Megumi Hirayama

ORCID: 0000-0002-9113-5482
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Lipid metabolism and biosynthesis
  • Cancer, Hypoxia, and Metabolism
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Sphingolipid Metabolism and Signaling
  • Mass Spectrometry Techniques and Applications
  • Peroxisome Proliferator-Activated Receptors
  • Pancreatic function and diabetes
  • Metabolomics and Mass Spectrometry Studies
  • Urologic and reproductive health conditions
  • Dietary Effects on Health
  • Neuropeptides and Animal Physiology
  • Cardiovascular, Neuropeptides, and Oxidative Stress Research
  • Protein Kinase Regulation and GTPase Signaling
  • Urological Disorders and Treatments
  • Immune Response and Inflammation
  • Nanoplatforms for cancer theranostics
  • Diet, Metabolism, and Disease
  • Drug Transport and Resistance Mechanisms
  • RNA modifications and cancer
  • Liver Disease Diagnosis and Treatment
  • Adipose Tissue and Metabolism
  • Diet and metabolism studies
  • Blood groups and transfusion
  • Diabetes and associated disorders

Saitama Children's Medical Center
2024

Takeda (Japan)
2016-2020

Kumamoto University
2007

Aoyama Hospital Tokyo Women’s Medical University
2005

Calcitonin gene-related peptide (CGRP) is thought to be a prominent neuropeptide in cardiovascular regulation and neuroimmune modulation. There are two isoforms of CGRP (alphaCGRP betaCGRP), the main receptors probably composed calcitonin receptor-like receptor (CLR) activity-modifying protein (RAMP)1. However, physiological functions that mediated through CLR/RAMP1 remain clarified. For an improved understanding functions, we generated mice deficient RAMP1, specific subunit receptors, by...

10.1073/pnas.0705974104 article EN Proceedings of the National Academy of Sciences 2007-10-09

Malic enzyme 1 (ME1) regulates one of the main pathways that provide nicotinamide adenine dinucleotide phosphate (NADPH), which is essential for cancer cell growth through maintenance redox balance and biosynthesis processes in cytoplasm. In this study, we found ME1 inhibition disrupted metabolism cells inhibited by inducing senescence or apoptosis. glucose-restricted culture conditions, increased expression, tracer experiments with labelled glutamine revealed flux ME1-derived pyruvate to...

10.1038/oncsis.2017.34 article EN cc-by Oncogenesis 2017-05-08

Monoacylglycerol O-acyltransferase 2 (MGAT2) catalyzes the synthesis of diacylglycerol (DG), a triacylglycerol precursor and potential peripheral target for novel anti-obesity therapeutics. High-throughput screening identified lead compounds with MGAT2 inhibitory activity. Through structural modification, potent, selective, orally bioavailable inhibitor, compound A (compA), was discovered. CompA dose-dependently inhibited postprandial increases in plasma triglyceride (TG) levels. Metabolic...

10.1371/journal.pone.0150976 article EN cc-by PLoS ONE 2016-03-03

Aim Liver biopsy is still required for the diagnosis of hepatocellular ballooning and inflammation, which are important histological features non‐alcoholic steatohepatitis. We undertook this multicenter, cross‐sectional study to identify novel blood markers ballooning. Methods enrolled 176 patients, whom 132 were proven by liver as having fatty disease (NAFLD) classified non‐ballooning (ballooning grade 0) ( n = 83) or 1 2) 49) a central pathology review. carried out gas chromatography–mass...

10.1111/hepr.13528 article EN Hepatology Research 2020-05-26

Objectives Ectopic ureter and ureterocele need an adequate treatment plan different surgical interventions. However, some cases appear as intravesical cystic lesions on ultrasound, with ectopic sometimes reported pseudoureterocele. This study aimed to describe the sonographic imaging findings of differentiate between pseudoureterocele ureterocele. Methods Nineteen patients duplex collecting system that were classified into based included. The ultrasound compared 2 groups follows: lesion...

10.1002/jum.16577 article EN Journal of Ultrasound in Medicine 2024-09-12

Abstract Both exercise and calorie restriction interventions have been recommended for inducing weight-loss in obese states. However, there is conflicting evidence on their relative benefits metabolic health insulin sensitivity. This study seeks to evaluate the differential effects of two fat mobilization, metabolism, sensitivity diet-induced animal models. After 4 months ad libitum high diet feeding, 35 male Fischer F344 rats were grouped (n = 7 per cohort) into sedentary control (CON),...

10.1038/srep26445 article EN cc-by Scientific Reports 2016-05-20

ABO blood antigens on the human red cell membrane as well different cells in various tissues have been thoroughly studied. Anti-A and -B antibodies of IgM are present serum/plasma, but group-specific glyco-antigens not extensively described. In this study, we performed comprehensive quantitative serum glycomic analyses glycoconjugates free oligosaccharides all groups. Our approach revealed that serum/plasma predominantly glycosphingolipids lipoproteins rather than glycoproteins. Expression...

10.1021/acs.jproteome.1c00056 article EN Journal of Proteome Research 2021-03-10

症例1 : 71歳,男性。健診にて十二指腸下行脚に径10mm有茎性の粘膜下腫瘍を認め,生検にてカルチノイドと診断し内視鏡下ポリペクトミーにて完全切除した。症例2 60歳,男性。内視鏡検査にて十二指腸下行脚に径30mmの粘膜下腫瘍を認め,boring biopsyにてカルチノイドと診断し,十二指腸部分切除術を施行した。今回我々は形態の異なる2例を経験したので文献的考察を加え報告した。

10.11641/pde.67.2_90 article JA Progress of Digestive Endoscopy 2005-01-01
Coming Soon ...