Publications by authors named "Isono M"

Background/aim: HyperArc (HA) is an automated planning technique enabling single-isocenter brain stereotactic radiotherapy (SRT); however, dosimetric outcomes may be influenced by the planner's expertise. This study aimed to assess the impact of institutional experience on the plan quality of HA-SRT for both single and multiple brain metastases.

Materials And Methods: Twenty patients who underwent HA-SRT for single metastasis between 2020 and 2021 comprised the earlier group, while those treated between 2022 and 2024 constituted the later group.

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DNA double-strand breaks (DSBs) trigger the recruitment of repair protein and promote signal transduction through posttranslational modifications such as phosphorylation. After DSB induction, ataxia telangiectasia mutated (ATM) phosphorylates H2AX on chromatin surrounds the mega-base pairs proximal to the DSBs. Advanced super-resolution microscopic technology has demonstrated the formation of γH2AX nano foci as a unit of nano domain comprised of multiple nucleosomes.

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Background: Coronavirus disease 2019 caused significant negative damage to the health status of populations and health systems globally. In Uganda, our previous study revealed that the strict Public Health and Social measures (PHSMs) and the closure of Entebbe Regional Referral Hospital (ERRH) led to missed healthcare access among the citizens in the Entebbe municipality. Limited studies, however, exist on the impact of the response measures on the local health systems.

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Article Synopsis
  • Several African governments, including the DRC, implemented strict COVID-19 health measures that likely lowered infection rates, but information on public knowledge and adherence is limited.
  • This study surveyed 1,269 adults in Matadi using a structured questionnaire to evaluate their knowledge, perception, attitudes, and practices related to COVID-19 precautions, as well as factors influencing these aspects.
  • Results showed that while 76.5% of respondents had good knowledge of preventive measures, only 40% demonstrated a positive attitude, and just 5.8% practiced the measures effectively, highlighting significant gaps in adherence.
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Purpose: Recent radiation therapy (RT), such as intensity modulated radiation therapy and particle RT, has improved the concentration of the radiation field targeting tumors. However, severe adverse effects still occur, possibly due to genetic factors in patients. We aimed to investigate the mechanism of exacerbated inflammation during RT.

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  • The study investigates how self-expandable metallic stents (SEMSs) affect radiation doses compared to plastic stents (PSs) during biliary decompression, using a water-equivalent phantom for evaluation.
  • Results show that SEMSs generally cause smaller dose differences in radiation delivery compared to PSs, particularly in proximal and distal locations, which is statistically significant.
  • However, significant dose variations were noted at the surfaces of the radiopaque markers on SEMSs, suggesting that while SEMSs can be used safely in patients undergoing radiation therapy, careful monitoring of dose distribution is essential.
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  • A portable respiratory training system called the Gyroscope Respiratory Training System (GRTS) was developed to assess the feasibility of respiratory training.
  • The study involved comparing respiratory waveforms from patients using GRTS and another system, the Respiratory Gating for Scanners (RGSC), to evaluate the stability and reproducibility of these waveforms during expiratory breath-hold radiation therapy.
  • Results showed that GRTS provided similar accuracy to RGSC and effectively reduced variability in respiratory waveforms among patients, indicating its potential as an affordable and functional tool for respiratory training in clinical settings.
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  • FMEA (Failure Mode and Effects Analysis) is gaining traction in radiotherapy for its effectiveness in preventing errors and can be carried out by individuals or groups online.
  • A web-based FMEA risk analysis worksheet was developed using Google tools to make it more accessible and user-friendly for various purposes.
  • The worksheet proved effective for both individual and group settings, allowing simultaneous online editing and automation to streamline the analysis process, ultimately enhancing collaboration and safety.
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Ionizing radiation (IR)-induced double-strand breaks (DSBs) are primarily repaired by non-homologous end joining or homologous recombination (HR) in human cells. DSB repair requires adenosine-5'-triphosphate (ATP) for protein kinase activities in the multiple steps of DSB repair, such as DNA ligation, chromatin remodeling, and DNA damage signaling via protein kinase and ATPase activities. To investigate whether low ATP culture conditions affect the recruitment of repair proteins at DSB sites, IR-induced foci were examined in the presence of ATP synthesis inhibitors.

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Background And Purpose: Ionizing radiation (IR) induces DNA double-strand breaks (DSBs), leading to micronuclei formation, which has emerged as a key mediator of inflammatory responses after IR. This study aimed to investigate the signaling cascade in inflammatory gene expression using fibroblasts harboring DNA damage response deficiency after exposure to IR.

Materials And Methods: Micronuclei formation was examined in human dermal fibroblasts derived from patients with deficiencies in ATM, ATR, MRE11, XLF, Artemis, or BRCA2 after IR.

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  • Type 2 diabetes (T2D) is a complex disease influenced by various genetic factors and molecular mechanisms that vary by cell type and ancestry.
  • In a large study involving over 2.5 million individuals, researchers identified 1,289 significant genetic associations linked to T2D, including 145 new loci not previously reported.
  • The study categorized T2D signals into eight distinct clusters based on their connections to cardiometabolic traits and showed that these genetic profiles are linked to vascular complications, emphasizing the role of obesity-related processes across different ancestry groups.
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Background: The COVID-19 pandemic and its measures have had a profound impact on universal access to health services. We investigated the impact of the closure of the Entebbe Regional Referral Hospital (ERRH) for two years on the accessibility to necessary healthcare among non-COVID-19 patients.

Methods: This mixed-methods study focused on ERRH patients with tuberculosis (TB), human immunodeficiency virus (HIV), diabetes/hypertension, and mental illness.

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  • Stakeholder involvement in rare-disease policymaking can enhance research prioritization and resource allocation, though a structured methodology is still developing.
  • An 'Evidence-generating Commons' was created to facilitate collaboration among patients, family members, researchers, and policymakers through 25 online workshops from 2019 to 2021.
  • These workshops led to the identification of 10 categories of difficulties faced by rare disease patients and seven key research priorities, including daily life challenges and financial burdens.
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To assess the effectiveness of a pulse duration alterable Holmium-YAG (Ho:YAG) laser on the stone-free rate (SFR) compared to a conventional pulse duration fixed laser after ureterorenoscopic lithotripsy (URSL). The medical records from patients with upper urinary tract calculi of ≥ 9 mm and < 30 mm were retrospectively investigated. URSL using a conventional Ho:YAG Laser (group C) or a pulse duration alterable Ho:YAG system (group A) was included.

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We investigated the progression of nonalcoholic fatty liver disease from fatty liver to steatohepatitis using single-nucleus and bulk ATAC-seq on the livers of rats fed a high-fat diet (HFD). Rats fed HFD for 4 wk developed fatty liver, and those fed HFD for 8 wk further progressed to steatohepatitis. We observed an increase in the proportion of inflammatory macrophages, consistent with the pathological progression.

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Multiple Sclerosis (MS) is a chronic autoimmune disease of the central nervous system caused by the excessive activation of T cells. Procyanidins are polyphenols that exhibit anti-inflammatory activity. Procyanidin B2 (PCB2) gallate [specifically, PCB2 3,3″-di-O-gallate (PCB2DG)] inhibits cytokine production in T cells by suppressing the acceleration of glycolysis.

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Bats are of significant interest as reservoirs for various zoonotic viruses with high diversity. During the past two decades, many herpesviruses have been identified in various bats worldwide by genetic approaches, whereas there have been few reports on the isolation of infectious herpesviruses. Herein, we report the prevalence of herpesvirus infection of bats captured in Zambia and genetic characterization of novel gammaherpesviruses isolated from striped leaf-nosed bats ).

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Human pregnane X receptor (PXR) is a major nuclear receptor that upregulates the expression of drug-metabolizing enzymes such as CYP3A4. In our recent study, it was revealed that PXR interacts with DAZ-associated protein 1 (DAZAP1), which is an essential component of the paraspeckle, a membraneless nuclear body, and the interaction was disassociated by rifampicin, a ligand of PXR. The purpose of this study was to clarify the roles of paraspeckles in PXR-mediated transcriptional regulation.

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Pseudohyperaldosteronism can be induced by the excessive use of Chinese herbal medicines (Kampo medicines), resulting in serious disorders. We report a case of pseudohyperaldosteronism induced by two Kampo medicines which resulted in severe hypokalemia. A 70-year-old woman was hospitalized for a left calcaneal fracture.

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After experiencing a fall, an 82-year-old woman developed progressive loss of lower limb strength and was diagnosed with inclusion body myositis. Although falls and muscle weakness are often regarded as consequences of aging, inclusion body myositis should be considered in a patient with a history of multiple falls.

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Introduction: Isolated meniscal repair has been suggested as one of the contributing factors in unhealed meniscal repair. The purpose of this study was to compare the healing rate between isolated meniscal repair and meniscal repair with concomitant anterior cruciate ligament reconstruction (ACLR) using a standardised assessment method after propensity score matching.

Materials And Methods: Accuracy of the Crues' grading system for meniscal healing was validated using second-look arthroscopy as the reference standard in 17 patients.

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Type 2 diabetes (T2D) is a heterogeneous disease that develops through diverse pathophysiological processes. To characterise the genetic contribution to these processes across ancestry groups, we aggregate genome-wide association study (GWAS) data from 2,535,601 individuals (39.7% non-European ancestry), including 428,452 T2D cases.

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Bladder cancer is a major and fatal urological disease. Cisplatin is a key drug for the treatment of bladder cancer, especially in muscle-invasive cases. In most cases of bladder cancer, cisplatin is effective; however, resistance to cisplatin has a significant negative impact on prognosis.

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Background: By the end of the third wave of the coronavirus disease 2019 (COVID-19) epidemic (May-October 2021), only 3130 of the 57 268 confirmed cases of coronavirus disease 2019 (COVID-19) in the Democratic Republic of the Congo (DRC) were reported in Kongo Central. This province, and especially its capital city, Matadi, has essential trade and exchanges with Kinshasa, the epicenter of the COVID-19 epidemic in DRC. Kinshasa accounted for 60.

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Purpose: The questionnaire survey investigated whether "Explainer videos about radiation therapy (RT-Video)", "Treatment of breast cancer patients by female radiation therapists (F-RTT)" and "Treating male patients while wearing underwear in pelvic radiation therapy (M-RTT)" can improve patient's satisfaction.

Methods: The RT-Video survey included questions regarding the impression of radiation therapy, improving its understanding, and anxiety reduction (102 patients received radiation therapy). Fifty-one breast cancer patients were asked whether they preferred an F-RTT treatment.

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