito S, Wakasugi-Sato N, Matsumoto-Takeda S, Joujima T, Miyamura Y, Hitomi S, Yamamoto N, Uehara M, Sasaguri M, Ono K, Yoshioka I, Tominaga K, Morimoto Y. Functional evaluation of swallowing in patients with tongue cancer before and after surgery using high-speed continuous magnetic resonance imaging based on T2-weighted sequences. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 125:88-98. [PMID: 29128287 DOI: 10.1016/j.oooo.2017.09.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/21/2017] [Accepted: 09/20/2017] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The aim of this study was to determine the usefulness of evaluating the function of swallowing before and after surgery in patients with tongue cancer by using T2-weighted sequences of high-speed continuous magnetic resonance imaging (HSCMRI). STUDY DESIGN The imaging findings and related parameters on HSCMRI along with those on routine MRI examinations before and after surgery were examined in 19 patients with tongue cancer. In addition, changes in various parameters during 1 year after surgery were evaluated in 10 patients. RESULTS In most patients examined, the direction of flow to the esophagus could be seen on HSCMRI before and after surgery. Significant correlations were observed among 4 parameters and in the responses to a dysphagia questionnaire. CONCLUSIONS The results of the present study suggest that the dynamics of swallowing can be directly visualized on HSCMRI by using 4 parameters that permit the evaluation of changes before and after surgery, and this enables objective evaluation of patients' swallowing complaints.
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Affiliation(s)
- Shun Nishimura
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Tatsurou Tanaka
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Masafumi Oda
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Manabu Habu
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Masaaki Kodama
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Daigo Yoshiga
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Kenji Osawa
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Shinya Kokuryo
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Ikuya Miyamoto
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Shinji Kito
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Nao Wakasugi-Sato
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | | | - Takaaki Joujima
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Yuichi Miyamura
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Suzuro Hitomi
- Division of Physiology, Kyushu Dental University, Kitakyushu, Japan
| | - Noriaki Yamamoto
- Department of Dentistry and Oral-Maxillo-Facial Surgery, Oita University, Oita, Japan
| | - Masataka Uehara
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Masaaki Sasaguri
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Kentaro Ono
- Division of Physiology, Kyushu Dental University, Kitakyushu, Japan
| | - Izumi Yoshioka
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Kazuhiro Tominaga
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Yasuhiro Morimoto
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan; Center for Oral Biological Research, Kyushu Dental University, Kitakyushu, Japan.
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15
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Kito S, Koga H, Oda M, Tanaka T, Miyamoto I, Kodama M, Habu M, Kokuryo S, Osawa K, Yamamoto N, Matsumoto-Takeda S, Wakasugi-Sato N, Kawanabe N, Yoshiga D, Nishimura S, Joujima T, Kito-Shingaki A, Uehara M, Sasaguri M, Morimoto Y. Changes in the distributions of fluorine-18-labelled fluoro-2-deoxy-d-glucose accumulation into tongue-related muscles after dissection in patients with tongue cancer. Dentomaxillofac Radiol 2017; 46:20160396. [PMID: 28467114 DOI: 10.1259/dmfr.20160396] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To elucidate the changes in the distributions of fluorine-18-labelled fluoro-2-deoxy-d-glucose (18F-FDG) accumulation in the tongue muscles of patients following four kinds of surgical operations for tongue cancers. METHODS The changes in the distributions of 18F-FDG accumulations in the tongue muscles on positron emission tomography (PET)-CT, in association with imaging findings on CT and MRI, were retrospectively analyzed before and after four kinds of surgical operations for 50 patients with tongue cancers. RESULTS 18F-FDG-PET-positive areas appeared at the back of the intrinsic muscles of the tongue after invasive surgery for tongue cancers despite the absence of abnormal findings on CT and MRI. A correlation between the standardized uptake value maximum of 18F-FDG in the intrinsic muscles and the degree of invasiveness of the surgical procedures for tongue cancers (r = 0.539, p < 0.01) was found. CONCLUSIONS It is important to pay attention to the changes in 18F-FDG distributions in the intrinsic muscles of the tongue before and after invasive surgery despite the absence of abnormal findings on CT and MRI when evaluating the tongue on 18F-FDG-PET.
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Affiliation(s)
- Shinji Kito
- 1 Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Hirofumi Koga
- 2 Kitakyushu PET Center, Nishinippon Sangyoeiseikai, Kitakyushu, Japan
| | - Masafumi Oda
- 1 Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Tatsurou Tanaka
- 1 Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Ikuya Miyamoto
- 3 Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Masaaki Kodama
- 4 Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Manabu Habu
- 4 Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Shinya Kokuryo
- 3 Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Kenji Osawa
- 3 Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Noriaki Yamamoto
- 5 Department of Oral and Maxillofacial Surgery, Oita University, Oita, Japan
| | | | - Nao Wakasugi-Sato
- 1 Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Noriaki Kawanabe
- 6 Department of Orthodontics, Okayama University, Okayama, Japan
| | - Daigo Yoshiga
- 4 Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Shun Nishimura
- 1 Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Takaaki Joujima
- 1 Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Ayae Kito-Shingaki
- 7 Division of Comprehensive Dentistry, Kyushu Dental University, Kitakyushu, Japan
| | - Masataka Uehara
- 4 Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Masaaki Sasaguri
- 4 Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Yasuhiro Morimoto
- 1 Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan.,8 Center for Oral Biological Research, Kyushu Dental University, Kitakyushu, Japan
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16
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Kokabu S, Nakatomi C, Matsubara T, Ono Y, Addison WN, Lowery JW, Urata M, Hudnall AM, Hitomi S, Nakatomi M, Sato T, Osawa K, Yoda T, Rosen V, Jimi E. The transcriptional co-repressor TLE3 regulates myogenic differentiation by repressing the activity of the MyoD transcription factor. J Biol Chem 2017; 292:12885-12894. [PMID: 28607151 DOI: 10.1074/jbc.m116.774570] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 06/08/2017] [Indexed: 11/06/2022] Open
Abstract
Satellite cells are skeletal muscle stem cells that provide myonuclei for postnatal muscle growth, maintenance, and repair/regeneration in adults. Normally, satellite cells are mitotically quiescent, but they are activated in response to muscle injury, in which case they proliferate extensively and exhibit up-regulated expression of the transcription factor MyoD, a master regulator of myogenesis. MyoD forms a heterodimer with E proteins through their basic helix-loop-helix domain, binds to E boxes in the genome and thereby activates transcription at muscle-specific promoters. The central role of MyoD in muscle differentiation has increased interest in finding potential MyoD regulators. Here we identified transducin-like enhancer of split (TLE3), one of the Groucho/TLE family members, as a regulator of MyoD function during myogenesis. TLE3 was expressed in activated and proliferative satellite cells in which increased TLE3 levels suppressed myogenic differentiation, and, conversely, reduced TLE3 levels promoted myogenesis with a concomitant increase in proliferation. We found that, via its glutamine- and serine/proline-rich domains, TLE3 interferes with MyoD function by disrupting the association between the basic helix-loop-helix domain of MyoD and E proteins. Our findings indicate that TLE3 participates in skeletal muscle homeostasis by dampening satellite cell differentiation via repression of MyoD transcriptional activity.
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Affiliation(s)
- Shoichiro Kokabu
- Divisions of Molecular Signaling and Biochemistry, Kyushu Dental University, Kitakyushu 803-8580, Japan; Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Saitama Medical University, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan; Department of Developmental Biology, Harvard School of Dental Medicine, Boston, Massachusetts 02115.
| | - Chihiro Nakatomi
- Divisions of Molecular Signaling and Biochemistry, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Takuma Matsubara
- Divisions of Molecular Signaling and Biochemistry, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Yusuke Ono
- Musculoskeletal Molecular Biology Research Group, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8102, Japan
| | - William N Addison
- Research Unit, Department of Human Genetics, Shriners Hospitals for Children, McGill University, Montreal, Quebec H4A 0A9, Canada
| | - Jonathan W Lowery
- Division of Biomedical Science, College of Osteopathic Medicine, Marian University, Indianapolis, Indiana 46222
| | - Mariko Urata
- Divisions of Molecular Signaling and Biochemistry, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Aaron M Hudnall
- Division of Biomedical Science, College of Osteopathic Medicine, Marian University, Indianapolis, Indiana 46222
| | - Suzuro Hitomi
- Division of Physiology, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Mitsushiro Nakatomi
- Division of Anatomy, Department of Health Promotion, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Tsuyoshi Sato
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Saitama Medical University, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Kenji Osawa
- Division of Oral Medicine, Department of Science of Physical Functions, Kyushu Dental University, Kitakyushu 803-8580, Japan
| | - Tetsuya Yoda
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Saitama Medical University, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Vicki Rosen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, Massachusetts 02115
| | - Eijiro Jimi
- Divisions of Molecular Signaling and Biochemistry, Kyushu Dental University, Kitakyushu 803-8580, Japan; Oral Health Brain Health Total Health, Laboratory of Molecular and Cellular Biochemistry, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan
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17
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Oda M, Nishida I, Miyamoto I, Habu M, Yoshiga D, Kodama M, Osawa K, Tanaka T, Kito S, Matsumoto-Takeda S, Wakasugi-Sato N, Nishimura S, Tominaga K, Yoshioka I, Maki K, Morimoto Y. Characteristics of the gubernaculum tracts in mesiodens and maxillary anterior teeth with delayed eruption on MDCT and CBCT. Oral Surg Oral Med Oral Pathol Oral Radiol 2016; 122:511-6. [PMID: 27651289 DOI: 10.1016/j.oooo.2016.07.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 07/02/2016] [Accepted: 07/09/2016] [Indexed: 11/20/2022]
Abstract
OBJECTIVES To elucidate the characteristics of the gubernaculum tracts (GTs) in maxillary anterior teeth with normal or delayed eruption and in mesiodens by using multidetector computed tomography and cone beam computed tomography. STUDY DESIGN The characteristics of GTs in maxillary anterior teeth of 205 patients with impacted mesiodens were retrospectively analyzed by using multidetector computed tomography and cone beam computed tomography. The GTs of teeth with normal or delayed eruption and the GTs of mesiodens were examined. RESULTS The detection ratio of GTs in impacted mesiodens and anterior teeth with delayed eruption was significantly lower than in teeth with normal eruption. A significant difference in the angulation was found between normal and delayed eruptions. Almost all detectable GTs in the inverted mesiodens were derived from the incisive canal, while the remaining were from the alveolar crest. The connecting area of major GTs to tooth in inverted mesiodens was the cervical or root area, but in all other anterior teeth, it was the crown area. CONCLUSIONS GTs of inverted mesiodens may exhibit characteristics that are different from those of normal GTs when the teeth and/or the palate are developing.
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Affiliation(s)
- Masafumi Oda
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Ikuko Nishida
- Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan
| | - Ikuya Miyamoto
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Manabu Habu
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Daigo Yoshiga
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Masaaki Kodama
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Kenji Osawa
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Tatsurou Tanaka
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Shinji Kito
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | | | - Nao Wakasugi-Sato
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Shun Nishimura
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan
| | - Kazuhiro Tominaga
- Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan
| | - Izumi Yoshioka
- Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan
| | - Kenshi Maki
- Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan
| | - Yasuhiro Morimoto
- Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan; Center for Oral Biological Research, Kyushu Dental University, Kitakyushu, Japan.
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18
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Miyoshi T, Osawa K, Ito H. Non-alcoholic fatty liver disease and coronary plaque characteristics detected by coronary ct angiography. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Osawa K, Fukushima H, Jimi E. The role of nuclear factor-κB signaling in bone formation: One bite provides dual tastes. J Oral Biosci 2015. [DOI: 10.1016/j.job.2014.08.002] [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: 10/24/2022]
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20
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Takagaki N, Kodama Y, Morita D, Tokumoto T, Sakurai K, Arakawa T, Osawa K. Enzymatic Deodorization by the Extract of Rubus Suavissimus with Peroxidase. J JPN SOC FOOD SCI 2015. [DOI: 10.3136/nskkk.62.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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21
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Fujimoto M, Ohte S, Osawa K, Miyamoto A, Tsukamoto S, Mizuta T, Kokabu S, Suda N, Katagiri T. Mutant activin-like kinase 2 in fibrodysplasia ossificans progressiva are activated via T203 by BMP type II receptors. Mol Endocrinol 2015; 29:140-52. [PMID: 25354296 PMCID: PMC5414771 DOI: 10.1210/me.2014-1301] [Citation(s) in RCA: 21] [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] [Received: 09/17/2014] [Accepted: 10/24/2014] [Indexed: 11/19/2022] Open
Abstract
Fibrodysplasia ossificans progressiva (FOP) is a genetic disorder characterized by progressive heterotopic ossification in soft tissues, such as the skeletal muscles. FOP has been shown to be caused by gain-of-function mutations in activin receptor-like kinase (ALK)-2, which is a type I receptor for bone morphogenetic proteins (BMPs). In the present study, we examined the molecular mechanisms that underlie the activation of intracellular signaling by mutant ALK2. Mutant ALK2 from FOP patients enhanced the activation of intracellular signaling by type II BMP receptors, such as BMPR-II and activin receptor, type II B, whereas that from heart disease patients did not. This enhancement was dependent on the kinase activity of the type II receptors. Substitution mutations at all nine serine and threonine residues in the ALK2 glycine- and serine-rich domain simultaneously inhibited this enhancement by the type II receptors. Of the nine serine and threonine residues in ALK2, T203 was found to be critical for the enhancement by type II receptors. The T203 residue was conserved in all of the BMP type I receptors, and these residues were essential for intracellular signal transduction in response to ligand stimulation. The phosphorylation levels of the mutant ALK2 related to FOP were higher than those of wild-type ALK2 and were further increased by the presence of type II receptors. The phosphorylation levels of ALK2 were greatly reduced in mutants carrying a mutation at T203, even in the presence of type II receptors. These findings suggest that the mutant ALK2 related to FOP is enhanced by BMP type II receptors via the T203-regulated phosphorylation of ALK2.
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Affiliation(s)
- Mai Fujimoto
- Division of Pathophysiology (M.F., S.O., K.O., A.M., S.T., T.M., S.K., T.K.), Research Center for Genomic Medicine, Saitama Medical University, Hidaka-shi, Saitama 350-1241, Japan; Division of Orthodontics (M.F., N.S.), Department of Human Development and Fostering, Meikai University School of Dentistry, Sakado-shi, Saitama 350-0283, Japan; Division of Molecular Signaling and Biochemistry (S.K.), Department of Health Promotion, Kyushu Dental University, Kitakyusyu, Fukuoka 803-8580, Japan
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Tsukamoto S, Mizuta T, Fujimoto M, Ohte S, Osawa K, Miyamoto A, Yoneyama K, Murata E, Machiya A, Jimi E, Kokabu S, Katagiri T. Smad9 is a new type of transcriptional regulator in bone morphogenetic protein signaling. Sci Rep 2014; 4:7596. [PMID: 25534700 PMCID: PMC4274517 DOI: 10.1038/srep07596] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Accepted: 12/03/2014] [Indexed: 01/23/2023] Open
Abstract
Smad1, Smad5 and Smad9 (also known as Smad8) are activated by phosphorylation by bone morphogenetic protein (BMP)-bound type I receptor kinases. We examined the role of Smad1, Smad5, and Smad9 by creating constitutively active forms (Smad(DVD)). Transcriptional activity of Smad9(DVD) was lower than that of Smad1(DVD) or Smad5(DVD), even though all three Smad(DVD)s associated with Smad4 and bound to the target DNA. The linker region of Smad9 was sufficient to reduce transcriptional activity. Smad9 expression was increased by the activation of BMP signaling, similar to that of inhibitory Smads (I-Smads), and Smad9 reduced BMP activity. In contrast to I-Smads, however, Smad9 did not inhibit the type I receptor kinase and suppressed the constitutively active Smad1(DVD). Smad9 formed complexes with Smad1 and bound to DNA but suppressed the transcription of the target gene. Taken together, our findings suggest that Smad9 is a new type of transcriptional regulator in BMP signaling.
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Affiliation(s)
- S. Tsukamoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - T. Mizuta
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - M. Fujimoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - S. Ohte
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - K. Osawa
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - A. Miyamoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - K. Yoneyama
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - E. Murata
- School of Medical Technology and Health, Faculty of Health and Medical Care, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - A. Machiya
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - E. Jimi
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu-shi, Fukuoka 803-8580, Japan
| | - S. Kokabu
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - T. Katagiri
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
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23
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Tada Y, Kokabu S, Sugiyama G, Nakatomi C, Aoki K, Fukushima H, Osawa K, Sugamori Y, Ohya K, Okamoto M, Fujikawa T, Itai A, Matsuo K, Watanabe S, Jimi E. The novel IκB kinase β inhibitor IMD-0560 prevents bone invasion by oral squamous cell carcinoma. Oncotarget 2014; 5:12317-30. [PMID: 25373602 PMCID: PMC4322973 DOI: 10.18632/oncotarget.2640] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 10/28/2014] [Indexed: 12/27/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) cells display significantly augmented nuclear factor-κB (NF-κB) activity, and inhibiting this activity suppresses malignant tumor characteristics. Thus, we evaluated the effect of IMD-0560, a novel inhibitor of IκB kinase (IKK) β that is under assessment in a clinical trial of rheumatoid arthritis, on bone invasion by the mouse OSCC cell line SCCVII. We examined the inhibitory effects of IMD-0560 on NF-κB activity and tumor invasion using human OSCC cell lines and SCCVII cells in vitro. Using a mouse model of jaw bone invasion by SCCVII cells, we assessed the inhibitory effect of IMD-0560 on jaw bone invasion, tumor growth, and matrix degradation in vivo. IMD-0560 suppressed the nuclear translocation of NF-κB and the degradation of IκBα in OSCC cells. IMD-0560 also inhibited invasion by suppressing matrix metalloproteinase-9 (MMP-9) production in OSCC cells. IMD-0560 protected against zygoma and mandible destruction by SCCVII cells, reduced the number of osteoclasts by inhibiting receptor activator of NF-κB ligand (RANKL) expression in osteoblastic cells and SCCVII cells, increased SCCVII cell death and suppressed cell proliferation and MMP-9 production in SCCVII cells. Based on these results, IMD-0560 may represent a new therapeutic agent for bone invasion by OSCC cells.
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Affiliation(s)
- Yukiyo Tada
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
- Division of Dental Anesthesiology, Department of Control of Physical Functions, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
| | - Shoichiro Kokabu
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
| | - Goro Sugiyama
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
| | - Chihiro Nakatomi
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
| | - Kazuhiro Aoki
- Section of Pharmacology, Department of Bio-Matrix, Graduate School, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo, Japan
| | - Hidefumi Fukushima
- Department of Physiological Sciences and Molecular Biology, Fukuoka Dental College, Fukuoka, Tamura, Sawara-ku, Fukuoka, Japan
| | - Kenji Osawa
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, Yamane, Hidaka-shi, Saitama, Japan
| | - Yasutaka Sugamori
- Section of Pharmacology, Department of Bio-Matrix, Graduate School, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo, Japan
| | - Keiichi Ohya
- Section of Pharmacology, Department of Bio-Matrix, Graduate School, Tokyo Medical and Dental University, Yushima, Bunkyo-ku, Tokyo, Japan
| | - Masato Okamoto
- Department of Advanced Immunotherapeutics, Kitasato University School of Pharmacy, Shirokane, Minato-ku, Tokyo, Japan
| | - Tomoyuki Fujikawa
- Institute of Medical Molecular Design Inc (IMMD Inc), Hongo, Bunkyo-ku, Tokyo, Japan
| | - Akiko Itai
- Institute of Medical Molecular Design Inc (IMMD Inc), Hongo, Bunkyo-ku, Tokyo, Japan
| | - Kou Matsuo
- Division of Oral Pathology, Department of Health Promotion, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
| | - Seiji Watanabe
- Division of Dental Anesthesiology, Department of Control of Physical Functions, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
| | - Eijiro Jimi
- Division of Molecular Signaling and Biochemistry, Department of Health Promotion, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
- Center for Oral Biological Research, Kyushu Dental University, Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
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24
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Fujimoto M, Ohte S, Shin M, Yoneyama K, Osawa K, Miyamoto A, Tsukamoto S, Mizuta T, Kokabu S, Machiya A, Okuda A, Suda N, Katagiri T. Establishment of a novel model of chondrogenesis using murine embryonic stem cells carrying fibrodysplasia ossificans progressiva-associated mutant ALK2. Biochem Biophys Res Commun 2014; 455:347-52. [PMID: 25446088 DOI: 10.1016/j.bbrc.2014.11.012] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 11/07/2014] [Indexed: 01/05/2023]
Abstract
Fibrodysplasia ossificans progressiva (FOP) is a genetic disorder characterized by heterotopic endochondral ossification in soft tissue. A mutation in the bone morphogenetic protein (BMP) receptor ALK2, R206H, has been identified in patients with typical FOP. In the present study, we established murine embryonic stem (ES) cells that express wild-type human ALK2 or typical mutant human ALK2 [ALK2(R206H)] under the control of the Tet-Off system. Although wild-type ALK2 and mutant ALK2(R206H) were expressed in response to a withdrawal of doxycycline (Dox), BMP signaling was activated only in the mutant ALK2(R206H)-expressing cells without the addition of exogenous BMPs. The Dox-dependent induction of BMP signaling was blocked by a specific kinase inhibitor of the BMP receptor. The mutant ALK2(R206H)-carrying cells showed Dox-regulated chondrogenesis in vitro, which occurred in co-operation with transforming growth factor-β1 (TGF-β1). Overall, our ES cells are useful for studying the molecular mechanisms of heterotopic ossification in FOP in vitro and for developing novel inhibitors of chondrogenesis induced by mutant ALK2(R206H) associated with FOP.
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Affiliation(s)
- Mai Fujimoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan; Division of Orthodontics, Department of Human Development and Fostering, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado-shi, Saitama 350-0283, Japan
| | - Satoshi Ohte
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Masashi Shin
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Katsumi Yoneyama
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Kenji Osawa
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Arei Miyamoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Sho Tsukamoto
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Takato Mizuta
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Shoichiro Kokabu
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Aiko Machiya
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan; Division of Orthodontics, Department of Human Development and Fostering, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado-shi, Saitama 350-0283, Japan
| | - Akihiko Okuda
- Division of Developmental Biology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan
| | - Naoto Suda
- Division of Orthodontics, Department of Human Development and Fostering, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado-shi, Saitama 350-0283, Japan
| | - Takenobu Katagiri
- Division of Pathophysiology, Research Center for Genomic Medicine, Saitama Medical University, 1397-1 Yamane, Hidaka-shi, Saitama 350-1241, Japan.
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25
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Shigemura K, Takase R, Osawa K, Takaba K, Nomi M, Fujisawa M, Arakawa S. Emergence and prevention measures for multidrug resistant Pseudomonas aeruginosa in catheter-associated urinary tract infection in spinal cord injury patients. Spinal Cord 2014; 53:70-4. [DOI: 10.1038/sc.2014.154] [Citation(s) in RCA: 7] [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] [Received: 01/14/2014] [Revised: 07/08/2014] [Accepted: 08/05/2014] [Indexed: 11/10/2022]
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Taniguchi R, Fukushima H, Osawa K, Maruyama T, Yasuda H, Weih F, Doi T, Maki K, Jimi E. RelB-induced expression of Cot, an MAP3K family member, rescues RANKL-induced osteoclastogenesis in alymphoplasia mice by promoting NF-κB2 processing by IKKα. J Biol Chem 2014; 289:7349-61. [PMID: 24488495 DOI: 10.1074/jbc.m113.538314] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The alternative nuclear factor-κB (NF-κB) pathway, mainly the RelB-p52 heterodimer, plays important roles in bone metabolism through an unknown mechanism. We have previously reported that alymphoplasia (aly/aly) mice, which lack active NF-κB-inducing kinase (NIK), show mild osteopetrosis due to the inhibition of osteoclastogenesis. p100 retains RelB in the cytoplasm and inhibits RANKL-induced osteoclastogenesis in aly/aly cells. Furthermore, the overexpression of RelB in aly/aly cells rescues RANKL-induced osteoclastogenesis by inducing p100 processing. In contrast, the overexpression of p65 in aly/aly cells has no effect. However, the overexpression of RelB fails to rescue RANKL-induced osteoclastogenesis in the presence of p100ΔGRR, which cannot be processed to p52, suggesting that p100 processing is a key step in RelB-rescued, RANKL-induced osteoclastogenesis in aly/aly cells. In this study, Cot (cancer Osaka thyroid), an MAP3K, was up-regulated by RelB overexpression. Analysis of the Cot promoter demonstrated that p65 and RelB bound to the distal NF-κB-binding site and that RelB but not p65 bound to the proximal NF-κB-binding site in the Cot promoter. The knocking down of Cot expression significantly reduced the RANKL-induced osteoclastogenesis induced by RelB overexpression. The phosphorylation of IKKα at threonine 23 and its kinase activity were indispensable for the processing of p100 and osteoclastogenesis by RelB-induced Cot. Finally, constitutively activated Akt enhanced osteoclastogenesis by RelB-induced Cot, and a dominant-negative form of Akt significantly inhibited it. Taken together, these results indicate that the overexpression of RelB restores RANKL-induced osteoclastogenesis by activation of Akt/Cot/IKKα-induced p100 processing.
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Affiliation(s)
- Rei Taniguchi
- From the Division of Molecular Signaling and Biochemistry and
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27
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Abdovic E, Abdovic S, Hristova K, Hristova K, Katova T, Katova T, Gocheva N, Gocheva N, Pavlova M, Pavlova M, Gurzun MM, Ionescu A, Canpolat U, Yorgun H, Sunman H, Sahiner L, Kaya E, Ozer N, Tokgozoglu L, Kabakci G, Aytemir K, Oto A, Gonella A, D'ascenzo F, Casasso F, Conte E, Margaria F, Grosso Marra W, Frea S, Morello M, Bobbio M, Gaita F, Seo H, Lee S, Lee J, Yoon Y, Park E, Kim H, Park S, Lee H, Kim Y, Sohn D, Nemes A, Domsik P, Kalapos A, Orosz A, Lengyel C, Forster T, Enache R, Muraru D, Popescu B, Calin A, Nastase O, Botezatu D, Purcarea F, Rosca M, Beladan C, Ginghina C, Canpolat U, Aytemir K, Ozer N, Yorgun H, Sahiner L, Kaya E, Oto A, Muraru D, Piasentini E, Mihaila S, Padayattil Jose' S, Peluso D, Ucci L, Naso P, Puma L, Iliceto S, Badano L, Cikes M, Jakus N, Sutherland G, Haemers P, D'hooge J, Claus P, Yurdakul S, Oner F, Direskeneli H, Sahin T, Cengiz B, Ercan G, Bozkurt A, Aytekin S, Osa Saez AM, Rodriguez-Serrano M, Lopez-Vilella R, Buendia-Fuentes F, Domingo-Valero D, Quesada-Carmona A, Miro-Palau V, Arnau-Vives M, Palencia-Perez M, Rueda-Soriano J, Lipczynska M, Piotr Szymanski P, Anna Klisiewicz A, Lukasz Mazurkiewicz L, Piotr Hoffman P, Kim K, Cho S, Ahn Y, Jeong M, Cho J, Park J, Chinali M, Franceschini A, Matteucci M, Doyon A, Esposito C, Del Pasqua A, Rinelli G, Schaefer F, Kowalik E, Klisiewicz A, Rybicka J, Szymanski P, Biernacka E, Hoffman P, Lee S, Kim W, Yun H, Jung L, Kim E, Ko J, Ruddox V, Norum I, Edvardsen T, Baekkevar M, Otterstad J, Erdei T, Edwards J, Braim D, Yousef Z, Fraser A, Melcher A, Reiner B, Hansen A, Strandberg L, Caidahl K, Wellnhofer E, Kriatselis C, Gerd-Li H, Furundzija V, Thnabalasingam U, Fleck E, Graefe M, Park Y, Moon J, Ahn T, Baydar O, Kadriye Kilickesmez K, Ugur Coskun U, Polat Canbolat P, Veysel Oktay V, Umit Yasar Sinan U, Okay Abaci O, Cuneyt Kocas C, Sinan Uner S, Serdar Kucukoglu S, Ferferieva V, Claus P, Rademakers F, D'hooge J, Le TT, Wong P, Tee N, Huang F, Tan R, Altman M, Logeart D, Bergerot C, Gellen B, Pare C, Gerard S, Sirol M, Vicaut E, Mercadier J, Derumeaux GA, Park TH, Park JI, Shin SW, Yun SH, Lee JE, Makavos G, Kouris N, Keramida K, Dagre A, Ntarladimas I, Kostopoulos V, Damaskos D, Olympios C, Leong D, Piers S, Hoogslag G, Hoke U, Thijssen J, Ajmone Marsan N, Schalij M, Bax J, Zeppenfeld K, Delgado V, Rio P, Branco L, Galrinho A, Cacela D, Abreu J, Timoteo A, Teixeira P, Pereira-Da-Silva T, Selas M, Cruz Ferreira R, Popa BA, Zamfir L, Novelli E, Lanzillo G, Karazanishvili L, Musica G, Stelian E, Benea D, Diena M, Cerin G, Fusini L, Mirea O, Tamborini G, Muratori M, Gripari P, Ghulam Ali S, Cefalu' C, Maffessanti F, Andreini D, Pepi M, Mamdoo F, Goncalves A, Peters F, Matioda H, Govender S, Dos Santos C, Essop M, Kuznetsov VA, Yaroslavskaya EI, Pushkarev GS, Krinochkin DV, Kolunin GV, Bennadji A, Hascoet S, Dulac Y, Hadeed K, Peyre M, Ricco L, Clement L, Acar P, Ding W, Zhao Y, Lindqvist P, Nilson J, Winter R, Holmgren A, Ruck A, Henein M, Illatopa V, Cordova F, Espinoza D, Ortega J, Cavalcante J, Patel M, Katz W, Schindler J, Crock F, Khanna M, Khandhar S, Tsuruta H, Kohsaka S, Murata M, Yasuda R, Tokuda H, Kawamura A, Maekawa Y, Hayashida K, Fukuda K, Le Tourneau T, Kyndt F, Lecointe S, Duval D, Rimbert A, Merot J, Trochu J, Probst V, Le Marec H, Schott J, Veronesi F, Addetia K, Corsi C, Lamberti C, Lang R, Mor-Avi V, Gjerdalen GF, Hisdal J, Solberg E, Andersen T, Radunovic Z, Steine K, Maffessanti F, Gripari P, Tamborini G, Muratori M, Fusini L, Ferrari C, Caiani E, Alamanni F, Bartorelli A, Pepi M, D'ascenzi F, Cameli M, Iadanza A, Lisi M, Reccia R, Curci V, Sinicropi G, Henein M, Pierli C, Mondillo S, Rekhraj S, Hoole S, Mcnab D, Densem C, Boyd J, Parker K, Shapiro L, Rana B, Kotrc M, Vandendriessche T, Bartunek J, Claeys M, Vanderheyden M, Paelinck B, De Bock D, De Maeyer C, Vrints C, Penicka M, Silveira C, Albuquerque E, Lamprea D, Larangeiras V, Moreira C, Victor Filho M, Alencar B, Silveira A, Castillo J, Zambon E, Iorio A, Carriere C, Pantano A, Barbati G, Bobbo M, Abate E, Pinamonti B, Di Lenarda A, Sinagra G, Salemi VMC, Tavares L, Ferreira Filho J, Oliveira A, Pessoa F, Ramires F, Fernandes F, Mady C, Cavarretta E, Lotrionte M, Abbate A, Mezzaroma E, De Marco E, Peruzzi M, Loperfido F, Biondi-Zoccai G, Frati G, Palazzoni G, Park TH, Lee JE, Lee DH, Park JS, Park K, Kim MH, Kim YD, Van 'T Sant J, Gathier W, Leenders G, Meine M, Doevendans P, Cramer M, Poyhonen P, Kivisto S, Holmstrom M, Hanninen H, Schnell F, Betancur J, Daudin M, Simon A, Carre F, Tavard F, Hernandez A, Garreau M, Donal E, Calore C, Muraru D, Badano L, Melacini P, Mihaila S, Denas G, Naso P, Casablanca S, Santi F, Iliceto S, Aggeli C, Venieri E, Felekos I, Anastasakis A, Ritsatos K, Kakiouzi V, Kastellanos S, Cutajar I, Stefanadis C, Palecek T, Honzikova J, Poupetova H, Vlaskova H, Kuchynka P, Linhart A, Elmasry O, Mohamed M, Elguindy W, Bishara P, Garcia-Gonzalez P, Cozar-Santiago P, Bochard-Villanueva B, Fabregat-Andres O, Cubillos-Arango A, Valle-Munoz A, Ferrer-Rebolleda J, Paya-Serrano R, Estornell-Erill J, Ridocci-Soriano F, Jensen M, Havndrup O, Christiansen M, Andersen P, Axelsson A, Kober L, Bundgaard H, Karapinar H, Kaya A, Uysal E, Guven A, Kucukdurmaz Z, Oflaz M, Deveci K, Sancakdar E, Gul I, Yilmaz A, Tigen MK, Karaahmet T, Dundar C, Yalcinsoy M, Tasar O, Bulut M, Takir M, Akkaya E, Jedrzejewska I, Braksator W, Krol W, Swiatowiec A, Dluzniewski M, Lipari P, Bonapace S, Zenari L, Valbusa F, Rossi A, Lanzoni L, Molon G, Canali G, Campopiano E, Barbieri E, Rueda Calle E, Alfaro Rubio F, Gomez Gonzalez J, Gonzalez Santos P, Cameli M, Lisi M, Focardi M, D'ascenzi F, Solari M, Galderisi M, Mondillo S, Pratali L, Bruno RM, Corciu A, Comassi M, Passera M, Gastaldelli A, Mrakic-Sposta S, Vezzoli A, Picano E, Perry R, Penhall A, De Pasquale C, Selvanayagam J, Joseph M, Simova II, Katova TM, Kostova V, Hristova K, Lalov I, D'ascenzi F, Pelliccia A, Natali B, Cameli M, Alvino F, Zorzi A, Corrado D, Bonifazi M, Mondillo S, Rees E, Rakebrandt F, Rees D, Halcox J, Fraser A, O'driscoll J, Lau N, Perez-Lopez M, Sharma R, Lichodziejewska B, Goliszek S, Kurnicka K, Kostrubiec M, Dzikowska Diduch O, Krupa M, Grudzka K, Ciurzynski M, Palczewski P, Pruszczyk P, Gheorghe L, Castillo Ortiz J, Del Pozo Contreras R, Calle Perez G, Sancho Jaldon M, Cabeza Lainez P, Vazquez Garcia R, Fernandez Garcia P, Chueca Gonzalez E, Arana Granados R, Zhao X, Xu X, Bai Y, Qin Y, Leren I, Hasselberg N, Saberniak J, Leren T, Edvardsen T, Haugaa K, Daraban AM, Sutherland G, Claus P, Werner B, Gewillig M, Voigt J, Santoro A, Ierano P, De Stefano F, Esposito R, De Palma D, Ippolito R, Tufano A, Galderisi M, Costa R, Fischer C, Rodrigues A, Monaco C, Lira Filho E, Vieira M, Cordovil A, Oliveira E, Mohry S, Gaudron P, Niemann M, Herrmann S, Strotmann J, Beer M, Hu K, Bijnens B, Ertl G, Weidemann F, Baktir A, Sarli B, Cicek M, Karakas M, Saglam H, Arinc H, Akil M, Kaya H, Ertas F, Bilik M, Yildiz A, Oylumlu M, Acet H, Aydin M, Yuksel M, Alan S, O'driscoll J, Gravina A, Di Fino S, Thompson M, Karthigelasingham A, Ray K, Sharma R, De Chiara B, Russo C, Alloni M, Belli O, Spano' F, Botta L, Palmieri B, Martinelli L, Giannattasio C, Moreo A, Mateescu A, La Carrubba S, Vriz O, Di Bello V, Carerj S, Zito C, Ginghina C, Popescu B, Nicolosi G, Antonini-Canterin F, Malev E, Omelchenko M, Vasina L, Luneva E, Zemtsovsky E, Cikes M, Velagic V, Gasparovic H, Kopjar T, Colak Z, Hlupic L, Biocina B, Milicic D, Tomaszewski A, Kutarski A, Poterala M, Tomaszewski M, Brzozowski W, Kijima Y, Akagi T, Nakagawa K, Ikeda M, Watanabe N, Ueoka A, Takaya Y, Oe H, Toh N, Ito H, Bochard Villanueva B, Paya-Serrano R, Fabregat-Andres O, Garcia-Gonzalez P, Perez-Bosca J, Cubillos-Arango A, Chacon-Hernandez N, Higueras-Ortega L, De La Espriella-Juan R, Ridocci-Soriano F, Noack T, Mukherjee C, Ionasec R, Voigt I, Kiefer P, Hoebartner M, Misfeld M, Mohr FW, Seeburger J, Daraban AM, Baltussen L, Amzulescu M, Bogaert J, Jassens S, Voigt J, Duchateau N, Giraldeau G, Gabrielli L, Penela D, Evertz R, Mont L, Brugada J, Berruezo A, Bijnens B, Sitges M, Yoshikawa H, Suzuki M, Hashimoto G, Kusunose Y, Otsuka T, Nakamura M, Sugi K, Ruiz Ortiz M, Mesa D, Romo E, Delgado M, Seoane T, Martin M, Carrasco F, Lopez Granados A, Arizon J, Suarez De Lezo J, Magalhaes A, Cortez-Dias N, Silva D, Menezes M, Saraiva M, Santos L, Costa A, Costa L, Nunes Diogo A, Fiuza M, Ren B, De Groot-De Laat L, Mcghie J, Vletter W, Geleijnse M, Toda H, Oe H, Osawa K, Miyoshi T, Ugawa S, Toh N, Nakamura K, Kohno K, Morita H, Ito H, El Ghannudi S, Germain P, Samet H, Jeung M, Roy C, Gangi A, Orii M, Hirata K, Yamano T, Tanimoto T, Ino Y, Yamaguchi T, Kubo T, Imanishi T, Akasaka T, Sunbul M, Kivrak T, Oguz M, Ozguven S, Gungor S, Dede F, Turoglu H, Yildizeli B, Mutlu B, Mihaila S, Muraru D, Piasentini E, Peluso D, Cucchini U, Casablanca S, Naso P, Iliceto S, Vinereanu D, Badano L, Rodriguez Munoz D, Moya Mur J, Becker Filho D, Gonzalez A, Casas Rojo E, Garcia Martin A, Recio Vazquez M, Rincon L, Fernandez Golfin C, Zamorano Gomez J, Ledakowicz-Polak A, Polak L, Zielinska M, Kamiyama T, Nakade T, Nakamura Y, Ando T, Kirimura M, Inoue Y, Sasaki O, Nishioka T, Farouk H, Sakr B, Elchilali K, Said K, Sorour K, Salah H, Mahmoud G, Casanova Rodriguez C, Cano Carrizal R, Iglesias Del Valle D, Martin Penato Molina A, Garcia Garcia A, Prieto Moriche E, Alvarez Rubio J, De Juan Bagua J, Tejero Romero C, Plaza Perez I, Korlou P, Stefanidis A, Mpikakis N, Ikonomidis I, Anastasiadis S, Komninos K, Nikoloudi P, Margos P, Pentzeridis P. Poster session Thursday 12 December - AM: 12/12/2013, 08:30-12:30 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nagai Y, Osawa K, Fukushima H, Tamura Y, Aoki K, Ohya K, Yasuda H, Hikiji H, Takahashi M, Seta Y, Seo S, Kurokawa M, Kato S, Honda H, Nakamura I, Maki K, Jimi E. p130Cas, Crk-associated substrate, plays important roles in osteoclastic bone resorption. J Bone Miner Res 2013; 28:2449-62. [PMID: 23526406 DOI: 10.1002/jbmr.1936] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 02/18/2013] [Accepted: 03/04/2013] [Indexed: 11/08/2022]
Abstract
p130Cas, Crk-associated substrate (Cas), is an adaptor/scaffold protein that plays a central role in actin cytoskeletal reorganization. We previously reported that p130Cas is not tyrosine-phosphorylated in osteoclasts derived from Src-deficient mice, which are congenitally osteopetrotic, suggesting that p130Cas serves as a downstream molecule of c-Src and is involved in osteoclastic bone resorption. However, the physiological role of p130Cas in osteoclasts has not yet been confirmed because the p130Cas-deficient mice displayed embryonic lethality. Osteoclast-specific p130Cas conditional knockout (p130Cas(ΔOCL-) ) mice exhibit a high bone mass phenotype caused by defect in multinucleation and cytoskeleton organization causing bone resorption deficiency. Bone marrow cells from p130Cas(ΔOCL-) mice were able to differentiate into osteoclasts and wild-type cells in vitro. However, osteoclasts from p130Cas(ΔOCL-) mice failed to form actin rings and resorb pits on dentine slices. Although the initial events of osteoclast attachment, such as β3-integrin or Src phosphorylation, were intact, the Rac1 activity that organizes the actin cytoskeleton was reduced, and its distribution was disrupted in p130Cas(ΔOCL-) osteoclasts. Dedicator of cytokinesis 5 (Dock5), a Rho family guanine nucleotide exchanger, failed to associate with Src or Pyk2 in osteoclasts in the absence of p130Cas. These results strongly indicate that p130Cas plays pivotal roles in osteoclastic bone resorption.
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Affiliation(s)
- Yoshie Nagai
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Fukuoka, Japan; Division of Developmental Stomatognathic Function Science, Department of Health Improvement, Kyushu Dental University, Fukuoka, Japan
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Osawa K, Nakagawa T, Sasaki H, Wakasaki H, Furuta H, Nishi M, Nanjo K, Akamizu T. A case of type 2 diabetes with abrupt-onset hypoglycemia due to anti-insulin antibody: Immunological change evaluated by Scatchard analysis during successful treatment by the exchange from human insulin to insulin analogue. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.429] [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: 11/30/2022]
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Osawa K, Miyoshi T, Koyama Y, Hashimoto K, Nagase S, Nakamura K, Kohno K, Morita H, Kusano K, Ito H. Usefulness of first-pass myocardial perfusion imaging at rest in combination with 64-row detector computed tomography angiography for assessing coronary artery disease. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Osawa K, Miyoshi T, Koyama T, Nagase S, Nakamura K, Kohno K, Morita H, Kusano K, Ito H. Differential impact of visceral abdominal adipose tissue on vulnerable plaque detected by coroanry multi-detector row CT in patients with or without diabetes. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.2769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sakamoto H, Toh N, Oe H, Osawa K, Miyoshi T, Nakamura K, Ito H. Epicardial fat rather than abdominal visceral fat is associated with left ventricular diastolic dysfunction in patients with preserved left ventricular ejection fraction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nakamura K, Miura D, Yunoki K, Koyama Y, Osawa K, Miyoshi T, Kohno K, Morita H, Ito H. Eicosapentaenoic acid prevents arterial calcification in klotho mutant mice, an animal model of typical aging. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Naito T, Miyoshi T, Osawa K, Toh N, Oe H, Nakamura K, Kohno K, Morita H, Kusano K, Ito H. Usefulness of epicardial adipose tissue by echocardiography as a predictor for plaque vulnerability determined by coronary CT angiography. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nakao K, Yasoda A, Osawa K, Fujii T, Kondo E, Koyama N, Kanamoto N, Miura M, Kuwahara K, Akiyama H, Bessho K, Nakao K. Impact of local CNP/GC-B system in growth plates on endochondral bone growth. BMC Pharmacol Toxicol 2013. [PMCID: PMC3765567 DOI: 10.1186/2050-6511-14-s1-p48] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Shigemura K, Tanaka K, Osawa K, Nakano Y, Arakawa S, Fujisawa M. P358 Clinical risk factors for shock by bacteremic UTI. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70599-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shigemura K, Osawa K, Tanaka K, Yoshida H, Shirakawa T, Fujisawa M, Arakawa S. P260 Candida urinary tract isolation and Candida species susceptibilities to anti-fungus medication in Kobe University Hospital. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70501-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nakamura H, Aoki K, Masuda W, Alles N, Nagano K, Fukushima H, Osawa K, Yasuda H, Nakamura I, Mikuni-Takagaki Y, Ohya K, Maki K, Jimi E. Disruption of NF-κB1 prevents bone loss caused by mechanical unloading. J Bone Miner Res 2013; 28:1457-67. [PMID: 23322687 DOI: 10.1002/jbmr.1866] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 11/28/2012] [Accepted: 12/18/2012] [Indexed: 02/03/2023]
Abstract
Mechanical unloading, such as in a microgravity environment in space or during bed rest (for patients who require prolonged bed rest), leads to a decrease in bone mass because of the suppression of bone formation and the stimulation of bone resorption. To address the challenges presented by a prolonged stay in space and the forthcoming era of a super-aged society, it will be important to prevent the bone loss caused by prolonged mechanical unloading. Nuclear factor κB (NF-κB) transcription factors are activated by mechanical loading and inflammatory cytokines. Our objective was to elucidate the role of NF-κB pathways in bone loss that are caused by mechanical unloading. Eight-week-old wild-type (WT) and NF-κB1-deficient mice were randomly assigned to a control or mechanically unloaded with tail suspension group. After 2 weeks, a radiographic analysis indicated a decrease in bone mass in the tibias and femurs of the unloaded WT mice but not in the NF-κB1-deficient mice. An NF-κB1 deficiency suppressed the unloading-induced reduction in bone formation by maintaining the proportion and/or potential of osteoprogenitors or immature osteoblasts, and by suppression of bone resorption through the inhibition of intracellular signaling through the receptor activator of NF-κB ligand (RANKL) in osteoclast precursors. Thus, NF-κB1 is involved in two aspects of rapid reduction in bone mass that are induced by disuse osteoporosis in space or bed rest.
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Affiliation(s)
- Hitomi Nakamura
- Division of Molecular Signaling and Biochemistry, Department of Health Improvement, Kyushu Dental University, Fukuoka, Japan
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Nagahara A, Mitani A, Fukuda M, Yamamoto H, Tahara K, Morita I, Ting CC, Watanabe T, Fujimura T, Osawa K, Sato S, Takahashi S, Iwamura Y, Kuroyanagi T, Kawashima Y, Noguchi T. Antimicrobial photodynamic therapy using a diode laser with a potential new photosensitizer, indocyanine green-loaded nanospheres, may be effective for the clearance of Porphyromonas gingivalis. J Periodontal Res 2013; 48:591-9. [PMID: 23317284 DOI: 10.1111/jre.12042] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Antimicrobial photodynamic therapy (aPDT) is a new treatment method for the removal of infectious pathogens using a photosensitizer and light of a specific wavelength, e.g., toluidine blue with a wavelength of about 600 nm. We explored a new photosensitizer and focused on indocyanine green (ICG), which has high absorption at a wavelength of 800-805 nm. We investigated the bactericidal effect of PDT on Porphyromonas gingivalis using a new photosensitizer, ICG-loaded nanospheres with an 805 nm wavelength low-level diode laser irradiation. METHODS We designed ICG-loaded nanospheres coated with chitosan (ICG-Nano/c) as a photosensitizer. A solution containing Porphyromonas gingivalis (10(8) CFU/mL) with or without ICG-Nano/c (or ICG) was prepared and irradiated with a diode laser or without laser irradiation as a negative control. The irradiation settings were 0.5 W with a duty ratio of 10%, for 3-100 ms in repeated pulse (RPT) or continuous wave mode. CFU were counted after 7 d of anaerobic culture. RESULTS We observed that ICG-Nano/c could adhere to the surface of P. gingivalis. When ICG-Nano/c was used for aPDT, irradiation with RPT 100 ms mode gave the lowest increase in temperature. Laser irradiation with ICG-Nano/c significantly reduced the number of P. gingivalis (i.e., approximately 2-log10 bacterial killing). The greatest bactericidal effect was found in the RPT 100 ms group. However, laser irradiation (RPT 100 ms) with ICG, as well as without photosensitizer, had no effect on the number of bacteria. CONCLUSIONS Within the limits of this study, ICG-Nano/c with low-level diode laser (0.5 W; 805 nm) irradiation showed an aPDT-like effect, which might be useful for a potential photodynamic periodontal therapy.
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Affiliation(s)
- A Nagahara
- Department of Periodontology, School of Dentistry, Aichi Gakuin University, Aichi, Japan
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Nakao K, Okubo Y, Yasoda A, Koyama N, Osawa K, Isobe Y, Kondo E, Fujii T, Miura M, Nakao K, Bessho K. The effects of C-type natriuretic peptide on craniofacial skeletogenesis. J Dent Res 2012; 92:58-64. [PMID: 23114031 DOI: 10.1177/0022034512466413] [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] [Indexed: 11/17/2022] Open
Abstract
C-type natriuretic peptide (CNP) is a potent stimulator of long bone and vertebral development via endochondral ossification. In the present study, we investigated the effects of CNP on craniofacial skeletogenesis, which consists of both endochondral and membranous ossification. Morphometric analyses of crania from CNP knockout and transgenic mice revealed that CNP stimulates longitudinal growth along the cranial length, but does not regulate cranial width. CNP markedly increased the length of spheno-occipital synchondrosis in fetal murine organ cultures, and the thickness of cultured murine chondrocytes from the spheno-occipital synchondrosis or nasal septum, resulting in the stimulation of longitudinal cranial growth. Mandibular growth includes endochondral and membranous ossification; although CNP stimulated endochondral bone growth of condylar cartilage in cultured fetal murine mandibles, differences in the lengths of the lower jaw between CNP knockout or transgenic mice and wild-type mice were smaller than those observed for the lengths of the upper jaw. These results indicate that CNP primarily stimulates endochondral ossification in the craniofacial region and is crucial for midfacial skeletogenesis.
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Affiliation(s)
- K Nakao
- Department of Oral and Maxillofacial Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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Furuta H, Osawa K, Shin M, Ishikawa A, Matsuo K, Khan M, Aoki K, Ohya K, Okamoto M, Tominaga K, Takahashi T, Nakanishi O, Jimi E. Selective inhibition of NF-κB suppresses bone invasion by oral squamous cell carcinoma in vivo. Int J Cancer 2012; 131:E625-35. [PMID: 22262470 DOI: 10.1002/ijc.27435] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Accepted: 12/29/2011] [Indexed: 12/25/2022]
Abstract
Nuclear factor-κB (NF-κB) is constitutively activated in many cancers, including oral squamous cell carcinoma (OSCC), and is involved in the invasive characteristics of OSCC, such as growth, antiapoptotic activity and protease production. However, the cellular mechanism underlying NF-κB's promotion of bone invasion by OSCC is unclear. Therefore, we investigated the role of NF-κB in bone invasion by OSCC in vivo. Immunohistochemical staining of OSCC invading bone in 10 patients indicated that the expression and nuclear translocation of p65, a main subunit of NF-κB, was increased in OSCC compared with normal squamous epithelial cells. An active form of p65 phosphorylated at serine 536 was present mainly in the nucleus in not only differentiated tumor cells but also tumor-associated stromal cells and bone-resorbing osteoclasts. We next injected mouse OSCC SCCVII cells into the masseter region of C(3) H/HeN mice. Mice were treated for 3 weeks with a selective NF-κB inhibitor, NBD peptide, which disrupts the association of NF-κB essential modulator (NEMO) with IκB kinases. NBD peptide treatment inhibited TNFα-induced and constitutive NF-κB activation in SCCVII cells in vitro and in vivo, respectively. Treatment with NBD peptide decreased zygoma and mandible destruction by SCCVII cells, reduced number of osteoclasts by inhibiting RANKL expression in osteoblastic cells and SCCVII cells, increased apoptosis and suppressed the proliferation of SCCVII cells. Taken together, our data clearly indicate that inhibition of NF-κB is useful for inhibiting bone invasion by OSCC.
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Affiliation(s)
- Hiroyuki Furuta
- Division of Molecular Signaling and Biochemistry, Department of Bioscience, Kyushu Dental College, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
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Seo Y, Fukushima H, Maruyama T, Kuroishi KN, Osawa K, Nagano K, Aoki K, Weih F, Doi T, Zhang M, Ohya K, Katagiri T, Hosokawa R, Jimi E. Accumulation of p100, a precursor of NF-κB2, enhances osteoblastic differentiation in vitro and bone formation in vivo in aly/aly mice. Mol Endocrinol 2012; 26:414-22. [PMID: 22282470 DOI: 10.1210/me.2011-1241] [Citation(s) in RCA: 20] [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: 01/21/2023] Open
Abstract
We previously reported that alymphoplasia (aly/aly) mice, which have a natural loss-of-function mutation in the Nik gene, which encodes a kinase essential for the processing of p100 to p52 in the alternative nuclear factor-κB (NF-κB) pathway, show mild osteopetrosis with an increase in several parameters of bone formation: bone formation rate, mineral apposition rate, and osteoblast number. We therefore investigated the molecular mechanisms triggered by the alternative NF-κB pathway in the regulation of osteoblast differentiation using primary osteoblasts (POB) prepared from aly/aly mice. Alkaline phosphatase (ALP) activity and mineralization induced by the presence of β-glycerophosphate and ascorbic acid were enhanced in POB from aly/aly compared with wild-type (WT) mice. Furthermore, osteoblastic differentiation induced by bone morphogenetic protein 2 (BMP2), as shown by ALP activity, mRNA expression of osteocalcin, Id1, Osterix and Runx2, and Sma- and Mad-related protein (Smad)1/5/8 phosphorylation, was also enhanced in POB from aly/aly mice. The ectopic bone formation in vivo that was induced by BMP2 was enhanced in aly/aly mice compared with controls. Transfection of a mutant form of p100, p100ΔGRR, which cannot be processed to p52, stimulated ALP activity and Smad phosphorylation. In contrast to p100ΔGRR, overexpression of p52 inhibited these events. Both BMP2-induced ALP activity and Smad phosphorylation were reduced in POB from p100-deficient mice, which carry a homozygous deletion of the COOH-terminal ankyrin repeats of p100 but still express functional p52 protein. p52 and p100ΔGRR interacted with a BMP receptor, ALK2, in overexpressed COS7 cells and changed the ALK2 protein levels in opposite directions: p52 reduced ALK2 and p100 increased it. Thus, the alternative the NF-κB pathway via the processing of p52 from p100 negatively regulates osteoblastic differentiation and bone formation by modifying BMP activity.
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Affiliation(s)
- Yoshinori Seo
- Division of Molecular Signaling and Biochemistry, Department of Bioscience, Kyushu Dental College, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, Fukuoka, Japan
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Koyama N, Okubo Y, Nakao K, Osawa K, Fujimura K, Bessho K. Pluripotency of mesenchymal cells derived from synovial fluid in patients with temporomandibular joint disorder. Life Sci 2011; 89:741-7. [PMID: 21958469 DOI: 10.1016/j.lfs.2011.09.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 08/05/2011] [Accepted: 08/27/2011] [Indexed: 01/31/2023]
Abstract
AIMS Mesenchymal stem cells are an interesting source of material for regenerative medicine. The present study aimed at characterizing the phenotype and differentiation potential of adherent synovial fluid-derived cells from temporomandibular joint (TMJ) disorder patients. MAIN METHODS Synovial fluid collection takes place during TMJ cavity irrigation arthrocentesis under local anesthesia. The synovial fluid-derived adherent cells were fibroblast-like and spindle-shaped. Ex vivo-expanded synovial fluid-derived cells were shown to express STRO-1 and CD146, previously found to be present in bone marrow mesenchymal stem cells. Further, they were identified as being capable of differentiating into a variety of cell types including osteoblasts, chondrocytes, adipocytes, and neurons. KEY FINDINGS The present study demonstrates that human pluripotent cells can be isolated from synovial fluid. These synovial fluid-derived cells cannot only be derived from a very accessible resource, but are also capable of providing sufficient cells for potential clinical applications. SIGNIFICANCE These cells may play a role in the regenerative response during arthritic diseases and are promising candidates for developing novel cell-based therapeutic approaches for postnatal skeletal tissue repair.
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Affiliation(s)
- Noriaki Koyama
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan.
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Koyama N, Okubo Y, Nakao K, Osawa K, Bessho K. Experimental study of osteoinduction using a new material as a carrier for bone morphogenetic protein-2. Br J Oral Maxillofac Surg 2011; 49:314-8. [DOI: 10.1016/j.bjoms.2010.05.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Accepted: 05/14/2010] [Indexed: 10/19/2022]
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Osawa K, Okubo Y, Nakao K, Koyama N, Bessho K. Osteoinduction by repeat plasmid injection of human bone morphogenetic protein-2. J Gene Med 2011; 12:937-44. [PMID: 21069645 DOI: 10.1002/jgm.1515] [Citation(s) in RCA: 15] [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: 11/06/2022] Open
Abstract
BACKGROUND Bone morphogenetic protein-2 (BMP-2) is an osteoinductive protein and is considered useful for the treatment of skeletal disorders. Previous studies using BMP-2 in clinical applications have encountered difficulties, including the lack of an efficient, safe, inexpensive and simple delivery system. The gene transfer approach is a promising option for utilizing BMP-2. Although viral vector-mediated gene transfer is efficient, safety concerns prevent its clinical application for common diseases. On the other hand, plasmid-based gene transfer is a safe method and can be harnessed for practical applications. METHODS A plasmid encoding human BMP-2 (pCAGGS-BMP-2) was used and injected repeatedly (one to eight times) into the skeletal muscle of mice at a divided dose. We compared the capability of osteoinduction in the skeletal muscle of mice after gene transfer by repeat injection. BMP-2 production was assessed via immunohistochemistry, and osteoinduction was evaluated using radiography, histology and biochemical assays. RESULTS The BMP-2 gene was transferred into the skeletal muscle of mice by repeat injection using pCAGGS-BMP-2. Mature bone was frequently observed in mice injected repeatedly with pCAGGS-BMP-2 at a divided dose. This confirms that, if the total dose is fixed, repeat injection with pCAGGS-BMP-2 at a divided dose causes osteoinduction more frequently in the skeletal muscle of mice. CONCLUSIONS These results suggest the possibility of the effective clinical use of human BMP-2 gene therapy by direct DNA injection, and facilitate the clinical application of BMP-2 gene therapy.
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Affiliation(s)
- Kenji Osawa
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto, Japan.
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Miyamoto I, Togo Y, Osawa K, Yasuda S. Surgical management of chondroblastoma involving the temporal bone and mandible: Case report. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.ajoms.2010.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Tanaka M, Toe M, Nagata H, Ojima M, Kuboniwa M, Shimizu K, Osawa K, Shizukuishi S. Effect of Eucalyptus-Extract Chewing Gum on Oral Malodor: A Double-Masked, Randomized Trial. J Periodontol 2010; 81:1564-71. [DOI: 10.1902/jop.2010.100249] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Osawa K, Hamamoto T, Fujisawa T, Terazima M, Sato H, Kimura Y. Raman Spectroscopic Study on the Solvation of p-Aminobenzonitrile in Supercritical Water and Methanol. J Phys Chem A 2009; 113:3143-54. [DOI: 10.1021/jp8111606] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- K. Osawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - T. Hamamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - T. Fujisawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - M. Terazima
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - H Sato
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Y. Kimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan, Department of Chemistry, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan, and Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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Nagata H, Inagaki Y, Tanaka M, Ojima M, Kataoka K, Kuboniwa M, Nishida N, Shimizu K, Osawa K, Shizukuishi S. Effect of eucalyptus extract chewing gum on periodontal health: a double-masked, randomized trial. J Periodontol 2008; 79:1378-85. [PMID: 18672986 DOI: 10.1902/jop.2008.070622] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Studies in vitro showed that eucalyptus extracts possess antibacterial activity against cariogenic and periodontopathic bacteria; however, the clinical effects with respect to periodontal health in humans remain unproven. The objective of this study was to evaluate the effect of chewing gum containing eucalyptus extract on periodontal health in a double-masked, randomized, controlled trial. METHODS Healthy humans with gingivitis but not deep periodontal pockets were randomly assigned to the following groups: high-concentration group (n=32): use of 0.6% eucalyptus extract chewing gum for 12 weeks (90 mg/day); low-concentration group (n=32): use of 0.4% eucalyptus extract chewing gum for 12 weeks (60 mg/day); and placebo group (n=33): use of chewing gum without eucalyptus extract for 12 weeks. Plaque accumulation (PLA), gingival index (GI), bleeding on probing (BOP), periodontal probing depth (PD), and clinical attachment level (CAL) were measured at weeks 0, 4, 8, 12, and 14. Significance was analyzed with repeated-measures two-way analysis of variance followed by the Games-Howell pairwise comparison test. RESULTS The interaction between the effects of eucalyptus extract chewing gum and the intake period was statistically significant for PLA, GI, BOP, and PD but not for CAL. The low- and high-concentration groups exhibited statistically significant (P <0.05) improvements compared to the placebo group for PLA, GI, BOP, and PD. CONCLUSIONS Eucalyptus extract chewing gum had a significant effect on PLA, GI, BOP, and PD. The use of eucalyptus extract chewing gum may promote periodontal health.
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Affiliation(s)
- Hideki Nagata
- Department of Preventive Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
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Sawai R, Kuroda K, Shibata T, Gomyou R, Osawa K, Shimizu K. Anti-influenza virus activity of Chaenomeles sinensis. J Ethnopharmacol 2008; 118:108-112. [PMID: 18456441 DOI: 10.1016/j.jep.2008.03.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2007] [Revised: 03/01/2008] [Accepted: 03/17/2008] [Indexed: 05/26/2023]
Abstract
AIM OF THE STUDY This investigation evaluated anti-influenza virus activity of 50% ethanol extract of the fruit of Chaenomeles sinensis K(OEHNE), which is widely used as a traditional Chinese medicine to treat throat diseases. MATERIAL AND METHODS Type A and B influenza viruses were treated with the extract at various concentrations for 1h at room temperature; then the plaque titers of the treated viruses were determined. The neutralizing component in the extract was partially purified using HP20 column chromatography. RESULTS Treatment with the extract at concentrations greater than 5mg/ml reduced the plaque titers of the both viruses to less than 10% of those of untreated viruses. The treatment inhibited viral hemagglutination activity, too. When the 50mg/ml extract was added to the culture medium after inoculation of the virus, viral NS2 protein synthesis was selectively inhibited and progeny virus was not detected in the infected cell medium. Partial purification showed that the neutralizing component consisted of high molecular weight polyphenols. CONCLUSION High molecular weight polyphenols in the fruits of C. sinensis neutralizes influenza virus by inhibiting hemagglutination activity and by suppressing NS2 protein synthesis.
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Affiliation(s)
- Reiko Sawai
- Lotte Co Ltd, Central Laboratory, Saitama, Japan
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