Takayoshi Oikawa

Dr. Takayoshi Oikawa

orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

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

Representative Publications

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3 August 2020 in Cancers
Verified
Journal Article
Open access
PDF file
KEKei Endo
Kei Endo
Hidekatsu KurodaHidekatsu Kuroda
Hidekatsu Kuroda
JKJo Kanazawa
Jo Kanazawa
TSTakuro Sato
Takuro Sato
YFYudai Fujiwara
Yudai Fujiwara
YTYasuhiro Takikawa
Yasuhiro Takikawa
Although sarcopenia is characterized by a loss of muscle strength and skeletal muscle mass, few studies have evaluated the effect of muscle strength on hepatocellular carcinoma (HCC) patients. We evaluated the impact of sarcopenia-related factors (grip strength (GS) and the skeletal muscle index (SMI)) on the survival among lenvatinib-treated unresectable HCC (u-HCC) patients. This single-center cohort study was conducted at a university hospital. The study population included 63 lenvatinib-treated u-HCC patients managed between April 2018 and April 2020. A decreased GS and decreased SMI were found in 21 (33.3%) and 22 (34.9%) patients, respectively. The overall survival (OS) of the normal GS group was significantly higher than that of the decreased GS group, while that of the normal and decreased SMI groups did not differ markedly. There were no significant differences in the progression-free survival between the normal GS and decreased GS groups or the normal SMI and decreased SMI groups. A multivariate Cox proportional hazards model showed that modified albumin-bilirubin-grade (mALBI) 2b (hazard ratio (HR) 4.39) and a decreased GS (HR 3.55) were independently associated with an increased risk of poor prognosis. In addition to the hepatic functional reserve, a decreased GS was a poor prognostic factor in lenvatinib-treated u-HCC patients.

15 March 2021 in Cancers
Verified
Journal Article
Open access
PDF file
Hidekatsu KurodaHidekatsu Kuroda
Hidekatsu Kuroda
TNTomoaki Nagasawa
Tomoaki Nagasawa
YFYudai Fujiwara
Yudai Fujiwara
HSHiroki Sato
Hiroki Sato
TATamami Abe
Tamami Abe
YTYasuhiro Takikawa
Yasuhiro Takikawa
There is limited information regarding the oncological benefits of microwave ablation using ThermosphereTM technology for hepatocellular carcinoma. This study compared the overall survival and recurrence-free survival outcomes among patients with hepatocellular carcinoma after microwave ablation using ThermosphereTM technology and after radiofrequency ablation. Between December 2017 and August 2020, 410 patients with hepatocellular carcinoma (a single lesion that was ≤5 cm or ≤3 lesions that were ≤3 cm) underwent ablation at our institution. Propensity score matching identified 150 matched pairs of patients with well-balanced characteristics. The microwave ablation and radiofrequency ablation groups had similar overall survival rates at 1 year (99.3% vs. 98.2%) and at 2 years (88.4% vs. 87.5%) (p = 0.728), as well as similar recurrence-free survival rates at 1 year (81.1% vs. 76.2%) and at 2 years (60.5% vs. 62.1%) (p = 0.492). However, the microwave ablation group had a significantly lower mean number of total insertions (1.22 ± 0.49 vs. 1.59 ± 0.94; p < 0.0001). This retrospective study revealed no significant differences in the overall survival and recurrence-free survival outcomes after microwave ablation or radiofrequency ablation. However, we recommend microwave ablation for hepatocellular carcinoma tumors with a diameter of >2 cm based on the lower number of insertions.

15 July 2020 in Preprints.org
Verified
Preprint
Open access
PDF file
KEKei Endo
Kei Endo
Hidekatsu KurodaHidekatsu Kuroda
Hidekatsu Kuroda
JKJo Kanazawa
Jo Kanazawa
TSTakuro Sato
Takuro Sato
YFYudai Fujiwara
Yudai Fujiwara
YTYasuhiro Takikawa
Yasuhiro Takikawa
Although sarcopenia is characterized by a loss of muscle strength and skeletal muscle mass, few studies have evaluated the effect of muscle strength on hepatocellular carcinoma (HCC) patients. We separately evaluated the impact of sarcopenia-related factors (grip strength [GS] and the skeletal muscle index [SMI]) on the survival among lenvatinib-treated unresectable HCC (u-HCC) patients. This single-center cohort study was conducted at a university hospital. The study population included 63 lenvatinib-treated u-HCC patients managed between April 2018 and April 2020. A decreased GS and decreased SMI were found in 21 (33.3%) and 22 (34.9%) patients, respectively. The overall survival (OS) of the normal GS group was significantly higher than that of the decreased GS group, while that of the normal and decreased SMI groups did not differ markedly. There were no significant differences in the progression-free survival between the normal GS and decreased GS groups or the normal SMI and decreased SMI groups. A multivariate Cox proportional hazards model showed that ALBI2b (hazard ratio [HR] 4.39) and a decreased GS (HR 3.55) were independently associated with an increased risk of poor prognosis. In addition to the hepatic functional reserve, a decreased GS was a poor prognostic factor in lenvatinib-treated u-HCC patients.

1 May 2023 in Therapeutic Apheresis and Dialysis
Verified
Journal Article
Open access
AMAkio Miyasaka
Akio Miyasaka
YYYuichi Yoshida
Yuichi Yoshida
Akiko SuzukiAkiko Suzuki
Akiko Suzuki
KEKei Endo
Kei Endo
KKKeisuke Kakisaka
Keisuke Kakisaka
TMTakayuki Matsumoto
Takayuki Matsumoto
Introduction: The aim is to clarify the hepatitis C virus (HCV) status of hemodialysis (HD) patients and patient management after HCV elimination.Methods: Questionnaire survey was conducted in Iwate prefecture, Japan from 2016 to 2021.Results: Patients underwent HD was 2944, including 132 anti‐HCV antibody‐positive patients, with 91 HCV RNA‐positive patients. Of the 91 HCV RNA‐positive patients, 51 received antiviral treatment. Sustained virological response (SVR) rate was 94%. The patients treated with direct antiviral agents had significantly lower mortality rate than the untreated patients, and no liver‐related deaths occurred in patients who achieved SVR or in HCV RNA‐negative patients. The HCV RNA‐positive prevalence was finally 0.79%. Approximately 40% of the facilities had dedicated beds and dialysis‐related items for patients who achieved an SVR.Conclusion: To eliminate HCV in HD facilities, it is necessary to promote HCV RNA testing for anti‐HCV antibody‐positive patients and to provide antiviral treatment for HCV RNA‐positive patients. Additionally, collaboration among hepatologists and HD specialists are essential.

23 August 2025 in Hepatology Research
Verified
Journal Article
Closed access
KEKei Endo
Kei Endo
KKKeisuke Kakisaka
Keisuke Kakisaka
TATamami Abe
Tamami Abe
HAHiroaki Abe
Hiroaki Abe
INIppeki Nakaya
Ippeki Nakaya
TMTakayuki Matsumoto
Takayuki Matsumoto

15 July 2024 in Internal Medicine
Verified
Journal Article
Open access
PDF file
KKKotaro Kishimoto
Kotaro Kishimoto
KKKeisuke Kakisaka
Keisuke Kakisaka
TATamami Abe
Tamami Abe
AIAsami Ito
Asami Ito
KYKenji Yusa
Kenji Yusa
TMTakayuki Matsumoto
Takayuki Matsumoto
Prothrombin time (PT) is a key parameter for assessing the severity of liver disease. We present the case of a 37-year-old woman with severe acute liver injury due to autoimmune hepatitis. Although prednisolone drastically improved her hepatocyte function, her PT did not recover to the reference range. A review of her medical records revealed that the patient had normal transaminase levels and prolonged PT 2 years previously. Further examinations of her coagulopathy revealed that she had low factor VII activity, suggesting a diagnosis of factor VII deficiency. Our experience suggests that altered coagulopathy should be considered in cases of liver injury with an extraordinary PT.