Sayaka Ono

ORCID: 0000-0002-3771-5005
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About
Contact & Profiles
Research Areas
  • Renal Diseases and Glomerulopathies
  • Genetic Neurodegenerative Diseases
  • Probabilistic and Robust Engineering Design
  • Proteoglycans and glycosaminoglycans research
  • Model Reduction and Neural Networks
  • Amyotrophic Lateral Sclerosis Research
  • Hedgehog Signaling Pathway Studies
  • Control Systems and Identification
  • Nerve injury and regeneration
  • Advanced MRI Techniques and Applications
  • Complement system in diseases
  • Neurological disorders and treatments
  • MRI in cancer diagnosis
  • Vasculitis and related conditions
  • Renal and Vascular Pathologies
  • Parkinson's Disease Mechanisms and Treatments
  • Pediatric Urology and Nephrology Studies
  • Fibroblast Growth Factor Research
  • Cerebrovascular and genetic disorders
  • Cellular Mechanics and Interactions
  • Thyroid and Parathyroid Surgery
  • Child Abuse and Related Trauma
  • Drug Transport and Resistance Mechanisms
  • Ultrasound Imaging and Elastography
  • Metabolism and Genetic Disorders

Teikyo University
1987-2025

Creative Commons
2022

Saiseikai Ibaraki Hospital
2021

Jichi Medical University
2015-2018

Jichi Medical University Saitama Medical Center
2015-2016

Bioscience (China)
2015

Nagoya University
1996-2011

National Defense Medical College
2002

In patients with aromatic l-amino acid decarboxylase (AADC) deficiency, a decrease in catecholamines and serotonin levels the brain leads to developmental delay movement disorders. The beneficial effects of gene therapy from 1 8 years age homogeneous severity disease have been reported Taiwan. We conducted an open-label phase 1/2 study population including adolescent different degrees severity. Six were enrolled: four males (ages 4, 10, 15 19 years) one female (age 12 severe phenotype who...

10.1093/brain/awy331 article EN cc-by-nc Brain 2018-12-23

Glycosaminoglycans (GAGs), large anionic glycopolymers, are the glycan portion of proteoglycans and important components extracellular matrix. Recently we reported that polysialic acid, a polyanionic glycopolymer specific to brain, binds neurotrophic factors form complex. It is not clear whether GAGs also bind In present study, demonstrate brain-derived factor (BDNF) dimer directly other than chondroitin hyaluronic acid Neurotrophin-3 showed similar GAG binding properties. Furthermore, BDNF,...

10.1271/bbb.90637 article EN Bioscience Biotechnology and Biochemistry 2009-12-23

Polysialic acid (polySia) is a linear polymer of sialic that modifies neural cell adhesion molecule (NCAM) in the vertebrate brain. PolySia large and exclusive functions as negative regulator cell–cell interactions. Recently, we demonstrated polySia can specifically bind fibroblast growth factor 2 (FGF2) BDNF; however, protective effects on proteolytic cleavage these proteins remain unknown, although heparin/heparan sulfate has been shown to impair FGF2 by trypsin. Here, analyzed...

10.1093/glycob/cwv049 article EN Glycobiology 2015-07-11

Freezing of gait (FOG) is a common disorder in Parkinson’s disease (PD) and could be attributed to reduction brain noradrenaline. The aim this study was determine the relationship between aromatic L -amino acid decarboxylase (AADC) activity locus coeruleus (LC) FOG PD using high-resolution positron emission tomography with an AADC tracer, 6-[ 18 F]fluoro- - m -tyrosine (FMT). We assessed 40 patients 11 age-matched healthy individuals. diagnosed based on UK Brain Bank criteria by two movement...

10.1155/2016/5430920 article EN cc-by Parkinson s Disease 2016-01-01

Abstract Aromatic l-amino acid decarboxylase (AADC) is an essential dopamine-synthesizing enzyme. In children with AADC deficiency, the gene delivery of into putamen, which functionally interacts cortical regions, was found to improve motor function and ameliorate dystonia. However, how restoration dopamine in putamen association cortico-putaminal networks leads therapeutic effects remains unclear. Here, we examined neuroimaging data eight patients deficiency (five males three females, age...

10.1093/braincomms/fcab078 article EN cc-by Brain Communications 2021-01-01

Bioelectrical impedance analysis (BIA) is a commonly used noninvasive technique for body composition assessment with recently expanded indications. This reproducible measurement method uses electrical conductivity to evaluate composition, including fluid status. In pediatric idiopathic nephrotic syndrome (INS), albumin leaks into the urine, resulting in dysregulated colloid-osmotic pressure blood vessels. results decreased circulating volume and edema. Blood tests are useful evaluation...

10.21037/acr-23-211 article EN AME Case Reports 2024-06-11

Neuropeptide Y (NPY) has at least three receptors (Y1, Y2, and Y3) through which it influences different mechanisms in many cell types. Previous data suggest that the Y2 receptor may be divided into prejunctional postjunctional subgroups. We have examined intracellular signalling pathways of rat renal proximal tubules. The results indicate NPY regulates Na+,K(+)-ATPase several pathways: (1) In tubule (PT) cells increased calcium. response was blocked by removing extracellular calcium also...

10.1046/j.1365-201x.1996.508274000.x article EN Acta Physiologica Scandinavica 1996-08-01

Model order reduction is an important tool in control systems theory. In particular, it useful for controller design since the dimension of becomes very high when we use advanced Balanced truncation one most model methods. But general stability feedback system not maintained reduced by balanced truncation. This paper proposes a novel method which can preserve system. A numerical example demonstrates effectiveness proposed method.

10.1109/cdc.2010.5718093 article EN 2021 60th IEEE Conference on Decision and Control (CDC) 2010-12-01

Despite the usefulness of blood oxygenation level-dependent (BOLD) MRI in assessing glomerulonephritis activity, its relationship with histological findings remains unclear. Because presents multiple complex injury patterns, analysis each pattern is essential. We aimed to elucidate between kidney and BOLD mesangial proliferative glomerulonephritis.

10.2463/mrms.mp.2022-0140 article EN cc-by-nc-nd Magnetic Resonance in Medical Sciences 2023-02-06

Real-time ultrasound-guided percutaneous kidney biopsy is essential for diagnosis and treatment planning; nonetheless, the optimal puncture approach has yet to be established. In vivo, performing different approaches on same patient at once not possible. This study aimed determine impact of number obtained glomeruli their potential cause arterial injury using pig kidneys, which are similar humans.A total 120 kidneys (60 right-sided 60 left-sided kidneys) research were from a slaughterhouse....

10.1159/000533593 article EN American Journal of Nephrology 2023-01-01

The authors declare no conflict of interest.

10.1111/ped.14605 article EN Pediatrics International 2021-07-29

In this paper, we propose a finite-dimensional approximation for nonlinear infinite-dimensional system via balanced realization. The proposed method is accomplished by realization and singular value analysis systems. This approach expected to derive effective approximate models preserving particular input-output behavior. Necessary sufficient conditions characterizing systems are derived. Furthermore, the effectiveness of shown numerical simulation.

10.1109/cdc.2008.4739031 article EN 2008-01-01

In this paper, we propose a finite-dimensional approximation for nonlinear infinite-dimensional system via balanced realization.The proposed method is accomplished by realization and singular value analysis systems.This approach expected to derive effective approximate models preserving particular input-output behavior.To obtain systems, sufficient condition necessary one characterizing them are derived.Finally, the effectiveness of shown numerical simulation.

10.9746/ve.sicetr1965.44.243 article EN Transactions of the Society of Instrument and Control Engineers 2008-01-01

Stabilizing blood levels with microemulsified cyclosporine A (CsA), administered in many pediatric kidney diseases, is important for effective immunosuppression and reduced nephrotoxicity. CsA affected by total bile acids (TBAs); however, no reports have simultaneously measured both. We aimed to elucidate the hypothesized relationship between TBA diurnal variation children.We retrospectively reviewed medical records of children who were taking oral treatment diseases January 2016 July 2021....

10.1111/ped.15296 article EN Pediatrics International 2022-01-01
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