Publications by authors named "HOSODA S"

Aim: Atezolizumab/bevacizumab is a first-line therapy for unresectable hepatocellular carcinoma (HCC). Among several adverse events, grade ≥2 proteinuria is considered a significant adverse event that may cause bevacizumab interruption. Studies have shown that proteinuria might predict improved prognosis, although data are scarce and the association remains controversial, and the mechanisms and predictive factors remain unclear.

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Background: Chemical bioproduction has attracted attention as a key technology in a decarbonized society. In computational design for chemical bioproduction, it is necessary to predict changes in metabolic fluxes when up-/down-regulating enzymatic reactions, that is, responses of the system to enzyme perturbations. Structural sensitivity analysis (SSA) was previously developed as a method to predict qualitative responses to enzyme perturbations on the basis of the structural information of the reaction network.

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Motivation: Antibiotic resistance has emerged as a major global health threat, with an increasing number of bacterial infections becoming difficult to treat. Predicting the underlying resistance mechanisms of antibiotic resistance genes (ARGs) is crucial for understanding and combating this problem. However, existing methods struggle to accurately predict resistance mechanisms for ARGs with low similarity to known sequences and lack sufficient interpretability of the prediction models.

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Background And Aims: The prognostic impact of previous-HBV-infection (pHBV) in non-HBV-related hepatocellular carcinoma (non-HBV-related-HCC) and the prevalence, characteristics and significance of recently developed high-sensitivity HBs antigen positivity (hHBsAg+) in these patients remain unclear. We aimed to close these gaps.

Methods: We retrospectively screened patients with newly diagnosed non-HBV-related-HCC (standard HBsAg-test negative) at Hokkaido University.

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Background: While guidelines recommend immune checkpoint inhibitor (ICI) rechallenge as second-line therapy for unresectable hepatocellular carcinoma (HCC), data supporting this remain limited, particularly regarding a standard regimen for first- and second-line treatments. Tremelimumab/durvalumab was recently approved but data on ICI rechallenge are lacking.

Objectives: The purpose of this study was to evaluate the early efficacy and safety of tremelimumab/durvalumab for HCC as an ICI rechallenge following initial ICI therapy with atezolizumab/bevacizumab.

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  • An isolated posterior capsule rupture (PCR) is a rare but serious complication typically found in traumatic cataracts, which we explored through three case studies of pediatric and adolescent patients who experienced blunt ocular trauma.
  • The cases included a 1.5-year-old boy with a white pupil after a fall, an 18-year-old boy with a cataract from an eye injury, and a 13-year-old boy who developed a cataract following hyphema from blunt trauma.
  • Treatment involved surgical intervention where intraocular lenses (IOLs) were successfully implanted, leading to vision improvement in all cases, showcasing the potential for effective management of such injuries.
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A sintered lunar regolith is expected to be used to construct buildings, roads, and landing pads for spacecrafts on the Moon. Here, we demonstrate that focused microwave heating is effective for the rapid solidification of the lunar regolith simulant to obtain regolith gravel without any microwave susceptor. The conventional multimode microwave oven cannot heat lunar regolith simulants and requires microwave susceptors such as silicon carbide (SiC) and thermal insulators because of its low dielectric loss.

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Meningeal carcinomatosis (MC) has an extremely poor prognosis and can present with various neurological symptoms. A 68-year-old man presented to our hospital with a 1 month history of headache and nausea followed by sudden decrease in vision in both eyes. Whilst being examined in the ophthalmology department he lost consciousness and had a generalised tonic clonic seizure.

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Recent advances in microbiome research have led to the further development of microbial interventions, such as probiotics and prebiotics, which are potential treatments for constipation. However, the effects of probiotics vary from person to person; therefore, the effectiveness of probiotics needs to be verified for each individual. Individuals showing significant effects of the target probiotic are called responders.

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  • - The study focused on the impact of muscle atrophy and high subcutaneous adipose tissue (SAT) radiodensity on prognosis in patients with hepatocellular carcinoma (HCC).
  • - In a retrospective analysis of 201 patients, it was found that those with muscle atrophy (33.3%) and high SAT radiodensity (12.9%) had significantly worse survival outcomes compared to those without these conditions.
  • - The findings suggest that recognizing patients with both muscle atrophy and high SAT radiodensity is crucial for developing targeted interventions, like nutritional therapy and exercise, to improve their health outcomes.
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  • * Mice were fed rice from both types of seeds for 4 weeks to see how it affected their health, but researchers found no negative effects on their organ weights or overall health.
  • * The results show that there are no harmful effects on the rice or on health when eating rice grown from plasma-irradiated seeds, even though the treated rice grew better.
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Ventricular septal perforation( VSP) after acute myocardial infarction( MI) is a serious condition that requires surgical treatment. However, good outcome is not always obtained. The mortality rate of VSP is particularly high in cases whom emergency surgery is performed early in the course of the disease, and the timing of surgery is known to affect prognosis.

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A 79-years-old frail man with severe combined valvular disease was referred to our hospital. Furthermore, chest computed tomography( CT) showed a saccular aneurysm in the aortic arch. We chose two staged repairs for risk reduction.

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  • Lenvatinib, a treatment for unresectable hepatocellular carcinoma (HCC), can lead to appetite loss, but the reasons and effects were previously unclear.
  • The study examined how changes in the hormone FGF21 during treatment relate to appetite changes in 63 HCC patients, measuring FGF21 levels at different times after starting lenvatinib.
  • Findings revealed that patients who experienced significant appetite loss had a notable increase in FGF21 levels after 4 weeks of treatment, suggesting that monitoring FGF21 could help predict which patients are at higher risk for appetite loss and better understand the treatment’s side effects.
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  • The study investigates the recent prevalence of hepatitis delta virus (HDV) infections among patients with hepatitis B virus (HBV) in Japan, as it has not been updated for over two decades.
  • Researchers screened 1,264 HBV patients at Hokkaido University Hospital, concluding that 1.7% had detectable anti-HDV antibodies.
  • The findings indicate that those with anti-HDV antibodies had a higher prevalence of liver cirrhosis and experienced faster progression of liver fibrosis, emphasizing the need for routine HDV testing in similar patients.
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  • Atezolizumab plus bevacizumab shows effectiveness in treating unresectable hepatocellular carcinoma (HCC), but about 20% of patients may experience progressive disease (PD) shortly after starting treatment, highlighting the need for early detection methods.
  • In a study, patients' serum was analyzed to identify biomarkers related to early PD; results indicated a significant difference in the cytokine CXCL9 levels between patients who developed early PD and those who did not.
  • Lower serum CXCL9 levels (<333 pg/mL) were found to be predictive of early PD, with patients with these lower levels experiencing shorter progression-free survival compared to those without early PD.
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Background: Acute kidney injury (AKI) is associated with liver cirrhosis (LC), water retention, diuretics to treat water retention, and a poor prognosis. Urinary neutrophil gelatinase-associated lipocalin (uNGAL) reportedly predicts a poor prognosis in decompensated LC. This study investigated the usefulness of uNGAL in predicting the short- and long-term effects of tolvaptan (TVP) and the incidence of AKI post-TVP administration.

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Aim: Hepatitis C virus (HCV) infection has been reported to cause liver steatosis. Thus, eradicating HCV with direct-acting antivirals (DAAs) is expected to reduce liver steatosis. We aimed to clarify long-term changes in the prevalence of fatty liver and hyper-low-density lipoprotein (LDL) cholesterolemia and their associations in patients who achieve successful HCV eradication using DAAs.

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Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies gradually experience an alteration in composition, structure and optical properties through a collective process called space weathering. The return of samples from near-Earth asteroid (162173) Ryugu by Hayabusa2 provides the first opportunity for laboratory study of space-weathering signatures on the most abundant type of inner solar system body: a C-type asteroid, composed of materials largely unchanged since the formation of the Solar System. Weathered Ryugu grains show areas of surface amorphization and partial melting of phyllosilicates, in which reduction from Fe to Fe and dehydration developed.

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  • The study explores the preventive effects of sodium ferrous citrate (SFC) and 5-aminolevulinic acid phosphate (ALA) on metabolic issues related to obesity and type 2 diabetes.
  • The experiment involved feeding male mice different diets for 15 weeks, revealing that SFC and ALA combined improved muscle strength, reduced obesity, and helped maintain normal mitochondrial function.
  • Results indicate that SFC and ALA supplementation could be a promising intervention for preventing metabolic disorders linked to obesity and type 2 diabetes by enhancing skeletal muscle and mitochondrial health.
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The Hayabusa2 spacecraft collected samples from the surface of the carbonaceous near-Earth asteroid (162173) Ryugu and brought them to Earth. The samples were expected to contain organic molecules, which record processes that occurred in the early Solar System. We analyzed organic molecules extracted from the Ryugu surface samples.

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Samples of the carbonaceous asteroid (162173) Ryugu were collected and brought to Earth by the Hayabusa2 spacecraft. We investigated the macromolecular organic matter in Ryugu samples and found that it contains aromatic and aliphatic carbon, ketone, and carboxyl functional groups. The spectroscopic features of the organic matter are consistent with those in chemically primitive carbonaceous chondrite meteorites that experienced parent-body aqueous alteration (reactions with liquid water).

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The possible mechanisms of resistance to atezolizumab/bevacizumab for unresectable HCC, and the subsequent response to these therapies, remain underexplored. The sequential changes in serum growth factors, including VEGF-A, VEGF-C, VEGF-D, ANG-2, FGF-19, HGF, and EGF during atezolizumab/bevacizumab for unresectable HCC were evaluated in 46 patients. Patients who experienced PD after CR, PR, or SD to atezolizumab/bevacizumab were evaluated.

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Progressive liver fibrosis after anti-HCV treatment is a risk factor for HCC. Angiopoietin-2 (Ang2) is associated with non-regression of liver fibrosis after direct-acting antiviral (DAA). This study evaluated the predictive value of serum Ang2 levels for HCC occurrence or recurrence after DAA administration.

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The purpose of this study is to investigate the thermo-oxidative degradation behavior of polypropylene (PP) by comparing three types of pristine PP granules (consisting of homopolymer, random copolymer, and block copolymer) with their corresponding oxidized analogues. These analogues were intensely oxidized under oxygen at 90 °C for 1000 h by using the electron spin resonance (ESR) spin trapping method that can detect short-lived radical intermediates during the degradation. The degrees of oxidation could be evaluated by chemiluminescence (CL) intensity, which was related to the concentration of hydroperoxide groups generated in the PP chain.

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