Impact of pediatric COVID-19 isolation on children's well-being and caregiver mental health.

Background: The Korean government implemented mandatory hospital isolation in the early phase of the COVID-19 pandemic. This study investigated the mental health of children and caregivers who underwent mandatory hospital isolation due to COVID-19.

Methods: This prospective study examined the physical condition and mental health of children under 7 years of age with COVID-19 and the mental health of their caregivers who underwent isolation in negative pressure rooms at two hospitals in Korea from April to September 2021.

PM exposure during pregnancy affects childhood asthma via placental epigenetic changes: Neuronal differentiation and proliferation and Notch signaling pathways.

Particulate matter (PM) exposure during pregnancy increases the risk of developing asthma in children. However, the placental mechanisms have yet to be elucidated. This study aims to evaluate the mechanisms associated with PM exposure during pregnancy and asthma susceptibility via placental epigenetic dysregulation.

Factors influencing the quality of life in children with atopic dermatitis in Korea: A multicenter cross-sectional study.

There is a lack of studies about which factors affect the quality of life (QoL) in children with atopic dermatitis (AD), although it is well known that AD has considerably negative effects on their QoL. This study aimed to measure the QoL in children with AD and identify the factors that affect their QoL. A questionnaire derived from the Children's Dermatology Life Quality Index (CDLQI) was used to measure QoL.

KAAACI Allergic Rhinitis Guidelines: Part 2. Update in Non-pharmacological Management.

Allergic rhinitis is the most common chronic disease worldwide. Various upper airway symptoms lower quality of life, and due to the recurrent symptoms, multiple treatments are usually attempted rather than one definitive treatment. There are alternatives to medical (medication-based) and non-medical treatments.

KAAACI Allergic Rhinitis Guidelines: Part 1. Update in Pharmacotherapy.

The prevalence of allergic rhinitis (AR) and the socioeconomic burden associated with the medical cost and quality of life (QOL) of AR have progressively increased. Therefore, practical guidelines for the appropriate management of AR need to be developed based on scientific evidence while considering the real-world environment, values, and preferences of patients and physicians. The Korean Academy of Asthma, Allergy and Clinical Immunology revised clinical guidelines of AR to address key clinical questions of the management of AR.

Long-term Outcomes of Turbinate Surgery in Patients With Allergic Rhinitis: A Systematic Review and Meta-analysis.

Importance: Turbinate surgery is an effective treatment for allergic rhinitis (AR) refractory to medical treatment. However, the long-term outcomes of turbinate surgery are still unclear and have not yet been confirmed by a meta-analysis and systematic review of the literature.

Objective: To investigate the long-term outcomes and safety of turbinate surgery in AR by performing a meta-analysis.

Classification of atopic dermatitis phenotypes according to allergic sensitization by cluster analysis.

A cluster study to classify atopic dermatitis (AD) phenotypes into subgroups is required to better understand and manage the disease owing to the heterogeneity of its clinical features. This study aimed to identify the phenotypic subgroups of childhood AD according to allergic sensitization. In 258 children with AD, hierarchical cluster analysis based on specific immunoglobulin (Ig) E sensitization revealed four distinct clusters.

A partially hydrolyzed whey formula provides adequate nutrition in high-risk infants for allergy.

Background/objectives: Hydrolyzed formula is often fed to infants with gastrointestinal or immune issues, such as malabsorption or cow's milk allergy, because enzymatic treatment has rendered it more digestible and less allergenic than standard cow's milk formula (SF). Partially hydrolyzed formula (PHF) should be considered for those infants who are intolerant to extensively hydrolyzed formula. However, there are concerns about the nutritional insufficiencies of PHF.

Outcomes of intracorporeal versus extracorporeal anastomosis in laparoscopic colectomy surgery.

Purpose: The aim of this study is to evaluate the feasibility and safety of intracorporeal anastomosis in laparoscopic colectomy for benign and malignant tumor diseases in actual clinical settings.

Methods: From January 2016 to June 2021, a total of 114 cases were selected for laparoscopic colectomy for benign or malignant tumor diseases. Seventeen cases that underwent simultaneous combined laparoscopic procedures were excluded from the study.

Particulate matter exposure during pregnancy increases risk of childhood asthma: modified by gender and NRF2 genotype.

Background: Exposure to particulate matter (PM) has been known to develop asthma in children and the oxidative stress-related mechanisms are suggested. For the development of asthma, not only the exposure dose but also the critical window and the risk modifying factors should be evaluated.

Objective: We investigated whether prenatal exposure to PM10 increases the risk of childhood asthma and evaluated the modifying factors, such as gender and reactive oxidative stress-related gene.

Prenatal PM affects atopic dermatitis depending on maternal anxiety and gender: COCOA study.

Background: The prevalence of atopic dermatitis (AD) is increasing worldwide. Prenatal particulate matter with an aerodynamic diameter <2.5 μm (PM) and maternal anxiety during pregnancy has been suggested as a potential causes of AD.

Mid-pregnancy PM exposure affects sex-specific growth trajectories via ARRDC3 methylation.

Prenatal particulate matter <2.5 μm (PM) is associated with adverse birth growth. However, the longitudinal growth impacts have been little studied, and no mechanistic relationships have been described.

Exposure to Polyhexamethylene Guanidine Exacerbates Bronchial Hyperresponsiveness and Lung Inflammation in a Mouse Model of Ovalbumin-Induced Asthma.

Humidifier disinfectants (HDs) exposure has now been associated with acute lung injury and pulmonary fibrosis; polyhexamethylene guanidine (PHMG) has been confirmed to cause severe lung inflammation and fibrosis in mice. Recent evidence also indicates that HDs exposure increases the asthma risk in children, but the underlying mechanisms remain unclear. We aimed to investigate the effects of PHMG exposure on asthma in mice and the potential underlying mechanisms.

Interactions Between Variants and in the Gut Contribute to the Development of Atopic Dermatitis in Infancy.

Purpose: Interleukin (IL)-17 variants and perturbations in the gut microbiota may influence the development of atopic dermatitis (AD). However, unifying principles for variants of host and microbe interaction remains unclear. We sought to investigate whether variants and gut microbiota affect the development of AD in infancy.

Different Characteristics of Childhood Asthma Related to Polyhexamethylene Guanidine Exposure.

Exposure to humidifier disinfectants (HDs) can increase the risk of asthma, but the characteristics of HD-related asthma are currently unclear. Polyhexamethylene guanidine (PHMG)-containing HD was the most commonly used and the most frequently associated with HD-associated lung injury. To investigate the characteristics of PHMG-induced asthma.

Prenatal PM exposure and vitamin D-associated early persistent atopic dermatitis via placental methylation.

Background: The effects of prenatal particulate matter with an aerodynamic diameter ranging from 0.1 μm to 2.5 μm (PM) and vitamin D on atopic dermatitis (AD) phenotypes have not been evaluated.

A multicenter anaphylaxis registry in Korea: Clinical characteristics and acute treatment details from infants to older adults.

Background: Although the prevalence of anaphylaxis is increasing worldwide, the large-scale studies in Asia evaluating anaphylaxis in all age groups are limited. We aimed to collect more precise and standardized data on anaphylaxis in Korea using the first multicenter web-based registry.

Methods: Twenty-two departments from 16 hospitals participated from November 2016 to December 2018.

Vegetable dietary pattern may protect mild and persistent allergic rhinitis phenotype depending on genetic risk in school children.

Background: The effect of diet on allergic rhinitis (AR), its severity in children, and whether it modifies AR depending on genetic susceptibility are unknown. We investigated the association between dietary patterns and AR in school children and the influence of diet on AR according to a genetic risk score (GRS).

Methods: Totally, 435 7-year-old school children were recruited from the Panel Study on Korean Children.

Imbalance of Gut , , and Determines the Natural Course of Atopic Dermatitis in Infant.

Purpose: The roles of gut microbiota on the natural course of atopic dermatitis (AD) are not yet fully understood. We investigated whether the composition and function of gut microbiota and short-chain fatty acids (SCFAs) at 6 months of age could affect the natural course of AD up to 24 months in early childhood.

Methods: Fecal samples from 132 infants were analyzed using pyrosequencing, including 84 healthy controls, 22 transient AD and 26 persistent AD subjects from the Cohort for Childhood Origin of Asthma and Allergic Diseases (COCOA) birth cohort.

Early-life exposure to humidifier disinfectant determines the prognosis of lung function in children.

Background: Use of humidifier disinfectants (HD) at home leads to chemical airborne exposure, causing HD associated lung injury (HDLI) with high mortality. However, the lung function in children diagnosed with HDLI is not well studied. We investigated the effect of HD exposure on lung function, prognosis, and exposure characteristics associated with the lung function phenotype in children.

Particulate matter at third trimester and respiratory infection in infants, modified by GSTM1.

Objectives: To investigate the association between particulate matter with an aerodynamic diameter of less than 2.5 μm (PM ) exposure during each trimester of pregnancy and development of lower respiratory tract infections (LRTIs) during the first 3 years of life and whether GSTM1 gene polymorphisms modify these effects.

Methods: This study included 1,180 mother-child pairs from the Cohort for Childhood Origin of Asthma and allergic diseases.

Risk Factors and Comorbidities Associated With the Allergic Rhinitis Phenotype in Children According to the ARIA Classification.

Purpose: Data are lacking on the association between the allergic rhinitis (AR) phenotype and sensitization to specific allergens or bronchial hyperresponsiveness (BHR) in children. We here investigated risk factors and comorbidities, including sensitization to specific allergens and BHR, for the AR phenotype by AR and its Impact on Asthma (ARIA) classification in a general population-based birth cohort study.

Methods: We enrolled 606 children aged 7 years from the Panel Study of Korean Children.