Publications by authors named "Suga M"

Background: Remimazolam, an ultra-short-acting benzodiazepine, has similar clinical effects to propofol for sedation in general anaesthesia. However, it remains uncertain whether remimazolam could increase postoperative delirium (POD) compared with propofol.

Objectives: The purpose of our study was to compare the incidence of POD between remimazolam and propofol as sedative agents in general anaesthesia.

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Photosynthetic water oxidation is a vital process responsible for producing dioxygen and supplying the energy necessary to sustain life on Earth. This fundamental reaction is catalyzed by the oxygen-evolving complex (OEC) of photosystem II, which houses the MnCaO cluster as its catalytic core. In this study, we specifically focus on the D1-Glu189 amino acid residue, which serves as a direct ligand to the MnCaO cluster.

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Purpose: Drug photodegradation is a matter of great concern because it can result in potency loss and adverse side effects. This study examines the light-induced degradation of dacarbazine catalyzed by vitamin B and flavin adenine dinucleotide (FAD) under light-emitting diode (LED) or fluorescent light irradiation.

Methods: Dacarbazine was irradiated with LED (405 nm) or fluorescent light in the presence of various equivalents of vitamin B or FAD.

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  • Post-intubation hypotension (PIH) is a common issue in emergency intubations, with metabolic acidosis identified as a potential risk factor.
  • A study analyzed 311 patients, revealing that 65.5% of those with pre-intubation metabolic acidosis experienced PIH, compared to only 29.3% without it.
  • The findings suggest that metabolic acidosis increases the likelihood of PIH, indicating that physicians should closely monitor patients with this condition during intubation.
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Cord blood (CB)-derived chimeric antigen receptor (CAR)-natural killer (NK) cells targeting CD19 have been shown to be effective against B cell malignancies. While human CD56 NK cells can be expanded , NK cells can also be differentiated from hematopoietic progenitor cells. It is still unclear whether CAR-NK cells originate from mature NK cells or NK progenitor cells in CB.

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Axons are ultrathin membrane cables that are specialized for the conduction of action potentials. Although their diameter is variable along their length, how their morphology is determined is unclear. Here, we demonstrate that unmyelinated axons of the mouse central nervous system have nonsynaptic, nanoscopic varicosities ~200 nm in diameter repeatedly along their length interspersed with a thin cable ~60 nm in diameter like pearls-on-a-string.

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An anomalous pattern of structural covariance has been reported in schizophrenia, which has been suggested to represent connectome changes during brain maturation and neuroprogressive processes. It remains unclear whether similar differences exist in a clinical high-risk state for psychosis, and if they are associated with a prodromal phenotype and/or later psychosis onset. This multicenter magnetic resonance imaging study cross-sectionally examined structural covariance in a large at-risk mental state (ARMS) sample with different outcomes.

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  • Segregated-nucleus-containing atypical monocytes have been identified in mice and are believed to induce fibrosis in drug-injured lungs, with a human counterpart potentially existing in primary myelofibrosis.
  • A 74-year-old male patient with primary myelofibrosis had anemia and elevated lactate dehydrogenase, and his bone marrow showed histological features consistent with the disease.
  • Immunohistochemical analysis revealed the presence of some CD16MSR1CEACAM1 cells in the patient's bone marrow, suggesting a possible connection to murine atypical monocyte characteristics.
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Background: Infectious diseases remain a major cause of morbidity and mortality after hematopoietic cell transplantation (HCT). Secondary hypogammaglobulinemia is a risk factor for infectious diseases. Total immunoglobulin G (IgG) levels and the history of infectious diseases are an integral part of determining the indication for immunoglobulin replacement therapy.

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  • The study investigated what factors contribute to better neurological outcomes in patients initially experiencing pulseless electrical activity (PEA) who received extracorporeal cardiopulmonary resuscitation (ECPR).
  • Data from the SAVE-J II registry, which included 36 hospitals in Japan, showed that only 8.2% of patients had favorable neurological outcomes, while 16.9% survived to hospital discharge.
  • Key factors linked to better outcomes included absence of cardiac rhythm conversion to asystole, presence of signs of life, pupil size, and temporary return of circulation, with certain causes of cardiac arrest like acute coronary syndrome having higher favorable outcomes.
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  • This study investigates the impact of the Tokyo Summer Olympic/Paralympic Games on emergency medical services by analyzing out-of-hospital cardiac arrest (OHCA) patient outcomes during and around the event.
  • Researchers compared 30-day survival rates of OHCA patients admitted to hospitals during the Olympics/Paralympics (July-August 2021) with those from the same time in previous years and nearby timeframes before and after the events.
  • The findings indicate that there were no significant differences in 30-day survival rates for OHCA patients across the different time periods, suggesting that the Olympics and Paralympics did not notably influence emergency medical outcomes.
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The photocatalytic synthesis of thermodynamically less-stable -alkenes has received considerable research attention in recent years. In this study, a recycling photoreactor was applied to the photoisomerization of -alkenes (cinnamamide and Weinreb amide derivatives) to produce -alkenes. The closed-loop recycling system comprises an immobilized photosensitizer to achieve rapid photoisomerization and a high-performance liquid chromatography instrument for separation of the / diastereomers.

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Inherited retinal dystrophies (IRDs) are progressive diseases leading to vision loss. Mutation in the eyes shut homolog (EYS) gene is one of the most frequent causes of IRD. However, the mechanism of photoreceptor cell degeneration by mutant EYS has not been fully elucidated.

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Objective: The association between fluid balance and outcomes in patients who underwent out-of-hospital cardiac arrest (OHCA) and received extracorporeal cardiopulmonary resuscitation (ECPR) remains unknown. We aimed to examine the above relationship during the first 24 h following intensive care unit (ICU) admission.

Methods: We performed a secondary analysis of the SAVE-J II study, a retrospective multicenter study involving OHCA patients aged ≥ 18 years treated with ECPR between 2013 and 2018 and who received fluid therapy following ICU admission.

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Fat embolism syndrome (FES) is a rare complication of long bone fractures, with fulminant FES developing within 12 h of injury and often proving fatal (Shaikh, 2009 [1]). Here, we present a case of fulminant FES in a patient who developed sudden right heart failure after undergoing external fixation of a lower leg fracture and required veno-arterial extracorporeal membrane oxygenation (VA-ECMO). A 79-year-old woman injured in a traffic accident was transferred to our emergency department.

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  • The central nervous system's glial cells are primarily made up of astrocytes, whose impairment is linked to various disorders.
  • Researchers are trying to explore how to analyze astrocytes derived from induced pluripotent stem cells (iPSCs) to understand their roles in disease conditions.
  • By modifying differentiation protocols and evaluating functions like cytokine release and calcium influx, the study developed a method to model astrocyte-related diseases, specifically Alexander disease, using iPSC-derived astrocytes.
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Purpose: We investigated interplay effects and treatment time (TT) in scanned proton therapy for lung cancer patients. We compared free-breathing (FB) approaches with multiple rescanning strategies and respiratory-gating (RG) methods with various gating widths to identify the superior irradiation technique.

Methods: Plans were created with 4/1, 2/2, and 1/4 layered/volume rescans of FB (L4V1, L2V2, and L1V4), and 50%, 30%, and 10% gating widths of the total respiratory curves (G50, G30, and G10) of the RG plans with L4V1.

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Synucleinopathies refer to a group of disorders characterized by SNCA/α-synuclein (α-Syn)-containing cytoplasmic inclusions and neuronal cell loss in the nervous system including the cortex, a common feature being cognitive impairment. Still, the molecular pathogenesis of cognitive decline remains poorly understood, hampering the development of effective treatments. Here, we generated induced pluripotent stem cells (iPSCs) derived from familial Parkinson's disease (PD) patients carrying SNCA A53T mutation, differentiating them into cortical neurons by a direct conversion method.

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The influx of pathogenic aquaporin-4 antibodies (AQP4-Abs) across the blood-spinal cord barrier (BSCB) is crucial for the development and exacerbation of neuromyelitis optica (NMO). We examined whether prophylactic intravenous administration of anti-repulsive guidance molecule-a antibodies (RGMa-Abs) has disease-modifying effects on BSCB dysfunction using an NMO model elicited by peripheral administration of AQP4-Abs to rats. RGMa-Ab treatment attenuated the acute exacerbation of perivascular astrocytopathy in the spinal cord and clinical symptoms, which were highly correlated with neurofilament light chain levels in both the cerebrospinal fluid (CSF) and serum.

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  • Photosystem II (PSII) initiates water oxidation through a four-step cycle involving S states (i=0-4) at a manganese-calcium-oxygen (MnCaO) cluster, ultimately leading to oxygen production.
  • Employing pump-probe serial femtosecond crystallography, the study tracks structural changes in PSII from nanoseconds to milliseconds following illumination, highlighting rapid dynamics of a tyrosine residue and surrounding molecules connected to the electron transfer process.
  • A notable finding includes the appearance and subsequent disappearance of a water molecule near the D1 subunit’s Glu189, indicating its role in forming the O6 oxygen during this fast-paced electron and proton transfer sequence.
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Trisomy 12 is one of the most frequent chromosomal abnormalities in cultured human pluripotent stem cells (hPSCs). Although potential oncogenic properties and augmented cell cycle caused by trisomy 12 have been reported, the consequences of trisomy 12 in terms of cell differentiation, which is the basis for regenerative medicine, drug development, and developmental biology studies, have not yet been investigated. Here, we report that trisomy 12 compromises the mesendodermal differentiation of hPSCs.

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The living body is composed of innumerable fine and complex structures. Although these structures have been studied in the past, a vast amount of information pertaining to them still remains unknown. When attempting to observe these ultra-structures, the use of electron microscopy (EM) has become indispensable.

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Background: This study evaluated the association between intra-aortic balloon pump (IABP) use in patients with out-of-hospital cardiac arrest (OHCA) caused by acute coronary syndrome (ACS) who received extracorporeal cardiopulmonary resuscitation (ECPR) and 30-day outcomes.

Methods: This study was a secondary analysis of data from the SAVE-J II study, a retrospective, multicenter registry study involving 36 participating institutions in Japan. Patients with cardiac arrest caused by ACS who received ECPR were divided into two groups depending on whether or not they received IABP.

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Background: This study aimed to investigate the association between blood glucose levels on arrival at the hospital and 1-month survival and favorable neurological outcomes in patients with OHCA using a large Japanese dataset.

Methods: This study was a secondary analysis of data from the JAAM-OHCA Registry. Adult (≥18 years) patients with witnessed OHCA transported to emergency departments and registered in the database from June 2014 to December 2019 were included in the study.

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Immunoglobulin replacement therapy (IgRT) reduces the risk of infection in hypogammaglobulinaemia secondary to chronic lymphocytic leukaemia and multiple myeloma. However, the benefit of IgRT, especially subcutaneous IgRT (ScIgRT), has not been assessed in hypogammaglobulinaemia after allogeneic haematopoietic cell transplantation (allo-HCT). We performed a pre-post comparison of the clinical impact of ScIgRT after allo-HCT in a retrospective analysis of 209 patients who underwent allogeneic HCT at our institution from 2011 to 2019.

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