Publications by authors named "Kawahara H"

Introduction: Research supporting the presence of diverse motor impairments, including impaired balance coordination, in children with autism spectrum disorder (ASD) is increasing. The one-legged standing test (OLST) is a popular test of balance. Since machine learning is a powerful technique for learning predictive models from movement data, it can objectively evaluate the processes involved in OLST.

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Myoepithelial carcinoma is an exceedingly rare malignancy, particularly when originating from the skin. It frequently arises from malignant transformations of pleomorphic adenomas in various locations such as the parotid gland, breast, soft tissues, and lungs. Primary cutaneous myoepithelial carcinoma is exceptionally rare, often leading to delayed diagnosis.

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  • - The study highlights how childcare leave can hinder the training of early-career psychiatrists in Japan, leading to the development of a teleoperated robot system (Sota) that allows them to learn remotely while on leave.
  • - A case study is presented where a young psychiatrist used Sota to observe and communicate with a board-certified psychiatrist during a patient examination, enhancing her learning about Tourette's syndrome while at home.
  • - The findings indicate that this teleoperated system is beneficial for ongoing professional development during childcare leave, and future research is encouraged to further assess its effectiveness and impact over time.
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Ice formation is a critical challenge across multiple fields, from industrial applications to biological preservation. Inspired by natural antifreeze proteins, we designed and synthesized a new class of small-molecule antifreezes based on α-helical -terphenyl scaffolds with guanidine side chains. These -terphenyl guanidines , among the smallest molecules that mimic α-helical structures, exhibit potent ice recrystallization inhibition (IRI) activity, similar to that of existing large α-helical antifreeze compounds.

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  • The Japan Gastroenterological Association released clinical guidelines for chronic diarrhea in 2023, detailing its definition, classification, and diagnostic methods.
  • The guidelines emphasize distinguishing between types of chronic diarrhea and recommend lifestyle and dietary changes as the first line of treatment, followed by probiotics and anti-diarrheals.
  • They also note that many other treatments lack sufficient evidence, indicating a need for future research to improve chronic diarrhea management globally.
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Toxic algae in eutrophic lakes produce cyanotoxic microcystins. Prior research on the effect of microcystin-LR in the kidney utilized intraperitoneal injections, which did not reflect natural exposure. Oral microcystin-LR research has focused on renal function and histopathology without examining the molecular mechanisms.

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  • - The Japan Gastroenterological Association released the first version of clinical guidelines for chronic constipation in 2023, detailing its definition, classification, diagnostic criteria, and treatment options based on the latest evidence.
  • - Treatment begins by identifying whether constipation is secondary due to other diseases or medications, then assessing for motility disorders; initial management includes lifestyle changes and osmotic laxatives.
  • - The guidelines emphasize a structured approach to diagnosis and treatment, including flowcharts, and suggest that stimulant laxatives should be used sparingly while alternative therapies have less evidence.
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Better communication with older people requires not only improving speech intelligibility but also understanding how well emotions can be conveyed and the effect of age and hearing loss (HL) on emotion perception. In this paper, emotion discrimination experiments were conducted using a vocal morphing method and an HL simulator in young normal hearing (YNH) and older participants. Speech sounds were morphed to represent intermediate emotions between all combinations of happiness, sadness, and anger.

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The first results of the study of high-energy electron neutrino (ν_{e}) and muon neutrino (ν_{μ}) charged-current interactions in the FASERν emulsion-tungsten detector of the FASER experiment at the LHC are presented. A 128.8 kg subset of the FASERν volume was analyzed after exposure to 9.

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  • Drug repositioning explores new uses for existing drugs, and this study focuses on midazolam (MDZ), a sedative, for inhibiting inflammatory bone loss.
  • Experiments showed that MDZ reduced the differentiation of macrophages into osteoclasts, which are responsible for bone resorption, both in cell culture and in mice treated with lipopolysaccharide (LPS).
  • MDZ's effect is linked to lowering reactive oxygen species (ROS) production and regulating a specific signaling pathway (p38 MAPK), suggesting it could be a treatment option for conditions like periodontal disease.
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Introduction: During laparoscopic cholecystectomy for acute cholecystitis, it is often difficult to keep the surgical view dry because of inflammation-related tissue fragility and susceptibility to bleeding. The resulting inadequate surgical view can lead to bile duct or vascular injury. Soft coagulation systems are used to achieve hemostasis during various surgeries; however, the usefulness of soft coagulation during laparoscopic cholecystectomy for acute cholecystitis is unclear.

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  • Shear wave elastography (SWE) is a noninvasive method used to measure organ stiffness, primarily focusing on liver stiffness to assess congestion in patients with heart failure (HF).
  • This study evaluated the use of SWE not just for the liver, but also for thyroid congestion in 21 patients with HF, highlighting a significant correlation between thyroid and liver stiffness measurements.
  • The results suggest that thyroid stiffness assessed by SWE is associated with clinical markers such as thyroid hormones and right atrial pressure, indicating that thyroid congestion may reflect overall cardiac congestion and potentially lead to thyroid dysfunction.
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  • Pyoderma gangrenosum is a rare skin disease that causes painful ulcers with specific characteristics and can occur alongside other conditions like rheumatoid arthritis and inflammatory bowel disease.
  • A unique case was reported involving a 67-year-old obese female who had both pyoderma gangrenosum and IgA vasculitis, leading to large, rapidly expanding skin wounds.
  • Treatment with a TNF-α inhibitor (adalimumab) successfully reduced the ulceration and promoted healing after initial treatment with oral prednisolone.
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This study examined the thermal dehydration characteristics of CaSO∙2HO in a constant-volume rotary vessel. The experiment used CaSO∙2HO particles obtained from the crushed waste gypsum board. The particle size ranged from 850 to 2000 μm, and the experiment was carried out at varying rotation speeds of 1, 10, and 35 rpm, with the vessel temperature heated to 180 °C.

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A 51-year-old man developed acute disturbances in consciousness and psychiatric symptoms one month prior to admission. He was referred and admitted to the Department of Psychiatry of our hospital and transferred to the neurology department because diffuse white matter lesions were found on his brain during MRI. I-IMP-SPECT showed extensive cerebral hypoperfusion mainly in the frontal lobes.

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"Pigmentibacter ruber" was first reported in 2021, a novel bacterium of the family Silvanigrellaceae, isolated from human blood of the patient with aspiration pneumonia after the drowning accident in Republic of China. However, until now, there is only one report describing "P. ruber" infection, and no case of isolation from natural environment has been reported so far.

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Meckel's diverticulum (MD) is a commonly encountered congenital gastrointestinal abnormality. Although the frequency of MD-related complications such as inflammation or bleeding is relatively high, small bowel obstruction induced by axial torsion of the MD is rare. Therefore, we herein report such a case along with a review of the literature.

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Arytenoid cartilage dislocation can occur as a complication of tracheal intubation and laryngeal trauma, but its occurrence with indirect video laryngoscopy has not been reported. This paper reports anterior arytenoid dislocation occurring after nasotracheal intubation performed under indirect laryngoscopy using a video laryngoscope (McGRATH MAC; Medtronic). The dislocation is presumed to have resulted from the laryngoscope blade being initially inserted too deeply and applying pressure to the posterior aspect of the left cricoarytenoid joint.

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  • Anti-IgLON5 disease is characterized by various neurological symptoms, notably dysautonomia, which often does not respond to typical immunotherapy.
  • A patient with this condition exhibited multiple autonomic failures, including severe vocal cord palsy, cognitive issues, and motor and gastrointestinal dysfunctions.
  • However, after receiving combined immunotherapy, the patient's symptoms—including the vocal cord palsy—showed significant improvement, indicating potential benefits of this treatment approach for dysautonomia in anti-IgLON5 disease.
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A 65-year-old female was previously diagnosed with remitting seronegative symmetrical synovitis with pitting edema (RS3PE) syndrome by internal doctors in our hospital nine years ago. Computed tomography revealed the presence of multiple disseminated peritoneal nodules with a large tumor mass. Histological analysis of the tumor and peritoneal nodules confirmed the diagnosis of high-grade serous ovarian cancer.

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  • - Scleroderma renal crisis (SRC) is a serious complication of systemic sclerosis that can lead to kidney failure, with normotensive SRC being particularly hard to diagnose; this condition may develop after kidney transplantation in patients who have received high doses of glucocorticoids.
  • - A case study highlights a 37-year-old man with overlapping systemic sclerosis and lupus who developed normotensive SRC after kidney transplantation and glucocorticoid treatment, leading to worsening kidney function and eventual hemodialysis.
  • - It's important for nephrologists to recognize the potential for SRC in transplanted kidneys and to monitor patients closely, especially when they are on high-dose glucocorticoids, to ensure timely diagnosis and management.
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Objectives: Reportedly, patients with LN and low-level proteinuria have favourable short-term renal outcomes. We aimed to clarify the long-term renal outcomes and overall survival of these patients, and the significance of renal biopsy in the early phase with low-level proteinuria.

Methods: We included 144 Japanese patients with biopsy-proven LN from 10 hospitals.

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Coronary periarteritis is a dangerous manifestation of IgG4-related disease, because it forms coronary artery aneurysms, which may cause sudden cardiac death. We report the case of a 78-year-old woman with IgG4-related coronary periarteritis and a coronary aneurysm, which showed progressive enlargement despite maintenance therapy for Type 1 autoimmune pancreatitis. This case was unique, in that coronary periarteritis was the only active lesion that recurred.

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Lung spindle cell carcinoma is an aggressive subtype of pleomorphic lung cancer resistant to cytotoxic chemotherapy. Programmed cell death-1 (PD-1) inhibitors have been reported to have clinical effects in patients with spindle cell carcinoma; however, the resistance mechanism to PD-1 inhibitors is yet to be fully elucidated. Herein, we report the case of an 88-year-old man with G-CSF-producing spindle cell carcinoma who acquired resistance to PD-1/PD-ligand 1 (L1) inhibitor in an early setting after a remarkable response.

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  • Research explored the link between apolipoprotein (apo) levels after percutaneous coronary intervention (PCI) and long-term major adverse cardiac events (MACEs), revealing their potential prognostic value.
  • The study involved 241 patients over a mean follow-up period of about 5.7 years, where 78 experienced cardiovascular incidents, indicating a significant correlation between higher apo B levels and increased risk of MACEs.
  • Findings showed that apo B levels and the apo B/apo A1 ratio were more effective predictors of cardiac events than traditional lipid measurements like LDL-C levels, suggesting a shift in how we assess cardiovascular risk post-PCI.
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