Publications by authors named "Mita K"

Bt has been applied as a gene source for insect-resistant transgenic crops, which represents efficient control of insect pests. In this study, we evaluated the pesticidal specificity of one Bt maize strain, DBN9936, that expresses Cry1Ab protein in larvae. The results showed that this Bt maize is active against the younger larvae while causing a sublethal effect on older larvae.

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We aimed to develop an AI model that recognizes and displays loose connective tissue as a dissectable layer in real-time during gastrointestinal surgery and to evaluate its performance, including feasibility for clinical application. Training data were created under the supervision of gastrointestinal surgeons. Test images and videos were randomly sampled and model performance was evaluated visually by 10 external gastrointestinal surgeons.

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Purpose: In laparoscopic inguinal hernia surgery, proper recognition of loose connective tissue, nerves, vas deferens, and microvessels is important to prevent postoperative complications, such as recurrence, pain, sexual dysfunction, and bleeding. EUREKA (Anaut Inc., Tokyo, Japan) is a system that uses artificial intelligence (AI) for anatomical recognition.

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Genome sequences contain the fundamental genetic information that largely determines the biology of a species. Over the past 20 years, advancements in high-throughput sequencing technologies and bioinformatics tools have matured, facilitating genome assembly and ushering in the telomere-to-telomere (T2T) era. is renowned as a silk-producing insect and serves as an important model organism extensively studied across various fields of biology.

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Background: A head-to-head comparison between enzalutamide (ENZ) and abiraterone plus prednisolone (ABI) revealed similar survival benefits for castration-resistant prostate cancer (CRPC) in the ENABLE study for PCa. Considering that a dose reduction of ENZ and ABI has demonstrated sufficient inhibitory ability of androgen receptor (AR) signaling, we analyzed the efficacy of modified doses of these agents in the ENABLE study for PCa.

Methods: This investigator-initiated, multicenter, randomized controlled trial that was conducted in Japan analyzed the prespecified survival endpoints, prostate-specific antigen (PSA) response rate ( ≥50% decline from baseline), and safety profile in patients treated with modified doses (ENZ ≤ 120 mg/day, ABI ≤ 750 mg/day) compared with those treated with a standard dose (ENZ 160 mg/day, ABI 1000 mg/day) as a starting dose.

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We report here a case of postoperative recurrent adenosquamous carcinoma (ASC) of the esophagogastric junction (EGJ) treated with S-1 therapy. A 79-year-old woman was diagnosed with carcinoma of the EGJ. Thoracoscopic subtotal esophagectomy was performed, and pathological examination revealed advanced ASC with lymph node metastasis.

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Waldiomycin is an inhibitor of histidine kinases (HKs). Although most HK inhibitors target the ATP-binding region, waldiomycin binds to the intracellular dimerization domain (DHp domain) with its naphthoquinone moiety presumed to interact with the conserved H-box region. To further develop inhibitors targeting the H-box, various 2-aminonaphthoquinones with cyclic, aliphatic, or aromatic amino groups and naphtho [2,3-d] isoxazole-4,9-diones were synthesized.

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Immune checkpoint blockade therapies are widely used for cancer treatment, including advanced renal cell carcinoma (RCC). This study aimed to investigate the impact of zygosity in HLA genes and individual HLA genotypes on the efficacy of an anti-PD-1 Ab, nivolumab, in treating advanced RCC. Patient enrollment was conducted across 23 institutions in Japan from August 19, 2019, to September 30, 2020, with follow-up concluding on March 31, 2021.

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Article Synopsis
  • The study analyzed antimicrobial susceptibility patterns of 793 bacterial strains from patients with complicated urinary tract infections across eight species, using national surveillance data collected in Japan from July 2020 to December 2021.
  • Fluoroquinolone resistance, particularly among Escherichia coli and Pseudomonas aeruginosa, has risen over the years, with levofloxacin resistance in E. coli increasing from 28.6% in 2008 to 44.5% in 2021, while MRSA vancomycin susceptibility decreased significantly.
  • Extended-spectrum β-lactamase-producing strains were identified in notable proportions, with E. coli (24.8%) and Klebsiella pneumoniae (16
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Aim: This study aimed to evaluate the risk classification system using the detailed positive surgical margin (PSM) status to predict biochemical recurrence (BCR) after robot-assisted radical prostatectomy (RARP).

Methods: We retrospectively analyzed 427 patients who underwent RARP between January 2016 and March 2020. We investigated risk factors for BCR using univariate and multivariate Cox proportional hazard regression models.

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Article Synopsis
  • - The study compares the effectiveness of enzalutamide (ENZ) and abiraterone plus prednisolone (ABI) in treating nonmetastatic castration-resistant prostate cancer (CRPC) through a randomized controlled trial conducted in Japan.
  • - Results showed no significant differences in prostate-specific antigen (PSA) response rates and overall survival between ENZ (80%) and ABI (64%) groups, indicating both treatments have similar efficacy.
  • - The safety profiles were also comparable, with few patients experiencing serious adverse events, suggesting both ENZ and ABI are viable first-line treatment options for nonmetastatic CRPC.
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Background: Cry1Ab has emerged as a bio-insecticide to control Spodoptera litura (Lepidoptera: Noctuidae). However, the sublethal effects of Cry1Ab on the physiological changes and molecular level of S. litura have not been well documented.

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Article Synopsis
  • The study investigates how the timing of nivolumab treatment affects its effectiveness in patients with metastatic renal cell carcinoma.
  • Researchers analyzed data from 58 patients, comparing those who received nivolumab as a second-line treatment to those who received it later on.
  • Results indicate that patients receiving nivolumab as second-line therapy experienced better outcomes, such as lower rates of disease progression and longer progression-free survival compared to those treated later.
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A 79-year-old man was diagnosed with esophagogastric junction adenocarcinoma, cT3N3M0, cStage Ⅲ, including enlarged lymph node metastases(Bulky N)in the middle mediastinum and intraperitoneal. A total of 2 cycles of S-1 plus oxaliplatin(SOX)was administered. After neoadjuvant chemotherapy, the primary tumor and enlarged lymph nodes had greatly decreased in size.

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Valvular heart disease (VHD) occurs when there is a functional impairment in the valvular apparatus that either obstructs or regurgitates the backflow of blood. When a microorganism resides in those valves, it injures the leaflets and causes complications such as thromboembolic events. Infective endocarditis (IE), usually caused by the Staphylococci and Streptococcus group, is a disease that occurs on the heart valves.

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Background: This study is part of the SNPs in Nivolumab PD-1 inhibitor for RCC (SNiP-RCC). Here we aimed to reveal clinical factors for tumor response, progression, and survival in nivolumab for advanced clear cell renal cell carcinoma (RCC) in Japanese patients.

Methods: We included patients from 23 institutions in Japan.

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We have performed a powder neutron diffraction study on CsO, where the unpaired electron withs=1/2in theπ∗orbital of the O2-ion is responsible for the magnetism. The magnetic reflections 0120 and 0121 were observed below the Néel temperature of about 10 K. An antiferromagnetic structure with a propagation vector of (0,12, 0) and magnetic moments parallel to the-axis is the most plausible.

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Article Synopsis
  • Anti-PD-1 antibodies like nivolumab are used to treat advanced renal cell carcinoma (RCC), but patient responses vary, leading to this study aimed at finding genetic markers that could predict treatment outcomes.
  • The study involved patient enrollment across 23 institutions in Japan, with a focus on analyzing specific genetic variations (SNPs) in genes related to immune response after nivolumab treatment.
  • Key findings indicated that SNPs in the FARP1 and PDCD1LG2 genes were linked to better treatment responses and progression-free survival, suggesting these genetic markers could help tailor personalized cancer therapies.
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Objective: To evaluate the significance of both low and high body mass index (BMI) as a biomarker in first-line tyrosine kinase inhibitors (TKIs) for metastatic renal cell carcinoma (mRCC).

Methods: The oncological outcome of 235 patients with mRCC treated with TKI from 2007 to 2018 was reviewed retrospectively. All patients received first-line TKI as therapy.

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Background: The repeated-dose liver micronucleus (RDLMN) assay has been well-developed and applied because of its simplicity and the ease of integration into general toxicity studies which is the preferred method from the 3R's point of view. In this assay, we observed micronucleated hepatocytes which accumulated during a rather long-term dosing period. When considering integration into general toxicity studies, the effects of age of the animals used in the micronucleus assay becomes a major issue.

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Purpose: Vaccination is an essential strategy to prevent infection in the SARS-CoV-2 pandemic. However, there are concerns about vaccine efficacy and the impact of vaccination on cancer treatment. Additionally, the emergence of novel variants may affect vaccination efficacy.

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Introduction And Objectives: Intermediate risk group of the International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) criteria is thought to consist of patients with different prognoses. This study investigated the impact of a pretreated modified Glasgow prognostic score (mGPS), which is defined on the basis of the pretreated serum albumin and C-reactive protein level, on predicting the prognosis of patients with metastatic renal cell carcinoma (mRCC) and its usefulness for the re-stratification of patients into a more improved risk model.

Materials And Methods: One hundred ninety-six mRCC patients treated with first-line tyrosine kinase inhibitor (TKI) were retrospectively investigated.

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Background: Enzalutamide (ENZ) and abiraterone plus prednisolone (ABI) improve survival in castration-resistant prostate cancer (CRPC). However, which agent is better for patients with CRPC remains unclear.

Objective: To evaluate whether ENZ or ABI is better as first-line treatment for CRPC.

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Article Synopsis
  • - The study aimed to identify prognostic factors and create a model for patients with metastatic renal cell carcinoma (mRCC) who underwent upfront cytoreductive nephrectomy (CN) while treated with immune checkpoint inhibitors (ICI) and/or tyrosine kinase inhibitors (TKI).
  • - A total of 211 mRCC patients were analyzed, with 117 undergoing upfront CN and 94 receiving initial systemic therapy; the study found that the upfront CN group had significantly better overall survival and various favorable characteristics compared to the non-upfront CN group.
  • - Factors such as multiple metastatic organs and a Karnofsky performance status (KPS) below 80% were identified as independent predictors of overall survival, with the
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Purpose: The objective of this study was to compare perioperative outcomes and total and split renal function between laparoscopic partial nephrectomy (LPN) and robot-assisted partial nephrectomy (RAPN). Predictive risk factors of preservation of operated renal function were also assessed.

Methods: We retrospectively analyzed 173 patients who underwent LPN (n = 84) or RAPN (n = 89) between 2010 and 2020.

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