Publications by authors named "Shigeki Sato"

Objective: It remains unclear whether general hospitals without psychiatric wards can provide sufficient services for both physical and mental health needs, as they often lack adequate psychiatrists, primarily due to cost constraints. This article explores the relationship between the number of full-time psychiatrists and functionality for integrating physical and mental health services in these settings.

Methods: The Medical Policy Committee of the Japanese Society of General Hospital Psychiatry conducted a nationwide survey in 2022 to evaluate the detailed scope and volume of service of psychiatric departments in general hospitals without a psychiatric ward.

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Background/aim: We previously reported the usefulness of detecting aberrant methylation in tumor suppressive microRNAs (miRNAs) in bile and plasma to discriminate pancreaticobiliary cancers from benign pancreaticobiliary diseases. This study analyzed the methylation of miRNAs in pancreatic juice to identify those specific to pancreatic cancer (PC).

Patients And Methods: Pancreatic juice was collected from 20 patients with PC, including eight with intraductal papillary mucinous carcinoma (IPMC), two with low grade-pancreatic intraepithelial neoplasia (LG-PanIN), 32 with LG-intraductal papillary mucinous neoplasm (IPMN), and seven with benign pancreatic lesions.

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Article Synopsis
  • A glioblastoma patient with high tumor mutation burden and mismatch repair deficiency showed a strong positive response to pembrolizumab, an immune checkpoint inhibitor, despite previous treatment with temozolomide which usually leads to resistance.
  • Despite rapid disease progression, indicated by high Ki67 levels, the patient's condition improved significantly with pembrolizumab.
  • This case highlights the potential of precision oncology in treating GBM and emphasizes the need for thorough genomic profiling to inform treatment strategies.
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Precision medicine has drastically changed cancer treatment strategies including KRAS-mutant cancers which have been undruggable for decades. While intrinsic or acquired treatment resistance remains unresolved in many cases, epigenome-targeted therapy may be an option to overcome. We recently discovered the effectiveness of blocking small ubiquitin-like modifier (SUMO) signaling cascade (SUMOylation) in MYC-expressing KRAS-mutant cancer cells using a SUMO-activating enzyme E inhibitor TAK-981 that results in SUMOylation inhibition.

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  • A case study of a 29-year-old Japanese woman with schizophrenia on clozapine during pregnancy showed no complications until a late incident of premature rupture of membranes, which led to an emergency cesarean section.
  • The study indicates that clozapine and its metabolite norclozapine were transferred to the fetus and may have impacted fetal heart rate; it advises careful monitoring of clozapine levels and fetal health during pregnancy for better outcomes.
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  • Immune checkpoint inhibitors (ICIs) can improve cancer treatment but may cause serious side effects, including myocarditis.
  • The report discusses two cases of myocarditis that did not respond to corticosteroids, indicating a severe reaction to ICIs.
  • Additional treatments like intravenous immunoglobulin and tacrolimus were effective in resolving the myocarditis, suggesting that early use of alternative immunosuppressive therapies should be considered when corticosteroids fail.
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Hydrated nickel hydroxides with partial aluminum substitution were synthesized using the conventional coprecipitation and soft chemistry methods. The soft chemistry derived sample showed better reversibility owing to the low activity for oxygen evolution during charging. Operando X-ray diffraction indicated the increased interlayer distance and decreased crystallinity during discharging caused by water accommodation.

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  • - The case involves a 59-year-old man with poorly differentiated lung carcinoma and a rare K601E mutation who showed limited response to the targeted drugs dabrafenib and trametinib after failing chemotherapy and immunotherapy.
  • - Although the patient had a significant initial response to the treatment, the tumor's regression lasted only 52 days before progressing, indicating a rapid development of resistance.
  • - A follow-up liquid biopsy revealed additional genetic changes associated with resistance, highlighting the complexities of treating K601E-mutant lung carcinoma and the need for improved molecular diagnostics and personalized therapy strategies.
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Background: KRAS mutations frequently occur in cancers, particularly pancreatic ductal adenocarcinoma, colorectal cancer, and non-small cell lung cancer. Although KRAS inhibitors have recently been approved, effective precision therapies have not yet been established for all KRAS-mutant cancers. Many treatments for KRAS-mutant cancers, including epigenome-targeted drugs, are currently under investigation.

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The clinical development of Kirsten rat sarcoma virus (KRAS)-G12C inhibitors for the treatment of KRAS-mutant lung cancer is limited by the presence of co-mutations, intrinsic resistance, and the emergence of acquired resistance. Therefore, innovative strategies for enhancing apoptosis in KRAS-mutated non-small cell lung cancer (NSCLC) are urgently needed. Through CRISPR-Cas9 knockout screening using a library of 746 crRNAs and drug screening with a custom library of 432 compounds, we discover that WEE1 kinase inhibitors are potent enhancers of apoptosis, particularly in KRAS-mutant NSCLC cells harboring TP53 mutations.

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In the realm of rare cardiac tumors, intimal sarcoma presents a formidable challenge, often requiring innovative treatment approaches. This case report presents a unique instance of primary intimal sarcoma in the left atrium, underscoring the critical role of genomic profiling in guiding treatment. Initial genomic testing unveiled a somatic, active mutation in ( N666K), accompanied by and amplifications.

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Differential bone marrow (BM) cell counting is an important test for the diagnosis of various hematological diseases. However, it is difficult to accurately classify BM cells due to non-uniformity and the lack of reproducibility of differential counting. Therefore, automatic classification systems have been developed in which deep learning is used.

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Article Synopsis
  • The study compared the effectiveness of two first-line treatments for inoperable pancreatic cancer: FOLFIRINOX, which includes leucovorin, 5-fluorouracil, irinotecan, and oxaliplatin, versus gemcitabine plus Nab-paclitaxel (GnP).
  • Data from 45 patients treated between 2014 and 2019 were analyzed, revealing that while there was no significant difference in the time until disease progression, patients on FOLFIRINOX had a longer median overall survival (16.7 months) compared to those on GnP (7.2 months).
  • The findings also suggested that patients on GnP were less likely to switch to FOLF
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Primary malignant melanoma (MM) of the mediastinum is rare, and there is a lack of consensus regarding the preferred treatment because non-cutaneous MM demonstrates an inferior response to systemic therapy. Herein, we describe the case of a 73-year-old man with MM of the anterior mediastinum with multiple liver metastases. Even though the size of lesions increased rapidly following diagnosis, nivolumab monotherapy caused remarkable tumor shrinkage.

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Background: Potential disparities between cancer patients with and without disabilities remained to be validate in Japan.

Methods: We surveyed retrospective data on hospital cancer registration as well as information on disability certificates obtained through the Hokushin Ganpro database. In total, 93,545 cancer patients in 10 principal hospitals covering the region of northwestern Japan were registered with the Hokushin Ganpro database between 2010 and 2015.

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The common marmoset has been proposed as a potential alternative to macaque monkey as a primate model for neuroscience and medical research. Here, we have newly developed a stereotaxic neuronal recording system for awake marmosets under the head-fixed condition by modifying that for macaque monkeys. Using this system, we recorded neuronal activity in the cerebral cortex of awake marmosets and successfully identified the primary motor cortex by intracortical microstimulation.

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To understand how information from different cortical areas is integrated and processed through the cortico-basal ganglia pathways, we used optogenetics to systematically stimulate the sensorimotor cortex and examined basal ganglia activity. We utilized Thy1-ChR2-YFP transgenic mice, in which channelrhodopsin 2 is robustly expressed in layer V pyramidal neurons. We applied light spots to the sensorimotor cortex in a grid pattern and examined neuronal responses in the globus pallidus (GP) and entopeduncular nucleus (EPN), which are the relay and output nuclei of the basal ganglia, respectively.

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Now, the psychiatric departments of general hospitals are unpopular workplaces for psy- chiatrists in Japan. However, I think there is a constant need for psychiatric departments of general hospitals, because the number of psychiatric departments of general hospitals with no psychiatric beds is increasing, even though the number of psychiatric departments of general hospitals with psychiatric beds is decreasing. Recently, there has been a trend of reevaluating psychiatry in medical care, such as in the medical treatments fees or in health care planning, so we cannot talk about medical care without involving psychiatry.

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In 2014, Japanese Ministry of Health, Labour and Welfare published the guideline on the policy of the psychiatric hospitals. We executed a survey to the members of "The Japanese Society of Psychiatry and Neurology" about the impression of this guideline, especially about "The functional differentiation of psychiatric hospital beds". Nine questions were notified on the home page of the society.

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Objective: The aim of this study was to investigate the prevalence of delirium on admission, the course of delirium during a 2-week period after admission and factors associated with delirium on admission, among elderly patients with advanced cancer.

Methods: Patients aged ≥ 65 years with incurable lung or gastroenterological cancer and the Eastern Cooperative Oncology Group Performance Status 2 or greater were continuously sampled after admission to a university hospital. Participants were evaluated for DSM-IV-TR delirium by trained psychiatrists and the delirium subtype was assessed using the Delirium Motor Subtype Scale within 4 days after admission and again 2 weeks later.

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Background: With the recent widespread use of endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA), there have been occasional reports on complications associated with its use. Previous reviews on EBUS-TBNA have been limited to studies by skilled operators, thus the results may not always be applicable to recent clinical practice. To assess the safety of EBUS-TBNA for the staging and diagnosis of lung cancer in Japan, a nationwide survey on its current usage status and complications associated with its use was conducted by the Japan Society for Respiratory Endoscopy (JSRE).

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Thoracoscopy is a useful method for diagnosing plural lesions. We diagnosed 3 cases of ovarian adenocarcinoma by thoracoscopy. All patients were middle-aged and elderly women.

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