• Pediatric Infection and Vaccine
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• v.30 no.2
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• pp.97-103
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• 2023

Kawasaki disease (KD) is an acute, systemic inflammatory disorder that often targets coronary arteries. Being the common cause of acquired heart disease in children, timely diagnosis and intravenous immunoglobulin treatment are crucial. However, it is challenging for physicians to diagnose KD if it presents with atypical manifestations. We report the case of a 5-year-old boy who initially presented with appendicitis; after an appendectomy, he had a prolonged fever. He was finally diagnosed with atypical KD and successfully recovered after intravenous immunoglobulin treatment. Through a literature review, we found 21 cases of appendicitis associated with KD. In most cases, the patients were male with a mean age of 5.3 years. Most had higher proportions of incomplete KD and coronary artery complications than expected for typical KD. In conclusion, appendicitis could be a rare complication of KD; therefore, multidisciplinary cooperation and early recognition of atypical KD are essential for timely diagnosis.

• Clinical and Experimental Pediatrics
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• v.50 no.12
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• pp.1241-1246
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• 2007

Purpose : Recently, there has been several studies to clarify the pathogenesis of Kawasaki disease (KD) and the relations of VEGF and endostatin that act on vascular endothelial cells to the coronary artery complications. In this report, we measured serum levels of VEGF and endostatin in acute and subacute phases of KD to assess the change of these levels and the relations to the development of coronary artery lesions (CAL). Methods : Twenty six patients were diagnosed and treated for KD between January, 2001 and July, 2005 at Kangnam St. Mary's Hospital, the Catholic University of Korea. They were divided into those with and without CAL. Serum levels of VEGF and endostatin were measured during acute and subacute phases and compared to those measured in healthy and disease control groups. Results : Serum levels of VEGF were increased in KD but no differences were noted in KD with and without CAL. Serum levels of endostatin were decreased in the acute phase of KD, however they were recovered in the subacute phase of KD, regardless of CAL. The VEGF/endostatin ratio was increased in KD. KD without CAL showed a relative decrease in this ratio during the subacute phase. Significant positive correlations were found between serum VEGF and WBC count, VEGF and ESR, VEGF/endostatin ratio and ESR in the acute phase of KD. Conclusion : Analysis of factors influencing the vascular endothelium such as VEGF and endostatin will help to clarify the etiology of KD and the pathogenesis of CAL.

• Clinical and Experimental Pediatrics
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• v.53 no.4
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• pp.519-524
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• 2010

Purpose : To determine the efficacy of the N-terminal fragment of B-type natriuretic peptide (NT-proBNP) as a useful diagnostic method in children with incomplete Kawasaki disease (KD). Methods : Ninety-six patients who were diagnosed as having KD between January 2008 and June 2009 were enrolled in the study. American Heart Association recommendations for diagnosis were used, and patients were divided into the complete KD and incomplete KD groups. Blood tests including NT-proBNP were performed on admission day. Nineteen patients who had other febrile diseases other than KD were enrolled as control. Results : Thirty-three patients (34%) had incomplete KD. Change in the lips and oral cavity and conjunctivitis were the most common clinical features, but their frequency was lower than complete KD (76% vs 98%, 76% vs 90%). Patients with incomplete KD exhibited significantly higher NT-proBNP level than that of control ($1,407.7{\pm}1633.5pg/mL$ vs $126.2{\pm}135.5pg/mL$, $P$<0.001). An NT-proBNP cutoff value of 158 pg/mL provided a sensitivity of 81% and a specificity of 74% for diagnosis of incomplete KD. Conclusion : NT-proBNP assay can be clinically useful for the diagnosis of incomplete KD, if the patient has persistent fever, change in the lips and oral cavity, and conjunctivitis, and if the patient with those symptoms is suspected to have incomplete KD.

• Clinical and Experimental Pediatrics
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• v.50 no.2
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• pp.205-208
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• 2007

Purpose : Vascular endothelial cell damage and alteration of a fibrinolytic system was suggested to play a role in the development of coronary artery abnormalities in Kawasaki disease (KD). D-dimer is one of the markers of endothelial damage and fibrinolysis. We evaluated the clinical usefulness of D-dimer to differentiate KD from other febrile diseases and predict coronary artery abnormalities in KD. Methods : Sixty eight patients diagnosed as KD and twenty eight patients presented with acute febrile illnesses other than KD from September 2005 to July 2006 were included. Blood levels of D-dimer and various inflammatory markers were measured before treatment and the clinical course of KD was followed. Serial echocardiography was performed at the onset of disease and thereafter at a monthly interval for at least 2 months. Results : KD patients showed a higher D-dimer level than febrile controls, but the difference was not significant ($1.21{\pm}0.77{\mu}g/mL$ vs $0.92{\pm}0.71{\mu}g/mL$, P=0.083). Neither was the difference between KD patients who had coronary artery abnormalities and those who had not ($1.49{\pm}0.98{\mu}g/mL$ vs $1.15{\pm}0.71{\mu}g/mL$, P=0.169). D-dimer was significantly correlated with other inflammatory markers, such as C-reactive protein and erythrocyte sedimentation rate in both KD patients and febrile controls. Conclusion : D-dimer was not specific for KD. But it may be useful as an inflammatory marker to assess the severity of KD.

• Journal of applied mathematics & informatics
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• v.11 no.1_2
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• pp.81-108
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• 2003

We consider the Korteweg-de Vries-Burgers (KdVB) equation on the domain [0,11]. We derive a control law which guarantees $L^2$-global exponential stability, $H^3$-global asymptotic stability, and $H^3$-semiglobal exponential stability.

• 전기의세계
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• v.9
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• pp.56-57
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• 1962

우리나라 송전선로중 154송전선의 보호는 새로 거리단전기가 설치됨으로서 과거의 과전류단전방식으로부터 거리단전방식으로 일부 개선하게 되어 앞으로의 기대가 자못크다. 거리단전기는 KD 및 HZ형의 이종이나 그중 대부분은 KD형이다. K-D Relay는 Compensator Relay라고도 불리울 정도로 Compensator의 역할이 중요하다. 이글은 1. 접점동작기구, 2 이종단락개장 검출회로에 대해 서술하였다.

• Applied Biological Chemistry
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• v.50 no.4
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• pp.276-280
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• 2007

Buckwheat often causes severe allergic reactions in sensitive people. One of the major allergenic proteins in common buckwheat (Fagopyrum esculentum) has been found to be a BW10KD protein. In this study, we developed a PCR method to detect buckwheat ingredients in food using primers corresponding to the allergenic BW10KD gene. Five pairs of oligonucleotide primers successfully enabled PCR amplification of the specific regions of the genomic BW10KD DNA from buckwheat, but no amplification from seven other cereals and beans (barley, wheat, German millet, African millet, soybean, red bean, and black bean). The proposed PCR method was applied to analyze 12 processed foods (buckwheat flour, buckwheat noodle, buckwheat jelly, wheat noodle, instant noodle, black sesame gruels, sunsik, cookie, misutkaru, and three kinds of cereal); among them, only three samples including buckwheat flour, buckwheat noodle and buckwheat jelly showed a positive reaction to the detection. This PCR method was able to detect as little as 1 ng of common buckwheat DNA. This rapid and specific PCR method would be applicable to detect allergenic buckwheat ingredients in food.

• Pediatric Infection and Vaccine
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• v.23 no.2
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• pp.149-154
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• 2016

Although an association of Kawasaki disease (KD) with infectious agents has been suggested, none have been proven to cause KD. In this case study, we present a case of KD with concurrent onset of influenza and Mycoplasma pneumoniae (MP) infections. A 27-month-old boy presented with prolonged fever, cough, and rhinorrhea. During the initial testing, influenza A infection was identified, and he was treated with oseltamivir. Despite the antiviral therapy, the fever persisted, and he had cervical lymph node enlargement, bilateral conjunctival injection, fissured red lips, strawberry tongue, and erythematous skin lesions on the Bacillus Calmette-$Gu{\acute{e}}rin$ vaccination site. Thus, the patient was diagnosed with KD and was treated with intravenous immunoglobulin (IVIG). The result of the initial antimycoplasma immunoglobulin M (IgM) antibody testing and was positive, and an increased IgM titer from baseline was found in a repeat test. We reviewed the hypotheses on pathogens known to be associated with KD and the etiology of KD. Based on our findings, we suspect that symptoms of KD and coronary artery lesions can occur from various infections besides those caused by Mycoplasma species and influenza viruses.

• Clinical and Experimental Pediatrics
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• v.54 no.4
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• pp.157-162
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• 2011

Purpose: Exaggerated pro-inflammatory reactions during the acute phase of Kawasaki disease (KD) suggest the role of immune dysregulation in the pathogenesis of KD. We investigated the profiles of T regulatory cells and their correlation with the clinical course of KD. Methods: Peripheral blood mononuclear cells were collected from 17 KD patients during acute febrile and subacute afebrile phases. T cells expressing CD4, CD25, and Foxp3 were analyzed using flow cytometry, and the results were correlated with the clinical course of KD. Results: The percentage of circulating $CD4^+CD25^{high}Foxp3^+$ T cells among $CD4^+$ T cells was Significantly higher during the subacute afebrile phase than during the acute febrile phase ($1.10%{\pm}1.22%$ vs. $0.55%{\pm}0.53%$, P=0.049). Although levels of $CD4^+CD25^{low}Foxp3^+$ T cells and $CD4^+CD25^-Foxp3^+$ T cells were only slightly altered, the percentage of $CD4^+CD25^+Foxp3^-$ T cells among $CD4^+$ T cells was significantly lower during the subacute afebrile phase than during the acute febrile phase ($2.96%{\pm}1.95%$ vs. $5.64%{\pm}5.69%$, P=0.036). Consequently, the ratio of $CD25^{high}Foxp3^+$ T cells to $CD25^+Foxp3^-$ T cells was higher during the subacute afebrile phase than during the acute febrile phase ($0.45%{\pm}0.57%$ vs. $0.13%{\pm}0.13%$, P=0.038). Conclusion: Decreased $CD4^+CD25^{high}Foxp3^+$ T cells and/or an imbalanced ratio of $CD4^+CD25^{high}Foxp3^+$ T cells to $CD4^+CD25^+Foxp3^-$ T cells might playa role in KD development. Considering that all KD patients were treated with intravenous immunoglobulin (IVIG), recovery of $CD4^+CD25^{high}Foxp3^+$ T cells during the subacute afebrile phase could be a mechanism of IVIG.

• KSBB Journal
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• v.14 no.6
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• pp.724-730
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• 1999

Characteristics and enzyme activity comparison was made between urokinase isolated from urine and pro-urokinase separated from CHO(Chinese Hamster Ovary) cell culture broth. Both of purified urokinase and pro-urokinase resulted 54Kd single band in electrophoresis. Urokinase which was proved as a single molecule by gel filtration showed two separated 33Kd and 21Kd bands by 2-mercaptoethanol reduction. Isoelectric forcusing resulted same pl value of 8.6 for both of them. N-terminal amino acid sequence of urokinase after 159th Ile was Ile-Gly-Gly-Glu-Phe-Thr-Thr-Ile-Glu which was different from another N-terminal sequence of Ser-Asn-Glu-Leu-His-Gln-Val-Pro-Ser-Asn. Thrombolytic activities of both of them were propotional to the enzyme concentration. Urokinase showed thrombolytic activities in an short period of reaction time. Pro-urokinase, however, showed high thrombolytic activity for 2 hours or longer period of reaction time.