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Original Article
Neonatology (Perinatology)
Individualized ibuprofen treatment using serial B-type natriuretic peptide measurement for symptomatic patent ductus arteriosus in very preterm infants
Jeonghee Shin, Eun Hee Lee, Jee Hyun Lee, Byung Min Choi, Young Sook Hong
Clin Exp Pediatr. 2017;60(6):175-180.   Published online June 22, 2017
Purpose

Plasma level of B-type natriuretic peptide (BNP), an emerging, sensitive, and specific biomarker of hemodynamically significant patent ductus arteriosus (PDA), rapidly decreases in infants receiving cyclooxygenase inhibitors for ductal closure. We investigated the usefulness of serial BNP measurement as a guide for individual identification of early constrictive responses to ibuprofen in preterm infants with symptomatic PDA (sPDA).

Methods

Before March 2010, the...

The influencing factors on procalcitonin values in newborns with noninfectious conditions during the first week of life
Jueseong Lee, Yong Hyeon Bang, Eun Hee Lee, Byung Min Choi, Young Sook Hong
Clin Exp Pediatr. 2017;60(1):10-16.   Published online January 16, 2017
Purpose

Although procalcitonin (PCT) level is useful for the diagnosis of neonatal sepsis, PCT reliability is inconsistent because of the varied conditions encountered in neonatal intensive care units. This study aimed to investigate PCT levels and factors influencing increased PCT levelin newborns without bacterial infection during the first week of life.

Methods

In newborns hospitalized between March 2013 and October 2015, PCT levels...

Nephrology (Genitourinary)
Impaired angiogenesis in the enalapril-treated neonatal rat kidney
Hyung Eun Yim, Kee Hwan Yoo, Eun Soo Bae, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2016;59(1):8-15.   Published online January 22, 2016
Purpose

Nephrogenesis is normally accompanied by a tightly regulated and efficient vascularization. We investigated the effect of angiotensin II inhibition on angiogenesis in the developing rat kidney.

Methods

Newborn rat pups were treated with enalapril (30 mg/kg/day) or vehicle (control) for 7 days after birth. Renal histological changes were checked using Hematoxylin & Eosin staining. We also investigated the intrarenal expression of vascular...

Effect of angiotensin II inhibition on the epithelial to mesenchymal transition in developing rat kidney
Hyung Eun Yim, Kee Hwan Yoo, In Sun Bae, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2009;52(8):944-952.   Published online August 15, 2009

Purpose:To investigate the effects of angiotensin II inhibition on the epithelial to mesenchymal transition (EMT) in the developing kidney, we tested the expression of EMT markers and nestin in angiotensin converting enzyme (ACE) inhibitor-treated kidneys. Methods:Newborn rat pups were treated with enalapril (30 mg/kg/d) or a vehicle for 7 days. Immunohistochemistry for the expression of α-smooth muscle actin (SMA), E-cadherin, vimentin, and nestin were...
Functional recovery after transplantation of mouse bone marrow-derived mesenchymal stem cells for hypoxic-ischemic brain injury in immature rats
Wooksun Choi, Hye Kyung Shin, So-Hee Eun, Hoon Chul Kang, Sung Won Park, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Baik-Lin Eun
Clin Exp Pediatr. 2009;52(7):824-831.   Published online July 15, 2009
Purpose : We aimed to investigate the efficacy of and functional recovery after intracerebral transplantation of different doses of mouse mesenchymal stem cells (mMSCs) in immature rat brain with hypoxic-ischemic encephalopathy (HIE). Methods : Postnatal 7-days-old Sprague-Dawley rats, which had undergone unilateral HI operation, were given stereotaxic intracerebral injections of either vehicle or mMSCs and then tested for locomotory activity in...
Case Report
Two cases of Smith-Magenis syndrome
Seong Kwan Jung, Kyu Hee Park, Hae Kyung Shin, So Hee Eun, Baik-Lin Eun, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Sook Young Bae
Clin Exp Pediatr. 2009;52(6):701-704.   Published online June 15, 2009
SmithMagenis syndrome (SMS) is a rare disorder with multiple congenital anomalies caused by a heterozygous interstitial deletion involving chromosome 17p11.2, where the retinoic acid-induced 1 (RAI1) gene is located, or by a mutation of RAI1. Approximately 90% of the patients with SMS have a detectable 17p11.2 microdeletion on fluorescence in-situ hybridization (FISH). SMS is characterized by mental retardation, distinctive behavioral...
Original Article
Evaluating and managing hypertension in children: a survey of Korean cardiologists and nephrologists
Eun Hee Lee, Hyung Eun Yim, Gi Young Jang, Kee Hwan Yoo, Chang Sung Son, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2008;51(9):992-997.   Published online September 15, 2008
Purpose : Hypertension (HTN) is no longer an exclusively adult disease; the prevalence of pediatric HTN is increasing. To understand the evaluation and treatment of childhood HTN in Korea, we investigated, via a questionnaire, how hypertensive children are currently assessed and managed by pediatric cardiologists (CA) and nephrologists (NE). Methods : We surveyed 82 pediatric CA and 77 NE, regarding...
Use of herbal medicine in epileptic children
Jee Yeon Lee, Wook Sun Choi, So-Hee Eun, Baik-Lin Eun, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2008;51(4):415-419.   Published online April 15, 2008
Purpose : Herbal medicine is thought to be widely used by children with epilepsy, but there have been few studies. This study aimed to investigate the perceptions and the actual conditions of usage of herbal medicine by children with epilepsy. Methods : From July to August 2007, three hundred seventy eight questionnaires were completed by parents of epileptic children who visited...
Efficacy and safety of oxcarbazepine in epileptic children
Hye Kyung Shin, Yoon Lee, Jee-Yeon Lee, Wooksun Choi, So-Hee Eun, Baik-Lin Eun, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2008;51(2):162-169.   Published online February 15, 2008
Purpose : Oxcabarzepine (OXC), newly recommended antiepileptic drug, has been prescribed for patients with partial seizures and generalized tonic clonic seizures in Korea from 1999. There are limited reports about an efficacy of OXC therapy in epileptic children in Korea. This study evaluated the efficacy and safety of OXC in the light of our experience. Methods : The patients, who had...
The effects of ibuprofen and indomethacin therapy for patent ductus arteriosus in preterm infants
Wooksun Choi, Jung-Yeon Shin, Byung Min Choi, Baik-Lin Eun, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2006;49(12):1315-1323.   Published online December 15, 2006
Purpose : This study was conducted to compare the efficacy and safety of ibuprofen and indomethacin in the treatment of patent ductus arteriosus (PDA) in preterm infants and to determine whether ibuprofen can be an alternative drug. Methods : A total of 32 preterm infants with symptomatic PDA were enrolled in the study. Twelve infants received intravenous ibuprofen 10 mg/kg, followed...
The auditory evoked potential in premature small for gestational age infants
Il Hong Moon, Kee Soo Ha, Gui Sang Kim, Byung Min Choi, Baik-Lin Eun, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2006;49(12):1308-1314.   Published online December 15, 2006
Purpose : This study aimed to evaluate the usefulness of auditory evoked potential (AEP) in clarifying neuronal development in premature small for gestational age (SGA), and appropriate for gestational age (AGA) infants. Methods : A total of 183 premature infants who were born from August 2002 to July 2005, were examined with AEP. They were divided into three groups; AGA, symmetric-SGA...
Usefulness of modified ambu in patients who need artificial ventilation
Kee Soo Ha, Il Hong Moon, Hee Sun Lee, Dong Han Shin, So Hee Eun, Baik-Lin Eun, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2006;49(11):1194-1201.   Published online November 15, 2006
Purpose : The comatose mentality can be catastrophic, especially if the condition is severe or the duration is prolonged. Therefore, delayed diagnosis can result in a poor outcome or death. The best radiologic modality to differentiate from cerebral lesions in patients suffering from cerebral diseases is magnetic resonance imaging (MRI) rather than computed tomography (CT). Special apparatuses with metal...
Case Report
Perforation of azygos vein and right-sided hydrothorax caused by peripherally inserted central catheter in extremely low birth weight infant
Kee Soo Ha, Jung Yeon Shin, Mi Jung Hwang, Young Ok Choi, Dong Han Shin, Gi Young Jang, Byung Min Choi, Kee Hwan Yoo, Young Sook Hong, Chang Sung Son
Clin Exp Pediatr. 2006;49(8):902-905.   Published online August 15, 2006
We report a case in which routine chest roentgenograms of an 840 g infant led to the belief that the peripherally inserted central catheter (PICC) was appropriately positioned within the superior vena cava when, in actuality, it was within the azygous arch. Although many cases of pleural effusions have been reported to be caused by a central venous catheter, a...
Primary peritoneal drainage as a treatment for perforated necrotizing enterocolitis with bacterial peritonitis in an extremely low birth weight infant : a case report
Wook Sun Choi, Il Hong Moon, Jang Hoon Lee, Seung Hwa Lee, Byung Min Choi, Baik-Lin Eun, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2006;49(7):800-804.   Published online July 15, 2006
Necrotizing enterocolitis(NEC) is the most common life-threatening surgical emergency in neonates, and remains a major cause of morbidity and mortality. In addition to conventional laparotomy, intraperitoneal drains have been used for the treatment of perforated NEC, especially in extremely low birth weight(ELBW) infants. We report a case of perforated NEC with bacterial peritonitis in an ELBW infant managed with primary...
Original Article
Usefulness of Korean Infant Developmental Screening Test in Premature Infants
Dong Han Shin, Hee Sun Lee, Jee Yeon Lee, Byung Min Choi, Baik-Lin Eun, Young Sook Hong, Joo Won Lee
Clin Exp Pediatr. 2005;48(12):1337-1341.   Published online December 15, 2005
Purpose : This study aimed to evaluate the usefulness of Korean Infant Development Screening Test in predicting delayed development in premature infants. Methods : A total of 74 children with histories of prematurity, who visited the pediatric neurology clinic of Korean University Ansan Hospital from August, 2002 to July, 2004, were examined, using the Korean Infant Development Screening Test. They were...
Case Report
A Case of Partial Hypoxanthine-Guanine Phosphoribosyltransferase Deficiency Presenting as Uric Acid Lithiasis
Ji Hae Kim, Mi Jung Kim, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2004;47(9):1020-1023.   Published online September 15, 2004
The deficiency of enzyme hypoxanthine-guanine phosphoribosyltransferase(HPRT) results in hyperuricemia and subsequently manifests in diverse symptoms. Lesch-Nyhan syndrome is a disorder characterized by hyperuricemia, mental retardation, choreoathetosis, spasticity and self-mutilation, resulting from complete deficiency of the enzyme, whereas partial deficiency of the enzyme shows symptoms of milder forms more often without abnormal neurologic signs. A 7-year-old boy with normal growth and...
Original Article
Phenotypic Transformation of Tubular Epithelial Cells and Fibroblasts Following Unilateral Ureteral Obstruction or Angiotensin II Infusion in the S-D Rat
Eui Seong Lee, Min Jee Jeoung, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2004;47(4):430-438.   Published online April 15, 2004
Purpose : Unilateral ureteral obstruction(UUO), a well established experimental model of renal injury, gives rise to tubulointerstitial fibrosis, tubular dilatation and cellular atrophy. Angiotensin(ANG) II may take the prime role in the regulation of this response. The objectives in the current investigation were to determine whether the renal response to UUO involves the dedifferentiation of tubular epithelial cells to mesenchymal...
A Multivariate Analysis of Risk Factors of Renal Involvement in Henoch-Sch nlein Purpura
Min Jee Jeoung, Hyung Eun Yim, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2004;47(4):405-411.   Published online April 15, 2004
Purpose : Long-term prognosis of Henoch-Sch nlein purpura(HSP) is determined by the existence and severity of renal involvement. We evaluated the relationship between various clinical features of HSP and the development of renal involvement using univariate and multivariate analyses for early detection and proper management of HSP nephritis. Methods : We performed a retrospective study of 200 children who were diagnosed...
Case Report
A Case of Intestinal Lymphangiectasia
Hyung Eun Yim, Min Ji Jung, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2003;46(9):921-925.   Published online September 15, 2003
Intestinal lymphangiectasia, one of the protein-losing gastroenteropathies, is an uncommon disease characterized by dilated intestinal lymphatics, enteric protein loss, edema, hypoalbuminemia, and lympocytopenia. Small bowel biopsy and CT have been used to confirm the diagnosis of intestinal lymphangiectasia. Small bowel biopsy shows collections of abnormal dilated lacteals in submucosa with distortion of villi and CT findings have been described as...
Original Article
Risk Factors for the First-Year Relapse in Children with Nephrotic Syndrome
Hye Kyoung Shin, Ji Hee Kim, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2003;46(9):889-892.   Published online September 15, 2003
Purpose : This study aimed to evaluate risk factors of the first year relapse in children with nephrotic syndrome(NS) without the need for biopsy. Methods : We reviewed, retrospectively, 78 children diagnosed with steroid responsive nephrotic syndrome between July 1997 and June 2002. Median years to follow up were 4.4 years(range : 1-5 years). We divided the patients into two groups(group...
Effects of Endothelin A Receptor Antagonist to Cellular Proliferation and Apoptosis in Neonatal Rat Heart
Byung Min Choi, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2003;46(7):668-678.   Published online July 15, 2003
Purpose : In order to investigate the role of endothelins in the cardiac development, the present study was designed to examine the effects of endothelin A receptor(ETAR) antagonist to the cellular proliferation and apoptosis in the neonatal rat heart. In addition, the expression of various regulatory genes in protein and mRNA levels by ETAR antagonist were examined. Methods : Neonatal...
Recurrence and Follow-up after Urinary Tract Infection
Ji Hee Kim, Hye Kyung Shin, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2003;46(6):561-565.   Published online June 15, 2003
Purpose : Urinary tract infection(UTI) is the most common bacterial infectious disease that may induce severe renal injury unless early diagnosis and appropriate treatment are performed. If recurrent UTI is prevented, renal injury can be also reduced. Therefore, we studied the risk factors of recurrent UTI in children. Methods : We performed a retrospective study of 168 children(58 girls and 110...
The Role of Aldosterone on the Development of Renal Tubular Reabsorption in Low Birth Weight Infants
Byung Min Choi, Hoe Kyoung Koo, Jin Won Yook, Kyoung Bum Kim, Gi Young Jang, Moon Hee Kim, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2001;44(11):1233-1242.   Published online November 15, 2001
Purpose : To determine the postnatal changes in aldosterone action on the renal tubular reabsorption in low birth weight(LBW) infants, we assessed the relation of the aldosterone concentrations to renal parameters during the first 10 days of life. Methods : Twenty LBW infants were evaluated and their gestational ages ranged from 32.4 to 39.3 weeks and their birth weights ranged from...
Evoked Potentials and Cranial Ultrasonography as a Prognostic Method in Newborn with Asphyxia
Hyung Jin Kim, Hee Kang, Byoung Min Choi, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2001;44(10):1162-1167.   Published online October 15, 2001
Purpose : This study was aimed at finding a diagnostic tool which is useful in predicting the neurologic outcome of the asphyxiated newborns. Methods : 31 newborns with asphyxia were evaluated by brainstem evoked potentials and cranial ultrasonography(CUS). During the neonatal follow-up, we evaluated the development of the babies with Bayley Scale of Infant Development II and INFANIB on corrected age...
Case Report
A Case of Graves Disease with Kyphosis by Osteoporosis
Yo Won Na, Kee Hyoung Lee, Kee Hwan Yoo, Young Sook Hong, Ju Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2001;44(8):971-975.   Published online August 15, 2001
Graves disease is the most common clinical feature of hyperthyroidism in childhood. Clinical manifestations include emotional lability, hyperactivity, tremor, excessive sweating, exophthalmos and weight loss. In Graves disease, osteoporosis could occur because of a disturbance of mineral homeostasis which rarely develops from reduced calcium absorption of the gastrointestinal tract and increased urinary calcium excretion related to an increased bone resorption....
Original Article
Assessment of Endogenous Nitric Oxide Formation in the Neonate : Measurement of Urinary Nitrite and Citrulline Concentrations
Young Ho Kim, Ki Hwan Yu, Young Sook Hong, Sun Kyum Kim
Clin Exp Pediatr. 2001;44(1):40-45.   Published online January 15, 2001
Purpose : At birth, as the fetus adjusts to the “new world”, the fetal pulmonary circulation undergoes a striking transition, characterized by an immediate rise in pulmonary blood flow and a sustained decrease in pulmonary vascular resistance(PVR). In the factors which reduce PVR after birth, are ventilation of the lung by gas, increase of oxygen tension in pulmonary vascular system,...
Usefulness of Plasma Atrial Natriuretic Peptide Concentration in the Diagnosis of Patent Ductus Arteriosus in Preterm Infants
Byung Min Choi, Jae Kyun Yoon, Hyun Hee Lee, Hae Won Cheon, Kee Hwan Yoo, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2000;43(7):897-904.   Published online July 15, 2000
Purpose : Diagnosis of a hemodynamically significant patent ductus arteriosus(PDA) that should be treated is difficult to determine by clinical and echocardiographic examinations. The aim of this study was to clarify the interrelationship of plasma atrial natriuretic peptide(ANP) concentrations and clinical signs or echocardiographic signs of PDA in preterm infants and use plasma ANP concentrations as a diagnostic indicator of a hemodynamically significant PDA. Methods...
Case Report
A Case of Factor Ⅶ Deficiency Presenting as Hemarthroses
Han Seong Ko, Kee Hwan Yoo, Kwang Chul Lee, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 2000;43(3):428-431.   Published online March 15, 2000
Factor Ⅶ deficiency has an estimated incidence of 1/500,000 in the general population and autosomal recessive pattern of inheritance. Factor Ⅶ deficiency is characterized by prolonged prothrombin time(PT), and normal activated partial thromboplastin time(aPTT) and bleeding time(BT). Definite diagnosis of this condition requires a specific Factor Ⅶ assay. The clinical features are variable and do not always correlate with the...
Original Article
Effects of Angiotensin Converting Enzyme Inhibition into Apoptosis and Related Genes in the Neonatal Rat Kidney
Kee Hwan Yoo, Haewon Cheon, Byung Min Choi, Young Sook Hong, Joo Won Lee, Soon Kyum Kim
Clin Exp Pediatr. 1999;42(8):1086-1095.   Published online August 15, 1999
Purpose : The renin-angiotensin system plays an important role in renal growth and development. Exposuring the neonate to angiotensin converting enzyme(ACE) inhibitor increases mortality and results in growth retardation and abnormal renal development. ACE inhibition in the developing kidney reduces the renal expression of TGF-β1 and EGF, which may account for renal growth impairment. This study was designed to...
Case Report
A Case of 18q-Deletion Syndrome with Hydronephrosis and Anhydrosis
Mun Hee Kim, Kee Hwan Yoo, Young Sook Hong, Soon Kyum Kim
Clin Exp Pediatr. 1999;45(5):711-715.   Published online May 15, 1999
The 18q-syndrome is a deletion disorder that occurs in humans. Clinical symptoms are mental retardation, craniofacial anomalies, skeletal deformity, seizure, and hearing loss. 18q- deletion occurs over a broad region, spanning the interval from 18q22.2 to 18qter rather than a single critical region containing 18q. We experienced a case of 18q-syndrome in a male child. It was diagnosed by clinical...
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