Publications by authors named "Yuji Ohnishi"

Background: Alarmins resulting from cell death or oxidative stress are involved in the development of Kawasaki disease (KD) vasculitis. In a previous study, we demonstrated the potential role of interleukin (IL)-33 as an alarmin in the development of KD vasculitis. Although edematous dissociation (necrotic change) of the tunica media is thought to be a major source of IL-33 in KD vasculitis, it has not yet been elucidated.

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Article Synopsis
  • Congenital pulmonary lymphangiectasia (CPL) is often fatal in newborns and is linked to fetal pulmonary venous obstruction; its exact effects remain unclear.
  • The case discusses an infant with secondary CPL resulting from total anomalous pulmonary venous connection (TAPVC) who experienced severe pulmonary hypertension post-surgery and ultimately died at 11 months.
  • Autopsy findings suggested complications like pulmonary arterial hypertrophy and significant changes in pulmonary lymphatics, highlighting the importance of considering CPL in patients with similar conditions and being careful with lung biopsy interpretations.
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Kawasaki disease (KD) is an acute, self-limiting, febrile systemic vasculitis of unknown cause associated with the development of coronary artery lesions (CALs) during childhood. Damage-associated molecular patterns (DAMPs) from cell death and oxidative stress have been shown to be involved in the development of KD vasculitis. Interleukin (IL)-33 is released from damaged endothelial cells and acts as a DAMP.

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Article Synopsis
  • Kawasaki disease (KD) is a serious childhood illness that can be treated with infliximab (IFX), but concerns exist about the timing of live vaccinations in relation to this therapy.
  • A study examined 48 children diagnosed with KD shortly after live vaccinations or BCG, finding that none of the eight who received IFX had vaccine-related infections.
  • The results suggest that the waiting period between live vaccinations and IFX treatment for KD might be shorter than currently recommended, indicating the need for further research to confirm safety.
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Marfan syndrome is an autosomal dominant genetic disorder of the fibrous connective tissue caused by pathogenic mutations in the fibrillin-1 gene. Neonatal Marfan syndrome is a rare type of Marfan syndrome that is genotypically and phenotypically different from classical Marfan syndrome and has a poor prognosis. Most patients with neonatal Marfan syndrome die during infancy due to severe and rapidly progressive cardiovascular disorders.

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Acute pericarditis is inflammation of the pericardium with or without pericardial effusion. In the pediatric population, most patients with acute pericarditis are diagnosed with idiopathic pericarditis. Herein, we present two children with idiopathic pericarditis who underwent immunological assessment of pericardial effusion for the first time.

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Balloon pulmonary valvuloplasty is a safe and effective treatment for isolated pulmonary valve stenosis. Several balloon catheters are available for this procedure in neonates and infants. However, obtaining additional vascular access for the double-balloon technique in this population is troublesome, and tricuspid valve injury is a concern.

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Diazoxide, a drug used to treat hyperinsulinemic hypoglycemia (HH), is associated with pulmonary hypertension (PH), as reported by the US Food and Drug Administration. However, no report has detailed the association between diazoxide dose and PH development. We report a case of an infant with HH, subsequently complicated by diazoxide-induced PH.

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Intravenous immunoglobulin (IVIG) therapy is a useful first-line treatment for Kawasaki disease (KD); however, 10-20% of patients fail to respond and require additional IVIG. Soluble CD163 (sCD163) is considered a biomarker for macrophage activation. There are no reports measuring serum sCD163 in KD patients.

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Background: Kawasaki disease (KD) is acute and self-limited vasculitis caused by unknown origin, and the critical complication in KD patients is coronary artery lesions (CALs). The endothelial glycocalyx is a network of membranes luminally covering the endothelium. This study aimed to evaluate the clinical utility of serum glycocalyx components as biomarkers of predicting the onset CALs in KD.

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Adrenocortical carcinoma (ACC) is a rare malignancy in childhood. Affected children with ACC mostly present with virilization, but not the pure form of Cushing's syndrome. A 9-year-old Japanese girl was hospitalized, because of the unstable emotions and excessive weight gain.

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Bacille de Calmette et Guerin (BCG) is the only licensed tuberculosis vaccine to prevent severe tuberculosis. The adverse events of BCG vaccination, including local reactions, lymphadenitis, osteomyelitis, tuberculid, and disseminated infection, have been reported. Two infants presented erythema at the inoculation site of BCG after the resolution of Kawasaki disease (K).

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Histone eviction and deposition are critical steps in many nuclear processes. The histone H3/H4 chaperone Asf1p is highly conserved and is involved in DNA replication, DNA repair, and transcription. To identify the factors concerned with anti-silencing function 1 (ASF1), we purified Asf1p-associated factors from the yeast Saccharomyces cerevisiae by a GST pull-down experiment, and mass spectrometry analysis was performed.

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