文献一覧: Makoto SUGIHARA (著者)

3 0 0 0 OA Association Between Telomere G-Tail Length and Coronary Artery Disease or Statin Treatment in Patients With Cardiovascular Risks ― A Cross-Sectional Study ―

著者: Daisuke Nose Yuhei Shiga Ryou-u Takahashi Yuki Yamamoto Yasunori Suematsu Takashi Kuwano Makoto Sugihara Miyuki Kanda Hidetoshi Tahara Shin-ichiro Miura
出版者: The Japanese Circulation Society
雑誌: Circulation Reports (ISSN:24340790)
巻号頁・発行日: pp.CR-23-0038, (Released:2023-07-11)
参考文献数: 52
被引用文献数: 2

Background: The utility of telomere G-tail length to predict coronary artery disease (CAD) remains controversial. CAD results from coronary artery narrowing due to cholesterol and lipid accumulation, augmented by inflammatory cells and other factors. This study explored the significance of telomere G-tail length in suspected CAD patients.Methods and Results: In all, 95 patients with suspected CAD or ≥1 cardiac risk factor underwent coronary computed tomography angiography (CCTA). We measured leukocyte telomere length and G-tail length using a hybrid protection method, and diagnosed the presence of CAD using CCTA. Associations between G-tail length and the presence of CAD, the number of stenosed coronary arteries, and brachial-ankle pulse wave velocity (baPWV) were analyzed. No significant difference was observed in G-tail length when comparing groups with or without CAD or statin treatment. However, in the non-statin group, G-tail length was significantly shorter in patients with 3-vessel disease compared with 1-vessel disease. Dividing the group using a baPWV of 1,300 cm/s, telomere G-tail length was significantly shorter in the high-risk (baPWV ≥1,300 cm/s) group.Conclusions: The clinical utility of telomere G-tail length as a CAD risk indicator seems limited. There was a trend for longer telomere G‐tail length in the statin‐treated group. Moreover, telomere G-tail length was reduced in patients at high-risk of cardiovascular events, aligning with the trend of a shortening in telomere G-tail length with CAD severity.

2023-08-12 05:50:55
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2 0 0 0 OA Association Between Major Adverse Cardiovascular Events and the Ratio of Subcutaneous Fat Area to Visceral Fat Area in Patients Who Have Undergone Multidetector Row Computed Tomography

著者: Yuuka Shibata Yuhei Shiga Yasunori Suematsu Kohei Tashiro Yuto Kawahira Kai Morita Takashi Kuwano Makoto Sugihara Shin-ichiro Miura
出版者: The Japanese Circulation Society
雑誌: Circulation Reports (ISSN:24340790)
巻号頁・発行日: vol.3, no.11, pp.674-681, 2021-11-10 (Released:2021-11-10)
参考文献数: 39
被引用文献数: 5

Background:Obesity is a critical cardiovascular risk factor that has been defined in terms of body mass index (BMI), abdominal circumference (AC), and fat area. In this study, we examined which markers of obesity are most closely associated with major adverse cardiovascular events (MACE).Methods and Results:This prospective cohort study enrolled 529 consecutive patients who initially underwent coronary computed tomography angiography for screening of coronary atherosclerosis at Fukuoka University Hospital (FU-CCTA Registry) and either were clinically suspected of having coronary artery disease (CAD) or had at least 1 cardiovascular risk factor with a follow-up of up to 5 years. Measurements of subcutaneous fat area (SFA), visceral fat area (VFA), and AC were quantified using multidetector row computed tomography. The primary endpoint was MACE. SFA and the SFA to VFA ratio (SFA/VFA) were significantly lower in the MACE than non-MACE group. SFA, AC, BMI, and SFA/VFA were each independently associated with MACE. Receiver operating characteristic curve analysis revealed a greater area under the curve for SFA/VFA than for the other parameters. The cut-off level of SFA/VFA with the greatest sensitivity and specificity for the diagnosis of MACE was 1.45 (sensitivity 0.849, specificity 0.472).Conclusions:Our results suggest that SFA/VFA may be a marker for evaluating the presence of MACE.

2021-11-25 13:03:53
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2 0 0 0 OA Efficacy of Super Slow Inflation as Lesion Preparation for Drug-Coated Balloons in Femoropopliteal Lesions

著者: Makoto Sugihara Kaori Mine Makito Futami Yuta Kato Tadaaki Arimura Masaya Yano Yosuke Takamiya Takashi Kuwano Shin-ichiro Miura
出版者: The Japanese Circulation Society
雑誌: Circulation Reports (ISSN:24340790)
巻号頁・発行日: vol.2, no.11, pp.682-690, 2020-11-10 (Released:2020-11-10)
参考文献数: 21
被引用文献数: 4

Background:Drug-coated balloon strategies in endovascular therapy often result in severe dissection, so lesion preparation must be improved. We evaluated the efficacy of a gradual inflation method, termed “super slow inflation” (SSI), in preparing lesions to avoid severe dissections.Methods and Results:The association between balloon pressure and the dilatation of a model constricted vessel, as well as the load applied to the balloon surface, were determined using a burst leak detector for a quick inflation (QI; 1 atm/s) protocol and SSI (1 atm/20 s). A retrospective, single-center, non-randomized study evaluated differences in vessel dissection patterns after balloon angioplasty depending on inflation method in 81 consecutive patients (mean [±SD] age 74.6±9.2 years; 54 males) who underwent balloon angioplasty for de novo femoropopliteal lesions between January 2017 and March 2019. In the constricted vessel model, vessel dilatation increased gradually using SSI, with the maximum dilatation load being approximately 100 g lower for the SSI than QI protocol. In patients, the rate of severe vessel dissection was significantly lower in the SSI than non-SSI group (17.6% vs. 55.2%, respectively; P<0.001). Multivariate regression analysis revealed that SSI was an independent factor preventing severe dissection (odds ratio 0.18; 95% confidence interval 0.06–0.53; P=0.002).Conclusions:SSI is a gentle and effective method for the preparation of femoropopliteal lesions to reduce the incidence of severe angiographic dissection when using drug-coated balloons.

2020-11-14 08:28:08
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1 0 0 0 OA Efficacy of Super Slow Inflation as Lesion Preparation for Drug-Coated Balloons in Femoropopliteal Lesions

著者: Makoto Sugihara Kaori Mine Makito Futami Yuta Kato Tadaaki Arimura Masaya Yano Yosuke Takamiya Takashi Kuwano Shin-ichiro Miura
出版者: The Japanese Circulation Society
雑誌: Circulation Reports (ISSN:24340790)
巻号頁・発行日: pp.CR-20-0095, (Released:2020-10-16)
参考文献数: 21
被引用文献数: 4

2021-05-27 19:53:29
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1 0 0 0 On Synthesizing a Reliable Multiprocessor for Embedded Systems

著者: Makoto SUGIHARA
出版者: The Institute of Electronics, Information and Communication Engineers
雑誌: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (ISSN:09168508)
巻号頁・発行日: vol.E93-A, no.12, pp.2560-2569, 2010-12-01
被引用文献数: 2

Utilizing a heterogeneous multiprocessor system has become a popular design paradigm to build an embedded system at a cheap cost. A reliability issue, which is vulnerability to soft errors, has not been taken into account in the conventional IC (integrated circuit) design flow, while chip area, performance, and power consumption have been done. This paper presents a system design paradigm in which a heterogeneous multiprocessor system is synthesized and its chip area is minimized under real-time and reliability constraints. First we define an SEU vulnerability factor as a vulnerability measure for computer systems so that we evaluate task-wise reliability over various processor structures. Next we build a mixed integer linear programming (MILP) model for minimizing the chip area of a heterogeneous multiprocessor system under real-time and SEU vulnerability constraints. Finally, we show several experimental results on our synthesis approach. Experimental results show that our design paradigm has achieved automatic generation of cost-competitive and reliable heterogeneous multiprocessor systems.

2010-12-01 01:47:00
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