Publications by authors named "Yuto Arai"

Introduction: Stigma toward epilepsy is widespread not only among the general population but also among healthcare professionals. Therefore, the necessity of providing educational opportunities for epilepsy from an early stage in student education has been emphasized. Recently, problem-based learning (PBL) has gained importance in higher education, with reports indicating that it not only enhances knowledge but also reduces stigma.

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The relationship between maternal prenatal psychological distress and epilepsy development in offspring has not yet been clarified. Herein, we used a dataset obtained from the Japan Environment and Children's Study, a nationwide birth cohort study, to evaluate the association between six-item Kessler Psychological Distress Scale (K6) scores and epilepsy among 1-3 years old. The data of 97,484 children were retrospectively analyzed.

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Background: Home care for children with severe motor and intellectual disabilities (SMID) is challenging for parents because it is highly intensive and long-lasting. The pursuit of happiness is an essential goal for everyone. However, only a few studies have focused on the happiness of families with such children.

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Photoisomerizable molecules in liquid crystals (LCs) allow for photoinduced phase transitions, facilitating applications in a wide variety of photoresponsive materials. In contrast to the widely investigated azobenzene structure, research on the photoinduced phase-transition behavior of imine-based LCs is considerably limited. We herein report the thermal and photoinduced phase-transition behaviors of photoisomerizable imine-based LC dimers with twist-bend nematic (N) phases.

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Background: In Japan, approximately 35% of facilities experience sedation-related complications for pediatric magnetic resonance imaging (MRI), including severe complications such as respiratory and cardiac arrests. In the medical education field, simulation improves not only the quality of real emergency response but also health care workers' self-efficacy. Individuals with high self-efficacy are better prepared at handling diverse conditions.

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Article Synopsis
  • ASXL3-related disorder is a genetic condition that leads to developmental delays and limited speech, first identified in 2013, and follows an autosomal dominant inheritance pattern.
  • A 14-year-old girl with the disorder presented with emotional instability and a significant decrease in food intake, resulting in weight loss, with no signs of bulimia or food allergies.
  • This case marks the first adolescent instance of feeding difficulties linked to ASXL3-related disorder, suggesting avoidant/restrictive food intake disorder (ARFID) as a possible contributing factor.
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Background: Self-efficacy plays an important role in enhancing the teaching capabilities of attending physicians (APs). The clinical ladder (CL) is an educational approach developed in the field of nursing education that increases difficulty in an incremental manner. However, no previous study has confirmed the effectiveness of CL in medical education.

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Article Synopsis
  • The study discusses three patients with early onset epileptic spasms who did not show hypsarrhythmia on EEG results and had other types of seizures.
  • These patients, who were between 1 and 3 months old, showed no abnormalities on neurometabolic tests or brain imaging, but long-term monitoring revealed varying seizure patterns.
  • All three patients achieved seizure freedom through treatment primarily with topiramate, suggesting this medication could be a viable option for managing early onset epileptic spasms without hypsarrhythmia.
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Introduction: The incidence of autism spectrum disorder (ASD) in children is greater than 1%. Children with ASD show an increased rate of hospital contact for several reasons. Perioperative preparation for children with ASD can be challenging; therefore, obtaining information from patients' families prior to surgery is important.

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Objective: Coronavirus disease 2019 (COVID-19) has significantly impacted medical services worldwide. During the Omicron variant-predominant era, febrile seizure (FS) in patients with COVID-19 increased compared to that in the pre-Omicron variant era. Therefore, this study aimed to demonstrate the clinical characteristics of FS in patients with COVID-19.

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Background: Acute encephalopathy with biphasic seizures and late reduced diffusion (AESD) often develops in children with febrile status epilepticus (FSE) with neurological sequelae. No study has investigated the associations between prehospital emergency care and AESD onset.

Methods: We retrospectively collected the data of children with FSE (>30 min) treated in Tottori University Hospital.

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Objective: The employment outcomes of childhood-onset drug-resistant epilepsy (DRE) has not been studied enough. The aim of this retrospective cohort study is to investigate the employment outcomes of childhood-onset DRE in June 2022 and identify the risk factors associated with non-employment.

Materials And Methods: The sample consisted of 65 participants ≥18 years of age with a history of childhood-onset DRE.

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Introduction: Children with infantile epileptic spasms syndrome (IESS) are likely to experience poor outcomes. Researchers have investigated the factors related to its long-term prognosis; however, none of them developed a predictive model.

Objective: This study aimed to clarify the factors that influence the long-term prognosis of seizures and their development and to create a prediction model for IESS.

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Introduction: Infantile epileptic spasms syndrome (IESS) is characterized by epileptic spasms, regardless of hypsarrhythmia on electroencephalogram or neurodevelopmental delay. In Japan, pyridoxal 5'-phosphate (PLP) is often used as the first-line treatment for IESS because it is effective in a certain number of patients. Although several studies have reported serious adverse events following PLP treatment, no study has investigated the risk factors for such occurrences.

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Article Synopsis
  • * Researchers isolated a lethal protein called pleurocybelline (PC) from the mushroom, which did not harm the brain directly but formed a complex with another protein, showing damaging effects.
  • * A toxic substance named pleurocybellaziridine (PA) was also found in the mushroom, and a mixture of PC, PPL, and PA caused increased cell death in the hippocampus, suggesting their roles in the disease's progression.
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Introduction: Autoimmune encephalitis (AIE) is a relatively newly described category of immune-mediated diseases involving the central nervous system with a wide spectrum of clinical presentations, ranging from relatively mild or insidious onset of cognitive impairment to more complex forms of encephalopathy with medically refractory seizures. Single or multifocal seizures accompanied by neuropsychiatric symptoms and cognitive or memory impairments are suggestive of clinical features at AIE onset.

Case Report: A six-year-old boy presented with repetitive focal seizures, slowly progressive emotional liability, and attention-deficit/hyperactivity disorder-like symptoms.

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Introduction: Congenital disorders of glycosylation (CDG) are inherited inborn errors of metabolism due to abnormal protein and lipid glycosylation that present with multi-systemic manifestations. The heterogeneity of CDG poses a serious diagnostic challenge; therefore, whole-exome sequencing (WES), which plays an increasingly important role in the molecular diagnosis of CDG, is used for examining patients with CDG.

Case Report: We report the case of a two-month-old male patient who developed developmental and epileptic encephalopathy (DEE) with intractable seizures and microcephaly.

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Introduction: Cerebellar mutism syndrome is a debilitating postoperative neurological complication following posterior fossa surgery in children. It is characterized by a significant lack or loss of speech. Injury to the dentato-thalamo-cortical pathway is thought to be the main anatomical substrate of cerebellar mutism syndrome; however, few studies have investigated the physiological changes using computed electroencephalogram.

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The widespread adoption of long-term organs-on-a-chip culture necessitates both active perfusions that mimic physiological flow conditions and minimization of the complexity of microfluidic system and fluid handling. In particular, flow in microtissue such as microvascular is free of pulsation and backflow. The refreshable Braille actuator-based integrated microfluidic system can be employed with simple microchannels and setups.

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Stimuli-responsive structural color in nature has fascinated scientists, directing them to develop artificial coloration materials that adjust colors in response to external stimuli. Many stimuli-responsive structural color materials have been realized. However, only a few have reported on all-liquid-type materials, which have a particularly desirable feature because they impart their function to the device of any shape.

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Hypertension is a rare complication of Leigh Syndrome (LS), but prognosis of patients with hypertension is poor and its presence is indicative of the terminal stage of the disease. Herein, we report a four-year-old girl case diagnosed with LS at 15 months of age who subsequently developed severe hypertension and respiratory failure. Physical examination and laboratory findings did not indicate a secondary cause of hypertension.

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We propose a flexible-ratio adaptive point-spread spherical wave synthesis method for fast computer-generated hologram calculation. The conventional adaptive point-spread algorithm uses a fixed ratio between the major and minor axes of the point source, whereas the proposed method uses flexible-ratio sources, i.e.

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Nevoid basal cell carcinoma syndrome (NBCCS) is an autosomal dominant disorder characterized by developmental defects and tumorigenesis such as medulloblastomas and basal cell carcinomas, caused by mutations of the patched-1 (PTCH1) gene. To date, we have detected 73 mutations in PTCH1 and ten of them (14 %) were suspected splicing mutations. Eight out of the ten mutations were localized near the splice donor site.

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