Publications by authors named "Seiichi Mawatari"

Aim: Fontan-associated liver disease (FALD) is common after the Fontan procedure; however, no established non-invasive screening method exists. We aimed to evaluate the utility of transient elastography (TE) for FALD and identify clinical predictors of increased liver stiffness in post-Fontan patients.

Methods: This was a single-center retrospective study of 37 adult patients (≥18 years) who had undergone Fontan procedure and received TE during routine follow-up between February 2019 and June 2024 at Kagoshima University Hospital in Kagoshima, Japan.

View Article and Find Full Text PDF

Aim: We investigated the usefulness of serum CXCL10 levels for predicting prognosis in hepatitis C virus (HCV)-infected patients with compensated and decompensated cirrhosis (cLC and dLC) after direct-acting antiviral (DAA) therapy.

Methods: This nationwide multicenter study enrolled 212 HCV-associated LC patients, consisting of 113 cLC and 99 dLC patients, receiving DAA therapy, who had preserved serum samples. Serum CXCL10 levels were measured at pretreatment (pre-CXCL10) and posttreatment (12 or 24 weeks after the end of treatment: EOT12W or EOT24W) (post-CXCL10).

View Article and Find Full Text PDF

Background: Direct-acting-antivirals (DAAs) achieve high sustained-virologic response (SVR) rates, even in patients with hepatitis C virus (HCV)-related decompensated liver cirrhosis (LC). However, predictors of post-treatment liver function improvement and survival remain unclear. This study evaluated pretreatment angiopoietin-2 (Ang2) levels as a predictor of prognosis and liver functional reserve after DAA treatment.

View Article and Find Full Text PDF

Aim: Liver cirrhosis is a severe condition that often progresses to the decompensated phase, highlighting the global urgency for the development of antifibrotic agents. Hepatocyte growth factor (HGF) strongly promotes liver regeneration and attenuates fibrosis. However, HGF has not been clinically applied to treat patients with liver cirrhosis.

View Article and Find Full Text PDF

Background And Aim: This study aimed to compare the therapeutic effects and safety of lenvatinib (LEN) plus transcatheter arterial chemoembolization (LEN-TACE) and atezolizumab plus bevacizumab (Atez/Bev) as the first-line therapies in patients with intermediate-stage hepatocellular carcinoma (HCC) beyond the up-to-seven criteria.

Methods: We enrolled 768 patients with HCC treated with first-line systemic therapy, and 154 patients were enrolled and categorized into either the LEN-TACE therapy (n = 42) or Atez/Bev (n = 112) groups. After propensity score matching (PSM), 72 patients (LEN-TACE group, n = 36; Atez/Bev group, n = 36) were analyzed.

View Article and Find Full Text PDF

A 65-year-old woman was diagnosed with hepatocellular carcinoma (HCC) in February 20XX-1. Following three cycles of transarterial chemoembolization (TACE) for recurrent HCC, combination therapy with atezolizumab and bevacizumab (Atezo+Beva) was initiated in February Y, 20XX. Eight days after treatment initiation (Y+8), the patient developed a fever and generalized malaise.

View Article and Find Full Text PDF

Lenvatinib is a tyrosine kinase inhibitor that effectively inhibits vascular endothelial growth factor signaling and is used for treating hepatocellular carcinoma. However, angiogenesis inhibitors often cause hypertension. Although lenvatinib-induced hypertension has been proposed as a potential surrogate marker for better prognosis, studies on blood pressure elevations and outcomes following lenvatinib initiation are limited.

View Article and Find Full Text PDF
Article Synopsis
  • Resistance-associated substitutions (RASs) in hepatitis C virus (HCV) can significantly reduce the effectiveness of direct-acting antivirals (DAAs), particularly in patients experiencing treatment failure.
  • In a study using a subgenomic replicon system, specific RASs were found to have extremely high levels of resistance to several DAAs, showcasing the varying degrees of resistance among different mutations.
  • The research indicates that combining pibrentasvir with sofosbuvir may effectively treat HCV infections with these resistance mutations, potentially leading to successful eradication.
View Article and Find Full Text PDF
Article Synopsis
  • Abdominal angiography techniques like transarterial chemoembolization (TACE) are vital for treating liver cancer, but traditional transfemoral access (TFA) can lead to issues like postoperative pain and extended bed rest, impacting patient satisfaction.
  • A study involving 1,601 patients showed that using transradial access (TRA) for TACE achieved a high success rate of 99.4% and a low complication rate of 1.2%, with 98.2% of patients wanting the radial method for future treatments.
  • TRA is shown to be a safe and effective alternative to TFA for abdominal angiography, potentially easing the patient experience and improving clinical outcomes.
View Article and Find Full Text PDF
Article Synopsis
  • GPNMB, a protein expressed in macrophages, is linked to liver recovery following acute liver injury (ALI) in mice and is studied for its role in human ALI and acute liver failure (ALF).
  • The study assessed serum GPNMB levels over time in 56 ALI/ALF patients, revealing higher GPNMB levels associated with severe conditions like hepatic encephalopathy and adverse outcomes such as liver transplantation or death.
  • Findings suggest that elevated serum and liver GPNMB correlate with liver injury severity and prognosis, with GPNMB-positive macrophages presenting an immunosuppressive M2c phenotype, highlighting its potential as a prognostic marker for ALI and ALF patients.
View Article and Find Full Text PDF

Aim: To determine risk factors associated with hepatocellular carcinoma (HCC) development following direct-acting antiviral (DAA) therapy.

Methods: We enrolled patients with chronic hepatitis C who underwent direct-acting antiviral therapy and achieved sustained virologic response at 12 weeks between 2012 and 2018. Subsequently, patients were followed up.

View Article and Find Full Text PDF

Background: The rate of metachronous recurrence after endoscopic submucosal dissection for early-stage esophageal squamous cell carcinoma and hypopharynx squamous cell carcinoma is as high (10-15%). The acetaldehyde breath test may detect acetaldehyde dehydrogenase 2 gene polymorphisms. Therefore, we evaluated its usefulness in assessing metachronous recurrence in patients with esophageal squamous cell carcinoma and hypopharynx squamous cell carcinoma.

View Article and Find Full Text PDF

Chronic kidney disease (CKD) is a risk factor for end-stage renal disease and contributes to increased risk of cardiovascular disease morbidity and mortality. We aimed to develop a risk prediction score and equation for future CKD using health checkup data. This study included 58,423 Japanese participants aged 30-69 years, who were randomly assigned to derivation and validation cohorts at a ratio of 2:1.

View Article and Find Full Text PDF
Article Synopsis
  • An 87-year-old man was admitted to the hospital with black stool, anemia, and multiple gastric ulcers, and his condition worsened, leading to a diagnosis of acute liver failure (ALF) with hepatic coma.
  • Laboratory tests indicated high liver enzyme levels, elevated inflammation markers, and signs of a potential hematologic tumor.
  • Despite efforts for treatment, the man passed away three days later; autopsy revealed aggressive natural killer-cell leukemia (ANKL) as the underlying cause.
View Article and Find Full Text PDF

The present study clarified the prognosis of intermediate-stage hepatocellular carcinoma (HCC) patients who received lenvatinib (LEN) followed by transcatheter arterial chemoembolization (TACE) on demand. We retrospectively evaluated 88 intermediate-stage HCC patients who received LEN. The median age was 74 (range: 47-92) years old, 67 patients were male, and 82 were classified as Child-Pugh A.

View Article and Find Full Text PDF

We treated a case of gastroesophageal varices due to decompensated liver cirrhosis associated with Wilson's disease. The varicose veins penetrated the paraesophageal vein. We performed endoscopic variceal ligation (EVL) on the perforating vein and endoscopic injection sclerotherapy distally.

View Article and Find Full Text PDF

Aim: We investigated whether an early-phase prothrombin time-international normalized ratio (PT-INR) is an interventional prognostic indicator for patients with acute liver injury, including acute liver failure.

Methods: This was a multicenter retrospective observational study. We included 595 patients with alanine aminotransferase levels ≥300 U/L due to acute liver injury who were admitted to Kagoshima University Hospital or other collaborative investigation organizations between January 1, 2010, and December 31, 2015.

View Article and Find Full Text PDF
Article Synopsis
  • This study compares the effectiveness and safety of Atezolizumab plus Bevacizumab (ATEZO/BEVA) versus Lenvatinib (LEN) as first-line treatments for hepatocellular carcinoma (HCC).
  • A total of 810 patients were analyzed, and after matching for comparable characteristics, the results showed no significant difference in objective response rates (44.8% for ATEZO/BEVA vs. 46.7% for LEN), but ATEZO/BEVA had better progression-free survival and overall survival rates.
  • ATEZO/BEVA also had lower rates of severe side effects like appetite loss and fatigue, but a higher rate of severe bleeding, and showed a better conversion
View Article and Find Full Text PDF

A 44-year-old woman presented with cough, facial edema, and progressive fatigue. Computed tomography (CT) showed an anterior mediastinal mass, and laboratory findings showed liver injury. She was diagnosed with thymoma and scheduled for thymectomy after radiation and chemotherapy.

View Article and Find Full Text PDF
Article Synopsis
  • The study analyzed 20,547 cases of hepatocellular carcinoma (HCC) over 24 years, focusing on trends in sex, age, and disease causes, divided into four 6-year periods.
  • The data revealed that a significant majority (68.2%) of HCC patients were male, with the average age of newly-diagnosed patients increasing over time, particularly in the elderly population.
  • HCC cases associated with hepatitis C virus (HCV) declined, while cases with non-B viral causes and hepatitis B virus (HBV) infections rose, indicating a shift in the epidemiological profile of HCC patients.
View Article and Find Full Text PDF

The prevalence of non-alcoholic fatty liver disease (NAFLD) is continuously increasing, with the proportion of patients with liver carcinogenesis due to non-alcoholic steatohepatitis (NASH) rising accordingly. Although it is important to identify individuals with hepatic carcinogenesis among patients with NAFLD, useful biomarkers have not yet been established. Previously, in a mouse model of diabetes mellitus without genetic modifications, we reported that a high-fat diet increases serine palmitoyltransferase long chain subunit 3 (SPTLC3) expression in liver tissue, accompanied by high frequency of liver carcinogenesis.

View Article and Find Full Text PDF

Background: The features of hepatitis C virus patients with a sustained virologic response (SVR) who developed hepatocellular carcinoma (HCC) after direct-acting antiviral (DAA) therapy are unclear.

Methods: The study population included 1494 DAA-SVR patients without a history of HCC. The cumulative carcinogenesis rate after the end of treatment (EOT) and factors related to HCC were analyzed.

View Article and Find Full Text PDF

Highly sensitive agglutinin-reactive fraction of α-fetoprotein (hs-AFP-L3) is a specific marker for hepatocellular carcinoma (HCC) and has been reliable in cases with a low serum α-fetoprotein (AFP) level. However, the biomarkers that contribute to hepatocarcinogenesis during the long-term observation are not yet clear. The present study reported the clinical utility of hs-AFP-L3 in the long-term observation of patients with chronic liver disease.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the relationship between the copy number variations (CNVs) of the DEFA1A3 gene, which encodes human neutrophil peptides associated with immunity, and the severity of ulcerative colitis (UC) in 165 patients.* -
  • Findings revealed a significant correlation between high DEFA1A3 CNV and greater UC severity, indicated by higher Mayo scores and white blood cell counts, suggesting that higher CNV is an independent risk factor for severe UC.* -
  • The research concluded that DEFA1A3 CNV may serve as a new marker for UC severity and potentially offer a target for future therapies, as patients with higher CNV had significantly increased levels of HNP after neutrophil
View Article and Find Full Text PDF

Aim: Qualitative body composition (BC) change, characterized by the combination of visceral fat gain and muscle loss, is drawing attention as a risk factor for fatty liver (FL). The present study aimed to describe trends in BC change and its association with FL in the Japanese population.

Methods: Data from medical checkups carried out on 56 639 Japanese participants every 5 years from 1997 to 2017 were analyzed.

View Article and Find Full Text PDF