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Original Article
Cardiology
Changes of Bax, Bcl-2, CCR-2, MCP-1, and TGF-β1 genes in the left ventricle of spontaneously hypertensive rat after losartan treatment
Hyeryon Lee, Kwan Chang Kim, Young Mi Hong
Clin Exp Pediatr. 2019;62(3):95-101.   Published online October 24, 2018

Purpose: Increased apoptosis was recently found in the hypertrophied left ventricle of spontaneously hypertensive rats (SHRs). Although the available evidence suggests that apoptosis can be induced in cardiac cells by various insults including pressure overload, cardiac apoptosis appears to result from an exaggerated local production of angiotensin in adult SHRs. Altered expressions of Bcl associated X (Bax), Bcl-2, chemokine receptor...
Change of voltage-gated potassium channel 1.7 expressions in monocrotaline-induced pulmonary arterial hypertension rat model
Hyeryon Lee, Kwan Chang Kim, Young Mi Hong
Clin Exp Pediatr. 2018;61(9):271-278.   Published online September 15, 2018

Purpose: Abnormal potassium channels expression affects vessel function, including vascular tone and proliferation rate. Diverse potassium channels, including voltage-gated potassium (Kv) channels, are involved in pathological changes of pulmonary arterial hypertension (PAH). Since the role of the Kv1.7 channel in PAH has not been previously studied, we investigated whether Kv1.7 channel expression changes in the lung tissue of a monocrotaline...
Differentiation between incomplete Kawasaki disease and secondary hemophagocytic lymphohistiocytosis following Kawasaki disease using N-terminal pro-brain natriuretic peptide
Jung Eun Choi, Yujin Kwak, Jung Won Huh, Eun-Sun Yoo, Kyung-Ha Ryu, Sejung Sohn, Young Mi Hong
Clin Exp Pediatr. 2018;61(5):167-173.   Published online May 28, 2018
Purpose

Hemophagocytic lymphohistiocytosis (HLH) is a hyperinflammatory syndrome with many causes, including Kawasaki disease (KD). The purpose of this study was to identify the laboratory tests needed to easily differentiate KD with HLH from incomplete KD alone.

Methods

We performed a retrospective study on patients diagnosed with incomplete KD and incomplete KD with HLH (HLH-KD) between January 2012 and March 2015. We compared...

C-reactive protein and N-terminal pro-brain natriuretic peptide discrepancy: a differentiation of adenoviral pharyngoconjunctival fever from Kawasaki disease
Jung Eun Choi, Hee Won Kang, Young Mi Hong, Sejung Sohn
Clin Exp Pediatr. 2018;61(1):12-16.   Published online January 22, 2018
Purpose

To differentiate adenoviral pharyngoconjunctival fever (PCF) from acute Kawasaki disease (KD) using laboratory tests before results of virus-real time polymerase chain reaction and ophthalmologic examination are obtained.

Methods

Baseline patient characteristics and laboratory measurements were compared between 40 patients with adenovirus infection and 123 patients with KD.

Results

The patients with adenovirus infection were generally older than those with KD (median: 3.9 years vs....

Apoptosis and remodeling in adriamycin-induced cardiomyopathy rat model
Young Mi Hong, Hyeryon Lee, Min-Sun Cho, Kwan Chang Kim
Clin Exp Pediatr. 2017;60(11):365-372.   Published online November 27, 2017
Purpose

The mechanism for the pathogenesis of adriamycin (ADR)-induced cardiomyopathy is not yet known. Different hypotheses include the production of free radicals, an interaction between ADR and nuclear components, and a disruption in cardiac-specific gene expression. Apoptosis has also been proposed as being involved in cardiac dysfunction. The purpose of this study was to determine if apoptosis might play a role...

The effect of sildenafil on right ventricular remodeling in a rat model of monocrotaline-induced right ventricular failure
Hyun Kyung Bae, Hyeryon Lee, Kwan Chang Kim, Young Mi Hong
Clin Exp Pediatr. 2016;59(6):262-270.   Published online June 30, 2016
Purpose

Pulmonary arterial hypertension (PAH) leads to right ventricular failure (RVF) as well as an increase in pulmonary vascular resistance. Our purpose was to study the effect of sildenafil on right ventricular remodeling in a rat model of monocrotaline (MCT)-induced RVF.

Methods

The rats were distributed randomly into 3 groups. The control (C) group, the monocrotaline (M) group (MCT 60 mg/kg) and the...

Uveitis as an important ocular sign to help early diagnosis in Kawasaki disease
Han Seul Choi, Seul Bee Lee, Jung Hyun Kwon, Hae Soon Kim, Sejung Sohn, Young Mi Hong
Clin Exp Pediatr. 2015;58(10):374-379.   Published online October 21, 2015
Purpose

Incomplete Kawasaki disease (KD) is frequently associated with delayed diagnosis and treatment. Delayed diagnosis leads to increasing risk of coronary artery aneurysm. Anterior uveitis is an important ocular sign of KD. The purpose of this study was to assess differences in laboratory findings, including echocardiographic measurements, clinical characteristics such as fever duration and treatment responses between KD patients with and...

Associations of matrix metalloproteinase (MMP)-8, MMP-9, and their inhibitor, tissue inhibitor of metalloproteinase-1, with obesity-related biomarkers in apparently healthy adolescent boys
Youn Ho Shin, Ki Eun Kim, Yong-Jae Lee, Jae-Hwan Nam, Young Mi Hong, Hye-Jung Shin
Clin Exp Pediatr. 2014;57(12):526-532.   Published online December 31, 2014
Purpose

Matrix metalloproteinases (MMPs) have been implicated in atherosclerosis, and therefore, are considered risk factors for metabolic dysfunction in adults. However, there is little data on circulating levels of MMPs and tissue inhibitors of MMPs (TIMPs) with regard to obesity-related biomarkers in the general adolescent population. In the present study, we determined the associations of MMP-8, MMP-9, and TIMP-1 levels and...

Clinical characteristics and serum N-terminal pro-brain natriuretic peptide as a diagnostic marker of Kawasaki disease in infants younger than 3 months of age
Hyun Kyung Bae, Do Kyung Lee, Jung Hyun Kwon, Hae Soon Kim, Sejung Sohn, Young Mi Hong
Clin Exp Pediatr. 2014;57(8):357-362.   Published online August 25, 2014
Purpose

The incidence of Kawasaki disease (KD) is rare in young infants (less than 3 months of age), who present with only a few symptoms that fulfill the clinical diagnostic criteria. The diagnosis for KD can therefore be delayed, leading to a high risk of cardiac complications. We examined the clinical characteristics and measured the serum levels of N-terminal pro-brain natriuretic...

The relationships of body mass index, waist-to-height ratio, and body fat percentage with blood pressure and its hemodynamic determinants in Korean adolescents: a school-based study
Na Young Kim, Young Mi Hong, Jo Won Jung, Nam Su Kim, Chung Il Noh, Young-Hwan Song
Clin Exp Pediatr. 2013;56(12):526-533.   Published online December 20, 2013
Purpose

Obesity is an important risk factor for hypertension in adolescents. We investigated the relationship of obesity-related indices (body mass index [BMI], waist-to-height ratio [WHR], and body fat percentage [%BF]) with blood pressure and the hemodynamic determinants of blood pressure in Korean adolescents.

Methods

In 2008, 565 adolescents, aged 12-16 years, were examined. The %BF of the participants was measured by bioelectrical impedance...

An inhibitory effect of tumor necrosis factor-alpha antagonist to gene expression in monocrotaline-induced pulmonary hypertensive rats model
Jung Hyun Kwon, Kwan Chang Kim, Min-Sun Cho, Hae Soon Kim, Sejung Sohn, Young Mi Hong
Clin Exp Pediatr. 2013;56(3):116-124.   Published online March 18, 2013
Purpose

Tumor necrosis factor (TNF)-α is thought to contribute to pulmonary hypertension. We aimed to investigate the effect of infliximab (TNF-α antagonist) treatment on pathologic findings and gene expression in a monocrotaline-induced pulmonary hypertension rat model.

Methods

Six-week-old male Sprague-Dawley rats were allocated to 3 groups: control (C), single subcutaneous injection of normal saline (0.1 mL/kg); monocrotaline (M), single subcutaneous injection of monocrotaline...

Review Article
Cardiomyopathies in children
Young Mi Hong
Clin Exp Pediatr. 2013;56(2):52-59.   Published online February 25, 2013

Cardiomyopathy (CMP) is a heterogeneous disease caused by a functional abnormality of the cardiac muscle. CMP is of 2 major types, dilated and hypertrophic, and is further classified as either primary or secondary. Secondary CMP is caused by extrinsic factors, including infection, ischemia, hypertension, and metabolic disorders. Primary CMP is diagnosed when the extrinsic factors of secondary CMP are absent....

Original Article
Epidemiology of Kawasaki disease in infants 3 months of age and younger
Eun Jung Lee, Yong Won Park, Young Mi Hong, Joon Sung Lee, Ji Whan Han
Clin Exp Pediatr. 2012;55(6):202-205.   Published online June 21, 2012
Purpose

This study investigated the epidemiology of Kawasaki disease (KD) in infants ≤3-month-old.

Methods

To study the epidemiology of KD in Korea, data for 27,851 KD patients were collected on a 3-year basis between 2000 and 2008 in a retrospective survey. From this, data for 609 KD patients ≤3-month-old were analyzed and compared with the data for KD patients >3-month-old.

Results

The 609 KD patients...

Clinical characteristics of obese boys and girls in a high school: focused on abdominal fat indices, fatty liver and carotid intima-media thickness
Jung Eun Oh, Jiyoung Jung, Hae Soon Kim, Young Mi Hong, Jung Hyun Yoo, Young Whan Song, Jo Won Jung, Nam Su Kim, Chung Il Noh
Clin Exp Pediatr. 2011;54(7):292-297.   Published online July 31, 2011
Purpose

Our study aimed to evaluated sex differences in clinical features of obese high school students.

Methods

One hundred three obese high school students (body mass index [BMI]≥85th percentile) and 51 control students (BMI<85th percentile) were enrolled in this study. Anthropometric measurements were performed. Fasting serum glucose, insulin, aspartate aminotransferase, alanine aminotransferase, total cholesterol, triglyceride, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C),...

Mycoplasma pneumoniae infection in patients with Kawasaki disease
Mi Na Lee, Jie Hae Cha, Hye Mi Ahn, Jeong Hyun Yoo, Hae Soon Kim, Sejung Sohn, Young Mi Hong
Clin Exp Pediatr. 2011;54(3):123-127.   Published online March 31, 2011
Purpose

Kawasaki disease (KD) is the main cause of acquired heart disease in children. In addition to cardiovascular involvement, many complications have been recognized in KD. However, respiratory complications have been rarely reported. We investigated the differences in clinical characteristics, laboratory findings, radiography findings, and echocardiography findings of Mycoplasma pneumoniae infection and other types of pneumonia in KD patients.

Methods

Among 358 patients...

Enterovirus 71-associated hand, foot and mouth diseases with neurologic symptoms, a university hospital experience in Korea, 2009
Hye Kyung Cho, Na Yong Lee, Hyunju Lee, Hae Soon Kim, Jeong Wan Seo, Young Mi Hong, Seung Joo Lee, Sun Wha Lee, Doo Sung Cheon, Ji Young Hong, Byung Hak Kang, Jong-Hyun Kim, Kyung-Hyo Kim
Clin Exp Pediatr. 2010;53(5):639-643.   Published online May 31, 2010
Purpose

Hand-foot-mouth disease (HFMD) is a common viral illness in children, which is usually mild and self-limiting. However, in recent epidemics of HFMD in Asia, enterovirus 71 (EV71) has been recognized as a causative agent with severe neurological symptoms with or without cardiopulmonary involvement. HFMD was epidemic in Korea in the spring of 2009. Severe cases with complications including death have...

Body composition by bioelectrical impedance analysis in children below 7 years old
Jiyoung Jung, Han Wool Kim, Tae Hyun Kim, Young Mi Hong
Clin Exp Pediatr. 2010;53(3):341-348.   Published online March 15, 2010
Purpose : Body composition is important to define and manage obesity and undernutrition. Obesity is a significant health problem with medical and psychological consequences for children and adolescents. Body composition analysis (BIA) is a simple, rapid, noninvasive, and reproducible technique. However, comparative analysis of body composition has not been done in young children below 7 years old. The aim of...
Left ventricular dysfunction measured by tissue Doppler imaging and strain rate imaging in hypertensive adolescents
Hye Mi Ahn, Sun Ok Jung, Jung Hyun Kwon, Young Mi Hong
Clin Exp Pediatr. 2010;53(1):72-79.   Published online January 15, 2010
Purpose : Left ventricular (LV) hypertrophy and impaired diastolic function may occur early in systemic hypertension. Diastolic dysfunction is associated with increased cardiovascular risk. Tissue Doppler imaging (TDI)-derived tissue velocity and strain rate are new parameters for assessing diastolic dysfunction. The aim of this study is to determine whether TDI and strain rate imaging (SRI) would improve the ability to...
Serum interleukin-6, tumor necrosis factor-α and adiponectin levels in Kawasaki disease
Jung Ahn, Han Gyu Kim, Sejung Sohn, Young Mi Hong
Clin Exp Pediatr. 2010;53(1):41-47.   Published online January 15, 2010
Purpose : Adiponectin is an endogenous modulator of vascular remodeling that suppresses vascular inflammation. However, the role of adiponectin in Kawasaki disease (KD) has not been elucidated. The purpose of this study is to investigate the correlation between serum adiponectin level and several parameters, such as interleukin (IL)-6, tumor necrosis factor (TNF)-α, lipid profile, and C reactive protein (CRP), and...
Review Article
Metabolic syndrome in children and adolescents
Young Mi Hong
Clin Exp Pediatr. 2009;52(7):737-744.   Published online July 15, 2009
Metabolic syndrome (MS) in children and adolescents has become a global public health problem. MS among Korean children and adolescents has been increasing significantly over the past decade. This paper aims to provide the currently available information on the MS in children and adolescents. This review focuses on the definition, diagnostic criteria, epidemiology and pathophysiology which may be helpful for...
Original Article
Effect of endothelin receptor blockade on monocrotaline-induced pulmonary hypertension in rats
Kyoung Ah Lim, Jung Yun Shim, Sang Ho Cho, Kwan Chang Kim, Jae Jin Han, Young Mi Hong
Clin Exp Pediatr. 2009;52(6):689-695.   Published online June 15, 2009
Purpose : To examine the effect of bosentan, a dual endothelin receptor (ER) antagonist, on the development of monocrotaline (MCT)-induced pulmonary hypertension in rats by especially focusing on the pulmonary vascular morphology changes. Methods : Sprague-Dawley rats were treated as follows: controls received a subcutaneous saline injection, MCT-treated rats received a subcutaneous MCT injection, and bosentan-treated rats received a MCT...
Serum level of the adiponectin and adiponectin I164T polymorphism in hypertensive adolescents
Jung Ah Lee, Joo Hyun Gil, Young Mi Hong
Clin Exp Pediatr. 2009;52(2):187-193.   Published online February 15, 2009
Purpose : Adiponectin is a molecule that plays an important role in the metabolic syndrome. In addition, its concentration is known to be decreased in obesity, type 2 diabetes, and coronary artery disease. Although a relationship between hypertension and serum adiponectin concentrations has been reported by several authors, such findings continue to be debated. We investigated whether hypoadiponectinemia is related...
Angiotensinogen gene M235T polymorphism as a predictor of cardiovascular risk in hypertensive adolescents
Joo Hyun Gil, Jung Ah Lee, Eun Young Park, Young Mi Hong
Clin Exp Pediatr. 2009;52(1):36-43.   Published online January 15, 2009
Purpose : The renin-angiotensin system (RAS) has been demonstrated to play a major role in regulating blood pressure. Therefore, components of the RAS are likely candidate genes that may predispose an individual to essential hypertension and cardiovascular complications. Among them, the M235T polymorphism of the angiotensinogen gene has been speculated to be associated with elevated circulating angiotensinogen concentrations and essential...
Normal blood pressure values and percentile curves measured by oscillometric method in children under 6 years of age
Jin A Sohn, Hee Sook Lee, Kyoung Aha Lim, So Young Yoon, Jo Won Jung, Nam Su Kim, Chung Il Noh, Soon Young Lee, Young Mi Hong
Clin Exp Pediatr. 2008;51(9):998-1006.   Published online September 15, 2008
Purpose : Hypertension is defined as average systolic blood pressure and/or diastolic blood pressure that is ≥95th percentile for gender, age, and height on ≥three occasions. Knowing that blood pressure values increase in children as they grow older, the purposes of this study were to measure blood pressure by an oscillometric device and to determine normal values and percentile curves...
Leptin, adiponectin, interleukin-6 and tumor necrosis factor- in obese adolescents
Joo Hyun Gil, Jung Ah Lee, Ji Young Kim, Young Mi Hong
Clin Exp Pediatr. 2008;51(6):597-603.   Published online June 15, 2008
Purpose : Obesity is associated with insulin resistance. Insulin resistance and the presence of pro-inflammatory mediators are thought to cause a state of vascular endothelial dysfunction, an abnormal lipid profile, hypertension, and vascular inflammation. These chronic inflammatory responses, which are characterized by abnormal cytokine production, lead to activation of a pro-inflammatory signaling pathway. Leptin is an important mediator of inflammatory...
Pulse wave velocity and ankle brachial index in obese adolescents
Ji Hye Kim, Hee Sun Koo, Young Mi Hong
Clin Exp Pediatr. 2007;50(11):1078-1084.   Published online November 15, 2007
Purpose : The prevalence of childhood obesity has doubled over the last 30 years. Obesity-associated sequelae in the vasculature begins in the early stages of life. The purpose of this study was to investigate how pulse wave velocity (PWV) and ankle brachial index (ABI) change with height, weight and body mass index (BMI) in obese adolescents. Methods : Seventy-nine obese...
Pulse wave velocity and ankle brachial index in normal adolescents
Ji Hye Kim, Tae Young Gil, Hee Woo Lee, Young Mi Hong
Clin Exp Pediatr. 2007;50(6):549-555.   Published online June 15, 2007
Purpose : Pulse wave velocity (PWV) and ankle brachial index (ABI) are simple, non-invasive methods to assess arterial stiffness. These parameters are also known to be closely related to cardiovascular risk factors and diseases. The purposes of this study were to measure blood pressure, PWV, ABI in healthy Korean adolescents, set up their normal values and assess their correlations. Methods...
Modified Tei index in patients with Kawasaki disease by tissue doppler imaging
Hee Jung Kim, Jung Hwa Cha, Young Mi Hong
Clin Exp Pediatr. 2006;49(11):1202-1210.   Published online November 15, 2006
Purpose : A quantitative and easily measured Doppler index of combined systolic and diastolic ventricular myocardial performance (Tei index) was recently proposed as a potentially useful predictor of global myocardial performance. However, presence of heart rate fluctuation makes it unreliable. Therefore, the modified Tei index was introduced by using tissue Doppler imaging (TDI) which enables measuring contraction and relaxation velocities...
Serum homocysteine and tumor necrosis factor-alpha levels after intravenous gammaglobulin treatment in patients with Kawasaki disease
Jung Hwa Cha, Young Mi Hong
Clin Exp Pediatr. 2006;49(10):1093-1099.   Published online October 15, 2006
Purpose : Homocysteine is a strong and independent risk factor for cardiovascular disease. The deleterious effects of homocysteine included endothelial dysfunction, arterial intimal-medial thickening, wall stiffness and procoagulant activity. However, the precise mechanism responsible for homocysteine release in children with coronary artery disease is still unknown. The purpose of this study was to investigate serum homocysteine and tumor necrosis factor(TNF)-α...
Pulse wave velocity and ankle brachial index in adolescents with essential hypertension
Sun Young Joo, Ki Young Cho, Su Jin Cho, Young Mi Hong
Clin Exp Pediatr. 2006;49(7):769-776.   Published online July 15, 2006
Purpose : Pulse wave velocity(PWV) and ankle brachial index(ABI) are not only noninvasive methods used to assess arterial stiffness in adults, but also useful, simple ways to estimate the severity of hypertension, end stage renal disease and atherosclerosis in adults. But there are few studies on PWV and ABI in adolescents and children. In this study, hypertensive adolescents were compared...