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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, 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Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Takahara M, Katakami N, Hayashino Y, Nishimura R, Suzuki H, Shimano H, Yoshioka N, Tajima N, Yamasaki Y. Different impacts of metabolic profiles on future risk of cardiovascular disease between diabetes with and without established cardiovascular disease: the Japan diabetes complication and its prevention prospective study 7 (JDCP study 7). Acta Diabetol 2022; 59:57-65. [PMID: 34462827 PMCID: PMC8758607 DOI: 10.1007/s00592-021-01773-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/09/2021] [Indexed: 11/04/2022]
Abstract
AIMS Most risk calculators that predict future cardiovascular disease (CVD) by baseline profiles are originally developed for primary prevention, but some studies applied the calculators to secondary prevention. We compared the impact of baseline profiles on the future CVD risk between patients with diabetes with and without a CVD history. METHODS We analyzed a multicenter prospective cohort of 6338 Japanese patients with diabetes aged 40-74 years, including those with (n = 634) and without a CVD history (n = 5704). The future risk of CVD was investigated using the competing risk model, with adjustment for non-cardiovascular mortality. RESULTS During the median follow-up of 6.9 years, 413 CVD events were observed. The 8-year cumulative incidence rates of CVD were 21.5% and 7.2% in patients with and without a CVD history, respectively. A higher systolic blood pressure and lower high-density lipoprotein cholesterol levels were independently associated with a future CVD risk in patients without a CVD history (both P < 0.05), whereas they were not associated in those with a CVD history. The P values for interaction were 0.040 and 0.005, respectively. The male sex, an older age, a longer duration of diabetes, higher hemoglobin A1c levels, and higher low-density lipoprotein cholesterol levels were common independent risk factors regardless of CVD history (all P < 0.05). CONCLUSIONS The prognostic impact of metabolic profiles on CVD risk would not be identical between patients with and without a CVD history, suggesting that it might be inappropriate to apply CVD risk calculators developed for primary prevention to patients with a CVD history.
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Affiliation(s)
- Mitsuyoshi Takahara
- Department of Diabetes Care Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita City, Osaka, 565-0871, Japan
| | - Naoto Katakami
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita City, Osaka, 565-0871, Japan.
| | - Yasuaki Hayashino
- Department of Endocrinology, Tenri Hospital, 200 Mishimacho, Tenri City, Nara, 632-8552, Japan
| | - Rimei Nishimura
- Department of Diabetes, Metabolism and Endocrinology, Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Hiroaki Suzuki
- Department of Endocrinology and Metabolism, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan
| | - Hitoshi Shimano
- Department of Endocrinology and Metabolism, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan
| | - Narihito Yoshioka
- NTT-East Sapporo Hospital, Minami 1 Jyo Nishi 15 Chome Chuo-Ku, Sapporo City, Hokkaido, 060-0061, Japan
| | - Naoko Tajima
- Otemachi Place Medical Clinic, 2-3-1, Otemachi, Chiyoda-ku, Tokyo, 100-0004, Japan
| | - Yoshimitsu Yamasaki
- Nishi-Umeda Clinic, 3-3-45 Umeda, Kita-ku, Osaka City, Osaka, 530-0001, Japan
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Takahara M, Katakami N, Hayashino Y, Nishimura R, Suzuki H, Shimano H, Yoshioka N, Tajima N, Yamasaki Y. Correction to: Different impacts of metabolic profiles on future risk of cardiovascular disease between diabetes with and without established cardiovascular disease: the Japan diabetes complication and its prevention prospective study 7 (JDCP study 7). Acta Diabetol 2022; 59:67-68. [PMID: 34549332 PMCID: PMC8758641 DOI: 10.1007/s00592-021-01802-x] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Mitsuyoshi Takahara
- Department of Diabetes Care Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita City, Osaka, 565-0871, Japan
| | - Naoto Katakami
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita City, Osaka, 565-0871, Japan.
| | - Yasuaki Hayashino
- Department of Endocrinology, Tenri Hospital, 200 Mishimacho, Tenri City, Nara, 632-8552, Japan
| | - Rimei Nishimura
- Department of Diabetes, Metabolism and Endocrinology, Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Hiroaki Suzuki
- Department of Endocrinology and Metabolism, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan
| | - Hitoshi Shimano
- Department of Endocrinology and Metabolism, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan
| | - Narihito Yoshioka
- NTT-East Sapporo Hospital, Minami 1 Jyo Nishi 15 Chome Chuo-Ku, Sapporo City, Hokkaido, 060-0061, Japan
| | - Naoko Tajima
- Otemachi Place Medical Clinic, 2-3-1, Otemachi, Chiyoda-ku, Tokyo, 100-0004, Japan
| | - Yoshimitsu Yamasaki
- Nishi-Umeda Clinic, 3-3-45 Umeda, Kita-ku, Osaka City, Osaka, 530-0001, Japan
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Kambe N, Kitagawa Y, Kawasaki Y, Yamasaki Y, Takei S, Saito M. 209 TNF-Targeting Treatment Corrects Proinflammatory Signatures of Autoinflammatory Blau Syndrome. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.08.214] [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: 10/20/2022]
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Isomura Y, Yamasaki Y, Shirai Y, Kuwana M. AB0436 OUTCOMES OF DOSE-REDUCTION OR DISCONTINUATION OF TOCILIZUMAB IN PATIENTS WITH EARLY DIFFUSE CUTANEOUS SYSTEMIC SCLEROSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Potential efficacy and favorable safety profiles of tocilizumab (TCZ) have been demonstrated in patients with diffuse cutaneous systemic sclerosis (dcSSc) [1, 2]. However, clinical outcomes after dose-reduction or discontinuation of TCZ due to an improvement of skin thickness remain unclear.Objectives:To investigate the clinical outcomes after dose-reduction or discontinuation of TCZ in patients with dcSSc in a real-world setting.Methods:This is a single-center, retrospective, observational study using a database of consecutive SSc patients who visited our center between April 2014 and October 2020. For this study, we selected eligible patients from the database based on the following criteria: patients who (i) fulfilled the ACR/EULAR classification criteria, (ii) were classified as having dcSSc, (iii) had been treated with TCZ for at least 6 months, and (iv) were follow-up >6 months after TCZ introduction. Clinical information including demographic and clinical characteristics at TCZ introduction; dosing, administration route, and adherence of TCZ; and serial clinical parameters (modified Rondan total skin thickness score [mRSS], and percent predicted forced vital capacity [%FVC]), safety profiles, and outcomes after TCZ introduction regardless of TCZ continuation were extracted from the database.Results:Of 404 patients enrolled in the database, 13 dcSSc patients were eligible for this study. Baseline characteristics included a mean age of 51 ± 9 years, 85% female, disease duration of 27 ± 24 months, and mRSS of 19.5 ± 10.6. Seven patients (54%) had HRCT-confirmed ILD at baseline, and 9 (69%) were positive for anti-topoisomerase I antibody. Two (14%) and 11 (85%) were on mycophenolate mofetil and low-dose prednisolone (7.2 ± 6.0 mg/day), respectively. Seven patients (54%) each had active skin disease and elevated inflammatory markers defined in the phase III clinical trial [2], while only 4 (31%) fulfilled the inclusion criteria. TCZ was initially administered intravenously (8 mg/kg every 4 weeks) in 8 patients and subcutaneously in 5 (162 mg every 2 weeks in 4 and every week in one). At one year, mRSS was improved from 20.9 ± 11.4 to 10.7 ± 8.9 in 11 patients (p = 0.007), and %FVC was stable in 7 patients with ILD (76.8 ± 15.0 to 78.6 ± 16.1). During the observation period of 60.4 ± 26.7 months, 4 patients were treated with a stable dose of TCZ, while TCZ dose was reduced and/or discontinued in 9. Four of them discontinued TCZ due to adverse events (n = 2; acute lung injury and phlegmon) or prominent improvement of skin thickening (n = 2). Of 9 patients with dose reduction/discontinuation of TCZ, 4 patients who discontinued TCZ (n = 3) or received dose reduction of TCZ (n = 1) experienced a recurrence of progressive skin thickening together with inflammatory complications, including edematous induration of the skin, progression of ILD, polyarthritis, and/or pericarditis with increased inflammatory markers. The interval between dose-reduction/discontinuation of TCZ and clinical worsening ranged from 2 to 11 months. These manifestations were promptly improved by dose-escalation or resumption of TCZ in all patients except one who experienced progressive ILD and died of respiratory failure 27 months later.Conclusion:In dcSSc patients who experienced improvement of skin thickness during treatment with TCZ, dose-reduction or discontinuation of TCZ may result in a recurrence of the disease. Randomized comparative studies are necessary to examine optimal timing for dose-reduction or discontinuation of TCZ in dcSSc patients after improvement of skin thickness.References:[1]Khanna, D., et al., Safety and efficacy of subcutaneous tocilizumab in systemic sclerosis: results from the open-label period of a phase II randomised controlled trial (faSScinate). Ann Rheum Dis, 2018. 77(2):212-220.[2]Khanna, D., et al., Tocilizumab in systemic sclerosis: a randomised, double-blind, placebo-controlled, phase 3 trial. Lancet Respir Med, 2020; 8(10): 963-974.Disclosure of Interests:Yohei Isomura: None declared, Yoshioki Yamasaki Speakers bureau: Boehringer-Ingelheim, Nippon Shinyaku, Bristol Myers, Yuichiro Shirai Speakers bureau: Janssen, Grant/research support from: Janssen, Masataka Kuwana Speakers bureau: Abbie, Astellas, Asahi Kasei Parma, Boehringer-Ingelheim, Chugai, Eisai, Janssen, MBL, Mochida, Nippon Shinyaku, Ono Pharmaceuticals, Pfizer, Tanabe-Mitsubishi, Consultant of: Boehringer-Ingelheim, Chugai, Corbus, MBL, Mochida, Grant/research support from: Boehringer-Ingelheim, Chugai, Eisai, MBL, Ono Pharmaceuticals, Tanabe-Mitsubishi
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Kashihara N, Yamasaki Y, Osonoi T, Harada H, Shibagaki Y, Zhao J, Kim H, Yajima T, Sarai N. A phase 3 multicenter open-label maintenance study to investigate the long-term safety of sodium zirconium cyclosilicate in Japanese subjects with hyperkalemia. Clin Exp Nephrol 2021; 25:140-149. [PMID: 33098526 PMCID: PMC7880936 DOI: 10.1007/s10157-020-01972-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 09/02/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Hyperkalemia is associated with many chronic diseases and renin-angiotensin-aldosterone system inhibitor therapy. Sodium zirconium cyclosilicate (SZC), an oral, highly selective cation-exchanger, is approved for the treatment of hyperkalemia. METHODS This phase 3, multicenter, open-label, single-arm, flexible-dose study assessed the safety and efficacy of SZC in Japanese patients with hyperkalemia during a correction phase of up to 3 days and long-term (1 year) maintenance phase (NCT03172702). RESULTS Overall, 150 patients received treatment during both study phases; the study population was generally representative of hyperkalemic Japanese patients in clinical practice. Most patients (78.7%) had three doses of SZC during the correction phase. All but one patient received SZC for ≤ 48 h before transitioning to the maintenance phase. In the maintenance phase, mean (standard deviation; SD) exposure to the study drug was 319.4 (98.1) days and mean (SD) dose was 7.38 (2.85) g/day. Adverse events (AEs) were reported in 131 patients (87.3%); most were mild. The most common treatment-related AEs as evaluated by investigators were constipation (6.7%), peripheral edema (4.0%), and hypertension (2.7%). In the correction phase, 78.7% of patients were normokalemic at 24 h and 98.7% within 48 h; ≥ 65.5% maintained normokalemia throughout the maintenance phase. CONCLUSION After a year of exposure, SZC treatment was well tolerated by Japanese patients and potassium levels were well controlled.
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Affiliation(s)
- Naoki Kashihara
- Department of Nephrology and Hypertension, Kawasaki Medical School, Okayama, Japan
| | | | - Takeshi Osonoi
- Department of Internal Medicine, Nakakinen Clinic, Ibaraki, Japan
| | - Hiromasa Harada
- Departments of Internal Medicine, Yao Tokushukai General Hospital, Osaka, Japan
| | - Yugo Shibagaki
- Division of Nephrology and Hypertension, St. Marianna University School of Medicine Hospital, Kanagawa, Japan
| | - June Zhao
- CVRM Late-Stage Development, AstraZeneca Gaithersburg, Gaithersburg, USA
| | - Hyosung Kim
- Research and Development, AstraZeneca K.K, 1-8-3, Marunouchi, Chiyoda-ku, Tokyo, 100-0005, Japan
| | - Toshitaka Yajima
- Research and Development, AstraZeneca K.K, 1-8-3, Marunouchi, Chiyoda-ku, Tokyo, 100-0005, Japan
| | - Nobuaki Sarai
- Research and Development, AstraZeneca K.K, 1-8-3, Marunouchi, Chiyoda-ku, Tokyo, 100-0005, Japan.
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Honda T, Yamasaki Y, Nakao H, Murakami Y, Ogura T, Kousaka Y, Akimitsu J. Topological metastability supported by thermal fluctuation upon formation of chiral soliton lattice in [Formula: see text]. Sci Rep 2020; 10:18596. [PMID: 33122696 PMCID: PMC7596096 DOI: 10.1038/s41598-020-74945-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 10/07/2020] [Indexed: 11/29/2022] Open
Abstract
Topological magnetic structure possesses topological stability characteristics that make it robust against disturbances which are a big advantage for data processing or storage devices of spintronics; nonetheless, such characteristics have been rarely clarified. This paper focused on the formation of chiral soliton lattice (CSL), a one-dimensional topological magnetic structure, and provides a discussion of its topological stability and influence of thermal fluctuation. Herein, CSL responses against change of temperature and applied magnetic field were investigated via small-angle resonant soft X-ray scattering in chromium niobium sulfide ([Formula: see text]). CSL transformation relative to the applied magnetic field demonstrated a clear agreement with the theoretical prediction of the sine-Gordon model. Further, there were apparent differences in the process of chiral soliton creation and annihilation, discussed from the viewpoint of competing between thermal fluctuation and the topological metastability.
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Affiliation(s)
- T. Honda
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801 Japan
| | - Y. Yamasaki
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801 Japan
- Research and Services Division of Materials Data and Integrated System (MaDIS), National Institute for Materials Science (NIMS), Tsukuba, 305-0047 Japan
- Center for Emergent Matter Science (CEMS), RIKEN, Wako, 351-0198 Japan
- PRESTO, Japan Science and Technology Agency (JST), Saitama, Japan
| | - H. Nakao
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801 Japan
| | - Y. Murakami
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, 305-0801 Japan
| | - T. Ogura
- Department of Physics and Mathematics, Aoyama-Gakuin University, Sagamihara, Kanagawa 252-5258 Japan
| | - Y. Kousaka
- Department of Physics and Electronics, Osaka Prefecture University, Osaka, 599-8531 Japan
| | - J. Akimitsu
- Research Institute for Interdisciplinary Science, Okayama University, Okayama, 700-8530 Japan
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Van Der Velde N, Huurman R, Yamasaki Y, Kardys I, Galema T, Budde R, Zijlstra F, Schinkel A, Michels M, Hirsch A. P1825 Myocardial bridging and coronary artery disease in hypertrophic cardiomyopathy: a matched case control study. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.1170] [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: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
None.
Introduction
The etiology of chest pain in hypertrophic cardiomyopathy (HCM) is diverse and includes coronary artery disease (CAD) as well as HCM-specific causes. Myocardial bridging (MB) has been associated with HCM, chest pain, and accelerated atherosclerosis. To investigate differences in the presence of MB and CAD, we compared HCM patients with age-, gender- and CAD pre-test probability (PTP)-matched outpatients presenting with chest pain.
Methods
We studied 84 HCM patients who underwent cardiac computed tomography and compared these with 168 matched controls (age 54 ± 11 years, 70% men, PTP 12% [5%–32%]). MB, calcium score, plaque morphology and presence and extent of CAD were assessed for each patient. Linear mixed models were used to assess differences between cases and controls.
Results
Differences between HCM patients and controls are described in the table. In summary, MB was more often seen in HCM patients (50% vs. 25%, p < 0.001), who were also more likely to have >1 segment affected (14% vs. 2%, p < 0.05). In the HCM group, MB was associated with pathogenic mutation status. Calcium score and the presence of obstructive CAD were similar in both groups (9 [0-225] vs. 4 [0-82] and 18% vs. 19%; p > 0.05 for both).
Conclusion
MB was twice as prevalent in the HCM group. However, in a matched analysis, the prevalence and extent of CAD was equal among patients with and without HCM. These finding illustrate that despite a higher prevalence of MB, the prevalence of CAD is similar between groups, also demonstrating satisfactory performance of pre-test risk prediction in HCM patients.
Assessment of CAD by CT HCM group(n = 84) Control group (n = 168) p-value Agatston score 9 [0-225] 4 [0-82] 0.22 No. of pts with score* 0.07 0-399 31 (89%) 149 (91%) >400 8 (11%) 15 (9%) Obstructive CAD 15 (18%) 32 (19%) 0.82 No. of pts with MB 42 (50%) 42 (25%) <0.001 No. of vessels with MB <0.001 1 34 (40%) 39 (23%) 2 8 (10%) 3 (2%) No. of pts with >1 segment with MB 12 (14%) 4 (2%) <0.001 Abbreviations CAD = Coronary artery disease, MB = Myocardial bridging, pts = patients *Only measured in 73/84 HCM patients and in 164/168 control patients
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Affiliation(s)
- N Van Der Velde
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - R Huurman
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - Y Yamasaki
- Kyushu University, Clinical Radiology, Fukuoka, Japan
| | - I Kardys
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - T Galema
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - R Budde
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - F Zijlstra
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - A Schinkel
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - M Michels
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
| | - A Hirsch
- Erasmus University Medical Center, Rotterdam, Netherlands (The)
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Sato N, Uno S, Yamasaki Y, Watanabe S, Hirano T. P278 Pharmacokinetics, pharmacodynamics and efficacy of OPC-61815, prodrug of tolvaptan for intravenous administration, in patients with congestive heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872.098] [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: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Otsuka Pharmaceutical Co. Ltd.
On Behalf
OPC-61815 phase II investigators
Background/Introduction: Tolvaptan, a vasopression V2-receptor antagonist, is effective for congestion in patients with congestive heart failure (CHF), and hyponatremia in patients with CHF and SIADH. But, this drug is not readily soluble in water and not suited for development as an injection. OPC-61815, a prodrug of tolvaptan having improved water solubility, is suitable for intravenous administration.
Purpose
The phase-II clinical study (ClinicalTrials.gov Identifier: NCT03254108) was conducted to investigate the dose for intravenous administration of OPC-61815 achieving tolvaptan exposure equivalent to that for oral administration of tolvaptan 15-mg tablet in CHF patients.
Methods
This study was a multicenter, a double-blind, randomized, active-controlled, parallel-group comparison clinical pharmacology trial. Sixty patients aged between 20 and 85 years with CHF with volume overload despite the use of conventional diuretics were randomly assigned to four treatment cohorts to receive OPC-61815 at doses of 2, 4, 8, 16 mg (i.v.) or tolvaptan at 15 mg (p.o.). Both drugs were administered once a day for 5 days. The primary endpoint was to assess the dose of OPC-61815 equivalent to tolvaptan at 15 mg using Cmax and AUC24h values after the first administration. Pharmacodynamics (urine volume, urine osmolality, serum electrolyte concentration, biomarkers), efficacy (body weight change, congestive symptoms) and safety were also evaluated.
Results
The mean Cmax and AUC of the metabolite tolvaptan increased dose-dependently following single intravenous administration of OPC-61815 at 2, 4, 8, and 16 mg. Tolvaptan exposure (Cmax and AUC24h) on Day 1 following single intravenous administration of OPC-61815 at 16 mg was the closest and similar to that following single administration of tolvaptan 15-mg tablet. OPC-61815 increased urine volume from baseline, leading to decrease in body weight and improvement of lower limb edema. The incidence of treatment-emergent adverse events was 54.2% (26/48 subjects) in the OPC-61815 2 to 16-mg, and 83.3% (10/12 subjects) in the tolvaptan 15-mg groups. No clinically relevant changes from baseline were found in laboratory parameters, vital signs, or ECG findings.
Conclusions
Tolvaptan exposure on Day 1 following single intravenous administration of OPC-61815 at 16 mg was the most similar to that following single administration of tolvaptan 15-mg tablet. There was no marked difference in tolerability between OPC-61815 at 16 mg and tolvaptan 15-mg tablet, and no clinically significant problems were observed.
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Affiliation(s)
- N Sato
- Nippon Medical School Musashi-Kosugi Hospital, Kanagawa, Japan
| | - S Uno
- Otsuka Pharmaceutical Co. Ltd, Headquarters of Clinical Development, Tokyo, Japan
| | - Y Yamasaki
- Otsuka Pharmaceutical Co. Ltd, Headquarters of Clinical Development, Tokyo, Japan
| | - S Watanabe
- Otsuka Pharmaceutical Co. Ltd, Headquarters of Clinical Development, Tokyo, Japan
| | - T Hirano
- Otsuka Pharmaceutical Co. Ltd. , Medical Affairs, Tokyo, Japan
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Nous F, Budde R, Lubbers M, Yamasaki Y, Musters P, Bruning T, Akkerhuis J, Kofflard M, Kietselaer B, Galema T, Nieman K. P6170Incremental value of on-site computed tomography-derived fractional flow reserve for the diagnosis and management strategy of obstructive coronary artery disease in the randomized CRESCENT trials. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0776] [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: 11/14/2022] Open
Abstract
Abstract
Background
Coronary computed tomography angiography (CCTA) accurately rules out coronary artery disease (CAD), but has a limited ability to predict hemodynamically significant CAD. Implementing on-site computed tomography-derived fractional flow reserve (CT-FFR) could improve the clinical value and efficiency of cardiac CT in the diagnostic work-up of patients with stable angina.
Purpose
To determine the impact of on-site CT-FFR on diagnostic effectiveness, management strategy and downstream invasive coronary angiography (ICA) in patients with suspected CAD.
Methods
196 patients (59.1±9.6 years, 47% women) with suspected CAD underwent a CCTA in the CRESCENT I and II trials. On-site CT-FFR analysis was performed in all patients with at least one ≥50% stenosis on CCTA (N=53). We assessed the effect of adding CT-FFR analysis to CCTA in terms of 1) diagnostic effectiveness, i.e. the number of additional tests required to determine the final diagnosis; 2) reclassification of the initial management strategy; 3) ICA efficiency, i.e. ICA rate without ≥50% CAD.
Results
CT-FFR was calculated in 42/53 (79%) of the eligible patients as it could not be calculated in patients with suspected coronary total occlusion (N=7), severe coronary calcification (N=2), severe CT artefacts (N=1) or missing CT images (N=1). CT-FFR ≤0.80 was present in 27/196 (14%) patients, including 8/196 (4%) patients with high-risk ischemia (CT-FFR ≤0.80 in all three vessels, left main or proximal left anterior descending coronary artery). The final diagnosis was achieved with CT-FFR in an additional 30/196 (15%) patients compared to CT alone (p<0.0001), and rendered 42/56 (75%) of additional tests unnecessary (p<0.0001). The initial management strategy was reclassified in 30/196 patients (15%, p<0.0001); 24/196 (12%) patients were reclassified to optimal medical therapy and 6/196 (3%) patients were reclassified directly to ICA including 4/8 (50%) patients with high-risk CAD on ICA. CT-FFR would result in 6/32 (19%, p=0.012) ICA cancellations in which none of the patients had high-risk CAD. The rate of ICA without ≥50% stenosis would decrease from 22% (7/32) to 11% (3/27) (p=0.012).
Conclusion
Implementation of CT-FFR has the potential for improved diagnostic effectiveness. Functional reclassification of CAD provides more efficient ICA referral in patients with suspected CAD compared to CTA alone.
Acknowledgement/Funding
Dutch Heart Foundation [NHS 2014T061 and NHS 2013T071]
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Affiliation(s)
- F Nous
- Erasmus Medical Centre, Rotterdam, Netherlands (The)
| | - R Budde
- Erasmus Medical Centre, Rotterdam, Netherlands (The)
| | - M Lubbers
- Erasmus Medical Centre, Rotterdam, Netherlands (The)
| | | | - P Musters
- Erasmus Medical Centre, Rotterdam, Netherlands (The)
| | - T Bruning
- Maasstad Ziekenhuis, Rotterdam, Netherlands (The)
| | - J Akkerhuis
- Sint Franciscus Gasthuis, Rotterdam, Netherlands (The)
| | - M Kofflard
- Albert Schweitzer Hospital, Dordrecht, Netherlands (The)
| | - B Kietselaer
- Maastricht University Medical Centre (MUMC), Maastricht, Netherlands (The)
| | - T Galema
- Erasmus Medical Centre, Rotterdam, Netherlands (The)
| | - K Nieman
- Stanford University, Palo Alto, United States of America
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Hamada K, Yamasaki Y, Kubota J, Okada H. Gastrointestinal: The first report of an esophageal xanthoma in the cervical inlet patch. J Gastroenterol Hepatol 2018; 33:1938. [PMID: 30084136 DOI: 10.1111/jgh.14386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 07/09/2018] [Indexed: 12/23/2022]
Affiliation(s)
- K Hamada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.,Department of Internal Medicine, Tajiri Hospital, Mimasaka, Japan
| | - Y Yamasaki
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - J Kubota
- Department of Internal Medicine, Tajiri Hospital, Mimasaka, Japan
| | - H Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Yamada Y, Toyokawa G, Tagawa T, Kamitani T, Yamasaki Y, Shoji F, Yamazaki K, Takeo S, Oda Y. Computed tomography features of resected lung adenocarcinomas with spread through air spaces. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy301.008] [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: 11/13/2022] Open
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Mathieu C, Dandona P, Gillard P, Senior P, Hasslacher C, Araki E, Lind M, Bain SC, Jabbour S, Arya N, Hansen L, Thorén F, Langkilde AM, Luquez C, Manghi FP, Ulla MR, Moisello MA, Visco V, De Lapertoza SG, Solis SE, Farias J, Sposetti G, Gillard P, Abrams P, van Ypersele de Strihou M, Conway J, Pedersen S, Senior P, Liutkus JF, Yip CE, Punthakee Z, Bernier F, Lochnan H, Woo V, Elliott T, Palma J, Merino CS, Vargas AD, Wendisch U, Reichel A, Seufert J, Becker B, Alawi H, Birkenfeld AL, Hasslacher C, Luedemann J, Schaum T, Marck C, Sauter J, Aigner U, Onishi Y, Seino H, Sato Y, Nunoi K, Yamauchi A, Nakashima E, Ikeda H, Shiraiwa T, Yamasaki Y, Yokoyama H, Nakamura K, Noritake M, Miyauchi S, Hakoda T, Hirohata Y, Hasegawa A, Fukumoto Y, Nagashima H, Takihata M, Kamada T, Jinnouchi H, Ono Y, Watanabe T, Ohashi H, Takai M, Seguchi T, Yamazaki K, Maeda H, Iwasaki S, De Valk H, Kooy A, Landewe-Cleuren S, Madziarska K, Stankiewicz A, Wasilewska K, Rudofsky G, Malecki M, Pankowska E, Szyprowska E, Lukaszewicz M, Tokarska L, Bondar I, Karpova I, Ruyatkina L, Zalevskaya A, Sardinov R, Khalimov Y, Sjoberg F, Koskinen P, Curiac D, Lind M, Bach-Kliegel B, Schultes B, Issa BG, Kilvert A, Pereira O, Bain S, Mishra B, Bhatnagar D, Chuck L, Gorson D, Robertson D, Casaubon L, Chaykin L, Frias JP, Hsia S, Jenders R, Lerman S, Segel S, Weissman P, Chang A, Reed J, Madu IJ, Bressler P, Abbott L, Gangi S, Wheeler K, Cohen K, Biggs W, Jabbour S, Karounos D, Menon S, Miers W, Aleppo G, Lefebvre G, Sugimoto D, Ferraro R, Kelly R, Twahirwa M, Case C, Klonoff D, Denker P, Hollander P, Welch M, Leinung M, Kotek L, McGill J, Shlesinger Y, Huffman C, Aronoff S, Lorber D, Terrelonge A, Akhrass F, Bredefeld C, Hershon K, Lenhard J, Donovan D, Stonesifer L, Greenberg C, Ipp E, Bhargava A, Bao S. Efficacy and Safety of Dapagliflozin in Patients With Inadequately Controlled Type 1 Diabetes (the DEPICT-2 Study): 24-Week Results From a Randomized Controlled Trial. Diabetes Care 2018; 41:1938-1946. [PMID: 30026335 DOI: 10.2337/dc18-0623] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [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: 03/21/2018] [Accepted: 06/18/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE This 24-week, double-blinded, phase 3 clinical trial (DEPICT-2; ClinicalTrials.gov, NCT02460978) evaluated efficacy and safety of dapagliflozin as adjunct therapy to adjustable insulin in patients with inadequately controlled type 1 diabetes (HbA1c 7.5-10.5%). RESEARCH DESIGN AND METHODS Patients were randomized 1:1:1 to dapagliflozin 5 mg (n = 271), dapagliflozin 10 mg (n = 270), or placebo (n = 272) plus insulin. Insulin dose was adjusted by investigators according to self-monitored glucose readings, local guidance, and individual circumstances. RESULTS Baseline characteristics were balanced between treatment groups. At week 24, dapagliflozin significantly decreased HbA1c (primary outcome; difference vs. placebo: dapagliflozin 5 mg -0.37% [95% CI -0.49, -0.26], dapagliflozin 10 mg -0.42% [-0.53, -0.30]), total daily insulin dose (-10.78% [-13.73, -7.72] and -11.08% [-14.04, -8.02], respectively), and body weight (-3.21% [-3.96, -2.45] and -3.74% [-4.49, -2.99], respectively) (P < 0.0001 for all). Mean interstitial glucose, amplitude of glucose excursion, and percent of readings within target glycemic range (>70 to ≤180 mg/dL) versus placebo were significantly improved. More patients receiving dapagliflozin achieved a reduction in HbA1c ≥0.5% without severe hypoglycemia compared with placebo. Adverse events were reported for 72.7%, 67.0%, and 63.2% of patients receiving dapagliflozin 5 mg, dapagliflozin 10 mg, and placebo, respectively. Hypoglycemia, including severe hypoglycemia, was balanced between groups. There were more adjudicated definite diabetic ketoacidosis (DKA) events with dapagliflozin: 2.6%, 2.2%, and 0% for dapagliflozin 5 mg, dapagliflozin 10 mg, and placebo, respectively. CONCLUSIONS Dapagliflozin as adjunct therapy to adjustable insulin in patients with type 1 diabetes was well tolerated and improved glycemic control with no increase in hypoglycemia versus placebo but with more DKA events.
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Affiliation(s)
- Chantal Mathieu
- Clinical and Experimental Endocrinology, University of Leuven, Leuven, Belgium
| | - Paresh Dandona
- Department of Medicine, State University of New York at Buffalo, Buffalo, NY
| | - Pieter Gillard
- Clinical and Experimental Endocrinology, University of Leuven, Leuven, Belgium
| | - Peter Senior
- Division of Endocrinology, University of Alberta, Edmonton, Canada
| | | | - Eiichi Araki
- Department of Metabolic Medicine, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Marcus Lind
- Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
- Department of Medicine, NU Hospital Group, Uddevalla, Sweden
| | - Stephen C. Bain
- Diabetes Research Unit, Swansea University, Swansea, Wales, U.K
| | - Serge Jabbour
- Division of Endocrinology, Diabetes and Metabolic Diseases, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, PA
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Yokoyama Y, Yamasaki Y, Taguchi M, Hirata Y, Takubo K, Miyawaki J, Harada Y, Asakura D, Fujioka J, Nakamura M, Daimon H, Kawasaki M, Tokura Y, Wadati H. Tensile-Strain-Dependent Spin States in Epitaxial LaCoO_{3} Thin Films. Phys Rev Lett 2018; 120:206402. [PMID: 29864291 DOI: 10.1103/physrevlett.120.206402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Indexed: 06/08/2023]
Abstract
The spin states of Co^{3+} ions in perovskite-type LaCoO_{3}, governed by the complex interplay between the electron-lattice interactions and the strong electron correlations, still remain controversial due to the lack of experimental techniques which can directly detect them. In this Letter, we revealed the tensile-strain dependence of spin states, i.e., the ratio of the high- and low-spin states, in epitaxial thin films and a bulk crystal of LaCoO_{3} via resonant inelastic soft x-ray scattering. A tensile strain as small as 1.0% was found to realize different spin states from that in the bulk.
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Affiliation(s)
- Y Yokoyama
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - Y Yamasaki
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
- National Institute for Materials Science (NIMS), Tsukuba 305-0047, Japan
| | - M Taguchi
- Nara Institute of Science and Technology (NAIST), 8916-5, Takayama, Ikoma, Nara 630-0192, Japan
| | - Y Hirata
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - K Takubo
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - J Miyawaki
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - Y Harada
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - D Asakura
- Research Institute for Energy Conservation, National Institute of Advance Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba 305-8568, Japan
| | - J Fujioka
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
| | - M Nakamura
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - H Daimon
- Nara Institute of Science and Technology (NAIST), 8916-5, Takayama, Ikoma, Nara 630-0192, Japan
| | - M Kawasaki
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Y Tokura
- Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - H Wadati
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
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Iwasaki T, Sato H, Suga H, Takemoto Y, Inada E, Saitoh I, Kakuno K, Kanomi R, Yamasaki Y. Influence of pharyngeal airway respiration pressure on Class II mandibular retrusion in children: A computational fluid dynamics study of inspiration and expiration. Orthod Craniofac Res 2018; 20:95-101. [PMID: 28414873 DOI: 10.1111/ocr.12145] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To examine the influence of negative pressure of the pharyngeal airway on mandibular retraction during inspiration in children with nasal obstruction using the computational fluid dynamics (CFD) method. SETTING AND SAMPLE POPULATION Sixty-two children were divided into Classes I, II (mandibular retrusion) and III (mandibular protrusion) malocclusion groups. MATERIAL AND METHODS Cone-beam computed tomography data were used to reconstruct three-dimensional shapes of the nasal and pharyngeal airways. Airflow pressure was simulated using CFD to calculate nasal resistance and pharyngeal airway pressure during inspiration and expiration. RESULTS Nasal resistance of the Class II group was significantly higher than that of the other two groups, and oropharyngeal airway inspiration pressure in the Class II (-247.64 Pa) group was larger than that in the Class I (-43.51 Pa) and Class III (-31.81 Pa) groups (P<.001). The oropharyngeal airway inspiration-expiration pressure difference in the Class II (-27.38 Pa) group was larger than that in the Class I (-5.17 Pa) and Class III (0.68 Pa) groups (P=.006). CONCLUSION Large negative inspiratory pharyngeal airway pressure due to nasal obstruction in children with Class II malocclusion may be related to their retrognathia.
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Affiliation(s)
- T Iwasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - H Sato
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - H Suga
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - Y Takemoto
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - E Inada
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
| | - I Saitoh
- Division of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Niigata University, Niigata-City, Japan
| | - K Kakuno
- Kanomi Orthodontic Office, Himeji-City, Japan
| | - R Kanomi
- Kanomi Orthodontic Office, Himeji-City, Japan
| | - Y Yamasaki
- Department of Pediatric Dentistry, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima-City, Japan
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Yamasaki Y, Fukada S, Hiyane K, Katayama K. Study on Transfer Behavior of Hydrogen Isotopes from Fluidized Li to Y for Li Blanket. Fusion Science and Technology 2017. [DOI: 10.1080/15361055.2017.1291028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Y. Yamasaki
- Kyushu University , Interdisciplinary Graduate School of Engineering Sciences, 6-1Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - S. Fukada
- Kyushu University , Interdisciplinary Graduate School of Engineering Sciences, 6-1Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - K. Hiyane
- Kyushu University , Interdisciplinary Graduate School of Engineering Sciences, 6-1Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - K. Katayama
- Kyushu University , Interdisciplinary Graduate School of Engineering Sciences, 6-1Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
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Katayama S, Yamada D, Nakayama M, Yamada T, Myoishi M, Kato M, Nowack C, Kolkhof P, Yamasaki Y. A randomized controlled study of finerenone versus placebo in Japanese patients with type 2 diabetes mellitus and diabetic nephropathy. J Diabetes Complications 2017; 31:758-765. [PMID: 28025025 DOI: 10.1016/j.jdiacomp.2016.11.021] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/24/2016] [Accepted: 11/25/2016] [Indexed: 10/20/2022]
Abstract
AIMS Finerenone (BAY 94-8862) is a novel non-steroidal mineralocorticoid receptor antagonist. The aim of this study was to compare the efficacy and safety of seven once-daily oral doses of finerenone (1.25-20mg) and placebo in 96 patients with type 2 diabetes mellitus (T2DM) and diabetic nephropathy (DN) receiving a RAS blocker. METHODS ARTS-DN Japan was a multicenter, randomized, double-blind, placebo-controlled, phase 2b study. RESULTS Analysis of the urinary albumin-to-creatinine ratio (UACR) at day 90 relative to baseline indicated a nominally significant effect of finerenone. The UACR at day 90 relative to baseline for each finerenone treatment group was numerically reduced compared with placebo. No serious adverse events (AEs) or deaths were reported and no patients experienced treatment-emergent AEs resulting in discontinuation of study drug. Small mean increases in serum potassium level were observed in the finerenone treatment groups (0.025-0.167mmol/L) compared with the placebo group (-0.075mmol/L); no patients developed hyperkalemia. CONCLUSION When given in addition to a RAS inhibitor, finerenone reduced albuminuria without adverse effects on serum potassium levels or renal function in Japanese patients with T2DM and DN.
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Affiliation(s)
| | | | | | | | | | | | - Christina Nowack
- Global Clinical Development, Bayer Pharma AG, Wuppertal, Germany
| | - Peter Kolkhof
- Heart Diseases Research, Global Drug Discovery, Bayer Pharma AG, Wuppertal, Germany
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Yamasaki Y, Kuwatsuru R, Tsukiyama Y, Oki K, Koyano K. Objective assessment of mastication predominance in healthy dentate subjects and patients with unilateral posterior missing teeth. J Oral Rehabil 2016; 43:575-82. [DOI: 10.1111/joor.12403] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/27/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Y. Yamasaki
- Section of Implant and Rehabilitative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - R. Kuwatsuru
- Section of Implant and Rehabilitative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - Y. Tsukiyama
- Section of Implant and Rehabilitative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - K. Oki
- Section of Implant and Rehabilitative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
| | - K. Koyano
- Section of Implant and Rehabilitative Dentistry; Division of Oral Rehabilitation; Faculty of Dental Science; Kyushu University; Fukuoka Japan
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Maliti DV, Marsden CD, Main BJ, Govella NJ, Yamasaki Y, Collier TC, Kreppel K, Chiu JC, Lanzaro GC, Ferguson HM, Lee Y. Investigating associations between biting time in the malaria vector Anopheles arabiensis Patton and single nucleotide polymorphisms in circadian clock genes: support for sub-structure among An. arabiensis in the Kilombero valley of Tanzania. Parasit Vectors 2016; 9:109. [PMID: 26920563 PMCID: PMC4769569 DOI: 10.1186/s13071-016-1394-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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] [Received: 12/04/2015] [Accepted: 02/18/2016] [Indexed: 12/31/2022] Open
Abstract
Background There is growing evidence that the widespread use of Long-Lasting Insecticidal Nets (LLINs) is prompting malaria vectors to shift their biting towards times and places where people are not protected, such as earlier in the evening and/or outdoors. It is uncertain whether these behavioural shifts are due to phenotypic plasticity and/or ecological changes within vector communities that favour more exophilic species, or involve genetic factors within vector species to limit their contact with LLINs. Possibly variation in the time and location of mosquito biting has a genetic basis, but as yet this phenomenon has received little investigation. Here we used a candidate gene approach to investigate whether polymorphisms in selected circadian clock genes could explain variation in the time and location of feeding (indoors versus outside) within a natural population of the major African malaria vector Anopheles arabiensis. Methods Host-seeking An. arabiensis were collected from two villages (Lupiro and Sagamaganga) in Tanzania by Human Landing Catch (HLC) technique. Mosquitoes were classified into phenotypes of “early” (7 pm–10 pm) or “late” biting (4 am –7 am), and host-seeking indoors or outdoors. In these samples we genotyped 34 coding SNPs in 8 clock genes (PER, TIM, CLK, CYC, PDP1, VRI, CRY1, and CRY2), and tested for associations between these SNPs and biting phenotypes. SNPs in 8 mitochondrial genes (ATP6, ATP8, COX1, COX2, COX3, ND3, ND5 and CYTB) were also genotyped to test population subdivision within An. arabiensis. Results The candidate clock genes exhibited polymorphism within An. arabiensis, but it was unrelated to variation in the timing and location of their biting activity. However, there was evidence of strong genetic structure within An. arabiensis populations in association with the TIM, which was unrelated to geographic distance. Substructure within An. arabiensis was also detected using mitochondrial markers. Conclusions The variable timing and location of biting in An. arabiensis could not be linked to candidate clock genes that are known to influence behaviour in other Diptera. This finding does not rule out the possibility of a genetic basis to biting behaviour in this malaria vector, but suggests these are complex phenotypes that require more intensive ecological, neuronal and genomic analyses to understand. Electronic supplementary material The online version of this article (doi:10.1186/s13071-016-1394-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Deodatus Vincent Maliti
- Environmental Health and Ecological Sciences Thematic Group, Ifakara Health Institute, Ifakara, Morogoro, Tanzania. .,Nelson Mandela African Institute of Science and Technology Tanzania, School of Life Sciences, Arusha, Tanzania. .,Institute of Biodiversity Animal Health and Comparative Medicine, University of Glasgow, Glasgow, Lancashire, UK.
| | - C D Marsden
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
| | - B J Main
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
| | - N J Govella
- Environmental Health and Ecological Sciences Thematic Group, Ifakara Health Institute, Ifakara, Morogoro, Tanzania.
| | - Y Yamasaki
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
| | - T C Collier
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
| | - K Kreppel
- Institute of Biodiversity Animal Health and Comparative Medicine, University of Glasgow, Glasgow, Lancashire, UK.
| | - J C Chiu
- Department of Entomology and Nematology, University of California Davis, Davis, CA, USA.
| | - G C Lanzaro
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
| | - H M Ferguson
- Department of Entomology and Nematology, University of California Davis, Davis, CA, USA.
| | - Y Lee
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA.
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Yamasaki Y, Hasegawa K, Osawa T, Noda S. Rapid vapour deposition and in situ melt crystallization for 1 min fabrication of 10 μm-thick crystalline silicon films with a lateral grain size of over 100 μm. CrystEngComm 2016. [DOI: 10.1039/c6ce00122j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nii Y, Nakajima T, Kikkawa A, Yamasaki Y, Ohishi K, Suzuki J, Taguchi Y, Arima T, Tokura Y, Iwasa Y. Uniaxial stress control of skyrmion phase. Nat Commun 2015; 6:8539. [PMID: 26460119 PMCID: PMC4633814 DOI: 10.1038/ncomms9539] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [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] [Received: 05/01/2015] [Accepted: 08/31/2015] [Indexed: 11/09/2022] Open
Abstract
Magnetic skyrmions, swirling nanometric spin textures, have been attracting increasing attention by virtue of their potential applications for future memory technology and their emergent electromagnetism. Despite a variety of theoretical proposals oriented towards skyrmion-based electronics (that is, skyrmionics), few experiments have succeeded in creating, deleting and transferring skyrmions, and the manipulation methodologies have thus far remained limited to electric, magnetic and thermal stimuli. Here, we demonstrate a new approach for skyrmion phase control based on a mechanical stress. By continuously scanning uniaxial stress at low temperatures, we can create and annihilate a skyrmion crystal in a prototypical chiral magnet MnSi. The critical stress is merely several tens of MPa, which is easily accessible using the tip of a conventional cantilever. The present results offer a new guideline even for single skyrmion control that requires neither electric nor magnetic biases and consumes extremely little energy. Chiral magnets can support particle-like magnetization textures called skyrmions which form in lattices and can be manipulated for potential device applications. Here, the authors demonstrate the controlled creation and annihilation of a skyrmion lattice in MnSi single crystals using mechanical stress.
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Affiliation(s)
- Y Nii
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - T Nakajima
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - A Kikkawa
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Y Yamasaki
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.,Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - K Ohishi
- Research Center for Neutron Science and Technology, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - J Suzuki
- Research Center for Neutron Science and Technology, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
| | - Y Taguchi
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - T Arima
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.,Department of Advanced Materials Science, University of Tokyo, Kashiwa 277-8561, Japan
| | - Y Tokura
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.,Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
| | - Y Iwasa
- RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan.,Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
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Yabuuchi H, Matsuo Y, Abe K, Baba S, Sunami S, Kamitani T, Yonezawa M, Yamasaki Y, Kawanami S, Nagao M, Okamoto T, Nakamura K, Yamamoto H, Sasaki M, Honda H. Anterior mediastinal solid tumours in adults: characterisation using dynamic contrast-enhanced MRI, diffusion-weighted MRI, and FDG-PET/CT. Clin Radiol 2015; 70:1289-98. [PMID: 26272529 DOI: 10.1016/j.crad.2015.07.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 07/08/2015] [Accepted: 07/08/2015] [Indexed: 01/12/2023]
Abstract
AIM To find significant parameters to characterise anterior mediastinal solid tumours in adults using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), diffusion-weighted MRI (DWI), and combined 2-[(18)F]-fluoro-2-deoxy-d-glucose positron-emission tomography/computed tomography (FDG-PET/CT). MATERIALS AND METHODS Forty-eight histologically confirmed anterior mediastinal solid tumours in 48 patients (24 men, 24 women; age range 21-83 years, mean 50.7 years) were examined. The parameters analysed were maximal diameter, presence of capsule/septa on T2-weighted images, time-signal intensity curves (TICs), apparent diffusion coefficient (ADC), and maximum standardised uptake value (SUVmax). Also examined was whether any differences between histological types could be seen in these parameters. In a validation study, 42 anterior mediastinal solid tumours in 42 patients were examined consecutively. RESULTS The washout pattern on TIC was seen only in thymic epithelial tumours (20/32). SUVmax of lymphoma (mean, 17.9), malignant germ cell tumours (14.2), and thymic carcinomas (15.6) were significantly higher than that of thymomas (6.1). The mean maximal diameter of thymic epithelial tumours was significantly smaller than that of lymphomas (p<0.01) and malignant germ cell tumours (p<0.05). The validation study also yielded high accuracy (38/42, 91%) in differentiation among the anterior mediastinal solid tumours. CONCLUSION The SUVmax, TIC pattern on DCE-MRI, and maximal diameter might be useful to differentiate anterior mediastinal solid tumours in adults.
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Affiliation(s)
- H Yabuuchi
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Y Matsuo
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - K Abe
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - S Baba
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - S Sunami
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - T Kamitani
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - M Yonezawa
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Y Yamasaki
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - S Kawanami
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - M Nagao
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - T Okamoto
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - K Nakamura
- Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - H Yamamoto
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - M Sasaki
- Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - H Honda
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Ninomiya H, Katakami N, Osonoi T, Saitou M, Yamamoto Y, Takahara M, Kawamori D, Matsuoka TA, Yamasaki Y, Shimomura I. Association between new onset diabetic retinopathy and monocyte chemoattractant protein-1 (MCP-1) polymorphism in Japanese type 2 diabetes. Diabetes Res Clin Pract 2015; 108:e35-7. [PMID: 25913234 DOI: 10.1016/j.diabres.2015.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 02/21/2015] [Accepted: 04/03/2015] [Indexed: 10/23/2022]
Abstract
We longitudinally evaluated the association between monocyte chemoattractant protein-1 (MCP-1) A-2518G polymorphism and new onset of diabetic retinopathy in 758 type 2 diabetic patients. The new onset of retinopathy increased with the increase of the number of G alleles, even after adjustment for age, HbA1c levels, and duration of diabetes.
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Affiliation(s)
- Hiroyo Ninomiya
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Naoto Katakami
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan; Department of Metabolism and Atherosclerosis, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
| | | | | | - Yuichi Yamamoto
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Mitsuyoshi Takahara
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Dan Kawamori
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Taka-aki Matsuoka
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yoshimitsu Yamasaki
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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Yamasaki Y, Suzuki K, Akashi Y, Asari Y, Tsuchida K, Ooka S, Ozaki S, Yamada H. FRI0493 Improved Detection of Early Pulmonary Hypertension in Patients with Connective Tissue Diseases by Simple Exercise Doppler Echocardiography. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3294] [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: 11/04/2022]
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Katakami N, Osonoi T, Takahara M, Saitou M, Matsuoka TA, Yamasaki Y, Shimomura I. Clinical utility of brachial-ankle pulse wave velocity in the prediction of cardiovascular events in diabetic patients. Cardiovasc Diabetol 2014; 13:128. [PMID: 25186287 PMCID: PMC4172854 DOI: 10.1186/s12933-014-0128-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 08/20/2014] [Indexed: 11/11/2022] Open
Abstract
Background Brachial-ankle pulse wave velocity (baPWV) is a method to estimate arterial stiffness, which reflects the stiffness of both the aorta and peripheral artery; it would be applicable to general practice, since its measurementis automated. The aim of this study was to evaluate whether baPWV can be predictors of future cardiovascular events (CVE) in diabetic patients. Methods We prospectively evaluated the association between baPWV or carotid intima-media thickness (carotid IMT) at baseline and new onset of CVE in 1040 type 2 diabetic patients without CVE. The predictability of baPWV and/or carotid IMT for identifying patients at high risk for CVE was evaluated by time-dependent receiver-operating-characteristic (ROC) curve analysis. Results During a median follow-up of 7.5 years, 113 had new CVD events. The cumulative incidence rates of CVE were significantly higher in patients with high baPWV values (≥1550 cm/s) as compared to those with low baPWV values (<1550 cm/s) (p < 0.001, log-rank test). Similarly, the cumulative incidence rate of CVE was significantly higher in patients with higher maximum carotid IMT (maxIMT) values (≥1.0 mm) as compared to those with lower maxIMT values (<1.0 mm) (p < 0.001, log-rank test). Subjects with both “high PWV” and “high IMT” had a significantly higher risk of developing CVE as compared to those with either “high PWV” or “high IMT,” as well as those with neither. A multivariate Cox proportional hazards regression model revealed that both baPWV (HR = 1.30, [95%CI: 1.07-1.57]; p = 0.009) and maxIMT (HR = 1.20, [95%CI: 1.01-1.41]; p = 0.033) were independent predictors for CVE, even after adjustment for the conventional risk factors. Time-dependent ROC curve analyses revealed that the addition of maxIMT to the Framingham risk score resulted in significant increase in AUC (from 0.60 [95%CI: 0.54-0.67] to 0.63 [95%CI: 0.60-0.82]; p = 0.01). Notably, the addition of baPWV to the Framingham risk score and maxIMT resulted in further and significant (p = 0.02) increase in AUC (0.72 [95%CI: 0.67-0.78]). Conclusions Evaluation of baPWV, in addition to carotid IMT and conventional risk factors, improved the ability to identify the diabetic individuals with high risk for CVE. Electronic supplementary material The online version of this article (doi:10.1186/s12933-014-0128-5) contains supplementary material, which is available to authorized users.
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Yamasaki Y, Fukumoto I, Kumagai N, Ohta Y, Nakagawa T, Kawamukai M, Matsuda H. Continuous Chitosan Hydrolyzate Production by Immobilized Chitosanolytic Enzyme fromEnterobactersp. G-1. Biosci Biotechnol Biochem 2014; 56:1546-51. [PMID: 1369055 DOI: 10.1271/bbb.56.1546] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chitosanolytic enzymes from Enterobacter sp. G-1 were immobilized on various carriers to continuously hydrolyze chitosan. Four different carriers were tested: FE-3901 (strong basic anion exchange resin, ionic binding), glutaraldehyde-treated FE-4612 (weak basic anion exchange resin, cross-linking), Chitopearl (chitosan beads), and alginate calcium. Glutaraldehyde-treated FE-4612 and Chitopearl immobilized more protein than the others. The enzyme immobilized on FE-3901 had the greatest activity. The activity of enzyme immobilized on FE-3901 decreased rapidly when exposed to a continuous flow of 1% chitosan. The enzyme immobilized with Chitopearl retained more than 50% of its original activity after 17 days, and the activity was fully restored by re-immobilization.
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Affiliation(s)
- Y Yamasaki
- Applied Biological Sciences, Faculty of Agriculture, Shimane University, Matsue, Japan
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Tsuchida K, Yamada H, Yamasaki Y, Ooka S, Suzuki K, Akashi Y, Ozaki S. SAT0320 Coexistence of Left Heart Diseases is Common among Patients with Connective Tissue Diseases-Associated Pulmonary Arterial Hypertension. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4878] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Katakami N, Kaneto H, Matsuoka TA, Takahara M, Osonoi T, Saitou M, Kawai K, Ishibashi F, Kashiwagi A, Kawamori R, Shimomura I, Yamasaki Y. Accumulation of oxidative stress-related gene polymorphisms and the risk of coronary heart disease events in patients with type 2 diabetes--an 8-year prospective study. Atherosclerosis 2014; 235:408-14. [PMID: 24933031 DOI: 10.1016/j.atherosclerosis.2014.05.936] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 05/19/2014] [Accepted: 05/21/2014] [Indexed: 01/22/2023]
Abstract
OBJECTIVE Oxidative stress, which is provoked in patients with diabetes, plays critical roles in the pathogenesis of coronary heart disease (CHD). We simultaneously determined 5 relatively common genetic variants related to oxidative stress and evaluated the combined effect on CHD. METHODS We enrolled 1977 Japanese type 2 diabetic subjects without history of CVD (males 66.1%, 59.5 ± 10.0 years old), determined their genotypes regarding glutamate-cysteine ligase modifier subunit (GCLM) C-588T, manganese superoxide dismutase (SOD2) Val16Ala, endothelial nitric oxide synthase (NOS3) G894T, NAD(P)H oxidase p22phox (CYBA) C242T, and myeloperoxidase (MPO) G-463A polymorphisms, and prospectively evaluated the association between these polymorphisms and CHD events. RESULTS The median follow-up period was 7.5 years and there were 85 new CHD events. The single association analysis revealed that there were no statistically significant associations between each polymorphism and the prevalence of CHD. Interestingly, the risk of CHD event was higher with the increase of the total number of 10 concomitant unfavorable "pro-oxidant alleles" in each subject (p for trend = 0.018, log-rank test). Especially, the carriers of ≥8 pro-oxidant alleles had a significantly increased risk as compared to the carriers of <8 pro-oxidant alleles, whether the other clinical variables were adjusted (HR 2.92 with 95%CI 1.50-5.67, p = 0.002) or not (HR 2.89 with 95%CI 1.49-5.59, p = 0.002).. CONCLUSIONS Accumulation of gene polymorphisms related to oxidative stress is likely associated with the development of CHD in patients with type 2 diabetes, suggesting that the combined information about these variants is useful to assess the risk of CHD.
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Affiliation(s)
- Naoto Katakami
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Japan; Department of Metabolism and Atherosclerosis, Osaka University Graduate School of Medicine, Japan.
| | - Hideaki Kaneto
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Japan
| | - Taka-Aki Matsuoka
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Japan
| | - Mitsuyoshi Takahara
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Japan
| | | | | | | | | | | | - Ryuzo Kawamori
- Sportology Center, Juntendo University School of Medicine, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Japan
| | - Yoshimitsu Yamasaki
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Japan
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Yamasaki Y, Suzuki K, Akashi Y, Tsuchida K, Ozaki S, Yamada H. FRI0510 Good Detection of Early Pulmonary Hypertension Using Exercise Doppler Echocardiography in Patients with Connective Tissue Diseases and Its Comparison with Other Screening Tool. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1601] [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: 11/04/2022]
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Yano Y, Yabuuchi H, Kairada A, Tanaka N, Morishita J, Akasaka T, Matsuo Y, Kamitani T, Yamasaki Y, Nagao M, Sasaki M. Detectability of simulated interstitial pneumonia on chest radiographs: comparison between irradiation side sampling indirect flat-panel detector and computed radiography. Br J Radiol 2014; 87:20140075. [PMID: 24874767 DOI: 10.1259/bjr.20140075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To compare the detectability of simulated interstitial pneumonia on chest radiographs between an irradiation side sampling indirect flat-panel detector (ISS-FPD) and computed radiography (CR). METHODS Simulated interstitial pneumonia findings (ground-glass opacity, reticular opacity and honeycomb lung) were superimposed on an anthropomorphic chest phantom. Chest radiographs were acquired under three exposure levels (4.0, 3.2 and 2.0 mAs) with an ISS-FPD and with CR. 5 thoracic radiologists evaluated 72 images for the presence or absence of a lesion over each of 6 areas. A total of 1296 observations were analysed in a receiver-operating characteristic analysis. A jackknife method was used for the statistical analysis. RESULTS The areas under the curves (AUCs) for the detection of simulated honeycomb lung obtained with the ISS-FPD were significantly larger than those obtained with CR at all exposure conditions. For the detection of simulated ground-glass opacity and reticular opacity, there were no significant differences between the two systems. In addition, the AUCs for the detectability of simulated honeycomb lung obtained with the ISS-FPD at all exposure levels were significantly larger than those obtained with CR at 4 mAs. CONCLUSION The ISS-FPD was superior to CR for the detection of simulated honeycomb lung. Provided that the chosen model is representative of interstitial pneumonia, the use of an ISS-FPD might reduce a patient's exposure dose during the detection of interstitial pneumonia. ADVANCES IN KNOWLEDGE The ISS-FPD has shown its advantage compared with CR in the detection of honeycombing, one sign of interstitial pneumonia.
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Affiliation(s)
- Y Yano
- 1 Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Yoshii H, Onuma T, Yamazaki T, Watada H, Matsuhisa M, Matsumoto M, Kitagawa K, Kitakaze M, Yamasaki Y, Kawamori R. Effects of pioglitazone on macrovascular events in patients with type 2 diabetes mellitus at high risk of stroke: the PROFIT-J study. J Atheroscler Thromb 2014; 21:563-573. [PMID: 24477028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
AIM The present study evaluated the effects of pioglitazone treatment on the incidence of primary cardiovascular events in Japanese subjects with type 2 diabetes mellitus at high risk of stroke. METHODS A prospective, multicenter, randomized, open label, comparative study was conducted among diabetic patients recruited from 50 medical institutions nationwide. A total of 522 patients with hypertension and/or dyslipidemia who had one or more silent cerebral infarcts, advanced carotid atherosclerosis or microalbuminuria at baseline were randomly treated with (n=254) or without pioglitazone (n=268) and observed for a medium of 672 days. The hypertension and dyslipidemia were concurrently treated according to the respective treatment guidelines. The primary outcome was the time to the first occurrence of a composite of all-cause death, nonfatal cerebral infarction and nonfatal myocardial infarction. RESULTS Treatment with pioglitazone resulted in significant reductions in the levels of HbA1c, diastolic blood pressure and LDL-cholesterol and a significant increase in the levels of HDL-cholesterol. The pioglitazone non-users exhibited a significant reduction in the LDL-cholesterol levels alone. Primary events were registered during the study period in nine patients in the pioglitazone group and 10 patients in the non-pioglitazone group. The difference in the cumulative incidence of the primary outcome was not significant between the two groups(1.8% per year). CONCLUSIONS Pioglitazone therapy produces immediate and effective improvements in glycemic control, diastolic blood pressure and lipid profiles. While this study was too underpowered to determine the effects of pioglitazone on the incidence of cardiovascular events, the results indicated that two years of pioglitazone treatment did not produce any statistically significant reductions in the rate of primary cardiovascular events.
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Affiliation(s)
- Hidenori Yoshii
- Department of Medicine, Diabetology and Endocrinology, Juntendo Tokyo Koto Geriatric Medical Center, Juntendo University School of Medicine
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Makino H, Yoshinaga Y, Yamasaki Y, Morita Y, Hashimoto H, Yamamura M. Renal involvement in rheumatoid arthritis: analysis of renal biopsy specimens from 100 patients. Mod Rheumatol 2014; 12:148-54. [PMID: 24383903 DOI: 10.3109/s101650200025] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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
Abstract We analyzed renal biopsy specimens from 100 patients to evaluate the characteristics of renal involvement in patients with rheumatoid arthritis (RA). Membranous nephropathy (MN) was the most common renal histological pattern (31%). Mesangial proliferative glomerulonephritis (GN) was found in 21% of cases (IgA nephropathy 12%, non-IgA GN 9%), minor changes in 17%, renal amyloidosis in 11%, interstitial nephritis in 9%, sclerotic GN in 4%, and crescentic GN in 2%. MN was relatively more frequent in men than in women, and most developed nephrotic syndrome, while a few developed renal failure. Disease-modifying antirheumatic drugs (DMARDs) correlated with MN in 26 of 31 cases. Mesangial proliferative GN showed high-grade hematuria. Amyloidosis correlated with long duration of RA; approximately half of the cases with amyloidosis also had nephrotic syndrome, and 82% developed renal failure. Of the 100 patients, 82% showed some tubulo-interstitial changes, which might be related to non-steroidal anti-inflammatory drugs. Because renal lesions in RA are very diverse, and early stage cases of MN and amyloidosis can be detected only by histological examinations, renal biopsy should be performed in cases with continuous urinary abnormalities or progressive renal failure.
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Affiliation(s)
- H Makino
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine and Dentistry , 2-5-1 Shikata-cho, Okayama 700-8558 , Japan
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Yoshii H, Onuma T, Yamazaki T, Watada H, Matsuhisa M, Matsumoto M, Kitagawa K, Kitakaze M, Yamasaki Y, Kawamori R. Effects of Pioglitazone on Macrovascular Events in Patients with Type 2 Diabetes Mellitus at High Risk of Stroke: The PROFIT-J Study. J Atheroscler Thromb 2014. [DOI: 10.5551/jat.21626] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Nagai Y, Kohriyama T, Origasa H, Minematsu K, Yokota C, Uchiyama S, Ibayashi S, Terayama Y, Takagi M, Kitagawa K, Nomura E, Hosomi N, Ohtsuki T, Yamawaki T, Matsubara Y, Nakamura M, Yamasaki Y, Mori E, Fukushima M, Kobayashi S, Shinohara Y, Yamaguchi T, Matsumoto M. Rationale, design, and baseline features of a randomized controlled trial to assess the effects of statin for the secondary prevention of stroke: the Japan Statin Treatment Against Recurrent Stroke (J-STARS). Int J Stroke 2013; 9:232-9. [PMID: 24015915 PMCID: PMC4283729 DOI: 10.1111/ijs.12099] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [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] [Indexed: 11/28/2022]
Abstract
BACKGROUND Although statin therapy is beneficial for preventing first strokes, the benefit for recurrent stroke and its sub-types remains unknown in Asian populations. The aim of this study is to examine the role of pravastatin in the secondary prevention of stroke in Japanese patients. METHODS This is a multicenter, randomized, open-label, parallel group study of patients with noncardioembolic ischemic stroke (atherothrombotic infarction, lacunar infarction, and infarction of undetermined etiology). All patients were diagnosed with hyperlipidemia and with a total cholesterol level between 180 and 240 mg/dl at enrollment. Patients in the treatment group receive 10 mg/day of pravastatin, and those in the control group receive no statin treatment. The primary end-point is the recurrence of stroke, including transient ischemic attack. The secondary end-points include the onset of respective stroke sub-types and functional outcomes related to stroke. The patients were enrolled for five-years and will be followed up for five-years. RESULTS A total of 1578 eligible patients (age: 66·2 years, men: 68·8%), including 64·2% with lacunar infarction, 25·4% with atherothrombotic infarction, and 10·4% with infarction of undetermined etiology were included in this study. Lipid levels were generally well controlled (total cholesterol: 210·0 mg/dl, low density lipoprotein cholesterol: 129·5 mg/dl) at baseline. In addition, the disability of patients was relatively mild, and cognitive function was preserved in the majority of patients. CONCLUSION This article reports the rationale, design, and baseline features of a randomized controlled trial to assess the effects of statin for the secondary prevention of stroke. Follow-ups of patients are in progress and will end in 2014.
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Affiliation(s)
- Yoji Nagai
- Foundation for Biomedical Research and Innovation Translational Research Informatics Center, Kobe, Japan
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Takahashi Y, Yamasaki Y, Tokura Y. Terahertz magnetoelectric resonance enhanced by mutual coupling of electromagnons. Phys Rev Lett 2013; 111:037204. [PMID: 23909357 DOI: 10.1103/physrevlett.111.037204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Indexed: 06/02/2023]
Abstract
Both electric- and magnetic-dipole active spin excitations, i.e., electromagnons, which mediate the dynamical magnetoelectric effect, have been investigated for a multiferroic perovskite of manganite by optical spectroscopy at terahertz frequencies. Upon the magnetoelectric resonance at 1 meV in the multiferroic phase with the bc-plane spin cycloidal order, a gigantic dynamical magnetoelectric effect has been observed as a nonreciprocal directional dichroism or birefringence. The light k-vector-dependent difference (Δκ=κ(+)-κ(-)) of the extinction coefficient (κ(±)) is as large as Δκ~1 or 2Δκ/(κ(+)+κ(-))~0.7 at the lowest-lying electromagnon energy. We clarified the mutual coupling of the E(ω)[parallel]a-polarized electromagnons of the different origins, leading to the enhancement of the magnetoelectric resonance.
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Affiliation(s)
- Y Takahashi
- Department of Applied Physics and Quantum Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan
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Fujioka J, Yamasaki Y, Nakao H, Kumai R, Murakami Y, Nakamura M, Kawasaki M, Tokura Y. Spin-orbital superstructure in strained ferrimagnetic perovskite cobalt oxide. Phys Rev Lett 2013; 111:027206. [PMID: 23889438 DOI: 10.1103/physrevlett.111.027206] [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] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Indexed: 06/02/2023]
Abstract
We have investigated the Co-3d spin-orbital state in a thin film of perovskite LaCoO3 to clarify the origin of strain induced spontaneous magnetization (T(C)=94 K) by means of x-ray diffraction, optical spectroscopy, and magnetization measurements. A lattice distortion with the propagation vector (1/4 -1/4 1/4) and an anomalous activation of optical phonons coupled to Co-3d orbital are observed below 126 K. Combined with the azimuthal angle analysis of superlattice reflection, we propose that the ordering of Co-3d orbital promoted by an epitaxial strain produces a unique ferrimagnetic structure.
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Affiliation(s)
- J Fujioka
- Department of Applied Physics and Quantum-Phase Electronics Center, University of Tokyo, Hongo, Tokyo 113-8656, Japan
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Tsuchida K, Yamada H, Yamasaki Y, Suzuki K, Akashi Y, Ozaki S. SAT0192 High Frequency of Left-Sided Heart Diseases as an Important Cause of Pulmonary Hypertension in Connective Tissue Diseases. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1918] [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: 11/04/2022]
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Takakuwa Y, Yamada H, Ito H, Ooka S, Yamasaki Y, Nakano H, Hiida M, Kurihara Y, Ozaki S. THU0410 Characterisation of interstitial lung disease associated with adult still’s disease. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2375] [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: 11/04/2022]
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Yamasaki Y, Yamada H, Suzuki K, Akashi Y, Tsuchida K, Ozaki S. FRI0268 Detection of borderline pulmonary hypertension using exercise doppler echocardiography in patients with connective tissue diseases. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2725] [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: 11/04/2022]
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Yamasaki Y, Yamada H, Suzuki K, Tsuchida K, Akashi Y, Ozaki S. OP0037 Derivation and Validation of a Formula for Screening and Identification of Early Pulmonary Hypertension Using Exercise Doppler Echocardiography in Patients with Connective Tissue Diseases. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.242] [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: 11/03/2022]
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Maeda A, Yamada H, Yamasaki Y, Shibata T, Nagafuchi H, Kurihara Y, Ozaki S. THU0200 Clinical and radiological characteristics of interstitial lung disease in japanese patients with microscopic polyangiitis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2165] [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: 11/03/2022]
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Hill AJ, Mercier MS, Hill TDM, Glyn SE, Jones NA, Yamasaki Y, Futamura T, Duncan M, Stott CG, Stephens GJ, Williams CM, Whalley BJ. Cannabidivarin is anticonvulsant in mouse and rat. Br J Pharmacol 2013; 167:1629-42. [PMID: 22970845 DOI: 10.1111/j.1476-5381.2012.02207.x] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 08/17/2012] [Accepted: 08/28/2012] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND AND PURPOSE Phytocannabinoids in Cannabis sativa have diverse pharmacological targets extending beyond cannabinoid receptors and several exert notable anticonvulsant effects. For the first time, we investigated the anticonvulsant profile of the phytocannabinoid cannabidivarin (CBDV) in vitro and in in vivo seizure models. EXPERIMENTAL APPROACH The effect of CBDV (1-100 μM) on epileptiform local field potentials (LFPs) induced in rat hippocampal brain slices by 4-aminopyridine (4-AP) application or Mg(2+) -free conditions was assessed by in vitro multi-electrode array recordings. Additionally, the anticonvulsant profile of CBDV (50-200 mg·kg(-1) ) in vivo was investigated in four rodent seizure models: maximal electroshock (mES) and audiogenic seizures in mice, and pentylenetetrazole (PTZ) and pilocarpine-induced seizures in rats. The effects of CBDV in combination with commonly used antiepileptic drugs on rat seizures were investigated. Finally, the motor side effect profile of CBDV was investigated using static beam and grip strength assays. KEY RESULTS CBDV significantly attenuated status epilepticus-like epileptiform LFPs induced by 4-AP and Mg(2+) -free conditions. CBDV had significant anticonvulsant effects on the mES (≥100 mg·kg(-1) ), audiogenic (≥50 mg·kg(-1) ) and PTZ-induced seizures (≥100 mg·kg(-1) ). CBDV (200 mg·kg(-1) ) alone had no effect against pilocarpine-induced seizures, but significantly attenuated these seizures when administered with valproate or phenobarbital at this dose. CBDV had no effect on motor function. CONCLUSIONS AND IMPLICATIONS These results indicate that CBDV is an effective anticonvulsant in a broad range of seizure models. Also it did not significantly affect normal motor function and, therefore, merits further investigation as a novel anti-epileptic in chronic epilepsy models. LINKED ARTICLES This article is part of a themed section on Cannabinoids. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2012.167.issue-8.
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Affiliation(s)
- A J Hill
- Reading School of Pharmacy, University of Reading, Whiteknights, Reading, UK.
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Nakajima K, Takeishi Y, Matsuo S, Yamasaki Y, Nishimura T. Metabolic syndrome is not a predictor for cardiovascular events in Japanese patients with diabetes mellitus asymptomatic for coronary artery disease: a retrospective analysis of the J-ACCESS-2 study. J Nucl Cardiol 2013; 20:234-41. [PMID: 23196975 DOI: 10.1007/s12350-012-9656-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 11/01/2012] [Indexed: 01/17/2023]
Abstract
PURPOSE Patients with metabolic syndrome (MetS) have potentially higher risk for cardiovascular events. The aim of this study was to evaluate the effect of MetS on cardiac events in type-2 diabetic patients asymptomatic for coronary artery disease (CAD) in a Japanese population. METHODS A total of 485 patients from a J-ACCESS-2 investigation with stress-gated myocardial perfusion imaging (MPI) and quantitative-gated MPI analysis were examined. Cardiovascular hard events (cardiac death and acute coronary syndrome) and total events during a 3-year follow-up were analyzed. RESULTS The MetS group (n = 229) had higher incidence of hypertension, dyslipidemia, and ventricular dilatation than the non-MetS group (n = 256). The hard events were 8 and 12 for the MetS and non-MetS groups (P = n.s.), and total events were 31 and 31 for each of these groups, respectively (P = n.s.). Significant variables related to total cardiovascular events included age, current smoking, insulin use, total cholesterol, ejection fraction, summed stress score ≥ 9, and summed difference score ≥ 2. Cox proportional hazard analysis and Kaplan-Meier survival analysis showed that only the summed stress score was related to total events (P = .01), and the presence and the number of items for MetS criteria were not. CONCLUSION In patients with type 2 diabetes asymptomatic for CAD, cardiovascular events and ischemia are as common in diabetic patients without MetS as in those with MetS. A high MPI defect score is related to total events including cardiac and cerebrovascular events.
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Affiliation(s)
- Kenichi Nakajima
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
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Yamasaki Y. [Atherosclerosis: progress in diagnosis and treatments. Topics: III. Progress in diagnosis of atherosclerosis; 2. Progress in measurement of carotid intima-media thickness]. ACTA ACUST UNITED AC 2013; 102:318-24. [PMID: 23767312 DOI: 10.2169/naika.102.318] [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: 11/06/2022]
Affiliation(s)
- Yoshimitsu Yamasaki
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Japan
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Naka T, Kaneto H, Katakami N, Matsuoka TA, Harada A, Yamasaki Y, Matsuhisa M, Shimomura I. Association of serum copper levels and glycemic control in patients with type 2 diabetes. Endocr J 2013. [PMID: 23197044 DOI: 10.1507/endocrj.ej12-0342] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
It has been suggested that copper ion is involved in the pathogenesis of various diseases. The aim of this study is to examine the association of serum copper levels and glycemic control in patients with type 2 diabetes. We recruited a total of 132 patients with type 2 diabetes, and measured their serum copper levels by atomic absorption spectrometry. Serum copper levels were positively correlated with HbA1c levels (r=0.176, p=0 .044). In addition, after 3-month glycemic control, we evaluated whether the improvement of glycemic control influenced serum copper levels. As hemoglobin A1c (HbA1c) levels were decreased (from 8.7% to 6.8%, p<0.001), copper levels tended to be decreased (from 105.7 μg/dL to 101.8 μg/dL, p=0.069). In conclusion, it is likely that serum copper levels are associated with glycemic control in patients with type 2 diabetes.
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Affiliation(s)
- Toyoko Naka
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
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Katakami N, Kume S, Kaneto H, Uzu T, Kashiwagi A, Yamasaki Y, Maegawa H, Shimomura I. Association of myeloperoxidase G-463A gene polymorphism with diabetic nephropathy in Japanese type 2 diabetic subjects. Endocr J 2013; 60:457-71. [PMID: 23268804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/17/2023] Open
Abstract
It is possible that myeloperoxidase (MPO) contributes to the pathogenesis of diabetic nephropathy through the production of reactive oxygen species and HOCl/OCl⁻. In this study, we examined the relationship between renal damage and MPO G-463A gene polymorphism that is associated with its transcription activity in diabetic patients. We evaluated the association between MPO G-463A polymorphism and the prevalence of proteinuria and estimated GFR (eGFR) in 1448 Japanese type 2 diabetic subjects. The prevalence of macroalbuminuria was higher as the number of G alleles increased (GG (7.6%), GA (3.8%), AA (0.0%), p for trend=0.0269). The number of G alleles was significantly associated with macroalbuminuria (odds ratio 2.12, 95%CI 1.06-4.24, p=0.0344) even after adjustment for conventional risk factors. Inversely, eGFR was lower as the number of G alleles increased (GG (76.7±20.7 mL/min/1.73m²), GA (81.0±22.8 mL/min/1.73m²), AA (92.0±23.1 mL/min/1.73m²), p for trend=0.0025) and the number of G allele was an independent risk factor for a low eGFR (β=-0.072, p=0.003). We also examined the association between MPO expression and several stages of renal damage in a high-fat diet-induced diabetic mouse model. The proteinuria-induced increase in MPO expression was markedly enhanced in diabetic mice, and MPO expression was significantly correlated with the severity of kidney damage. In conclusion, it is likely that the G allele of the MPO G-476T polymorphism is a susceptibility allele for renal injury in type 2 diabetic patients.
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Affiliation(s)
- Naoto Katakami
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita 565-0871, Japan.
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Yamasaki Y, Katakami N, Kaneto H, Nakajima K, Kusuoka H, Kashiwagi A, Nishimura T. Improved lipid profiles are associated with reduced incidence of coronary vascular events in asymptomatic patients with type 2 diabetes and impaired myocardial perfusion. J Atheroscler Thromb 2012; 20:330-5. [PMID: 23258080 DOI: 10.5551/jat.13474] [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: 11/11/2022] Open
Abstract
AIM Individuals with type 2 diabetes are at high risk for cardiovascular events; however, a modality that could reduce risk has not been fully evaluated. We examined the annual incidence rate of cardiovascular events in asymptomatic Japanese diabetic patients who underwent gated myocardial perfusion single-photon computed tomography (SPECT). METHODS Asymptomatic patients (n= 485) aged ≥50 years and with either a maximal carotid artery intima-media thickness of ≥1.1 mm, or urinary albumin ≥30 mg/g creatinine, or at least two of abdominal obesity, low HDL cholesterol, high triglyceride levels and hypertension were evaluated at 50 institutions using gated SPECT with the stress-rest protocol and were followed up for three years. In the patients with summed stress scores (SSS) of ≥9, the initial high cardiovascular incidence rate in the first year declined significantly (p<0.001) from 21% to 2% during the second and third year. RESULTS The incident rate was consistent among diabetics with low SSS during follow-up. Baseline LDL and non-HDL cholesterol levels significantly reduced (123±6.4 to 99±6.1 mg/dL; p<0.05) during the first year in diabetic patients with high SSS, but did not significantly change in diabetic patients with low (<9) SSS. CONCLUSION The immediate improvement of lipid levels within one year correlated with the significant reduction in CVD events arising in diabetic patients with moderate or severe myocardial ischemia. Thus, rapidly lowering hyperlipidemia is very effective for patients with type 2 diabetes at high risk for cardiac events.
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Katakami N, Takahara M, Kaneto H, Sakamoto K, Yoshiuchi K, Irie Y, Kubo F, Katsura T, Yamasaki Y, Kosugi K, Shimomura I. Ultrasonic tissue characterization of carotid plaque improves the prediction of cardiovascular events in diabetic patients: a pilot study. Diabetes Care 2012; 35:2640-6. [PMID: 23043165 PMCID: PMC3507570 DOI: 10.2337/dc12-0331] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The aim of this study is to evaluate whether noninvasive ultrasonic tissue characterization of carotid plaque using integrated backscatter (IBS) analysis can be a predictor of future cardiovascular events (CVE) in asymptomatic type 2 diabetic patients. RESEARCH DESIGN AND METHODS We prospectively evaluated the association between Calibrated-IBS value, an ultrasonic marker for tissue characteristics of carotid plaque, and CVE in 85 asymptomatic type 2 diabetic patients with carotid plaque. RESULTS The median follow-up period was 7.9 years, and there were 20 new CVE. The risk of CVE was significantly higher in the subjects with low Calibrated-IBS values (<-17.1 dB; n = 42) as compared with those with high values (≥-17.1 dB; n = 43) (P = 0.004, log-rank test). Cox proportional hazards regression analysis revealed that both Calibrated-IBS value (hazard ratio [HR] 0.802 [95% CI 0.710-0.906]; P < 0.0001) and plaque thickness (1.938 [1.170-3.213]; P = 0.010) were independently associated with CVE, even after adjustment for the 10-year risk for a general cardiovascular disease estimated by Framingham risk scoring (FRS). Time-dependent receiver operating characteristic curve analysis for CVE at 10 years after the baseline examinations revealed that area under the curve for Calibrated-IBS was 0.76 (0.60-0.90) and substantially higher than those for plaque thickness (0.60 [0.45-0.79]) and FRS (0.60 [0.40-0.78]). These analyses also revealed that the addition of both plaque thickness and Calibrated-IBS value to conventional risk factors significantly improved the event prediction. CONCLUSIONS Calibrated-IBS value could improve the risk prediction of CVE in asymptomatic type 2 diabetic patients with carotid plaque.
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Affiliation(s)
- Naoto Katakami
- Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Suita, Japan.
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Yamasaki Y, Nomura R, Nakano K, Naka S, Matsumoto-Nakano M, Asai F, Ooshima T. Distribution of periodontopathic bacterial species in dogs and their owners. Arch Oral Biol 2012; 57:1183-8. [PMID: 22417880 DOI: 10.1016/j.archoralbio.2012.02.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 02/06/2012] [Accepted: 02/13/2012] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Presently, a large number of individuals consider their companion animals as family members and have close contact with them in daily life. The purpose of the present study was to analyze the distribution of periodontopathic bacterial species in oral specimens taken from dogs and their owners. DESIGN Dental plaque specimens were collected from 66 dogs and 81 members of 64 families who came to an animal clinic or dog training school in Okayama, Japan, in 2011. Bacterial DNA was extracted from each specimen and PCR analyses using primers specific for 11 periodontopathic species, Porphyromonas gingivalis, Porphyromonas gulae, Treponema denticola, Tannerella forsythia, Capnocytophaga ochracea, Capnocytophaga sputigena, Prevotella intermedia, Prevotella nigrescens, Aggregatibacter actinomycetemcomitans, Campylobacter rectus, and Eikenella corrodens were performed. RESULTS P. gulae (71.2%), T. forsythia (77.3%), and C. rectus (66.7%) were frequently found in the dogs, whereas the detection rates of those species in humans were less frequent at 16.0%, 30.9%, and 21.0%, respectively. P. gulae was identified in 13 human subjects and each of their dogs was also positive for the species. Furthermore, E. corrodens and T. denticola in specimens obtained from dogs were correlated with their presence in specimens from owners who had close contact with them. CONCLUSIONS These results suggest that several periodontopathic species could be transmitted between humans and their companion dogs, though the distribution of periodontopathic species in both is generally different.
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Affiliation(s)
- Y Yamasaki
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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