Publications by authors named "Ken Yoshimura"

This report details a documented case of fatal King cobra (Ophiophagus hannah) envenomation in the Philippines. A 46-year-old woman from a mountainous town in Leyte was bitten on her left thigh by a snake. Despite receiving prompt medical attention, including administration of fluids and oxygen, she went into arrest and succumbed within 2.

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We report here on the facile synthesis of amino- and alkoxy-λ-iodanes supported by a benziodoxole (BX) template and their use as arynophiles. The amino- and alkoxy-BX derivatives can be readily synthesized by reacting the respective amines or alcohols with chlorobenziodoxole in the presence of a suitable base. Unlike previously known nitrogen- and oxygen-bound iodane compounds, which have primarily been employed as electrophilic group transfer agents or oxidants, the present amino- and alkoxy-BX reagents manifest themselves as nucleophilic amino and alkoxy transfer agents toward arynes.

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Snakebite envenoming is a potentially life-threatening global public health issue with Bangladesh having one of the highest rates of snakebite cases. The Bede, a nomadic ethnic group in Bangladesh, traditionally engages in snake-related business such as snake charming. The Bede relies on their own ethnomedicinal practitioners for snakebite treatment while there is a lack of concrete evidence on the effectiveness of such ethnomedicinal treatment.

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Article Synopsis
  • This study reviews snakebite incidents in Japan caused by exotic pet snakes from 2000 to 2022, finding 11 recorded cases from various snake families.
  • Most victims were male, all suffered hand injuries, and none resulted in fatalities, although serious complications like respiratory failure and acute kidney injury were noted.
  • The study suggests the need for better preparedness in emergency rooms for treating exotic snake bite victims and recommends implementing a reporting system for comprehensive tracking of snakebite cases in Japan.
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  • - The study examined the structure of different types of lingual papillae in the red ruffed lemur, revealing variations in size and arrangement, particularly among filiform, foliate, fungiform, and vallate papillae.
  • - Using light and scanning electron microscopy, researchers identified specific features like the size differences of filiform papillae and the Y-shaped arrangement of vallate papillae on the tongue.
  • - The findings indicate similarities in tongue structure with other lemur species, highlighting evolutionary insights and the impact of diverse diets on the morphology of these papillae.
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Background: The treatment guidelines for acute Kawasaki disease (KD) have been revised several times. Moreover, the criterion used to define coronary artery abnormalities (CAAs) has changed from the coronary artery's internal diameter to the Z-score. Treatment for KD and methods for evaluating CAAs vary between hospitals, so we investigated the actual status of acute KD treatment and development of CAAs under the 2012 Japanese treatment guidelines for acute KD.

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Gold nanoparticles (AuNPs) are often used for biosensing. In particular, aptamer-modified AuNPs are often used for colorimetric molecular detection, where target molecule-induced AuNP aggregates can be recognized by a color change from red to blue. However, non-specific aggregation could be induced by various compounds, leading to false-positive results.

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Objective data mainly from the comparative anatomy of various organs related to human speech and language is considered to unearth clues about the mechanisms behind language development. The two organs of the larynx and hyoid bone are considered to have evolved towards suitable positions and forms in preparation for the occurrence of the large repertoire of vocalization necessary for human speech. However, some researchers have asserted that there is no significant difference of these organs between humans and non-human primates.

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Article Synopsis
  • - The study analyzed 2,348 death cases of children and adolescents in Japan from 2014 to 2016, finding that 18.2%-21.0% of deaths were identified based on demographic surveys, with 27.2% resulting from external factors or unknown causes.
  • - The review indicated a notable proportion of preventable deaths (25%) and suggested the need for better evaluation of suspected child maltreatment cases, which accounted for 5%.
  • - Challenges were identified in establishing a comprehensive Child Death Review system due to the high volume of cases and the need for improved verification processes across various organizations.
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Coronavirus disease 2019 (COVID-19) is a highly transmissible pandemic disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The characteristics of the disease include a broad range of symptoms from mild to serious to death, with mild pneumonia to acute respiratory distress syndrome and complications in extrapulmonary organs. Taste impairment and salivary dysfunction are common early symptoms in COVID-19 patients.

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  • The study focused on the prevalence of β-thalassemia and hemoglobinopathies among university students and ready-made garment workers in Bangladesh, addressing a gap in research in this area.
  • Conducted from April to August 2018, the research included 989 participants, wherein diagnoses were made through blood samples and capillary Hb-electrophoresis.
  • Results revealed that 13.6% of participants were carriers of thalassemia or other hemoglobin disorders, with the Hb-E trait being the most common, suggesting the need for enhanced public health initiatives for this population group.
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Kawasaki disease (KD) is a systemic vasculitis with an unknown etiology affecting young children. Although intravenous immunoglobulin (IVIG) plus acetylsalicylic acid is effective in most cases, approximately 10-20% of patients do not respond to this therapy. An 8-month-old boy was admitted to a local hospital with the presumptive diagnosis of KD.

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Gold nanoparticles (AuNPs) are commonly used in biosensing applications. In this study, AuNPs were synthesized by using reduced bovine serum albumin (rBSA) as the reducing agent. The rBSA conjugated with AuNPs via Au-Sulfur interactions to form rBSA-functionalized AuNPs (rBSA-AuNPs).

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To investigate intravital morphological features of the broader area of the lingual mucosa in clinically healthy subjects, and to attempt to evaluate subclinical conditions, we evaluated detailed intravital morphological features of the lingual mucosa using our newly developed oral contact mucoscopy techniques. Clinically healthy subjects (female: 19-22 years, average age: 20.27 years, and n = 28) were enrolled.

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We observed the morphology of the lingual papillae (filiform, fungiform, foliate, and vallate) and their underlying connective tissue cores (CTCs) in Abyssinian black-and-white colobus monkeys using light and scanning electron microscopy. The tongues of both juvenile and senescent individuals were relatively short in the rostro-caudal direction, with a rounded apex. Lingual tori were absent.

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To clarify the role of the primate tongue as a means to better understand the evolution of oral function among primates - an example of adaptation within the restricted phylogenetic group - we review the morphological knowledge of the tongues of extant primates in relation to phylogenetic classification. Prosimians tongues are more effective than those of Haplorhini for taking up food with the tongue alone, because they are capable of fine movement when outside the oral cavity. However, the role of the tongue in food uptake has diminished when juxtaposed with progress in hand manipulation of food and tools in Haplorhini, especially with the manipulation of tools by Homininae.

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We observed the morphology of the papilla linguae (filiform, fungiform, foliate, and vallate) and underlying connective tissue cores (CTCs) in Pallas's squirrel (Callosciurus erythraeus thai) using light and scanning electron microscopy. The tongue was caudally elongated and lacked the lingual torus. Filiform papillae were densely distributed along the dorsal surface of the apex, and the rostral and caudal parts of the corpus, but were attenuated in the lingual root.

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Objective: To explore the risk factors for the development of sodium valproate (VPA)-induced renal tubular dysfunction for early diagnosis and treatment.

Study Design: The subjects were selected from patients who were diagnosed with epilepsy and administered VPA. Blood and spot urine samples were collected and measured the concentration of VPA, the level of serum phosphorus, serum uric acid, serum free carnitine, serum cystatin-c, and urine β2-microglobulin (BMG).

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  • A study confirmed the presence of the antibacterial protein BPIFB1 in the parotid glands of non-obese diabetic (NOD) mice, which model Sjögren's syndrome, revealing its protein expression levels for the first time.
  • BPIFB1 was found to be localized in secretory granules of NOD mice's parotid glands, but was almost absent in control mice, indicating a significant difference in expression.
  • Additionally, the protein was detectable in the saliva of NOD mice, suggesting its potential use as a diagnostic marker in further research.
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We coordinated anatomy and physiology lectures and practicals to facilitate an integrated understanding of morphology and function in a basic medical science program for dental students and to reduce the time spent on basic science education. This method is a means to provide the essential information and skills in less time. The overall impression was that the practice of joint central nervous system lectures and practicals was an efficient method for students, which suggests that joint lectures might also be useful for clinical subjects.

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Objective: To determine the utility of urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) as a sensitive biomarker for radiation-induced cellular DNA damage in children undergoing cardiac catheterization.

Study Design: We enrolled pediatric patients with congenital heart diseases requiring cardiac catheterization in conjunction with healthy children and children under sedation as control. Demographic, clinical, laboratory and invasive hemodynamic data, urinary 8-OHdG levels, and radiation exposure measurements were collected prospectively.

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Infantile malignant osteopetrosis (IMO) is a rare and fatal autosomal recessive condition characterized by a generalized increased in bone density. Hematopoietic stem cell transplantation (HSCT) is the only effective and rational therapy with achieving long-term disease-free survival. However, complications with HSCT for IMO remain unclear.

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Tandem solar cells have the potential to improve photon conversion efficiencies (PCEs) beyond the limits of single-junction devices. In this study, a triple-junction tandem design is demonstrated by employing three distinct organic donor materials having bandgap energies ranging from 1.4 to 1.

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  • * Filiform papillae were primarily located on the tip and front part of the tongue, while conical papillae were found at the back, with no foliate papillae observed.
  • * The unique shapes and sizes of these papillae, especially the filiform ones, suggest that the mink's tongue structure is adapted to its diet and semi-aquatic environment.
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