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26 results on '"Sato, Masatake"'

10. Factors influencing left atrial volume in treated hypertension

Author

Chen, Yuan, primary, Sato, Hirotomo, additional, Watanabe, Nobuhide, additional, Adachi, Tomoko, additional, Kodani, Nobuhiro, additional, Sato, Masatake, additional, Takahashi, Nobuyuki, additional, Kitamura, Jun, additional, Sato, Hidetoshi, additional, Yamaguchi, Kazuto, additional, Yoshitomi, Hiroyuki, additional, and Tanabe, Kazuaki, additional

Published
2012
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17. Scale Precipitation during Circulation of the Hijiori HDR Site, YAMAGATA, JAPAN.

Author

Yanagisawa, Norio, Matsunaga, Isao, Sugita, Hajime, Sato, Masatake, and Okabe, Takashi

Subjects
METEOROLOGICAL precipitation, CALCIUM carbonate, INJECTION wells, CALCITE, ROCK-forming minerals, PHYSICS
Abstract

Several kinds of scale precipitated in the pipeline and production well during a two-year circulation test in the Hijiori HDR system in Yamagata Prefecture, Japan. Amorphous silica and calcium carbonate scale tended to precipitate in the flow line, with the ratio of silica and calcium carbonate depending on fluid temperature and chemical composition. In the case of well HDR-2, located closer to the injection well, the flowing wellhead temperature was about 120°C and the major scale was calcium carbonate, with a precipitation rate of 13mm/month. However, in the case of well HDR-3, located further from the injection well, the wellhead temperature is about 160°C and there was a slight precipitation of amorphous silica scale. Anhydrite scale precipitated at the highest temperature zones in the deep part of the production wells because anhydrite has a reverse solubility curve and the fluid has a rich anhydrite composition dissolved from the rock of the deep reservoir. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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19. Two mouse piwi-related genes: miwi and mili

Author

Kuramochi-Miyagawa, Satomi, primary, Kimura, Tohru, additional, Yomogida, Kentaro, additional, Kuroiwa, Asato, additional, Tadokoro, Yuko, additional, Fujita, Yukiko, additional, Sato, Masatake, additional, Matsuda, Yoichi, additional, and Nakano, Toru, additional

Published
2001
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24. Factors influencing left atrial volume in treated hypertension.

Author

Yuan Chen, Sato, Hirotomo, Watanabe, Nobuhide, Adachi, Tomoko, Kodani, Nobuhiro, Sato, Masatake, Takahashi, Nobuyuki, Kitamura, Jun, Sato, Hidetoshi, Yamaguchi, Kazuto, Yoshitomi, Hiroyuki, and Tanabe, Kazuaki

Subjects
THERAPEUTICS, HYPERTENSION, LEFT heart atrium, LEFT heart ventricle, HEART failure, ATRIAL fibrillation, ECHOCARDIOGRAPHY, BLOOD testing
Abstract

Background: Left atrial (LA) enlargement has been documented to occur in hypertension (HT), and has been an index for evaluating the diastolic function of the left ventricle. Enlargement of the LA is one of the vital factors that induce heart failure and atrial fibrillation (AF) in patients with HT. Methods and subjects: 130 treated hypertensive patients were enrolled. All recruits participated in an echocardiogram, electrocardiogram, a routine blood examination including brain natriuretic peptide (BNP), and physical examinations. Results: Left ventricular mass (LVM) indexed to height2.7 had a significant positive correlation with left atrial volume index (LAVI) (p < 0.0001 ), as well as natural logarithm BNP (p < 0.001 ). Blood pressure levels were not associated with LAVI, neither body mass index nor age. LAVI had a positive correlation with factors involving the left ventricle volume, LVM, and right ventricle systolic pressure (RVSP) (r = 0.687, p < 0.0001 ). The parameters of LV diastolic function were positively but weakly associated with LA size. In the subgroup of LAVI, the evidence of paroxysmal atrial fibrillation (PAF): LAVI <32 ml/m² had no PAF, whereas the incidence of PAF was 7.5%, 11.4%, and 15.2%, respectively in the LAVI > 32 ml/m² group. Of anti-hypertension drugs, angiotensin-converting enzyme inhibitors and angiotensin receptor blockers had a tendency to reduce LAVI; however, there was no statistical significance within the groups. Conclusions: Left ventricular volume and mass are independent factors affecting LAVI in treated HT. The incidence of PAF is associated with LA size. In patients with treated HT, LA size may be a useful surrogate marker for monitoring the effectiveness of medical therapy and occurrence of AF. [ABSTRACT FROM AUTHOR]

Published
2012
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26. Successful endoscopic clipping for bleeding from colonic angiodysplasia in a case of Heyde syndrome.

Author

Takahashi N, Tanabe K, Yoshitomi H, Sato M, Kitamura J, Sato H, Ishibashi Y, Shimada T, and Oda T

Subjects
Aged, 80 and over, Female, Hemorrhage surgery, Humans, Protein Multimerization, Syndrome, von Willebrand Factor metabolism, Abnormalities, Multiple surgery, Angiodysplasia complications, Angiodysplasia surgery, Colonic Diseases complications, Colonic Diseases surgery, Endoscopy, Hemorrhage complications
Abstract

Background: Aortic valve sclerosis, calcification, and stenosis are common in the elderly. Increased life expectancy has resulted in a growing population of elderly people, with a corresponding increase in the number of patients with these degenerative aortic valve diseases., Case Report: We report a case of severe aortic stenosis in an 82-year-old woman with bleeding due to colonic angiodysplasia. The patient presented with anemia unexpectedly before her aortic valve replacement. Colon fiberscopy revealed that colonic angiodysplasia was responsible for the bleeding. The lesion was treated with endoscopic clipping before the successful aortic valve replacement. Additionally, her immunoblot analysis detected a decrease of large molecular weight multimers of von Willebrand factor., Conclusions: The relationship between aortic valve stenosis, acquired von Willebrand disease and gastrointestinal bleeding in elderly patients is known as Heyde syndrome. Clinicians should be aware of the possibilities of acquired von Willebrand disease and gastrointestinal bleeding from angiodysplasia in patients with aortic valve stenosis.

Published
2010

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