Masahito Shimizu

Masahito Shimizu
University Hospital Medical Information Network | UMIN · Department of Gastroenterology

About

429
Publications
42,759
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9,698
Citations
Citations since 2017
195 Research Items
5022 Citations
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201720182019202020212022202302004006008001,000
201720182019202020212022202302004006008001,000
Introduction
Skills and Expertise

Publications

Publications (429)
Article
A 63-year-old man with advanced pancreatic cancer and pyloric obstruction underwent surgical gastrojejunostomy. Malignant biliary obstruction appeared eight months after surgery and was managed with endoscopic ultrasound (EUS)-guided hepaticogastrostomy (HGS). Subsequently, afferent limb obstruction caused by cancer invasion occurred. Although an i...
Article
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Background: Both endoscopic nasogallbladder drainage (ENGBD) and endoscopic gallbladder stenting (EGBS) are effective management for acute cholecystitis, although ENGBD can cause discomfort due to its nature of external drainage. Converting ENGBD to EGBS after improvement of cholecystitis might be one treatment strategy. The drainage tube of ENGBD...
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In this study, we aimed to evaluate the efficacy and safety of atezolizumab plus bevacizumab (Atez/Bev) treatment for unresectable hepatocellular carcinoma (HCC) and to analyze the factors affecting overall survival (OS). A total of 69 patients who received Atez/Bev at our institutions for unresectable HCC were enrolled in this study. OS and progre...
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Circulating albumin structures, including their oxidized and reduced forms, are involved in hepatic encephalopathy (HE) development. However, the effects of rifaximin, a key drug in HE treatment, on the circulating albumin structure in patients with liver cirrhosis remain unclear. In this multicenter prospective study, eight patients with hyperammo...
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This phase II clinical trial aimed to evaluate the efficacy and safety of the combination therapy of bendamustine, cytarabine, and rituximab (BRAC) in patients with relapsed or refractory follicular lymphoma (FL) or mantle cell lymphoma (MCL). Thirteen patients were enrolled and received a median of 4 cycles (range 2–6) of BRAC. The complete respon...
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Aim Covert hepatic encephalopathy (CHE) adversely affects clinical outcomes in patients with liver cirrhosis, although its diagnosis is difficult. This study aimed to establish a simple CHE screening model based on blood-related biochemical parameters. Methods This retrospective study enrolled 439 patients who were assessed for CHE using a neurops...
Article
Aims: HBsAg loss with anti-HBs acquisition is considered a functional cure and ideal treatment goal for patients with CHB. Our group have reported the efficacy of therapeutic vaccine with HBsAg and HBcAg (NASVAC) by intranasal and subcutaneous injection. In this study, we investigated the safety and efficacy of newly developed CVP-NASVAC, which co...
Article
Background and aims Sludge occlusion is a primary reason for recurrent biliary obstruction (RBO) following self-expandable metallic stent (SEMS) placement. However, the efficacy of ursodeoxycholic acid (UDCA) for SEMS remains unexplored till date. This study aimed to evaluate the efficacy of UDCA following SEMS for malignant distal biliary obstruct...
Article
Aim: Cell-free and concentrated ascites reinfusion therapy (CART) and large-volume paracentesis (LVP) with albumin infusion are useful for managing refractory ascites (RA). However, it remains unclear which therapy is more effective in cirrhotic patients with RA. Methods: From June 2018 to March 2022, 25 patients with RA treated with CART or LVP...
Article
Muscle cramps are frequently overlooked and worsen the quality of life in patients with chronic liver disease (CLD). Therefore, a valuable biomarker for predicting muscle cramps is required in the clinical setting. This study aimed to investigate whether the serum Mac-2-binding protein glycosylation isomer (M2BPGi) levels, a reliable liver fibrosis...
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Modified FOLFIRINOX (mFFX) and Gemcitabine plus nab-paclitaxel (GnP) are effective first-line chemotherapies for unresectable advanced pancreatic cancer (APC); however, both lead to peripheral neuropathy (PN). Aims: To evaluate the impact of first-line mFFX-induced PN on the efficacy of second-line GnP in patients with APC. Methods: A database...
Article
Aim: We investigated whether an early-phase prothrombin time-international normalized ratio 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...
Article
Background Covert hepatic encephalopathy (CHE) adversely affects the clinical outcomes of patients with cirrhosis but remains largely undiagnosed and untreated. Although the Stroop test is a useful method for CHE detection, a faster, simpler, and more accurate test is required to diagnose CHE. This prospective study aimed to develop a new shortened...
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This study evaluated the factors that affect the recurrence of hepatocellular carcinoma (HCC) in hepatitis C virus (HCV)-positive patients, who had received curative treatment for initial HCC, using decision tree analysis in 111 curative cases. The enrolled patients were divided into three groups by the decision tree analysis as follows: Patients w...
Article
Aim: The Global Leadership Initiative on Malnutrition (GLIM) criteria, a newly developed global consensus around core diagnostic criteria for malnutrition, needs validation studies for the use in daily clinical settings. This study aimed to determine whether the GLIM criteria can predict sarcopenia and mortality in patients with chronic liver dise...
Article
A 76-year-old woman with advanced pancreatic cancer developed recurrent cholecystitis after covered self-expandable metal stent (CSEMS) placement. The cholecystitis was refractory to repeated percutaneous transhepatic gallbladder drainage (PTGBD). Cholecystography showed a patent cystic duct with right and cranial side bifurcation, which is indicat...
Article
Endoscopic management of biliary diseases in patients with surgically altered anatomy can be challenging because the altered anatomy makes it difficult to insert an endoscope into the biliary orifice. Even if insertion is feasible, the worse maneuverability of the endoscope and the restriction in available devices and techniques could complicate th...
Article
Background: l-Carnitine supplementation is effective in improving muscle cramps, hyperammonemia, and hepatic encephalopathy in patients with cirrhosis. However, limited evidence is available on the effect of l-carnitine supplementation on the survival of patients with cirrhosis. Methods: In this retrospective study, 674 patients with cirrhosis a...
Article
In 2018, the Intractable Hepato-Biliary Disease Study Group of Japan proposed that patients with cirrhosis and a Child-Pugh score of 5-9 be diagnosed as having ACLF if deterioration of liver function, defined by serum bilirubin level and prothrombin time, develops within 28 days after an acute insult. Disease severity would be classified into four...
Article
The Intractable Hepato‐Biliary Disease Study Group of Japan, sponsored by the Ministry of Health, Labor and Wealth, proposed in 2018 that patients with cirrhosis and a Child‐Pugh score of 5–9 should be diagnosed as having acute‐on‐chronic liver failure (ACLF) when a deterioration of liver function (“serum bilirubin level of 5.0 mg/dl or more” and “...
Article
A recent study revealed that d-mannose suppressed immunopathology in mouse models of autoimmune diabetes and airway inflammation and increased the proportion of regulatory T cells (Tregs) in mice. We investigated the effect of d-mannose on liver injury in murine autoimmune hepatitis (AIH) models induced by concanavalin A (ConA) and α-galactosylcera...
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The trabecular bone score (TBS), a surrogate measure of bone microarchitecture, provides complementary information to bone mineral density (BMD) in the assessment of osteoporotic fracture risk. This cross-sectional study aimed to determine whether TBS can identify patients with liver cirrhosis that are at risk of vertebral fractures. We enrolled 27...
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Video 1Endoscopic fenestration for benign complete anastomotic obstruction after rectal surgery.
Article
Controlling nutritional status (CONUT) calculated using the serum albumin concentration, total lymphocyte count, and total cholesterol, was developed as a screening tool for the early detection of undernutrition. In addition, CONUT has been reported to be a prognostic predictor of various malignancies. Aim To investigate the impact of CONUT in pat...
Article
Background: Direct-acting antiviral (DAA) therapy enables a high rate of sustained virologic response (SVR) in patients with hepatitis C virus associated cirrhosis. However, the impact of DAA therapy on liver-related events in patients with cirrhosis is unclear. Methods: A total of 350 patients with compensated and decompensated cirrhosis admini...
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Effects of changes in body composition during neoadjuvant chemotherapy (NAC) on perioperative complications and prognosis are unknown in patients with esophageal squamous cell carcinoma (ESCC). A total of 175 patients who underwent surgery for ESCC in our hospital between 2016 and 2019 were examined. The psoas muscle index (PMI) was calculated from...
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The controlling nutritional status (CONUT) score is a simplified nutritional index calculated from serum albumin, total cholesterol, and total lymphocyte count. This study evaluated the prognostic impact of the CONUT score on overall survival (OS) in patients with peripheral T-cell lymphoma (PTCL). A multicenter, retrospective cohort study includin...
Preprint
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Although liver diseases, including non-alcoholic steatohepatitis (NASH), are associated with skeletal muscle atrophy, the mechanism behind their association has not been fully elucidated. In this study, the effects of aging and NASH on the skeletal muscle and the interaction between the liver and muscle were investigated using a diet-induced NASH m...
Article
Background Expanding indications for neoadjuvant chemotherapy (NAC) for resectable pancreatic cancer prolong the period from diagnosis to surgery. In resectable pancreatic cancer with malignant biliary obstruction (MBO), the biliary drainage method without any biliary events is ideally required to safely perform NAC as planned. Plastic stents (PS)...
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Background The skin wound healing process is regulated by various cytokines, chemokines, and growth factors. Recent reports have demonstrated that spermine/spermidine (SPD) promote wound healing through urokinase-type plasminogen activator (uPA)/uPA receptor (uPAR) signaling in vitro. Here, we investigated whether the systemic and topical administr...
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Background Cancer chemotherapy usually improves clinical outcomes in patients with advanced pancreatic cancer (APC), but can also cause moderate-to-severe adverse events (AEs). We investigated the relationship between moderate-to-severe AEs and quality of life (QOL) in patients with APC who received outpatient chemotherapy. Methods We recruited AP...
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This study aimed to determine the risk factors for hepatocellular carcinoma in non-cirrhotic livers among viral hepatitis patients. A total of 333 HCC cases, including 69 hepatitis B virus (HBV)-related and 264 hepatitis C virus (HCV)-related, were divided into cirrhotic (Fibrosis-4 [FIB-4] index > 3.25) and non-cirrhotic groups (FIB-4 index ≤ 3.25...
Article
Background: The significance of the 2018 Japanese diagnostic criteria for acute-on-chronic liver failure (ACLF) has not yet been evaluated. Methods: A nationwide survey was performed for patients with ACLF occurring between 2017 and 2019. Cirrhotic patients with a Child-Pugh score of 5-9 were diagnosed as having ACLF when liver failure (serum bi...
Article
Oxidative stress serves an important role in carcinogenesis. The present study investigated the clinical significance of oxidative stress as a prognostic factor for diffuse large B-cell lymphoma (DLBCL). The participants comprised 55 consecutive patients with DLBCL. A commercially available derivatives of reactive oxygen metabolites (d-ROMs) test k...
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Previous studies have shown that phosphorylation of the retinoid X receptor-α (RXRα) is associated with the development of hepatocellular carcinoma (HCC). However, these findings were revealed using HCC cell lines that express phosphorylated-RXRα (p-RXRα) proteins; therefore, it remains unclear whether p-RXRα affects hepatocarcinogenesis in vivo. T...
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The aim of this study was to clarify risk factors for esophageal candidiasis (EC) in immunocompetent patients in a community hospital. 7736 patients who underwent esophagogastroduodenoscopy at our hospital from April 2012 to July 2018 were enrolled. The relationships between EC and the following factors: age, gender, body mass index, lifestyle, lif...
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Background: A pathological diagnosis of pancreatic cancer should be performed as much as possible to determine the appropriate treatment strategy, but priorities and algorithms for diagnostic methods have not yet been established. In recent years, the endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) has become the primary method of co...
Article
Background The JSGE/JSH guidelines for the management of patients with liver cirrhosis revised in 2020 recommends new strategies for nutritional assessment and intervention, although their usefulness in daily clinical practice is unclear.MethodsA total of 769 patients with cirrhosis were classified into low-, intermediate-, and high-risk groups acc...
Article
Sprue-like enteropathy associated with olmesartan is characterized by villous atrophy in the duodenum. We report the case of an 81-year-old woman diagnosed with olmesartan-associated sprue-like enteropathy with no villous atrophy in the duodenum. The patient had been taking olmesartan for 10 years and complained of diarrhea and weight loss. Despite...
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Background: Contrast-enhanced endoscopic ultrasound (CE-EUS) is useful for the differentiation of pancreatic tumors. Using deep learning for the segmentation and classification of pancreatic tumors might further improve the diagnostic capability of CE-EUS. Aims: The aim of this study was to evaluate the capability of deep learning for the automa...
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Diagnosing sarcopenia is challenging. This multicenter cross-sectional study aimed to evaluate the utility of the SARC-F score system for identifying sarcopenia in patients with chronic liver disease (CLD). We enrolled 717 patients from five participating centers who completed the SARC-F between November 2019 and March 2021. Sarcopenia was diagnose...
Article
Aim Patient adherence to oral 5-aminosalicylic acid (5-ASA) therapy is key for the induction and maintenance of remission in ulcerative colitis (UC). We conducted a questionnaire survey of meal habits among patients with UC to determine which meal habits influence adherence to oral 5-ASA regimens. Methods The anonymous questionnaire, including inf...
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Background and study aims Preoperative assessment of the superficial ductal spread (SDS) of perihilar cholangiocarcinoma (PCCA) is important for determining its resectability. A virtual endoscopic imaging method, magnetic resonance cholangioscopy (MRCS), wherein a three-dimensional image is created from magnetic resonance imaging (MRI) data, can ev...
Article
Background/aim: To clarify the risk of chemotherapy-induced nausea and vomiting (CINV) with GnP therapy, gemcitabine (GEM) plus nab-paclitaxel (nab-PTX), we compared CINV between GEM and GnP therapy. Patients and methods: Patients who had received an initial course of GEM and GnP therapy were enrolled. Primary endpoint was the incidence of nause...
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The first edition of the clinical practice guidelines for liver cirrhosis was published in 2010, and the second edition was published in 2015 by the Japanese Society of Gastroenterology (JSGE). The revised third edition was recently published in 2020. This version has become a joint guideline by the JSGE and the Japanese Society of Hepatology (JSH)...
Article
Full-text available
The first edition of the clinical practice guidelines for liver cirrhosis was published in 2010, and the second edition was published in 2015 by the Japanese Society of Gastroenterology (JSGE). The revised third edition was recently published in 2020. This version has become a joint guideline by the JSGE and the Japan Society of Hepatology (JSH). I...
Article
During endoscopic ultrasound-guided biliary drainage (EUS-BD), a combination of 19-gauge needles and 0.025-inch guidewires is generally used. However, 19-gauge needles have poor maneuverability because of their stiffness and rigidity and might have poor penetrability in non-dilated bile ducts because of their large bore. In contrast, the applicatio...
Article
Background: Handgrip strength (HGS) is a simple and convenient method to assess nutritional status in patients with cirrhosis. This retrospective study aimed to investigate the utility of HGS for predicting patients with covert hepatic encephalopathy (CHE) and patients at high risk of overt hepatic encephalopathy (OHE). Methods: We reviewed 963...
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Pancreatic cancer is one of the most lethal cancers. To improve its prognosis, conversion surgery for initially unresectable advanced pancreatic cancer (UAPC) after chemotherapy has been reported in recent years. Methods: A retrospective analysis of the patients with initially UAPC underwent conversion surgery after the first-line modified FOLFIR...
Article
Background/aim: Cancer-derived exosomes play an important role in metastasis. In the present study, we determined whether exosome transfer between cancer cells is associated with metastasis in a mouse model. Materials and methods: AsPC-1 human pancreatic-cancer cells expressing red fluorescent protein (RFP) and AsPC-1 human pancreatic-cancer cel...
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Cancer arises from the accumulation of genetic and epigenetic alterations. Even in the era of precision oncology, carcinogens contributing to neoplastic process are still an important focus of research. Comprehensive genomic analyses have revealed various combinations of base substitutions, referred to as the mutational signatures, in cancer. Each...
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Although intraductal papillary mucinous neoplasm (IPMN) is thought to be a precursor lesion of pancreatic cancer, diagnosing malignant transformation of IPMN using non-invasive diagnostic methods is difficult and complicated. Micro-RNAs (miRNAs) are currently recognized as biomarkers and molecular targets of various diseases, including malignancy....
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Prostaglandin E2 receptor EP4 is involved in inflammation and related tumorigenesis in the colorectum. This study aimed to investigate the chemopreventive ability of RQ-15986, a selective EP4 antagonist, in colitis-related colorectal tumorigenesis. Male Kyoto APC delta rats, which have APC mutations, were treated with azoxymethane and dextran sulfa...
Preprint
Full-text available
Background: In pancreatic cancer clinical practice guideline 2016, it is recommended to perform pathological diagnosis as much as possible, but priorities and algorithms for diagnostic methods have not yet been established. In recent years, EUS-FNA has become mainstream as a method of collecting tissues from pancreatic disease, but the effect of EU...
Article
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Background Subjective global assessment (SGA) and Royal Free Hospital‐global assessment (RFH‐GA) are clinically useful for assessing malnutrition. This study aimed to investigate the relationship between sarcopenia, which predicts poor clinical outcomes in patients with chronic liver disease (CLD), and these two methods. Methods This retrospective...
Preprint
Full-text available
The controlling nutritional status (CONUT) is a simplified nutritional index calculated from serum albumin, total cholesterol, and the total lymphocyte count. Although the CONUT score is an independent prognostic factor in several hematological malignancies, the prognostic impact of the CONUT score in peripheral T-cell lymphoma (PTCL) is unclear. T...
Article
Objective: Lenvatinib is an oral multitarget tyrosine kinase inhibitor (mTKI) and is recommended for patients with advanced hepatocellular carcinoma (HCC) with Child-Pugh A liver function, who are not amenable to surgical resection, locoregional treatment, or transcatheter arterial chemoembolization. Hepatogastric fistula is a rare complication wit...
Article
Endoscopic transpapillary gallbladder drainage (EGBD) has been reported as an effective gallbladder drainage treatment option for acute cholecystitis in high‐risk surgical patients. However, the long‐term outcomes such as cholecystitis’ recurrence rate after placement of EGB stenting (EGBS) have not been well studied yet. Aims The aim of the prese...
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We investigated the factors affecting recurrence-free survival in patients with non-B non-C hepatocellular carcinoma (HCC) who received curative treatment. Decision-tree analysis was performed in 72 curative cases of non-B non-C HCC to extract the risk factors for recurrence. The reliability of the extracted risk factors was evaluated using the Kap...
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IntroductionImage evaluation of contrast-enhanced harmonic endoscopic ultrasound (CEH-EUS) and additional time-intensity curve (TIC) analysis enable qualitative and quantitative analyses of pancreatic tumor based on real-time perfusion imaging.AimsTo evaluate the efficacy of CEH-EUS with a combination of qualitative and quantitative analyses of pan...
Article
The efficacy of neoadjuvant chemotherapy (NAC) has been reported and the importance of preoperative biliary drainage for safe administration of NAC has been shown. Recently, self-expandable metallic stents (SEMS) tend to be chosen because of longer stent patency, but there are many problems that are still unresolved. Preoperative biliary drainage s...
Article
Aim Despite its relevant clinical impact and high prevalence, covert hepatic encephalopathy (HE) still remains underdiagnosed. As patients with liver cirrhosis tend to be older in Japan, more suitable test for the elderly and cut‐off values based on this attribute are needed. Recently, a Stroop test has been developed and validated for the screenin...
Article
Full-text available
FXR is a member of the nuclear receptor superfamily and bile acids are endogenous ligands of FXR. FXR activation has recently been reported to inhibit intestinal inflammation and tumour development. This study aimed to investigate whether the novel FXR agonist nelumal A, the active compound of the plant Ligularia nelumbifolia , can prevent colitis...
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Introduction: Endoscopic submucosal dissection (ESD) is an effective treatment for gastric neoplasms in elderly patients; however, it involves several adverse events, including pneumonia. This study aimed to investigate whether skeletal muscle depletion (SMD) was associated with the development of pneumonia in elderly patients who underwent gastri...