Publications by authors named "Yoichi Kawamura"

Acute pancreatitis in children in Japan is often caused by an anatomical abnormality of the pancreatic and bile duct, resulting in fever, abdominal pain, vomiting, diarrhea, and other symptoms. Crohn's disease, however, is a chronic granulomatous inflammatory bowel disease with ulcerative lesions of the intestinal tract of unknown cause that occurs mainly in young people, with symptoms similar to those of acute pancreatitis. We report a case of acute pancreatitis diagnosed in a patient not only with incomplete fusion of the pancreatic duct but also with Crohn's disease.

View Article and Find Full Text PDF

Introduction: The neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) have been reported to be a predictor for intravenous immunoglobulin (IVIG) resistance in patients with Kawasaki disease (KD) recently. The objective of the present study was to elucidate the predictive validity of this new marker in a multicenter study.

Materials And Methods: We retrospectively reviewed the clinical records of 520 consecutive KD patients (development data set) and 332 subsequent patients (validation data set) at 7 hospitals in Japan.

View Article and Find Full Text PDF

Background: Neutrophils contribute to the clearance of pathogens through the formation of neutrophil extracellular traps (NETs) in a process known as NETosis, but the excessive release of NETs has been reported to be involved in the pathogenesis of various diseases, including vasculitis, by inducing tissue injury. The aim of the present study was to investigate whether or not NETosis is enhanced in the acute phase of Kawasaki disease (KD).

Methods: After neutrophils isolated from the peripheral blood of patients with KD and healthy control (HC) were cultured in vitro, the degree of spontaneous NETosis was evaluated by measuring the number of NETs formed and the titers of cell-free DNA (cfDNA) and neutrophil elastase (NE)-DNA complex.

View Article and Find Full Text PDF

Importance: Few studies with sufficient statistical power have shown the association of the z score of the coronary arterial internal diameter with coronary events (CE) in patients with Kawasaki disease (KD) with coronary artery aneurysms (CAA).

Objective: To clarify the association of the z score with time-dependent CE occurrence in patients with KD with CAA.

Design, Setting, And Participants: This multicenter, collaborative retrospective cohort study of 44 participating institutions included 1006 patients with KD younger than 19 years who received a coronary angiography between 1992 and 2011.

View Article and Find Full Text PDF

Background: A Japanese nationwide survey has reported that Down syndrome (DS) is a less-frequently occurring comorbidity in Kawasaki disease (KD). Although altered immune responses are frequently observed in DS, no studies have focused on the treatment response and risk for coronary artery abnormalities (CAA) in DS patients with KD. The aim of this study was therefore to evaluate the clinical manifestations, treatment response and prevalence of CAA in DS with KD.

View Article and Find Full Text PDF

Background: We recently reported that the combination of the neutrophil-to-lymphocyte ratio (NLR) and the platelet-to-lymphocyte ratio (PLR) is a novel and useful predictor of intravenous immunoglobulin (IVIG)-resistance in Kawasaki disease (KD). In the present study, to evaluate the effectiveness of the new risk score, we compared its predictive validity to that of previously reported risk scores.

Materials And Methods: The laboratory records of 437 patients with KD before IVIG therapy were retrospectively analyzed, and the IVIG-responsive (n = 344) and IVIG-resistant (n = 93) patients were compared.

View Article and Find Full Text PDF

Abnormal urinary findings, such as sterile pyuria, proteinuria, and microscopic hematuria, are often seen in the acute phase of Kawasaki disease (KD). We investigated the potential significance of urinary lactate dehydrogenase (U-LDH) activity and its isozyme patterns in KD. Total U-LDH activity and its isozymes (U-LDH1-5) levels were compared among 120 patients with KD, 18 patients with viral infection (VI), and 43 patients with upper urinary tract infection (UTI) and additionally compared between intravenous immunoglobulin (IVIG) responders ( = 89) and nonresponders ( = 31) with KD.

View Article and Find Full Text PDF

Although some studies have attempted to find useful prognostic factors in hypertrophic cardiomyopathy (HCM), those results are not fully helpful for use in actual clinical practice. Furthermore, several genetic abnormalities associated with HCM have been identified. However, the genotype-phenotype correlation in HCM remains to be elucidated.

View Article and Find Full Text PDF

The laboratory records of 405 patients with Kawasaki disease before and after intravenous immunoglobulin (IVIG) therapy were compared between the IVIG-responsive (n = 320) and IVIG-resistant (n = 85) groups. A high neutrophil-to-lymphocyte ratio and a high platelet-to-lymphocyte ratio before IVIG, especially when combined, were useful predictors for IVIG resistance in Kawasaki disease.

View Article and Find Full Text PDF

We describe the case of a 15-year-old boy with a history of Fontan operation and multiple intrahepatic tumors. Computed tomography showed multiple hepatic nodules with arterial enhancement. Because hepatocellular carcinoma (HCC) was not detected on biopsies and tumor markers were normal, progress was monitored on imaging.

View Article and Find Full Text PDF

Intravenous immunoglobulin (IVIG) therapy is widely recognized as standard treatment for Kawasaki disease(KD). However, about 20 % of KD patients are resistant to IVIG and are considered to be a high risk group for coronary artery lesions (CAL). Ulinastatin(UTI) is one of the neutrophil elastase inhibitors used for patients with pancreatitis or circulatory shock, and several studies have shown its efficacy for KD.

View Article and Find Full Text PDF

Mutations of BMPR2 and other TGF-β superfamily genes have been reported in pulmonary arterial hypertension (PAH). However, 60-90% of idiopathic PAH cases have no mutations in these genes. Recently, the expression of NOTCH3 was shown to be increased in the pulmonary artery smooth muscle cells of PAH patients.

View Article and Find Full Text PDF

Background: Some potential biomarkers have been reported recently in patients with pulmonary arterial hypertension (PAH), but the most clinically useful among these potential biomarkers, especially in childhood PAH, has not been identified. Therefore, this study investigated which biomarker is useful in assessing severity of and patient prognosis in childhood idiopathic PAH (IPAH)/heritable PAH (HPAH).

Methods And Results: Fifty-nine patients who were younger than 16 years at onset of IPAH/HPAH were selected.

View Article and Find Full Text PDF

Objective: The purpose of this study was to develop a checklist of items that describes and measures the quality of reports of interventional trials assessing spa therapy.

Methods: The Delphi consensus method was used to select the number of items in the checklist. A total of eight individuals participated, including an epidemiologist, a clinical research methodologist, clinical researchers, a medical journalist, and a health fitness programmer.

View Article and Find Full Text PDF

Background: Markedly activated neutrophils or higher plasma levels of neutrophil elastase are involved in the poor response to intravenous immunoglobulin (IVIG) and the formation of coronary artery lesions (CAL) in patients with acute Kawasaki disease. We hypothesized that ulinastatin (UTI), by both direct and indirect suppression of neutrophils, would reduce the occurrence of CAL.

Methods And Results: We retrospectively analyzed the clinical records of patients with Kawasaki disease between 1998 and 2009.

View Article and Find Full Text PDF

Sarcoplasmic reticulum (SR) Ca release has been shown not to be the predominant mechanism responsible for excitation-contraction (E-C) coupling in fetal myocytes. However, most of the studies have been conducted either on primary cultures or acutely isolated cells, in which an apparent reduction of ryanodine receptor density have been reported. We aimed to elucidate the contribution of SR Ca release and Ca transporters on sarcolemmal channels to Ca transients in fetal mouse whole hearts.

View Article and Find Full Text PDF

Background: It is generally accepted that Ca(2+)-induced Ca(2+) release is not the predominant mechanism during embryonic stages. Most studies have been conducted either on primary cultures or acutely isolated cells, in which an apparent reduction of ryanodine receptor density and alterations in the cell shape have been reported. The aim of the present study was to investigate developmental changes in Ca(2+) transients using whole hearts of mouse embryos and neonates.

View Article and Find Full Text PDF

We developed a brief scale to evaluate communication ability of the demented elderly. This scale assesses not only abilities related to overall communication such as verbal function, judgment and emotional function, but also non-verbal communication such as eye-contact, nodding and smiling. The scale places little burden on the demented elderly subject and takes only a few minutes to perform, even if the dementia is severe.

View Article and Find Full Text PDF