Publications by authors named "Yuhei Hamasaki"

The Japanese Guideline for the Diagnosis and Treatment of Allergic Diseases 2017 (JAGL 2017) includes a minor revision of the Japanese Pediatric Guideline for the Treatment and Management of Asthma 2012 (JPGL 2012) by the Japanese Society of Pediatric Allergy and Clinical Immunology. The section on child asthma in JAGL 2017 provides information on how to diagnose asthma between infancy and adolescence (0-15 years of age). It makes recommendations for best practices in the management of childhood asthma, including management of acute exacerbations and non-pharmacological and pharmacological management.

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Uniparental disomy (UPD) is defined as the inheritance of both homologs of a given genomic region from only one parent. The majority of UPD includes an entire chromosome. However, the extent of UPD is sometimes limited to a subchromosomal region (segmental UPD).

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A new version of the Japanese pediatric guideline for the treatment and management of bronchial asthma was published in Japanese at the end of 2011. The guideline sets the pragmatic goal for clinicians treating childhood asthma as maintaining a "well-controlled level" for an extended period in which the child patient can lead a trouble-free daily life, not forgetting the ultimate goal of obtaining remission and/or cure. Important factors in the attainment of the pragmatic goal are: (i) appropriate use of anti-inflammatory drugs; (ii) elimination of environmental risk factors; and (iii) educational and enlightening activities for the patient and caregivers regarding adequate asthma management in daily life.

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Article Synopsis
  • - The Japanese Guideline for the Diagnosis and Treatment of Allergic Diseases 2013 (JAGL 2013) focuses on asthma management in children aged 0-15, offering guidance on diagnosis, acute treatment, long-term care, and patient education for non-specialist doctors.
  • - JAGL 2013 emphasizes the importance of early diagnosis and intervention, particularly for children under 5, differing from the Global Initiative for Asthma Guideline (GINA) approach.
  • - The guideline encourages a clear management strategy involving medication adjustments based on asthma control levels, with a goal of complete control by minimizing triggers and properly using anti-inflammatory drugs.
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Purpose: Expression of imprinted genes is regulated by DNA methylation of differentially methylated regions (DMRs). Beckwith-Wiedemann syndrome is an imprinting disorder caused by epimutations of DMRs at 11p15.5.

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The Japanese Guideline for the Diagnosis and Treatment of Allergic Diseases 2013 (JAGL 2013) describes childhood asthma after the Japanese Pediatric Guideline for the Treatment and Management of Asthma 2012 (JPGL 2012) by the Japanese Society of Pediatric Allergy and Clinical Immunology. JAGL 2013 provides information on diagnosis by age group from infancy to puberty (0-15 years of age), treatment for acute exacerbations, long-term management by anti-inflammatory drugs, daily life guidance, and patient education to allow non-specialist physicians to refer to this guideline for routine medical treatment. JAGL differs from the Global Initiative for Asthma Guideline (GINA) in that JAGL emphasizes early diagnosis and intervention at <2 years and 2-5 years of age.

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  • Keratinocyte proliferation and differentiation are typically balanced, but this balance can be disrupted in wound healing and conditions like atopic dermatitis due to epithelial-mesenchymal interactions mediated by cytokines and growth factors.
  • Periostin, a protein involved in tissue structure, plays a significant role in promoting keratinocyte hyperproliferation during atopic dermatitis and is vital for reepithelialization in wound healing.
  • The study found that IL-1α from keratinocytes leads to IL-6 production from fibroblasts, and periostin is essential for this process, enhancing IL-6 levels and regulating keratinocyte behavior through a feedback mechanism linking the two proteins.
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We describe a 15-day-old newborn girl who was fed with formula milk that was accidentally diluted with sake (Japanese wine prepared from fermented rice). The clinical features were flushed skin, tachycardia and low blood pressure indicating circulatory failure, somnolence and metabolic acidosis without hypoglycemia. The serum ethanol concentration was 43.

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Acute encephalopathy with biphasic seizures and late reduced diffusion was recently established clinicoradiologically as an encephalopathy syndrome. The outcome of this encephalopathy is characterized by a low mortality rate and high incidence of neurologic sequelae. Although the exact pathogenesis of this encephalopathy is uncertain, excitotoxic injury with delayed neuronal death is proposed.

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Formyl-Met-Leu-Phe-OH (fMLP) binds to formyl peptide receptors, FPR1 and FPR2, and evokes migration and superoxide anion production in human neutrophils. To obtain a more effective and selective ligand, fMLP analogs in which the Phe residue was substituted with four isomers of cyclopropanephenylalanine were synthesized. While Z-isomer peptides induced both migration and superoxide anion production, E-isomer peptides elicited only chemotaxis.

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  • Acute promyelocytic leukemia (APL) is a rare but malignant form of leukemia usually caused by a specific genetic fusion; it's more common in adults than children.
  • A 1-year-old boy was diagnosed with APL after presenting with a mass in the jaw, where imaging suggested it could be a serious tumor.
  • Treatment with tretinoin was successful, and there have been no signs of recurrence after one year.
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The tulobuterol patch (TP) is a beta(2)-adrenergic agonist with a favorable pharmacokinetic profile used for asthma management in Japan. Because it contains tulobuterol in a molecular, crystallized form that is gradually absorbed percutaneously, TP exerts a prolonged bronchodilator effect exceeding 24 hours. Although it is a well-established treatment for asthma and wheezing, few studies have investigated whether it can reduce or prevent the symptoms associated with upper respiratory tract infections (URTIs) in young children.

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Article Synopsis
  • The tulobuterol patch (TP) is a long-lasting medication for managing asthma in children, offering bronchodilation for over 24 hours.
  • A year-long study was conducted with young children (0.5-3 years) who had mild-to-moderate asthma to see if TP could help when upper respiratory tract infection (URTI) symptoms appeared.
  • Results showed that children using the TP experienced faster symptom relief and lower overall respiratory symptom scores compared to those using a placebo.
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Background: Coronary artery lesions (CAL) are a serious complication of Kawasaki disease (KD). The increased serum E-selectin level during the acute phase of KD and the association of E-selectin gene (SELE) polymorphisms with the prevalence of coronary artery disease in adults suggest a possible association between SELE polymorphisms and the development of CAL in KD patients.

Methods: The subjects consisted of 177 KD patients, including 59 with and 118 without CAL, and 305 healthy controls.

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Airway remodeling in bronchial asthma is characterized by epithelial detachment and proliferation, subepithelial fibrosis, increased smooth muscle mass, and goblet cell hyperplasia. These features are mediated by T-helper type 2 (Th2) cytokines including interleukin (IL)-13. However, the direct effects of IL-13 on the functions of airway epithelial cells are not fully understood.

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The Japanese Guideline for the Diagnosis and Treatment of Allergic Diseases 2010 (JAGL 2010) describes childhood asthma based on the Japanese Pediatric Guideline for the Treatment and Management of Asthma 2008 (JPGL 2008) published by the Japanese Society of Pediatric Allergy and Clinical Immunology. JAGL 2010 provides information on diagnosis by age groups from infancy to puberty, treatment for acute exacerbations, long-term management by medication, daily life guidance, and patient education to allow physicians, not specialized in childhood asthma, to refer to this guideline for routine medical treatment. JAGL differs from the Global Initiative for Asthma Guideline (GINA) in that the former emphasizes long-term management of childhood asthma based on asthma severity and early diagnosis and intervention at <2 years and 2-5 years of age.

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Autism spectrum disorder (ASD) has a close relationship with epilepsy. A previous study showed complex partial seizures (CPS) to be the most frequent type of epileptic seizures in cases of ASD. Patients with childhood-onset CPS were retrospectively studied to investigate the prevalence of ASD and to characterize the association between CPS and ASD.

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Objective: In Japan, percutaneous endoscopic gastrostomy (PEG) has been used mainly in patients with stroke and dementia, who undertake oral ingestion voluntarily. We have used PEG for patients with various diseases in Saga Medical School Hospital, including postoperative recovery, malignant disease, and neurodegenerative diseases. This study evaluated prognostic factors in these patients regarding long-term survival.

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Autism spectrum disorder (ASD) has a close relationship with epilepsy. This study retrospectively examined patients with epilepsy associated with ASD. Among the 519 patients with epilepsy, 79 patients (15.

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Abstract The fourth version of the Japanese Pediatric Guidelines for the Treatment and Management of Bronchial Asthma 2008 (JPGL 2008) was published by the Japanese Society of Pediatric Allergy and Clinical Immunology in December 2008. In JPGL 2008, the recommendations were revised on the basis of the JPGL 2005. The JPGL 2008 is different to the Global Initiative for Asthma guideline in that it contains the following items: a classification system of asthma severity; recommendations for long-term management organized by age; a special mention of infantile asthma; and an emphasis on prevention and early intervention.

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An association has long been suspected between febrile seizures and interleukin-1beta, the most potent endogenous pyrogen. Interleukin-1beta production increases after double-stranded RNA stimulation in leukocytes of febrile seizure patients. To elucidate the genetics of the immune response, the gene expression pattern after double-stranded RNA stimulation was investigated using DNA microarray.

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