장주영 교수

Antibiotic-associated diarrhea due to Clostridium difficile (CDAD) is thought to reflect colonization of a disrupted microbial community by the pathogen. We profiled the fecal microbiota of patients with CDAD (both initial and recurrent episodes) by culture-independent phylogenetic analysis of 16S rRNA-encoding gene sequences. Compared with those from control subjects and patients with an initial episode, the fecal communities in patients with recurrent CDAD were highly variable in bacterial com

Wharton's jelly is not only one of the most promising tissue sources for mesenchymal stem cells (MSCs) but also a source of natural growth factors. To prove that we can get both natural growth factors and MSCs from Wharton's jelly, we compared cellular characteristics and the level of basic fibroblast growth factor (bFGF) from samples using the explant culture method to those derived from the traditional enzymatic culture method. The levels of bFGF were 27.0 ± 11.7 ng/g on day 3, 15.6 ± 11.1 ng/

National Research Foundation of Korea.

Neonatal-onset inflammatory bowel disease (IBD) accounts for only 0.25% of pediatric IBD cases. The molecular pathogenesis of IBD remains unclear. Recently, rare Mendelian mutations have been identified in children with very early-onset Crohn's disease and ulcerative colitis. In this study, we report compound heterozygous mutations in the interleukin-10 receptor A (IL-10RA) gene in children with severe neonatal-onset IBD. Patient 1 had chronic diarrhea within the first month of life and had peri

The diversity and dynamic nature of intestinal bacterial colonization in very-low-birth weight preterm infants were revealed using pyrosequencing technology. The results of the present pilot study may provide a basis to consider when investigating or interpreting the role of intestinal microbiota in certain preterm infant diseases such as necrotizing enterocolitis or systemic infection.

A high suspicion of EGE is warranted when children have nonspecific gastrointestinal symptoms and peripheral eosinophilia. Most patients improved with food restrictions or steroid treatment, although one-third of patients showed a relapse or steroid resistance.

The present study found that portacaval shunt operation increases the risk of development of hepatic adenoma in GSD patients, especially in GSD type I. The hepatic adenoma in GSD patients has a potential of malignant transformation, which should be keep in mind in follow-up process of the disease.

We aimed to investigate epidemiology and host- and pathogen-related factors associated with clinical severity of acute gastroenteritis (AGE) in children after rotavirus vaccination introduction. Factors assessed included age, co-infection with more than 2 viruses, and virus-toxigenic Clostridium difficile co-detection. Fecal samples and clinical information, including modified Vesikari scores, were collected from hospitalized children with AGE. The presence of enteric viruses and bacteria, inclu

Distinct features of COVID-19 were observed in children during the Delta and Omicron surges. Continuous scrutiny of the manifestations of variants of concern is needed for appropriate public health response and management.

Increase in age of infected, hospitalized children was accompanied by change in clinical severity during 2011-2014 after the introduction of vaccines in Seoul. Clinical severity was also associated with vaccination status and genotype. Long-term large scale studies are needed to document the significance of the increase in genotypes of uncommon and mixed combinations.

In Korean adolescents of both genders, the prevalence of elevated ALT levels was stable from 2001 to 2014. This study has revealed that sex, obesity, truncal obesity and household income level are associated with ALT elevation in adolescents.

Diencephalic syndrome is a rare cause of failure to thrive, and diagnosis is frequently delayed. Thus, it is important to consider the possibility of a CNS neoplasm as a cause of failure to thrive and to ensure early diagnosis.

*현주소 :서울대학교병원 운영 서울특별시립 보라매병원 접수 : 2003년 2월 20일, 승인 : 2003년 5월 12일 책임저자 :서정기, 서울대학교병원 소아과 Tel : 02)760-3627, 3750 Fax : 02)743-3455 E-mail : jkseo@plaza.snu.ac.kr 순으로 알려져 있다 1) . 피부 발진은 임상 경과 중 거의 100%에 서 나타나는 것으로 생각되며 25-50%에서는 다른 증상보다 늦 게 출현할 수 있어 진단에 어려움이 생길 수 있다 2) . 특히 위장 관 증상은 급성기의 중증도와 합병증 발생과 관련이 깊고 피부 병변에 선행하는 경우 급성 복증의 형태로 나타나게 되어 불필 요한 개복술을 시행하는 등 진단과 치료에 어려움을 겪게된다 3) . 따라서 피부 병변이 없이 복부 증상으로 선행하는 경우와 같이 임상적으로 진단하기 어려운 경우에 HSP를 진단할 수 있는 검 사 소견을 찾으려는 시도가 계속되어 왔으나 현재까지는 확실한 검사는 없는 실정이다 4

Fecal samples were serially collected within 72 h after birth and at 1, 2, and 4-6 weeks of age from preterm infants in the neonatal intensive care units (NICUs) of two different university hospitals. Total bacterial DNA was extracted from each fecal sample from 49 infants, and polymerase chain reaction (PCR) was performed with primers for the 16S gene of