Taeang Arai

Dr. Taeang Arai


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
26 January 2020 in Cancers
Verified
Journal Article
Open access
PDF file
MCMakoto Chuma
Makoto Chuma
HUHaruki Uojima
Haruki Uojima
KNKazushi Numata
Kazushi Numata
HHHisashi Hidaka
Hisashi Hidaka
HTHidenori Toyoda
Hidenori Toyoda
Shin MaedaShin Maeda
Shin Maeda
Predictive biomarkers of the response of hepatocellular carcinoma (HCC) to Lenvatinib therapy have not yet been clarified. The aim of this study was to identify clinically significant biomarkers of response to Lenvatinib therapy, to target strategies against HCC. Levels of circulating angiogenic factors (CAFs) were analyzed in blood samples collected at baseline and after introducing lenvatinib, from 74 Child-Pugh class A HCC patients who received lenvatinib. As CAF biomarkers, serum vascular endothelial growth factor (VEGF), fibroblast growth factor 19 (FGF19), FGF23, and angiopoietin-2 (Ang-2) were measured using enzyme-linked immunosorbent assays. Results: Significantly increased FGF19 (FGF19-i) levels and decreased Ang-2 (Ang-2-d) levels were seen in Lenvatinib responders as compared to non-responders (ratio of FGF19 level at 4 weeks/baseline in responders vs. non-responders: 2.09 vs. 1.32, respectively, p = 0.0004; ratio of Ang-2 level at four weeks/baseline: 0.584 vs. 0.810, respectively, p = 0.0002). Changes in FGF23 and VEGF levels at four weeks versus baseline, however, were not significantly different in responders versus non-responders. In multivariate analysis, the combination of serum FGF19-i and Ang-2-d was the most independent predictive factor for Lenvatinib response (Odds ratio, 9.143; p = 0.0012). Furthermore, this combination biomarker showed the greatest independent association with progression-free survival (Hazard ratio, 0.171; p = 0.0240). Early changes in circulating FGF19 and Ang-2 levels might be useful for predicting clinical response and progression-free survival in HCC patients on Lenvatinib therapy.

30 May 2021 in Nutrients
Verified
Journal Article
Open access
PDF file
TOTOMOMI OKUBO
TOMOMI OKUBO
MAMasanori Atsukawa
Masanori Atsukawa
Akihito TsubotaAkihito Tsubota
Akihito Tsubota
HOHiroki Ono
Hiroki Ono
TKTadamichi Kawano
Tadamichi Kawano
KIKatsuhiko Iwakiri
Katsuhiko Iwakiri
Background: Sarcopenia worsens patient prognoses in chronic liver disease. This study aimed to elucidate the effects of vitamin D supplementation on skeletal muscle volume and strength in patients with decompensated cirrhosis. Methods: Thirty-three patients were entered into the study based on the criteria and then randomly assigned to two groups: Group A (n = 17), the control group, and Group B (n = 16), those who received oral native vitamin D3 at a dose of 2000 IU once a day for 12 months. Results: SMI values in Group B were significantly increased at 12 months (7.64 × 10−3). The extent of changes in the SMI and grip strength in Group B were significantly greater than that in Group A at 12 months (p = 2.57 × 10−3 and 9.07 × 10−3). The median change rates in the SMI were +5.8% and the prevalence of sarcopenia was significantly decreased from 80.0% (12/15) to 33.3% (5/15; p = 2.53 × 10−2) in Group B. Conclusions: Vitamin D supplementation might be an effective and safe treatment option for patients with decompensated cirrhosis to increase or restore the skeletal muscle volume and strength or prevent the muscle volume and strength losses.

Verified
Journal Article
Open access
PDF file
Yoshio SumidaYoshio Sumida
Yoshio Sumida
MYMasashi Yoneda
Masashi Yoneda
HTHidenori Toyoda
Hidenori Toyoda
SYSatoshi Yasuda
Satoshi Yasuda
Toshifumi TadaToshifumi Tada
Toshifumi Tada
J(Japan Study Group of NAFLD (JSG-NAFLD)
Japan Study Group of NAFLD (JSG-NAFLD)
Type 2 diabetes (T2D) is associated with diabetic nephropathy as well as nonalcoholic steatohepatitis (NASH), which can be called “diabetic hepatopathy or diabetic liver disease”. NASH, a severe form of nonalcoholic fatty disease (NAFLD), can sometimes progress to cirrhosis, hepatocellular carcinoma and hepatic failure. T2D patients are at higher risk for liver-related mortality compared with the nondiabetic population. NAFLD is closely associated with chronic kidney disease (CKD) or diabetic nephropathy according to cross-sectional and longitudinal studies. Simultaneous kidney liver transplantation (SKLT) is dramatically increasing in the United States, because NASH-related cirrhosis often complicates end-stage renal disease. Growing evidence suggests that NAFLD and CKD share common pathogenetic mechanisms and potential therapeutic targets. Glucagon-like peptide 1 (GLP-1) receptor agonists and sodium–glucose cotransporter 2 (SGLT2) inhibitors are expected to ameliorate NASH and diabetic nephropathy/CKD. There are no approved therapies for NASH, but a variety of drug pipelines are now under development. Several agents of them can also ameliorate diabetic nephropathy/CKD, including peroxisome proliferator-activated receptors agonists, apoptosis signaling kinase 1 inhibitor, nuclear factor-erythroid-2-related factor 2 activator, C-C chemokine receptor types 2/5 antagonist and nonsteroidal mineral corticoid receptor antagonist. This review focuses on common drug pipelines in the treatment of diabetic nephropathy and hepatopathy.

8 November 2024 in Diagnostics
Verified
Journal Article
Open access
PDF file
JKJonghyun Kim
Jonghyun Kim
TITakanori Ito
Takanori Ito
TATaeang Arai
Taeang Arai
MAMasanori Atsukawa
Masanori Atsukawa
MKMiwa Kawanaka
Miwa Kawanaka
Mindie H. NguyenMindie H. Nguyen
Mindie H. Nguyen
Background: The Fibrosis-4 (FIB-4) index is widely recommended as a first-tier method for screening advanced hepatic fibrosis; however, its diagnostic performance is known to be suboptimal in patients with Type 2 diabetes mellitus (T2DM). We aim to propose a modified FIB-4, using the parameters of the existing FIB-4, tailored specifically for diabetic patients with metabolic dysfunction-associated steatotic liver disease (MASLD). Methods: A total of 1503 patients who underwent liver biopsy were divided into T2DM (n = 517) and non-T2DM (n = 986) groups. The model was developed using multiple regression analysis in the derivation cohort and validated in the validation cohort. Diagnostic accuracy was evaluated using the area under the receiver operating characteristic (AUC) curves. Results: Among the 1503 individuals, those with T2DM were older, more likely to be male, and had a higher prevalence of advanced hepatic fibrosis (≥F3) compared to non-T2DM individuals. Independent risk factors for advanced fibrosis in T2DM included age, AST, AST/ALT ratio, albumin, triglycerides, and platelet count. The optimized FIB-4 model for T2DM with MASLD (Diabetes Fibrosis Index) demonstrated superior diagnostic accuracy (AUC 0.771) compared to the FIB-4 (AUC 0.735, p = 0.012). The model showed a higher negative predictive value than the original FIB-4 across all age groups in the diabetic group. Conclusions: The newly optimized FIB-4 model for T2DM with MASLD (Diabetes Fibrosis Index), incorporating a non-linear predictive model, improves diagnostic performance (AUC) and the negative predictive value in MASLD with T2DM.

7 March 2025 in Journal of Gastroenterology
Verified
Journal Article
Open access
PDF file
TMTakao Miwa
Takao Miwa
MTMio Tsuruoka
Mio Tsuruoka
HUHajme Ueda
Hajme Ueda
TATamami Abe
Tamami Abe
HIHiroki Inada
Hiroki Inada
Masahito ShimizuMasahito Shimizu
Masahito Shimizu
Background: Covert hepatic encephalopathy (CHE) leads to devastating outcomes in patients with cirrhosis. This study aims to elucidate the current management and future perspectives of CHE in Japan. Methods: A questionnaire-based cross-sectional study was conducted among physicians involved in managing cirrhosis in Japan. The primary aim was to elucidate the real-world management of CHE, including testing and treatment. Factors influencing the implementation of CHE testing were analyzed using a logistic regression model. Limitations and future perspectives for improving the management of CHE were also evaluated. Results: Of 511 physicians surveyed, 93.9% recognized CHE as a significant problem, and 86.9% agreed that it should be tested. Overall, 62.8% of physicians tested for CHE, whereas 37.2% did not. Multivariable analysis identified institutional factors and certifying board as significant determinants of CHE test implementation. The Stroop (68.2%) and neuropsychiatric tests (57.5%) were the most commonly used methods of identifying CHE. Among those who tested for CHE, 87.7% treated CHE; the most common treatments were lactulose (81.5%), rifaximin (76.3%), and branched-chain amino acids (70.4%). Among non-testers, the primary barrier was the time requirement for testing. Proposals to encourage CHE testing included the development of simple tests and integration of multidisciplinary teams. Conclusions: Most physicians involved in cirrhosis care in Japan recognize CHE as a significant problem that warrants testing. However, testing for CHE remains limited by institutional factors and physician specialties. Time requirements for CHE testing are the primary barrier, and simple tests and multidisciplinary teams are recommended to enhance CHE management.

1 August 2023 in Journal of Gastroenterology
Verified
Journal Article
Closed access
PDF file
FTFujimasa Tada
Fujimasa Tada
AHAtsushi Hiraoka
Atsushi Hiraoka
Toshifumi TadaToshifumi Tada
Toshifumi Tada
MHMasashi Hirooka
Masashi Hirooka
KKKazuya Kariyama
Kazuya Kariyama
HTHidenori Toyoda
Hidenori Toyoda