Search results for: Koichi Sato

Items from 1 to 20 out of 213 results

article

Unique left pulmonary vein isolation in straight common trunk based on longitudinal conduction of left lateral ridge

Koji Fukuda, Tsuyoshi Takada, Hiroyuki Satake, Kentaro Aizawa, more

Pacing and Clinical Electrophysiology > 45 > 5 > 598 - 604

Background A left common pulmonary vein (LCPV) is the most common anatomical variation in the pulmonary vein (PV) and often influences strategies of PV isolation for atrial fibrillation (AF). Our objective was to elucidate the electrical properties of the specific shape of LCPV and to apply it to an ablation procedure. Methods and results We investigated consecutive 12 out of 204 paroxysmal AF...

article

49‐2: Invited Paper: Blue and Green VCSEL for Full‐Color Display

Tatsushi Hamaguchi, Yukio Hoshina, Tatsuro Jyokawa, Maho Ohara, more

SID Symposium Digest of Technical Papers > 52 > 1 > 677 - 679

VCSELs have recently received increasing attention from engineers and scientists. The progress of the research on GaN‐based VCSELs that allowed blue and green emissions are often one of the main topics discussed in this field. Combining these lasers with existing red VCSELs realized a full‐color light source with superior characteristics of VCSELs, such as small power consumption, circular beam profiles,...

article

Higher serum levels of autotaxin and phosphatidylserine‐specific phospholipase A₁ in patients with lupus nephritis

Yasunori Iwata, Shinji Kitajima, Junya Yamahana, Shuji Shimomura, more

International Journal of Rheumatic Diseases > 24 > 2 > 231 - 239

Background Recent studies revealed that lysophospholipids (LPLs) and related molecules, such as autotaxin (ATX) and phosphatidylserine‐specific phospholipase A₁ (PS‐PLA₁), are candidates for novel biomarkers in melanoma, glaucoma and diabetic nephropathy. However, it is not clear whether serum levels of ATX/ PS‐PLA₁ would be associated with pathological and clinical findings of lupus nephritis (LN)...

article

Cognitive behavioral therapy for postpartum panic disorder: a case series

Kazuki Matsumoto, Koichi Sato, Sayo Hamatani, Yukihiko Shirayama, more

BMC Psychology > 2019 > 7 > 1 > 1-14

Background Clinical anxiety is common during the perinatal period, and anxiety symptoms often persist after childbirth. Ten to 30 % of perinatal women are diagnosed with panic disorder (PD)—far more than the 1.5–3% rate among the general population. Although cognitive behavioral therapy (CBT) has been determined to be an effective treatment for PD, few studies have been conducted on CBT effectiveness...

article

A case of secondary IgA nephropathy accompanied by psoriasis treated with secukinumab

Masahiko Ochi, Tadashi Toyama, Mai Ando, Koichi Sato, more

CEN Case Reports > 2019 > 8 > 3 > 200-204

A 60-year-old man was diagnosed with psoriasis 4 years ago. Treatment with adalimumab (a monoclonal anti-TNF-α antibody) became ineffective 1 year ago, and proteinuria and urinary occult blood were detected. Treatment with topical medicine, ultraviolet therapy, and etretinate resulted in remission of psoriasis, and proteinuria and hematuria also improved. For maintenance of remission, treatment with...

article

DNA methylation genome-wide analysis in remnant and primary gastric cancers

Kiichi Sugimoto, Tomoaki Ito, Alicia Hulbert, Chen Chen, more

Gastric Cancer > 2019 > 22 > 6 > 1109-1120

Background Although primary (PGC) and remnant gastric cancers (RGC) both originate from the same gastrointestinal organ, they have very distinct clinicopathological behaviors. We hypothesized that there would be distinct differences in DNA methylation patterns that would occur during carcinogenesis of RGC and PGC, and that the differences in methylation patterns may help identify the primary factor...

article

Extracellular acidification-induced CXCL8 production through a proton-sensing receptor OGR1 in human airway smooth muscle cells: a response inhibited by dexamethasone

Maiko Kadowaki, Hidenori Yamada, Koichi Sato, Hiroko Shigemi, more

Journal of Inflammation > 2019 > 16 > 1 > 1-10

Background Human airway smooth muscle cells (ASMCs) contribute to bronchial contraction and airway hyperresponsiveness in patients with bronchial asthma. They also generate cytokines, chemokines, and matricellular proteins. Ovarian cancer G protein-coupled receptor 1 (OGR1) senses extracellular protons and mediates the production of interleukin-6 (IL-6) and connective tissue growth factor (CTGF) in...

article

Postprandial hypotension in older people receiving tube feeding through gastrostomy

Koichi Sato, Tomonori Sugiura, Nobuyuki Ohte, Yasuaki Dohi

Geriatrics & Gerontology International > 18 > 10 > 1474 - 1478

Aim Postprandial hypotension (PPH) is recognized as a clinical problem, constituting a potential risk for cerebral and cardiovascular events, as well as mortality. The present study was designed to test the hypothesis that PPH is prevented by slowing the infusion rate of enteral nutrition through tube feeding and by avoiding the administration of antihypertensive drugs just before the start of tube...

article

Histone Methylation by SETD1A Protects Nascent DNA through the Nucleosome Chaperone Activity of FANCD2

Martin R. Higgs, Koichi Sato, John J. Reynolds, Shabana Begum, more

Molecular Cell > 2018 > 71 > 1 > 25-41.e6

Components of the Fanconi anemia and homologous recombination pathways play a vital role in protecting newly replicated DNA from uncontrolled nucleolytic degradation, safeguarding genome stability. Here we report that histone methylation by the lysine methyltransferase SETD1A is crucial for protecting stalled replication forks from deleterious resection. Depletion of SETD1A sensitizes cells to replication...

article

Tu1689 - Long-Term Outcomes of Colorectal Cancer Patients with and without Malignant Large-Bowel Obstruction

Riku Yamamoto, Shinya Munakata, Tomoyuki Kushida, Hajime Orita, more

Gastroenterology > 2018 > 154 > 6(S1) > S-1352

article

Preparation and pervaporation performance of vinyl-functionalized silica membranes

Sadao Araki, Ami Okabe, Akira Ogawa, Daisuke Gondo, more

Journal of Membrane Science > 2018 > 548 > C > 66-72

Pervaporation using hydrophobic membranes to separate azeotropic and thermally degradable mixtures, and organics from aqueous solutions with low concentrations has attracted attention. On the other hand, distillation, which is the conventional and commercialized separation method, is unsuitable for the separation of these mixtures. In this study, an α-alumina substrate coated with a γ-alumina layer...

article

Protective effect of a newly developed fucose-deficient recombinant antithrombin against histone-induced endothelial damage

Toshiaki Iba, Tatsuhiko Hirota, Koichi Sato, Isao Nagaoka

International Journal of Hematology > 2018 > 107 > 5 > 528-534

s Antithrombin is expected to modulate both prothrombotic and proinflammatory reactions in sepsis; vascular endothelium is the primary target. In the present study, we sought to evaluate the protective effects of a newly developed fucose-deficient recombinant antithrombin. Endothelial cells were treated in vitro with histone H4 to induce cellular damage. Low to high doses of either plasma-derived...

article

Association of physical activity with a systolic blood pressure difference between arms in older people

Koichi Sato, Tomonori Sugiura, Nobuyuki Ohte, Yasuaki Dohi

Geriatrics & Gerontology International > 18 > 1 > 95 - 100

Aim A increase in interarm systolic blood pressure difference (IASBPD) is believed to lead to increased risk of cardiovascular disease and to be a predictor of future cardiovascular events. The purpose of the present study was to test the hypothesis that an increased IASBPD is associated with reduced physical activity in older people. Methods Older people who used a geriatric health services facility...

article

Correlation between immune-related adverse events and efficacy in non-small cell lung cancer treated with nivolumab

Koichi Sato, Hiroaki Akamatsu, Eriko Murakami, Seigo Sasaki, more

Lung Cancer > 2018 > 115 > C > 71-74

Patients treated with nivolumab often experience its unique adverse events, called immune-related adverse events (irAEs). Regarding the mechanisms of immune-checkpoint inhibitors (ICIs), the occurrence of irAEs may also reflect antitumor responses. Here, we report the clinical correlation between irAEs and efficacy in NSCLC patients treated with nivolumab.Between December 2015 and February 2017, 38...

article

rCBF and cognitive impairment changes assessed by SPECT and ADAS-cog in late-onset Alzheimer’s disease after 18 months of treatment with the cholinesterase inhibitors donepezil or galantamine

Yukihiko Shirayama, Michio Takahashi, Yasunori Oda, Kouhei Yoshino, more

Brain Imaging and Behavior > 2019 > 13 > 1 > 75-86

Late-onset Alzheimer’s disease (AD) differs substantially from early-onset AD. In this cross sectional study we investigated brain perfusion changes after 18 months of treatment with cholinesterase inhibitors (ChEIs) donepezil or galantamine. Twenty-five drug-naïve late-onset AD patients were recruited from outpatient clinics. We examined brain perfusion using single photon emission computed tomography...

article

Quantitative evaluation of hydrogen atoms trapped at single vacancies in tungsten using positron annihilation lifetime measurements: Experiments and theoretical calculations

Koichi Sato, Akira Hirosako, Kazuki Ishibashi, Yuto Miura, more

Journal of Nuclear Materials > 2017 > 496 > C > 9-17

The change in the positron annihilation lifetime (PAL) of vacancies containing hydrogen atoms was investigated by taking PAL measurements in tungsten. The vacancies were introduced by electron irradiation, and hydrogen atoms were charged under a high-pressure hydrogen atmosphere (5.8 MPa). The PAL of single vacancies was measured to be approximately 175 ps, which decreased to approximately 155 ps...

article

Effects of combination therapy using antithrombin and thrombomodulin for sepsis-associated disseminated intravascular coagulation

Toshiaki Iba, Akiyoshi Hagiwara, Daizoh Saitoh, Hideaki Anan, more

Annals of Intensive Care > 2017 > 7 > 1 > 1-10

Background No single anticoagulant has been proven effective for sepsis-associated disseminated intravascular coagulation (DIC). Thus, the concomitant use of antithrombin concentrate and recombinant thrombomodulin has been conceived. This observational study was conducted to investigate the efficacy and safety of this combination therapy. Methods A total of 510 septic DIC patients who received antithrombin...

article

Furfural production from xylose and bamboo powder over chabazite-type zeolite prepared by interzeolite conversion method

Kurumi Yoshida, Hidetaka Nanao, Yoshimichi Kiyozumi, Koichi Sato, more

Journal of the Taiwan Institute of Chemical Engineers > 2017 > 79 > C > 55-59

Furfural was directly obtained from bamboo powder in water–toluene biphasic solvents at 443 K over a chabazite-type (CHA) zeolite prepared with an interzeolite conversion method from a faujasite-type zeolite. The CHA zeolite was effective for the hydrolysis of hemicellulose fraction in ball-milled bamboo powder to xylose and selective dehydration of xylose to furfural.

article

Temporal Trends in Prevalence and Outcomes of Geriatric Patients with Acute Myocardial Infarction Complicated with Heart Failure -Miyagi AMI Registry-

Koichi Sato, Jun Takahashi, Yuanji Cui, Kiyotaka Hao, more

Journal of Cardiac Failure > 2017 > 23 > 10(S) > S15

article

Activation of the FA pathway mediated by phosphorylation and ubiquitination

Masamichi Ishiai, Koichi Sato, Junya Tomida, Hiroyuki Kitao, more

Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis > 2017 > 803-805 > C > 89-95

Fanconi anemia (FA) is a devastating hereditary condition that impacts genome integrity, leading to clinical features such as skeletal and visceral organ malformations, attrition of bone marrow stem cells, and carcinogenesis. At least 21 proteins, when absent or defective, have been implicated in this disorder, and they together constitute the FA pathway, which functions in detection and repair of,...

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ACIDITY (6)
DIRECT HYDROXYLATION (5)
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INFONA - science communication portal

Search results for: Koichi Sato

Unique left pulmonary vein isolation in straight common trunk based on longitudinal conduction of left lateral ridge

49‐2: Invited Paper: Blue and Green VCSEL for Full‐Color Display

Higher serum levels of autotaxin and phosphatidylserine‐specific phospholipase A₁ in patients with lupus nephritis

Cognitive behavioral therapy for postpartum panic disorder: a case series

A case of secondary IgA nephropathy accompanied by psoriasis treated with secukinumab

DNA methylation genome-wide analysis in remnant and primary gastric cancers

Extracellular acidification-induced CXCL8 production through a proton-sensing receptor OGR1 in human airway smooth muscle cells: a response inhibited by dexamethasone

Postprandial hypotension in older people receiving tube feeding through gastrostomy

Histone Methylation by SETD1A Protects Nascent DNA through the Nucleosome Chaperone Activity of FANCD2

Tu1689 - Long-Term Outcomes of Colorectal Cancer Patients with and without Malignant Large-Bowel Obstruction

Preparation and pervaporation performance of vinyl-functionalized silica membranes

Protective effect of a newly developed fucose-deficient recombinant antithrombin against histone-induced endothelial damage

Association of physical activity with a systolic blood pressure difference between arms in older people

Correlation between immune-related adverse events and efficacy in non-small cell lung cancer treated with nivolumab

rCBF and cognitive impairment changes assessed by SPECT and ADAS-cog in late-onset Alzheimer’s disease after 18 months of treatment with the cholinesterase inhibitors donepezil or galantamine

Quantitative evaluation of hydrogen atoms trapped at single vacancies in tungsten using positron annihilation lifetime measurements: Experiments and theoretical calculations

Effects of combination therapy using antithrombin and thrombomodulin for sepsis-associated disseminated intravascular coagulation

Furfural production from xylose and bamboo powder over chabazite-type zeolite prepared by interzeolite conversion method

Temporal Trends in Prevalence and Outcomes of Geriatric Patients with Acute Myocardial Infarction Complicated with Heart Failure -Miyagi AMI Registry-

Activation of the FA pathway mediated by phosphorylation and ubiquitination

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