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Review Article
Gastroenterology
Changing prevalence of Helicobacter pylori infection in children and adolescents
Ji Sook Park, Jin Su Jun, Ji-Hyun Seo, Hee-Shang Youn, Kwang-Ho Rhee
Clin Exp Pediatr. 2021;64(1):21-25.   Published online July 15, 2020
Although Helicobacter pylori infection rate in children is unclear due to diversity and limitation of diagnostic tests unlike in adults, investigation the childhood prevalence is important for predicting H. pylori-related diseases in the future.
H. pylori infection occurred in early childhood, and declined during 30 years in our study.
Change in risk factors of H. pylori transmission and consensus for eradication therapy in children might further reduce the infection rate.
Antibiotics resistance of Helicobacter pylori and treatment modalities in children with H. pylori infection
Ji-Hyun Seo, Hyang-Ok Woo, Hee-Shang Youn, Kwang-Ho Rhee
Clin Exp Pediatr. 2014;57(2):67-71.   Published online February 24, 2014

Pediatric infection with Helicobacter pylori may occur early in childhood and persist lifelong. Global pediatric clinical studies have reported a decreasing tendency in the overall rate of H. pylori eradication. In pediatric patients with H. pylori infection, pediatric patients with peptic ulcer, and the first-degree relatives of patients with a history of gastric cancer, it is commonly recommended that H....

Original Article
Relationship between Helicobacter pylori infection and iron-deficiency anemia in infants and children
Meong Hi Son, Jung Suk Yeom, Ji Suk Park, Eun Sil Park, Ji Hyun Seo, Jae Young Lim, Chan Hoo Park, Hyang Ok Woo, Hee Shang Youn
Clin Exp Pediatr. 2009;52(5):544-548.   Published online May 15, 2009
Purpose : To elucidate a potential association between Helicobacter pylori (HP) infection and iron-deficiency anemia (IDA) in infants and children in terms of the other factors related to iron utilization and storage although the association of ferritin was previously studied. Methods : We evaluated 135 infants (aged 6-24 months) admitted at Gyeongsang National University Hospital from 2000 to 2006. Western blot...
Gastric mucosal immune response of Helicobacter pylori-infected children
Hye Won Yom, Jeong Wan Seo
Clin Exp Pediatr. 2008;51(5):492-499.   Published online May 15, 2008
Purpose : Helicobacter pylori infection is one of the most common gastrointestinal infections worldwide; it almost invariably causes chronic gastritis. Pediatric studies may provide important insights into the mucosal immune response of H. pylori-infection, as children are not submitted to environmental factors such as alcohol, tobacco and anti-inflammatory medication. The aim of the present study was to investigate the mucosal...
Case Report
A Case of Resolution of Duodenal Obstruction Caused by Duodenal Ulcer after the Eradication of Helicobacter pylori Infection
Sung Ryoung Han, Wan Suk Choi, Ju Suk Lee
Clin Exp Pediatr. 2004;47(6):691-695.   Published online June 15, 2004
Duodenal ulcers are often complicated by obstruction, bleeding, or perforation. The eradication of Helicobacter pylori reduce ulcer recurrences and complications in patients with duodenal ulcer. However, there is controversy whether the eradication of H. pylori infection can resolve duodenal stenosis complicated by duodenal ulcers. After the eradication of H. pylori infection, duodenal stenosis complicated by duodenal ulcer was resolved in...
Original Article
Therapeutic Effect of Helicobacter pylori Eradication in Children with Recurrent Abdominal Pain Associated with H. pylori
Ji Hyun Uhm, Ki Sup Chung
Clin Exp Pediatr. 2004;47(5):547-554.   Published online May 15, 2004
Purpose : In order to clarify the role of Helicobacter pylori(H. pylori) in recurrent abdominal pain, we investigated prospectively the effect of eradication of H. pylori based on symptom improvement in children with recurrent abdominal pain. Methods : Children with recurrent abdominal pain were evaluated with diagnostic upper gastrointestinal endoscopy to rule out peptic ulcer disease, etc. During endoscopy, biopsies were...
Clinical Lecture
Helicobacter pylori Infection in Children : Recommendations for Diagnosis and Treatment
Yon Ho Choe
Clin Exp Pediatr. 2004;47(3):235-239.   Published online March 15, 2004
Helicobacter pylori(H. pylori) infection is mainly acquired in childhood. The prevalence of infection is still highest in children in the developing world. There has been a need for clinical guidelines for H. pylori infection in children. Therefore, the North American Society for Pediatric Gastroenterology and Nutrition and the European Paediatric Task Force on H. pylori achieved consensus and developed clinical...
Original Article
Detection of Helicobacter pylori by Pre-embedding Immunoelectron Microscopy -Comparison with Immunoblotting Method
Hae-Seoung Jung, Eun-Jung Kim, Eun-A Kim, Ji-Hoe Park, Jin-Su Jun, Ji-Hyoun Seo, Jae-Young Lim, Myoung-Bum Choi, Hyang-Ok Woo, Hee-Shang Youn, Gyung-Hyuck Ko, Seung-Chul Baik, Woo-Kon Lee, Myung-Je Cho, and Kwang-Ho Rhee
Clin Exp Pediatr. 2002;45(7):862-874.   Published online July 15, 2002
Purpose : We tried to evaluate whether the detection rate of Helicobacter pylori in gastric biopsy specimens could be improved by using pre-embedding immunoelectron microscopy. Methods : A total of 119 children who complained of upper gastrointestinal symptoms were endoscoped at the Gyeongsang National University Hospital from July, 1996 to July, 1999. Five biopsy specimens(three for urease test, one for...
The Diagnostic Usefulness of Endoscopic Findings and Detection Rates of CLO and HpKit Test for Helicobacter pylori Infection in Children
Seung Yeon Lee, Ji Hyung Yoo, Ki Sup Chung
Clin Exp Pediatr. 2002;45(4):482-488.   Published online April 15, 2002
Purpose : We performed this study to evaluate the diagnostic usefulness of endoscopic finding of nodular gastritis, CLO and HpKit test for H. pylori infection in children. Methods : Gastroduodenal endoscopy and mucosal biopsy were performed on 212 children who visited our hospital between Jul. 1999 and May 2000 due to abdominal pain. We performed CLO and HpKit test for H....
Red Blood Cell Indices, Serum Iron and Total Iron Binding Capacity in Children with Helicobacter pylori Infection
Soo Joon Park, Chang Han Lee, Ki Sup Chung
Clin Exp Pediatr. 2000;43(6):755-762.   Published online June 15, 2000
Purpose : H. pylori infection was recently reported to be associated with unexplained iron-deficiency anemia(IDA) in children and adolescents. H. pylori-related IDA was thought to occur due to GI blood loss, scavenging of iron by H. pylori and iron malabsorption. The aim of this study was to examine how the status of H. pylori infection and age of children affected...
Gastrointestinal Disease in Children with Iron Deficiency Anemia
Yong Joo Kim, Sung Kyun Park, Ho Joon Lim, Hahang Lee
Clin Exp Pediatr. 1999;42(5):697-703.   Published online May 15, 1999
Purpose : The authors performed this study to find out the associated GI disease and H. pylori infection in children with iron-deficiency anemia(IDA). Methods : Twenty-six children older than 2 years with IDA and no history of insufficient iron intake were investigated from 1994 to 1998. Gastrofiberoscopic examination and biopsy and rapid urease test were performed with serum H. pylori IgG....
Positivity of cagA and vacA Genes of Helicobacter pylori by PCR Assay of Gastric Biopsy Specimens and Gastric Inflammation in Children
Jeong Wan Seo, Mi Ae Lee, Woon Sup Ha
Clin Exp Pediatr. 1999;42(4):491-500.   Published online April 15, 1999
Purpose : The aim of the present study is to detect cagA and vacA genes of Helicobacter pylori(H. pylori) strain in gastric biopsy specimens and to evaluate its association with gastric inflammation in children. Methods : The cagA and vacA genes were detected by a direct polymerase chain reaction(PCR) assay of gastric biopsy specimens in 22 patients who were...
Clinical Features and Endoscopic Findings of Helicobacter pylori Infection in Children
Seon Hee Kim, Cheol Ho Chang, Churl Young Chung
Clin Exp Pediatr. 1998;41(10):1359-1364.   Published online October 15, 1998
Purpose : Helicobacter pylori(H. pylori) is recognized as the cause of primary or unexplained gastrointestinal diseases in children as well as in adults. However, it is unclear whether H. pylori causes specific clinical symptoms or diseases. Therefore, we studied the clinical manifestations associated with H. pylori infection in consecutive symptomatic children undergoing diagnostic endoscopy. Methods : This study included 42...
A PCR Assay of Gastric Biopsy Specimens for the Diagnosis of Helicobacter pylori Infection in Children
Jeong Wan Seo, Mi Ae Lee, Woon Sup Han
Clin Exp Pediatr. 1998;41(8):1084-1091.   Published online August 15, 1998
Therapeutic Efficacy of Dual Therapy and Triple Therapy for Helicobacter pylori Infection in Children
Sun-Hwan Bae, Jae-Sung Koh, Jeong-Kee Seo
Clin Exp Pediatr. 1998;41(3):323-330.   Published online March 15, 1998
Purpose : An optimal treatment for Helicobacter pylori (H. pylori ) infection in children has not yet been established. In this study, the efficacy and the tolerability of triple therapy with colloidal bismuth subcitrate(CBS), amoxicillin and metronidazole, were evaluated in comparison with dual therapy with CBS and amoxicllin. Methods : Eighty-six children with H. pylori infection, aged 6 years to 14...
Case Report
Four Cases of Iron Deficiency Anemia with Helicobacter pylori Infection
Houng Soung, Cheol Ho Chang, Churl Young Chung
Clin Exp Pediatr. 1996;39(8):1173-1178.   Published online August 15, 1996
Helicobacter pylori has become apparent that this organism is an etiologic agent of gastrits and peptic ulcer disease in humans. We present four cases of iron deficiency anemia, not specific causes, in 3 males and 1 female patients with Helicobacter pylori infection, who were treated with antibiotics and iron supplemented therapy. Diagnosis was confirmed by endoscopic biopsies and hematologic findings. A brief review of related...
Original Article
Histologic Study of Helicobacter pylori-Associated Gastritis in Children
Jeong Wan Seo, Woon Sup Han
Clin Exp Pediatr. 1996;39(6):811-821.   Published online June 15, 1996
Purpose : The aim of the present study was to assess the clinical, endoscopic and histologic findings of the Helicobacter pylori(Hp)-associated gastritis in children. Methods : We have assessed 91 patient(age range 3-15 years) referred for upper intestinal endoscopy during 17 months. At least two antral biopsies were taken during endoscopy. The histological analysis and CLO test were done. The histologic changes were scored and...
Helicobacter pylori Infection and Various Upper Gastrointestinal Diseases in Children with Abdominal Complaint
Hyun Young Kim, Ki Sup Chung
Clin Exp Pediatr. 1996;39(3):361-369.   Published online March 15, 1996
Purpose : The purpose of this study was to research the incidence of H. pylori infection in children with upper gastrointestinal complaints according to age, sex, and diseases diagnosed by endoscopy. This study was also aimed at evaluating the usefullness of diagnostic methods, and to assess the effectiveness of treatment. Methods : Upper gastrointestinal endoscopy and gastric mucosal biopsy were performed...
A Clinical Evaluation of the Gastrofiberscopy Studies in Children
Jung Ah Park, Young Ho Ahn, Jin Bok Hwang, Chang Ho Han, Hai Lee Chung, Young Dae Kwon, Jae Bok Park
Clin Exp Pediatr. 1995;38(11):1498-1505.   Published online November 15, 1995
Purpose : This study aimed to provide, as basic material, the experience of gastrofiberscopy in children and the clinical significance of Helicobacter pylori(H. pylori) infection in pediatric gastrointestinal disease. Methods : The objects were 99 patients(male 49, female 50) who underwent gastrofiberscopic examination in case of endoscopic indication at department of pediatrics of Taegu Hyosung Catholic University Hospital from March 1993...
Clinical and Histologic Findings and their Correlations in Children with Nodular Gastritis
Ki Moon Cha, Gi Euin Won, Hann Tchah, Ho Jin Park, Mi Kyoung Shin
Clin Exp Pediatr. 1995;38(8):1069-1076.   Published online August 15, 1995
Purpose : Recently, a wide application of gastrofiberscopy in the pediatric group have revealed that nodular gastritis is an unique disease in children and associated with Helicobacter pylori. The aim of this prospective study was to investigate the clinical and histologic features in children with nodular gastritis, and to assess corelation between both. Methods : During a period of 44 months(May 1991-December...
Recurrent Abdominal Pain in Children: Endoscopic Findings and Helicobacter pylori Infection
Cheol Ho Chang, Churl Young Chung
Clin Exp Pediatr. 1995;38(1):47-53.   Published online January 15, 1995
Purpose : Recurrent abdominal pain (RAP) in children is similar to nonulcer dyspepsia of adult. Recently, microscopic inflammation and Helicobacter pylori (H. pylori) infection have been suggested as possible causes of nonulcer dyspepsia in adults. The aim was to know the clinical significance of encoscopic findings and H. pylori infection in children with RAP. Methods : 128 children with RAP underwent...
Gastrofiberscopic Findings in Children Complaining of Upper Gatrointestinal Symptoms
Jeong Wan Seo
Clin Exp Pediatr. 1993;36(5):649-655.   Published online May 15, 1993
A gastrofiberscopic evaluation was performed on 65 children complaining of upper gastrointestinal symptoms who visited the pediatric department of Hanil hospital from March 1991 to September 1992. Gastrofiberscopy was done without local anesthesia of pharynx and heavy sedation. To identify H. pylori infection, biopsy specimen was taken from the gastric antrum since Feb. 1992. The specimens were examined using the rapid...
Gastrofiberscopic Findings and Helicobacter pylori Gastritis in Children with Recurrent Abdominal Pain
Jeong Kee Seo, Je Geun Chi, Eui Chong Kim
Clin Exp Pediatr. 1992;35(12):1646-1656.   Published online December 15, 1992
Gastrofiberscopic findings and the presence of Helicobacter pylori (H. pylori) were studied prospectively in children with recurrent abdominal pain (RAP). Endoscopic findings in 707 children with RAP revealed that 243 children (34.3%) showed abnormal findings including gastritis in 16.9%, duodenitis in 10.4%, esophagitis in 5.7%, duodenal ulcer in 5.7%, and gastric ulcer in 1.1% of children with RAP. Endoscopic biopsy of...