Yong Joo Kim

The immune system is not fully developed in human neonates and infants; breastfeeding is important in this stage as the bioactive components of human breast milk are known to have anti-microbial, anti-inflammatory, and immunomodulatory effects, and can therefore contribute to an infant's immunity against allergies, asthma, autoimmune diseases, and inflammatory bowel disease. Herein, the positive effect on the immune system by human colostrum and milk are reviewed.

The rate of human milk feeding has been decreasing despite the diverse efforts of many physicians and nurses, as well as numerous professional organizations and various international health institutions. The number of physicians and nurses who can provide proper guidance for human milk feeding and offer appropriate knowledge and techniques to allow the most beneficial and convenient manner of breastfeeding is quite deficient. It is suggested that physicians and nurses be trained to teach and edu

The antibody to hepatitis B surface antigen (anti-HBs) seropositivity rate after 3 doses of hepatitis B virus (HBV) vaccination during infancy period is known to be higher than 90%. However, a considerable number of vaccines do not form protective anti-HBs or chronologic decrease of anti-HBs. We retrospectively collected data of HBV serologic test results in 20,738 individuals from 2000 to 2015. After exclusion criteria were applied, 19,072 individuals were included. We analyzed the anti-HBs ser

See the article "Components of human breast milk: from macronutrient to microbiome and microRNA" via https://doi.org/10.3345/cep.2020.00059.

Gastrointestinal and colonic endoscopic examinations have been performed in pediatric patients in Korea for 3 decades. Endoscopic procedures are complex and may be unsafe if special concerns are not considered. Many things have to be kept in mind before, during, and after the procedure. Gastrointestinal endoscopy is one of the most frequently performed procedure in children nowadays, Since the dimension size of the endoscopy was modified for pediatric patients 15 years ago, endoscopic procedures

The antibody to hepatitis B surface antigen (anti-HBs) seropositivity rate after 3 doses of hepatitis B virus (HBV) vaccination during infancy period is known to be higher than 90%. However, a considerable number of vaccines do not form protective anti-HBs or chronologic decrease of anti-HBs. We retrospectively collected data of HBV serologic test results in 20,738 individuals from 2000 to 2015. After exclusion criteria were applied, 19,072 individuals were included. We analyzed the anti-HBs ser

PURPOSE: Pediatric chest pain is considered to be idiopathic or caused by benign diseases. This study was to find out how much upper gastrointestinal (UGI) diseases are major causes of chest pain in pediatric patients. METHODS: The records of 75 children (42 boys and 33 girls, aged 3-17 years old) who have presented with mainly chest pain from January 1995 to March 2015 were retrospectively reviewed. Chest X-ray and electrocardiography (ECG) were performed in all aptients. Further cardiologic an

See the article "Vitamin D deficiency in infants aged 1 to 6 months" via https://doi.org/10.3345/kjp.2013.56.5.205.

The pathophysiology and fundamental etiologic mechanism of inflammatory bowel disease (IBD) is not well understood even though therapeutic regimens and drugs are rapidly evolutionary. IBD has complicated connections with genetic, immunologic, gut microbial, environmental, and nutritional factors. It is not clearly well known to the physicians how to feed, what nutrients are more helpful, and what food to be avoided. This review discusses the issues of growth and important nutritional concerns in

Background: Kawasaki disease (KD) is the most common acquired heart disease among children in developed countries, but the etiology is still unclear. There are several hypotheses regarding the outbreak of KD, including infection, genetics, and immunity. Since breastfeeding plays an essential role in the immune system's composition, investigating breastfeeding's effects on the occurrence of KD would be an excellent way to identify the etiology of KD. Aim: To determine whether the incidence of KD

Importance: The incidence of central precocious puberty (CPP) is increasing globally, raising concern about its potential long-term health consequences. However, the association between early-life feeding practices and CPP is poorly understood. Objective: To investigate the association of breastfeeding during the first 4 to 6 months of life with CPP in boys and girls and whether this association is mediated by prepubertal adiposity. Design, Setting, and Participants: This nationwide, retrospecti

Backgrounds: Various methods have been devised for choosing the correct internal diameter (ID) of endotracheal tubes and the proper lengths for oral endotracheal tubes at different ages in children. This study was performed to evaluate the appropriate sizes of uncuffed endotracheal tubes and distance from upper incisor to carina in Korean children under 8 years old. Methods: Five hundred thirty five children under 8 years in ASA class 1 and 2 were evaluated for the study by age groups: 0∼3 month