Satoko Nakamura

ORCID: 0000-0003-4367-696X
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About
Contact & Profiles
Research Areas
  • Ionosphere and magnetosphere dynamics
  • Solar and Space Plasma Dynamics
  • Earthquake Detection and Analysis
  • Blood Pressure and Hypertension Studies
  • Renal and Vascular Pathologies
  • Geomagnetism and Paleomagnetism Studies
  • Sodium Intake and Health
  • GNSS positioning and interference
  • Hormonal Regulation and Hypertension
  • Dialysis and Renal Disease Management
  • Cardiovascular Health and Disease Prevention
  • Cardiovascular Function and Risk Factors
  • Astro and Planetary Science
  • Heart Failure Treatment and Management
  • Chronic Kidney Disease and Diabetes
  • Lymphoma Diagnosis and Treatment
  • Cardiac Imaging and Diagnostics
  • Atrial Fibrillation Management and Outcomes
  • Geophysical and Geoelectrical Methods
  • Heart Rate Variability and Autonomic Control
  • Cerebrovascular and Carotid Artery Diseases
  • Aortic aneurysm repair treatments
  • Nutritional Studies and Diet
  • Pancreatic and Hepatic Oncology Research
  • Seismic Waves and Analysis

Kagawa Prefectural Central Hospital
2016-2025

Nagoya University
2006-2024

Earth and Space Research
2020-2024

Nippon Medical School
2024

Nagoya University Hospital
2022-2024

Kagoshima University
2023-2024

The University of Tokyo
2024

Institute of Space and Astronautical Science
2023

Japan Aerospace Exploration Agency
2023

Kansai University of Welfare Sciences
2018-2023

Background Sodium restriction has been widely used for treatment of hypertension and renal diseases. Whether sodium can transform the circadian rhythm blood pressure from nondipper to dipper is examined. Methods Results Patients (n=42) with essential were maintained on a high-sodium diet (12 15 g NaCl per day) low-sodium (1 3 g/d) 1 week each. On last day each diet, pressures measured noninvasively every hour 24 hours an automatic oscillometric device. Twenty-one patients classified as...

10.1161/01.cir.96.6.1859 article EN Circulation 1997-09-16

Searches for extrasolar planets have uncovered an astonishing diversity of planetary systems, yet the frequency solar system analogs remains unknown. The gravitational microlensing planet search method is potentially sensitive to multiple-planet systems containing all except Mercury. We report detection a with microlensing. identify two masses ∼0.71 and ∼0.27 times mass Jupiter orbital separations ∼2.3 ∼4.6 astronomical units orbiting primary star ∼0.50 at distance ∼1.5 kiloparsecs. This...

10.1126/science.1151947 article EN Science 2008-02-14

Abstract Renal denervation is a promising new non-pharmacological treatment for resistant hypertension. However, there lack of data from Asian patients. The REQUIRE trial investigated the blood pressure-lowering efficacy renal in treated patients with hypertension Japan and South Korea. Adults (seated office pressure ≥150/90 mmHg 24-hour ambulatory systolic ≥140 mmHg) suitable artery anatomy were randomized to ultrasound or sham procedure. primary endpoint was change baseline at 3 months. A...

10.1038/s41440-021-00754-7 article EN cc-by Hypertension Research 2021-10-15

A close linkage between chronic kidney disease (CKD) and cardiovascular (CVD) has been demonstrated. Coronary artery calcification (CAC) is considered to be the causal link connecting them. The aim of study determine relationship level function prevalence CAC.Autopsy subjects known have coronary a wide range were studied. Patients without CKD classified into five groups depending on estimated GFR (eGFR) proteinuria: eGFR > or =60 ml/min/1.73 m(2) proteinuria; CKD1/2: with CKD3: 60 >eGFR =30...

10.2215/cjn.04320709 article EN Clinical Journal of the American Society of Nephrology 2009-10-16

We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, second planet discovered by microlensing and first in a high-magnification event. These include photometric astrometric measurements from Hubble Space Telescope, as well constraints higher order effects extracted ground-based light curve, such microlens parallax, planetary orbital motion finite-source effects. Our primary analysis leads conclusion that host Jovian OGLE-2005-BLG-071Lb is an M dwarf foreground...

10.1088/0004-637x/695/2/970 article EN The Astrophysical Journal 2009-04-07

Increased renal restive index (RI) measured using Doppler ultrasonography has been shown to correlate with the degree of impairment in hypertensive patients. We investigated prognostic role RI cardiovascular and outcomes. A total 426 essential subjects (mean age, 63 years; 50% female) no previous disease were included this study. Renal segmental arterial was by duplex ultrasonography. During follow-up (mean, 3.1 years), 57 participants developed primary composite end points including In...

10.1161/hypertensionaha.112.196717 article EN Hypertension 2012-07-24

Abstract Pulsating aurorae (PsA) are caused by the intermittent precipitations of magnetospheric electrons (energies a few keV to tens keV) through wave-particle interactions, thereby depositing most their energy at altitudes ~ 100 km. However, maximum precipitated and its impacts on atmosphere unknown. Herein, we report unique observations European Incoherent Scatter (EISCAT) radar showing electron ranging from hundred MeV during PsA associated with weak geomagnetic storm. Simultaneously,...

10.1038/s41598-021-92611-3 article EN cc-by Scientific Reports 2021-07-13

Abstract We performed a comprehensive statistical study of electromagnetic ion cyclotron (EMIC) waves observed by the Van Allen Probes and Exploration energization Radiation in Geospace satellite (ERG/Arase). From 2017 to 2018, we identified categorized EMIC wave events with respect wavebands (H + He waves) relative locations from plasmasphere (inside outside plasmasphere). found that H morning sector at L > 8 are predominantly mixture linear right‐handed polarity higher normal angles...

10.1029/2020ja029001 article EN Journal of Geophysical Research Space Physics 2021-05-27

We investigated the relationship between sodium sensitivity and diurnal variation of blood pressure in patients with essential hypertension. Twenty-eight inpatients hypertension were maintained on high (12 to 15 g NaCl per day) low (1 3 diets for 1 week each. Twenty-four-hour urinary excretion measured at end each diet period, index was calculated as ratio change mean arterial rate by restriction. Patients whose average lowered more than 10% restriction assigned sodium-sensitive group (n =...

10.1161/01.hyp.28.1.139 article EN Hypertension 1996-07-01

Background and Purpose —Atherosclerotic renal artery stenosis commonly exists as one manifestation of more generalized atherosclerosis. It is a progressive but potentially curable disorder. Thus, information on involvement in atherosclerotic diseases could be important. We investigated the prevalence autopsied patients with stroke over 40 years age. Methods —From 2167 consecutive autopsy who died between 1980 1997, we studied 346 cases mean age 69±11 clinical evidence stroke. Results (≥75%...

10.1161/01.str.31.1.61 article EN Stroke 2000-01-01

Chronic kidney disease (CKD) has recently been recognized to be a powerful predictor of cardiovascular morbidity and mortality. Atrial fibrillation (AF), which is common arrhythmia in hypertensives, associated with increased risks events death. However, the association between CKD onset AF not fully elucidated. The present study assessed hypothesis that may influence hypertensives.A total 1118 hypertensive patients (mean age, 63 years) without previous paroxysmal AF, heart failure,...

10.1097/hjh.0b013e32833a7dfe article EN Journal of Hypertension 2010-05-18

Chronic kidney disease (CKD) is increasingly recognized as an independent risk factor for stroke and myocardial infarction (MI). Few studies, however, have examined the relationship between blood pressure (BP) category these diseases in subjects with without CKD.We studied 5494 Japanese individuals (ages 30 to 79, or MI at baseline) who completed a baseline survey received follow-up through December 2005. The glomerular filtration rate (GFR) was estimated using Modification of Diet Renal...

10.1161/strokeaha.109.550707 article EN Stroke 2009-05-29

We present a new analysis of the Jupiter+Saturn analog system, OGLE-2006-BLG-109Lb,c, which was first double planet system discovered with gravitational microlensing method. This is only multi-planet by any method measured masses for star and both planets. In addition to signatures two planets, this event also exhibits parallax signature finite source effects that provide direct measure expected brightness host confirmed Keck AO imaging, yielding M_* = 0.51(+0.05-0.04) M_sun, M_b 231+-19...

10.1088/0004-637x/713/2/837 article EN The Astrophysical Journal 2010-03-26

Rats with anterior septal lesions showed a pattern of consistent enhancement defensive behaviors normally elicited by threatening conspecifics, no attack or general reactivity. Further division this group indicated that damage to sites and ventral the area, previously implicated in "septal syndrome," produces maximal effect on these behaviors. When amygdala are combined enhanced responding is almost completely eliminated. These results were interpreted as indicating syndrome represents...

10.1037/h0077562 article EN Journal of Comparative and Physiological Psychology 1979-01-01

Abstract Plasmaspheric hiss has been widely regarded as a broadband, structureless, incoherent emission. In this study, by examining burst‐mode vector waveform data from the Electric and Magnetic Field Instrument Suite Integrated Science instrument on Van Allen Probes mission, we show that plasmaspheric is coherent emission with complex fine structure. Specifically, appears discrete rising tone falling elements. Our study comprises analysis of two 1 h samples within which total eight s were...

10.1002/2014ja020437 article EN Journal of Geophysical Research Space Physics 2014-10-29
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