Background: CycloZ, a combination of cyclo-His-Pro and zinc, has anti-diabetic activity. However, its exact mode of action remains to be elucidated. Methods: KK-Ay mice, a type 2 diabetes mellitus (T2DM) model, were administered CycloZ either as a preventive intervention, or as a therapy. Glycemic control was evaluated using the oral glucose tolerance test (OGTT), and glycosylated hemoglobin (HbA1c) levels. Liver and visceral adipose tissues (VATs) were used for histological evaluation, gene expression analysis, and protein expression analysis. Results: CycloZ administration improved glycemic control in KK-Ay mice in both prophylactic and therapeutic studies. Lysine acetylation of peroxisome proliferator-activated receptor gamma coactivator 1-alpha, liver kinase B1, and nuclear factor-κB p65 was decreased in the liver and VATs in CycloZ-treated mice. In addition, CycloZ treatment improved mitochondrial function, lipid oxidation, and inflammation in the liver and VATs of mice. CycloZ treatment also increased the level of β-nicotinamide adenine dinucleotide (NAD+), which affected the activity of deacetylases, such as sirtuin 1 (Sirt1). Conclusion Our findings suggest that the beneficial effects of CycloZ on diabetes and obesity occur through increased NAD+ synthesis, which modulates Sirt1 deacetylase activity in the liver and VATs. Given that the mode of action of an NAD+ booster or Sirt1 deacetylase activator is different from that of traditional T2DM drugs, CycloZ would be considered a novel therapeutic option for the treatment of T2DM.

Objective: Bipolar disorder displays a spectrum of manifestations, including manic, hypomanic, depressive, mixed, psychotic, and atypical episodes, contributing to its chronic nature and association with heightened suicide risk. Creating effective pharmacotherapy guidelines is crucial for managing bipolar disorder and reducing its prevalence. Treatment algorithms grounded in science have improved symptom management, but variations in recommended medications arise from research differences, healthcare policies, and cultural nuances globally. Methods: This study compares Korea’s bipolar disorder treatment algorithm with guidelines from the UK, Australia, and an international association. The aim is to uncover disparities in key recommended medications and their underlying factors. Differences in CYP450 genotypes affecting drug metabolism contribute to distinct recommended medications. Variances also stem from diverse guideline development approaches—expert consensus versus metaanalysis results—forming the primary differences between Korea and other countries. Results: Discrepancies remain in international guidelines relying on meta-analyses due to timing and utilized studies. Drug approval speeds further impact medication selection. However, limited high-quality research results are the main cause of guideline variations, hampering consistent treatment conclusions. Conclusion Korea’s unique Delphi-based treatment algorithm stands out. To improve evidence-based recommendations, large-scale studies assessing bipolar disorder treatments for the Korean population are necessary. This foundation will ensure future recommendations are rooted in scientific evidence.

Purpose: The purpose of this study was to investigate how pediatric intensive care unit (PICU) nurses and the mothers of hospitalized children perceived their partnership and identify the detailed differences in the common domains of partnership between them. Methods: A qualitative descriptive design with semi-structured and open-ended interviews was used. Interviews with mothers of hospitalized children and nurses in the PICU were conducted at a national university hospital in South Korea. Results: Five integrated categories were identified concerning nurses' and mothers' perceptions of partnership. Five common domains were derived by merging the partnership categories perceived by each PICU mother and nurse: expectation of trust, sharing and communication, participation in care, equality in the relationship, and coordination of opinion However, there were significant differences in the composition of the categories of these common domains. Conclusion These results may facilitate more effective partnerships between parents and PICU nurses. Efforts should be taken to promote the formation of trust between nurses and parents and create an environment that is conductive to regular open communication in particular, steps should be taken to reduce gaps in awareness concerning this partnership and information sharing, nursing methods, and decision-making.

This study aimed to identify maternal, infant, and perinatal mortality using the nationalpopulation data of South Korea between 2018 and 2020, and to analyze mortality rates according tocharacteristics such as age, date of death, and cause of death in each group. This study updates themost recent study using 2009 to 2017 data.Methods: Analyses of maternal, infant, and perinatal mortality were done with data identifiedthrough the supplementary investigation system for cases of death from the Census of PopulationDynamics data provided by Statistics Korea from 2018 to 2020.Results: Between 2018 and 2020, a total of 99 maternal deaths, 2,427 infant deaths, and 2,408 perinatal deaths were identified from 901,835 live births. The maternal mortality ratio was 11.3 deathsper 100,000 live births in 2018; it decreased to 9.9 in 2019 but increased again to 11.8 in 2020. Thematernal mortality ratio increased steeply in women over the age of 40 years. An increasing trend inthe maternal mortality ratio was found for complications related to the puerperium and hypertensive disorders. Both infant and perinatal mortality continued to decrease, from 2.8 deaths per 1,000live births in 2018 to 2.5 in 2020 and from 2.8 in 2018 to 2.5 in 2020, respectively.Conclusion: Overall, the maternal, infant, and perinatal mortality statistics showed improvements.However, more attention should be paid to women over 40 years of age and specific causes of maternal deaths, which should be taken into account in Korea’s maternal and child health policies.

Purpose: Korea has implemented an early screening for colorectal cancer since 2004. However, it is not known whether this has translated into improved survival over the years. Methods: We acquired colorectal cancer mortality data from the Cause of Death Statistics in Korea from 2000 to 2020. We characterized the data into year of death, cancer-specific loci, and age group. We analyzed age-standardized mortality rates (ASMR) according to year of death, age group, and primary location to find trends in colorectal cancer mortality over a 20-year period. Results: The crude mortality rate of colorectal cancer increased from 8.78 per 100,000 in 2000 to 17.27 per 100,000 in 2020. The second decade was slower in increments compared to the first decade. ASMR showed a decrease over the second decade after an initial increase in the first decade. The decrease was primarily from the lowering of ASMR for rectosigmoid cancers. Age group analysis showed a lowering of ASMR mainly in the 45–59-year, 60–74-year, and ≥ 75-year age groups; however, 0–29-year and 30–44-year age groups showed generally unchanged ASMR over the total period. Conclusion After a brief incline of age-specific mortality of colorectal cancers during the early 2000s, colorectal cancer mortality has gradually been decreasing in the past decade. This was mainly due to decreased mortalities in rectosigmoid colon cancers especially in the age groups that were the target of early screening.

OBJECTIVES: To compare the white matter microstructure of dyslexic children with normal children using diffusion tensor imaging. METHODS: Twenty one dyslexic children and 24 normal control children were recruited in the second and third grade of elementary school students. The fractional anisotropy (FA) values of 20 representative white matter tracts were estimated from the diffusion tensor imaging data of each subject using the Johns Hopkins University-white matter tractography atlas to determine the difference in white matter integrity between the dyslexic children and normal children. RESULTS: Compared to the normal control group, the FA values of the left inferior longitudinal fasciculus [F(1,39)=5.908, p<0.05] and temporal part of the right superior longitudinal fasciculus [F(1,39)=7.328, p=0.010] were significantly higher in the dyslexic group and there was no significant difference in the other tracts. CONCLUSION: In dyslexic children, compensatory pathways develop in the left inferior longitudinal fasciculus and in the temporal part of the right superior longitudinal fasciculus.
Anisotropy ; Case-Control Studies ; Child ; Diffusion Tensor Imaging ; Dyslexia ; Humans ; White Matter