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Miyashita-Kobayashi A, Haruyama A, Nakamura K, Wu CY, Kuroiwa A, Yoshinari N, Kameyama A. Changes in Gloss Alteration, Surface Roughness, and Color of Direct Dental Restorative Materials after Professional Dental Prophylaxis. J Funct Biomater 2023; 15:8. [PMID: 38248675 PMCID: PMC10816376 DOI: 10.3390/jfb15010008] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/23/2024] Open
Abstract
In the context of optimizing dental care for patients who are elderly, the purpose of this in vitro study was to evaluate the surface gloss (with a micro-area gloss meter) of, surface roughness (with a compact surface roughness measuring instrument) of, and color change (with a dental colorimeter) in two commercially available injectable resin-based composites (Estelite Universal Flow (EUF) and Beautifil Flow Plus F00 (BFP)) as well as two glass-ionomer cements (GC Fuji II LC CAPSULE (FLC) and GC Fuji IX GP EXTRA CAPSULE (FGP)), before and after dental prophylaxis. After 24 h, the surfaces of each specimen were polished at 2500 rpm with a prophy brush (Mersage Brush, Shofu) and one-step prophylaxis paste (Prophy Paste Pro, Directa): under 100 or 300 gf load, and for 10 or 30 s, 4× cycles of cleaning. After mechanical cleaning, conditions were found for a significant reduction in the gloss level (EUF, BFP, or FLC; p < 0.05) and a significant increase in surface roughness (BFP; 300 gf load, 10 s × four cycles of cleaning). Overall, the longer time or higher prophylaxis load tended to decrease the surface gloss. However, the observed change in surface roughness varied between the restorative materials. There was no color change post-prophylaxis.
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Affiliation(s)
- Aya Miyashita-Kobayashi
- Department of Oral Health Promotion, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan; (A.M.-K.); (C.-Y.W.); (N.Y.)
- Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan;
| | - Akiko Haruyama
- Department of Operative Dentistry, Cariology, and Pulp Biology, Tokyo Dental College, Chiyoda-ku, Tokyo 101-0061, Japan;
| | - Keigo Nakamura
- Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan;
| | - Chia-Ying Wu
- Department of Oral Health Promotion, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan; (A.M.-K.); (C.-Y.W.); (N.Y.)
- Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan;
| | - Akihiro Kuroiwa
- Department of Dental Materials Science, School of Dentistry, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan;
| | - Nobuo Yoshinari
- Department of Oral Health Promotion, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan; (A.M.-K.); (C.-Y.W.); (N.Y.)
- Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan;
| | - Atsushi Kameyama
- Department of Oral Health Promotion, Graduate School of Oral Medicine, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan; (A.M.-K.); (C.-Y.W.); (N.Y.)
- Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan;
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Nishikawa R, Fukuda T, Haruyama A, Shibasaki I, Yamaguchi S, Arikawa T, Obi S, Amano H, Yagi H, Sakuma M, Abe S, Fukuda H, Toyoda S, Nakajima T. Association between serum GDF-15, myostatin, and sarcopenia in cardiovascular surgery patients. IJC Heart & Vasculature 2022; 42:101114. [PMID: 36071948 PMCID: PMC9442355 DOI: 10.1016/j.ijcha.2022.101114] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/11/2022] [Accepted: 08/24/2022] [Indexed: 11/26/2022]
Abstract
Background Myostatin is a negative regulator of skeletal muscle mass. On the other hand, growth differentiation factor (GDF)-15 is associated with lower muscle strength and muscle mass. We investigated the relationship between serum GDF-15, myostatin, and sarcopenia in patients receiving cardiovascular surgery through a ROC curve and a multivariate regression analysis. Methods Skeletal muscle mass index (SMI) by bioelectrical impedance analysis, hand-grip strength, knee extension strength, and walking speed were measured. Preoperative serum GDF-15 and myostatin levels were determined by ELISA. The sarcopenia index could be expressed as: −0.0042 × [myostatin] + 0.0007 × [GDF-15] + 0.0890 × age + 1.4030 × sex − 0.2679 × body mass index (BMI) − 2.1186. A ROC curve was plotted to identify the optimal cutoff level of the sarcopenia index to detect sarcopenia. Results 120 patients receiving cardiovascular surgery were included in the study. SMI, hand-grip strength, knee extension strength, and walking speed inversely correlated with GDF-15, but positively correlated with myostatin. In the multivariate stepwise regression analysis, SMI was a determinant of myostatin, and both GDF-15 and myostatin were determinants of SMI and muscle thickness, even after adjustment for age, sex, and BMI. A ROC curve showed that the sarcopenia index was a determinant of sarcopenia (cutoff value −1.0634, area under the curve 0.901, sensitivity 96.9%, specificity 70.9%). Conclusion GDF-15 and myostatin are associated with skeletal muscle volume in patients receiving cardiovascular surgery, but these associations are different. The sarcopenia index calculated from GDF-15 and myostatin levels may be a biomarker of sarcopenia.
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Haruyama A, Kojima M, Kameyama A, Muramatsu T. Combined use of baking soda and electric toothbrushing for removal of artificial extrinsic stain on enamel surface: An in vitro study. J Clin Exp Dent 2022; 14:e9-e15. [PMID: 35070119 PMCID: PMC8760959 DOI: 10.4317/jced.58708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 08/24/2021] [Indexed: 11/08/2022] Open
Abstract
Background This study aimed to investigate the combined effect of baking soda and electric toothbrushing on the removal of artificial extrinsic stain in vitro.
Material and Methods Flat enamel surfaces of 15 bovine incisors were artificially stained with 10% citric acid / 3% ferric chloride solution followed by 1% tannic acid solution. These specimens were randomly divided into three groups (n = 5) – Group S+B: brushing with an electric toothbrush and baking soda, Group S+C: brushing with an electric toothbrush and fluoride dentifrice, Group S: brushing only with an electric toothbrush. Color values (L*, a*, and b*) and surface roughness were measured before and after brushing (after 1, 2, 3, and 5 min). The data were statistically analyzed using two-way analysis of variance and Tukey’s honest significant difference test as a post hoc test (p< 0.05).
Results The L* value of Group S+B increased over time, and was significantly different between before brushing and at 5 min (p< 0.05). A significant difference in the ΔE* value of Group S+B was found at 5 min (p< 0.05). However, no significant difference was found in the ΔE* values of Group S+C and Group S. No significant differences in Ra were found in any of the groups.
Conclusions The results of this study suggest that the combined use of baking soda and electric toothbrushing has an excellent stain-removing effect compared with electric toothbrushing with a fluoride dentifrice. Additionally, the changes in surface roughness were similar to the changes caused by the use of general dentifrices. Key words:Baking soda, dentifrice, extrinsic stain removal, color change, surface roughness.
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Arikawa T, Nakajima T, Yazawa H, Kaneda H, Haruyama A, Obi S, Amano H, Sakuma M, Toyoda S, Abe S, Tsutsumi T, Matsui T, Nakata A, Shinozaki R, Miyamoto M, Inoue T. Clinical Usefulness of New R-R Interval Analysis Using the Wearable Heart Rate Sensor WHS-1 to Identify Obstructive Sleep Apnea: OSA and RRI Analysis Using a Wearable Heartbeat Sensor. J Clin Med 2020; 9:jcm9103359. [PMID: 33092145 PMCID: PMC7589311 DOI: 10.3390/jcm9103359] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 09/14/2020] [Revised: 10/11/2020] [Accepted: 10/16/2020] [Indexed: 01/20/2023] Open
Abstract
Obstructive sleep apnea (OSA) is highly associated with cardiovascular diseases, but most patients remain undiagnosed. Cyclic variation of heart rate (CVHR) occurs during the night, and R-R interval (RRI) analysis using a Holter electrocardiogram has been reported to be useful in screening for OSA. We investigated the usefulness of RRI analysis to identify OSA using the wearable heart rate sensor WHS-1 and newly developed algorithm. WHS-1 and polysomnography simultaneously applied to 30 cases of OSA. By using the RRI averages calculated for each time series, tachycardia with CVHR was identified. The ratio of integrated RRIs determined by integrated RRIs during CVHR and over all sleep time were calculated by our newly developed method. The patient was diagnosed as OSA according to the predetermined criteria. It correlated with the apnea hypopnea index and 3% oxygen desaturation index. In the multivariate analysis, it was extracted as a factor defining the apnea hypopnea index (r = 0.663, p = 0.003) and 3% oxygen saturation index (r = 0.637, p = 0.008). Twenty-five patients could be identified as OSA. We developed the RRI analysis using the wearable heart rate sensor WHS-1 and a new algorithm, which may become an expeditious and cost-effective screening tool for identifying OSA.
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Affiliation(s)
- Takuo Arikawa
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Toshiaki Nakajima
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
- Correspondence: ; Tel.: +81-282-86-1111; Fax: +81-282-86-5633
| | - Hiroko Yazawa
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Hiroyuki Kaneda
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Syotaro Obi
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Hirohisa Amano
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Shichiro Abe
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
| | - Takeshi Tsutsumi
- Division of Cardiology, Eda Memorial Hospital, Kanagawa 225-0012, Japan;
| | - Taishi Matsui
- Union Tool Co. Ltd., Tokyo 140-0013, Japan; (T.M.); (A.N.); (R.S.)
| | - Akio Nakata
- Union Tool Co. Ltd., Tokyo 140-0013, Japan; (T.M.); (A.N.); (R.S.)
| | - Ryo Shinozaki
- Union Tool Co. Ltd., Tokyo 140-0013, Japan; (T.M.); (A.N.); (R.S.)
| | - Masayuki Miyamoto
- Center of Sleep Medicine, Dokkyo Medical University Hospital, Tochigi 321-0293, Japan;
| | - Teruo Inoue
- Department of Cardiovascular Medicine, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan; (T.A.); (H.Y.); (H.K.); (A.H.); (S.O.); (H.A.); (M.S.); (S.T.); (S.A.); (T.I.)
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Hirose S, Nakajima T, Nozawa N, Katayanagi S, Ishizaka H, Mizushima Y, Matsumoto K, Nishikawa K, Toyama Y, Takahashi R, Arakawa T, Yasuda T, Haruyama A, Yazawa H, Yamaguchi S, Toyoda S, Shibasaki I, Mizushima T, Fukuda H, Inoue T. Phase Angle as an Indicator of Sarcopenia, Malnutrition, and Cachexia in Inpatients with Cardiovascular Diseases. J Clin Med 2020; 9:jcm9082554. [PMID: 32781732 PMCID: PMC7463846 DOI: 10.3390/jcm9082554] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 06/25/2020] [Revised: 07/25/2020] [Accepted: 08/04/2020] [Indexed: 12/13/2022] Open
Abstract
Malnutrition is associated with sarcopenia, cachexia, and prognosis. We investigated the usefulness of phase angle (PhA) as a marker of sarcopenia, cachexia, and malnutrition in 412 hospitalized patients with cardiovascular disease. We analyzed body composition with bioelectrical impedance analysis, and nutritional status such as controlling nutritional status (CONUT) score. Both skeletal muscle mass index (SMI) and PhA correlated with age, grip strength and knee extension strength (p < 0.0001) in both sexes. The SMI value correlated with CONUT score, Hb, and Alb in males. Phase angle also correlated with CONUT score, Hb, and Alb in males, and more strongly associated with these nutritional aspects. In females, PhA was correlated with Hb and Alb (p < 0.001). In both sexes, sarcopenia incidence was 31.6% and 32.4%; PhA cut-off in patients with sarcopenia was 4.55° and 4.25°; and cachexia incidence was 11.5% and 14.1%, respectively. The PhA cut-off in males with cachexia was 4.15°. Multivariate regression analysis showed that grip strength and brain natriuretic peptide (BNP) were independent determinants of SMI, whereas grip strength, BNP, and Hb were independent determinants of PhA. Thus, PhA appears to be a useful marker for sarcopenia, malnutrition, and cachexia in hospitalized patients with cardiovascular disease.
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Affiliation(s)
- Suguru Hirose
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (S.H.); (A.H.); (H.Y.); (S.Y.); (S.T.); (T.I.)
| | - Toshiaki Nakajima
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (S.H.); (A.H.); (H.Y.); (S.Y.); (S.T.); (T.I.)
- Correspondence:
| | - Naohiro Nozawa
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Satoshi Katayanagi
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Hayato Ishizaka
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Yuta Mizushima
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Kazuhisa Matsumoto
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Kaori Nishikawa
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Yohei Toyama
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Reiko Takahashi
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Tomoe Arakawa
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Tomohiro Yasuda
- School of Nursing, Seirei Christopher University, Hamamatsu, Shizuoka 433-8558, Japan;
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (S.H.); (A.H.); (H.Y.); (S.Y.); (S.T.); (T.I.)
| | - Hiroko Yazawa
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (S.H.); (A.H.); (H.Y.); (S.Y.); (S.T.); (T.I.)
| | - Suomi Yamaguchi
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (S.H.); (A.H.); (H.Y.); (S.Y.); (S.T.); (T.I.)
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (S.H.); (A.H.); (H.Y.); (S.Y.); (S.T.); (T.I.)
| | - Ikuko Shibasaki
- Department of Cardiovascular Surgery, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (I.S.); (H.F.)
| | - Takashi Mizushima
- Department of Rehabilitation, Dokkyo Medical University Hospital, Shimotsuga-gun, Tochigi 321-0293, Japan; (N.N.); (S.K.); (H.I.); (Y.M.); (K.M.); (K.N.); (Y.T.); (R.T.); (T.A.); (T.M.)
| | - Hirotsugu Fukuda
- Department of Cardiovascular Surgery, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (I.S.); (H.F.)
| | - Teruo Inoue
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan; (S.H.); (A.H.); (H.Y.); (S.Y.); (S.T.); (T.I.)
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Kameyama A, Saito A, Haruyama A, Komada T, Sugiyama S, Takahashi T, Muramatsu T. Marginal Leakage of Endodontic Temporary Restorative Materials around Access Cavities Prepared with Pre-Endodontic Composite Build-Up: An In Vitro Study. Materials (Basel) 2020; 13:E1700. [PMID: 32260501 PMCID: PMC7178652 DOI: 10.3390/ma13071700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 11/28/2022]
Abstract
This study aimed to examine the marginal seal between various commercial temporary restorative materials and exposed dentin/built-up composite. Sixty bovine incisors were cut above the cemento-enamel junction, and half of the dentin was removed to form a step, which was built up using flowable resin composite. The root canals were irrigated, filled with calcium hydroxide, and sealed using one of six temporary sealing materials (hydraulic temporary restorative material, temporary stopping material, zinc oxide eugenol cement, glass-ionomer cement, auto-cured resin-based temporary restorative material, and light-cured resin-based temporary restorative material) (n = 10 for each material). The samples were thermocycled 500 times and immersed in an aqueous solution of methylene blue. After 2 days, they were cut along the long axis of the tooth and the depth of dye penetration was measured at the dentin side and the built-up composite side. For the margins of the pre-endodontic resin composite build-up, the two resin-based temporary restorative materials showed excellent sealing. Hydraulic temporary restorative material had a moderate sealing effect, but the sealing effect of both zinc oxide eugenol cement and glass-ionomer cement was poorer.
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Affiliation(s)
- Atsushi Kameyama
- Department of Operative Dentistry, Endodontology and Periodontology, School of Dentistry, Matsumoto Dental University, Shiojiri 399-0781, Japan
| | - Aoi Saito
- Section of Dental Hygiene, Tokyo Dental College Suidobashi Hospital, Tokyo 100-0061, Japan;
| | - Akiko Haruyama
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, Tokyo 101-0061, Japan; (A.H.); (T.K.); (T.M.)
| | - Tomoaki Komada
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, Tokyo 101-0061, Japan; (A.H.); (T.K.); (T.M.)
| | - Setsuko Sugiyama
- Division of General Dentistry, Tokyo Dental College Chiba Dental Center, Chiba 261-8502, Japan; (S.S.); (T.T.)
| | - Toshiyuki Takahashi
- Division of General Dentistry, Tokyo Dental College Chiba Dental Center, Chiba 261-8502, Japan; (S.S.); (T.T.)
| | - Takashi Muramatsu
- Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, Tokyo 101-0061, Japan; (A.H.); (T.K.); (T.M.)
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Sawaguchi T, Nakajima T, Haruyama A, Hasegawa T, Shibasaki I, Nakajima T, Kaneda H, Arikawa T, Obi S, Sakuma M, Ogawa H, Takei Y, Toyoda S, Nakamura F, Abe S, Fukuda H, Inoue T. Association of serum leptin and adiponectin concentrations with echocardiographic parameters and pathophysiological states in patients with cardiovascular disease receiving cardiovascular surgery. PLoS One 2019; 14:e0225008. [PMID: 31703113 PMCID: PMC6839852 DOI: 10.1371/journal.pone.0225008] [Citation(s) in RCA: 10] [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: 07/25/2019] [Accepted: 10/25/2019] [Indexed: 11/18/2022] Open
Abstract
Leptin and adiponectin are important regulators of energy metabolism and body composition. Leptin exerts cardiodepressive effects, whereas adiponectin has cardioprotective effects, but several conflicting findings have been reported. The aim of the present study was to assess the relationship between serum leptin and adiponectin levels and echocardiographic parameters and pathophysiological states in patients with cardiovascular disease (CVD) receiving cardiovascular surgery. A total of 128 patients (79 males, average age 69.6 years) that had surgery for CVD including coronary artery bypass graft (CABG) and valve replacement were recruited in this study. Preoperative serum adiponectin and leptin concentrations were measured by enzyme-linked immunosorbent assay and compared with preoperative echocardiographic findings. Body fat volume and skeletal muscle volume index (SMI) were estimated using bioelectrical impedance analysis. We also measured grip strength and gait speed. Sarcopenia was diagnosed based on the recommendations of the Asian Working Group on Sarcopenia. Positive correlations were found between adiponectin and brain natriuretic peptide (BNP), age, left atrial diameter (LAD), E/e’ (early-diastolic left ventricular inflow velocity / early-diastolic mitral annular velocity), and left atrial volume index (LAVI). Negative correlations were observed between adiponectin and body mass index (BMI), estimated glomerular filtration rate (eGFR), triglyceride, hemoglobin, and albumin. Serum leptin was positively correlated with BMI, total cholesterol, triglyceride, albumin, body fat volume, and LV ejection fraction (LVEF), whereas it was negatively correlated with BNP and echocardiographic parameters (LAD, LV mass index (LVMI), and LAVI). Multiple regression analysis showed associations between log (leptin) and log (adiponectin) and echocardiographic parameters after adjusting for age, sex, and BMI. Serum adiponectin was negatively correlated with leptin, but positively correlated with tumor necrosis factor α (TNFα), an inflammatory cytokine. In males, serum leptin level had a positive correlation with skeletal muscle volume and SMI. However, adiponectin had a negative correlation with anterior mid-thigh muscle thickness, skeletal muscle volume and SMI. And, it was an independent predictive factor in males for sarcopenia even after adjusted by age. These results suggest that leptin and adiponectin may play a role in cardiac remodeling in CVD patients receiving cardiovascular surgery. And, adiponectin appears to be a marker of impaired metabolic signaling that is linked to heart failure progression including inflammation, poor nutrition, and muscle wasting in CVD patients receiving cardiovascular surgery.
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Affiliation(s)
- Tatsuya Sawaguchi
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Toshiaki Nakajima
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
- * E-mail:
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Takaaki Hasegawa
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Ikuko Shibasaki
- Department of Cardiovascular Surgery, Dokkyo Medical University, Tochigi, Japan
| | - Takafumi Nakajima
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Hiroyuki Kaneda
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Takuo Arikawa
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Syotaro Obi
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Hironaga Ogawa
- Department of Cardiovascular Surgery, Dokkyo Medical University, Tochigi, Japan
| | - Yuusuke Takei
- Department of Cardiovascular Surgery, Dokkyo Medical University, Tochigi, Japan
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Fumitaka Nakamura
- Third Department of Internal Medicine, Teikyo University, Chiba Medical Center, Japan
| | - Shichiro Abe
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Hirotsugu Fukuda
- Department of Cardiovascular Surgery, Dokkyo Medical University, Tochigi, Japan
| | - Teruo Inoue
- Department of Cardiovascular Medicine, Dokkyo Medical University, Tochigi, Japan
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8
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Nakajima T, Shibasaki I, Sawaguchi T, Haruyama A, Kaneda H, Nakajima T, Hasegawa T, Arikawa T, Obi S, Sakuma M, Ogawa H, Toyoda S, Nakamura F, Abe S, Fukuda H, Inoue T. Growth Differentiation Factor-15 (GDF-15) is a Biomarker of Muscle Wasting and Renal Dysfunction in Preoperative Cardiovascular Surgery Patients. J Clin Med 2019; 8:jcm8101576. [PMID: 31581569 PMCID: PMC6832285 DOI: 10.3390/jcm8101576] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 08/24/2019] [Revised: 09/22/2019] [Accepted: 09/25/2019] [Indexed: 12/12/2022] Open
Abstract
Frailty and sarcopenia increase the risk of complications and mortality when invasive treatment such as cardiac surgery is performed. Growth differentiation factor-15 (GDF-15) involves various pathophysiological conditions including renal dysfunction, heart failure and cachexia. We investigated the pathophysiological roles of preoperative GDF-15 levels in cardiovascular surgery patients. Preoperative skeletal muscle index (SMI) determined by bioelectrical impedance analysis, hand-grip strength, 4 m gait speed, and anterior thigh muscle thickness (TMth) measured by echocardiography were assessed in 72 patients (average age 69.9 years) who underwent cardiovascular surgery. The preoperative serum GDF-15 concentration was determined by enzyme-linked immunosorbent assay. Circulating GDF-15 level was correlated with age, brain natriuretic peptide, and estimated glomerular filtration rate (eGFR). It was also negatively correlated with SMI, hand-grip strength, and anterior TMth. In multivariate analysis, eGFR and anterior TMth were the independent determinants of GDF-15 concentration even after adjusting for age, sex, and body mass index. Alternatively, the GDF-15 level was an independent determinant of eGFR and anterior TMth. We concluded that preoperative GDF-15 levels reflect muscle wasting as well as renal dysfunction in preoperative cardiovascular surgery patients. GDF-15 may be a novel biomarker for identify high-risk patients with muscle wasting and renal dysfunction before cardiovascular surgery.
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Affiliation(s)
- Toshiaki Nakajima
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Ikuko Shibasaki
- Department of Cardiovascular Surgery, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Tatsuya Sawaguchi
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Hiroyuki Kaneda
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Takafumi Nakajima
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Takaaki Hasegawa
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Takuo Arikawa
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Syotaro Obi
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Hironaga Ogawa
- Department of Cardiovascular Surgery, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Fumitaka Nakamura
- Third Department of Internal Medicine, Teikyo University, Chiba Medical Center, Ichihara, Chiba 299-0111, Japan.
| | - Shichiro Abe
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Hirotsugu Fukuda
- Department of Cardiovascular Surgery, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
| | - Teruo Inoue
- Department of Cardiovascular Medicine, School of Medicine, Dokkyo Medical University, Shimotsuga-gun, Tochigi 321-0293, Japan.
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Toyoda S, Haruyama A, Inami S, Arikawa T, Saito F, Watanabe R, Sakuma M, Abe S, Nakajima T, Tanaka A, Node K, Inoue T. Effects of carvedilol vs bisoprolol on inflammation and oxidative stress in patients with chronic heart failure. J Cardiol 2019; 75:140-147. [PMID: 31444140 DOI: 10.1016/j.jjcc.2019.07.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 06/10/2019] [Accepted: 07/01/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Inflammation and oxidative stress play a role in the pathophysiology of chronic heart failure (CHF). Our previous clinical trial, the Bisoprolol Improvement Group for Chronic Heart Failure Treatment Study in Dokkyo Medical University (BRIGHT-D), reported that bisoprolol is superior to carvedilol for myocardial protection in patients with CHF, as demonstrated by high-sensitivity cardiac troponin T (hsTnT) reduction. The present study was a subanalysis of the BRIGHT-D study that focused on the effects of bisoprolol vs carvedilol on inflammation and oxidative stress in CHF patients. METHODS Of the 87 patients enrolled in the BRIGHT-D trial, the present study included 48 patients (26 in the bisoprolol group and 22 in the carvedilol group) who had baseline and follow-up measurements of derivatives of reactive oxygen metabolites (d-ROMs) as an index of oxidative stress. RESULTS High-sensitivity C-reactive protein (hsCRP), an inflammatory marker, decreased in both groups; however, the decrease in the bisoprolol group [3.35 ± 0.78 to 2.69 ± 0.44 log (ng/ml), p = 0.001] was more significant than that in the carvedilol group [3.38 ± 0.59 to 2.85 ± 0.76 log (ng/ml), p = 0.047]. The d-ROMs also decreased in both groups; however, the decrease in the bisoprolol group (401 ± 106 to 344 ± 82 U.CARR, p = 0.015) was less significant than that in the carvedilol group (382 ± 84 to 312 ± 76 U.CARR, p = 0.006]. In all 48 patients, the change in hsTnT was correlated with that in hsCRP (R = 0.467, p = 0.003). CONCLUSIONS Bisoprolol may be better than carvedilol for reducing inflammation, but carvedilol may be better than bisoprolol for reducing oxidative stress. Proper use of bisoprolol or carvedilol based on individual pathophysiology could be promising in patients with CHF.
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Affiliation(s)
- Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan.
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Shu Inami
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Takuo Arikawa
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Fumiya Saito
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Ryo Watanabe
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Shichiro Abe
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Toshiaki Nakajima
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
| | - Atsushi Tanaka
- Department of Cardiovascular Medicine, Saga University, Saga, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, Saga, Japan
| | - Teruo Inoue
- Department of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Japan
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10
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Kageyama M, Toyoda S, Sakuma M, Inami S, Nasuno T, Haruyama A, Kikuchi M, Abe S, Inoue T. Theophylline-Induced Left Ventricular Relaxation Disturbance in Magnesium-Deficient Rats: Improvement by K201, a Novel 1,4-Benzothiazepine Derivative. Acta Cardiol Sin 2018; 34:432-439. [PMID: 30271094 PMCID: PMC6160519 DOI: 10.6515/acs.201809_34(5).20180513a] [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] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND Although magnesium deficiency induces left ventricular dysfunction, it is not known whether both systolic and diastolic functions are altered to the same extent. In this study, we investigated the effects of theophylline on left ventricular function in rats fed a normal diet or a magnesium-deficient diet for 1 month, and determined whether K201, a multi-channel blocker, modulated the effects of theophylline. METHODS Theophylline was infused at 5 mg/kg/min for 15 min in 6 control rats and 6 magnesium-deficient rats, and hemodynamic measurements were performed. In another 6 magnesium-deficient rats, K201 was infused at 0.1 mg/kg/min for 15 min simultaneously with theophylline. RESULTS Theophylline induced persistent increases in heart rate, peak positive first derivative of left ventricular pressure (+dP/dt), and a transient increase in left ventricular end-diastolic pressure (LVEDP), but did not affect left ventricular systolic pressure (LVSP) and peak negative first derivative of left ventricular pressure (-dP/dt) in the control rats. In contrast, in the magnesium-deficient rats, there was a persistent decrease in LVSP and a persistent increase in -dP/dt after theophylline infusion, although increases in heart rate, +dP/dt and LVEDP were similar to those in the control rats. When K201 was infused along with theophylline in the magnesium-deficient rats, both the decrease in LVSP and increase in -dP/dt were suppressed. CONCLUSIONS Theophylline impaired left ventricular function in the magnesium-deficient rats, and this was improved by K201. K201 may provide new insights regarding future strategies for heart failure treatment.
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Affiliation(s)
- Michiya Kageyama
- Department of Cardiovascular Medicine, Nasu Red Cross Hospital, Otawara;
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Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Shu Inami
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Takahisa Nasuno
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Migaku Kikuchi
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Shichiro Abe
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
| | - Teruo Inoue
- Department of Cardiovascular Medicine, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan
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11
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Kaneda H, Nakajima T, Haruyama A, Shibasaki I, Hasegawa T, Sawaguchi T, Kuwata T, Obi S, Arikawa T, Sakuma M, Amano H, Toyoda S, Fukuda H, Inoue T. Association of serum concentrations of irisin and the adipokines adiponectin and leptin with epicardial fat in cardiovascular surgery patients. PLoS One 2018; 13:e0201499. [PMID: 30071056 PMCID: PMC6072062 DOI: 10.1371/journal.pone.0201499] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/16/2018] [Indexed: 12/21/2022] Open
Abstract
Epicardial fat located adjacent to the heart and coronary arteries is associated with increased cardiovascular risk. Irisin is a myokine produced by skeletal muscle after physical exercise, and originally described as a molecule able to promote the browning of white adipose tissue and energy expenditure. In order to decrease cardiovascular risk, it has been proposed as a promising therapeutic target in obesity and type 2 diabetes. We investigated the relationships between serum concentrations of irisin and the adipokines adiponectin and leptin and body fat including epicardial fat in patients undergoing cardiovascular surgery. We obtained serum samples from 93 patients undergoing cardiovascular surgery (age 69.6 (SD 12.8) years, BMI 24.1 ± 4.8 kg/m2). Computed tomography (CT) and echocardiographic data were obtained from the routine preoperative examination. Subcutaneous fat area (SFA, cm2) and visceral fat area (VFA, cm2) near the umbilicus were automatically measured using the standard fat attenuation range. Epicardial fat area (EFA, cm2) was measured at the position where the heart became a long axis image with respect to the apex of the heart in the coronal section image. Total body fat mass, body fat percentage, and skeletal muscle volume (SMV) were estimated using bioelectrical impedance analysis (BIA). Serum irisin concentration was measured by enzyme-linked immunosorbent assay, and compared with adiponectin and leptin concentrations. The data were also compared with the clinical biochemical data. EFA was strongly correlated with BMI (P = 0.0001), non-HDL-C (P = 0.029), TG (P = 0.004), body fat mass (P = 0.0001), and body fat percentage (P = 0.0001). Serum leptin concentration showed a significant positive correlation with BMI (P = 0.0001) and TG (P = 0.001). Adiponectin, but not irisin, showed a significant negative correlation with BMI (P = 0.006) and TG (P = 0.001). Serum leptin level had a significant positive correlation with EFA, VFA, and SFA. In contrast, the serum adiponectin level was significantly negatively correlated with EFA, VFA, and SFA. The serum irisin level was also negatively correlated with EFA (r = -0.249, P = 0.015), and SFA (r = -0.223, P = 0.039), and tended to correlate with VFA (r = -0.198, P = 0.067). The serum level of adiponectin was negatively correlated with that of leptin (r = -0.296, P = 0.012), but there were no significant correlations between irisin and either adiponectin or leptin. Multivariate linear regression demonstrated that EFA showed a positive association with serum leptin level (β = 0.438, P = 0.0001) and a negative correlation with serum irisin level (β = -0.204, P = 0.038) and serum adiponectin level (β = -0.260, P = 0.015) after adjusting for age, sex, and BMI. The present study provided the first evidence of associations of the serum irisin and adipokines (adiponectin and leptin) concentrations with epicardial fat in cardiovascular surgery patients. Irisin may play a role in preventing excess adiposity including epicardial fat, and consequently cardiovascular risk in patients.
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Affiliation(s)
- Hiroyuki Kaneda
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Toshiaki Nakajima
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
- * E-mail:
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Ikuko Shibasaki
- Department of Cardiovascular Surgery, Dokkyo Medical University, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Takaaki Hasegawa
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Tatsuya Sawaguchi
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Toshiyuki Kuwata
- Department of Cardiovascular Surgery, Dokkyo Medical University, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Syoutarou Obi
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Takuo Arikawa
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Hirohisa Amano
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Hirotsugu Fukuda
- Department of Cardiovascular Surgery, Dokkyo Medical University, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Teruo Inoue
- Department of Cardiovascular Medicine, Dokkyo Medical University and Heart Center, Dokkyo Medical University Hospital, Tochigi, Japan
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12
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Haruyama A, Kameyama A, Ono T, Baba Y, Sugiyama T, Sugiyama S, Takahashi T. Combined effects of electric toothbrushing and dentifrice
on artificial stain removal: An in vitro study. J Clin Exp Dent 2018; 10:e200-e205. [PMID: 29721218 PMCID: PMC5923887 DOI: 10.4317/jced.54312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 01/12/2018] [Indexed: 11/05/2022] Open
Abstract
Background This in vitro study aimed to clarify the combined effect of electric toothbrushing and dentifrice on the removal of artificial stain. Material and Methods Twenty-five bovine incisors were cut at the cervix and the crown was embedded in auto-cured acrylic resin. Specimens were abraded using #240 SiC paper to obtain a flat enamel surface, and 20 specimens were treated with 10% citric acid / 3% ferric chloride solution followed by 1% tannic acid solution to produce surface staining. They were divided into four groups: 1) brushing with an electric toothbrush and whitening dentifrice (group S+B); 2) brushing with an electric toothbrush and fluoride dentifrice (group S+C); 3) brushing with an electric toothbrush and no dentifrice (group S); and 4) no brushing (control group). The remaining five specimens were used as a baseline. Color values (L*, a*, and b* were measured before brushing (0 min), and at 1 min, 5 min, 10 min, and 20 min using a microscopic area spectrophotometer. The color change (ΔE) was calculated by subtracting the baseline values from the final color values obtained at each time point. The data were statistically analyzed using two-way repeated-measures analysis of variance and Tukey’s honest significant difference test as a post hoc test (p<0.05). Results The L* values of groups S+B and S+C increased over time (p<0.05), but no significant differences were observed in group S and the control group at any of the time points (p>0.05). Groups S+B and S+C demonstrated greater ΔE values than group S. Conclusions The combination of electric toothbrushing and dentifrice removed the artificial stain more effectively than brushing without dentifrice. However, the stain removal was limited. The two dentifrices evaluated in this study exhibited similar stain removal effects. Key words:Color change, stain removal, dentifrice, electric toothbrush, whitening effect.
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13
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Inami S, Abe S, Watanabe R, Saito F, Sakuma M, Haruyama A, Amano H, Arikawa T, Toyoda S, Inoue T. Radiation-Induced Coronary Artery Disease Manifested at Very Late Phase. Int Heart J 2017; 58:993-997. [PMID: 29151482 DOI: 10.1536/ihj.16-495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We report the case of a 51-year-old female, in whom coronary artery disease such as occlusion of septal perforators was manifested, on the occasion of hospitalization with congestive heart failure. The patient had a history of radiation therapy for a mediastinal tumor 19 years previously. As she had no conventional coronary risk factors, the cause of the coronary artery disease is thought to have been related to the radiation therapy. As survival rates of cancer patients improve as a consequence of therapeutic advances, we should be aware of the possibility of coronary artery disease as a very late complication of radiation therapy, even in patients who have no coronary risk factors.
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Affiliation(s)
- Shu Inami
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Shichiro Abe
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Ryo Watanabe
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Fumiya Saito
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Hirohisa Amano
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Takuo Arikawa
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University
| | - Teruo Inoue
- Department of Cardiovascular Medicine, Dokkyo Medical University
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14
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Toyoda S, Haruyama A, Inami S, Amano H, Arikawa T, Inoue T. Highly Sensitive Cardiac Troponin T and N-Terminal Pro-BNP Between Bisoprolol and Carvedilol in Patients With Chronic Heart Failure. J Card Fail 2017. [DOI: 10.1016/j.cardfail.2017.08.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Sugiyama T, Kameyama A, Enokuchi T, Haruyama A, Chiba A, Sugiyama S, Hosaka M, Takahashi T. Effect of professional dental prophylaxis on the surface gloss and roughness of CAD/CAM restorative materials. J Clin Exp Dent 2017. [PMID: 28638554 PMCID: PMC5474333 DOI: 10.4317/jced.53826] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background This study aimed to evaluate the effect of dental prophylaxis on the surface gloss and roughness of different indirect restorative materials for computer-aided design/computer-aided manufacturing (CAD/CAM): two types of CAD/CAM composite resin blocks (Shofu Block HC and Estelite Block) and two types of CAD/CAM ceramic blocks (IPS Empress CAD and Celtra DUO). Material and Methods After polishing the CAD/CAM blocks and applying prophylaxis pastes, professional dental prophylaxis was performed using four different experimental protocols (n = 5 each): mechanical cleaning with Merssage Regular for 10 s four times (Group 1); four cycles of mechanical cleaning with Merssage Regular for 10 s and Merssage Fine for 10 s (Group 2); four cycles of mechanical cleaning with Merssage Regular for 10 s and Merssage Fine for 30 s (Group 3); and mechanical cleaning with Merssage Fine for 10 s four times (Group 4). A glossmeter was used to measure surface gloss before and after mechanical cleaning, and a contact stylus profilometer was used to measure surface roughness (Ra). Results Polishing with prophylactic paste led to a significant reduction in surface gloss and increase in surface roughness among resin composite blocks, whereas the polishing-related change in surface gloss or roughness was smaller in Celtra DUO, a zirconia-reinforced lithium silicate block. Conclusions Changes in surface gloss and roughness due to polishing with a prophylactic paste containing large particles were not improved by subsequent polishing with a prophylactic paste containing fine particles. Key words:CAD/CAM, professional dental prophylaxis, prophylactic paste, surface gloss, surface roughness.
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Affiliation(s)
- Toshiko Sugiyama
- Senior Assistant Professor, Division of General Dentistry, Tokyo Dental College Chiba Hospital, 1-2-2 Masago, Mihama-ku, Chiba, Japan
| | - Atsushi Kameyama
- Associate Professor, Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba, Japan
| | - Tomoka Enokuchi
- Student, Tokyo Dental College School of Dental Hygiene, 1-2-2 Masago, Mihama-ku, Chiba, Japan
| | - Akiko Haruyama
- Senior Assistant Professor, Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, 2-9-18 Misaki-cho, Chiyoda-ku, Tokyo, Japan
| | - Aoi Chiba
- Student, Tokyo Dental College School of Dental Hygiene, 1-2-2 Masago, Mihama-ku, Chiba, Japan
| | - Setsuko Sugiyama
- Assistant Professor, Division of General Dentistry, Tokyo Dental College Chiba Hospital, 1-2-2 Masago, Mihama-ku, Chiba, Japan
| | - Makoto Hosaka
- Clinical Professor, Division of General Dentistry, Tokyo Dental College Chiba Hospital, 1-2-2 Masago, Mihama-ku, Chiba Japan
| | - Toshiyuki Takahashi
- Associate Professor and Head, Division of General Dentistry, Tokyo Dental College Chiba Hospital, 1-2-2 Masago, Mihama-ku, Chiba, Japan
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16
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Toyoda S, Haruyama A, Inami S, Amano H, Arikawa T, Sakuma M, Abe S, Tanaka A, Node K, Inoue T. Protective effects of bisoprolol against myocardial injury and pulmonary dysfunction in patients with chronic heart failure. Int J Cardiol 2017; 226:71-76. [DOI: 10.1016/j.ijcard.2016.10.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/15/2016] [Accepted: 10/17/2016] [Indexed: 01/18/2023]
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Isobe S, Ieda M, Kohno T, Nishiyama T, Maekawa Y, Tsuruta H, Murata M, Yashima F, Yanagisawa R, Tanaka M, Inami S, Nasuno T, Haruyama A, Sano M, Hayashida K, Fukuda K. Effective Cibenzoline Treatment in a Patient With Midventricular Obstruction After Transcatheter Aortic Valve Implantation. Circ Heart Fail 2015; 9:e002629. [PMID: 26699394 DOI: 10.1161/circheartfailure.115.002629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 11/20/2015] [Indexed: 11/16/2022]
Affiliation(s)
- Sarasa Isobe
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Masaki Ieda
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.).
| | - Takashi Kohno
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Takahiko Nishiyama
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Yuichiro Maekawa
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Hikaru Tsuruta
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Mitsushige Murata
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Fumiaki Yashima
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Ryo Yanagisawa
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Makoto Tanaka
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Shu Inami
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Takahisa Nasuno
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Akiko Haruyama
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Motoaki Sano
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Kentaro Hayashida
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
| | - Keiichi Fukuda
- From the Division of Cardiology, Keio University, Shinanomachi, Tokyo, Japan (S.I., M.I., T.K., T.N., Y.M., H.T., M.M., F.Y., R.Y., M.T., M.S., K.H., K.F.); and Department of Cardiovascular Medicine, Dokkyo Medical University, Shimotsuga, Tochigi, Japan (S.I., T.N., A.H.)
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Arikawa T, Toyoda S, Haruyama A, Amano H, Inami S, Otani N, Sakuma M, Taguchi I, Abe S, Node K, Inoue T. Impact of Obstructive Sleep Apnoea on Heart Failure with Preserved Ejection Fraction. Heart Lung Circ 2015; 25:435-41. [PMID: 26585831 DOI: 10.1016/j.hlc.2015.09.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 08/17/2015] [Accepted: 09/14/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND The impact of obstructive sleep apnoea on heart failure with preserved ejection fraction is unknown. METHODS Fifty-eight patients who had heart failure with a left ventricular ejection fraction; ≥50% underwent a sleep study. Brain natriuretic peptide (BNP) levels were determined at enrolment and at one, six, 12 and 36 months after enrolment. RESULTS Obstructive sleep apnoea was found in 39 patients (67%), and they were all subsequently treated with continuous positive airway pressure. Echocardiography at admission showed that E/E' tended to be higher in the 39 patients with, than in the 19 patients without, obstructive sleep apnoea (15.0±3.6 vs 12.1±1.9, respectively, P=0.05). The median BNP levels at enrolment were similar in patients with and without obstructive sleep apnoea [median (interquartile range): 444 (233-752) vs 316 (218-703) pg/ml]. Although BNP levels decreased over time in both groups, the reduction was less pronounced in patients with obstructive sleep apnoea (P<0.05). Consequently, BNP levels were higher in patients with sleep apnoea at six months, [221 (137-324) vs 76 (38-96) pg/ml, P<0.05], 12 months [123 (98-197) vs 52 (38-76) pg/ml, P<0.05] and 36 months [115 (64-174) vs 56 (25-74) pg/ml, P<0.05]. CONCLUSION Obstructive sleep apnoea, even when treated appropriately, may worsen long-term cardiac function and outcomes in patients who have heart failure with preserved ejection fraction.
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Affiliation(s)
- Takuo Arikawa
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan.
| | - Shigeru Toyoda
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
| | - Akiko Haruyama
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
| | - Hirohisa Amano
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
| | - Shu Inami
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
| | - Naoyuki Otani
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
| | - Masashi Sakuma
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
| | - Isao Taguchi
- Department of Cardiology, Koshigaya Hospital, Dokkyo Medical University, 343-8555 Koshigaya, Japan
| | - Shichiro Abe
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University Faculty of Medicine, 849-8501 Saga, Japan
| | - Teruo Inoue
- Department of Cardiovascular Medicine, Dokkyo Medical University, 321-0293 Mibu, Japan
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Affiliation(s)
- Akio Noro
- Division of General Dentistry, Tokyo Dental College Chiba Hospital
| | - Atsushi Kameyama
- Division of General Dentistry, Department of Clinical Oral Health Science, Tokyo Dental College
- Division of General Dentistry, Tokyo Dental College Chiba Hospital
| | - Akiko Haruyama
- Division of General Dentistry, Department of Clinical Oral Health Science, Tokyo Dental College
- Division of General Dentistry, Tokyo Dental College Chiba Hospital
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20
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Haruyama A, Kameyama A, Tatsuta C, Ishii K, Sugiyama T, Sugiyama S, Takahashi T. Influence of different rubber dam application on intraoral temperature and relative humidity. Bull Tokyo Dent Coll 2014; 55:11-7. [PMID: 24717925 DOI: 10.2209/tdcpublication.55.11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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]
Abstract
The purpose of this study was to investigate the effect of type of rubber dam and application method on the moisture exclusion effect. The intraoral temperature and relative humidity were compared among various moisture exclusion appliances. Various dry field techniques were applied to 5 subjects and intraoral temperature and relative humidity measured 5 min after placing a digital hygro-thermometer in the mouth. The relative humidity was 100% in all subjects when moisture was excluded by means of cotton rolls alone. When only tooth 36 was exposed, relative humidity was significantly lower with latex, urethane, or 3-dimensional sheets than with cotton rolls alone, and was similar to the level of humidity in the room. When a local rubber dam was used, the relative humidity was significantly higher than the indoor humidity (p<0.05). No significant differences were noted in the intraoral temperature or relative humidity between exposure of 4 teeth and 1 tooth, but variation in the relative humidity was more marked in 4- than in 1-tooth exposure. The creation of an air vent did not influence the moisture exclusion effect. These results suggest that the rubber dam isolation technique excludes moisture to a level equivalent to the humidity in the room when only a single tooth is exposed, but the moisture exclusion effect may be inconsistent when several teeth are exposed.
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Affiliation(s)
- Akiko Haruyama
- Division of General Dentistry, Department of Clinical Oral Health Science, Tokyo Dental College
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21
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Yamakura D, Takahashi T, Kameyama A, Noro A, Sugiyama T, Kondo Y, Sugiyama S, Haruyama A, Takeda T, Nakajima K. Analysis of dental treatment performed by dental residents at General Dentistry Department of Tokyo Dental College Chiba Hospital over 6 years following introduction of mandatory dental clinical training system. Bull Tokyo Dent Coll 2013; 54:177-86. [PMID: 24334632 DOI: 10.2209/tdcpublication.54.177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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]
Abstract
Six years have passed since the introduction of legislation mandating at least 1 year of clinical training for those who have passed the national dentist examination. To determine whether clinical training has been appropriately implemented at the General Dentistry Department of Tokyo Dental College Chiba Hospital, a managed-type clinical training facility, the number of patients treated and types of dental and dental technical work performed by dental residents trained by the department were summarized and analyzed. The number of patients treated per dental resident increased from 11 in 2006 to 15 in 2011. By treatment type, periodontic treatment was the most frequently performed throughout the study period, followed by endodontic treatment. Conservation treatment, prosthodontic treatment with crowns/bridges, and prosthodontic treatment with dentures were performed at a similar moderate frequency, while oral surgical treatment was performed least frequently throughout the study period. The frequency of periodontic treatment increased slightly, whereas that of endodontic treatment decreased slightly or remained almost unchanged after introduction of the mandatory clinical training system. When the distribution of dental treatment performed at our department was compared with that of dental treatment performed by general dentists across Japan in 2011, our department showed a slightly lower frequency of periodontic treatment and higher frequency of endodontic treatment than the national total, whereas the frequency of other types of treatment was similar between the two populations. These results demonstrated that appropriate clinical training has been provided by our department to meet the purpose of offering dentists the opportunity to acquire the basic diagnostic and treatment abilities that would enable them to provide appropriate treatment for injuries and diseases frequently encountered in daily practice. The study also revealed some problems, such as a decreasing number of residents engaging in dental technical work each year. For additional improvement in the quality of dental clinical training, more analyses are needed to further identify and address potential problems in the system.
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Affiliation(s)
- Daiki Yamakura
- Division of General Dentistry, Tokyo Dental College Chiba Hospital
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22
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Takahashi T, Furusawa M, Katakura A, Sugito H, Hirata S, Ishii T, Kameyama A, Noro A, Yamakura D, Kondou Y, Sugiyama T, Sugiyama S, Haruyama A, Asami M. Recent Trends among Dental Residents at Tokyo Dental College. Bull Tokyo Dent Coll 2013; 54:187-94. [DOI: 10.2209/tdcpublication.54.187] [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: 11/06/2022]
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23
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Toyoda S, Uehara D, Koizumi S, Haruyama A, Nishi Y, Inami S, Otani N, Amano H, Arikawa T, Inoue T. Comparison of the Effects of Two Beta Blockers, Bisoprolol and Carvedilol on Chronic Heart Failure. J Card Fail 2012. [DOI: 10.1016/j.cardfail.2012.08.172] [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: 10/27/2022]
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24
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Koizumi S, Fukuda R, Koshiji N, Haruyama A, Nishi Y, Inami S, Amano H, Arikawa T, Toyoda S, Inoue T. The Short-term Efficacy and Safety of Tolvaptan for the Heart Failure Patients with Resistance to Diuretics. J Card Fail 2012. [DOI: 10.1016/j.cardfail.2012.08.266] [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: 11/27/2022]
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Kameyama A, Kato J, De Munck J, Hatayama H, Haruyama A, Yoshinari M, Takase Y, Van Meerbeek B, Tsunoda M. Light-curing efficiency of dental adhesives by gallium nitride violet-laser diode determined in terms of ultimate micro-tensile strength. Biomed Mater Eng 2012; 21:347-56. [PMID: 22561254 DOI: 10.3233/bme-2012-0682] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The purpose of this study was to evaluate whether violet-laser diode (VLD) can be used as light-curing source. The ultimate (micro-)tensile strength (μTS) of three adhesives was determined when cured by VLD in comparison with curing by two different types of commercial LED light-curing units. One VLD (VLM 500) and two LED units (Curenos and G-Light Prima) were used to cure the adhesive resin of the two-step self-etch adhesives Clearfil SE Bond, Tokuso Mac Bond II, and FL-Bond II. A 0.6-mm thick acrylic mould was filled with adhesive resin and cured for 60 s. After 24-h water storage, specimens were trimmed into an hourglass shape with a width of 1.2 mm at the narrowest part, after which the μTS was determined (n=10). In addition, the light transmittance of each adhesive was characterized using a UV-vis-NIR spectrometer. No significant difference in curing efficiency between VLD and LED were observed for both Tokuso Mac Bond II and FL-Bond II (p>0.05). For Clearfil SE Bond, the μTS of VLD-cured specimens was higher than that of the specimens cured by the LED Curenos unit (p<0.05). Spectrometry revealed that this marked difference must be attributed to a different light transmittance of Clearfil SE Bond for visible blue light versus for the lower area of UV and visible violet light. In conclusion, A GaN-based violet laser diode can be used as light-curing source to initiate polymerization of dental resins.
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Affiliation(s)
- Atsushi Kameyama
- Division of General Dentistry, Tokyo Dental College Chiba Hospital, Japan.
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Kameyama A, Hatayama H, Kato J, Haruyama A, Teraoka H, Takase Y, Yoshinari M, Tsunoda M. Light-curing of dental resins with GaN violet laser diode: the effect of photoinitiator on mechanical strength. Lasers Med Sci 2011; 26:279-83. [PMID: 21344248 DOI: 10.1007/s10103-011-0896-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 02/02/2011] [Indexed: 10/18/2022]
Abstract
The purpose of this study was to evaluate whether a Gallium Nitride (GaN) -based violet laser diode (VLM500) could be used as a light source for light-cured dental resins. Three experimental unfilled resins containing different photoinitiators (camphorquinone, CQ; phenyl propanedione, PPD; or mono acylphosphineoxide, MAPO) were evaluated. These resins were light-cured with a VLM500 laser diode, and their ultimate micro-tensile strengths (μTS) were compared to those cured with three different LED light sources (Curenos, G-Light Prima-normal mode and G-Light Prima-PL mode). The VLM500 produced high μTS values in all three resins, and we concluded that this violet laser diode can be used as a light source for light-cured dental resin materials.
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Affiliation(s)
- Atsushi Kameyama
- Oral Health Science Center HRC7, Tokyo Dental College, Chiba, Japan.
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27
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Haruyama A, Toyoda S, Kikuchi M, Arikawa T, Inami S, Otani N, Amano H, Matsuda R, Inoue T. Campylobacter fetus as cause of prosthetic valve endocarditis. Tex Heart Inst J 2011; 38:584-587. [PMID: 22163142 PMCID: PMC3231519] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A 65-year-old woman who had previously undergone aortic root replacement with a bioprosthetic valve (Bentall operation) in treatment of annuloaortic ectasia became feverish after developing dental caries and was admitted to our hospital. Transesophageal echocardiography showed an 18 × 4-mm vegetation on her prosthetic valve. Campylobacter fetus was isolated on blood cultures, and she was diagnosed with infectious endocarditis. Aggressive combined antibiotic treatment was effective for her recovery. C. fetus infection is a rarely reported cause of prosthetic valve endocarditis.
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Affiliation(s)
- Akiko Haruyama
- Departments of Cardiovascular Medicine, Dokkyo Medical University, Mibu, Tochigi 321-0293, Japan
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Kameyama A, Hatayma H, Kato J, Haruyama A, Teraoka H, Takase Y, Yoshinari M, Tsunoda M. Spectral Characteristics of Light-curing Units and Dental Adhesives. J PHOTOPOLYM SCI TEC 2011. [DOI: 10.2494/photopolymer.24.411] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sugawara T, Kameyama A, Haruyama A, Oishi T, Kukidome N, Takase Y, Tsunoda M. Influence of handpiece maintenance sprays on resin bonding to dentin. Clin Cosmet Investig Dent 2010; 2:13-9. [PMID: 23662078 PMCID: PMC3645453 DOI: 10.2147/ccide.s8233] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To investigate the influence of maintenance spray on resin bonding to dentin. MATERIALS AND METHODS The crown of extracted, caries-free human molars was transversally sectioned with a model trimmer to prepare the dentin surfaces from mid-coronal sound dentin, and then uniformly abraded with #600 silicon carbide paper. The dentin surfaces were randomly divided into three groups: oil-free spray group where maintenance cleaner for air bearing handpieces was sprayed onto the dentin surface for 1 s and rinsed with water spray for 30 s; oil-containing spray group where maintenance cleaner for micro motor handpieces was sprayed onto the dentin surface for 1 s and rinsed with water spray for 30 s; and control group where the surface was rinsed with water spray for 30 s and then air-dried. These surfaces were then bonded with Clearfil SE Bond (Kuraray Medical), and resin composite (Clearfil AP-X, Kuraray Medical) build-up crowns were incrementally constructed on the bonded surfaces. After storage for 24 h in 37°C water, the bonded teeth were sectioned into hour-glass shaped slices (0.7-mm thick) perpendicular to the bonded surfaces. The specimens were then subjected to microtensile bond strength (μTBS) testing at a crosshead speed of 1.0 mm/min. Data were analyzed with one-way ANOVA and the Tukey-Kramer test. RESULTS Maintenance spray-contaminated specimens (oil-free and oil-containing spray groups) showed significantly lower μTBS than control specimens (P < 0.05). However, there was no significant difference between the spray-contaminated groups (P > 0.05). CONCLUSION Maintenance spray significantly reduces the bond strength of Clearfil SE Bond to dentin.
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Kameyama A, Kato J, Hatayama H, De Munck J, Haruyama A, Yoshinari M, Tsunoda M, Van Meerbeek B. Mechanical strength of dental adhesives cured by violet laser diode. Dent Mater 2010. [DOI: 10.1016/j.dental.2010.08.029] [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]
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Kameyama A, Nakazawa T, Haruyama A, Haruyama C, Hosaka M, Hirai Y. Influence of finishing/polishing procedures on the surface texture of two resin composites. Open Dent J 2008; 2:56-60. [PMID: 19088883 PMCID: PMC2581539 DOI: 10.2174/1874210600802010056] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Accepted: 02/13/2008] [Indexed: 11/22/2022] Open
Abstract
This study compared surface roughness and gloss produced by different finishing/polishing procedures for two resin composites, Clearfil AP-X (AP-X) and Estelite Sigma (ES). A total of 70 composite discs (n=35 for each resin composite) were prepared and divided at random into seven finishing/polishing groups (n=5): glass-pressed control; using a super-fine-grit diamond bur (SF); using CompoMaster (CM) after SF-finishing (SF+CM); using White Point (WP) after SF-finishing (SF+WP); using CM after SF+WP-finishing (SF+WP+CM); using Stainbuster (SB) after SF-finishing (SF+SB); and using CM after SF+SB-finishing (SF+SB+CM). After the finishing/polishing procedures, average surface roughness (R(a)) and surface gloss (Gs(60( degrees ))) of all specimens were assessed with a surface profilometer and specimen gloss meter, respectively. Glass-pressed controls for both AP-X and ES composites showed the best surface finish in terms of both R(a) and Gs(60( degrees )). SF-finishing produced the roughest surface and led to almost complete loss of gloss. While additional polishing with CM reduced R(a) and increased Gs(60( degrees )), the additional finishing effect of WP or SB between SF-finishing and CM-polishing was not found for either AP-X or ES.
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Affiliation(s)
- Atsushi Kameyama
- Department of Operative Dentistry, Tokyo Dental College, Chiba, Japan
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