Publications by authors named "Kenji Fukushima"

Background/aim: Biliary tract cancers (BTCs) have poor prognoses, with limited curative options beyond surgical resection. Adjuvant S-1 chemotherapy has shown survival benefits in Japanese patients undergoing resection for BTC. However, prognostic factors influencing survival in these patients remain uncertain.

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Atezolizumab plus bevacizumab (AteBev) is used as a first-line treatment for advanced hepatocellular carcinoma (HCC). Combining AteBev with sequential local treatment holds potential; however, optimal timing, modality and continuation of systemic chemotherapy remain undetermined. In the present study, a retrospective analysis of 123 patients with HCC treated with AteBev at two institutions was performed.

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Objective: The objective of this study is to investigate the lumbar cerebrospinal fluid (CSF) movement using the modified Time-Spatial Inversion Pulse (Time-SLIP) method.

Materials And Methods: This single-case experimental study was approved by the institutional ethics committee. The participant was a healthy 42-year-old male volunteer who provided written informed consent.

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BackgroundThis study aimed to evaluate the impact of postoperative complications on early recurrence (ER) after pancreaticoduodenectomy (PD) for biliary tract cancer (BTC).MethodsPatients who underwent PD for BTC between 2009 and 2022 were enrolled in this study. Postoperative complications were assessed using the comprehensive complication index (CCI), calculated by summing all the complications.

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We establish thermodynamic stability and gauge invariance in the magnetovortical matter of Dirac fermions under the coexistent rotation and strong magnetic field. The corresponding partition function reveals that the orbital contribution to bulk thermodynamics preponderates over the conventional contribution from anomaly-related spin effects. This orbital preponderance macroscopically manifests itself in the sign inversion of the induced charge and current in the magnetovortical matter, and can be tested experimentally as the flip of the angular momentum polarization of magnetovortical matter when the magnetic field strength is increased.

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Introduction: Portal vein (PV) and splenic vein (SV) stenosis are known complications of pancreatoduodenectomy (PD) and often lead to portal hypertension. PV stenosis extending to the SV confluence can result in sinistral portal hypertension (SPH), characterized by gastrointestinal varices and splenomegaly in the presence of normal liver function. There is no standardized treatment strategy for SPH following PD.

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Salicylic acid (SA) is a major defense phytohormone. In , the isochorismate (IC) pathway is the primary route for pathogen-induced SA biosynthesis. First, the IC synthase (ICS) catalyzes the isomerization of chorismate to IC in chloroplasts.

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Objectives: Measurement of cerebral blood flow (CBF), cerebral blood volume (CBV), cerebral oxygen extraction fraction (OEF), and cerebral metabolic rate of oxygen (CMRO) by positron emission tomography (PET) with oxygen-15 labeled gases is widely used for investigation into the pathophysiology of occlusive cerebrovascular disease. However, all methods for quantification of CBF, CBV, OEF, and CMRO by PET with oxygen-15 labeled gases require invasive arterial blood sampling. The present study developed a reference region-based method for quantification of CBF, CBV, OEF, and CMRO using PET and oxygen-15 labeled gases based on the steady-state method without invasive arterial blood sampling.

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A 13-year-old girl presented with enlarging hepatocellular adenomas and a history of glycogen storage disease type Ia. Her liver function was well controlled by nutritional therapy. The options of resection and transplantation were considered, and the patient was successfully treated with laparoscopic liver resection.

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Purpose: The Global Leadership Initiative on Malnutrition (GLIM) criteria, proposed in 2018, provide universal diagnostic standards for malnutrition, a known risk factor for postoperative complications in patients with various cancers. However, its impact on surgery for biliary tract cancer (BTC) remains unclear. This study evaluates the relationship between GLIM-defined malnutrition and postoperative complications after resection for BTC.

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Despite a long-standing interest since Darwin's time, the genomic implications of obligate self-fertilization remain elusive. Complete cleistogamy-the obligate production of closed, self-pollinating flowers-represents an extreme reproductive strategy. Here, we present the genomic profiles and evolutionary history of two lineages of the mycoheterotrophic orchid , both of which independently acquired complete cleistogamy, based on detailed sampling and a combination of simple sequence repeat (SSR), multiplexed ISSR genotyping by sequencing (MIG-seq) and RNA-seq data.

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Paravalvular leakage (PVL) is a clinical concern in transcatheter aortic valve implantation (TAVI). Although PVL has been reported to gradually decrease after self-expandable valves (SEVs) implantation, the mechanism remains unclear. Furthermore, while gradual expansion of SEVs has been documented, studies assessing their morphological changes during the chronic phase are lacking.

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BackgroundAmyloid deposition manifests as thickening and calcification of the joints on computed tomography (CT) images.PurposeTo investigate the diagnostic potential of thickening and calcification of the shoulder and hip joints for the detection of transthyretin amyloid cardiomyopathy (ATTR-CM).Material and MethodsWe included 19 patients who had been assessed using Tc-pyrophosphate scintigraphy between January 2019 and December 2022 and diagnosed with ATTR-CM.

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Identifying the metabolic and genetic changes that confer evolutionary novelty is essential for understanding the factors facilitating or constraining the occurrence of traits. We show that dimethyl disulfide (DMDS), a volatile compound that attracts saprophilous pollinators, is produced by a disulfide synthase (DSS) in the plant genus (Aristolochiaceae). DSS is derived from methanethiol oxidase (MTOX), an enzyme conserved among animals and plants, and similar DSS enzymes have independently evolved in two other plant genera.

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Objective: To enhance amyloid-β (Aβ) positron emission tomography (PET) diagnostic accuracy and adjust for tracer differences, the amyloid-β load (Aβ) and centiloid (CL) scale were developed. However, the correlation and superiority of these indicators remain unclear. This study aimed to elucidate the correlation and determine cutoff values.

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Purpose: To investigate the impact of textbook outcome (TO) achievement on survival post-liver resection for hepatocellular carcinoma (HCC) and explore the associated factors.

Methods: We retrospectively reviewed 330 patients diagnosed with HCC who underwent initial liver resection at our hospital between January 2011 and December 2019. We also investigated the achievement rates of five TOs and sub-analyzed the relationship between them and malnutrition.

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Purpose: This study aimed to evaluate the utility of peritoneovenous shunt (PVS) placement for refractory ascites (RA) based on preoperative biomarkers.

Methods: This retrospective cohort study included patients with malignant and cirrhotic RA undergoing PVS placement treated at Sumoto Itsuki Hospital between January 2001 and March 2024. The efficacy of PVSs was defined according to the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE).

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Background: Partial pancreatectomies for intraductal papillary mucinous neoplasms (IPMN) often leave a dilated main pancreatic duct (MPD). However, its impact on the development of remnant pancreatic lesions is unknown.

Methods: Medical records of consecutive patients who underwent partial pancreatectomy for noninvasive or microinvasive IPMN with dilated MPD on preoperative imaging between April 2007 and March 2023 at two tertiary referral centers in Japan were retrospectively reviewed.

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Myocardial positron emission tomography (PET) is superior in detecting ischemia in patients with left main or multivessel disease, conditions that are challenging to assess using single-photon emission computed tomography (SPECT). Additionally, quantitative measurements of myocardial blood flow and myocardial flow reserve (MFR) have been established as significant prognostic indicators for patients with ischemic heart disease. Moreover, N-ammonia PET offers high temporal and spatial resolution, enabling the assessment of both left and right ventricular strain, a quantitative marker of regional myocardial wall motion.

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Purpose: This study aimed to simultaneously evaluate the association between diastolic left ventricular (LV) inflow and myocardial flow reserve (MFR) using a hybrid PET/MR system in patients with coronary artery disease (CAD).

Methods: Sixty-seven patients (mean 66 ± 15 years, male 55) with CAD who underwent rest-pharmacological stress N-ammonia PET/MR were included. MFR, perfusion defect, and peak filling rate (PFR) were obtained through rest-stress PET.

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Purpose: We aimed to investigate the differences in surgical difficulty between laparoscopic partial liver resections of segments 7 and 8.

Methods: We analyzed 173 patients who underwent partial liver resections of segments 7 or 8 between 2010 and 2022 at two institutions. We investigated differences in the surgical outcomes of each procedure using propensity score matching.

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Background: Leaf economics theory holds that physiological constraints to photosynthesis have a role in the coordinated evolution of multiple leaf traits, an idea that can be extended to carnivorous plants occupying a particular trait space that is constrained by key costs and benefits. Pitcher traps are modified leaves that may face steep photosynthetic costs: a high-volume, three-dimensional tubular structure may be less efficient than a flat lamina. While past research has investigated the photosynthetic costs of pitchers, the exact suite of constraints shaping pitcher trait variation remain under-explored, including constraints to carnivorous function.

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Aim: The oncological resectability criteria for hepatocellular carcinoma (HCC) have recently been established (R/BR1/BR2), and validating the outcomes is an urgent issue. This study aimed to analyze the outcomes of hepatectomy and systemic chemotherapy based on the oncological resectability criteria.

Methods: A total of 931 patients in the hepatectomy group and 273 in the systemic chemotherapy group who received atezolizumab/bevacizumab, lenvatinib, or durvalumab plus tremelimumab were recruited.

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A previously healthy 18-month-old boy presented with hepatomegaly, accompanied by liver injury. Imaging and liver biopsy findings suggested a hepatic glycogen storage disease (GSD) but not GSD type I. Genetic testing revealed a partial deletion of the PHKA2 gene, confirming the diagnosis of GSD type IXa.

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Objective: Dopamine transporter single-photon emission computed tomography (DAT-SPECT) plays an important role in diagnosing parkinsonism. Recently, a reference-based quantitative analysis utilizing a Japanese normal database for DAT-SPECT was developed. This study aimed to investigate the frequency and trends of cases wherein the analysis- and physician-based diagnoses diverged.

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